@import "tailwindcss";

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

@theme {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --color-bg: var(--bg);
  --color-bg-subtle: var(--bg-subtle);
  --color-bg-muted: var(--bg-muted);
  --color-bg-elevated: var(--bg-elevated);
  --color-fg: var(--fg);
  --color-fg-muted: var(--fg-muted);
  --color-fg-subtle: var(--fg-subtle);
  --color-border: var(--border);
  --color-border-strong: var(--border-strong);
  --color-accent: var(--accent);
  --color-accent-fg: var(--accent-fg);
  --color-accent-soft: var(--accent-soft);
  --color-success: var(--success);
  --color-success-soft: var(--success-soft);
  --color-warning: var(--warning);
  --color-warning-soft: var(--warning-soft);
  --color-danger: var(--danger);
  --color-danger-soft: var(--danger-soft);
  --color-info: var(--info);
  --color-info-soft: var(--info-soft);
  --color-ring: var(--accent);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 14px;

  --shadow-xs: 0 1px 2px rgb(15 23 42 / 0.05);
  --shadow-sm: 0 1px 3px rgb(15 23 42 / 0.08), 0 1px 2px rgb(15 23 42 / 0.04);
  --shadow-md: 0 4px 12px rgb(15 23 42 / 0.08), 0 1px 3px rgb(15 23 42 / 0.05);
  --shadow-lg: 0 12px 32px rgb(15 23 42 / 0.12), 0 2px 6px rgb(15 23 42 / 0.06);

  --animate-fade-in: fade-in 0.25s ease-out both;
  --animate-fade-up: fade-up 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
  --animate-pulse-soft: pulse-soft 2s ease-in-out infinite;
  --animate-flow: flow 3s linear infinite;

  @keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  @keyframes fade-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes pulse-soft {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
  }
  @keyframes flow {
    from { stroke-dashoffset: 24; }
    to { stroke-dashoffset: 0; }
  }
}

:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-subtle: #f7f8fa;
  --bg-muted: #eef0f3;
  --bg-elevated: #ffffff;
  --fg: #0b0f19;
  --fg-muted: #4b5563;
  --fg-subtle: #8a93a3;
  --border: #e4e7ec;
  --border-strong: #c9cfd8;
  --accent: #1f5eff;
  --accent-fg: #ffffff;
  --accent-soft: #e8efff;
  --success: #158a4c;
  --success-soft: #e3f5ea;
  --warning: #b7791f;
  --warning-soft: #fbf1dc;
  --danger: #c93b3b;
  --danger-soft: #fbe6e6;
  --info: #2461c7;
  --info-soft: #e6eefb;
}

.dark {
  color-scheme: dark;
  --bg: #0a0d14;
  --bg-subtle: #0f131c;
  --bg-muted: #161b26;
  --bg-elevated: #121721;
  --fg: #eef1f6;
  --fg-muted: #a6afbf;
  --fg-subtle: #6b7484;
  --border: #1f2633;
  --border-strong: #2e3746;
  --accent: #5b8cff;
  --accent-fg: #061029;
  --accent-soft: #14213f;
  --success: #3ccb7f;
  --success-soft: #10291c;
  --warning: #e0a94a;
  --warning-soft: #2b2312;
  --danger: #f06b6b;
  --danger-soft: #331717;
  --info: #6fa2ff;
  --info-soft: #14213f;
}

@layer base {
  * {
    border-color: var(--border);
  }
  html {
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
    font-feature-settings: "cv11", "ss01", "calt";
  }
  body {
    @apply bg-bg text-fg font-sans antialiased;
    font-size: 15px;
    line-height: 1.55;
  }
  ::selection {
    background: color-mix(in oklab, var(--accent) 25%, transparent);
  }
  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
  }
  h1, h2, h3, h4 {
    letter-spacing: -0.02em;
    text-wrap: balance;
  }
  code, kbd, pre, samp {
    @apply font-mono;
    font-size: 0.92em;
  }
  input, textarea, select, button {
    font: inherit;
  }
  input::placeholder, textarea::placeholder {
    color: var(--fg-subtle);
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
      scroll-behavior: auto !important;
    }
  }
}

@layer utilities {
  .container-page {
    @apply mx-auto w-full max-w-6xl px-5 sm:px-8;
  }
  .text-balance {
    text-wrap: balance;
  }
  .tabular {
    font-variant-numeric: tabular-nums;
  }
  .grid-bg {
    background-image: linear-gradient(to right, color-mix(in oklab, var(--border) 60%, transparent) 1px, transparent 1px),
      linear-gradient(to bottom, color-mix(in oklab, var(--border) 60%, transparent) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  }
  .scrollbar-thin {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
  }
  .no-scrollbar::-webkit-scrollbar {
    display: none;
  }
  .no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
}

/* Syntax highlighting (lightweight, used by CodeBlock) */
.tok-k { color: #7c3aed; }
.tok-s { color: #0f766e; }
.tok-n { color: #b45309; }
.tok-c { color: var(--fg-subtle); font-style: italic; }
.tok-p { color: var(--fg-muted); }
.tok-t { color: #be185d; }
.tok-a { color: #1d4ed8; }
.dark .tok-k { color: #c4b5fd; }
.dark .tok-s { color: #6ee7b7; }
.dark .tok-n { color: #fcd34d; }
.dark .tok-t { color: #f9a8d4; }
.dark .tok-a { color: #93c5fd; }