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

/*
 * Theme tokens — RNR template (verbatim) + Multica custom tokens appended.
 *
 * When changing any variable here, also update apps/mobile/lib/theme.ts —
 * they mirror each other. See apps/mobile/docs/rnr-migration.md §5.
 *
 * Dark-mode values for the Multica custom tokens currently mirror their
 * light values — they will be tuned when a screen using them actually
 * needs dark-mode treatment. Don't pre-author (per §3.1 "defaults first").
 */

@layer base {
  :root {
    --background: 0 0% 100%;
    --foreground: 0 0% 3.9%;
    --card: 0 0% 100%;
    --card-foreground: 0 0% 3.9%;
    --popover: 0 0% 100%;
    --popover-foreground: 0 0% 3.9%;
    --primary: 0 0% 9%;
    --primary-foreground: 0 0% 98%;
    --secondary: 0 0% 96.1%;
    --secondary-foreground: 0 0% 9%;
    --muted: 0 0% 96.1%;
    --muted-foreground: 0 0% 45.1%;
    --accent: 0 0% 96.1%;
    --accent-foreground: 0 0% 9%;
    --destructive: 0 84.2% 60.2%;
    --destructive-foreground: 0 0% 98%;
    /* Border tuned to L 84% — gives a 6% darker step from surface-2 (the
     * darkest elevated tier above page) and 16% from page, so borders are
     * visible across every tier in the elevation scale (surface-1 / -2 /
     * secondary). Within Refactoring UI's "border 5-10% darker than
     * adjacent surface" guidance. */
    --border: 0 0% 84%;
    --input: 0 0% 84%;
    --ring: 0 0% 63%;
    --radius: 0.625rem;
    --chart-1: 12 76% 61%;
    --chart-2: 173 58% 39%;
    --chart-3: 197 37% 24%;
    --chart-4: 43 74% 66%;
    --chart-5: 27 87% 67%;

    /* Multica custom tokens */
    --brand: 225 71% 58%;
    --brand-foreground: 0 0% 98%;
    --success: 142 71% 45%;
    --warning: 48 89% 47%;
    --info: 217 91% 60%;
    --priority: 25 95% 53%;
    --code-surface: 240 4% 92%;

    /* Surface elevation scale — a 5-tier ladder above page bg, calibrated
     * to Refactoring UI's "≥5% L difference is the perceptibility threshold"
     * + Material 3 surface-container scale. shadcn's `secondary` /
     * `muted` / `accent` slot (L 96.1%) stays untouched; we sandwich
     * `surface-1` above it and `surface-2` below for cases shadcn doesn't
     * cover (notably nested elevated cards like comment bubbles + their
     * internal code/table elements).
     *
     *   L 100   page bg / card / popover            (page floor)
     *   L 98    surface-1   subtle elevated         (comment bubble — feels
     *                                                like an iOS settings cell:
     *                                                visible boundary but the
     *                                                fill is almost-page)
     *   L 96.1  secondary / muted / accent          (shadcn default — button
     *                                                hover, chips, skeleton)
     *   L 90    surface-2   nested in surface-1     (code block / table header
     *                                                inside a comment bubble —
     *                                                8% darker than the bubble
     *                                                so the inner box is
     *                                                clearly delineated)
     *   L 84    border                              (visible across all tiers)
     *
     * Future tiers extend as surface-3 etc. Dark mode mirrors this scale
     * inverted (lighter = higher elevation), see .dark:root below. */
    --surface-1: 0 0% 98%;
    --surface-2: 0 0% 90%;
  }

  .dark:root {
    --background: 0 0% 3.9%;
    --foreground: 0 0% 98%;
    --card: 0 0% 3.9%;
    --card-foreground: 0 0% 98%;
    --popover: 0 0% 3.9%;
    --popover-foreground: 0 0% 98%;
    --primary: 0 0% 98%;
    --primary-foreground: 0 0% 9%;
    --secondary: 0 0% 14.9%;
    --secondary-foreground: 0 0% 98%;
    --muted: 0 0% 14.9%;
    --muted-foreground: 0 0% 63.9%;
    --accent: 0 0% 14.9%;
    --accent-foreground: 0 0% 98%;
    --destructive: 0 70.9% 59.4%;
    --destructive-foreground: 0 0% 98%;
    /* Border at L 25% — mirrors the light-mode logic: 6% lighter than
     * surface-2 (the topmost elevated tier), 21% lighter than page (3.9%).
     * Visible across every tier of the dark elevation scale. */
    --border: 0 0% 25%;
    --input: 0 0% 25%;
    --ring: 300 0% 45%;
    --chart-1: 220 70% 50%;
    --chart-2: 160 60% 45%;
    --chart-3: 30 80% 55%;
    --chart-4: 280 65% 60%;
    --chart-5: 340 75% 55%;

    /* Multica custom tokens — dark mirrors light until a screen demands tuning */
    --brand: 225 71% 58%;
    --brand-foreground: 0 0% 98%;
    --success: 142 71% 45%;
    --warning: 48 89% 47%;
    --info: 217 91% 60%;
    --priority: 25 95% 53%;
    /* code-surface is the ONE exception that needs a real dark value —
     * the light value (240 4% 92%) is near-white and would render code
     * blocks with a brighter background than the page in dark mode. */
    --code-surface: 240 4% 18%;

    /* Dark elevation scale — mirrors the light scale but lightness
     * INCREASES with elevation (shadows don't read on dark, so tonal
     * lift is the elevation cue). Comment bubble uses surface-1 (L 8%);
     * nested code/table inside the bubble uses surface-2 (L 19%, 11%
     * lighter than the bubble — well over Refactoring UI's 5% threshold).
     *
     *   L 3.9    page bg / card / popover
     *   L 8      surface-1   subtle elevated         (comment bubble)
     *   L 14.9   secondary / muted / accent          (shadcn default)
     *   L 19     surface-2   nested in surface-1     (code/table inside bubble)
     *   L 25     border                              (visible across all tiers)
     */
    --surface-1: 0 0% 8%;
    --surface-2: 0 0% 19%;
  }
}