/* === Theme Variables === */
:root, [data-theme="light"] {
  --accent: #6366f1;
  --accent-dark: #4f46e5;
  --accent-light: #c7d2fe;
  --accent-bg: #eef2ff;
  --accent-shadow: rgba(99,102,241,.35);
  --accent-ring: rgba(99,102,241,.1);
  --text: #1e293b;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-faint: #475569;
  --bg-page: #f0f2f5;
  --bg-card: #ffffff;
  --bg-card-rgb: 255,255,255;
  --bg-input: #f8fafc;
  --bg-panel-header: linear-gradient(to bottom, #fafbff, #fff);
  --bg-hover: #f1f5f9;
  --bg-active-toggle: #ffffff;
  --border: #e2e8f0;
  --border-light: #e8ecf1;
  --border-section: #f1f4f8;
  --border-divider: #eef1f5;
  --border-hover: #cbd5e1;
  --shadow-card: 0 4px 24px rgba(0,0,0,.06), 0 1px 4px rgba(0,0,0,.04);
  --shadow-sm: 0 1px 4px rgba(0,0,0,.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,.06), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.12);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.1);
  --radius-card: 20px;
  --radius-input: 8px;
  --radius-popover: 14px;
  --popover-width: 300px;
  --popover-toolbar-top: 56px;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-hover: #dc2626;
  --success: #16a34a;
  --svg-bg: transparent;
  /* Timing */
  --dur-fast: .12s;
  --dur-normal: .2s;
  --dur-slow: .3s;
  /* Z-index scale */
  --z-base: 1;
  --z-minimap: 14;
  --z-toolbar: 15;
  --z-popover: 25;
  --z-popover-menu: 30;
  --z-modal: 50;
  --z-toast: 60;
  --z-color-picker: 70;
  --z-mobile-overlay: 199;
  --z-mobile-panel: 200;
  --z-loader: 9999;
}

/* --- Dark --- */
[data-theme="dark"] {
  color-scheme: dark;
  --accent: #818cf8;
  --accent-dark: #6366f1;
  --accent-light: #4338ca;
  --accent-bg: rgba(99,102,241,.15);
  --accent-shadow: rgba(99,102,241,.25);
  --accent-ring: rgba(99,102,241,.2);
  --text: #e2e8f0;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-faint: #cbd5e1;
  --bg-page: #0f172a;
  --bg-card: #1e293b;
  --bg-card-rgb: 30,41,59;
  --bg-input: #162032;
  --bg-panel-header: linear-gradient(to bottom, #1e293b, #1e293b);
  --bg-hover: #273449;
  --bg-active-toggle: #334155;
  --border: #334155;
  --border-light: #2d3a4e;
  --border-section: #273449;
  --border-divider: #273449;
  --border-hover: #475569;
  --shadow-card: 0 4px 24px rgba(0,0,0,.3), 0 1px 4px rgba(0,0,0,.2);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.4);
  --danger: #f87171;
  --danger-bg: rgba(239,68,68,.12);
  --danger-border: rgba(239,68,68,.25);
  --svg-bg: transparent;
}

/* --- Midnight --- */
[data-theme="midnight"] {
  color-scheme: dark;
  --accent: #38bdf8;
  --accent-dark: #0ea5e9;
  --accent-light: #0c4a6e;
  --accent-bg: rgba(56,189,248,.1);
  --accent-shadow: rgba(56,189,248,.25);
  --accent-ring: rgba(56,189,248,.15);
  --text: #e0f2fe;
  --text-primary: #f0f9ff;
  --text-secondary: #7dd3fc;
  --text-muted: #38bdf8;
  --text-faint: #bae6fd;
  --bg-page: #020617;
  --bg-card: #0c1222;
  --bg-card-rgb: 12,18,34;
  --bg-input: #0a0f1e;
  --bg-panel-header: linear-gradient(to bottom, #0f1729, #0c1222);
  --bg-hover: #131d33;
  --bg-active-toggle: #1e293b;
  --border: #1e293b;
  --border-light: #172033;
  --border-section: #131d33;
  --border-divider: #131d33;
  --border-hover: #334155;
  --shadow-card: 0 4px 24px rgba(0,0,0,.5), 0 1px 4px rgba(0,0,0,.3);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.6);
  --danger: #fb7185;
  --danger-bg: rgba(244,63,94,.12);
  --danger-border: rgba(244,63,94,.2);
  --svg-bg: transparent;
}

/* --- Solarized --- */
[data-theme="solarized"] {
  --accent: #268bd2;
  --accent-dark: #1a6da8;
  --accent-light: #b8d4e8;
  --accent-bg: rgba(38,139,210,.08);
  --accent-shadow: rgba(38,139,210,.3);
  --accent-ring: rgba(38,139,210,.12);
  --text: #073642;
  --text-primary: #002b36;
  --text-secondary: #586e75;
  --text-muted: #93a1a1;
  --text-faint: #657b83;
  --bg-page: #eee8d5;
  --bg-card: #fdf6e3;
  --bg-card-rgb: 253,246,227;
  --bg-input: #f5eed6;
  --bg-panel-header: linear-gradient(to bottom, #fdf6e3, #fdf6e3);
  --bg-hover: #f0e8cc;
  --bg-active-toggle: #fdf6e3;
  --border: #d6ceb5;
  --border-light: #e0d8bf;
  --border-section: #ebe4ce;
  --border-divider: #ebe4ce;
  --border-hover: #c4bca3;
  --shadow-card: 0 4px 24px rgba(0,0,0,.06), 0 1px 4px rgba(0,0,0,.03);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.08);
  --danger: #dc322f;
  --danger-bg: rgba(220,50,47,.08);
  --danger-border: rgba(220,50,47,.2);
  --svg-bg: transparent;
}

/* --- Nature --- */
[data-theme="nature"] {
  --accent: #16a34a;
  --accent-dark: #15803d;
  --accent-light: #bbf7d0;
  --accent-bg: rgba(22,163,74,.08);
  --accent-shadow: rgba(22,163,74,.3);
  --accent-ring: rgba(22,163,74,.12);
  --text: #1a2e1a;
  --text-primary: #14532d;
  --text-secondary: #4d7c5a;
  --text-muted: #86a892;
  --text-faint: #3d6b4a;
  --bg-page: #ecf5ec;
  --bg-card: #f8fcf8;
  --bg-card-rgb: 248,252,248;
  --bg-input: #f0f7f0;
  --bg-panel-header: linear-gradient(to bottom, #f5faf5, #f8fcf8);
  --bg-hover: #e6f2e6;
  --bg-active-toggle: #f8fcf8;
  --border: #d1e5d1;
  --border-light: #dceadc;
  --border-section: #e8f2e8;
  --border-divider: #e8f2e8;
  --border-hover: #a8cca8;
  --shadow-card: 0 4px 24px rgba(0,40,0,.06), 0 1px 4px rgba(0,40,0,.03);
  --shadow-popover: 0 8px 24px rgba(0,40,0,.08);
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --svg-bg: transparent;
}

/* --- Rose --- */
[data-theme="rose"] {
  --accent: #e11d48;
  --accent-dark: #be123c;
  --accent-light: #fecdd3;
  --accent-bg: rgba(225,29,72,.06);
  --accent-shadow: rgba(225,29,72,.3);
  --accent-ring: rgba(225,29,72,.1);
  --text: #1c1017;
  --text-primary: #1c1017;
  --text-secondary: #78616b;
  --text-muted: #a8929c;
  --text-faint: #5c4a52;
  --bg-page: #f8f0f3;
  --bg-card: #fffbfc;
  --bg-card-rgb: 255,251,252;
  --bg-input: #f9f3f5;
  --bg-panel-header: linear-gradient(to bottom, #fef8fa, #fffbfc);
  --bg-hover: #f5eaee;
  --bg-active-toggle: #fffbfc;
  --border: #e8d5db;
  --border-light: #f0dfe4;
  --border-section: #f5eaee;
  --border-divider: #f5eaee;
  --border-hover: #d4b8c1;
  --shadow-card: 0 4px 24px rgba(40,0,20,.06), 0 1px 4px rgba(40,0,20,.03);
  --shadow-popover: 0 8px 24px rgba(40,0,20,.08);
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --svg-bg: transparent;
}

/* --- Lavender --- */
[data-theme="lavender"] {
  --accent: #7c3aed;
  --accent-dark: #6d28d9;
  --accent-light: #ddd6fe;
  --accent-bg: rgba(124,58,237,.07);
  --accent-shadow: rgba(124,58,237,.3);
  --accent-ring: rgba(124,58,237,.12);
  --text: #2e1065;
  --text-primary: #2e1065;
  --text-secondary: #6b5b8a;
  --text-muted: #a393bf;
  --text-faint: #4c3575;
  --bg-page: #f0ecf9;
  --bg-card: #faf8ff;
  --bg-card-rgb: 250,248,255;
  --bg-input: #f3eff9;
  --bg-panel-header: linear-gradient(to bottom, #f5f2fc, #faf8ff);
  --bg-hover: #ece6f5;
  --bg-active-toggle: #faf8ff;
  --border: #ddd4ee;
  --border-light: #e6dff2;
  --border-section: #ede8f5;
  --border-divider: #ede8f5;
  --border-hover: #c4b5db;
  --shadow-card: 0 4px 24px rgba(46,16,101,.06), 0 1px 4px rgba(46,16,101,.03);
  --shadow-popover: 0 8px 24px rgba(46,16,101,.1);
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --svg-bg: transparent;
}

/* --- Dracula --- */
[data-theme="dracula"] {
  color-scheme: dark;
  --accent: #bd93f9;
  --accent-dark: #9d6fef;
  --accent-light: #6272a4;
  --accent-bg: rgba(189,147,249,.12);
  --accent-shadow: rgba(189,147,249,.25);
  --accent-ring: rgba(189,147,249,.18);
  --text: #f8f8f2;
  --text-primary: #f8f8f2;
  --text-secondary: #bfbfbf;
  --text-muted: #6272a4;
  --text-faint: #ccc;
  --bg-page: #1e1f29;
  --bg-card: #282a36;
  --bg-card-rgb: 40,42,54;
  --bg-input: #21222c;
  --bg-panel-header: linear-gradient(to bottom, #282a36, #282a36);
  --bg-hover: #343746;
  --bg-active-toggle: #44475a;
  --border: #44475a;
  --border-light: #3b3d50;
  --border-section: #343746;
  --border-divider: #343746;
  --border-hover: #6272a4;
  --shadow-card: 0 4px 24px rgba(0,0,0,.4), 0 1px 4px rgba(0,0,0,.25);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.5);
  --danger: #ff5555;
  --danger-bg: rgba(255,85,85,.12);
  --danger-border: rgba(255,85,85,.25);
  --svg-bg: transparent;
}

/* --- Nord --- */
[data-theme="nord"] {
  color-scheme: dark;
  --accent: #88c0d0;
  --accent-dark: #5e81ac;
  --accent-light: #4c566a;
  --accent-bg: rgba(136,192,208,.1);
  --accent-shadow: rgba(136,192,208,.25);
  --accent-ring: rgba(136,192,208,.15);
  --text: #eceff4;
  --text-primary: #eceff4;
  --text-secondary: #d8dee9;
  --text-muted: #7b88a1;
  --text-faint: #e5e9f0;
  --bg-page: #242933;
  --bg-card: #2e3440;
  --bg-card-rgb: 46,52,64;
  --bg-input: #272c36;
  --bg-panel-header: linear-gradient(to bottom, #2e3440, #2e3440);
  --bg-hover: #3b4252;
  --bg-active-toggle: #434c5e;
  --border: #3b4252;
  --border-light: #353c4a;
  --border-section: #3b4252;
  --border-divider: #3b4252;
  --border-hover: #4c566a;
  --shadow-card: 0 4px 24px rgba(0,0,0,.35), 0 1px 4px rgba(0,0,0,.2);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.45);
  --danger: #bf616a;
  --danger-bg: rgba(191,97,106,.12);
  --danger-border: rgba(191,97,106,.25);
  --svg-bg: transparent;
}

/* --- Catppuccin Mocha --- */
[data-theme="catppuccin"] {
  color-scheme: dark;
  --accent: #cba6f7;
  --accent-dark: #b4befe;
  --accent-light: #585b70;
  --accent-bg: rgba(203,166,247,.1);
  --accent-shadow: rgba(203,166,247,.25);
  --accent-ring: rgba(203,166,247,.15);
  --text: #cdd6f4;
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #6c7086;
  --text-faint: #bac2de;
  --bg-page: #11111b;
  --bg-card: #1e1e2e;
  --bg-card-rgb: 30,30,46;
  --bg-input: #181825;
  --bg-panel-header: linear-gradient(to bottom, #1e1e2e, #1e1e2e);
  --bg-hover: #2a2b3d;
  --bg-active-toggle: #313244;
  --border: #313244;
  --border-light: #2a2b3d;
  --border-section: #2a2b3d;
  --border-divider: #2a2b3d;
  --border-hover: #45475a;
  --shadow-card: 0 4px 24px rgba(0,0,0,.45), 0 1px 4px rgba(0,0,0,.3);
  --shadow-popover: 0 8px 24px rgba(0,0,0,.55);
  --danger: #f38ba8;
  --danger-bg: rgba(243,139,168,.1);
  --danger-border: rgba(243,139,168,.2);
  --svg-bg: transparent;
}

/* === Reset & Base === */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg-page); color: var(--text-primary); display: flex; height: 100vh; overflow: hidden; padding: 10px; gap: 10px; }
main { display: contents; }

/* === Empty state === */
.empty-state-overlay {
  display: none; position: absolute; inset: 0; z-index: 5;
  flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  color: var(--text-muted); font-size: 14px;
}
#map-container.empty-state .empty-state-overlay { display: flex; }
#map-container.empty-state #plasmid-svg,
#map-container.empty-state #linear-svg { opacity: 0; pointer-events: none; }
#map-container.empty-state .toolbar-divider,
#map-container.empty-state .toolbar-bp { opacity: 0; pointer-events: none; }
#panel.empty-state .panel-top,
#panel.empty-state .panel-bottom { opacity: .3; pointer-events: none; }
.empty-state-btn {
  padding: 8px 20px; font-size: 13px; font-weight: 600;
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  cursor: pointer; transition: background .15s;
}
.empty-state-btn:hover { background: var(--accent-hover, #4f46e5); }
.empty-state-hint { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

/* === App loader === */
#app-loader {
  position: fixed; inset: 0; z-index: var(--z-loader); display: flex; gap: 10px; padding: 10px;
  background: var(--bg-page); transition: opacity var(--dur-slow) ease;
}
#app-loader.hidden { opacity: 0; pointer-events: none; }
.loader-panel {
  width: 400px; min-width: 400px; border-radius: 20px;
  background: linear-gradient(110deg, var(--bg-card) 30%, var(--bg-hover) 50%, var(--bg-card) 70%);
  background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite;
}
.loader-map {
  flex: 1; border-radius: 20px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(110deg, var(--bg-card) 30%, var(--bg-hover) 50%, var(--bg-card) 70%);
  background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite;
}
.loader-ring {
  width: 200px; height: 200px; border-radius: 50%;
  border: 16px solid var(--border-light); opacity: .4;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* === Sidebar Panel === */
#panel { width: 400px; min-width: 400px; background: var(--bg-card); border: none; display: flex; flex-direction: column; overflow: hidden; border-radius: 20px; box-shadow: var(--shadow-md); }
#panel h2 { padding: 18px 20px; font-size: 13px; border-bottom: 1px solid var(--border-divider); color: var(--accent); letter-spacing: .8px; text-transform: uppercase; flex-shrink: 0; font-weight: 700; background: var(--bg-panel-header); border-radius: var(--radius-card) var(--radius-card) 0 0; display: flex; align-items: center; gap: 0; }
.panel-home { color: var(--accent); text-decoration: none; display: flex; align-items: center; padding: 0 8px 0 0; opacity: .6; transition: opacity var(--dur-fast); line-height: 1; }
.panel-home:hover { opacity: 1; }
.panel-home svg { display: block; }

.panel-top { flex: 0 1 auto; overflow-y: auto; border-bottom: 1px solid var(--border-divider); min-height: 0; }
.panel-top, .panel-bottom { scrollbar-width: thin; scrollbar-color: var(--border-hover) transparent; }
.panel-top::-webkit-scrollbar, .panel-bottom::-webkit-scrollbar { width: 5px; }
.panel-top::-webkit-scrollbar-thumb, .panel-bottom::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 10px; }
.panel-top::-webkit-scrollbar-track, .panel-bottom::-webkit-scrollbar-track { background: transparent; }
.panel-bottom { flex: 1 1 0; overflow: hidden; min-height: 0; display: flex; flex-direction: column; }
.panel-footer {
  flex-shrink: 0; display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; border-top: 1px solid var(--border-divider);
  font-size: 10px; color: var(--text-muted); letter-spacing: .2px;
  position: relative;
}
.panel-footer button {
  background: none; border: none; color: var(--accent); font-size: 10px;
  font-weight: 600; cursor: pointer; padding: 0; letter-spacing: .2px;
}
.panel-footer button:hover { text-decoration: underline; }

.section { padding: 16px 20px; border-bottom: 1px solid var(--border-section); }
.section:last-child { border-bottom: none; }
.section h3 { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 12px; font-weight: 700; }

/* Collapsible sections */
.section h3.collapsible { cursor: pointer; user-select: none; display: flex; align-items: center; justify-content: space-between; margin-bottom: 0; padding: 4px 0; transition: margin-bottom .15s; }
.section h3.collapsible:not(.collapsed) { margin-bottom: 12px; }
.section h3.collapsible::after { content: ''; width: 6px; height: 6px; border-right: 1.5px solid var(--text-muted); border-bottom: 1.5px solid var(--text-muted); transform: rotate(45deg); transition: transform var(--dur-normal); flex-shrink: 0; }
.section h3.collapsible.collapsed::after { transform: rotate(-45deg); }
.section-body { overflow: hidden; max-height: 800px; opacity: 1; transition: max-height .25s ease, opacity .2s ease, margin .15s ease; }
.no-transitions .section-body { transition: none; }
.section-body.collapsed { max-height: 0; opacity: 0; margin: 0; pointer-events: none; }
.section.gc-disabled { position: relative; }
.section.gc-disabled .section-body { opacity: .35; pointer-events: none; }
.section.gc-disabled h3.collapsible { opacity: .5; pointer-events: none; }
.section.gc-disabled .gc-disabled-hint {
  display: block; font-size: 10px; color: var(--text-muted);
  margin-top: 4px; font-weight: 400; letter-spacing: 0; text-transform: none;
}

/* Panel tabs */
.panel-tabs { display: flex; border-bottom: 2px solid var(--border-divider); flex-shrink: 0; background: var(--bg-input); }
.panel-tabs button { flex: 1; padding: 10px 0; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: var(--text-muted); background: none; position: relative; transition: color var(--dur-fast); }
.panel-tabs button.active { color: var(--accent); }
.panel-tabs button.active::after { content: ''; position: absolute; bottom: -2px; left: 20%; right: 20%; height: 2px; background: var(--accent); border-radius: 1px; }
.panel-tabs button:hover:not(.active) { color: var(--text-secondary); }
.tab-pane { display: none; overflow-y: auto; flex: 1; }
.tab-pane.active { display: block; animation: tabFadeIn var(--dur-normal) ease; }
@keyframes tabFadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.tab-pane { scrollbar-width: thin; scrollbar-color: var(--border-hover) transparent; }
.tab-pane::-webkit-scrollbar { width: 5px; }
.tab-pane::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 10px; }
.tab-pane::-webkit-scrollbar-track { background: transparent; }

/* === Form Elements === */
label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 5px; font-weight: 600; letter-spacing: .2px; }
input, textarea, select {
  width: 100%; padding: 8px 11px; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-primary); font-size: 13px; margin-bottom: 10px; outline: none;
  transition: border-color var(--dur-fast), box-shadow .15s, background .15s;
}
input:hover, textarea:hover, select:hover { border-color: var(--border-hover); background: var(--bg-card); }
input:focus-visible, textarea:focus-visible, select:focus-visible { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); background: var(--bg-card); }
textarea { resize: vertical; font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; font-size: 11px; line-height: 1.5; }
select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; }

/* === Custom font picker === */
.font-picker {
  position: relative; width: 100%; margin-bottom: 10px;
}
.font-picker-trigger {
  width: 100%; padding: 8px 28px 8px 11px; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-primary); font-size: 13px; font-weight: 400; cursor: pointer;
  text-align: left; outline: none; transition: border-color var(--dur-fast), box-shadow .15s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
}
.font-picker-trigger:hover { border-color: var(--border-hover); background-color: var(--bg-card); }
.font-picker-trigger:focus-visible, .font-picker.open .font-picker-trigger {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring);
}
.font-picker-dropdown {
  display: none; position: fixed;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: 10px; box-shadow: var(--shadow-lg);
  z-index: var(--z-color-picker); max-height: 200px; overflow-y: auto; padding: 4px;
}
.font-picker-dropdown.open { display: block; }
.font-picker-option {
  padding: 7px 10px; border-radius: 6px; cursor: pointer; font-size: 14px;
  color: var(--text-primary); transition: background var(--dur-fast); white-space: nowrap;
}
.font-picker-option:hover { background: var(--bg-hover); }
.font-picker-option.selected { background: var(--accent-bg); color: var(--accent); font-weight: 600; }

/* === Buttons === */
button { padding: 8px 16px; border: none; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600; transition: all var(--dur-fast); font-family: inherit; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; width: 100%; box-shadow: 0 2px 8px rgba(99,102,241,.25); }
.btn-primary:hover { background: linear-gradient(135deg, var(--accent-dark), var(--accent-dark)); box-shadow: 0 4px 12px var(--accent-shadow); transform: translateY(-0.5px); }
.btn-secondary { background: var(--bg-hover); color: var(--text-faint); width: 100%; border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger-bg); color: var(--danger); padding: 4px 10px; font-size: 11px; border: 1px solid var(--danger-border); }
.item-list .btn-danger { padding: 2px 4px; font-size: 9px; border-radius: 4px; line-height: 1; }
.btn-danger:hover { background: var(--danger-border); border-color: var(--danger); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.list-actions { display: flex; gap: 6px; padding: 4px 0; }
.list-actions .btn-sm { flex: 1; }

/* === Input Mode Tabs === */
.input-tabs { display: flex; margin-bottom: 12px; background: var(--bg-hover); border-radius: 8px; padding: 3px; }
.input-tabs button { flex: 1; background: transparent; color: var(--text-secondary); padding: 7px; font-size: 12px; border-radius: 6px; }
.input-tabs button.active { background: var(--bg-active-toggle); color: var(--accent); box-shadow: var(--shadow-sm); }
.input-tabs button:not(.active):hover { color: var(--text-faint); }
.input-mode { display: none; }
.input-mode.active { display: block; }

/* === Feature List === */
/* Shared item list styles */
.feature-search {
  position: relative;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-section);
}
.feature-search-icon {
  position: absolute; left: 28px;
  top: 10px; height: 30px; display: flex; align-items: center;
  color: var(--text-muted); pointer-events: none;
}
.feature-search input {
  width: 100%; height: 30px; padding: 0 30px; font-size: 12px; margin-bottom: 0;
  border: 1px solid var(--border-light); border-radius: 6px;
  background: var(--bg-hover); color: var(--text-primary);
  outline: none; transition: border-color var(--dur-fast), background .15s, box-shadow .15s;
}
.feature-search input:focus-visible {
  border-color: var(--accent); background: var(--bg-card);
  box-shadow: 0 0 0 2px var(--accent-ring);
}
.feature-search input::placeholder { color: var(--text-muted); font-size: 11px; }
.feature-search-clear {
  position: absolute; right: 26px;
  top: 10px; height: 30px; display: flex; align-items: center;
  background: none; border: none; color: var(--text-muted); font-size: 14px;
  cursor: pointer; padding: 0 4px; line-height: 1; display: none;
  border-radius: 4px; transition: color .1s;
}
.feature-search-clear:hover { color: var(--text-primary); }
.feature-search.has-value .feature-search-clear { display: flex; }
.feature-search.has-value .feature-search-icon { color: var(--accent); }
.item-list { list-style: none; }
.item-list .empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px 16px; text-align: center; list-style: none;
  animation: itemFadeIn .3s ease;
}
@keyframes itemSlideIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@keyframes itemFadeIn { from { opacity: 0; } to { opacity: 1; } }
.empty-icon { color: var(--border-hover); margin-bottom: 8px; opacity: .5; }
.empty-text { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 4px; }
.empty-hint { font-size: 11px; color: var(--text-muted); opacity: .7; }
.item-list li:not(.inline-edit):not(.empty-state) {
  animation: itemSlideIn .2s ease;
  display: flex; align-items: center; gap: 5px; padding: 7px 8px;
  background: var(--bg-input); border-radius: 10px; margin-bottom: 5px; font-size: 12px;
  cursor: pointer; border: 1.5px solid transparent; transition: all var(--dur-fast);
  position: relative;
}
.item-list .item-actions {
  display: flex; align-items: center; gap: 1px; flex-shrink: 0; margin-left: auto;
}
.item-list li:not(.inline-edit):hover { background: var(--bg-hover); border-color: var(--border); }
.item-list li.selected { background: var(--accent-bg); border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.item-list li.kb-focused:not(.selected) { border-color: var(--accent-light); box-shadow: 0 0 0 2px var(--accent-ring); }
.item-list li.kb-focused::before {
  content: ''; position: absolute; left: 0; top: 25%; bottom: 25%; width: 3px;
  background: var(--accent); border-radius: 0 2px 2px 0;
}
.item-list li:not(.inline-edit) .swatch { width: 14px; height: 14px; border-radius: 3px; flex-shrink: 0; box-shadow: inset 0 0 0 1px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.15); }
.item-list li:not(.inline-edit) .ftype-icon { display: flex; align-items: center; color: var(--text-muted); flex-shrink: 0; margin-right: 2px; }
.item-list li:not(.inline-edit) .fname { flex: 1; font-weight: 600; color: var(--text-primary); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.item-list li:not(.inline-edit) .frange { color: var(--text-muted); font-size: 11px; font-weight: 500; white-space: nowrap; flex-shrink: 0; }
.item-list li.dragging { opacity: 0.35; }
.item-list li.drag-insert-before { box-shadow: 0 -2px 0 0 var(--accent); }
.item-list li.drag-insert-after { box-shadow: 0 2px 0 0 var(--accent); }
.item-list li:not(.inline-edit) .drag-handle { cursor: grab; color: var(--border-hover); font-size: 16px; line-height: 1; user-select: none; flex-shrink: 0; transition: color var(--dur-fast); }
.item-list li:not(.inline-edit) .drag-handle:hover { color: var(--accent); }
.item-list li:not(.inline-edit) .btn-move-up,
.item-list li:not(.inline-edit) .btn-move-down { background: var(--bg-card); border: 1px solid var(--border-light); color: var(--text-muted); font-size: 7px; padding: 2px 3px; cursor: pointer; line-height: 1; border-radius: 3px; transition: color var(--dur-fast), border-color .15s; }
.item-list li:not(.inline-edit) .btn-move-up:hover,
.item-list li:not(.inline-edit) .btn-move-down:hover { color: var(--accent); border-color: var(--accent); }
.item-list li:not(.inline-edit) .btn-vis,
.item-list li:not(.inline-edit) .btn-dup { display: inline-flex; align-items: center; justify-content: center; background: var(--bg-card); border: 1px solid var(--border-light); color: var(--text-muted); padding: 3px; cursor: pointer; line-height: 1; border-radius: 3px; transition: color var(--dur-fast), border-color .15s; }
.item-list li:not(.inline-edit) .btn-vis:hover,
.item-list li:not(.inline-edit) .btn-dup:hover { color: var(--accent); border-color: var(--accent); }
.item-list li.item-hidden:not(.inline-edit) { opacity: 0.45; }
.item-list li.item-hidden:not(.inline-edit) .swatch { opacity: 0.4; }
.item-list li:not(.inline-edit) .track-badge { font-size: 9px; font-weight: 700; color: var(--accent); background: var(--accent-bg); border: 1px solid var(--accent-light); border-radius: 4px; padding: 1px 4px; flex-shrink: 0; line-height: 1.2; }

/* Shared inline edit panel */
.item-list li.inline-edit {
  display: block; background: var(--bg-input); border: 1.5px solid var(--accent-light);
  border-radius: 12px; padding: 14px; margin-bottom: 6px; cursor: default; font-size: 13px;
  box-shadow: 0 2px 8px rgba(99,102,241,.06);
}
.item-list li.inline-edit:hover { border-color: var(--accent-light); }
.item-list li.inline-edit h3 { font-size: 10px; color: var(--accent); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 12px; font-weight: 700; }
.item-list li.inline-edit label { display: block; }
.item-list li.inline-edit input,
.item-list li.inline-edit select,
.item-list li.inline-edit textarea { width: 100%; margin-bottom: 10px; }
/* .two-col base rules handle inline-edit layout */
.item-list li.inline-edit .check-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.item-list li.inline-edit .check-row input[type="checkbox"] { width: auto; margin: 0; }
.item-list li.inline-edit .check-row label { margin: 0; font-weight: 500; }
.item-list li.inline-edit input[type="range"] { padding: 0; margin-bottom: 4px; }
.item-list li.inline-edit .color-field input[type="color"] { width: 32px; height: 26px; padding: 1px; margin: 0; border-radius: 6px; cursor: pointer; border: 1px solid var(--border); }
.item-list li.inline-edit .two-col input[type="color"],
.item-list li.inline-edit > input[type="color"] { width: 100%; height: 34px; padding: 3px; box-sizing: border-box; border-radius: 7px; border: 1px solid var(--border); cursor: pointer; }
/* color input sizing handled by base .two-col rules */
.item-list li.inline-edit .color-field { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.item-list li.inline-edit .color-field label { margin: 0; white-space: nowrap; }
.item-list li.inline-edit .range-val { font-size: 11px; color: var(--text-muted); margin-top: 6px; margin-bottom: 10px; display: block; font-weight: 600; }
.item-list li.inline-edit .slider-num-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.item-list li.inline-edit .slider-num-row input[type="range"] { flex: 1; margin-bottom: 0; }
.item-list li.inline-edit .slider-num-row input[type="number"] { width: 54px; flex-shrink: 0; margin-bottom: 0; text-align: center; }
.item-list li.inline-edit hr { border: none; border-top: 1px solid var(--border-light); margin: 10px 0; }

/* === Plasmid Name === */
#plasmid-name { font-size: 14px; font-weight: 600; text-align: center; }

/* === Map Area === */
#map-container { flex: 1; display: flex; align-items: center; justify-content: center; position: relative; background: var(--bg-card); border-radius: 20px; box-shadow: var(--shadow-md); overflow: hidden; transition: box-shadow .2s ease; }
#map-container.pan-active { box-shadow: var(--shadow-md), inset 0 0 0 2px var(--accent-light); }
.map-drop-overlay {
  display: none; position: absolute; inset: 0; z-index: var(--z-popover);
  flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background: color-mix(in srgb, var(--bg-card) 85%, transparent); backdrop-filter: blur(4px);
  border: 2px dashed var(--border); border-radius: 20px;
  color: var(--text-muted); font-size: 14px; font-weight: 600;
  transition: border-color var(--dur-fast), color var(--dur-fast), background var(--dur-fast);
  pointer-events: none;
}
.map-drop-overlay.visible { display: flex; }
.map-drop-overlay.drag-over {
  border-color: var(--accent); color: var(--accent);
  background: rgba(99,102,241,.06);
}
/* Tooltip actions (expanded on right-click) */
#tooltip .tt-actions { display: none; margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--border-light); }
#tooltip.tt-expanded .tt-actions { display: block; }
#tooltip.tt-expanded { pointer-events: auto; }
#tooltip .tt-actions button:hover:not(:disabled) { background: var(--bg-hover); }
#tooltip .tt-actions button:disabled { opacity: 0.35; cursor: default; }
#tooltip .tt-actions button.tt-action-danger { color: var(--danger); }
#tooltip .tt-actions button.tt-action-danger:hover { background: var(--danger-bg); }
#tooltip .tt-actions button.tt-action-copied { color: var(--accent); font-weight: 600; }
#tooltip .tt-actions hr { border: none; border-top: 1px solid var(--border-light); margin: 2px 0; }

#plasmid-svg { max-width: 100%; max-height: 100%; transition: cursor 0s; }
#plasmid-svg.pan-mode { cursor: grab; }
#plasmid-svg.panning { cursor: grabbing; }

/* Toolbar */
/* === Tabs (inline in toolbar) === */
#tab-list { display: flex; align-items: center; gap: 2px; min-width: 0; overflow-x: auto; overflow-y: hidden; max-width: 50vw; scroll-behavior: smooth; scrollbar-width: none; }
#tab-list::-webkit-scrollbar { height: 0; }
.tab-scroll-btn {
  width: 18px; height: 22px; flex-shrink: 0;
  background: var(--bg-hover); border: 1px solid var(--border-light);
  border-radius: 5px; color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast); padding: 0;
}
.tab-scroll-btn:hover { background: var(--bg-input); color: var(--text-primary); border-color: var(--border); }
.tab-item {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px; height: 26px; min-width: 0;
  background: var(--bg-hover); border: 1px solid transparent;
  border-radius: 6px; cursor: pointer; transition: all var(--dur-fast); flex-shrink: 0;
}
.tab-item:hover { background: var(--bg-input); border-color: var(--border); }
.tab-item.active {
  background: var(--accent-bg); border-color: var(--accent-light);
}
.tab-name {
  font-size: 11px; font-weight: 500; color: var(--text-secondary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100px;
  pointer-events: none;
}
.tab-item.active .tab-name { color: var(--accent); font-weight: 600; }
.tab-bp {
  font-size: 9px; color: var(--text-muted); white-space: nowrap;
  pointer-events: none;
}
.tab-close {
  width: 14px; height: 14px; border-radius: 3px; border: none;
  background: transparent; color: var(--text-muted); font-size: 12px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: all var(--dur-fast); flex-shrink: 0; line-height: 1; padding: 0;
}
.tab-item:hover .tab-close, .tab-item.active .tab-close { opacity: .6; }
.tab-close:hover { opacity: 1 !important; background: var(--danger-bg); color: var(--danger); }
.tab-item.tab-dragging { opacity: 0.4; }
.tab-item.tab-drop-before { box-shadow: -2px 0 0 0 var(--accent); }
.tab-item.tab-drop-after { box-shadow: 2px 0 0 0 var(--accent); }
.tab-name-input {
  font-size: 11px; font-weight: 600; color: var(--text-primary);
  background: var(--bg-card); border: 1.5px solid var(--accent);
  border-radius: 4px; padding: 1px 4px; outline: none; width: 80px;
}
#tab-add {
  width: 22px; height: 22px; flex-shrink: 0;
  background: transparent; border: 1.5px dashed var(--border-hover);
  border-radius: 5px; color: var(--text-muted); font-size: 14px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast); line-height: 1;
}
#tab-add:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); background: var(--accent-bg); }
#tab-add:disabled { opacity: .35; cursor: not-allowed; }

/* === Minimap === */
#minimap {
  position: absolute; top: 56px; right: 14px; z-index: var(--z-minimap);
  width: clamp(100px, 12vw, 180px); height: clamp(100px, 12vw, 180px);
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: 10px; box-shadow: 0 2px 12px rgba(0,0,0,.08);
  overflow: hidden; display: none;
  opacity: 0; transform: translateY(-4px);
  transition: opacity .2s, transform .2s;
}
#minimap.show { display: block; opacity: 1; transform: none; }
#minimap-canvas { width: 100%; height: 100%; display: block; }
#minimap-viewport {
  position: absolute; border: 1.5px solid var(--accent);
  background: rgba(var(--bg-card-rgb), .2);
  border-radius: 2px; pointer-events: none;
  transition: all .08s ease-out;
}

/* === Toast Notifications === */
#toast-container {
  position: absolute; bottom: 80px; left: 50%; transform: translateX(-50%);
  z-index: var(--z-toast); display: flex; flex-direction: column-reverse; gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: 10px;
  background: var(--bg-card); border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  font-size: 12px; font-weight: 500; color: var(--text-primary);
  white-space: nowrap; pointer-events: auto;
  animation: toastIn .25s ease;
}
.toast.toast-out { animation: toastOut .2s ease forwards; }
.toast-icon { font-size: 14px; flex-shrink: 0; }
.toast.toast-success .toast-icon { color: var(--success); }
.toast.toast-error .toast-icon { color: var(--danger); }
.toast.toast-info .toast-icon { color: var(--accent); }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px) scale(.95); } to { opacity: 1; transform: none; } }
@keyframes toastOut { from { opacity: 1; transform: none; } to { opacity: 0; transform: translateY(-8px) scale(.95); } }

/* === Onboarding Hint === */
/* === Close Tab Confirm === */
/* === Tab context menu === */
.tab-ctx-menu {
  position: absolute; z-index: var(--z-toast); display: none;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: 10px; box-shadow: var(--shadow-lg);
  padding: 4px; min-width: 130px;
}
.tab-ctx-menu.open { display: block; }
.tab-ctx-menu button {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 7px 10px; border: none; background: none; border-radius: 6px;
  font-size: 12px; font-weight: 500; color: var(--text-primary);
  cursor: pointer; transition: background var(--dur-fast); text-align: left;
}
.tab-ctx-menu button:hover { background: var(--bg-hover); }
.tab-ctx-menu button.danger { color: var(--danger); }
.tab-ctx-menu button.danger:hover { background: var(--danger-bg); }
.tab-ctx-menu button svg { flex-shrink: 0; }

.close-confirm-popover {
  position: absolute; z-index: var(--z-modal); display: none;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.15);
  padding: 14px 16px; width: 220px;
  animation: modalIn .12s ease;
}
.close-confirm-popover.open { display: block; }
.close-confirm-text { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.close-confirm-text strong { color: var(--accent); }
.close-confirm-hint { font-size: 11px; color: var(--text-muted); margin-bottom: 12px; }
.close-confirm-actions { display: flex; gap: 8px; justify-content: flex-end; }
.close-confirm-actions button {
  padding: 5px 14px; border-radius: 6px; font-size: 12px; font-weight: 600;
  cursor: pointer; border: 1px solid var(--border); background: var(--bg-card);
  color: var(--text-secondary); transition: all var(--dur-fast);
}
.close-confirm-actions button:hover { background: var(--bg-hover); }
.close-confirm-actions button.danger {
  background: var(--danger); border-color: var(--danger); color: #fff;
}
.close-confirm-actions button.danger:hover { background: var(--danger-hover); }

/* === Generic Confirm/Alert Dialog === */
.confirm-overlay {
  position: fixed; inset: 0; z-index: var(--z-toolbar)0; display: none;
  align-items: center; justify-content: center;
  background: rgba(0,0,0,.25); backdrop-filter: blur(2px);
}
.confirm-overlay.open { display: flex; }
.confirm-dialog {
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: 14px; box-shadow: 0 12px 40px rgba(0,0,0,.18);
  padding: 20px 24px; min-width: 260px; max-width: 360px;
  animation: modalIn .15s ease;
}
.confirm-msg { font-size: 13px; font-weight: 500; color: var(--text-primary); line-height: 1.5; margin-bottom: 16px; }
.confirm-msg strong { color: var(--accent); font-weight: 700; }
.confirm-actions { display: flex; gap: 8px; justify-content: flex-end; }
.confirm-actions button {
  padding: 6px 16px; border-radius: 7px; font-size: 12px; font-weight: 600;
  cursor: pointer; border: 1px solid var(--border); background: var(--bg-card);
  color: var(--text-secondary); transition: all var(--dur-fast);
}
.confirm-actions button:hover { background: var(--bg-hover); }
.confirm-actions button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.confirm-actions button.danger:hover { background: var(--danger-hover); }
.confirm-actions button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.confirm-actions button.primary:hover { opacity: .9; }
.confirm-actions:empty { display: none; }

/* === Feature list context menu === */
#feat-ctx-menu { position: fixed; z-index: var(--z-toast); }
.ctx-divider { border: none; border-top: 1px solid var(--border-light); margin: 3px 6px; }

/* === Bulk style by type dialog === */
#bulk-style-overlay, #bulk-marker-overlay {
  position: fixed; inset: 0; z-index: var(--z-modal);
  background: rgba(0,0,0,.35); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
}
#bulk-style-overlay.open, #bulk-marker-overlay.open { display: flex; }
.bulk-style-dialog {
  width: 380px; max-width: 92vw; max-height: 85vh;
  background: var(--bg-card); border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2); overflow: hidden;
  display: flex; flex-direction: column;
  animation: modalIn .15s ease;
}
.bulk-style-header {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px 10px;
}
.bulk-style-header h3 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin: 0; flex: 1; }
.bulk-style-count { font-size: 11px; color: var(--text-muted); font-weight: 500; background: var(--bg-hover); padding: 2px 8px; border-radius: 10px; }
.bulk-style-close {
  background: var(--bg-hover); border: none; width: 24px; height: 24px; padding: 0;
  border-radius: 6px; font-size: 16px; line-height: 1; color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all var(--dur-fast);
}
.bulk-style-close:hover { background: var(--border); color: var(--text-faint); }
.bulk-style-body {
  padding: 6px 18px 14px; overflow-y: auto; flex: 1;
  display: flex; flex-direction: column; gap: 12px;
}
.bulk-style-footer {
  display: flex; gap: 8px; padding: 10px 18px 14px;
  border-top: 1px solid var(--border-light);
}
.bulk-style-footer button {
  flex: 1; padding: 8px 16px; border-radius: 8px; font-size: 12px;
  font-weight: 600; cursor: pointer; border: none; transition: all var(--dur-fast);
}
.bulk-style-footer .btn-primary { background: var(--accent); color: #fff; }
.bulk-style-footer .btn-primary:hover { background: var(--accent-dark); }
.bulk-style-footer .btn-secondary { background: var(--bg-hover); color: var(--text-secondary); border: 1px solid var(--border); }
.bulk-style-footer .btn-secondary:hover { background: var(--border); }
.bulk-row { display: flex; flex-direction: column; gap: 4px; }
.bulk-row > label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.bulk-row > label.bulk-check {
  font-size: 12px; font-weight: 500; color: var(--text-primary);
  text-transform: none; letter-spacing: 0; display: inline-flex;
  align-items: center; gap: 6px; cursor: pointer; white-space: nowrap;
}
.bulk-check input[type="checkbox"] { width: auto; margin: 0; }
hr.bulk-divider { border: none; border-top: 1px solid var(--border-light); margin: 4px 0; width: 100%; }
.bulk-two-col { flex-direction: row; gap: 10px; }
.bulk-two-col > div { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.bulk-two-col > div > label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.bulk-row select, .bulk-row input[type="number"] {
  height: 32px; padding: 0 8px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text-primary); font-size: 12px;
}
.bulk-row select:focus, .bulk-row input[type="number"]:focus { border-color: var(--accent); outline: none; }
.bulk-row input[type="color"] { width: 100%; height: 32px; padding: 2px; border-radius: 7px; border: 1px solid var(--border); cursor: pointer; }
.bulk-range-row { display: flex; align-items: center; gap: 8px; }
.bulk-range-row input[type="range"] { flex: 1; }
.bulk-range-row span { font-size: 11px; color: var(--text-muted); min-width: 32px; text-align: right; }
.bulk-color-picker { padding: 4px; }

/* === Feature Style Theme Modal === */
#style-theme-modal { position: fixed; }
.style-theme-hint { font-size: 12px; color: var(--text-muted); margin: 0; line-height: 1.5; padding: 0 18px 14px; }
.style-theme-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; max-height: calc(100vh - 240px); overflow-y: auto; overflow-x: hidden;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
  padding: 0 18px 18px;
}
.style-theme-item {
  border: 1.5px solid var(--border-light); border-radius: 12px;
  padding: 14px 12px 12px; cursor: pointer;
  background: var(--bg-card); transition: all var(--dur-fast);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.style-theme-item:hover { border-color: var(--accent); background: var(--bg-input); box-shadow: 0 2px 12px rgba(99,102,241,.1); }
.style-theme-item:active { transform: scale(.97); }
.style-theme-preview { width: 80px; height: 80px; flex-shrink: 0; }
.style-theme-name { font-size: 13px; font-weight: 700; color: var(--text-primary); }
.style-theme-desc { font-size: 11px; color: var(--text-muted); text-align: center; line-height: 1.4; }

.re-divider {
  display: flex; align-items: center; gap: 8px; margin: 6px 0 4px;
  font-size: 11px; color: var(--text-muted); text-transform: lowercase;
}
.re-divider::before, .re-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border-light);
}

.re-badge {
  font-size: 8px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .4px; padding: 2px 4px; border-radius: 3px;
  background: var(--accent); color: #fff; line-height: 1; flex-shrink: 0;
}
.re-cut-diagram {
  display: flex; flex-direction: column; gap: 0; margin-bottom: 8px;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; font-size: 11px;
  letter-spacing: .5px; color: var(--text-muted); line-height: 1.4;
}
.re-cut-diagram span { white-space: pre; }
.tt-re-cut {
  display: flex; flex-direction: column; gap: 0;
  margin-top: 5px; padding-top: 5px; border-top: 1px solid var(--bg-hover);
}
.tt-re-strand {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; font-size: 11px;
  letter-spacing: .5px; color: var(--text-muted); white-space: pre; line-height: 1.4;
}
.tt-re-arrow-row {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; font-size: 8px;
  color: var(--accent); white-space: pre; line-height: 1; letter-spacing: .5px;
}
.tt-re-oh {
  font-family: 'Inter', -apple-system, sans-serif; font-size: 10px; font-weight: 600;
  color: var(--text-muted); margin-top: 4px; letter-spacing: 0;
}
.inline-edit input[readonly] {
  opacity: .6; cursor: default; background: var(--bg-hover);
}

/* === Restriction Enzyme Finder Panel === */
#panel { transition: width var(--dur-normal) ease, min-width var(--dur-normal) ease; }
#panel.re-expanded { width: 640px; min-width: 640px; }
.re-panel {
  display: none; flex-direction: column; flex: 1; min-height: 0; overflow: hidden;
}
.re-panel-header {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px 10px; font-size: 14px; font-weight: 700; color: var(--text-primary);
  border-bottom: 1px solid var(--border-divider); flex-shrink: 0;
}
.re-panel-back {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; padding: 0; border: none; border-radius: 6px;
  background: none; color: var(--text-muted); cursor: pointer; transition: all var(--dur-fast);
}
.re-panel-back:hover { background: var(--bg-hover); color: var(--text-primary); }
.re-controls { padding: 12px 18px; display: flex; flex-direction: column; gap: 8px; flex-shrink: 0; }
.re-controls input[type="text"] {
  width: 100%; box-sizing: border-box; padding: 7px 10px; margin-bottom: 0;
  border: 1.5px solid var(--border); border-radius: 8px;
  background: var(--bg-input); color: var(--text-primary); font-size: 13px;
  outline: none; transition: border-color var(--dur-fast);
}
.re-controls input[type="text"]:focus-visible { border-color: var(--accent); }
.re-filter-row {
  display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted);
}
.re-filter-row label { white-space: nowrap; flex-shrink: 0; }
.re-filter-row select {
  padding: 6px 8px; border: 1.5px solid var(--border); border-radius: 6px;
  background: var(--bg-input); color: var(--text-primary); font-size: 12px;
  outline: none; cursor: pointer; line-height: 1.4; box-sizing: border-box; margin-bottom: 0;
}
.re-filter-row select:focus-visible { border-color: var(--accent); }
.re-add-selected {
  margin-left: auto; padding: 6px 12px; border-radius: 6px; font-size: 12px;
  font-weight: 600; border: 1.5px solid var(--accent); background: var(--accent);
  color: #fff; cursor: pointer; transition: all var(--dur-fast); white-space: nowrap;
  flex-shrink: 0; line-height: 1.4; box-sizing: border-box;
}
.re-add-selected:hover:not(:disabled) { filter: brightness(1.1); }
.re-add-selected:disabled { opacity: .4; cursor: default; }
.re-table-wrap {
  flex: 1; min-height: 0; overflow-y: auto;
  padding: 0 18px; scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.re-table { border-collapse: collapse; font-size: 12px; }
.re-table thead { position: sticky; top: 0; z-index: 1; }
.re-table th {
  text-align: left; padding: 6px 12px; font-size: 11px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: .3px;
  background: var(--bg-card); border-bottom: 1.5px solid var(--border-light);
}
.re-table td {
  padding: 5px 12px; border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}
.re-table tr:hover td { background: var(--bg-hover); }
.re-th-check, .re-td-check { width: 32px; text-align: center; padding-left: 12px; padding-right: 0; }
.re-td-name { font-weight: 600; color: var(--text-primary); white-space: nowrap; }
.re-td-seq { white-space: nowrap; }
.re-td-seq code {
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: 11px;
  background: var(--bg-input); padding: 1px 5px; border-radius: 4px;
  color: var(--accent); letter-spacing: .5px;
}
.re-td-oh { font-size: 11px; white-space: nowrap; }
.re-oh-5 { color: var(--accent); }
.re-oh-3 { color: #ea580c; }
.re-oh-blunt { color: var(--text-muted); }
.re-td-cuts { font-weight: 700; text-align: center; white-space: nowrap; }
.re-cuts-zero { color: var(--text-muted); opacity: .5; }
.re-cuts-one { color: var(--success, #16a34a); }
.re-td-pos { font-size: 11px; color: var(--text-muted); white-space: nowrap; }
.re-none { color: var(--text-muted); opacity: .4; }
.re-td-action { text-align: right; white-space: nowrap; padding-right: 12px; }
.re-add-one {
  padding: 2px 8px; border-radius: 5px; font-size: 11px; font-weight: 600;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text-primary);
  cursor: pointer; transition: all var(--dur-fast);
}
.re-add-one:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.re-add-one:disabled { opacity: .5; cursor: default; }
.re-table tr[data-re-idx]:hover td { background: var(--bg-hover); }
.re-highlight-group { animation: reHighlightIn .15s ease; }
@keyframes reHighlightIn { from { opacity: 0; } to { opacity: 1; } }
.re-empty {
  padding: 32px 18px; text-align: center; font-size: 13px; color: var(--text-muted);
}
.re-footer {
  padding: 10px 18px; font-size: 11px; color: var(--text-muted);
  border-top: 1px solid var(--border-light); flex-shrink: 0;
}

/* === New Plasmid Modal === */
.modal-overlay {
  position: absolute; inset: 0; z-index: var(--z-modal);
  background: rgba(0,0,0,.35); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal-card {
  width: 340px; background: var(--bg-card); border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2); overflow: hidden;
  animation: modalIn .15s ease;
}
.modal-card.style-theme-card { width: 600px; max-width: calc(100vw - 60px); }
@keyframes modalIn { from { opacity: 0; transform: scale(.95) translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes modalOut { from { opacity: 1; transform: none; } to { opacity: 0; transform: scale(.95) translateY(8px); } }
.modal-overlay.closing { pointer-events: none; }
.modal-overlay.closing .modal-card { animation: modalOut .12s ease forwards; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 10px;
}
.modal-header span {
  font-size: 14px; font-weight: 700; color: var(--text-primary);
}
.modal-header button {
  background: var(--bg-hover); border: none; width: 24px; height: 24px; padding: 0;
  border-radius: 6px; font-size: 16px; line-height: 1; color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all var(--dur-fast);
}
.modal-header button:hover { background: var(--border); color: var(--text-faint); }
.modal-body { padding: 6px 14px 14px; }
.modal-body hr { border: none; border-top: 1px solid var(--border-divider); margin: 8px 0; }
.modal-option {
  display: flex; align-items: center; gap: 12px; width: 100%;
  padding: 12px; background: none; border: 1.5px solid transparent;
  border-radius: 12px; cursor: pointer; text-align: left; transition: all var(--dur-fast);
}
.modal-option:hover { background: var(--bg-input); border-color: var(--border); }
.modal-option-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent-bg); display: flex; align-items: center;
  justify-content: center; color: var(--accent); flex-shrink: 0;
}
.modal-option-title { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.modal-option-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.modal-drop-zone {
  display: none; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  border: 2px dashed var(--border); border-radius: 12px;
  padding: 24px; margin-top: 4px;
  color: var(--text-muted); font-size: 12px; font-weight: 500;
  transition: all var(--dur-fast);
}
.modal-drop-zone.visible { display: flex; }
.modal-drop-zone.drag-over {
  border-color: var(--accent); background: var(--accent-bg, rgba(99,102,241,.06));
  color: var(--accent);
}
.modal-section-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .6px; color: var(--text-muted); margin-bottom: 8px; padding: 0 4px;
}
.modal-templates { display: flex; flex-direction: column; gap: 4px; margin-bottom: 4px; }
.modal-template-btn {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 10px 14px; background: none;
  border: 1.5px solid var(--border); border-radius: 10px;
  cursor: pointer; transition: all var(--dur-fast);
}
.modal-template-btn:hover { border-color: var(--accent); background: var(--accent-bg); }
.modal-tpl-name { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.modal-tpl-size { font-size: 11px; color: var(--text-muted); font-family: 'SF Mono', 'Fira Code', monospace; }
.modal-fetch-row { display: flex; gap: 6px; margin-bottom: 4px; }
.modal-fetch-row > * { margin: 0; height: 34px; box-sizing: border-box; font-size: 12px; border-radius: 8px; border: 1.5px solid var(--border); }
.modal-fetch-row input {
  flex: 1; padding: 0 10px; background: var(--bg-input); color: var(--text-primary);
  font-family: inherit; outline: none; transition: border-color var(--dur-fast);
}
.modal-fetch-row input:focus-visible { border-color: var(--accent); }
.modal-fetch-btn {
  padding: 0 14px; font-weight: 600; border-color: var(--accent);
  background: var(--accent); color: #fff; cursor: pointer;
  transition: opacity var(--dur-fast); white-space: nowrap; flex-shrink: 0;
}
.modal-fetch-btn:hover { opacity: 0.85; }
.modal-fetch-btn:disabled { opacity: 0.5; cursor: default; }
.modal-fetch-status { font-size: 11px; color: var(--text-muted); min-height: 16px; padding: 0 4px; }

#toolbar { position: absolute; top: 12px; right: 12px; left: 12px; display: flex; align-items: center; gap: 2px; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: 10px; padding: 5px 6px; box-shadow: 0 2px 12px rgba(0,0,0,.06); z-index: var(--z-toolbar); }

.toolbar-divider { width: 1px; height: 18px; background: var(--border-light); margin: 0 1px; flex-shrink: 0; }
.toolbar-spacer { flex: 1; }
.toolbar-btn { width: 26px; height: 26px; display: flex; align-items: center; justify-content: center; border: none; background: transparent; border-radius: 6px; cursor: pointer; color: var(--text-muted); transition: all var(--dur-fast); }
.toolbar-bp {
  font-size: 11px; font-weight: 600; color: var(--text-muted); white-space: nowrap;
  padding: 3px 8px; letter-spacing: .3px; background: none; border: 1.5px solid transparent;
  border-radius: var(--radius-input); cursor: pointer; transition: all var(--dur-fast); font-family: inherit;
}
.toolbar-bp:hover { background: var(--bg-hover); border-color: var(--border-light); color: var(--text-secondary); }

/* === Plasmid Stats Popover === */
.stats-popover {
  position: absolute; width: var(--popover-width); z-index: var(--z-popover); background: var(--bg-card);
  border: 1px solid var(--border-light); border-radius: var(--radius-popover);
  box-shadow: var(--shadow-popover);
  opacity: 0; transform: translateY(-6px); pointer-events: none;
  transition: opacity var(--dur-fast), transform .15s;
  max-height: calc(100vh - 90px); overflow-y: auto; overflow-x: hidden;
}
.stats-popover.open { opacity: 1; transform: translateY(0); pointer-events: auto; display: block !important; }
.stats-popover .popover-body { overflow-x: hidden; }
.stats-table { width: 100%; border-collapse: collapse; font-size: 12px; table-layout: fixed; }
.stats-table th { text-align: left; font-weight: 600; color: var(--text-secondary); padding: 6px 0; border-bottom: 1px solid var(--border-light); }
.stats-table td { padding: 5px 0; color: var(--text-primary); }
.stats-table td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
.stats-table td[data-tip] {
  cursor: help; position: relative;
}
.stats-table td[data-tip]:hover { color: var(--accent); }
.stats-table td[data-tip]::after {
  content: attr(data-tip);
  position: absolute; bottom: 100%; left: 0;
  background: var(--bg-tooltip, #1e293b); color: #fff;
  font-size: 11px; font-weight: 400; line-height: 1.4;
  padding: 5px 8px; border-radius: 6px; white-space: normal; width: max-content; max-width: 260px;
  pointer-events: none; opacity: 0; transform: translateY(4px);
  transition: opacity var(--dur-fast), transform .12s;
  z-index: var(--z-toast);
}
.stats-table td[data-tip]:hover::after { opacity: 1; transform: translateY(-2px); }
.stats-section-title { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin: 12px 0 4px; }
.stats-section-title:first-child { margin-top: 0; }
.stats-bar { display: flex; height: 8px; border-radius: 4px; overflow: hidden; margin: 6px 0 10px; }
.stats-bar span { height: 100%; transition: width .3s; }
.toolbar-btn:hover:not(:disabled) { background: var(--bg-hover); color: var(--accent); }
.toolbar-btn:disabled { opacity: 0.3; cursor: default; }
.toolbar-btn svg { display: block; flex-shrink: 0; }
.toolbar-btn-active { background: var(--accent-bg) !important; color: var(--accent) !important; box-shadow: inset 0 0 0 1.5px var(--accent-light); }
.toolbar-btn-accent { color: var(--accent) !important; }

/* Info popover */
#info-popover { position: absolute; top: var(--popover-toolbar-top); right: 14px; width: var(--popover-width); max-height: calc(100% - var(--popover-toolbar-top) - 14px); background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-popover); box-shadow: var(--shadow-popover); z-index: var(--z-popover); opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity var(--dur-fast), transform .15s; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border-hover) transparent; }
#info-popover.open { opacity: 1; transform: translateY(0); pointer-events: auto; }

.info-body { padding: 0 16px 16px; }
.info-logo { font-size: 28px; text-align: center; margin-bottom: 4px; }
.info-title { font-size: 16px; font-weight: 800; text-align: center; color: var(--text-primary); }
.info-version { font-size: 11px; text-align: center; color: var(--text-muted); margin-bottom: 8px; font-family: 'SF Mono', 'Fira Code', monospace; }
.info-desc { font-size: 12px; color: var(--text-secondary); text-align: center; line-height: 1.5; margin-bottom: 10px; }
.info-body hr { border: none; border-top: 1px solid var(--bg-hover); margin: 0 0 10px; }
.info-row { display: flex; justify-content: space-between; font-size: 12px; padding: 3px 0; }
.info-row .info-label { color: var(--text-muted); font-weight: 600; }
.info-row span, .info-row a { color: var(--text-primary); }
.info-row a { color: var(--accent); text-decoration: none; }
.info-row a:hover { text-decoration: underline; }
.info-shortcuts-title { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: 6px; }
.info-collapsible {
  cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  user-select: none; padding: 4px 0; transition: margin-bottom .15s;
}
.info-collapsible svg { transition: transform var(--dur-normal); }
.info-collapsible.collapsed svg { transform: rotate(-90deg); }
.info-shortcuts-body {
  overflow: hidden; transition: max-height .25s ease, opacity .2s;
}
.info-shortcuts-body.collapsed { max-height: 0; opacity: 0; margin: 0; }
.info-shortcut { display: flex; align-items: center; font-size: 12px; padding: 4px 0; color: var(--text-primary); gap: 10px; }
.info-shortcut .shortcut-keys { flex-shrink: 0; white-space: nowrap; }
.info-shortcut .shortcut-desc { color: var(--text-muted); font-size: 11px; margin-left: auto; text-align: right; }
.info-shortcut kbd { background: var(--bg-input); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 10px; font-family: inherit; color: var(--text-secondary); min-width: 16px; text-align: center; }
.info-notice { font-size: 11px; color: var(--text-secondary); line-height: 1.55; background: var(--accent-bg); border-radius: 8px; padding: 10px 12px; }
.info-notice strong { color: var(--accent); font-weight: 700; }
.info-cite { font-size: 11px; color: var(--text-secondary); line-height: 1.55; background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; }
.info-cite a { color: var(--accent); text-decoration: none; }
.info-cite a:hover { text-decoration: underline; }
.info-copy-cite { display: block; width: 100%; padding: 6px 0; font-size: 11px; font-weight: 600; color: var(--accent); background: none; border: 1.5px solid var(--accent); border-radius: 8px; cursor: pointer; transition: all var(--dur-fast); text-align: center; margin-bottom: 2px; }
.info-copy-cite:hover { background: var(--accent-bg); }
.info-reset-onboarding {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; padding: 7px 0; font-size: 11px; font-weight: 500;
  color: var(--text-secondary); background: none;
  border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; transition: all var(--dur-fast); text-align: center;
}
.info-reset-onboarding:hover { color: var(--text-primary); border-color: var(--accent); background: var(--accent-bg); }
.info-reset-onboarding svg { flex-shrink: 0; }

/* === Theme Selector Popover === */
#theme-popover {
  position: absolute; top: var(--popover-toolbar-top); right: 44px; width: 200px;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-popover); box-shadow: var(--shadow-popover);
  z-index: var(--z-popover); opacity: 0; transform: translateY(-6px);
  pointer-events: none; transition: opacity var(--dur-fast), transform .15s;
}
#theme-popover.open { opacity: 1; transform: translateY(0); pointer-events: auto; }

.theme-popover-body { padding: 4px 8px 8px; display: flex; flex-direction: column; gap: 2px; max-height: calc(100vh - 160px); overflow-y: auto; }
.theme-option {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px; border: 1.5px solid transparent; border-radius: 8px;
  background: transparent; cursor: pointer; transition: all var(--dur-fast);
  width: 100%; text-align: left;
}
.theme-option:hover { background: var(--bg-hover); border-color: var(--border); }
.theme-option.active { background: var(--accent-bg); border-color: var(--accent-light); }
.theme-option.active .theme-label { color: var(--accent); font-weight: 700; }
.theme-preview {
  flex-shrink: 0; width: 40px; height: 28px;
  border-radius: 5px; border: 1px solid rgba(0,0,0,.15);
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
  display: flex; align-items: center; justify-content: center;
  padding: 3px; overflow: hidden;
}
.tp-card {
  width: 100%; height: 100%; border-radius: 3px;
  display: flex; flex-direction: column; align-items: flex-start;
  justify-content: center; gap: 2px; padding: 3px 4px;
}
.tp-accent {
  width: 10px; height: 3px; border-radius: 1px;
}
.tp-line {
  width: 18px; height: 2px; border-radius: 1px;
}
.tp-line.short { width: 12px; }
.theme-group-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .7px; color: var(--text-muted); padding: 6px 8px 2px;
}
.theme-group-label:first-child { padding-top: 2px; }
.theme-label {
  font-size: 13px; font-weight: 700; color: var(--text-primary);
  letter-spacing: .2px;
}

/* === Color Picker === */
.color-row { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 10px; }
.color-picker-enhanced { display: flex; flex-direction: column; gap: 2px; margin-bottom: 10px; }
.color-picker-enhanced .color-row { margin-bottom: 2px; }
.cp-preview {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; margin-bottom: 4px;
  background: var(--bg-hover); border-radius: 8px;
}
.cp-preview-swatch {
  width: 24px; height: 24px; border-radius: 6px; flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.1);
}
.cp-preview-hex {
  font-size: 12px; font-weight: 600; font-family: 'SF Mono', 'Consolas', monospace;
  color: var(--text-secondary); cursor: pointer; user-select: all;
  transition: color var(--dur-fast);
}
.cp-preview-hex:hover { color: var(--accent); }
.cp-section-label {
  font-size: 9px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .5px; color: var(--text-muted); margin: 4px 0 2px;
}
.cp-tool-row {
  display: flex; gap: 4px; margin-top: 4px;
}
.cp-tool-row > * {
  height: 30px; box-sizing: border-box; margin: 0; vertical-align: middle;
}
.cp-hex-input {
  flex: 1; padding: 0 8px; font-size: 12px; font-family: 'SF Mono', 'Consolas', monospace;
  border: 1px solid var(--border); border-radius: 6px; background: var(--bg-input);
  color: var(--text-primary); min-width: 0;
}
.cp-hex-input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-ring); }
button.cp-tool-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; padding: 0; border: 1px solid var(--border); line-height: 1;
  border-radius: 6px; background: var(--bg-input); color: var(--text-muted);
  cursor: pointer; transition: all var(--dur-fast); flex-shrink: 0;
}
button.cp-tool-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-bg); }
.color-opt { width: 22px; height: 22px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; transition: all var(--dur-fast); box-shadow: inset 0 0 0 1px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.12); position: relative; outline: none; }
.color-opt:focus-visible { box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px var(--accent); }
.color-opt:hover { transform: scale(1.15); }
.color-opt.active { border-color: var(--text-primary); box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px currentColor; }
/* === Direction Toggle === */
.dir-toggle { display: flex; margin-bottom: 10px; background: var(--bg-hover); border-radius: 8px; padding: 3px; }
.dir-toggle button { flex: 1; background: transparent; color: var(--text-secondary); padding: 6px; font-size: 12px; border-radius: 6px; }
.dir-toggle button.active { background: var(--bg-active-toggle); color: var(--accent); box-shadow: var(--shadow-sm); }
.dir-toggle button:not(.active):hover { color: var(--text-faint); }

/* === Tooltip === */
#tooltip { position: absolute; background: rgba(var(--bg-card-rgb),.97); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; font-size: 12px; pointer-events: none; opacity: 0; transition: opacity var(--dur-fast); z-index: var(--z-minimap); white-space: nowrap; box-shadow: var(--shadow-lg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); max-width: min(380px, calc(100vw - 440px)); }
#tooltip .tt-name { font-weight: 700; font-size: 13px; color: var(--text-primary); margin-bottom: 5px; display: flex; align-items: center; gap: 6px; }
#tooltip .tt-name .tt-type { font-weight: 500; font-size: 10px; color: var(--accent); background: var(--accent-bg); padding: 1px 6px; border-radius: 4px; text-transform: uppercase; letter-spacing: .4px; }
#tooltip .tt-meta { display: flex; gap: 10px; color: var(--text-secondary); font-size: 11px; margin-bottom: 3px; }
#tooltip .tt-meta span { display: flex; align-items: center; gap: 4px; }
#tooltip .tt-meta .tt-sep { width: 1px; height: 12px; background: var(--border-light); flex-shrink: 0; }
#tooltip .tt-range { color: var(--text-muted); font-size: 11px; font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; }
#tooltip .tt-seq { margin-top: 5px; padding-top: 5px; border-top: 1px solid var(--bg-hover); color: var(--text-secondary); font-size: 10px; font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; white-space: pre-wrap; word-break: break-all; max-width: min(350px, calc(100vw - 460px)); max-height: 60px; overflow: hidden; display: none; line-height: 1.4; }
#tooltip .tt-seq.visible { display: block; }
#tooltip .tt-protein { margin-top: 3px; padding-top: 3px; border-top: 1px solid var(--bg-hover); color: var(--accent); font-size: 10px; font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace; white-space: pre-wrap; word-break: break-all; max-width: min(350px, calc(100vw - 460px)); max-height: 50px; overflow: hidden; display: none; line-height: 1.4; letter-spacing: .5px; }
#tooltip .tt-protein.visible { display: block; }
#tooltip .tt-actions button { display: block; width: 100%; padding: 4px 8px; background: none; font-size: 11px; color: var(--text-primary); border-radius: 5px; text-align: left; transition: background var(--dur-fast); }
@media (max-height: 800px) {
  #tooltip { padding: 8px 12px; font-size: 11px; border-radius: 8px; }
  #tooltip .tt-name { font-size: 12px; margin-bottom: 4px; gap: 5px; }
  #tooltip .tt-meta { font-size: 11px; gap: 8px; margin-bottom: 2px; }
  #tooltip .tt-range { font-size: 10px; }
  #tooltip .tt-seq, #tooltip .tt-protein { font-size: 10px; max-height: 40px; }
  #tooltip .tt-actions button { padding: 3px 7px; font-size: 11px; }
}

/* === Feature-only inline edit overrides === */
/* #add-panel visibility managed via collapsible state, not .hidden */
.item-list li.inline-edit .dir-toggle { display: flex; margin-bottom: 10px; background: var(--bg-hover); border-radius: 8px; padding: 3px; }
.item-list li.inline-edit .color-row { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 10px; }

/* === Checkbox === */
.check-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.check-row input[type="checkbox"] { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); cursor: pointer; border-radius: 4px; }
.check-row label { margin: 0; font-weight: 500; cursor: pointer; }

/* === Range Inputs === */
input[type="range"] { padding: 0; margin-bottom: 4px; accent-color: var(--accent); height: 4px; }
.range-val { font-size: 11px; color: var(--text-muted); margin-top: 6px; margin-bottom: 10px; display: block; font-weight: 600; }

/* === Two-column Layout === */
.two-col { display: flex; gap: 8px; }
.two-col > div { flex: 1; }

/* === Slider + Number Row === */
.slider-num-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.slider-num-row input[type="range"] { flex: 1; margin-bottom: 0; }
.slider-num-row input[type="number"] { width: 58px; flex-shrink: 0; margin-bottom: 0; text-align: center; font-size: 12px; padding: 6px 4px; }

/* === Color Input Compact === */
.color-field { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.color-field label { margin: 0; white-space: nowrap; }
input[type="color"] { width: 32px; height: 26px; padding: 1px; margin: 0; border-radius: 6px; cursor: pointer; border: 1px solid var(--border); transition: border-color var(--dur-fast); }
input[type="color"]:hover { border-color: var(--accent); }
.two-col input[type="color"] { width: 100%; padding: 3px; box-sizing: border-box; }
.two-col input[type="color"],
.two-col input[type="number"],
.two-col select { height: 34px; box-sizing: border-box; }
.color-field input[type="color"] { flex-shrink: 0; }
/* === Hints === */
.hint { font-weight: 500; color: var(--border-hover); font-size: 10px; }

/* === Validation Errors === */
.error-msg { background: var(--danger-bg); border: 1px solid var(--danger-border); color: var(--danger-hover); border-radius: 8px; padding: 8px 12px; font-size: 12px; margin-bottom: 10px; font-weight: 500; }
.input-error { border-color: var(--danger) !important; box-shadow: 0 0 0 3px rgba(239,68,68,.1) !important; }

/* === Center Label Edit Popover === */
/* === Shared popover/context menu styles === */
.popover-menu {
  position: absolute; display: none; background: var(--bg-card);
  border-radius: var(--radius-popover);
  box-shadow: 0 12px 40px rgba(0,0,0,.12), 0 0 0 1px rgba(0,0,0,.04);
  z-index: var(--z-popover-menu); overflow: hidden;
  opacity: 0; transform: translateY(4px) scale(.97);
  transition: opacity var(--dur-fast) ease, transform .15s ease;
}
.popover-menu.open { display: block; opacity: 1; transform: translateY(0) scale(1); }
@keyframes popoverOut { from { opacity: 1; transform: translateY(0) scale(1); } to { opacity: 0; transform: translateY(4px) scale(.97); } }
.popover-menu.closing { display: block; animation: popoverOut .12s ease forwards; pointer-events: none; }

/*
 * Shared popover header - use for ALL popovers/context menus.
 * HTML pattern:
 *   <div class="popover-header">
 *     <span>Title</span>
 *     <button id="xxx-close">&times;</button>
 *   </div>
 */
.popover-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--border-light);
}
.popover-header span {
  font-size: 11px; font-weight: 700; color: var(--accent);
  letter-spacing: .5px; text-transform: uppercase;
}
.popover-header button {
  background: var(--bg-hover); border: none; width: 22px; height: 22px; padding: 0;
  border-radius: 6px; font-size: 14px; line-height: 1; color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all var(--dur-fast);
}
.popover-header button:hover { background: var(--border); color: var(--text-faint); text-decoration: none; }

.popover-body {
  padding: 12px 14px; max-height: 420px; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.popover-body::-webkit-scrollbar { width: 4px; }
.popover-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.popover-body label { font-size: 11px; }
.popover-body input, .popover-body select { font-size: 12px; padding: 6px 8px; margin-bottom: 8px; }
.popover-body .slider-num-row { margin-bottom: 8px; }
.popover-body .color-field input[type="color"] { width: 28px; height: 22px; }
.popover-body > input[type="color"],
#bb-lin-tick-section input[type="color"] { width: 100%; height: 34px; padding: 3px; box-sizing: border-box; }
.popover-body .two-col { margin-bottom: 4px; }
.popover-body input[type="range"] { padding: 0; }

/* Popover tabs - matches sidebar .panel-tabs */
.popover-tabs {
  display: flex; border-bottom: 2px solid var(--border-divider);
  flex-shrink: 0; background: var(--bg-input);
}
.popover-tabs button {
  flex: 1; padding: 8px 0; font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .6px;
  color: var(--text-muted); background: none; border: none;
  cursor: pointer; position: relative; transition: color var(--dur-fast);
}
.popover-tabs button.active { color: var(--accent); }
.popover-tabs button.active::after {
  content: ''; position: absolute; bottom: -2px; left: 20%; right: 20%;
  height: 2px; background: var(--accent); border-radius: 1px;
}
.popover-tabs button:hover:not(.active) { color: var(--text-secondary); }

.popover-tab-pane {
  display: none; padding: 12px 14px; max-height: 320px; overflow-y: auto;
}
.popover-tab-pane.active { display: block; animation: tabFadeIn var(--dur-normal) ease; }
.popover-tab-pane { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.popover-tab-pane::-webkit-scrollbar { width: 4px; }
.popover-tab-pane::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.popover-tab-pane label { font-size: 11px; }
.popover-tab-pane input, .popover-tab-pane select { font-size: 12px; padding: 6px 8px; margin-bottom: 8px; }
.popover-tab-pane .slider-num-row { margin-bottom: 8px; }
.popover-tab-pane .color-field input[type="color"] { width: 28px; height: 22px; }
.popover-tab-pane > input[type="color"] { width: 100%; height: 34px; padding: 3px; box-sizing: border-box; }
.popover-tab-pane .two-col { margin-bottom: 4px; }
.popover-tab-pane input[type="range"] { padding: 0; }

/* Per-menu widths */
#center-edit-popover { width: 280px; }
#bb-ctx-menu { width: 240px; }
#tick-ctx-menu { width: 260px; }
.popover-body hr { margin: 8px 0; border: none; border-top: 1px solid var(--border-light); }
.center-name-text { cursor: text; transition: fill var(--dur-fast); }
.center-name-text:hover { fill: var(--accent); }
.center-len-text { cursor: pointer; transition: fill var(--dur-fast); }
.center-len-text:hover { fill: var(--accent); }
.backbone-hover-ring, .tick-hover-ring, .ring-hover-ring { pointer-events: none; opacity: 0; transition: opacity var(--dur-fast); }
.backbone-hover-ring.visible, .tick-hover-ring.visible, .ring-hover-ring.visible { opacity: 1; }



/* === Export FAB === */
/* === Export flash animation === */
@keyframes exportFlash {
  0% { box-shadow: inset 0 0 0 0 rgba(99,102,241,0); }
  30% { box-shadow: inset 0 0 60px 20px rgba(99,102,241,.12); }
  100% { box-shadow: inset 0 0 0 0 rgba(99,102,241,0); }
}
#map-container.export-flash { animation: exportFlash .5s ease-out; }

#export-fab { position: absolute; bottom: 24px; right: 24px; display: flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; border: none; border-radius: 14px; padding: 12px 22px; font-size: 13px; font-weight: 700; cursor: pointer; box-shadow: 0 4px 20px var(--accent-shadow); transition: all .2s; z-index: var(--z-toolbar); letter-spacing: .3px; }
#export-fab:hover { box-shadow: 0 8px 28px rgba(99,102,241,.45); transform: translateY(-2px); }
#export-fab:active { transform: translateY(0); }
#export-fab svg { flex-shrink: 0; }

/* === Export Popover === */
#export-popover { position: absolute; bottom: 80px; right: 24px; width: var(--popover-width); background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-popover); box-shadow: var(--shadow-popover); z-index: var(--z-popover); display: none; overflow: hidden; max-height: calc(100vh - 120px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
#export-popover.open { display: block; animation: exportSlideUp .2s ease; }
@keyframes exportSlideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes exportSlideDown { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(10px); } }
#export-popover.closing { display: block; animation: exportSlideDown .12s ease forwards; pointer-events: none; }

.export-body { padding: 10px; }
.export-body hr { border: none; border-top: 1px solid var(--bg-hover); margin: 4px 6px; }
.export-option { display: flex; align-items: center; gap: 12px; width: 100%; padding: 12px; background: none; border: 1.5px solid transparent; border-radius: 12px; cursor: pointer; text-align: left; transition: all var(--dur-fast); }
.export-option:hover { background: var(--bg-input); border-color: var(--border); }
.export-option:active { background: var(--bg-hover); }
.export-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--accent-bg), #e0e7ff); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; color: var(--accent); flex-shrink: 0; letter-spacing: -.5px; }
.export-title { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.export-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.export-png-opts { padding: 6px 12px 4px; }
.export-png-opts label { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.export-png-opts select { font-size: 12px; padding: 6px 8px; }
.export-png-opts .check-row { margin-bottom: 6px; }
.export-png-opts .check-row label { font-size: 12px; }
.export-pdf-opts { padding: 6px 12px 4px; }
.export-pdf-opts label { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.export-pdf-opts select { font-size: 12px; padding: 6px 8px; margin-bottom: 6px; }
.export-pdf-opts .check-row { margin-bottom: 6px; }
.export-pdf-opts .check-row label { font-size: 12px; }

/* === Tips Popover (anchored above panel footer) === */
.footer-sep { margin: 0 6px; color: var(--border); }
#tips-toggle {
  background: none; border: none; color: var(--accent); font-size: 10px;
  font-weight: 600; cursor: pointer; padding: 0; letter-spacing: .2px;
}
#tips-toggle:hover { text-decoration: underline; }
.tips-card {
  position: absolute; bottom: calc(100% + 8px); left: 8px; right: 8px;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-popover); box-shadow: var(--shadow-popover);
  z-index: var(--z-popover);
  opacity: 0; transform: translateY(6px); pointer-events: none;
  transition: opacity var(--dur-fast), transform .15s;
  overflow: hidden;
}
.tips-card.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.tips-body { padding: 14px 16px 10px; }
.tips-title { font-size: 12px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.tips-text { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.tips-text kbd {
  display: inline-block; padding: 1px 5px; font-size: 10px; font-family: inherit;
  background: var(--bg-hover); border: 1px solid var(--border); border-radius: 4px;
  color: var(--text-primary); font-weight: 600; vertical-align: 1px;
}
.tips-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-top: 1px solid var(--border-light);
}
.tips-nav button {
  padding: 5px 14px; font-size: 11px; font-weight: 600; border: 1px solid var(--border);
  border-radius: 6px; background: var(--bg-input); color: var(--text-secondary);
  cursor: pointer; transition: all var(--dur-fast); text-decoration: none;
}
.tips-nav button:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.tips-nav button:disabled { opacity: 0.35; cursor: default; }
.tips-nav button:disabled:hover { border-color: var(--border); color: var(--text-secondary); }

/* === Feature Arcs === */


.feature-arc { cursor: grab; transition: opacity var(--dur-fast), filter .15s; }
.feature-arc-hover { opacity: 1 !important; filter: brightness(1.08) drop-shadow(0 0 3px rgba(0,0,0,.1)); }
.leader-line { transition: opacity var(--dur-fast); }
.feature-arc.ring-moved { animation: ringPulse .4s ease-out; }
@keyframes ringPulse {
  0% { filter: brightness(1.3) drop-shadow(0 0 8px var(--accent)); }
  100% { filter: none; }
}
.selection-ring { animation: selectionDash 1.2s linear infinite; }
@keyframes selectionDash { to { stroke-dashoffset: -20; } }
.marker-group { cursor: pointer; transition: filter .15s; }
.marker-hover { filter: brightness(1.1) drop-shadow(0 0 4px rgba(99,102,241,.35)); }

/* === Custom Color Picker Popover === */
#color-picker-popover {
  display: none; position: fixed; z-index: var(--z-loader);
  width: 252px; background: var(--bg-card);
  border-radius: 16px;
  box-shadow: 0 12px 48px rgba(0,0,0,.14), 0 2px 8px rgba(0,0,0,.06), 0 0 0 1px rgba(0,0,0,.04);
  overflow: hidden; opacity: 0; transform: translateY(6px) scale(.95);
  transition: opacity .18s ease, transform .18s ease;
}
#color-picker-popover.open { opacity: 1; transform: translateY(0) scale(1); }

.cp-tabs {
  display: flex; gap: 2px; padding: 6px 8px 0; background: transparent;
}
.cp-tabs button {
  flex: 1; padding: 7px 0; font-size: 11px; font-weight: 600;
  color: var(--text-muted); background: transparent; border: none;
  border-radius: 8px 8px 0 0; cursor: pointer;
  transition: color var(--dur-fast), background .15s;
  letter-spacing: .2px;
}
.cp-tabs button:hover { color: var(--text-primary); background: var(--bg-hover); }
.cp-tabs button.active {
  color: var(--accent); background: var(--bg-card);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.cp-divider { height: 1px; background: var(--border-light); margin: 0; }

.cp-pane { display: none; padding: 12px; max-height: 240px; overflow-y: auto; }
.cp-pane.active { display: flex; flex-wrap: wrap; gap: 6px; align-content: flex-start; }
.cp-pane { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.cp-pane::-webkit-scrollbar { width: 4px; }
.cp-pane::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.cp-pane::-webkit-scrollbar-track { background: transparent; }

.cp-theme-group { width: 100%; margin-bottom: 4px; }
.cp-theme-group:last-child { margin-bottom: 0; }
.cp-theme-name {
  font-size: 10px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .6px;
  margin-bottom: 6px; padding-left: 1px;
}
.cp-theme-swatches { display: flex; flex-wrap: wrap; gap: 6px; }

.cp-swatch {
  width: 24px; height: 24px; border-radius: 6px; cursor: pointer;
  border: 2.5px solid transparent; transition: all var(--dur-fast) ease;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
}
.cp-swatch:hover {
  transform: scale(1.18);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.06), 0 3px 8px rgba(0,0,0,.12);
}
.cp-swatch.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-ring), inset 0 0 0 1px rgba(0,0,0,.06);
  transform: scale(1.08);
}

.cp-empty {
  width: 100%; font-size: 12px; color: var(--text-muted);
  text-align: center; padding: 24px 0;
}

#cp-custom { display: none; flex-direction: column; align-items: stretch; gap: 10px; padding: 14px; flex-wrap: nowrap; }
#cp-custom.active { display: flex; flex-wrap: nowrap; }
.cp-custom-row { display: flex; align-items: stretch; gap: 8px; }
.cp-custom-label { font-size: 11px; font-weight: 600; color: var(--text-secondary); margin-bottom: 2px; }
#cp-native {
  flex: 1; height: 40px; border: 1.5px solid var(--border-light); border-radius: 10px;
  cursor: pointer; padding: 2px; background: var(--bg-input);
}
.cp-apply-btn {
  padding: 8px 18px; font-size: 12px; font-weight: 600;
  background: var(--accent); color: #fff; border: none; border-radius: 10px;
  cursor: pointer; transition: all var(--dur-fast); white-space: nowrap;
}
.cp-apply-btn:hover { background: var(--accent-dark); box-shadow: 0 2px 8px var(--accent-shadow); }
.cp-eyedropper-btn {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; margin-top: 8px; padding: 7px 0; font-size: 12px; font-weight: 500;
  background: var(--bg-input); color: var(--text-secondary); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; transition: all var(--dur-fast);
}
.cp-eyedropper-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--bg-card); }
.cp-eyedropper-btn svg { flex-shrink: 0; }

/* === Rotation reset button === */
.btn-reset-rotation {
  width: 30px; height: 30px; flex-shrink: 0; border: 1.5px solid var(--border-light);
  border-radius: var(--radius-input); background: var(--bg-input); color: var(--text-secondary);
  font-size: 14px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast); padding: 0;
}
.btn-reset-rotation:hover { background: var(--bg-hover); border-color: var(--border-hover); color: var(--accent); }

/* === Linear Map View === */
.linear-svg {
  width: 100%;
  height: auto;
  display: block;
}
#map-container.linear-mode { overflow-y: auto; align-items: flex-start; }
#map-container.linear-mode #plasmid-svg { display: none; }
#map-container.linear-mode .linear-svg { display: block !important; }
#toolbar-view-toggle.active {
  background: var(--accent-bg);
  color: var(--accent);
}

/* === Walkthrough === */
.walkthrough-overlay {
  position: fixed; inset: 0; z-index: var(--z-loader);
  display: none; opacity: 0; transition: opacity var(--dur-normal);
}
.walkthrough-overlay.active { display: block; opacity: 1; }
.walkthrough-mask { position: absolute; inset: 0; }
.walkthrough-tooltip {
  position: fixed; z-index: calc(var(--z-loader) + 1);
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-popover); box-shadow: var(--shadow-popover);
  padding: 18px 20px; max-width: 320px; width: max-content;
  transition: top var(--dur-normal), left var(--dur-normal);
}
.wt-header { display: flex; gap: 12px; align-items: flex-start; }
.wt-icon {
  flex-shrink: 0; width: 36px; height: 36px; display: flex;
  align-items: center; justify-content: center;
  background: var(--accent-bg); color: var(--accent);
  border-radius: 10px; margin-top: 1px;
}
.wt-header-text { flex: 1; min-width: 0; }
.walkthrough-tooltip h3 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin: 0 0 4px; }
.walkthrough-tooltip p { font-size: 12px; color: var(--text-secondary); line-height: 1.55; margin: 0; }
.walkthrough-tooltip p strong { color: var(--text-primary); font-weight: 600; }
.wt-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.wt-dots { display: flex; gap: 6px; }
.wt-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--border); transition: background var(--dur-fast), transform var(--dur-fast);
}
.wt-dot.active { background: var(--accent); transform: scale(1.3); }
.wt-actions { display: flex; gap: 8px; }
.wt-btn-skip { background: none; color: var(--text-muted); font-size: 12px; padding: 6px 12px; border-radius: 6px; }
.wt-btn-skip:hover { color: var(--text-primary); background: var(--bg-hover); }
.wt-btn-next { background: var(--accent); color: #fff; font-size: 12px; padding: 6px 16px; border-radius: 6px; }
.wt-btn-next:hover { background: var(--accent-dark); }

/* === Panel toggle + toolbar overflow (hidden on desktop) === */
.panel-toggle { display: none; }
.panel-overlay { display: none; }
#toolbar-overflow-btn { display: none; }
.toolbar-overflow-menu { display: none; }
.toolbar-overflow-items { display: contents; }

/* === Responsive: tablets and phones === */
@media (max-width: 768px) {
  body { padding: 0; gap: 0; }

  /* --- Panel becomes a slide-out drawer --- */
  #panel {
    position: fixed; inset: 0; right: auto;
    width: 85vw; max-width: 380px; min-width: 0;
    z-index: var(--z-mobile-panel); border-radius: 0;
    transform: translateX(-100%);
    transition: transform var(--dur-normal) ease;
    box-shadow: none;
  }
  #panel.drawer-open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,.18);
  }

  /* Overlay behind drawer */
  .panel-overlay {
    display: none; position: fixed; inset: 0; z-index: var(--z-mobile-overlay);
    background: rgba(0,0,0,.4); backdrop-filter: blur(2px);
    opacity: 0; transition: opacity .25s;
  }
  .panel-overlay.open { display: block; opacity: 1; }

  /* Toggle button */
  .panel-toggle {
    display: flex; align-items: center; justify-content: center;
    position: absolute; top: 12px; left: 12px; z-index: var(--z-toolbar);
    width: 36px; height: 36px; padding: 0; border-radius: 10px;
    background: var(--bg-card); border: 1px solid var(--border-light);
    box-shadow: 0 2px 8px rgba(0,0,0,.08); cursor: pointer;
    color: var(--text-secondary); transition: all var(--dur-fast);
  }
  .panel-toggle:hover { color: var(--accent); }

  /* Map takes full screen */
  #map-container { border-radius: 0; min-height: 100vh; min-height: 100dvh; }

  /* Toolbar: shift right to make room for hamburger */
  #toolbar { left: 56px; }

  /* App loader: hide panel skeleton */
  #app-loader { padding: 0; }
  .loader-panel { display: none; }
  .loader-map { border-radius: 0; }

  /* Hide minimap on mobile */
  #minimap { display: none !important; }

  /* Toolbar overflow menu */
  .toolbar-overflow-items { display: none; }
  #toolbar-overflow-btn { display: flex; }
  .toolbar-overflow-menu {
    position: absolute; top: calc(100% + 6px); right: 0;
    background: var(--bg-card); border: 1px solid var(--border-light);
    border-radius: 10px; box-shadow: var(--shadow-popover);
    padding: 4px; z-index: var(--z-popover-menu); display: none;
    flex-direction: column; gap: 2px; min-width: 160px;
  }
  .toolbar-overflow-menu.open { display: flex; }
  .toolbar-overflow-menu .toolbar-btn {
    width: 100%; height: auto; padding: 8px 10px; border-radius: 6px;
    justify-content: flex-start; gap: 10px; font-size: 12px;
    color: var(--text-secondary);
  }
  .toolbar-overflow-menu .toolbar-btn::after {
    content: attr(title); font-size: 12px; white-space: nowrap;
  }
  .toolbar-overflow-menu .toolbar-btn:hover { background: var(--bg-hover); color: var(--accent); }
  .toolbar-overflow-menu .toolbar-divider { width: 100%; height: 1px; margin: 2px 0; }

  /* Popovers: full-width inside map container */
  #info-popover,
  .stats-popover,
  #theme-popover {
    left: 14px !important; right: 14px !important;
    width: auto !important; max-width: none;
  }
  #export-popover {
    left: 14px; right: 14px; width: auto;
    bottom: 70px;
  }

  /* Modals: clamp width */
  .modal-card { width: calc(100vw - 32px); max-width: 340px; }
  .style-theme-card { width: calc(100vw - 32px); max-width: 440px; }
  .style-theme-grid { grid-template-columns: repeat(2, 1fr); }

  /* RE panel: fill drawer, don't widen */
  #panel.re-expanded { width: 85vw; max-width: 380px; min-width: 0; }
  .re-table { font-size: 11px; }
  .re-td-pos { display: none; }
  .re-table th:nth-child(6) { display: none; }

  /* Export FAB: smaller on mobile */
  #export-fab { padding: 10px 16px; font-size: 12px; bottom: 16px; right: 16px; border-radius: 12px; }

  /* Toast: avoid panel overlap */
  #toast-container { left: 50%; right: auto; }
}

/* === Extra small screens === */
@media (max-width: 480px) {
  #panel { width: 100vw; max-width: none; }
  #panel.re-expanded { width: 100vw; max-width: none; }
  #toolbar { left: 52px; right: 8px; padding: 4px; gap: 1px; }
  .panel-toggle { width: 32px; height: 32px; top: 14px; left: 8px; border-radius: 8px; }
  .toolbar-btn { width: 24px; height: 24px; }
  .toolbar-bp { font-size: 10px; padding: 2px 5px; }
  #export-fab { padding: 8px 14px; font-size: 11px; bottom: 12px; right: 12px; }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}