@import "tailwindcss";

@plugin "tailwindcss-animate";

@custom-variant dark (&:where(.dark, .dark *));

@theme {
  --font-sans: var(--font-geist-sans), ui-sans-serif, system-ui, sans-serif;
  --font-mono: var(--font-geist-mono), ui-monospace, SFMono-Regular, monospace;

  /* shadcn / legacy tokens, preserved for component compatibility */
  --color-background: var(--background);
  --color-foreground: var(--foreground);

  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);

  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);

  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);

  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);

  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);

  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);

  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);

  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);

  --color-chart-1: var(--chart-1);
  --color-chart-2: var(--chart-2);
  --color-chart-3: var(--chart-3);
  --color-chart-4: var(--chart-4);
  --color-chart-5: var(--chart-5);

  /*
   * Design system tokens (DESIGN.md). Use these in new components.
   * Surfaces stack via luminance, accent is reserved for interactive cyan,
   * status colors are reserved for actual semantic status.
   */
  --color-surface-0: var(--surface-0);
  --color-surface-1: var(--surface-1);
  --color-surface-2: var(--surface-2);
  --color-surface-3: var(--surface-3);

  --color-text-primary: var(--text-primary);
  --color-text-secondary: var(--text-secondary);
  --color-text-tertiary: var(--text-tertiary);

  --color-accent-primary: var(--accent-primary);
  --color-accent-primary-soft: var(--accent-primary-soft);
  --color-accent-primary-border: var(--accent-primary-border);

  --color-border-default: var(--border-default);
  --color-border-subtle: var(--border-subtle);

  --color-status-success: var(--status-success);
  --color-status-warning: var(--status-warning);
  --color-status-error: var(--status-error);

  --radius-lg: var(--radius);
  --radius-md: calc(var(--radius) - 2px);
  --radius-sm: calc(var(--radius) - 4px);

  --animate-accordion-down: accordion-down 0.2s ease-out;
  --animate-accordion-up: accordion-up 0.2s ease-out;
  --animate-fade-in-up: fade-in-up 600ms cubic-bezier(0.16, 1, 0.3, 1) both;

  @keyframes accordion-down {
    from {
      height: 0;
    }
    to {
      height: var(--radix-accordion-content-height);
    }
  }
  @keyframes accordion-up {
    from {
      height: var(--radix-accordion-content-height);
    }
    to {
      height: 0;
    }
  }
  @keyframes fade-in-up {
    from {
      opacity: 0;
      transform: translate3d(0, 16px, 0);
    }
    to {
      opacity: 1;
      transform: translate3d(0, 0, 0);
    }
  }
}

/*
  The default border color has changed to `currentColor` in Tailwind CSS v4,
  so we've added these compatibility styles to make sure everything still
  looks the same as it did with Tailwind CSS v3.
*/
@layer base {
  *,
  ::after,
  ::before,
  ::backdrop,
  ::file-selector-button {
    border-color: var(--color-gray-200, currentColor);
  }
}

@layer base {
  :root {
    /* Dark Theme Only - Terminal/Hacker Aesthetic */

    /* shadcn / legacy tokens, preserved */
    --background: #0a0a0a;
    --foreground: #ededed;

    --card: #111111;
    --card-foreground: #ededed;

    --popover: #111111;
    --popover-foreground: #ededed;

    --primary: #00d4ff;
    --primary-foreground: #000000;

    --secondary: #7c3aed;
    --secondary-foreground: #ffffff;

    --muted: #1a1a1a;
    --muted-foreground: #a1a1a1;

    --accent: #1a1a1a;
    --accent-foreground: #ededed;

    --destructive: #ef4444;
    --destructive-foreground: #ffffff;

    --border: #262626;
    --input: #262626;
    --ring: #00d4ff;

    /* Charts */
    --chart-1: #00d4ff;
    --chart-2: #7c3aed;
    --chart-3: #10b981;
    --chart-4: #f59e0b;
    --chart-5: #ef4444;

    /* Code */
    --code-bg: #1e1e2e;
    --code-text: #cdd6f4;

    /*
     * Design system tokens (DESIGN.md).
     * Surfaces stack by luminance, not by shadow. Borders are punctuation.
     * Cyan is the only chromatic brand color.
     */
    --surface-0: #0a0a0a;
    --surface-1: rgba(255, 255, 255, 0.018);
    --surface-2: rgba(255, 255, 255, 0.035);
    --surface-3: rgba(255, 255, 255, 0.055);

    --text-primary: #ededed;
    --text-secondary: #a1a1a1;
    --text-tertiary: #71717a;

    --accent-primary: #00d4ff;
    --accent-primary-soft: rgba(0, 212, 255, 0.1);
    --accent-primary-border: rgba(0, 212, 255, 0.2);

    --border-default: #262626;
    --border-subtle: rgba(255, 255, 255, 0.06);

    --status-success: #10b981;
    --status-warning: #f59e0b;
    --status-error: #ef4444;

    /* Spacing */
    --radius: 0.5rem;

    /* Typography */
    --font-geist-sans: var(--font-geist-sans);
    --font-geist-mono: var(--font-geist-mono);

    --font-heading: var(--font-geist-sans);
    --font-body: var(--font-geist-sans);
    --font-code: var(--font-geist-mono);
  }
}

@layer base {
  * {
    @apply border-border;
  }
  body {
    @apply bg-background text-foreground;
    font-feature-settings:
      "rlig" 1,
      "calt" 1;
  }

  /*
   * Hero background image fades in after first paint so the headline text is
   * the LCP candidate. The image is decorative (opacity 30%) and is preloaded
   * with low priority so it doesn't compete with critical resources.
   */
  .hero-bg {
    opacity: 0;
    animation: hero-bg-fade-in 600ms ease-out 200ms forwards;
  }
  @keyframes hero-bg-fade-in {
    to {
      opacity: 0.3;
    }
  }
  @media (prefers-reduced-motion: reduce) {
    .hero-bg {
      animation: none;
      opacity: 0.3;
    }
  }
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-family: var(--font-geist-sans);
  }

  [lang|="ko"] h1,
  [lang|="ko"] h2,
  [lang|="ko"] h3,
  [lang|="ko"] h4,
  [lang|="ko"] h5,
  [lang|="ko"] h6,
  [lang|="ja"] h1,
  [lang|="ja"] h2,
  [lang|="ja"] h3,
  [lang|="ja"] h4,
  [lang|="ja"] h5,
  [lang|="ja"] h6,
  [lang|="zh"] h1,
  [lang|="zh"] h2,
  [lang|="zh"] h3,
  [lang|="zh"] h4,
  [lang|="zh"] h5,
  [lang|="zh"] h6 {
    letter-spacing: normal !important;
    text-wrap: pretty;
  }

  :where([lang|="ko"], [lang|="ja"], [lang|="zh"])
    :where(p, li, blockquote, figcaption, td, th, a, button, span) {
    overflow-wrap: break-word;
  }

  [lang|="ko"]
    :where(h1, h2, h3, h4, h5, h6, p, li, blockquote, figcaption, td, th, a, button, span) {
    word-break: keep-all;
  }

  :where([lang|="ja"], [lang|="zh"])
    :where(h1, h2, h3, h4, h5, h6, p, li, blockquote, figcaption, td, th, a, button, span) {
    word-break: normal;
    line-break: strict;
  }

  html {
    scroll-behavior: auto;
  }

  ::selection {
    @apply bg-primary/20 text-primary;
  }

  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-track {
    @apply bg-muted;
  }
  ::-webkit-scrollbar-thumb {
    @apply bg-border hover:bg-muted-foreground/50 rounded-full transition-colors;
  }
}

@layer utilities {
  .glow-cyan {
    box-shadow: 0 0 15px -5px rgba(0, 212, 255, 0.3);
  }
  .glow-purple {
    box-shadow: 0 0 15px -5px rgba(124, 58, 237, 0.3);
  }

  .text-glow-cyan {
    text-shadow: 0 0 8px rgba(0, 212, 255, 0.3);
  }

  /*
   * Section entrance — fade-in-up with stagger via CSS var.
   * Set `--reveal-index` on each child (0, 1, 2, ...) to cascade.
   * Respects prefers-reduced-motion (no-op when reduce is set).
   */
  .reveal-on-enter {
    animation: fade-in-up 600ms cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: calc(var(--reveal-index, 0) * 80ms);
  }
  @media (prefers-reduced-motion: reduce) {
    .reveal-on-enter {
      animation: none;
      opacity: 1;
      transform: none;
    }
  }

  /*
   * Hairline cyan focus ring. Use on interactive elements that need
   * a more prominent affordance than the default ring var.
   */
  .ring-cyan {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow:
      0 0 0 2px var(--background),
      0 0 0 4px var(--accent-primary);
  }
}

@layer components {
  .docs-content h1 {
    @apply mt-8 mb-4 scroll-mt-24 text-4xl font-bold tracking-tight first:mt-0;
  }
  .docs-content h2 {
    @apply mt-12 mb-4 scroll-mt-24 text-2xl font-semibold tracking-tight;
  }
  .docs-content h3 {
    @apply mt-8 mb-3 scroll-mt-24 text-xl font-semibold tracking-tight;
  }
  .docs-content h4 {
    @apply mt-6 mb-2 scroll-mt-24 text-lg font-semibold tracking-tight;
  }
  .docs-content p {
    @apply text-muted-foreground my-4 leading-7;
  }
  .docs-content a {
    @apply text-primary font-medium underline underline-offset-4;
  }
  .docs-content ul {
    @apply text-muted-foreground my-4 ml-6 list-disc space-y-1;
  }
  .docs-content ol {
    @apply text-muted-foreground my-4 ml-6 list-decimal space-y-1;
  }
  .docs-content li {
    @apply leading-7;
  }
  .docs-content blockquote {
    @apply border-primary/40 my-6 border-l-4 pl-4 italic;
  }
  .docs-content code:not(pre code) {
    @apply bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-sm;
  }
  .docs-content pre {
    @apply border-border/50 my-4 overflow-x-auto rounded-lg border bg-[#1e1e2e] p-4 font-mono text-sm text-[#cdd6f4] shadow-sm;
  }
  .docs-content pre code {
    @apply bg-transparent p-0 text-inherit;
  }
  .docs-content table {
    @apply border-border my-6 w-full border-collapse border text-sm;
  }
  .docs-content thead {
    @apply bg-muted;
  }
  .docs-content th {
    @apply border-border border px-3 py-2 text-left font-semibold;
  }
  .docs-content td {
    @apply border-border text-muted-foreground border px-3 py-2;
  }
  .docs-content hr {
    @apply border-border my-8;
  }
  .docs-content strong {
    @apply text-foreground font-semibold;
  }
}