/* =================================================================
   daca.me — Shared Design Tokens, Variable Typography & Core UI
   Architecture: Cascade Layers (@layer reset, base, components, pages, utilities)
   ================================================================= */

@layer reset, base, components, pages, utilities;

/* Variable Self-Hosted Zero-Trust Fonts */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('/fonts/space-grotesk-latin-wght-normal.woff2') format('woff2-variations');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url('/fonts/jetbrains-mono-latin-wght-normal.woff2') format('woff2-variations');
}

/* Cross-Document View Transitions */
@media (prefers-reduced-motion: no-preference) {
  @view-transition {
    navigation: auto;
  }
  :where(#site-header, .sys-header, header) {
    view-transition-name: site-header;
  }
  :where(.sys-logo, .brand, .logo) {
    view-transition-name: brand-mark;
  }
  :where(.hero-title, .hero h1) {
    view-transition-name: hero-heading;
  }
  :where(.hero-hud-panel, .dispatch-hud, .hud-status-bar) {
    view-transition-name: hero-hud;
  }
  ::view-transition-group(site-header),
  ::view-transition-group(brand-mark),
  ::view-transition-group(hero-heading),
  ::view-transition-group(hero-hud) {
    animation-duration: 0.35s;
    animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  }
}

@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }
}

/* Core Design Tokens */
:root {
  --in-oklab: ;
  --in-oklch: ;

  /* Obsidian Surfaces */
  --bg-pure: #07090e;
  --bg-elevated: #0c1018;
  --bg-card: rgba(15, 21, 34, 0.78);
  --bg-card-hover: rgba(19, 27, 43, 0.94);

  /* Semantic Accents */
  --accent: #f59e0b;
  --accent-bright: #fde047;
  --accent-cyan: #22d3ee;
  --accent-green: #10b981;
  --warning: #f97316;
  --danger: #f87171;

  /* Text & Borders */
  --text-main: #edf2f7;
  --text-muted: #94a3b8;
  --border-subtle: rgba(148, 163, 184, 0.16);
  --border-glow: rgba(148, 163, 184, 0.24);
  --border-bright: rgba(245, 158, 11, 0.42);

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-sans: var(--font-display);

  /* Radii & Scrollbar */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --scrollbar-thumb: #475569;
  --scrollbar-track: #07090e;

  color-scheme: dark;
}

@supports (background: linear-gradient(in oklab, white, black)) {
  :root {
    --in-oklab: in oklab;
    --in-oklch: in oklch;
  }
}

/* Route-Level Accent Overrides */
[data-route="support"] {
  --route-accent: #00e5ff;
  --route-accent-hover: #00b4d8;
  --route-green: #00e676;
  --route-border-glow: rgba(0, 229, 255, 0.28);
}

[data-route="daedalus"] {
  --route-accent: #00f0ff;
  --route-green: #00e676;
  --route-gold: #ffb300;
  --route-magenta: #ff2a6d;
  --route-border-glow: rgba(0, 240, 255, 0.28);
}

[data-route="admin"] {
  --route-accent: #00e5ff;
  --route-green: #00e676;
  --route-orange: #ffb300;
}

@layer reset {
  :where(*, *::before, *::after) {
    box-sizing: border-box;
  }

  :where(html, body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, pre) {
    margin: 0;
  }

  :where(ul, ol) {
    padding: 0;
  }

  :where(img, svg, canvas, video) {
    display: block;
    max-inline-size: 100%;
  }
}

@layer base {
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
    background-color: var(--bg-pure);
    font-family: var(--font-body);
    font-size: 100%;
    color: var(--text-main);
    line-height: 1.5;
    overflow-x: hidden;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    scrollbar-width: thin;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  @supports not (scrollbar-color: auto) {
    html::-webkit-scrollbar { width: 10px; height: 10px; }
    html::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 5px; }
    html::-webkit-scrollbar-track { background: var(--scrollbar-track); }
  }

  body {
    background-color: var(--bg-pure);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 1rem;
    font-size-adjust: from-font;
    line-height: 1.55;
    font-synthesis-weight: none;
  }

  h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-size-adjust: from-font;
    font-kerning: normal;
    text-wrap: balance;
  }

  th {
    text-wrap: balance;
  }

  p, .card-text, .tool-desc, .prose-block li, .exhibit-description, .subtitle {
    text-wrap: pretty;
    overflow-wrap: break-word;
  }

  code, pre, kbd, samp {
    font-family: var(--font-mono);
    font-size-adjust: from-font;
    font-variant-ligatures: none;
  }

  ::selection {
    background: var(--accent-bright);
    color: var(--bg-pure);
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible,
  [role="tab"]:focus-visible {
    outline: 2px solid var(--accent-bright);
    outline-offset: 3px;
  }

  dialog:modal,
  dialog:modal::backdrop {
    cursor: auto;
  }

  dialog:modal :where(button, a) {
    cursor: pointer;
  }
}

@layer components {
  /* Viewport Scroll Progress Indicator */
  #scroll-progress {
    position: fixed;
    inset-block-start: 0;
    inset-inline-start: 0;
    inline-size: 100%;
    block-size: 3px;
    background: linear-gradient(to right var(--in-oklab), var(--accent-bright), var(--accent-green), var(--accent-cyan));
    transform-origin: 0 50%;
    transform: scaleX(0);
    z-index: 10003;
    pointer-events: none;
  }

  @media (prefers-reduced-motion: no-preference) {
    @supports (animation-timeline: scroll()) {
      @keyframes grow-progress {
        from { transform: scaleX(0); }
        to { transform: scaleX(1); }
      }
      #scroll-progress {
        animation: grow-progress auto linear;
        animation-timeline: scroll(block root);
      }
    }
  }

  /* Accessibility Utilities */
  .skip-link {
    position: absolute;
    inset-block-start: -60px;
    inset-inline-start: 0;
    background: var(--accent-bright);
    color: var(--bg-pure);
    padding: 0.75rem 1.5rem;
    z-index: 10005;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    transition: inset-block-start 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .skip-link:focus {
    inset-block-start: 0;
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .visually-hidden:where(:not(:focus-within, :active)) {
    position: absolute !important;
    clip-path: inset(50%) !important;
    overflow: hidden !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    border: 0 !important;
    white-space: nowrap !important;
  }

  /* Invoker Copy Button Primitive */
  .copy-wrap {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    position: relative;
    flex: none;
  }

  .copy-button {
    min-inline-size: 32px;
    min-block-size: 32px;
    padding: 0.3rem 0.6rem;
    background: rgba(15, 21, 34, 0.9);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-sm);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
  }

  .copy-button:hover {
    border-color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.12);
  }

  .copy-button[data-copied] {
    border-color: var(--accent-green);
    color: var(--accent-green);
    background: rgba(16, 185, 129, 0.12);
  }

  .copy-tip {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-green);
    opacity: 0;
    transition: opacity 0.15s ease;
    white-space: nowrap;
  }

  .copy-button[data-copied] + .copy-tip,
  .copy-button[data-failed] + .copy-tip {
    opacity: 1;
  }

  /* Global Command Palette Trigger & Modal <dialog> */
  .cmd-palette-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(15, 21, 34, 0.85);
    border: 1px solid var(--border-glow);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 0.38rem 0.65rem;
    min-block-size: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color 0.18s ease, color 0.18s ease;
  }

  .cmd-palette-trigger:hover,
  .cmd-palette-trigger:focus-visible {
    border-color: var(--accent-cyan);
    color: var(--text-main);
  }

  .cmd-palette-trigger kbd {
    font-family: var(--font-mono);
    font-size: 0.64rem;
    font-weight: 600;
    background: rgba(148, 163, 184, 0.14);
    color: var(--text-main);
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
  }

  dialog.cmd-palette {
    margin: 10vh auto auto;
    width: min(92vw, 620px);
    max-height: 75vh;
    background: rgba(9, 13, 22, 0.97);
    color: var(--text-main);
    border: 1px solid var(--border-glow);
    border-radius: 10px;
    padding: 0;
    box-shadow: 0 28px 80px rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    opacity: 0;
    transition-property: opacity, transform, display, overlay;
    transition-duration: 0.22s;
    transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
    transition-behavior: allow-discrete;
  }

  @media (prefers-reduced-motion: no-preference) {
    dialog.cmd-palette {
      transform: scale(0.96) translateY(-8px);
    }
  }

  dialog.cmd-palette:modal {
    overscroll-behavior: contain;
  }

  dialog.cmd-palette::backdrop {
    overflow: hidden;
    overscroll-behavior: contain;
    background-color: rgba(3, 5, 10, 0);
    backdrop-filter: blur(4px);
    transition-property: background-color, display, overlay;
    transition-duration: 0.22s;
    transition-behavior: allow-discrete;
  }

  dialog.cmd-palette[open]:where(:not([data-closing])) {
    display: flex;
    flex-direction: column;
    opacity: 1;
    @starting-style { opacity: 0; }
    @media (prefers-reduced-motion: no-preference) {
      transform: scale(1) translateY(0);
      @starting-style { transform: scale(0.96) translateY(-8px); }
    }
    &::backdrop {
      background-color: rgba(3, 5, 10, 0.72);
      @starting-style { background-color: rgba(3, 5, 10, 0); }
    }
  }

  @media (prefers-reduced-motion: reduce) {
    dialog.cmd-palette,
    dialog.cmd-palette::backdrop {
      transition-duration: 0.08s;
    }
  }

  .cmd-palette-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .cmd-palette-title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-main);
    letter-spacing: 0.06em;
    font-weight: 600;
  }

  .cmd-palette-close {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glow);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 0.22rem 0.55rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
  }

  .cmd-palette-close:hover {
    color: #fff;
    border-color: var(--accent-cyan);
  }

  .cmd-palette-search-wrap {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .cmd-palette-prompt {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-weight: 700;
  }

  .cmd-palette-input {
    width: 100%;
    background: transparent;
    border: none;
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.92rem;
    outline: none;
  }

  .cmd-palette-list {
    list-style: none;
    overflow-y: auto;
    padding: 0.5rem;
    max-height: 46vh;
  }

  .cmd-palette-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid transparent;
  }

  .cmd-palette-item.is-active {
    background: rgba(34, 211, 238, 0.1);
    border-color: rgba(34, 211, 238, 0.35);
  }

  .cmd-item-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    min-width: 0;
  }

  .cmd-item-group {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--accent-green);
    background: rgba(16, 185, 129, 0.12);
    padding: 0.15rem 0.45rem;
    border-radius: 3px;
    flex-shrink: 0;
  }

  .cmd-item-label {
    font-size: 0.86rem;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .cmd-item-hint {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    flex-shrink: 0;
  }

  .cmd-palette-empty {
    padding: 1.25rem;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-muted);
  }

  .cmd-palette-foot {
    padding: 0.55rem 1rem;
    border-top: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    text-align: right;
  }
}

/* Global Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }
  .reveal-element {
    opacity: 1 !important;
    transform: none !important;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@layer utilities {
  .u-outline-none { outline: none; }
  .u-mb-0 { margin-bottom: 0; }
  .u-mt-1 { margin-top: 1rem; }
  .u-mb-125 { margin-bottom: 1.25rem; }
  .u-text-warn { color: var(--warning); }
  .u-text-muted { color: var(--text-muted); }
}