/* ============================================
   Extreme Driving Dataset — Tech
   ============================================ */

:root {
  --bg: #06050f;
  --bg-card: #0d0b1e;
  --bg-elevated: #161228;
  --ink: #ede9f8;
  --ink-muted: #8b82a8;
  --accent: #a78bfa;
  --accent-cyan: #f472b6;
  --glow: rgba(139, 92, 246, 0.25);
  --border: #2a2140;
  --radius: 8px;
  --radius-lg: 12px;
  --font: "Outfit", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-weight: 400;
  color: var(--ink);
  background: transparent;
  position: relative;
  overflow-x: hidden;
}

/* ---------- Tech background ---------- */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(ellipse 100% 60% at 50% -10%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 80% 40% at 80% 60%, rgba(244, 114, 182, 0.07) 0%, transparent 45%),
    var(--bg);
}

/* ---------- Ambient smoke / fog (Grok-style) ---------- */
.smoke-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.smoke-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.82;
  will-change: transform;
}

.smoke-blob-1 {
  width: 130%;
  height: 70%;
  top: -30%;
  left: -20%;
  background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.45) 0%, transparent 58%);
  animation: smokeDrift1 10s ease-in-out infinite;
}

.smoke-blob-2 {
  width: 100%;
  height: 60%;
  top: 20%;
  right: -25%;
  background: radial-gradient(ellipse at center, rgba(244, 114, 182, 0.38) 0%, transparent 52%);
  animation: smokeDrift2 11s ease-in-out infinite 1s;
}

.smoke-blob-3 {
  width: 90%;
  height: 55%;
  bottom: -20%;
  left: 10%;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.38) 0%, transparent 52%);
  animation: smokeDrift3 9s ease-in-out infinite 0.5s;
}

.smoke-blob-4 {
  width: 80%;
  height: 50%;
  top: 30%;
  left: -15%;
  background: radial-gradient(ellipse at center, rgba(217, 70, 239, 0.30) 0%, transparent 48%);
  animation: smokeDrift1 12s ease-in-out infinite reverse 2s;
}

.smoke-blob-5 {
  width: 70%;
  height: 45%;
  top: 0;
  right: 0;
  background: radial-gradient(ellipse at center, rgba(244, 114, 182, 0.35) 0%, transparent 50%);
  animation: smokeDrift2 10s ease-in-out infinite 1.5s;
}

/* Rising smoke: large upward (negative Y) + horizontal drift */
@keyframes smokeDrift1 {
  0%   { transform: translate(0, 25%) scale(0.9); opacity: 0.75; }
  25%  { transform: translate(28%, -15%) scale(1.2); opacity: 0.9; }
  50%  { transform: translate(-20%, -45%) scale(1.05); opacity: 0.85; }
  75%  { transform: translate(15%, -70%) scale(1.15); opacity: 0.82; }
  100% { transform: translate(0, 25%) scale(0.9); opacity: 0.75; }
}

@keyframes smokeDrift2 {
  0%   { transform: translate(0, 15%) scale(1); opacity: 0.82; }
  33%  { transform: translate(-35%, -40%) scale(1.25); opacity: 0.9; }
  66%  { transform: translate(25%, -75%) scale(0.95); opacity: 0.78; }
  100% { transform: translate(0, 15%) scale(1); opacity: 0.82; }
}

@keyframes smokeDrift3 {
  0%   { transform: translate(0, 20%) scale(0.95); opacity: 0.8; }
  20%  { transform: translate(30%, -25%) scale(1.15); opacity: 0.88; }
  40%  { transform: translate(-25%, -55%) scale(1.05); opacity: 0.82; }
  60%  { transform: translate(-15%, -85%) scale(1.1); opacity: 0.8; }
  80%  { transform: translate(20%, -50%) scale(0.98); opacity: 0.85; }
  100% { transform: translate(0, 20%) scale(0.95); opacity: 0.8; }
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(42, 33, 64, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 33, 64, 0.4) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* ---------- Header ---------- */
.site-header {
  padding: 2rem 1.5rem 1.75rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(to bottom, rgba(13, 11, 30, 0.9), transparent);
}

.header-inner {
  max-width: 52rem;
  margin: 0 auto;
}

.team-lead {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin: 0 0 0.35rem;
  letter-spacing: 0.02em;
}

.operators {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.site-title {
  font-family: var(--font);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 0.5rem;
  letter-spacing: 0.01em;
}

.site-subtitle {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink-muted);
  margin: 0 0 1.5rem;
}

/* Header action buttons */
.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.2rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
}

.btn-download svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.btn-download:hover {
  background: #79baff;
  box-shadow: 0 0 16px rgba(167, 139, 250, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.btn-outline:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.08);
}

/* ---------- Hero (platform image: constrained, natural proportion) ---------- */
.hero {
  position: relative;
  width: 100%;
  max-width: 56rem;
  margin: 0 auto;
  aspect-ratio: 3 / 2;
  max-height: 20rem;
  overflow: hidden;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 30%, rgba(6, 5, 15, 0.75) 100%);
  pointer-events: none;
}

.hero-scanner {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), rgba(244, 114, 182, 0.9), var(--accent-cyan), transparent);
  box-shadow: 0 0 8px var(--accent-cyan);
  opacity: 0.9;
  animation: scan 4s linear infinite;
}

@keyframes scan {
  0% { top: 0; }
  100% { top: 100%; }
}

/* ---------- Global collaboration CTA (integrated, tech) ---------- */
.collab-cta {
  position: relative;
  margin: 0 auto 2.5rem;
  max-width: 64rem;
  padding: 0 1.5rem;
}

.collab-ambient {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: radial-gradient(ellipse 80% 50% at 50% 30%, rgba(244, 114, 182, 0.12) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
  animation: collabAmbient 8s ease-in-out infinite;
}

@keyframes collabAmbient {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

.collab-glow {
  position: absolute;
  inset: -1px;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent), var(--accent-cyan));
  background-size: 200% 200%;
  animation: collabBorder 5s ease infinite;
  opacity: 0.5;
  z-index: 0;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
}

@keyframes collabBorder {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.collab-inner {
  position: relative;
  z-index: 1;
  padding: 2.25rem 2rem 2.5rem;
  background: linear-gradient(165deg, rgba(13, 11, 30, 0.92) 0%, rgba(6, 5, 15, 0.97) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(42, 33, 64, 0.8);
  border-radius: 14px;
  box-shadow:
    0 0 60px rgba(244, 114, 182, 0.06),
    0 24px 48px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.collab-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 1.25rem;
}

.collab-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: collabPulse 2s ease-in-out infinite;
}

@keyframes collabPulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 10px var(--accent-cyan); }
  50% { opacity: 0.7; transform: scale(1.2); box-shadow: 0 0 16px var(--accent-cyan), 0 0 24px rgba(244, 114, 182, 0.4); }
}

.collab-title {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 1.25rem;
  line-height: 1.4;
  letter-spacing: 0.04em;
}

.collab-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  margin-bottom: 0.35rem;
}

.collab-mission {
  font-size: 1rem;
  color: var(--ink-muted);
  line-height: 1.65;
  margin: 0 0 1.25rem;
  max-width: 52rem;
}

.collab-mission strong {
  color: var(--accent);
}

.collab-assets {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.collab-assets li {
  font-size: 0.9rem;
  color: var(--ink-muted);
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.5;
}

.collab-assets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.collab-inner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 0 0 14px 14px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent), var(--accent-cyan), transparent);
  background-size: 200% 100%;
  opacity: 0.7;
  animation: collabStream 4s linear infinite;
}

@keyframes collabStream {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.collab-interns {
  padding: 0.85rem 1rem;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.5;
  background: rgba(244, 114, 182, 0.05);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 6px 6px 0;
}

.collab-interns strong {
  color: var(--ink);
}

.collab-contact {
  font-size: 0.9rem;
  color: var(--ink);
  margin: 0;
}

.collab-contact a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 500;
}

.collab-contact a:hover {
  text-decoration: underline;
}

/* ---------- Main content ---------- */
.main-content {
  max-width: 64rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.section-head {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.sensor-intro {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.sensor-visual {
  margin-top: 1.25rem;
}

.sensor-visual-frame {
  position: relative;
  width: 100%;
  max-width: 32rem;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.18) 0%, transparent 55%), var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.sensor-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

.sensor-scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), rgba(244, 114, 182, 0.9), var(--accent-cyan), transparent);
  box-shadow: 0 0 10px rgba(244, 114, 182, 0.8);
  opacity: 0.9;
  animation: sensorScan 3.2s linear infinite;
}

@keyframes sensorScan {
  0% { top: 0%; opacity: 0.2; }
  10% { opacity: 0.9; }
  100% { top: 100%; opacity: 0.2; }
}

.sensor-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.sensor-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sensor-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  min-width: 3.5rem;
}

.intro {
  margin-bottom: 2rem;
  text-align: center;
}

.intro-text {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.6;
  max-width: 36rem;
  margin: 0 auto;
}

/* ---------- Condition grid & cards ---------- */
.condition-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 0;
  margin: 0 0 3rem;
}

.condition-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.condition-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--glow);
  border-color: var(--accent);
}

.condition-card:active {
  transform: translateY(-2px) scale(0.99);
  transition-duration: 0.1s;
}

.condition-card.click-animate {
  animation: cardClick 0.5s ease-out;
}

@keyframes cardClick {
  0%   { transform: translateY(-4px) scale(1); }
  30%  { transform: translateY(-4px) scale(0.98); }
  60%  { transform: translateY(-4px) scale(1.02); }
  100% { transform: translateY(-4px) scale(1); }
}

.condition-card:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
}

.condition-card:focus:not(:focus-visible) {
  box-shadow: none;
}

/* Card thumb: fixed aspect ratio, full display */
.card-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-elevated);
}

.card-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.45s cubic-bezier(0.4, 0, 0.2, 1), transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-thumb img:not(.active) {
  opacity: 0;
  pointer-events: none;
}

.card-thumb img.active,
.card-thumb img:only-child {
  opacity: 1;
  z-index: 1;
  transform: translateX(0) scale(1);
}

.condition-card:hover .card-thumb img.active {
  transform: translateX(0) scale(1.04);
}

/* Carousel: scan-line reveal + vertical wipe (high-tech) */
.card-carousel {
  position: relative;
  perspective: 1200px;
}

/* Scan line: runs top→bottom on each switch */
.card-carousel::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 4px;
  top: 0;
  z-index: 10;
  background: linear-gradient(180deg, transparent, var(--accent-cyan), rgba(244, 114, 182, 0.9), var(--accent-cyan), transparent);
  box-shadow: 0 0 12px var(--accent-cyan), 0 0 24px rgba(244, 114, 182, 0.4);
  opacity: 0;
  pointer-events: none;
}

.card-carousel.scan::after {
  animation: scanLine 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes scanLine {
  0% {
    top: 0;
    opacity: 1;
  }
  100% {
    top: 100%;
    opacity: 0.8;
  }
}

/* Brief flash when new frame loads */
.card-carousel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 5;
  background: linear-gradient(180deg, rgba(244, 114, 182, 0.12) 0%, transparent 40%, transparent 60%, rgba(139, 92, 246, 0.08) 100%);
  opacity: 0;
  pointer-events: none;
}

.card-carousel.scan::before {
  animation: scanFlash 0.6s ease-out forwards;
}

@keyframes scanFlash {
  0% { opacity: 0.6; }
  40% { opacity: 0.2; }
  100% { opacity: 0; }
}

.card-carousel img {
  opacity: 0;
  transform: translateZ(0);
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.55s cubic-bezier(0.32, 0.72, 0.38, 1), opacity 0.2s ease;
}

.card-carousel img:first-child {
  opacity: 1;
  clip-path: inset(0 0 0 0);
  z-index: 1;
}

.card-carousel img.active {
  opacity: 1;
  clip-path: inset(0 0 0 0);
  z-index: 2;
}

.card-carousel img.leaving {
  clip-path: inset(100% 0 0 0);
  z-index: 3;
  pointer-events: none;
  transition: clip-path 0.55s cubic-bezier(0.32, 0.72, 0.38, 1);
}

/* card-icon / card-title / card-desc layout handled by .card-body in new styles section */

.condition-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.condition-card:hover::before {
  opacity: 1;
}

/* ---------- Card icon ---------- */
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  color: var(--accent);
  transition: transform var(--transition), color var(--transition);
}

.condition-card:hover .card-icon {
  transform: scale(1.08);
  color: var(--accent-cyan);
}

.condition-card .card-icon svg {
  width: 100%;
  height: 100%;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.01em;
  transition: color var(--transition);
}

.condition-card:hover .card-title {
  color: var(--accent);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--ink-muted);
  line-height: 1.5;
  margin: 0;
}

/* ---------- VLA Demo ---------- */
.vla-demo {
  margin-bottom: 3rem;
}

.vla-desc {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.5;
  margin: 0 0 1.25rem;
  max-width: 40rem;
}

.vla-video-wrap {
  position: relative;
  width: 100%;
  max-width: 48rem;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.vla-video {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: middle;
}

/* ---------- Team ---------- */
.team-section {
  padding: 2rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

.team-org {
  font-size: 1rem;
  color: var(--ink);
  margin: 0 0 0.5rem;
}

.team-people {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.team-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.team-link {
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
}

.team-link:hover {
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.1);
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 1.5rem 1.5rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.site-footer p {
  margin: 0.25rem 0;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.footer-meta {
  font-size: 0.8rem;
  opacity: 0.9;
}

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 28rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 1rem;
}

.modal-text {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.6;
  margin: 0 0 0.75rem;
}

.modal-email {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.modal-email a {
  color: var(--accent);
  text-decoration: none;
}

.modal-email a:hover {
  text-decoration: underline;
}

.modal-license {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin: 0;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.modal-close:hover {
  color: var(--ink);
  background: var(--bg-elevated);
}

/* ---------- Stats bar ---------- */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0 0 2.5rem;
  padding: 1.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 2rem;
  flex: 1 1 8rem;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 500;
  color: var(--accent-cyan);
  line-height: 1;
  letter-spacing: -0.01em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.stat-divider {
  width: 1px;
  height: 2.5rem;
  background: var(--border);
  flex-shrink: 0;
}

@media (max-width: 500px) {
  .stat-divider { display: none; }
  .stat-item { border-bottom: 1px solid var(--border); }
  .stat-item:last-child { border-bottom: none; }
}

/* ---------- Card body / meta ---------- */
.card-body {
  padding: 0 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.condition-card .card-icon {
  margin: 1rem 1.25rem 0.4rem;
}

.condition-card .card-title {
  margin: 0 0 0.35rem;
}

.card-meta {
  display: inline-block;
  margin-top: auto;
  padding-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  border-top: 1px solid var(--border);
}

.card-meta-highlight {
  color: var(--accent-cyan);
}

/* ---------- Video demo section ---------- */
.demo-section {
  margin-bottom: 3rem;
}

.demo-desc {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.55;
  margin: 0 0 1.5rem;
  max-width: 44rem;
}

.demo-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.demo-tab {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--ink-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.demo-tab:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.08);
}

.demo-tab.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(244, 114, 182, 0.08);
  box-shadow: 0 0 10px rgba(244, 114, 182, 0.15);
}

.demo-player-wrap {
  position: relative;
  width: 100%;
  max-width: 52rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  margin-bottom: 0.75rem;
}

.demo-video {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: middle;
}

.demo-clips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.demo-clip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--ink-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  letter-spacing: 0.06em;
}

.demo-clip:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.demo-clip.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.1);
}

/* ---------- Citation ---------- */
.citation-section {
  margin-bottom: 2rem;
}

.citation-block {
  margin: 0;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.citation-block code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.7;
  white-space: pre;
}

/* ---------- Modal extras ---------- */
.modal-sample {
  margin: 0 0 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  overflow-x: auto;
  white-space: nowrap;
}