/* Surfaces — cards, bento, panels, pills, stats. All shape/density props
 * come from --theme-* tokens so themes mutate geometry, not just color. */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.wrap-narrow  { max-width: 68ch; margin-inline: auto; }
.wrap-reading { max-width: 76ch; }

.section {
  padding-block: clamp(var(--sp-8), 8vw, var(--sp-12));
  position: relative;
}
.section--tight { padding-block: clamp(var(--sp-6), 5vw, var(--sp-9)); }
.section--flush { padding-top: 0; }

.section-head {
  max-width: 62ch;
  margin-bottom: var(--sp-8);
}
.section-head p { margin-top: var(--sp-3); color: var(--ink-mid); font-size: var(--fs-lg); }
.section-head.center { margin-inline: auto; text-align: center; }

/* Surface primitives */
.surface {
  background: color-mix(in oklab, var(--surface-1) calc(var(--theme-surface-alpha) * 100%), transparent);
  border: var(--theme-border-width) solid var(--line-soft);
  border-radius: var(--theme-radius-card);
  box-shadow: var(--shadow-sm), var(--shadow-inner);
}

.card {
  position: relative;
  background: color-mix(in oklab, var(--surface-1) calc(var(--theme-surface-alpha) * 100%), transparent);
  border: var(--theme-border-width) solid var(--line-soft);
  border-radius: var(--theme-radius-card);
  padding: calc(var(--sp-6) * var(--theme-density));
  box-shadow: var(--shadow-md), var(--shadow-inner);
  backdrop-filter: blur(var(--theme-card-blur));
  -webkit-backdrop-filter: blur(var(--theme-card-blur));
  transform: perspective(1200px) rotateX(0) rotateY(0) translateY(0) translateZ(0);
  transform-style: preserve-3d;
  transition: transform var(--dur-base) var(--ease-out-soft),
              box-shadow var(--dur-base) var(--ease-out-soft),
              border-color var(--dur-base) var(--ease-out-soft),
              border-radius var(--dur-base) var(--ease-out-soft);
  isolation: isolate;
}
.card:hover {
  transform:
    perspective(1200px)
    rotateX(calc(var(--tilt-x, var(--theme-tilt, 1.5deg) * -1)))
    rotateY(var(--tilt-y, var(--theme-tilt, 1.5deg)))
    translateY(-4px)
    translateZ(6px);
  box-shadow: var(--shadow-lift), var(--shadow-inner);
  border-color: var(--line-mid);
}
.card--flat   { box-shadow: none; background: var(--surface-2); }
.card--inset  { background: var(--surface-inset); box-shadow: inset 0 1px 0 var(--line-soft); }
.card--quiet  { background: transparent; box-shadow: none; }
.card--glass {
  background: color-mix(in oklab, var(--surface-1) 40%, transparent);
  backdrop-filter: blur(calc(18px + var(--theme-card-blur))) saturate(160%);
  -webkit-backdrop-filter: blur(calc(18px + var(--theme-card-blur))) saturate(160%);
  border: 1px solid color-mix(in oklab, var(--ink-high) 10%, var(--line-soft));
  box-shadow: var(--shadow-md), inset 0 1px 0 color-mix(in oklab, var(--ink-high) 8%, transparent);
}
.card--glow {
  box-shadow: var(--shadow-lift), var(--shadow-glow), var(--shadow-inner);
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--line-mid));
}
.card--emphasis {
  background: var(--surface-1);
  border: calc(var(--theme-border-width) + 0.5px) solid color-mix(in oklab, var(--color-primary) 40%, var(--line-mid));
}
.card--xl { padding: calc(var(--sp-8) * var(--theme-density)); }

.card__icon {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--theme-radius-input);
  background: color-mix(in oklab, var(--color-primary) 14%, var(--surface-2));
  color: var(--color-primary);
  margin-bottom: var(--sp-4);
  box-shadow: var(--shadow-inner);
}
.card__icon > i { width: 22px; height: 22px; }
.card__icon--accent    { background: color-mix(in oklab, var(--color-accent) 14%, var(--surface-2)); color: var(--color-accent); }
.card__icon--secondary { background: color-mix(in oklab, var(--color-secondary) 14%, var(--surface-2)); color: var(--color-secondary); }

.card__title { margin-bottom: var(--sp-2); }
.card__meta  { display: inline-flex; align-items: center; gap: var(--sp-2); font-family: var(--ff-theme-mono); font-size: var(--fs-xs); color: var(--ink-low); margin-bottom: var(--sp-2); }

.card__list { margin-top: var(--sp-4); display: grid; gap: var(--sp-2); }
.card__list li {
  display: flex; align-items: flex-start; gap: var(--sp-2);
  color: var(--ink-mid); font-size: var(--fs-sm);
}
.card__list li > i { width: 16px; height: 16px; color: var(--color-primary); flex-shrink: 0; margin-top: 3px; }

/* Blur panel (controllable per theme) */
.panel-blur {
  background: color-mix(in oklab, var(--surface-1) 72%, transparent);
  backdrop-filter: blur(calc(22px + var(--theme-card-blur))) saturate(140%);
  -webkit-backdrop-filter: blur(calc(22px + var(--theme-card-blur))) saturate(140%);
  border: var(--theme-border-width) solid var(--line-soft);
  border-radius: var(--theme-radius-card);
}

.sheen { position: relative; overflow: hidden; isolation: isolate; }
.sheen::after {
  content: "";
  position: absolute; inset: -40% -20% auto auto;
  width: 60%; aspect-ratio: 1;
  background: radial-gradient(closest-side, color-mix(in oklab, var(--color-primary) 18%, transparent), transparent 70%);
  z-index: -1; pointer-events: none;
}

/* Bento grid */
.bento {
  display: grid;
  gap: var(--theme-bento-gap);
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: minmax(120px, auto);
  transition: gap var(--dur-base) var(--ease-out-soft);
}
.bento > .cell        { grid-column: span 6; }
.bento > .cell--sm    { grid-column: span 4; }
.bento > .cell--md    { grid-column: span 6; }
.bento > .cell--lg    { grid-column: span 8; }
.bento > .cell--wide  { grid-column: span 12; }
.bento > .cell--third { grid-column: span 4; }
.bento > .cell--quart { grid-column: span 3; }
.bento > .cell        { transition: transform var(--dur-slow) var(--ease-out-soft), border-radius var(--dur-base) var(--ease-out-soft); }
@media (max-width: 960px) {
  .bento > .cell, .bento > .cell--sm, .bento > .cell--md, .bento > .cell--lg,
  .bento > .cell--wide, .bento > .cell--third, .bento > .cell--quart { grid-column: span 12; transform: none !important; }
}

.ambient { position: relative; isolation: isolate; overflow: hidden; }
.ambient::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 140%;
  background:
    radial-gradient(ellipse at 20% 10%, color-mix(in oklab, var(--color-primary) 24%, transparent), transparent 60%),
    radial-gradient(ellipse at 90% 80%, color-mix(in oklab, var(--color-accent) 18%, transparent), transparent 55%),
    var(--surface-0);
  z-index: -1;
}

.blob {
  position: absolute;
  border-radius: 42% 58% 55% 45% / 48% 42% 58% 52%;
  filter: blur(48px);
  opacity: 0.45;
  z-index: -1;
  pointer-events: none;
  animation: blob-drift 18s var(--ease-in-out) infinite alternate;
  transition: transform var(--dur-base) var(--ease-out-soft);
  will-change: transform;
}
.ambient:hover .blob {
  transform: translate3d(var(--mouse-x, 0), var(--mouse-y, 0), 0);
  animation-play-state: paused;
}
.blob--primary { background: var(--color-primary); }
.blob--accent  { background: var(--color-accent); }
.blob--secondary { background: var(--color-secondary); }
@keyframes blob-drift {
  0%   { transform: translate(0,0) scale(1) rotate(0deg);  border-radius: 42% 58% 55% 45% / 48% 42% 58% 52%; }
  50%  { transform: translate(3%, -4%) scale(1.08) rotate(12deg); border-radius: 58% 42% 45% 55% / 42% 58% 48% 52%; }
  100% { transform: translate(-2%, 2%) scale(0.96) rotate(-8deg); border-radius: 48% 52% 52% 48% / 58% 42% 52% 48%; }
}

.dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--color-primary) 40%, transparent);
  animation: dot-pulse 2.2s var(--ease-out-soft) infinite;
}
.dot--live   { background: var(--brand-leaf); }
.dot--warn   { background: var(--brand-amber); }
.dot--danger { background: var(--brand-rose); }
.dot--info   { background: var(--brand-sky); }
.dot--muted  { background: var(--ink-whisper); animation: none; }
@keyframes dot-pulse {
  0%   { box-shadow: 0 0 0 0   color-mix(in oklab, var(--color-primary) 45%, transparent); }
  70%  { box-shadow: 0 0 0 10px color-mix(in oklab, var(--color-primary) 0%,  transparent); }
  100% { box-shadow: 0 0 0 0   color-mix(in oklab, var(--color-primary) 0%,  transparent); }
}

.pill {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--theme-radius-pill);
  background: var(--surface-2);
  border: var(--theme-border-width) solid var(--line-mid);
  font-size: var(--fs-xs);
  font-family: var(--ff-theme-mono);
  letter-spacing: 0.04em;
  color: var(--ink-mid);
  transition: background var(--dur-fast) var(--ease-out-soft), border-color var(--dur-fast) var(--ease-out-soft);
}
.pill:hover    { border-color: var(--line-strong); }
.pill--primary { color: var(--color-primary); border-color: color-mix(in oklab, var(--color-primary) 32%, transparent); background: color-mix(in oklab, var(--color-primary) 12%, var(--surface-2)); }
.pill--accent  { color: var(--color-accent);  border-color: color-mix(in oklab, var(--color-accent) 32%, transparent);  background: color-mix(in oklab, var(--color-accent) 12%, var(--surface-2));  }
.pill--success { color: var(--brand-leaf);    border-color: color-mix(in oklab, var(--brand-leaf) 32%, transparent);    background: color-mix(in oklab, var(--brand-leaf) 12%, var(--surface-2));    }
.pill--warn    { color: var(--brand-amber);   border-color: color-mix(in oklab, var(--brand-amber) 32%, transparent);   background: color-mix(in oklab, var(--brand-amber) 12%, var(--surface-2));   }
.pill--danger  { color: var(--brand-rose);    border-color: color-mix(in oklab, var(--brand-rose) 32%, transparent);    background: color-mix(in oklab, var(--brand-rose) 12%, var(--surface-2));    }

.chip {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--theme-radius-pill);
  background: var(--surface-2);
  border: var(--theme-border-width) solid var(--line-soft);
  font-size: var(--fs-sm);
  color: var(--ink-mid);
  transition: transform var(--dur-snap) var(--ease-spring), background var(--dur-fast) var(--ease-out-soft), color var(--dur-fast) var(--ease-out-soft);
}
.chip:hover { transform: translateY(-1px); background: var(--surface-3); color: var(--ink-high); }
.chip > .dot { width: 8px; height: 8px; background: var(--c, var(--color-primary)); animation: none; box-shadow: none; }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-mid), transparent);
  margin: var(--sp-6) 0;
}

.stat { display: flex; flex-direction: column; gap: var(--sp-1); }
.stat__num {
  font-family: var(--ff-theme-mono);
  font-size: clamp(1.75rem, 1rem + 3vw, 3rem);
  font-weight: 600;
  color: var(--ink-high);
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
}
.stat__label {
  font-family: var(--ff-theme-mono);
  font-size: var(--fs-2xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-low);
}

/* Watermark primitive — big ghosted icon as a card/section background.
 * Parent needs .watermark-host (relative + overflow:hidden). The parent's
 * direct children auto-get z-index:1 so they sit above the watermark. */
.watermark-host { position: relative; overflow: hidden; }
.watermark-host > :not(.watermark) { position: relative; z-index: 1; }
.watermark {
  position: absolute;
  pointer-events: none;
  color: var(--color-primary);
  opacity: 0.07;
  z-index: 0;
  width: 260px; height: 260px;
  transition: opacity var(--dur-base) var(--ease-out-soft),
              transform var(--dur-base) var(--ease-out-soft);
}
.watermark > i, .watermark > svg, .watermark > img { width: 100%; height: 100%; display: block; }
.watermark--xs { width: 120px; height: 120px; }
.watermark--sm { width: 180px; height: 180px; }
.watermark--lg { width: 360px; height: 360px; }
.watermark--xl { width: 520px; height: 520px; }

.watermark--br     { bottom: -16px; right: -16px; }
.watermark--bl     { bottom: -16px; left: -16px; }
.watermark--tr     { top: -16px; right: -16px; }
.watermark--tl     { top: -16px; left: -16px; }
.watermark--center { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.watermark--right-c { top: 50%; right: -80px; transform: translateY(-50%); }
.watermark--left-c  { top: 50%; left: -80px; transform: translateY(-50%); }

.watermark--strong { opacity: 0.14; }
.watermark--faint  { opacity: 0.04; }

/* Tilt + accent variants */
.watermark--tilt     { transform: rotate(-12deg); }
.watermark--center.watermark--tilt { transform: translate(-50%, -50%) rotate(-12deg); }
.watermark--accent { color: var(--color-accent); }
.watermark--ink    { color: var(--ink-high); }

/* Hover — host lifts watermark slightly for a parallax feel */
.watermark-host:hover .watermark { opacity: 0.12; }
.watermark-host:hover .watermark--faint  { opacity: 0.08; }
.watermark-host:hover .watermark--strong { opacity: 0.2; }