/* ─────────────────────────────────────────────────────────────────────────
 * design-systems/replicate/tokens.css
 *
 * Structured token bindings for "Design System Inspired by Replicate".
 * Developer playground: explosive gradient energy, pill-shaped geometry,
 * massive display typography, high-contrast black/white + red brand.
 *
 * Key brand decisions encoded here:
 *   - Pure white body canvas with Replicate Dark (#202020) for text/borders
 *   - Replicate Red (#ea2804) — brand accent for gradients and accent borders
 *   - EVERYTHING is pill-shaped (9999px) — the absolute design commitment
 *   - rb-freigeist-neue at weight 700 for display — thundering headlines
 *   - basier-square at weight 400 for body — quiet counterpart to heavy display
 *   - Links use dotted underline (#bbbbbb) — developer notebook aesthetic
 *   - Depth via borders and background color, not shadows
 * ─────────────────────────────────────────────────────────────────── */

:root {
  /* ─── Surface ─────────────────────────────────────────────────────
   * Pure white body. The hero gradient section provides its own
   * background — no warm canvas tinting. */
  --bg: #ffffff;
  --surface: #f8f8f8;        /* Subtle gray for alternate sections */
  --surface-warm: var(--surface); /* no warm tier */

  /* ─── Foreground ──────────────────────────────────────────────────
   * Replicate Dark (#202020) — warmer than pure black, the anchor
   * for all text and borders. */
  --fg: #202020;             /* Replicate Dark */
  --fg-2: #4e4e4e;           /* Warm Gray — emphasized secondary */
  --muted: #646464;          /* Medium Gray — secondary body text */
  --meta: #8d8d8d;           /* Mid Silver — tertiary, footnotes */

  /* ─── Border ──────────────────────────────────────────────────────
   * The primary containment mechanism. Replicate uses heavy dark
   * borders (1px solid #202020) rather than shadows. */
  --border: #202020;         /* Dark border — primary card/button containment */
  --border-soft: #e5e5e5;    /* Lighter — inner dividers, less prominent */

  /* ─── Accent ──────────────────────────────────────────────────────
   * Replicate Red — used for gradients and accent borders.
   * NOT used as a surface fill — it's for the hero gradient and highlights. */
  --accent: #ea2804;
  --accent-on: #ffffff;
  --accent-hover: color-mix(in oklab, var(--accent), black 8%);
  --accent-active: color-mix(in oklab, var(--accent), black 16%);

  /* ─── Semantic ────────────────────────────────────────────────────
   * Status Green is the Replicate brand green for operational badges.
   * Replaces the default success color to reinforce the community vibe. */
  --success: #2b9a66;        /* Status Green — "running" and operational badges */
  --warn: #eab308;
  --danger: #dc2626;

  /* ─── Typography ──────────────────────────────────────────────────
   * Two-voice system: heavy display (rb-freigeist-neue 700) vs
   * quiet body (basier-square 400). The contrast is extreme and intentional.
   * JetBrains Mono for all code — primary content for developers. */
  --font-display: "rb-freigeist-neue", ui-sans-serif, system-ui, sans-serif;
  --font-body: "basier-square", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "jetbrains-mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Type scale — DESIGN.md §3. 128px manifesto, 72px hero, 48px section.
   * "128px is a real size" — the design equivalent of shouting from a rooftop. */
  --text-xs: 12px;           /* Tag — lowercase transform */
  --text-sm: 14px;           /* Code Small / Caption */
  --text-base: 16px;         /* Body / Button */
  --text-lg: 18px;           /* Body Large */
  --text-xl: 30px;           /* Sub-heading */
  --text-2xl: 48px;          /* Section Heading */
  --text-3xl: 72px;          /* Display / Hero */
  --text-4xl: 128px;         /* Display Mega — closing manifesto */

  --leading-body: 1.5;
  --leading-tight: 1.0;      /* Tight at all display sizes */
  --tracking-display: -0.025em; /* ≈ -1.8px at 72px — dense hero text */

  /* ─── Spacing ─────────────────────────────────────────────────────
   * Very generous section spacing (96–192px). Dense within galleries. */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  --section-y-desktop: 96px; /* Bold and generous — distinct content zones */
  --section-y-tablet: 64px;
  --section-y-phone: 48px;

  /* ─── Radius ──────────────────────────────────────────────────────
   * EVERYTHING is pill-shaped (9999px). This is the most extreme pill
   * commitment in any major tech brand. All four tiers collapse to pill.
   * The only acceptable alternative is the hero gradient section itself. */
  --radius-sm: 9999px;       /* Even small elements are pill-shaped */
  --radius-md: 9999px;       /* All cards, containers — pill */
  --radius-lg: 9999px;       /* All featured containers — still pill */
  --radius-pill: 9999px;     /* Explicit pill */

  /* ─── Elevation ───────────────────────────────────────────────────
   * No drop shadows — depth comes from borders and background color.
   * The --elev-raised uses the accent border to highlight featured items. */
  --elev-flat: none;
  --elev-ring: 0 0 0 1px var(--border);
  --elev-raised: 0 0 0 1px var(--accent); /* Accent border ring for featured items */

  /* ─── Focus ring ──────────────────────────────────────────────────
   * Orange-red tinted focus — consistent with the brand energy. */
  --focus-ring: 0 0 0 3px color-mix(in oklab, var(--accent), transparent 70%);

  /* ─── Motion ──────────────────────────────────────────────────────
   * Developer energy: snappy transitions, no decoration. */
  --motion-fast: 120ms;
  --motion-base: 200ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);

  /* ─── Layout ──────────────────────────────────────────────────────
   * Fluid width, responsive grid. Hero full-width gradient. */
  --container-max: 1200px;
  --container-gutter-desktop: 24px;
  --container-gutter-tablet: 16px;
  --container-gutter-phone: 12px;
}
