/**
 * Gödel Terminal — Design Tokens v2.0
 * Award-winning foundation: refined luxury meets industrial precision.
 * "Calm confidence" - a premium trading interface, not a casino.
 */

:root {
  color-scheme: dark;
  /* ========== Colors: Dark Mode (Default) ========== */

  /* Backgrounds - Deep, layered, atmospheric */
  /* Per docs/product/platform/TECHNICAL_SPECS.md (D4: Color Tokens) */
  --bg-primary: #08090C;
  --bg-secondary: #11131A;
  --bg-surface: #0F1117; /* Alias for --surface */
  --bg-elevated: #11131A;
  --surface: #0F1117;
  --bg-hover: rgba(255, 255, 255, 0.03);
  --bg-active: rgba(255, 255, 255, 0.06);

  /* Premium gradient backgrounds */
  --bg-gradient-radial: radial-gradient(ellipse at top, rgba(91, 95, 199, 0.08) 0%, transparent 50%);
  --bg-gradient-subtle: linear-gradient(180deg, rgba(91, 95, 199, 0.03) 0%, transparent 100%);
  --bg-gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
  --bg-noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");

  /* Text - Refined hierarchy */
  --text-primary: #EDEDF2;
  --text-secondary: #A6A7B5;
  --text-tertiary: #737B8E;
  --text-disabled: #3D4455;
  --text-inverse: #08090C;

  /* Borders - Subtle, refined */
  --border: #232634;
  --border-dim: rgba(255, 255, 255, 0.04);
  --border-bright: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(91, 95, 199, 0.3);

  /* Accent: Gödel Indigo - Refined */
  --accent-primary: #5B5FC7;
  --accent-secondary: #8B8FD9;
  --accent-hover: #8B8FD9;
  --accent-pressed: #4347A0;
  --accent-dim: rgba(91, 95, 199, 0.12);
  --accent-glow: rgba(91, 95, 199, 0.4);

  /* Semantic - Refined, muted */
  --success: #2DAA6E;
  --danger: #E05A5A;

  --color-success: var(--success);
  --color-success-dim: rgba(45, 170, 110, 0.12);
  --color-danger: var(--danger);
  --color-danger-dim: rgba(224, 90, 90, 0.12);
  --color-warning: #F59E0B;
  --color-warning-dim: rgba(245, 158, 11, 0.12);
  --color-info: #3B82F6;
  --color-info-dim: rgba(59, 130, 246, 0.12);

  /* Trading: Professional, not casino */
  --color-long: var(--success);
  --color-long-muted: #1F8F5E;
  --color-long-bg: rgba(45, 170, 110, 0.08);
  --color-long-glow: rgba(45, 170, 110, 0.3);
  --color-short: var(--danger);
  --color-short-muted: #C84E4E;
  --color-short-bg: rgba(224, 90, 90, 0.08);
  --color-short-glow: rgba(224, 90, 90, 0.3);

  /* Glass effects */
  --glass-bg: rgba(18, 20, 26, 0.8);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: 12px;

  /* ========== Typography ========== */

  /* Font families - Terminal precision meets geometric clarity */
  --font-display: 'JetBrains Mono', 'SF Mono', ui-monospace, monospace;
  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, monospace;

  /* Scale - Refined */
  --text-2xs: 0.625rem;   /* 10px */
  --text-xs: 0.6875rem;   /* 11px */
  --text-sm: 0.8125rem;   /* 13px */
  --text-base: 0.875rem;  /* 14px */
  --text-lg: 1rem;        /* 16px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 2rem;       /* 32px */
  --text-4xl: 2.5rem;     /* 40px */
  --text-5xl: 3.5rem;     /* 56px */

  /* Line heights */
  --line-height-none: 1;
  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Font weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Letter spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ========== Spacing: 4px base ========== */

  --space-0: 0;
  --space-px: 1px;
  --space-0\.5: 2px;
  --space-1: 4px;
  --space-1\.5: 6px;
  --space-2: 8px;
  --space-2\.5: 10px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;

  /* Semantic spacing */
  --padding-card: var(--space-5);
  --padding-section: var(--space-6);
  --gap-cards: var(--space-4);
  --gap-section: var(--space-8);

  /* ========== Borders & Radius ========== */

  --radius-none: 0;
  --radius-xs: 3px;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-3xl: 24px;
  --radius-full: 9999px;

  /* ========== Shadows - Refined, layered ========== */

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 6px 10px -2px rgba(0, 0, 0, 0.35), 0 3px 6px -2px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.4), 0 4px 8px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.5), 0 8px 16px -4px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

  /* Glow shadows */
  --shadow-glow-accent: 0 0 20px rgba(99, 102, 241, 0.3), 0 0 40px rgba(99, 102, 241, 0.1);
  --shadow-glow-success: 0 0 20px rgba(34, 197, 94, 0.3), 0 0 40px rgba(34, 197, 94, 0.1);
  --shadow-glow-danger: 0 0 20px rgba(239, 68, 68, 0.3), 0 0 40px rgba(239, 68, 68, 0.1);

  /* Inset shadows for depth */
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  --shadow-inset-dark: inset 0 -1px 0 rgba(0, 0, 0, 0.2);

  /* Elevated panel shadow (dropdowns, notifications) */
  --shadow-elevated:
    0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06),
    0 20px 25px -5px rgba(0, 0, 0, 0.2),
    0 0 0 1px var(--border-dim);

  /* ========== Motion - Refined curves ========== */

  --duration-instant: 0ms;
  --duration-faster: 75ms;
  --duration-fast: 100ms;
  --duration-normal: 150ms;
  --duration-slow: 200ms;
  --duration-slower: 300ms;
  --duration-slowest: 500ms;

  /* Premium easing curves */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);

  /* ========== Z-Index Scale ========== */

  --z-deep: -1;
  --z-base: 0;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-popover: 450;
  --z-toast: 500;
  --z-tooltip: 600;

  /* ========== Component-specific tokens ========== */

  /* Cards */
  --card-bg: var(--bg-surface);
  --card-border: var(--border-dim);
  --card-shadow: var(--shadow-sm);
  --card-radius: var(--radius-lg);

  /* Buttons */
  --btn-height-sm: 28px;
  --btn-height: 36px;
  --btn-height-lg: 44px;

  /* Inputs */
  --input-height: 36px;
  --input-bg: var(--bg-primary);
  --input-border: var(--border);

  /* Button backgrounds — darkened for WCAG AA 4.5:1 contrast with white text */
  --btn-success-bg: #167A42;
  --btn-danger-bg: #C04444;

  /* Phosphor amber — for live-ticking data ONLY */
  --phosphor-amber: #F5A623;
  --phosphor-amber-glow: 0 0 6px rgba(245, 166, 35, 0.4), 0 0 12px rgba(245, 166, 35, 0.15);
  --phosphor-amber-text: 0 0 4px rgba(245, 166, 35, 0.3);
  --phosphor-decay: 250ms;

  /* Grid paper — faint background lines */
  --grid-line-color: rgba(255, 255, 255, 0.025);
  --grid-cell-size: 24px;

  /* Terminal rules — decorative dividers */
  --terminal-rule-color: var(--text-tertiary);
}

/* ========== Reduced Motion ========== */

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-faster: 0ms;
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
    --duration-slower: 0ms;
    --duration-slowest: 0ms;
    --phosphor-decay: 0ms;
  }
}

/* ========== Light Mode ========== */

[data-theme="light"] {
  color-scheme: light;
  /* Backgrounds */
  /* Per docs/product/platform/TECHNICAL_SPECS.md (D4: Color Tokens) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F7FA;
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --surface: #FFFFFF;
  --bg-hover: rgba(0, 0, 0, 0.03);
  --bg-active: rgba(0, 0, 0, 0.06);

  /* Premium gradient backgrounds */
  --bg-gradient-radial: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  --bg-gradient-subtle: linear-gradient(180deg, rgba(99, 102, 241, 0.02) 0%, transparent 100%);
  --bg-gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.4) 100%);

  /* Text */
  --text-primary: #111113;
  --text-secondary: #5A5A66;
  --text-tertiary: #697585;
  --text-disabled: #BFC9D1;
  --text-inverse: #FFFFFF;

  /* Borders */
  --border: #E6E6ED;
  --border-dim: rgba(0, 0, 0, 0.05);
  --border-bright: rgba(0, 0, 0, 0.1);
  --border-glow: rgba(99, 102, 241, 0.3);

  /* Accent */
  --accent-primary: #5B5FC7;
  --accent-secondary: #8B8FD9;
  --accent-hover: #8B8FD9;
  --accent-pressed: #4347A0;
  --accent-dim: rgba(91, 95, 199, 0.08);
  --accent-glow: rgba(91, 95, 199, 0.3);

  /* Semantic */
  --success: #14804A;
  --danger: #C62828;

  --color-success: var(--success);
  --color-success-dim: rgba(20, 128, 74, 0.08);
  --color-danger: var(--danger);
  --color-danger-dim: rgba(198, 40, 40, 0.08);
  --color-warning: #D97706;
  --color-warning-dim: rgba(217, 119, 6, 0.08);
  --color-info: #2563EB;
  --color-info-dim: rgba(37, 99, 235, 0.08);

  /* Trading */
  --color-long: var(--success);
  --color-long-muted: #106A3D;
  --color-long-bg: rgba(20, 128, 74, 0.06);
  --color-long-glow: rgba(20, 128, 74, 0.2);
  --color-short: var(--danger);
  --color-short-muted: #8F1F1F;
  --color-short-bg: rgba(198, 40, 40, 0.06);
  --color-short-glow: rgba(198, 40, 40, 0.2);

  /* Glass effects */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-blur: 12px;

  /* Shadows - Softer */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 10px -2px rgba(0, 0, 0, 0.1), 0 3px 6px -2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.12), 0 4px 8px -2px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.15), 0 8px 16px -4px rgba(0, 0, 0, 0.08);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.2);

  /* Glow shadows */
  --shadow-glow-accent: 0 0 20px rgba(79, 70, 229, 0.15), 0 0 40px rgba(79, 70, 229, 0.05);
  --shadow-glow-success: 0 0 20px rgba(22, 163, 74, 0.15), 0 0 40px rgba(22, 163, 74, 0.05);
  --shadow-glow-danger: 0 0 20px rgba(220, 38, 38, 0.15), 0 0 40px rgba(220, 38, 38, 0.05);

  /* Cards */
  --card-bg: var(--bg-surface);
  --card-border: var(--border-dim);
  --card-shadow: var(--shadow);

  /* Button backgrounds — light mode base colors already pass WCAG AA */
  --btn-success-bg: var(--color-success);
  --btn-danger-bg: var(--color-danger);

  /* Phosphor — tinted for light mode */
  --phosphor-amber: #F5A623;
  --phosphor-amber-glow: 0 0 6px rgba(245, 166, 35, 0.4), 0 0 12px rgba(245, 166, 35, 0.15);
  --phosphor-amber-text: 0 0 4px rgba(217, 119, 6, 0.25);
  --phosphor-decay: 250ms;
  --grid-line-color: rgba(0, 0, 0, 0.04);
  --grid-cell-size: 24px;
  --terminal-rule-color: var(--text-tertiary);
}