/* ============ CaliLens design tokens (mirrors lib/constants.ts) ============ */
:root {
  --surface-primary: #0a0a0b;
  --surface-secondary: #151517;
  --surface-tertiary: #1e1e21;
  --border-default: #2a2a2e;
  --text-primary: #ededef;
  --text-secondary: #8e8e93;
  --text-tertiary: #5a5a5e;
  --accent: #00c9a7;
  --accent-bright: #80ffe8;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #ef4444;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--surface-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.1px;
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: rgba(0, 201, 167, 0.35); }

/* ============ Atmosphere ============ */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 60% 45% at 75% 8%, rgba(0, 201, 167, 0.10), transparent 65%),
    radial-gradient(ellipse 50% 40% at 15% 95%, rgba(0, 201, 167, 0.05), transparent 60%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(237, 237, 239, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 237, 239, 0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, black, transparent 80%);
}

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 64px);
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(42, 42, 46, 0.6);
}

.brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  text-decoration: none;
}
.brand span { color: var(--accent); }
.brand.small { font-size: 17px; }

.nav-links { display: flex; gap: 28px; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 13px;
  color: var(--surface-primary);
  background: var(--accent);
  padding: 9px 18px;
  border-radius: 99px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.2s;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(0, 201, 167, 0.35);
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .chip-2 { top: 24%; right: 4px; }
  .chip-3 { bottom: 150px; }
}

/* ============ Hero ============ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(56px, 9vh, 110px) clamp(20px, 5vw, 64px) clamp(48px, 8vh, 96px);
  max-width: 1240px;
  margin: 0 auto;
}

.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 2.5px;
  color: var(--accent);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(44px, 6.5vw, 76px);
  line-height: 1.02;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero h1 em, .cta-final h2 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lede {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 46ch;
  margin-bottom: 36px;
}

/* Store badges */
.store-row { display: flex; gap: 14px; flex-wrap: wrap; }
.store-row.center { justify-content: center; }

.store-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-secondary);
  border: 1px solid var(--border-default);
  border-radius: 14px;
  padding: 11px 20px;
  color: var(--text-primary);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}
.store-badge span {
  display: flex;
  flex-direction: column;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.15;
}
.store-badge small {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.4px;
  color: var(--text-secondary);
  text-transform: uppercase;
}
.store-badge:not(.disabled) {
  border-color: rgba(0, 201, 167, 0.45);
}
.store-badge:not(.disabled):hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.store-badge.disabled {
  cursor: default;
  opacity: 0.6;
}

.store-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ============ Hero visual ============ */
.hero-visual { position: relative; }

.phone-frame {
  position: relative;
  background: linear-gradient(165deg, var(--surface-secondary), #101012);
  border: 1px solid var(--border-default);
  border-radius: 28px;
  padding: 36px 8px 88px;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(237, 237, 239, 0.05);
  overflow: visible;
  animation: float 7s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Skeleton SVG */
.skeleton { width: 100%; height: auto; display: block; }

.skeleton .bar, .skeleton .bar-post {
  stroke: var(--text-tertiary);
  stroke-width: 5;
  stroke-linecap: round;
}

.skeleton .silhouette {
  opacity: 0;
  animation: fadeIn 0.9s ease 0.25s forwards;
}
.skeleton .silhouette .limb {
  stroke: #3d3d44;
  stroke-linecap: round;
}
.skeleton .silhouette .limb.far { stroke: #2c2c31; }
.skeleton .silhouette .arm { stroke-width: 13; }
.skeleton .silhouette .far-arm { stroke-width: 11; }
.skeleton .silhouette .neck { stroke-width: 13; }
.skeleton .silhouette .torso { stroke-width: 30; }
.skeleton .silhouette .thigh { stroke-width: 21; }
.skeleton .silhouette .far-thigh { stroke-width: 19; }
.skeleton .silhouette .shin { stroke-width: 14; }
.skeleton .silhouette .far-shin { stroke-width: 12; }
.skeleton .silhouette .foot { stroke-width: 9; }
.skeleton .silhouette .far-foot { stroke-width: 8; }
.skeleton .silhouette .head-fill { fill: #3d3d44; }
.skeleton .silhouette .grip { fill: #3d3d44; }

.skeleton .bones polyline {
  fill: none;
  stroke: var(--accent);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 6px rgba(0, 201, 167, 0.55));
}

.skeleton .draw {
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: drawIn 1.4s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}
.skeleton .draw.arm { animation-delay: 0.5s; }
.skeleton .draw.body { animation-delay: 0.9s; }

@keyframes drawIn { to { stroke-dashoffset: 0; } }

.skeleton .joints circle {
  fill: var(--accent-bright);
  opacity: 0;
  animation: jointPop 0.4s ease-out forwards;
  filter: drop-shadow(0 0 5px rgba(128, 255, 232, 0.8));
}
.skeleton .joints circle:nth-child(1) { animation-delay: 0.6s; }
.skeleton .joints circle:nth-child(2) { animation-delay: 0.8s; }
.skeleton .joints circle:nth-child(3) { animation-delay: 1.0s; }
.skeleton .joints circle:nth-child(4) { animation-delay: 1.2s; }
.skeleton .joints circle:nth-child(5) { animation-delay: 1.4s; }
.skeleton .joints circle:nth-child(6) { animation-delay: 1.6s; }

@keyframes jointPop {
  from { opacity: 0; transform: scale(0.3); transform-origin: center; transform-box: fill-box; }
  to { opacity: 1; transform: scale(1); transform-origin: center; transform-box: fill-box; }
}

.skeleton .guide {
  stroke: var(--text-tertiary);
  stroke-width: 1.5;
  stroke-dasharray: 5 7;
  opacity: 0;
  animation: fadeIn 0.6s ease 1.9s forwards;
}

.skeleton .angle-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.5px;
  fill: var(--text-secondary);
  opacity: 0;
  animation: fadeIn 0.6s ease 2.1s forwards;
}

@keyframes fadeIn { to { opacity: 1; } }

/* Rule chips */
.rule-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 7px;
  background: rgba(30, 30, 33, 0.92);
  border: 1px solid var(--border-default);
  border-radius: 99px;
  padding: 7px 14px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.2px;
  color: var(--text-primary);
  backdrop-filter: blur(8px);
  opacity: 0;
  animation: chipIn 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.2) forwards;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
.chip-1 { top: 14px; left: -14px; animation-delay: 2.2s; }
.chip-2 { top: 52%; right: -18px; animation-delay: 2.5s; }
.chip-3 { bottom: 120px; left: -22px; animation-delay: 2.8s; }

.rule-chip .check { color: var(--success); font-weight: 700; }
.rule-chip .warn { color: var(--warning); font-size: 11px; }

@keyframes chipIn {
  from { opacity: 0; transform: translateY(10px) scale(0.92); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Score ring */
.score-ring {
  position: absolute;
  bottom: -34px;
  right: 26px;
  width: 132px;
  text-align: center;
}
.score-ring svg { width: 132px; height: 132px; transform: rotate(-90deg); }

.ring-track {
  fill: none;
  stroke: var(--surface-tertiary);
  stroke-width: 9;
}
.ring-fill {
  fill: none;
  stroke: url(#ringGrad);
  stroke-width: 9;
  stroke-linecap: round;
  stroke-dasharray: 326.7;
  stroke-dashoffset: 326.7;
  animation: ringFill 1.6s cubic-bezier(0.65, 0, 0.35, 1) 1.6s forwards;
  filter: drop-shadow(0 0 8px rgba(0, 201, 167, 0.5));
}
@keyframes ringFill { to { stroke-dashoffset: 42.5; } } /* 87% of 326.7 */

.score-value {
  position: absolute;
  top: 46px;
  left: 0;
  right: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 34px;
  letter-spacing: -1px;
  line-height: 1;
}
.score-value small {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0;
}

.score-caption {
  margin-top: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 9px;
  letter-spacing: 1.8px;
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { max-width: 480px; margin: 24px auto 0; width: 100%; }
  .chip-1 { left: 4px; }
  .chip-3 { left: 4px; }
  .chip-2 { right: 4px; }
}

/* ============ Sections ============ */
.section {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(64px, 10vh, 120px) clamp(20px, 5vw, 64px);
}

.section h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-lede {
  color: var(--text-secondary);
  max-width: 54ch;
  margin-bottom: 48px;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.step {
  background: var(--surface-secondary);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  padding: 28px 26px;
  transition: border-color 0.25s, transform 0.25s;
}
.step:hover { border-color: rgba(0, 201, 167, 0.45); transform: translateY(-3px); }

.step-num {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.step h3, .feature h3, .figure-card h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.2px;
  margin-bottom: 10px;
}

.step p, .feature p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Figures */
.figures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.figure-card {
  position: relative;
  background: var(--surface-secondary);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  padding: 24px;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.figure-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 100% 0%, rgba(0, 201, 167, 0.07), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.figure-card:hover { border-color: rgba(0, 201, 167, 0.45); transform: translateY(-3px); }
.figure-card:hover::after { opacity: 1; }

.figure-card .prog {
  color: var(--text-secondary);
  font-size: 12.5px;
  letter-spacing: 0.2px;
  margin-bottom: 18px;
}

.diff { display: flex; gap: 5px; }
.diff::before {
  content: 'DIFFICULTY';
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-tertiary);
  margin-right: 8px;
  align-self: center;
}

.diff i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--surface-tertiary);
  border: 1px solid var(--border-default);
}
.diff i.on {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 6px rgba(0, 201, 167, 0.6);
}

.figures-more {
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.feature {
  border-top: 1px solid var(--border-default);
  padding-top: 24px;
  transition: border-color 0.3s;
}
.feature:hover { border-top-color: var(--accent); }

.feature-icon {
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 16px;
}

/* Final CTA */
.cta-final { text-align: center; }
.cta-final h2 { margin-bottom: 20px; }
.cta-final .section-lede { margin: 0 auto 40px; }

/* ============ Footer ============ */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1240px;
  margin: 0 auto;
  padding: 32px clamp(20px, 5vw, 64px) 48px;
  border-top: 1px solid var(--border-default);
}

.footer-note {
  color: var(--text-tertiary);
  font-size: 12px;
}

/* ============ Reveal animations ============ */
.reveal-load {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
  animation-delay: calc(var(--d, 0) * 0.13s);
}

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
  transition-delay: calc(var(--d, 0) * 0.12s);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal, .reveal-load { opacity: 1; transform: none; }
}