@import 'tailwindcss';

/* ------------------------------------------------------------------ */
/*  Fonts — Geist Sans + Geist Mono (self-hosted, .woff2)             */
/* ------------------------------------------------------------------ */
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/Geist-Variable.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/GeistMono-Variable.woff2') format('woff2-variations');
}

/* ------------------------------------------------------------------ */
/*  Material Symbols (variable) — used for the icon set              */
/*  Add new icons in markup as <span class="material-symbols-outlined"> */
/* ------------------------------------------------------------------ */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}
.material-symbols-outlined.fill-1 {
  font-variation-settings:
    'FILL' 1,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

/* ------------------------------------------------------------------ */
/*  Design tokens — lifted from .opencode/stitch/DESIGN.md            */
/* ------------------------------------------------------------------ */
@theme {
  /* surfaces */
  --color-background: #ffffff;
  --color-surface: #ffffff;
  --color-surface-dim: #f9fafb;
  --color-surface-raised: #f9fafb;
  --color-surface-container-low: #ffffff;
  --color-surface-container: #f9fafb;
  --color-surface-container-high: #f3f4f6;
  --color-surface-container-highest: #f3f4f6;
  --color-surface-variant: #f3f4f6;
  --color-border-subtle: #e5e7eb;
  --color-outline: #d1d5db;
  --color-outline-variant: #e5e7eb;

  /* text */
  --color-on-surface: #111827;
  --color-on-surface-variant: #4b5563;
  --color-on-background: #111827;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #6b7280;
  --color-inverse-surface: #111827;
  --color-inverse-on-surface: #ffffff;

  /* brand */
  --color-primary: #318db8;
  --color-primary-container: #dcf0fa;
  --color-on-primary: #ffffff;
  --color-on-primary-container: #001e2c;
  --color-accent-blue: #318db8;
  --color-accent-gold: #eab308;

  /* secondary */
  --color-secondary: #4b5563;
  --color-on-secondary: #ffffff;
  --color-secondary-container: #f3f4f6;
  --color-on-secondary-container: #4b5563;

  /* tertiary */
  --color-tertiary: #ffb95f;
  --color-on-tertiary: #ffffff;

  /* status */
  --color-error: #ef4444;
  --color-on-error: #ffffff;
  --color-success: #10b981;

  /* radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* type */
  --font-sans:
    'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
    sans-serif;
  --font-display: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --text-display-lg: 48px;
  --text-display-lg--line-height: 1.1;
  --text-display-lg--letter-spacing: -0.04em;
  --text-display-lg--font-weight: 700;

  --text-headline-lg: 32px;
  --text-headline-lg--line-height: 1.2;
  --text-headline-lg--letter-spacing: -0.02em;
  --text-headline-lg--font-weight: 600;

  --text-headline-md: 24px;
  --text-headline-md--line-height: 1.3;
  --text-headline-md--letter-spacing: -0.01em;
  --text-headline-md--font-weight: 600;

  --text-body-lg: 18px;
  --text-body-lg--line-height: 1.6;

  --text-body-md: 16px;
  --text-body-md--line-height: 1.5;

  --text-label-md: 14px;
  --text-label-md--line-height: 1;
  --text-label-md--letter-spacing: 0.02em;
  --text-label-md--font-weight: 500;

  --text-code: 14px;
  --text-code--line-height: 1.6;

  /* spacing (4px baseline) */
  --spacing-gutter: 24px;
  --spacing-margin-mobile: 16px;
  --spacing-margin-desktop: 40px;
  --spacing-section: 80px;
  --spacing-xxl: 80px;

  /* containers */
  --container-site: 1440px;
  --container-article: 720px;
  --container-reading-lane: 800px;
}

/* ------------------------------------------------------------------ */
/*  Base layer                                                          */
/* ------------------------------------------------------------------ */
@layer base {
  html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    background-color: var(--color-background);
    color: var(--color-on-surface);
    font-family: var(--font-sans);
    scroll-behavior: smooth;
  }

  body {
    background-color: var(--color-background);
    color: var(--color-on-surface);
    font-size: var(--text-body-md);
    line-height: var(--text-body-md--line-height);
    min-height: 100dvh;
    overflow-x: hidden;
  }

  ::selection {
    background-color: color-mix(in oklab, var(--color-primary) 20%, transparent);
  }

  :focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
  }

  a {
    color: inherit;
  }

  img,
  video,
  svg {
    max-width: 100%;
    height: auto;
  }
}

/* ------------------------------------------------------------------ */
/*  Utilities (component classes referenced across pages)             */
/* ------------------------------------------------------------------ */
@layer components {
  .hairline {
    border: 1px solid var(--color-border-subtle);
  }
  .hairline-hover {
    border: 1px solid var(--color-border-subtle);
    transition: border-color 0.2s ease;
  }
  .hairline-hover:hover {
    border-color: var(--color-primary);
  }
  .mask-fade-b {
    mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
  }
  .glass-nav {
    background-color: color-mix(in oklab, var(--color-background) 80%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
  }
  .grid-noise {
    background-image:
      linear-gradient(var(--color-border-subtle) 1px, transparent 1px),
      linear-gradient(90deg, var(--color-border-subtle) 1px, transparent 1px);
    background-size: 40px 40px;
  }
  .text-balance {
    text-wrap: balance;
  }
  .scrollbar-none {
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .scrollbar-none::-webkit-scrollbar {
    display: none;
  }
}

/* ------------------------------------------------------------------ */
/*  Reduced motion                                                      */
/* ------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}