/* ═══════════════════════════════════════════════════════
   PickMoment project page — "exposure" dark theme
   Distinct from PRISM (navy hero + yellow) and ODDR (white + orange).
   Class names used by static/js/pickmoment.js are kept as-is.
   ═══════════════════════════════════════════════════════ */

:root {
  --bg: #0a0a0f;
  --bg-2: #101018;
  --card: #15151f;
  --card-2: #1b1b27;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #ededf2;
  --text-2: #c4c4d0;
  --muted: #8d8d9f;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --accent: #8b9cff;
  --grad: linear-gradient(90deg, var(--cyan), var(--violet));
  --maxw: 1120px;
  --textw: 760px;
  --radius: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-2);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--text); text-decoration: none; }
img, video, canvas { max-width: 100%; }
strong, b { color: var(--text); font-weight: 600; }
em { color: var(--text); }
::selection { background: rgba(139, 156, 255, 0.35); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.narrow { max-width: var(--textw); margin-left: auto; margin-right: auto; }

h1, h2, h3, .display { font-family: 'Space Grotesk', 'Inter', sans-serif; color: var(--text); letter-spacing: -0.02em; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-brand { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--muted); transition: color .15s; }
.nav-links a:hover { color: var(--text); }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 120px 0 96px;
  border-bottom: 1px solid var(--line);
}
/* motion-streak backdrop: blurred horizontal light trails */
.hero::before {
  content: ""; position: absolute; inset: -20% -10%;
  background:
    radial-gradient(40% 55% at 18% 30%, rgba(34, 211, 238, 0.20), transparent 70%),
    radial-gradient(45% 60% at 85% 20%, rgba(167, 139, 250, 0.22), transparent 70%),
    repeating-linear-gradient(90deg, transparent 0 90px, rgba(255,255,255,0.025) 90px 91px);
  filter: blur(2px);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; top: 58%; height: 180px;
  background: linear-gradient(90deg, transparent, rgba(34,211,238,0.10) 25%, rgba(167,139,250,0.14) 60%, transparent);
  filter: blur(40px); transform: skewY(-4deg);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-2); margin: 0 0 24px;
}
.eyebrow .rec { width: 8px; height: 8px; border-radius: 50%; background: #ff4d6d; box-shadow: 0 0 12px #ff4d6d; }
.hero h1 {
  font-size: clamp(64px, 11vw, 132px); font-weight: 700;
  line-height: 0.92; letter-spacing: -0.05em; margin: 0; color: #fff;
}
.hero h1 .grad {
  background: linear-gradient(95deg, var(--cyan) 0%, var(--accent) 55%, var(--violet) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .subtitle {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(20px, 2.6vw, 30px); font-weight: 500; line-height: 1.3;
  color: var(--text-2); margin: 24px 0 0; max-width: 24em; letter-spacing: -0.015em;
}
.authors { margin-top: 44px; font-size: 17px; color: var(--text); font-weight: 500; }
.authors a { border-bottom: 1px solid var(--line-2); transition: border-color .15s; }
.authors a:hover { border-color: var(--text); }
.affil { margin-top: 4px; font-size: 15px; color: var(--muted); }
.affil a { color: var(--text-2); border-bottom: 1px solid var(--line-2); }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 20px; border-radius: 999px;
  font-size: 15px; font-weight: 600; color: var(--text);
  border: 1px solid var(--line-2); background: rgba(255,255,255,0.03);
  transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.3); }
.btn-primary { background: #fff; color: #0a0a0f; border-color: #fff; }
.btn-primary:hover { background: #e6e6ee; border-color: #e6e6ee; }
.btn.is-disabled { opacity: 0.4; pointer-events: none; }
.btn .soon { font-size: 12px; font-weight: 500; color: var(--muted); }

/* ---------- film-strip divider (sprocket holes) ---------- */
.filmstrip {
  height: 22px; background: #000;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, transparent 0 14px, rgba(255,255,255,0.13) 14px 28px, transparent 28px 40px);
  background-size: 40px 8px; background-repeat: repeat-x; background-position: 0 center;
}

/* ---------- sections ---------- */
.section { padding: 112px 0; border-bottom: 1px solid var(--line); }
.section.alt { background: var(--bg-2); }
.kicker {
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin: 0 0 14px;
}
.section h2 { font-size: clamp(32px, 4.4vw, 52px); font-weight: 700; line-height: 1.08; margin: 0 0 22px; letter-spacing: -0.035em; }
.section h3 { font-size: 22px; font-weight: 600; margin: 72px 0 18px; }
.section p { margin: 0 0 16px; }
.lead { font-size: 18px; color: var(--text-2); line-height: 1.75; }

/* ---------- figures ---------- */
.fig { margin: 40px 0 0; }
.fig-light {
  background: #fff; border-radius: var(--radius); padding: 18px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.45), 0 0 0 1px var(--line);
}
.fig-light img { display: block; width: 100%; height: auto; }
.fig figcaption, .comparison-caption { margin-top: 16px; font-size: 14.5px; color: var(--muted); line-height: 1.65; }

/* ---------- Pick-a-Moment demo ---------- */
.pm-demo {
  margin-top: 40px;
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line-2); border-radius: 22px;
  padding: 22px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.5), 0 0 0 1px rgba(139,156,255,0.06) inset;
}
.pm-demo-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.pm-tabs { display: inline-flex; flex-wrap: wrap; background: rgba(255,255,255,0.05); border: 1px solid var(--line); border-radius: 12px; padding: 4px; gap: 4px; }
.pm-tab {
  border: 0; background: transparent; cursor: pointer;
  padding: 7px 14px; border-radius: 9px;
  font: 600 14px 'Inter', sans-serif; color: var(--muted);
  transition: background .15s, color .15s;
}
.pm-tab:hover { color: var(--text); }
.pm-tab.active { background: rgba(255,255,255,0.12); color: var(--text); }
.pm-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(251, 191, 36, 0.12); color: #fbbf24; border: 1px solid rgba(251,191,36,0.25);
}
.pm-badge.is-real { background: rgba(34, 211, 238, 0.10); color: var(--cyan); border-color: rgba(34,211,238,0.28); }

.thumb-row { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.thumb {
  width: 88px; height: 50px; object-fit: cover; cursor: pointer;
  border-radius: 8px; border: 2px solid transparent; opacity: 0.45;
  transition: opacity .2s, border-color .2s, transform .2s;
}
.thumb:hover { opacity: 0.8; transform: translateY(-1px); }
.thumb.active { opacity: 1; border-color: var(--accent); }

.pm-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pm-panel { position: relative; border-radius: 12px; overflow: hidden; background: #000; aspect-ratio: 16 / 9; }
.pm-panel img, .pm-panel canvas { display: block; width: 100%; height: 100%; object-fit: contain; }
.result-label {
  position: absolute; left: 10px; bottom: 10px; z-index: 2;
  padding: 4px 10px; border-radius: 7px;
  font-size: 12.5px; font-weight: 600; color: #fff;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.pm-panel .pm-query {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  padding: 4px 10px; border-radius: 7px; font-size: 12.5px; font-weight: 600; color: #0a0a0f;
  background: var(--grad);
}
.pm-panel .pm-query:empty { display: none; }

.pm-timeline-wrap { margin: 22px 0 6px; }
.pm-timeline {
  position: relative; height: 44px; border-radius: 12px; cursor: pointer;
  touch-action: none; user-select: none; -webkit-user-select: none;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0 1px, transparent 1px 3.125%),
    linear-gradient(90deg, rgba(34,211,238,0.14), rgba(167,139,250,0.16));
  border: 1px solid var(--line-2);
}
.pm-tick { position: absolute; top: 32px; width: 1px; height: 10px; background: rgba(255,255,255,0.28); pointer-events: none; }
.pm-range {
  position: absolute; top: 0; height: 100%; border-radius: 10px; pointer-events: none;
  background: linear-gradient(90deg, rgba(34,211,238,0.35), rgba(167,139,250,0.40));
  border-left: 2px solid var(--cyan); border-right: 2px solid var(--violet);
}
.pm-handle {
  position: absolute; top: 50%; width: 24px; height: 24px; margin: -12px 0 0 -12px; z-index: 2;
  border-radius: 50%; background: #fff; cursor: grab;
  box-shadow: 0 0 0 4px rgba(139,156,255,0.35), 0 6px 18px rgba(0,0,0,0.5);
}
.pm-handle:active { cursor: grabbing; }
.pm-handle:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.pm-timeline-label { display: flex; justify-content: space-between; margin-top: 8px; font-size: 12.5px; color: var(--muted); }

.pm-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; }
.pm-btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line-2); background: rgba(255,255,255,0.04); color: var(--text-2);
  border-radius: 9px; padding: 7px 13px; cursor: pointer;
  font: 500 13.5px 'Inter', sans-serif; transition: background .15s, color .15s, border-color .15s;
}
.pm-btn:hover { background: rgba(255,255,255,0.09); color: var(--text); }
.pm-btn.is-primary { background: #fff; border-color: #fff; color: #0a0a0f; font-weight: 600; }
.pm-btn.is-primary:hover { background: #e6e6ee; }
.pm-readout { margin-left: auto; font-size: 13.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.pm-demo-note { margin: 14px 0 0 !important; font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* placeholder when an asset is missing */
.pm-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  width: 100%; min-height: 200px; aspect-ratio: 16 / 9; padding: 16px; text-align: center;
  border: 1px dashed var(--line-2); border-radius: 12px; color: var(--muted); font-size: 14px;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,0.02) 0 12px, transparent 12px 24px);
}
.pm-placeholder i { font-size: 22px; opacity: 0.6; }
.pm-placeholder code { color: var(--muted); font-size: 12px; background: none; }

/* ---------- stats ---------- */
.pm-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 56px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pm-stat { padding: 32px 24px 28px 0; }
.pm-stat + .pm-stat { padding-left: 24px; border-left: 1px solid var(--line); }
.pm-stat .num {
  font-family: 'Space Grotesk', sans-serif; font-size: clamp(40px, 5vw, 60px); font-weight: 700;
  letter-spacing: -0.04em; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pm-stat .lbl { margin-top: 12px; font-size: 14px; color: var(--muted); line-height: 1.5; }

/* ---------- key idea ---------- */
.formula {
  margin: 32px 0; padding: 26px 20px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line); text-align: center; color: var(--text);
  font-size: 1.15rem; overflow-x: auto;
}
.pm-query-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.pm-query-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; transition: border-color .2s, transform .2s;
}
.pm-query-card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.q-title { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 17px; color: var(--text); margin-bottom: 10px; }
.q-title i { color: var(--cyan); }
.q-formula { color: var(--text); margin: 6px 0 12px; font-size: 1.02rem; overflow-x: auto; }
.q-desc { font-size: 14.5px; color: var(--muted); line-height: 1.6; }

.key-insight {
  margin-top: 40px; padding: 24px 28px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(34,211,238,0.07), rgba(167,139,250,0.08));
  border: 1px solid rgba(139,156,255,0.22);
  font-size: 15.5px; color: var(--text-2); line-height: 1.75;
}
.key-insight-label { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 17px; color: var(--text); margin-bottom: 8px; }

/* ---------- method ---------- */
.method-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.method-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.method-card-title { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 17px; color: var(--text); margin-bottom: 10px; }
.method-card-desc { font-size: 14.5px; color: var(--muted); line-height: 1.65; overflow-x: auto; }

/* ---------- video ---------- */
#pm-videos { margin-top: 36px; }
#pm-videos > .pm-tabs { margin-bottom: 14px !important; }
.pm-video-wrap { border-radius: 14px; overflow: hidden; background: #000; border: 1px solid var(--line-2); box-shadow: 0 30px 80px rgba(0,0,0,0.5); }
.pm-video-wrap video { display: block; width: 100%; height: auto; }
.pm-video-cols { display: grid; margin-top: 10px; text-align: center; font-size: 13.5px; font-weight: 600; color: var(--muted); }
.pm-video-cols .is-ours { color: var(--cyan); }

/* ---------- before/after slider ---------- */
#pm-deblur { margin-top: 36px; }
.ba-slider {
  position: relative; width: 100%; overflow: hidden; cursor: col-resize;
  border-radius: 14px; border: 1px solid var(--line-2); background: #000;
  user-select: none; -webkit-user-select: none; touch-action: none;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.ba-after { display: block; width: 100%; height: auto; }
.ba-before { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; clip-path: inset(0 50% 0 0); z-index: 2; }
.ba-handle { position: absolute; top: 0; left: 50%; width: 0; height: 100%; z-index: 3; display: flex; flex-direction: column; align-items: center; pointer-events: none; }
.ba-handle-line { flex: 1; width: 2px; background: #fff; box-shadow: 0 0 8px rgba(0,0,0,0.5); }
.ba-handle-circle {
  width: 38px; height: 38px; flex-shrink: 0; border-radius: 50%; background: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}
.ba-handle-circle span { font-size: 15px; font-weight: 700; color: #0a0a0f; letter-spacing: 3px; line-height: 1; }
.ba-slider::before, .ba-slider::after {
  position: absolute; bottom: 12px; z-index: 4; pointer-events: none;
  padding: 4px 11px; border-radius: 7px; font-size: 12.5px; font-weight: 600; color: #fff;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.ba-slider::before { content: attr(data-label-left); left: 12px; }
.ba-slider::after { content: attr(data-label-right); right: 12px; background: rgba(34,211,238,0.85); color: #0a0a0f; }

/* ---------- tables ---------- */
.pm-table-wrap { overflow-x: auto; margin: 16px 0 10px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
table.pm-table { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
table.pm-table th, table.pm-table td { padding: 11px 14px; text-align: center; white-space: nowrap; border-bottom: 1px solid var(--line); }
table.pm-table thead th { color: var(--text); font-weight: 600; background: rgba(255,255,255,0.03); font-size: 13px; }
table.pm-table tbody tr:last-child td { border-bottom: 0; }
table.pm-table td { color: var(--text-2); }
table.pm-table td:first-child, table.pm-table th:first-child { text-align: left; }
table.pm-table tr.is-ours td { background: rgba(139,156,255,0.10); color: var(--text); font-weight: 600; }
table.pm-table tr.is-ours td:first-child { box-shadow: inset 3px 0 0 var(--cyan); }
table.pm-table strong { color: var(--cyan); }
.pm-table-caption { font-size: 14px; color: var(--muted); line-height: 1.65; margin: 0 0 8px; }

/* ---------- citation ---------- */
.citation-block { position: relative; margin-top: 28px; }
.citation-block pre {
  margin: 0; padding: 26px 28px; border-radius: var(--radius); overflow-x: auto;
  background: #000; border: 1px solid var(--line-2); color: var(--text-2);
  font: 14px/1.75 'JetBrains Mono', ui-monospace, monospace;
}
.copy-btn {
  position: absolute; top: 14px; right: 14px;
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line-2);
  background: rgba(255,255,255,0.06); color: var(--text); font: 600 13px 'Inter', sans-serif;
  transition: background .15s;
}
.copy-btn:hover { background: rgba(255,255,255,0.12); }

footer { padding: 56px 0 64px; font-size: 13px; color: var(--muted); }
footer a { color: var(--text-2); border-bottom: 1px solid var(--line-2); }

/* ---------- MathJax on dark ---------- */
mjx-container { color: inherit; }

/* ---------- fade-in (JS adds .visible) ---------- */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.4,0,.2,1), transform .7s cubic-bezier(.4,0,.2,1); }
.fade-in.visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .pm-panels, .pm-query-grid, .method-cards { grid-template-columns: 1fr; }
  .pm-stats { grid-template-columns: 1fr; }
  .pm-stat + .pm-stat { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .pm-readout { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .nav-links { display: none; }
  .hero { padding: 80px 0 64px; }
  .section { padding: 80px 0; }
  .pm-demo { padding: 14px; border-radius: 16px; }
  .thumb { width: 64px; height: 38px; }
  .fig-light { padding: 10px; }
}

/* first sub-heading right after a section title */
.section h2 + h3 { margin-top: 36px; }