@tailwind base;
@tailwind components;
@tailwind utilities;

/* ═══════════════════════════════════════════════════════════════════════════
   SYNTENY — DUAL THEME TOKENS
   `:root, [data-theme="dark"]`  = original bioluminescent instrument (unchanged)
   `[data-theme="light"]`        = Apple-style light theme (see apple.md)
   Signal-coded accents:
     accent-cyan   = mint      → sequence tools (BLAST, alignment, primers)
     accent-purple = cool blue → structure & interaction surfaces
     accent-amber  = warm amber→ phylogenetic / enrichment surfaces
   Colors referenced by Tailwind (bg-void, text-primary, ...) are stored as
   RGB TRIPLETS so opacity modifiers keep working in both themes. Always use
   `rgb(var(--x))` / `rgb(var(--x) / alpha)` in plain CSS for triplet tokens.
   ═══════════════════════════════════════════════════════════════════════════ */

:root,
[data-theme="dark"] {
  /* ── Triplet tokens (Tailwind-driven) ──────────────────────────────── */
  --bg-void: 5 6 9;
  --bg-surface-0: 10 11 16;
  --bg-surface-1: 15 16 22;
  --bg-surface-2: 20 22 30;
  --bg-surface-3: 25 27 37;

  --accent-cyan: 74 222 128;      /* mint — sequence tools */
  --accent-hover: 84 232 138;
  --accent-purple: 96 165 250;    /* cool blue — structure & interactions */
  --accent-amber: 251 191 36;     /* warm amber — phylogeny & enrichment */

  --text-primary: 236 240 250;
  --text-secondary: 163 172 188;
  --text-muted: 128 136 152;

  --good: 74 222 128;
  --warn: 251 191 36;
  --info: 96 165 250;
  --error: 248 113 113;

  --molecule-protein: 96 165 250;
  --molecule-dna: 167 139 250;
  --molecule-rna: 251 146 60;
  --interaction-hbond: 96 165 250;
  --interaction-hydrophobic: 251 191 36;
  --interaction-pi: 167 139 250;
  --interaction-salt: 34 211 238;

  --confidence-very-high: 74 222 128;
  --confidence-high: 96 165 250;
  --confidence-moderate: 251 191 36;
  --confidence-low: 148 163 184;

  /* ── Alpha tint variants (decorative / low-stakes fills) ───────────── */
  --accent-cyan-10: rgba(74, 222, 128, 0.10);
  --accent-cyan-20: rgba(74, 222, 128, 0.20);
  --accent-cyan-30: rgba(74, 222, 128, 0.30);
  --accent-purple-10: rgba(96, 165, 250, 0.10);
  --accent-purple-20: rgba(96, 165, 250, 0.20);
  --accent-amber-10: rgba(251, 191, 36, 0.10);
  --accent-amber-20: rgba(251, 191, 36, 0.20);
  --good-dim: rgba(52, 211, 153, 0.15);
  --warn-dim: rgba(251, 191, 36, 0.15);
  --info-dim: rgba(96, 165, 250, 0.15);
  --error-dim: rgba(239, 68, 68, 0.15);

  /* ── Glass / material ──────────────────────────────────────────────── */
  --glass-bg: rgba(15, 16, 22, 0.55);
  --glass-bg-hover: rgba(20, 22, 30, 0.70);
  --glass-border: 148 163 184;
  --glass-border-a: 0.12;
  --glass-border-hover: rgba(148, 163, 184, 0.22);
  --glass-blur: 20px;
  --glass-panel-bg: rgba(10, 11, 16, 0.75);

  /* ── Claymorphism (tactile, low-stakes controls) ───────────────────── */
  --clay-bg: linear-gradient(145deg, #1A1C26 0%, #12141C 100%);
  --clay-bg-hover: linear-gradient(145deg, #1E202A 0%, #14161F 100%);
  --clay-shadow-raised:
    5px 5px 12px rgba(0, 0, 0, 0.5),
    -3px -3px 8px rgba(255, 255, 255, 0.03),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --clay-shadow-pressed:
    3px 3px 8px rgba(0, 0, 0, 0.5),
    -2px -2px 6px rgba(255, 255, 255, 0.02),
    inset 0 2px 6px rgba(0, 0, 0, 0.35);
  --clay-highlight: rgba(255, 255, 255, 0.045);
  --clay-thumb-bg: linear-gradient(145deg, #2A2D3A 0%, #1A1C26 100%);
  --clay-thumb-border: rgba(148, 163, 184, 0.30);
  --clay-thumb-shadow: 0 2px 4px rgba(0, 0, 0, 0.50), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --clay-track-bg: linear-gradient(145deg, #1A1C26 0%, #0D0D1A 100%);
  --clay-track: #1A1C26;
  --clay-track-inset: inset 0 2px 5px rgba(0, 0, 0, 0.45);

  /* ── Liquid glass (hero / nav chrome) ──────────────────────────────── */
  --liquid-bg: linear-gradient(
    120deg,
    rgba(120, 130, 200, 0.10),
    rgba(255, 255, 255, 0.03) 40%,
    rgba(74, 222, 128, 0.04) 60%,
    rgba(120, 130, 200, 0.10)
  );
  --liquid-border: rgba(255, 255, 255, 0.10);
  --liquid-sheen: rgba(255, 255, 255, 0.08);
  --liquid-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    inset -1px -1px 2px rgba(255, 255, 255, 0.02),
    0 8px 32px rgba(0, 0, 0, 0.45);

  /* ── Flat data cards (near-opaque, for scientific output) ──────────── */
  --data-card-bg: rgba(10, 11, 16, 0.96);
  --data-card-border: rgba(148, 163, 184, 0.16);
  --data-card-border-hover: rgba(148, 163, 184, 0.26);
  --data-card-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);

  /* ── Spatial HUD (3D viewer chrome) ────────────────────────────────── */
  --hud-bg: rgba(15, 16, 22, 0.90);
  --hud-border: rgba(148, 163, 184, 0.20);
  --hud-shadow: 0 2px 12px rgba(0, 0, 0, 0.50);
  --hud-legend-bg: rgba(10, 11, 16, 0.94);
  --hud-legend-border: rgba(148, 163, 184, 0.20);
  --hud-legend-shadow: 0 2px 10px rgba(0, 0, 0, 0.55);

  /* ── 3D / canvas scenes + HUD chips (Phase 2) ──────────────────────── */
  --viewer-bg: 11 12 20;         /* scene/canvas background (triplet)  */
  --hud-chip-bg: 15 16 22;       /* floating HUD chip bg (triplet)     */
  --hud-chip-text: 255 255 255;  /* HUD chip text (triplet)            */
  --hud-chip-line: 255 255 255;  /* HUD chip border (triplet)          */
  --scrim: rgba(5, 6, 9, 0.80);
  --cursor-glow: radial-gradient(circle, rgba(74, 222, 128, 0.06), transparent 60%);
  --shadow-float: 0 4px 16px rgba(0, 0, 0, 0.50);
  --shadow-float-sm: 0 2px 8px rgba(0, 0, 0, 0.45);

  /* ── Chart tooltips (Recharts contentStyle) ───────────────────────── */
  --chart-tooltip-bg: #10141C;
  --chart-tooltip-border: rgba(255, 255, 255, 0.12);
  --chart-tooltip-label: #94A3B8;
  --chart-tooltip-item: #E2E8F0;

  /* ── Micro-render colors ───────────────────────────────────────────── */
  --ss-coil: rgba(255, 255, 255, 0.15);   /* secondary-structure coil  */
  --tree-canvas: #07080C;                  /* phylo SVG background      */
  --tree-selected: #FFFFFF;                /* selected-node stroke      */
  --tree-label: #94A3B8;                   /* phylo leaf-label default  */

  /* ── Critical / solid / ghost actions ──────────────────────────────── */
  --cta-bg: linear-gradient(180deg, #4ADE80 0%, #22C55E 100%);
  --cta-bg-hover: linear-gradient(180deg, #5CF08F 0%, #2CC96D 100%);
  --cta-color: rgb(6 6 11);
  --cta-border: rgba(255, 255, 255, 0.16);
  --cta-shadow: 0 2px 0 rgba(0, 0, 0, 0.30), 0 6px 16px rgba(0, 0, 0, 0.40);
  --cta-shadow-hover: 0 3px 0 rgba(0, 0, 0, 0.30), 0 8px 20px rgba(0, 0, 0, 0.45);
  --cta-shadow-active: 0 1px 0 rgba(0, 0, 0, 0.30);
  --cta-danger-bg: linear-gradient(180deg, #F87171 0%, #DC2626 100%);
  --cta-danger-bg-hover: linear-gradient(180deg, #FB8888 0%, #EF4444 100%);
  --btn-solid-bg: rgb(var(--accent-cyan));
  --btn-solid-bg-hover: rgb(var(--accent-hover));
  --btn-solid-color: rgb(var(--bg-void));
  --btn-solid-shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 8px 20px rgba(74, 222, 128, 0.12);
  --btn-solid-shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.35), 0 12px 28px rgba(74, 222, 128, 0.18);

  /* ── Elevation shadows (used via Tailwind `shadow-*`) ──────────────── */
  --shadow-glow-cyan: 0 1px 2px rgba(0, 0, 0, 0.35), 0 10px 28px rgba(74, 222, 128, 0.07);
  --shadow-glow-purple: 0 1px 2px rgba(0, 0, 0, 0.35), 0 10px 28px rgba(167, 139, 250, 0.07);
  --shadow-glow-amber: 0 1px 2px rgba(0, 0, 0, 0.35), 0 10px 24px rgba(251, 191, 36, 0.07);
  --shadow-glass-sm: 0 2px 16px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --shadow-glass-md: 0 4px 32px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --shadow-glass-lg: 0 8px 48px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --shadow-glass-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --shadow-clay: var(--clay-shadow-raised);
  --shadow-clay-press: var(--clay-shadow-pressed);
  --shadow-critical: 0 2px 0 rgba(0, 0, 0, 0.3), 0 6px 16px rgba(0, 0, 0, 0.4);
  --shadow-data-card: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-nav-active: inset 2px 0 0 rgb(var(--accent-cyan));

  /* ── Chrome accents ────────────────────────────────────────────────── */
  --scanline-color: rgb(var(--accent-cyan));
  --pipeline-color: rgba(74, 222, 128, 0.55);
  --grid-color: rgba(100, 110, 255, 0.06);
  --dots-color: rgba(100, 110, 255, 0.15);
  --glow-accent-shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 10px 28px rgba(74, 222, 128, 0.10);
  --vignette-mid: rgba(5, 6, 9, 0.6);
  --vignette-edge: rgba(5, 6, 9, 0.97);
  --scroll-track: rgb(var(--bg-surface-0));
  --scroll-thumb: rgb(var(--glass-border) / var(--glass-border-a));

  /* ── Motion tiers ──────────────────────────────────────────────────── */
  --motion-micro: 120ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --motion-fast: 150ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --motion-standard: 250ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --motion-deliberate: 450ms cubic-bezier(0.25, 1, 0.5, 1);

  --transition-micro: var(--motion-micro);
  --transition-fast: var(--motion-fast);
  --transition-default: var(--motion-standard);
  --transition-slow: var(--motion-deliberate);
}

[data-theme="light"] {
  /* ── Triplet tokens ────────────────────────────────────────────────── */
  --bg-void: 246 247 250;        /* #F6F7FA Apple system gray canvas */
  --bg-surface-0: 255 255 255;   /* #FFFFFF cards, modals */
  --bg-surface-1: 246 247 250;   /* #F6F7FA recessed sections */
  --bg-surface-2: 235 237 242;   /* #EBEDF2 nested panels */
  --bg-surface-3: 227 229 235;   /* #E3E5EB pressed states */

  --accent-cyan: 21 128 61;     /* mint CTA green-700 (AA on white) */
  --accent-hover: 16 101 52;    /* #12A193 hover */
  --accent-purple: 37 99 235;   /* cool blue #2563EB */
  --accent-amber: 180 83 9;      /* #B45309 */

  --text-primary: 29 29 31;      /* #1D1D1F 16.1:1 AAA */
  --text-secondary: 110 110 115; /* #6E6E73 5.4:1 AA */
  --text-muted: 134 134 139;     /* #86868B 3.9:1 — labels/captions only */

  --good: 4 120 87;              /* #047857 */
  --warn: 180 83 9;              /* #B45309 */
  --info: 37 99 235;             /* #2563EB */
  --error: 220 38 38;            /* #DC2626 */

  --molecule-protein: 37 99 235;
  --molecule-dna: 91 100 176;
  --molecule-rna: 234 88 12;
  --interaction-hbond: 37 99 235;
  --interaction-hydrophobic: 180 83 9;
  --interaction-pi: 124 58 237;
  --interaction-salt: 8 145 178;

  --confidence-very-high: 21 128 61;
  --confidence-high: 37 99 235;
  --confidence-moderate: 217 119 6;
  --confidence-low: 142 142 147;

  /* ── Alpha tint variants (re-based on CTA green-700 for light visibility) ── */
  --accent-cyan-10: rgba(21, 128, 61, 0.08);
  --accent-cyan-20: rgba(21, 128, 61, 0.16);
  --accent-cyan-30: rgba(21, 128, 61, 0.24);
  --accent-purple-10: rgba(37, 99, 235, 0.10);
  --accent-purple-20: rgba(37, 99, 235, 0.18);
  --accent-amber-10: rgba(180, 83, 9, 0.10);
  --accent-amber-20: rgba(180, 83, 9, 0.18);
  --good-dim: rgba(4, 120, 87, 0.12);
  --warn-dim: rgba(180, 83, 9, 0.12);
  --info-dim: rgba(37, 99, 235, 0.12);
  --error-dim: rgba(220, 38, 38, 0.12);

  /* ── Glass / material ──────────────────────────────────────────────── */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-bg-hover: rgba(255, 255, 255, 0.82);
  --glass-border: 0 0 0;
  --glass-border-a: 0.10;
  --glass-border-hover: rgba(0, 0, 0, 0.18);
  --glass-blur: 20px;
  --glass-panel-bg: rgba(255, 255, 255, 0.75);

  /* ── Claymorphism → light dual-source neumorphism ──────────────────── */
  --clay-bg: linear-gradient(145deg, #FFFFFF 0%, #F6F7FA 100%);
  --clay-bg-hover: linear-gradient(145deg, #FFFFFF 0%, #EBEDF2 100%);
  --clay-shadow-raised:
    6px 6px 14px rgba(0, 0, 0, 0.08),
    -6px -6px 12px rgba(255, 255, 255, 0.95),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --clay-shadow-pressed:
    2px 2px 6px rgba(0, 0, 0, 0.06),
    -1px -1px 4px rgba(255, 255, 255, 0.7),
    inset 0 2px 6px rgba(0, 0, 0, 0.06);
  --clay-highlight: rgba(255, 255, 255, 0.9);
  --clay-thumb-bg: linear-gradient(145deg, #FFFFFF 0%, #F6F7FA 100%);
  --clay-thumb-border: rgba(0, 0, 0, 0.15);
  --clay-thumb-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --clay-track-bg: linear-gradient(145deg, #E3E5EB 0%, #F6F7FA 100%);
  --clay-track: #E3E5EB;
  --clay-track-inset: inset 0 1px 3px rgba(0, 0, 0, 0.10);

  /* ── Liquid glass (frosted, hairline-backed) ───────────────────────── */
  --liquid-bg: linear-gradient(
    120deg,
    rgba(21, 128, 61, 0.05),
    rgba(255, 255, 255, 0.4) 40%,
    rgba(21, 128, 61, 0.03) 60%,
    rgba(21, 128, 61, 0.05)
  );
  --liquid-border: rgba(0, 0, 0, 0.08);
  --liquid-sheen: rgba(255, 255, 255, 0.55);
  --liquid-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 8px 24px rgba(0, 0, 0, 0.06);

  /* ── Flat data cards ───────────────────────────────────────────────── */
  --data-card-bg: #FFFFFF;
  --data-card-border: rgba(0, 0, 0, 0.08);
  --data-card-border-hover: rgba(0, 0, 0, 0.16);
  --data-card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);

  /* ── Spatial HUD ───────────────────────────────────────────────────── */
  --hud-bg: rgba(255, 255, 255, 0.88);
  --hud-border: rgba(0, 0, 0, 0.12);
  --hud-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
  --hud-legend-bg: rgba(255, 255, 255, 0.94);
  --hud-legend-border: rgba(0, 0, 0, 0.12);
  --hud-legend-shadow: 0 2px 10px rgba(0, 0, 0, 0.10);

  /* ── 3D / canvas scenes + HUD chips (Phase 2) ──────────────────────── */
  --viewer-bg: 246 247 250;      /* light scene/canvas background      */
  --hud-chip-bg: 255 255 255;    /* HUD chip bg (triplet)              */
  --hud-chip-text: 29 29 31;     /* HUD chip text (triplet)            */
  --hud-chip-line: 0 0 0;        /* HUD chip border (triplet)          */
  --scrim: rgba(30, 30, 32, 0.45);
  --cursor-glow: radial-gradient(circle, rgba(21, 128, 61, 0.09), transparent 60%);
  --shadow-float: 0 4px 16px rgba(0, 0, 0, 0.14);
  --shadow-float-sm: 0 2px 8px rgba(0, 0, 0, 0.12);

  /* ── Chart tooltips (Recharts contentStyle) ───────────────────────── */
  --chart-tooltip-bg: #FFFFFF;
  --chart-tooltip-border: rgba(0, 0, 0, 0.12);
  --chart-tooltip-label: #6E6E73;
  --chart-tooltip-item: #1D1D1F;

  /* ── Micro-render colors ───────────────────────────────────────────── */
  --ss-coil: rgba(0, 0, 0, 0.12);
  --tree-canvas: #FFFFFF;
  --tree-selected: #15803D;
  --tree-label: #86868B;

  /* ── Critical / solid / ghost actions ──────────────────────────────── */
  --cta-bg: #15803D;
  --cta-bg-hover: #166534;
  --cta-color: rgb(255 255 255);
  --cta-border: rgba(255, 255, 255, 0.25);
  --cta-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(21, 128, 61, 0.22);
  --cta-shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.12), 0 12px 28px rgba(21, 128, 61, 0.28);
  --cta-shadow-active: 0 1px 0 rgba(0, 0, 0, 0.15);
  --cta-danger-bg: #DC2626;
  --cta-danger-bg-hover: #B91C1C;
  --btn-solid-bg: rgb(var(--accent-cyan));
  --btn-solid-bg-hover: rgb(var(--accent-hover));
  --btn-solid-color: #FFFFFF;
  --btn-solid-shadow: 0 1px 2px rgba(0, 0, 0, 0.10), 0 8px 20px rgba(21, 128, 61, 0.16);
  --btn-solid-shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.10), 0 12px 28px rgba(21, 128, 61, 0.22);

  /* ── Elevation shadows ─────────────────────────────────────────────── */
  --shadow-glow-cyan: 0 1px 2px rgba(0, 0, 0, 0.08), 0 10px 28px rgba(21, 128, 61, 0.10);
  --shadow-glow-purple: 0 1px 2px rgba(0, 0, 0, 0.08), 0 10px 28px rgba(91, 33, 182, 0.10);
  --shadow-glow-amber: 0 1px 2px rgba(0, 0, 0, 0.08), 0 10px 24px rgba(180, 83, 9, 0.10);
  --shadow-glass-sm: 0 2px 16px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --shadow-glass-md: 0 4px 24px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --shadow-glass-lg: 0 8px 40px rgba(0, 0, 0, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --shadow-glass-card-hover: 0 8px 32px rgba(0, 0, 0, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --shadow-clay: var(--clay-shadow-raised);
  --shadow-clay-press: var(--clay-shadow-pressed);
  --shadow-critical: 0 1px 2px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(21, 128, 61, 0.20);
  --shadow-data-card: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-nav-active: inset 2px 0 0 rgb(var(--accent-cyan));

  /* ── Chrome accents ────────────────────────────────────────────────── */
  --scanline-color: rgb(var(--accent-cyan));
  --pipeline-color: rgba(21, 128, 61, 0.40);
  --grid-color: rgba(0, 0, 0, 0.04);
  --dots-color: rgba(0, 0, 0, 0.08);
  --glow-accent-shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 10px 28px rgba(21, 128, 61, 0.12);
  --vignette-mid: rgba(245, 245, 247, 0.5);
  --vignette-edge: rgba(245, 245, 247, 0.95);
  --scroll-track: rgb(var(--bg-surface-0));
  --scroll-thumb: rgb(var(--glass-border) / var(--glass-border-a));
}

@layer base {
  html {
    scroll-behavior: smooth;
    text-rendering: optimizeLegibility;
    -webkit-text-size-adjust: 100%;
  }

  body {
    background-color: rgb(var(--bg-void));
    color: rgb(var(--text-primary));
    font-family: var(--font-geist-sans), system-ui, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-geist-sans), system-ui, sans-serif;
    font-weight: 600;
    color: rgb(var(--text-primary));
    /* Tracking/leading are size-specific (apple-design §15): applied per size
       via utilities (tracking-tight on display type, 0/positive on small).
       No blanket letter-spacing here — one value for all sizes is the anti-pattern. */
  }

  input, textarea, select {
    background-color: rgb(var(--bg-surface-1));
    color: rgb(var(--text-primary));
    border-color: rgb(var(--glass-border) / var(--glass-border-a));
  }

  input::placeholder, textarea::placeholder {
    color: rgb(var(--text-muted));
    opacity: 0.85;
  }

  code, pre, kbd, samp {
    font-family: var(--font-geist-mono), ui-monospace, monospace;
  }

  ::-webkit-scrollbar       { width: 4px; height: 4px; }
  ::-webkit-scrollbar-track { background: var(--scroll-track); }
  ::-webkit-scrollbar-thumb {
    background: var(--scroll-thumb);
    border-radius: 2px;
    transition: background var(--transition-default);
  }
  ::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan-30);
  }

  ::selection {
    background: var(--accent-cyan-20);
    color: rgb(var(--text-primary));
  }

  :focus-visible {
    outline: 1.5px solid rgb(var(--accent-cyan));
    outline-offset: 3px;
    border-radius: 4px;
  }
}

@layer components {
  .glass {
    background: var(--glass-bg);
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition:
      background var(--transition-default),
      border-color var(--transition-default),
      box-shadow var(--transition-default);
  }

  .glass:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
  }

  .glass-card {
    background: var(--glass-bg);
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: 1rem;
    transition:
      background var(--transition-default),
      border-color var(--transition-default),
      box-shadow var(--transition-slow),
      transform var(--transition-slow);
  }

  .glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-glass-card-hover);
  }

  .glass-panel {
    background: var(--glass-panel-bg);
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    backdrop-filter: blur(32px) saturate(180%);
    -webkit-backdrop-filter: blur(32px) saturate(180%);
  }

  /* App-shell frosted chrome + modal scrims (theme-driven) */
  .glass-sidebar {
    background: var(--glass-panel-bg);
    border-right: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
  }

  .glass-header {
    background: var(--glass-panel-bg);
    border-bottom: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .scrim {
    background: var(--scrim);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  /* ── Claymorphism — discrete, tactile, pressable objects ─────────────
     Use ONLY for isolated low-stakes choices (toggles, sliders, mode
     pickers). Never for data, charts, or irreversible/expensive actions.
     ──────────────────────────────────────────────────────────────────── */
  .clay {
    background: var(--clay-bg);
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    border-radius: 0.75rem;
    box-shadow: var(--clay-shadow-raised);
    transition:
      transform var(--transition-fast),
      box-shadow var(--transition-fast),
      background var(--transition-fast);
  }

  .clay:hover {
    background: var(--clay-bg-hover);
  }

  .clay:active {
    transform: translateY(1px);
    box-shadow: var(--clay-shadow-pressed);
  }

  .clay-toggle-track {
    background: var(--clay-track-bg);
    border: 1px solid rgb(var(--glass-border) / calc(var(--glass-border-a) * 1.6));
    box-shadow: var(--clay-track-inset);
    transition: background var(--transition-fast);
  }

  .clay-toggle-thumb {
    background: var(--clay-thumb-bg);
    border: 1px solid var(--clay-thumb-border);
    box-shadow: var(--clay-thumb-shadow);
  }

  .clay-slider {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    border-radius: 9999px;
    background:
      linear-gradient(90deg, rgb(var(--accent-cyan)) 0%, rgb(var(--accent-cyan)) var(--fill, 50%),
        var(--clay-track) var(--fill, 50%), var(--clay-track) 100%);
    box-shadow: var(--clay-track-inset);
    outline: none;
  }

  .clay-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--clay-thumb-bg);
    border: 1px solid var(--clay-thumb-border);
    box-shadow: var(--clay-thumb-shadow);
    cursor: grab;
    transition: box-shadow var(--transition-fast);
  }

  .clay-slider::-webkit-slider-thumb:active {
    cursor: grabbing;
    box-shadow: var(--clay-shadow-pressed);
  }

  .clay-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--clay-thumb-bg);
    border: 1px solid var(--clay-thumb-border);
    box-shadow: var(--clay-thumb-shadow);
    cursor: grab;
  }

  /* ── Liquid glass — premium, alive chrome (hero / nav) ──────────────
     Expensive to render; reserve for the "wow" surfaces only. Never use
     over data that must be read precisely. ──────────────────────────── */
  .liquid-glass {
    position: relative;
    overflow: hidden;
    background: var(--liquid-bg);
    border: 1px solid var(--liquid-border);
    border-radius: 1rem;
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    box-shadow: var(--liquid-shadow);
  }

  .liquid-glass::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 20%, var(--liquid-sheen) 50%, transparent 80%);
    transform: translateX(-100%);
    animation: liquid-sheen 7s ease-in-out infinite;
    pointer-events: none;
  }

  @keyframes liquid-sheen {
    0%, 55% { transform: translateX(-100%); }
    100%     { transform: translateX(100%); }
  }

  /* ── Flat data cards — opaque, high-contrast, zero blur ─────────────
     For charts, trees, scores, structures data-ink. Translucency behind
     data reduces contrast and reads as decoration. ──────────────────── */
  .data-card {
    background: var(--data-card-bg);
    border: 1px solid var(--data-card-border);
    border-radius: 0.875rem;
    box-shadow: var(--data-card-shadow);
    transition: border-color var(--transition-default);
  }

  .data-card:hover {
    border-color: var(--data-card-border-hover);
  }

  /* ── Spatial HUD — chrome that lives in the viewer's space ────────── */
  .hud {
    background: var(--hud-bg);
    border: 1px solid var(--hud-border);
    border-radius: 0.75rem;
    box-shadow: var(--hud-shadow);
  }

  .hud-legend {
    background: var(--hud-legend-bg);
    border: 1px solid var(--hud-legend-border);
    border-radius: 0.5rem;
    box-shadow: var(--hud-legend-shadow);
  }

  /* ── Critical actions — solid, deliberate, not casually clickable ─── */
  .btn-critical {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: 0.625rem;
    background: var(--cta-bg);
    color: var(--cta-color);
    font-family: var(--font-geist-sans), system-ui, sans-serif;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.01em;
    border: 1px solid var(--cta-border);
    box-shadow: var(--cta-shadow);
    transition:
      background var(--transition-fast),
      transform var(--transition-fast),
      box-shadow var(--transition-fast);
  }

  .btn-critical:hover:not(:disabled) {
    background: var(--cta-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--cta-shadow-hover);
  }

  .btn-critical:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: var(--cta-shadow-active);
  }

  .btn-critical:disabled {
    opacity: 0.45;
    cursor: not-allowed;
  }

  .btn-critical-danger {
    background: var(--cta-danger-bg);
    color: #fff;
  }

  .btn-critical-danger:hover:not(:disabled) {
    background: var(--cta-danger-bg-hover);
  }

  /* ── Flat data-entry inputs — neutral, precision over decoration ──── */
  .input-flat {
    width: 100%;
    padding: 0.65rem 0.875rem;
    background: rgb(var(--bg-surface-1));
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    border-radius: 0.5rem;
    color: rgb(var(--text-primary));
    font-size: 0.875rem;
    outline: none;
    transition:
      border-color var(--transition-fast),
      box-shadow var(--transition-fast);
  }

  .input-flat::placeholder {
    color: rgb(var(--text-muted));
    opacity: 0.7;
  }

  .input-flat:focus {
    border-color: var(--accent-cyan-30);
    box-shadow: 0 0 0 2px var(--accent-cyan-10);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: 0.625rem;
    background: var(--btn-solid-bg);
    color: var(--btn-solid-color);
    font-family: var(--font-geist-sans), system-ui, sans-serif;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.01em;
    transition:
      background var(--transition-fast),
      box-shadow var(--transition-default),
      transform var(--transition-fast);
    box-shadow: var(--btn-solid-shadow);
  }

  .btn-primary:hover {
    background: var(--btn-solid-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--btn-solid-shadow-hover);
  }

  .btn-primary:active {
    transform: translateY(0) scale(0.98);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.625rem;
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    color: rgb(var(--text-secondary));
    font-size: 0.875rem;
    transition:
      border-color var(--transition-fast),
      color var(--transition-fast),
      background var(--transition-fast),
      transform var(--transition-micro);
  }

  .btn-ghost:hover {
    border-color: var(--accent-cyan-30);
    color: rgb(var(--accent-cyan));
    background: var(--accent-cyan-10);
    transform: translateY(-1px);
  }

  .btn-ghost:active {
    transform: translateY(0) scale(0.98);
  }

  .input-glass {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: rgb(var(--bg-surface-1));
    border: 1px solid rgb(var(--glass-border) / var(--glass-border-a));
    border-radius: 0.625rem;
    color: rgb(var(--text-primary));
    font-family: var(--font-geist-sans), system-ui, sans-serif;
    font-size: 0.875rem;
    transition:
      border-color var(--transition-fast),
      box-shadow var(--transition-fast);
    outline: none;
  }

  .input-glass::placeholder {
    color: rgb(var(--text-muted));
  }

  .input-glass:focus {
    border-color: var(--accent-cyan-30);
    box-shadow: 0 0 0 3px var(--accent-cyan-10);
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: 0.75rem;
    color: rgb(var(--text-muted));
    font-size: 0.875rem;
    font-weight: 500;
    transition:
      color var(--transition-fast),
      background var(--transition-fast);
    position: relative;
  }

  .nav-item:hover {
    color: rgb(var(--text-primary));
    background: var(--glass-bg);
  }

  .nav-item.active {
    color: rgb(var(--accent-cyan));
    background: var(--accent-cyan-10);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.65rem;
    font-family: var(--font-geist-mono), ui-monospace, monospace;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .badge-cyan {
    background: var(--accent-cyan-10);
    border: 1px solid var(--accent-cyan-20);
    color: rgb(var(--accent-cyan));
  }

  .badge-purple {
    background: var(--accent-purple-10);
    border: 1px solid var(--accent-purple-20);
    color: rgb(var(--accent-purple));
  }

  .divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgb(var(--glass-border) / var(--glass-border-a)), transparent);
  }
}

@layer utilities {
  .bg-grid {
    background-image:
      linear-gradient(var(--grid-color) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 48px 48px;
  }

  .bg-dots {
    background-image: radial-gradient(var(--dots-color) 1px, transparent 1px);
    background-size: 24px 24px;
  }

  .bg-vignette {
    background: radial-gradient(
      ellipse 80% 80% at 50% 50%,
      transparent 20%,
      var(--vignette-mid) 65%,
      var(--vignette-edge) 100%
    );
  }

  .glow-accent {
    box-shadow: var(--glow-accent-shadow);
  }

  .scan-line {
    position: relative;
    overflow: hidden;
  }

  .scan-line::after {
    content: '';
    position: absolute;
    inset-inline: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--scanline-color), transparent);
    opacity: 0.6;
    animation: scan 2.5s ease-in-out infinite;
    pointer-events: none;
  }

  .noise {
    position: relative;
  }

  .noise::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    z-index: 0;
  }

  .canvas-host {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
  }

  /* ── Landing: database marquee ──────────────────────────────────── */
  .marquee-mask {
    position: relative;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, black 12%, black 88%, transparent);
    mask-image: linear-gradient(90deg, transparent, black 12%, black 88%, transparent);
  }

  .marquee-track {
    display: flex;
    width: max-content;
    animation: marquee 32s linear infinite;
  }

  .marquee-track:hover {
    animation-play-state: paused;
  }

  /* ── Landing: animated pipeline connector ───────────────────────── */
  .pipeline-line {
    background: linear-gradient(90deg, transparent, var(--pipeline-color), transparent);
    background-size: 200% 100%;
    animation: pipeline-flow 2.5s linear infinite;
  }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes pipeline-flow {
  0%   { background-position: 200% 0; }
  100% { background-position: 0 0; }
}

/* Smooth cross-fade when toggling themes (avoid abrupt brightness jump).
   Applied transiently by the ThemeProvider during a switch. */
.theme-switching,
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
  transition-property: background-color, border-color, color, fill, stroke, box-shadow !important;
  transition-duration: 220ms !important;
}

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

/* Frost the glass under reduced transparency: solid fills, no blur
   (apple-design §14). */
@media (prefers-reduced-transparency: reduce) {
  .glass,
  .glass-card,
  .glass-panel,
  .glass-sidebar,
  .glass-header,
  .liquid-glass,
  .scrim {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .glass,
  .glass-card,
  .glass-panel,
  .glass-sidebar,
  .glass-header,
  .liquid-glass {
    background: rgb(var(--bg-surface-1));
  }
  .glass:hover,
  .glass-card:hover {
    background: rgb(var(--bg-surface-1));
  }
}

/* High contrast: near-solid backgrounds with a defined contrasting border
   (apple-design §14). */
@media (prefers-contrast: more) {
  .glass,
  .glass-card,
  .glass-panel,
  .glass-sidebar,
  .glass-header,
  .liquid-glass,
  .data-card {
    border: 1px solid rgb(var(--text-primary) / 0.45);
  }
}