globals.css

@import "tailwindcss";
@import "katex/dist/katex.min.css";
@import "@clerk/themes/shadcn.css";
@import "./vaul-base.css";

@import "tw-animate-css";
@plugin "@tailwindcss/typography";

/* Exclude documentation directories from Tailwind's automatic content detection.
   .agents/ contains markdown docs with code examples that include raw Tailwind class
   strings. Without this exclusion, Tailwind extracts those strings as class candidates
   and generates CSS for them — including invalid patterns documented as "wrong" examples,
   which crash Turbopack's CSS parser. */
@source not "../.agents";

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

/* Touch device detection - hides elements on coarse pointer (touch) devices */
@custom-variant pointer-coarse (@media (pointer: coarse));
@custom-variant pointer-fine (@media (pointer: fine));

/* Viewport height variants for conditional sticky behavior (ChatGPT pattern) */
@custom-variant tall (@media (min-height: 40rem));
@custom-variant not-tall (@media (max-height: 39.99rem));

@keyframes collapsible-down {
  from {
    height: 0;
    opacity: 0;
  }
  to {
    height: var(--collapsible-panel-height);
    opacity: 1;
  }
}

@keyframes collapsible-up {
  from {
    height: var(--collapsible-panel-height);
    opacity: 1;
  }
  to {
    height: 0;
    opacity: 0;
  }
}

@theme {
  --font-mono: var(--font-geist-mono);
  --spacing-app-header: 52px;
  --spacing-input-area: 134px;
  --animate-collapsible-down: collapsible-down 200ms ease-out;
  --animate-collapsible-up: collapsible-up 200ms ease-out;

  @keyframes loading-dots {
    0%,
    100% {
      opacity: 0;
    }
    50% {
      opacity: 1;
    }
  }

  @keyframes shimmer {
    from {
      background-position: 200% center;
    }
    to {
      background-position: 0% center;
    }
  }

  @keyframes caret-blink {
    0%,
    100% {
      opacity: 1;
    }
    50% {
      opacity: 0;
    }
  }

  @keyframes caret-fade-out {
    from {
      opacity: 1;
    }
    to {
      opacity: 0;
    }
  }

  @keyframes indicator-glyph-spin {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }

  @keyframes indicator-wave {
    0%,
    100% {
      transform: scaleY(0.6);
      opacity: 0.5;
    }
    50% {
      transform: scaleY(1);
      opacity: 1;
    }
  }

  @keyframes indicator-dot-trail {
    0% {
      transform: translateX(-0.2em);
      opacity: 0;
    }
    25% {
      opacity: 1;
    }
    100% {
      transform: translateX(0.25em);
      opacity: 0;
    }
  }

  @keyframes indicator-pulse-dot {
    0%,
    100% {
      transform: scale(0.8);
      opacity: 0.5;
    }
    50% {
      transform: scale(1.2);
      opacity: 1;
    }
  }

  @keyframes indicator-underscore-shimmer {
    from {
      background-position: 200% center;
    }
    to {
      background-position: 0% center;
    }
  }

  @keyframes indicator-soft-glow {
    0%,
    100% {
      opacity: 0.55;
      box-shadow: 0 0 0 0 color-mix(in oklab, var(--foreground) 30%, transparent);
    }
    50% {
      opacity: 1;
      box-shadow: 0 0 8px 1px color-mix(in oklab, var(--foreground) 45%, transparent);
    }
  }
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);
  --color-sidebar-ring: var(--sidebar-ring);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar: var(--sidebar);
  --color-chart-5: var(--chart-5);
  --color-chart-4: var(--chart-4);
  --color-chart-3: var(--chart-3);
  --color-chart-2: var(--chart-2);
  --color-chart-1: var(--chart-1);
  --color-ring: var(--ring);
  --color-input: var(--input);
  --color-border: var(--border);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-destructive: var(--destructive);
  --color-accent-foreground: var(--accent-foreground);
  --color-accent: var(--accent);
  --color-muted-foreground: var(--muted-foreground);
  --color-muted: var(--muted);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-secondary: var(--secondary);
  --color-primary-foreground: var(--primary-foreground);
  --color-primary: var(--primary);
  --color-popover-foreground: var(--popover-foreground);
  --color-popover: var(--popover);
  --color-card-foreground: var(--card-foreground);
  --color-card: var(--card);
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);

  --spacing-scroll-area: calc(
    -1 * var(--spacing-input-area)
  );
  --spacing-scroll-anchor-offset: 140px;
  --spacing-scroll-anchor: calc(
    var(--spacing-scroll-area) - var(--spacing-scroll-anchor-offset) + 100dvh
  );
}

:root {
  /* Sidebar dimensions */
  --sidebar-width: 16rem;
  --sidebar-rail-width: 3.25rem;
  --sidebar-header-height: 3.25rem;
  
  /* Sidebar spacing */
  --sidebar-section-first-margin-top: 0.5rem;
  --sidebar-section-margin-top: 1rem;
  --sidebar-collapsed-section-margin-bottom: 0.25rem;
  --sidebar-expanded-section-margin-bottom: 0.5rem;
  --sidebar-item-gap: 0.375rem;

  /* Sticky header z-index */
  --header-z-index: 20;

  /* Scroll padding (no longer need fixed header compensation) */
  --spacing-scroll-padding-top: 0px;

  --background: oklch(1 0 0);
  --foreground: oklch(0.141 0.005 285.823);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.141 0.005 285.823);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.141 0.005 285.823);
  --primary: oklch(0.21 0.006 285.885);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.967 0.001 286.375);
  --secondary-foreground: oklch(0.21 0.006 285.885);
  --muted: oklch(0.967 0.001 286.375);
  --muted-foreground: oklch(0.552 0.016 285.938);
  --accent: oklch(0.967 0.001 286.375);
  --accent-foreground: oklch(0.21 0.006 285.885);
  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.577 0.245 27.325);
  --border: oklch(0.92 0.004 286.32);
  --input: oklch(0.92 0.004 286.32);
  --ring: oklch(0.705 0.015 286.067);
  --chart-1: oklch(0.646 0.222 41.116);
  --chart-2: oklch(0.6 0.118 184.704);
  --chart-3: oklch(0.398 0.07 227.392);
  --chart-4: oklch(0.828 0.189 84.429);
  --chart-5: oklch(0.769 0.188 70.08);
  --radius: 0.625rem;
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.141 0.005 285.823);
  --sidebar-primary: oklch(0.21 0.006 285.885);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.967 0.001 286.375);
  --sidebar-accent-foreground: oklch(0.21 0.006 285.885);
  --sidebar-border: oklch(0.92 0.004 286.32);
  --sidebar-ring: oklch(0.705 0.015 286.067);

  /* Composer surface */
  --composer-shadow-drop: rgba(0, 0, 0, 0.04);
  --composer-shadow-edge: rgba(0, 0, 0, 0.62);
  --composer-shadow-drop-offset: 0px 4px 4px 0px;
  --composer-shadow-edge-offset: 0px 0px 1px 0px;
  --composer-bg: var(--background);
}

.dark {
  --background: oklch(21.34% 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(21.34% 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(26.45% 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.985 0 0);
  --primary-foreground: oklch(0.21 0.006 285.885);
  --secondary: oklch(0.30 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.274 0.006 286.033);
  --muted-foreground: oklch(0.705 0.015 286.067);
  --accent: oklch(100% 0 0 / 10.2%);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.6 0.18 15);
  --destructive-foreground: oklch(0.95 0.01 20);
  --border: oklch(100% 0 0 / 8%);
  --input: oklch(0.35 0.006 286.033);
  --ring: oklch(0.442 0.017 285.786);
  --chart-1: oklch(0.488 0.243 264.376);
  --chart-2: oklch(0.696 0.17 162.48);
  --chart-3: oklch(0.769 0.188 70.08);
  --chart-4: oklch(0.627 0.265 303.9);
  --chart-5: oklch(0.645 0.246 16.439);
  --sidebar: oklch(19% 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-primary: oklch(26.45% 0 0);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(100% 0 0 / 8%);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(0.274 0.006 286.033);
  --sidebar-ring: oklch(0.705 0.015 286.067);

  /* Composer surface — dark mode shadow tokens */
  --composer-shadow-drop: rgba(0, 0, 0, 0.1);
  --composer-shadow-edge: rgba(255, 255, 255, 0.2);
  --composer-shadow-drop-offset: 0px 4px 12px 0px;
  --composer-shadow-edge-offset: inset 0px 0px 1px 0px;
  --composer-bg: oklch(24.56% 0 0);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  body {
    @apply bg-background text-foreground;
  }
}

@layer utilities {
  .shadow-composer {
    box-shadow:
      var(--composer-shadow-drop-offset) var(--composer-shadow-drop),
      var(--composer-shadow-edge-offset) var(--composer-shadow-edge);
  }
}

code {
  font-family: var(--font-geist-mono);
  font-feature-settings: var(--default-mono-font-feature-settings);
  font-variation-settings: var(--default-mono-font-variation-settings);
}

/* Typography: balanced headings, pretty body text (progressive enhancement) */
.prose :is(h1, h2, h3, h4) {
  text-wrap: balance;
}
.prose p,
.prose li {
  text-wrap: pretty;
}

/* Typography plugin → design token bridge
   Maps @tailwindcss/typography color variables to our design tokens
   so prose content (chat messages) uses the same palette as the UI.
   Must target .prose (not :root) because the plugin sets these vars
   on .prose elements directly — a direct declaration beats inheritance. */
.prose {
  --tw-prose-body: var(--foreground);
  --tw-prose-headings: var(--foreground);
  --tw-prose-lead: var(--muted-foreground);
  --tw-prose-links: var(--foreground);
  --tw-prose-bold: var(--foreground);
  --tw-prose-counters: var(--muted-foreground);
  --tw-prose-bullets: var(--muted-foreground);
  --tw-prose-hr: var(--border);
  --tw-prose-quotes: var(--foreground);
  --tw-prose-quote-borders: var(--border);
  --tw-prose-captions: var(--muted-foreground);
  --tw-prose-kbd: var(--foreground);
  --tw-prose-kbd-shadows: color-mix(in oklab, var(--foreground) 10%, transparent);
  --tw-prose-code: var(--foreground);
  --tw-prose-pre-code: var(--foreground);
  --tw-prose-pre-bg: var(--muted);
  --tw-prose-th-borders: var(--border);
  --tw-prose-td-borders: var(--border);
}

.prose [data-footnote-ref] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 0.125rem;
  border-radius: 9999px;
  background-color: var(--muted);
  padding: 0.0625rem 0.375rem;
  font-family: var(--font-geist-mono);
  font-size: 0.75rem;
  line-height: 1.1;
  color: var(--muted-foreground);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.prose [data-footnote-ref]:hover {
  background-color: color-mix(in oklab, var(--muted) 70%, var(--foreground) 30%);
  color: var(--foreground);
}

.prose section[data-footnotes] {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  font-size: 0.875rem;
}

.prose [data-footnote-backref] {
  color: var(--muted-foreground);
  text-decoration: none;
}

/* sonner toast */
[data-sonner-toaster] > li {
  width: 100%;
}