/* Overlook — reusable UI components (Linear/Cursor-style).
 *
 * Uses tokens from tokens.css. All classes are namespaced `.ov-*` so they
 * won't collide with legacy styles in style.css while we migrate.
 */

/* ---------- Reset / base ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.ov {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11", "ss01";
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* ---------- Layout helpers --------------------------------------------- */
.ov-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.ov-container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ---------- Typography utilities --------------------------------------- */
.ov-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
}
.ov-kicker::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-gradient);
}

.ov-h1, .ov-h2, .ov-h3 {
  font-family: var(--font-display);
  letter-spacing: var(--tracking-tighter);
  line-height: var(--leading-tight);
  margin: 0;
  font-weight: 600;
}
.ov-h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); }
.ov-h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 2.5rem); }
.ov-h3 { font-size: var(--text-xl); letter-spacing: var(--tracking-tight); }

.ov-lede {
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  max-width: 48ch;
}

.ov-gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------------------------------------------------- */
.ov-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: -0.005em;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--duration) var(--ease),
    border-color var(--duration) var(--ease),
    transform var(--duration-fast) var(--ease),
    box-shadow var(--duration) var(--ease);
  user-select: none;
}
.ov-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.ov-btn:active:not(:disabled) { transform: translateY(1px); }

.ov-btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.ov-btn-primary:hover:not(:disabled) {
  background: var(--zinc-200);
}
:root[data-theme="light"] .ov-btn-primary:hover:not(:disabled) {
  background: var(--zinc-800);
}

.ov-btn-accent {
  background: var(--accent-gradient);
  color: var(--text-on-accent);
  box-shadow: 0 1px 0 rgba(255,255,255,0.12) inset, 0 0 0 1px rgba(139,92,246,0.25);
}
.ov-btn-accent:hover:not(:disabled) {
  filter: brightness(1.1);
  box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset,
              0 0 0 1px rgba(139,92,246,0.4),
              var(--shadow-glow);
}

.ov-btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.ov-btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.ov-btn-quiet {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.ov-btn-quiet:hover:not(:disabled) {
  color: var(--text);
  background: var(--bg-hover);
}

.ov-btn-lg { height: 44px; padding: 0 var(--space-6); font-size: var(--text-base); border-radius: var(--radius-md); }
.ov-btn-sm { height: 28px; padding: 0 var(--space-3); font-size: var(--text-xs); }

/* ---------- Badges / tags ---------------------------------------------- */
.ov-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  background: var(--bg-muted);
  border: 1px solid var(--border);
}
.ov-badge-accent {
  color: var(--violet-400);
  background: var(--accent-bg);
  border-color: rgba(139, 92, 246, 0.25);
}
.ov-badge-dot::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}

/* ---------- Card -------------------------------------------------------- */
.ov-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition:
    border-color var(--duration) var(--ease),
    background var(--duration) var(--ease);
}
.ov-card-hover:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated-2);
}

/* Gradient-border card for hero spotlight items. Uses the mask trick so
   the border appears as a subtle glow without painting the whole card. */
.ov-card-glow {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--border);
  overflow: hidden;
}
.ov-card-glow::before {
  content: "";
  position: absolute; inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg,
    rgba(139, 92, 246, 0.6) 0%,
    rgba(6, 182, 212, 0.5) 35%,
    transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0.7;
  pointer-events: none;
}

/* ---------- Nav -------------------------------------------------------- */
.ov-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in oklab, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border-subtle);
}
.ov-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.ov-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-md);
  letter-spacing: var(--tracking-tight);
  color: var(--text);
}
.ov-logo-mark {
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--accent-gradient);
  box-shadow: 0 0 16px rgba(139,92,246,0.45);
}
.ov-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.ov-nav-link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--duration) var(--ease);
}
.ov-nav-link:hover { color: var(--text); }
.ov-nav-actions { display: flex; align-items: center; gap: var(--space-2); }

@media (max-width: 780px) {
  .ov-nav-links { display: none; }
}

/* ---------- Section spacing -------------------------------------------- */
.ov-section {
  padding: var(--space-24) 0;
}
.ov-section-tight { padding: var(--space-16) 0; }
.ov-section-sm    { padding: var(--space-12) 0; }

.ov-section-head {
  max-width: 720px;
  margin: 0 0 var(--space-12) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.ov-section-head.center { margin-left: auto; margin-right: auto; text-align: center; align-items: center; }

/* ---------- Grid backgrounds (decorative) ----------------------------- */
.ov-bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 70%);
  opacity: 0.7;
}
.ov-bg-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--accent-glow);
  opacity: 0.8;
}

/* ---------- Focus ring ------------------------------------------------- */
.ov-btn:focus-visible,
.ov-nav-link:focus-visible,
.ov-input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Inputs ----------------------------------------------------- */
.ov-input {
  width: 100%;
  height: 36px;
  padding: 0 var(--space-3);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: var(--text-sm);
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}
.ov-input::placeholder { color: var(--text-faint); }
.ov-input:hover { border-color: var(--border-strong); }
.ov-input:focus { border-color: var(--accent); outline: none; }

/* ---------- Detail list ------------------------------------------------ */
.ov-kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}
.ov-kv dt { color: var(--text-muted); }
.ov-kv dd { margin: 0; color: var(--text); }