/* VividSea, marketing site
   Abyss (dark) palette, editorial cinematic
*/

:root {
  --bg:        #04060C;
  --bg2:       #0A1220;
  --bg3:       #141E33;
  --surface:   #0F1726;
  --border:    rgba(140,180,240,0.10);
  --border-2:  rgba(140,180,240,0.18);
  --text:      #F5F8FF;
  --text-dim:  rgba(200,215,240,0.68);
  --text-mute: rgba(170,190,220,0.42);
  --accent:    #00E5D4;
  --accent-2:  #0091A6;
  --accent-dim:rgba(0,229,212,0.14);
  --accent-on: #00121A;
  --pro:       #FFB547;
  --deep:      #0047B3;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  --font-ui:      'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-display: 'Instrument Serif', 'Times New Roman', serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  --maxw: 1200px;
  --pad:  clamp(20px, 4vw, 40px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

/* ─── Layout ───────────────────────────── */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ─── Nav ──────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 14px 0;
  background: rgba(4,6,12,0.6);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: radial-gradient(circle at 30% 20%, #0A3B5C, #031828);
  position: relative;
  overflow: hidden;
}
.brand-mark::after {
  content: '';
  position: absolute;
  inset: 28% 28%;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  background: radial-gradient(circle, transparent 30%, rgba(0,229,212,0.4));
}
.nav-links {
  display: flex; gap: 28px; align-items: center;
  font-size: 14px; font-weight: 500;
  color: var(--text-dim);
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--accent-on) !important;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform .15s ease;
}
.nav-cta:hover { transform: translateY(-1px); }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-links.cta-only { display: flex; }
  .nav-links.cta-only > :not(.nav-cta) { display: none; }
}

/* ─── Hero ─────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.55) saturate(1.15);
}
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 50% 30%, transparent 0%, rgba(4,6,12,0.5) 60%),
    linear-gradient(180deg, rgba(4,6,12,0.3) 0%, rgba(4,6,12,0.95) 80%);
}
.hero-glow {
  position: absolute;
  top: 30%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,229,212,0.1), transparent 60%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}
.hero-eyebrow {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-size: 18px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 24px;
  opacity: 0.9;
}
.hero-headline {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 120px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 28px;
  text-wrap: balance;
}
.hero-headline em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--text-dim);
  max-width: 620px;
  line-height: 1.45;
  margin: 0 0 44px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
  text-wrap: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-on);
}
.btn-primary:hover { transform: translateY(-1px); background: #1FF0DF; }
.btn-ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--border-2);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.appstore-btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 10px 22px;
  background: #000;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 12px;
  font-family: var(--font-ui);
  white-space: nowrap;
  text-decoration: none;
}
.appstore-btn > span { display: inline-flex; flex-direction: column; line-height: 1.1; text-align: left; }
.appstore-btn .top { font-size: 11px; opacity: 0.8; letter-spacing: 0.02em; }
.appstore-btn .bot { font-size: 18px; font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }

.hero-meta {
  margin-top: 60px;
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--text-mute);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.hero-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }

/* ─── Section primitives ───────────────── */
section { position: relative; }
.section {
  padding: clamp(80px, 12vw, 140px) 0;
}
.section-head {
  margin-bottom: 64px;
  max-width: 760px;
}
.kicker {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-size: 16px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  text-wrap: balance;
}
.section-title em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.section-sub {
  font-size: 19px;
  color: var(--text-dim);
  line-height: 1.55;
  max-width: 600px;
}

/* ─── Before/After slider ──────────────── */
.compare {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  cursor: ew-resize;
  user-select: none;
  -webkit-user-select: none;
  border: 1px solid var(--border-2);
  box-shadow: 0 30px 80px -10px rgba(0,229,212,0.15), 0 60px 140px -30px rgba(0,0,0,0.7);
}
.compare-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.compare-after {
  clip-path: inset(0 0 0 50%);
  transition: none;
}
.compare-after.no-trans { transition: none; }
.compare-divider {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 0 24px rgba(0,229,212,0.6);
}
.compare-handle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-on);
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
  box-shadow: 0 6px 20px rgba(0,0,0,0.5), 0 0 0 4px rgba(4,6,12,0.7);
}
.compare-label {
  position: absolute;
  top: 18px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  padding: 6px 10px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  border-radius: 4px;
  color: #fff;
  pointer-events: none;
}
.compare-label.before { left: 18px; }
.compare-label.after  { right: 18px; color: var(--accent); }

/* ─── Features ─────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

.feature {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease;
}
.feature:hover {
  transform: translateY(-3px);
  border-color: var(--border-2);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-dim);
  color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}
.feature h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.feature p {
  color: var(--text-dim);
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
}
.feature.tall {
  grid-row: span 2;
  display: flex; flex-direction: column;
}
.feature-image {
  margin-top: 24px;
  flex: 1;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 200px;
}
.feature-image img { width: 100%; height: 100%; object-fit: cover; }

/* ─── Filter gallery ───────────────────── */
.filters-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .filters-strip { grid-template-columns: repeat(2, 1fr); } }
.filter-card {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform .25s ease;
}
.filter-card:hover { transform: translateY(-3px); }
.filter-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: filter .3s ease;
}
.filter-card .meta {
  position: absolute;
  left: 12px; right: 12px; bottom: 12px;
  z-index: 2;
}
.filter-card .name {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
}
.filter-card .cat {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2px;
}
.filter-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.85) 100%);
}

/* LUT preview filters, simulate LUTs via CSS */
.lut-reef    { filter: saturate(1.5) hue-rotate(-12deg) contrast(1.1) brightness(1.05); }
.lut-tropic  { filter: saturate(1.4) contrast(1.15) brightness(1.08) hue-rotate(-5deg); }
.lut-cave    { filter: saturate(1.2) contrast(1.25) brightness(0.92) hue-rotate(8deg); }
.lut-ocean   { filter: saturate(1.3) contrast(1.1) hue-rotate(-8deg); }
.lut-fresh   { filter: saturate(0.9) contrast(1.1) brightness(1.05) hue-rotate(15deg); }

/* ─── Pricing ──────────────────────────── */
.pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  max-width: 900px;
  margin: 0 auto;
}
@media (max-width: 720px) { .pricing { grid-template-columns: 1fr; } }
.plan {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.plan.pro {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(0,229,212,0.06), var(--surface));
  box-shadow: 0 30px 80px -20px rgba(0,229,212,0.2);
}
.plan-badge {
  position: absolute;
  top: -12px; right: 28px;
  padding: 6px 12px;
  background: var(--accent);
  color: var(--accent-on);
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.plan-name {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 32px;
  margin: 0 0 8px;
  color: var(--accent);
}
.plan-tag {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 24px;
}
.plan-price {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 32px;
}
.plan-price .num {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.plan-price .unit {
  font-size: 15px;
  color: var(--text-mute);
}
.plan ul {
  list-style: none;
  padding: 0; margin: 0 0 32px;
  display: flex; flex-direction: column; gap: 14px;
}
.plan li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.45;
}
.plan li::before {
  content: '';
  flex-shrink: 0;
  width: 18px; height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--accent-dim);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10' fill='none'><path d='M2 5l2 2 4-4' stroke='%2300E5D4' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-position: center;
  background-repeat: no-repeat;
}
.plan li.muted { color: var(--text-mute); }
.plan li.muted::before { background: rgba(255,255,255,0.05); background-image: none; }

/* ─── FAQ ──────────────────────────────── */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex; flex-direction: column;
  border-top: 1px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 26px 0;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 19px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  letter-spacing: -0.005em;
}
.faq-q:hover { color: var(--accent); }
.faq-q .plus {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, transform .2s;
}
.faq-item.open .faq-q .plus {
  background: var(--accent);
  color: var(--accent-on);
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.6;
}
.faq-item.open .faq-a {
  max-height: 400px;
}
.faq-a-inner {
  padding-bottom: 26px;
  padding-right: 60px;
}

/* ─── Final CTA ────────────────────────── */
.final-cta {
  position: relative;
  margin: 60px var(--pad);
  border-radius: var(--radius-xl);
  overflow: hidden;
  padding: clamp(60px, 10vw, 120px);
  text-align: center;
  isolation: isolate;
}
.final-cta::before {
  content: '';
  position: absolute; inset: 0; z-index: -2;
  background: url('photos/3.jpg') center/cover;
  filter: brightness(0.4) saturate(1.2);
}
.final-cta::after {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse at center, transparent 0%, rgba(4,6,12,0.7) 80%),
    linear-gradient(180deg, rgba(4,6,12,0.4), rgba(4,6,12,0.9));
}
.final-cta h2 {
  font-size: clamp(36px, 6vw, 76px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
  margin: 0 0 20px;
}
.final-cta h2 em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.final-cta p {
  color: var(--text-dim);
  font-size: 19px;
  max-width: 540px;
  margin: 0 auto 36px;
}

/* ─── Footer ───────────────────────────── */
footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
  color: var(--text-mute);
  font-size: 14px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
@media (max-width: 720px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
.foot-brand p {
  color: var(--text-dim);
  max-width: 320px;
  margin: 16px 0 0;
  line-height: 1.5;
}
.foot-col h5 {
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 18px;
}
.foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.foot-col a:hover { color: var(--text); }
.foot-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
}

/* ─── Sub-page (legal / support) ───────── */
.page {
  padding: 140px 0 100px;
  max-width: 760px;
  margin: 0 auto;
}
.page h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  line-height: 1.05;
}
.page h1 em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.page .meta {
  color: var(--text-mute);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 50px;
}
.page h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 50px 0 14px;
  letter-spacing: -0.01em;
}
.page h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 8px;
}
.page p, .page li {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.7;
}
.page ul { padding-left: 22px; }
.page li { margin-bottom: 6px; }
.page a { color: var(--accent); }
.page a:hover { text-decoration: underline; }

/* Marquee, filter names */
.marquee {
  margin: 60px 0;
  overflow: hidden;
  position: relative;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
  -webkit-mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
          mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex;
  gap: 64px;
  white-space: nowrap;
  animation: scroll 40s linear infinite;
  width: max-content;
}
.marquee-item {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 28px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.marquee-item .dot {
  display: inline-block;
  margin-left: 64px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
}
@keyframes scroll {
  to { transform: translateX(-50%); }
}