/* ===== VARIABLES ===== */
:root {
  --bg: #faf8f4;
  --bg-alt: #f2efe8;
  --fg: #1a1a12;
  --fg-muted: #6b6b5a;
  --accent: #c9942a;
  --accent-dim: rgba(201,148,42,0.15);
  --forest: #1c2e1c;
  --forest-mid: #2d4a2d;
  --forest-light: #4a7c59;
  --border: rgba(26,26,18,0.1);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 48px;
  display: flex;
  align-items: center;
  mix-blend-mode: difference;
}

.nav-inner {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
}

.nav-tagline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: center;
  padding: 120px 80px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--forest);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 70%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(201,148,42,0.12) 0%, transparent 65%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,148,42,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,148,42,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 70% 40%, black 30%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
  grid-column: 1;
  grid-row: 1;
  padding-right: 60px;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  font-weight: 500;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 32px;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  max-width: 440px;
  font-weight: 300;
}

.hero-visual {
  position: relative;
  z-index: 1;
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mitochondria-diagram {
  width: 320px;
  height: 320px;
  position: relative;
}

.mito-svg {
  width: 100%;
  height: 100%;
  animation: mitoPulse 6s ease-in-out infinite;
}

@keyframes mitoPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.03); }
}

.mito-label {
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.3);
  white-space: nowrap;
  text-align: center;
}

.hero-stats {
  position: relative;
  z-index: 1;
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat {
  padding: 0 48px 0 0;
}

.stat:first-child { padding-left: 0; }

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  margin-right: 48px;
}

/* ===== CELLULAR SECTION ===== */
.cellular {
  padding: 120px 80px;
  background: var(--bg);
}

.cellular-header {
  max-width: 600px;
  margin-bottom: 72px;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 500;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 24px;
}

.section-body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 540px;
  font-weight: 300;
}

.ingredient-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}

.ingredient-card {
  padding: 40px 36px;
  background: var(--bg);
  transition: background 0.3s ease;
}

.ingredient-card:hover {
  background: #f5f2eb;
}

.ingredient-icon {
  margin-bottom: 20px;
  width: 32px;
  height: 32px;
}

.ingredient-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
  line-height: 1.3;
}

.ingredient-target {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  font-weight: 500;
}

.ingredient-desc {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--fg-muted);
  font-weight: 300;
}

.cellular-note {
  margin-top: 28px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--fg-muted);
  font-style: italic;
}

.note-accent {
  color: var(--accent);
  font-style: normal;
  margin-right: 4px;
}

/* ===== PRINCIPLES SECTION ===== */
.principles {
  padding: 100px 80px;
  background: var(--forest);
  color: #fff;
}

.principles-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.principles .section-label {
  margin-bottom: 40px;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.principle-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.principle-marker {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
  flex-shrink: 0;
  margin-top: 6px;
}

.principle-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.principle-body {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  font-weight: 300;
}

.quote-block {
  position: relative;
  padding: 48px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.quote-block::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 48px;
  right: 48px;
  height: 2px;
  background: var(--accent);
}

.quote-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 300;
  font-style: italic;
  line-height: 1.7;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
}

.attribution-name {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: #fff;
  margin-bottom: 4px;
}

.attribution-role {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
}

/* ===== VISION SECTION ===== */
.vision {
  padding: 120px 80px;
  background: var(--bg-alt);
  text-align: center;
}

.vision-inner {
  max-width: 680px;
  margin: 0 auto;
}

.vision .section-label {
  margin-bottom: 32px;
}

.vision-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 48px;
}

.vision-quote {
  margin-bottom: 40px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.vision-statement {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1.25;
  color: var(--forest);
}

.vision-body {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--fg-muted);
  font-weight: 300;
}

/* ===== CLOSING SECTION ===== */
.closing {
  padding: 120px 80px;
  background: var(--forest);
  text-align: center;
  color: #fff;
}

.closing-inner {
  max-width: 560px;
  margin: 0 auto;
}

.closing-diagram {
  margin-bottom: 48px;
  display: flex;
  justify-content: center;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 24px;
}

.closing-body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  font-weight: 300;
}

/* ===== FOOTER ===== */
.footer {
  padding: 60px 80px 40px;
  background: #0f1a0f;
  color: rgba(255,255,255,0.4);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  margin-bottom: 8px;
}

.footer-tagline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-link {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: rgba(255,255,255,0.8);
}

.footer-legal p {
  font-family: var(--font-body);
  font-size: 0.7rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.2);
  max-width: 480px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding: 100px 48px 60px; }
  .hero-content { grid-row: 1; grid-column: 1; padding-right: 0; }
  .hero-visual { display: none; }
  .hero-stats { grid-column: 1; }
  .ingredient-grid { grid-template-columns: repeat(2, 1fr); }
  .principles-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .nav { padding: 20px 24px; }
  .hero { padding: 90px 24px 48px; }
  .cellular { padding: 80px 24px; }
  .principles { padding: 80px 24px; }
  .vision { padding: 80px 24px; }
  .closing { padding: 80px 24px; }
  .footer { padding: 48px 24px 32px; }
  .ingredient-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 24px; }
  .stat-divider { display: none; }
  .stat { padding: 0; }
  .footer-links { flex-wrap: wrap; gap: 20px; }
}