/* ═══════════════════════════════════════════════
   DISCOVER — Operator Product Gallery
   52 STUDIO
   ═══════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --bg:          oklch(0.13 0 0);
  --bg-elevated: oklch(0.16 0 0);
  --fg:          oklch(0.95 0 0);
  --fg-muted:    oklch(0.55 0 0);
  --fg-dim:      oklch(0.35 0 0);
  --border:      oklch(0.22 0 0);
  --radius:      12px;
  --radius-lg:   20px;
  --font-body:   'DM Sans', system-ui, sans-serif;
  --font-display:'Instrument Serif', Georgia, serif;
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  overflow-x: hidden;
}

/* ── Fixed Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  pointer-events: none;
  mix-blend-mode: difference;
}

.header-wordmark {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--fg);
  opacity: 0.9;
}

.header-divider {
  width: 1px;
  height: 14px;
  background: var(--fg-dim);
}

.header-label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ── Progress Track ── */
.progress-track {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  background: oklch(0.18 0 0);
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--fg);
  opacity: 0.4;
  transition: width 0.1s linear;
}

/* ── Gallery (scroll-snap container) ── */
.gallery {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  -webkit-overflow-scrolling: touch;
}

/* ── Card Base ── */
.card {
  position: relative;
  height: 100vh;
  width: 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* ── Card Content ── */
.card__content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  gap: 8px;
}

.card__meta {
  margin-bottom: 12px;
}

.card__number {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

.card__title {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 96px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.card.is-active .card__title {
  opacity: 1;
  transform: translateY(0);
}

.card__tagline {
  font-family: var(--font-body);
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 400;
  color: var(--fg-muted);
  margin-top: 4px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out) 0.1s, transform 0.8s var(--ease-out) 0.1s;
}

.card.is-active .card__tagline {
  opacity: 1;
  transform: translateY(0);
}

.card__url {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--fg-dim);
  text-decoration: none;
  margin-top: 16px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s var(--ease-out) 0.2s,
              transform 0.8s var(--ease-out) 0.2s,
              color 0.3s ease,
              border-color 0.3s ease;
  pointer-events: auto;
}

.card.is-active .card__url {
  opacity: 1;
  transform: translateY(0);
}

.card__url:hover {
  color: var(--fg);
  border-color: var(--fg-muted);
}

.card__url i {
  font-size: 14px;
  transition: transform 0.3s var(--ease-out);
}

.card__url:hover i {
  transform: translate(2px, -2px);
}

/* ── Video Layer ── */
.card__video-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.card__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.card__video.is-loaded {
  opacity: 1;
}

/* Placeholder (shows accent color as intentional ambient glow) */
.card__video-placeholder {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 50% 40% at 50% 50%,
      color-mix(in oklch, var(--accent) 18%, transparent) 0%,
      color-mix(in oklch, var(--accent) 6%, transparent) 50%,
      transparent 100%
    ),
    radial-gradient(
      ellipse 120% 80% at 50% 60%,
      color-mix(in oklch, var(--accent) 4%, transparent) 0%,
      var(--bg) 100%
    );
  transition: opacity 0.6s ease;
}

.card__video.is-loaded ~ .card__video-placeholder {
  opacity: 0;
  pointer-events: none;
}

/* Vignette overlay on all product cards */
.card[data-product]::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 5;
  background: radial-gradient(
    ellipse 100% 100% at 50% 50%,
    transparent 30%,
    oklch(0.13 0 0 / 0.7) 100%
  );
  pointer-events: none;
}

/* ── Hero Card ── */
.card--hero {
  background: var(--bg);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(56px, 14vw, 120px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fg);
  animation: fadeUp 1s var(--ease-out) 0.2s both;
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 400;
  color: var(--fg-muted);
  margin-top: 8px;
  animation: fadeUp 1s var(--ease-out) 0.4s both;
}

.hero__scroll-hint {
  margin-top: 48px;
  animation: fadeUp 1s var(--ease-out) 0.6s both;
}

.hero__scroll-hint i {
  font-size: 24px;
  color: var(--fg-dim);
  animation: pulse 2s ease-in-out infinite;
}

/* ── Closing Card ── */
.card--closing {
  background: var(--bg);
}

.closing__wordmark {
  font-family: var(--font-display);
  font-size: clamp(40px, 10vw, 80px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.card--closing.is-active .closing__wordmark {
  opacity: 1;
  transform: translateY(0);
}

.closing__cta {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
  margin-top: 16px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s var(--ease-out) 0.15s, transform 0.8s var(--ease-out) 0.15s;
}

.card--closing.is-active .closing__cta {
  opacity: 1;
  transform: translateY(0);
}

/* ── Accent Glow (per-product subtle bottom edge) ── */
.card[data-product]::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  z-index: 20;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.card[data-product="capture"]::before { background: oklch(0.75 0.15 70); }
.card[data-product="rewind"]::before  { background: oklch(0.70 0.12 195); }
.card[data-product="forge"]::before   { background: oklch(0.72 0.18 50); }
.card[data-product="identify"]::before{ background: oklch(0.95 0 0); }
.card[data-product="storage"]::before { background: oklch(0.68 0.10 155); }

.card[data-product].is-active::before {
  opacity: 0.4;
}

/* ── Animations ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 0.7;
    transform: translateY(6px);
  }
}

/* ── Responsive ── */
@media (min-width: 768px) {
  .header {
    padding: 24px 40px;
  }

  .header-wordmark {
    font-size: 20px;
  }

  .card__url {
    font-size: 15px;
  }
}

@media (min-width: 1200px) {
  .header {
    padding: 28px 48px;
  }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .gallery {
    scroll-behavior: auto;
  }
}

/* ── Selection ── */
::selection {
  background: oklch(0.40 0 0);
  color: var(--fg);
}

/* ── Scrollbar ── */
.gallery::-webkit-scrollbar {
  display: none;
}

.gallery {
  scrollbar-width: none;
  -ms-overflow-style: none;
}