/* ── DESIGN TOKENS ── */
:root {
  --bg: #ffffff;
  --ink: #0a0a0a;
  --ink-dim: #6b6b6b;
  --accent: rgb(87, 130, 127);
  --accent-faint: rgba(87, 130, 127, 0.12);
  --border: rgba(10, 10, 10, 0.08);
  --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
  --left-w: 33.33vw;
  --nav-h: 68px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── GRID OVERLAY ── */
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  /*
    Two layers:
    1. SVG crosshair ( + ) centered in each 80×80 tile — appears every 80px
    2. Radial-gradient dot at every 20px intersection
  */
  background-image:
    url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='80'><line x1='0' y1='40' x2='80' y2='40' stroke='%230a0a0a' stroke-opacity='0.04' stroke-width='0.4'/><line x1='40' y1='0' x2='40' y2='80' stroke='%230a0a0a' stroke-opacity='0.04' stroke-width='0.4'/><line x1='40' y1='33' x2='40' y2='47' stroke='%230a0a0a' stroke-opacity='0.11' stroke-width='0.8'/><line x1='33' y1='40' x2='47' y2='40' stroke='%230a0a0a' stroke-opacity='0.11' stroke-width='0.8'/></svg>"),
    radial-gradient(circle, rgba(10,10,10,0.18) 0.75px, transparent 0.75px);
  background-size: 80px 80px, 20px 20px;
  background-position: 0 0, 0 0;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 44px;
  height: var(--nav-h);
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink);
  opacity: 0;
  transform: translateY(-8px);
}

.nav-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--bg);
  background: var(--accent);
  text-decoration: none;
  padding: 10px 22px;
  opacity: 0;
  transform: translateY(-8px);
  transition: background 0.2s ease;
}

.nav-cta:hover {
  background: rgba(87, 130, 127, 0.82);
}

/* ── LAYOUT ── */
.layout {
  display: grid;
  grid-template-columns: var(--left-w) 1fr;
  align-items: start;
  position: relative;
  z-index: 1;
}

/* ── LEFT PANEL ── */
.left-panel {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cell-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  z-index: 2;
  -webkit-mask-image: linear-gradient(
    to right,
    black 0%,
    black 60%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    black 0%,
    black 60%,
    transparent 100%
  );
}

.video-overlay-labels {
  position: absolute;
  bottom: 44px;
  left: 32px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  z-index: 2;
}

.vl {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.vl--accent {
  color: var(--accent);
}

.left-rule {
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: var(--border);
  z-index: 3;
}

/* ── RIGHT PANEL ── */
.right-panel {
  position: relative;
  min-height: 100vh;
}

/* ── SECTIONS ── */
.section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 72px 80px 64px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type {
  border-bottom: none;
}

.section-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 620px;
}

/* ── SECTION ARC ── */
.section-arc {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  height: 320px;
  opacity: 0.22;
  z-index: 1;
  pointer-events: none;
}

.section-arc--large {
  width: 420px;
  height: 420px;
  right: -100px;
}

.arc-ring {
  stroke-dasharray: 1131;
  stroke-dashoffset: 1131;
}

/* ── UTILITY ── */
.mono {
  font-family: var(--font-mono);
}

.kicker {
  display: block;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 24px;
}

.rule {
  width: 48px;
  height: 1px;
  background: var(--ink);
  margin-bottom: 32px;
  transform-origin: left center;
  transform: scaleX(0);
}

/* ── HERO ── */
.s-hero {
  padding-top: calc(var(--nav-h) + 60px);
}

.s-hero .section-inner {
  max-width: none;
}

.hero-title {
  font-size: clamp(56px, 8vw, 128px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 36px;
  color: var(--ink);
  min-height: 1.1em;
  white-space: nowrap;
}

.hero-pre {
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  font-family: var(--font-mono);
}

.hero-main {
  color: var(--accent);
}

.hero-cursor {
  display: inline-block;
  color: var(--accent);
  font-weight: 300;
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-tagline {
  font-size: clamp(16px, 1.8vw, 21px);
  font-weight: 300;
  color: var(--ink-dim);
  max-width: 440px;
  line-height: 1.6;
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(14px);
}

.hero-stat {
  display: flex;
  gap: 52px;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(10px);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-item .kicker {
  margin-bottom: 0;
}

.hero-num {
  font-family: var(--font-mono);
  font-size: clamp(44px, 6vw, 88px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
  margin-top: 8px;
}

/* ── SECTION TITLES ── */
.section-title {
  font-size: clamp(30px, 3.6vw, 52px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin-bottom: 28px;
  opacity: 0;
  transform: rotate(-6deg) scale(0.93);
  transform-origin: left center;
}

.section-title--cta {
  font-size: clamp(48px, 6vw, 88px);
}

/* ── SECTION BODY ── */
.section-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-dim);
  margin-bottom: 18px;
  opacity: 0;
  transform: translateY(18px);
}

/* ── STATS ROW ── */
.stats-row {
  display: flex;
  gap: 52px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.stat-block {
  opacity: 0;
  transform: translateY(18px);
}

.stat-number {
  font-family: var(--font-mono);
  font-size: clamp(52px, 7vw, 96px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ── TIMELINE ── */
.timeline {
  margin-bottom: 32px;
}

.timeline-item {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 22px 0;
  border-top: 1px solid var(--border);
  opacity: 0;
  transform: translateX(-16px);
}

.timeline-item:last-child {
  border-bottom: 1px solid var(--border);
}

.tl-marker {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  min-width: 36px;
  padding-top: 2px;
  flex-shrink: 0;
}

.tl-content {
  flex: 1;
}

.tl-label {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 6px;
}

.tl-text {
  font-size: 14px;
  color: var(--ink-dim);
  line-height: 1.65;
}

.protocol-cadence {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 20px;
  opacity: 0;
  transform: translateY(10px);
}

/* ── WHO GRID ── */
.who-grid {
  margin-bottom: 20px;
}

.who-item {
  padding: 26px 0;
  border-top: 1px solid var(--border);
  opacity: 0;
  transform: translateY(14px);
}

.who-item:last-child {
  border-bottom: 1px solid var(--border);
}

.who-tag {
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.who-item p {
  font-size: 15px;
  color: var(--ink-dim);
  line-height: 1.7;
}

/* ── CTA / WAITLIST ── */
.waitlist-form {
  margin-top: 36px;
  opacity: 0;
  transform: translateY(18px);
}

.form-row {
  display: flex;
  max-width: 460px;
}

.form-input {
  flex: 1;
  padding: 13px 18px;
  border: 1px solid rgba(10, 10, 10, 0.18);
  border-right: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input::placeholder {
  color: var(--ink-dim);
}

.form-input:focus {
  border-color: var(--accent);
}

.form-btn {
  padding: 13px 26px;
  background: var(--accent);
  color: #fff;
  border: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: background 0.2s ease;
  white-space: nowrap;
}

.form-btn:hover {
  background: rgba(87, 130, 127, 0.82);
}

.form-note {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 14px;
  opacity: 0;
}

/* ── FOOTER ── */
.footer {
  padding: 36px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* ── REVEAL INITIAL STATES (managed by GSAP) ── */
.reveal-item {
  opacity: 0;
  transform: translateY(16px);
}

.reveal-title {
  opacity: 0;
  transform: rotate(-6deg) scale(0.93);
  transform-origin: left center;
}

.reveal-rule {
  transform: scaleX(0);
  transform-origin: left center;
}

.reveal-stat {
  opacity: 0;
  transform: translateY(18px);
}

.reveal-timeline {
  opacity: 0;
  transform: translateX(-16px);
}

.reveal-who {
  opacity: 0;
  transform: translateY(14px);
}

.reveal-form {
  opacity: 0;
  transform: translateY(18px);
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .hero-title {
    font-size: clamp(36px, 10vw, 72px);
    white-space: normal;
  }

  .hero-stat {
    flex-direction: column;
    gap: 16px;
  }

  .hero-stat-item .kicker {
    margin-bottom: 0;
  }
}

@media (max-width: 900px) {
  :root {
    --left-w: 100%;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .left-panel {
    position: relative;
    height: 56vw;
    max-height: 320px;
    min-height: 200px;
  }

  .cell-video {
    -webkit-mask-image: linear-gradient(
      to bottom,
      black 50%,
      transparent 100%
    );
    mask-image: linear-gradient(
      to bottom,
      black 50%,
      transparent 100%
    );
  }

  .left-rule {
    display: none;
  }

  .section {
    padding: 80px 32px 64px;
  }

  .nav {
    padding: 0 24px;
  }

  .section-arc {
    width: 200px;
    height: 200px;
    right: -20px;
    opacity: 0.14;
  }

  .section-arc--large {
    width: 260px;
    height: 260px;
    right: -40px;
  }

  .stats-row {
    gap: 32px;
  }

  .form-row {
    flex-direction: column;
  }

  .form-input {
    border-right: 1px solid rgba(10, 10, 10, 0.18);
    border-bottom: none;
  }

  .footer {
    padding: 28px 32px;
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}