/* =============================================
   BREATHWORK SITE — STYLES
   Aesthetic: Editorial / Natural / Refined
   Palette: Deep forest green, warm cream, earth tones
   ============================================= */

:root {
  --c-green-950: #0a1f0e;
  --c-green-900: #122a17;
  --c-green-800: #1a3d22;
  --c-green-700: #245430;
  --c-green-600: #2d6b3d;
  --c-green-500: #3a8a4f;
  --c-green-400: #52aa68;
  --c-green-300: #7dc491;
  --c-green-200: #aadbb7;
  --c-green-100: #d5eedd;
  --c-green-50: #eef7f1;

  --c-cream-50: #fdfaf4;
  --c-cream-100: #f7f0e0;
  --c-cream-200: #ede2c4;
  --c-cream-300: #ddd0a4;
  --c-cream-400: #c9b97e;

  --c-earth-800: #3d2e1a;
  --c-earth-600: #7a5c34;
  --c-earth-400: #b08a5a;
  --c-earth-200: #d9c4a0;
  --c-earth-100: #ede3d0;

  --c-text: #1a2e1e;
  --c-text-muted: #4a6352;
  --c-text-light: #7a9e87;

  --c-bg: #fdfaf4;
  --c-bg-alt: #f4f0e8;
  --c-surface: #ffffff;

  --c-accent: #2d6b3d;
  --c-accent-light: #eef7f1;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  --shadow-sm: 0 1px 4px rgba(26,46,30,0.08);
  --shadow-md: 0 4px 20px rgba(26,46,30,0.10);
  --shadow-lg: 0 12px 48px rgba(26,46,30,0.12);

  --max-w: 1100px;
  --nav-h: 64px;
}

/* ============ 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(--c-bg);
  color: var(--c-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  color: var(--c-text);
}

h1 { font-size: clamp(2.8rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.15rem; margin-bottom: 0.5rem; font-family: var(--font-body); font-weight: 500; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 500; }
em { font-style: italic; font-family: var(--font-display); }

/* ============ LAYOUT ============ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.section:nth-child(even) {
  background: var(--c-bg-alt);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--c-green-800);
  color: var(--c-cream-50);
  border-color: var(--c-green-800);
}
.btn-primary:hover {
  background: var(--c-green-900);
  border-color: var(--c-green-900);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--c-green-800);
  border-color: var(--c-green-700);
}
.btn-outline:hover {
  background: var(--c-green-50);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(253,250,244,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-cream-200);
  transition: box-shadow 0.3s;
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--c-text);
  text-decoration: none;
}

.nav-logo-icon {
  font-size: 1.4rem;
  color: var(--c-green-600);
  animation: spin 12s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--c-text-muted);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: color 0.2s;
  text-decoration: none;
}
.nav-links a:hover { color: var(--c-accent); }

.nav-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-menu-btn span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-text);
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-cream-200);
  padding: 1.5rem 2rem;
  flex-direction: column;
  gap: 1.25rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--c-text);
  font-size: 1.05rem;
  text-decoration: none;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--c-cream-200);
}
.mobile-menu a:last-child { border-bottom: none; padding-bottom: 0; }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 4rem) 2rem 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-circle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
}

.hero-circle.c1 {
  width: 700px;
  height: 700px;
  top: -200px;
  right: -200px;
  background: radial-gradient(circle, var(--c-green-400) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

.hero-circle.c2 {
  width: 500px;
  height: 500px;
  bottom: -100px;
  left: -100px;
  background: radial-gradient(circle, var(--c-earth-400) 0%, transparent 70%);
  animation: pulse 11s ease-in-out infinite reverse;
}

.hero-circle.c3 {
  width: 300px;
  height: 300px;
  top: 30%;
  left: 30%;
  background: radial-gradient(circle, var(--c-green-300) 0%, transparent 70%);
  animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.12; }
  50% { transform: scale(1.1); opacity: 0.18; }
}

.hero-content {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-green-600);
  margin-bottom: 1.5rem;
}

.hero-title {
  margin-bottom: 1.5rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-title em {
  color: var(--c-green-700);
  font-style: italic;
}

.hero-sub {
  max-width: 580px;
  font-size: 1.15rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

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

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--c-green-700);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  color: var(--c-text-light);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.scroll-indicator {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-text-light), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ SECTION TAGS ============ */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-green-600);
  background: var(--c-green-50);
  border: 1px solid var(--c-green-200);
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

.section-intro {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  max-width: 680px;
  margin-bottom: 3rem;
  line-height: 1.75;
}

/* ============ INTRO SECTION ============ */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.intro-text .lead {
  font-size: 1.15rem;
  color: var(--c-text-muted);
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.7;
}

.intro-quote-box {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

blockquote p {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--c-text);
  line-height: 1.65;
  margin-bottom: 1rem;
}

blockquote cite {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  font-style: normal;
  font-family: var(--font-mono);
}

/* ============ BREATHING ANIMATION ============ */
.breath-anim-wrapper {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.breath-anim {
  position: relative;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.breath-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--c-green-400);
  animation: breathe 8s ease-in-out infinite;
}

.breath-ring.r1 {
  width: 40px; height: 40px;
  opacity: 0.8;
  animation-delay: 0s;
}
.breath-ring.r2 {
  width: 70px; height: 70px;
  opacity: 0.5;
  animation-delay: 0.3s;
}
.breath-ring.r3 {
  width: 110px; height: 110px;
  opacity: 0.25;
  animation-delay: 0.6s;
}

@keyframes breathe {
  0%, 100% { transform: scale(0.7); }
  45% { transform: scale(1.1); }
  55% { transform: scale(1.1); }
}

.breath-core {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-green-400);
  opacity: 0.8;
  animation: breathe 8s ease-in-out infinite;
}

.breath-anim-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-green-600);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============ TIMELINE ============ */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--c-green-300), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-marker {
  position: absolute;
  left: -2.5rem;
  top: 0.5rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-cream-200);
  border: 2px solid var(--c-green-400);
  transform: translateX(-5px);
}

.timeline-marker.accent {
  background: var(--c-green-500);
  border-color: var(--c-green-700);
  width: 14px;
  height: 14px;
  top: 0.35rem;
  transform: translateX(-6px);
}

.timeline-content {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s;
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
}

.timeline-period {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-green-600);
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.technique-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.85rem;
  background: var(--c-green-50);
  color: var(--c-green-700);
  border: 1px solid var(--c-green-200);
  border-radius: 100px;
}

/* ============ SCIENCE SECTION ============ */
.science-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.science-card {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
}

.science-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.science-card.highlight {
  background: var(--c-green-50);
  border-color: var(--c-green-200);
}

.science-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--c-green-600);
}

.science-ref {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-light);
  padding-top: 1rem;
  border-top: 1px solid var(--c-cream-200);
}

/* ============ CHARTS ============ */
.chart-section {
  margin: 3rem 0;
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.chart-section h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.chart-caption {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  height: 340px;
}

.chart-wrapper-sm {
  height: 280px;
}

.chart-legend {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  font-size: 0.82rem;
  color: var(--c-text-muted);
  flex-wrap: wrap;
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: middle;
}

.legend-dot.teal { background: #3a8a4f; }
.legend-dot.grey { background: #c9c4b8; }

/* ============ TECHNIQUES SECTION ============ */
.technique-filter {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.5rem 1.1rem;
  border: 1.5px solid var(--c-cream-300);
  border-radius: 100px;
  background: transparent;
  color: var(--c-text-muted);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}

.filter-btn:hover {
  border-color: var(--c-green-400);
  color: var(--c-green-700);
  background: var(--c-green-50);
}

.filter-btn.active {
  background: var(--c-green-800);
  border-color: var(--c-green-800);
  color: white;
}

.techniques-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.technique-card {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.technique-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.technique-card.hidden {
  display: none;
}

.technique-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.technique-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  letter-spacing: 0.06em;
  width: fit-content;
}

.technique-badge.slow {
  background: #e8f4ea;
  color: #1a5c28;
  border: 1px solid #b5dcc0;
}

.technique-badge.high {
  background: #fef3e2;
  color: #7a4a0a;
  border: 1px solid #f0d499;
}

.technique-badge.ancient {
  background: #ede3d0;
  color: #5a3a1a;
  border: 1px solid #c9b090;
}

.technique-badge.modern {
  background: #e8eef4;
  color: #1a3a5c;
  border: 1px solid #b0c5d8;
}

.technique-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1.25rem 0;
  padding: 1rem;
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
}

.meta-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.83rem;
  gap: 1rem;
}

.meta-label {
  color: var(--c-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.meta-value {
  color: var(--c-text);
  text-align: right;
}

.evidence-bar {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.evidence-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-text-muted);
  letter-spacing: 0.04em;
  min-width: 110px;
}

.bar-track {
  flex: 1;
  height: 4px;
  background: var(--c-cream-200);
  border-radius: 2px;
  min-width: 60px;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(to right, var(--c-green-400), var(--c-green-600));
  border-radius: 2px;
  transition: width 0.8s ease;
}

.evidence-level {
  font-size: 0.72rem;
  color: var(--c-text-light);
  font-family: var(--font-mono);
  min-width: 120px;
  text-align: right;
}

/* ============ RESEARCH SECTION ============ */
.research-areas {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.research-area h3 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--c-text);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--c-cream-200);
  margin-bottom: 1.5rem;
}

.area-icon { font-size: 1.2rem; }

.paper-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.paper {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s;
}

.paper:hover { box-shadow: var(--shadow-md); }

.paper-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.paper-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--c-green-50);
  color: var(--c-green-700);
  border: 1px solid var(--c-green-200);
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

.paper-journal {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-muted);
  letter-spacing: 0.03em;
}

.paper-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-green-600);
  text-decoration: none;
}
.paper-link:hover { color: var(--c-green-800); text-decoration: underline; }

/* ============ PIONEERS ============ */
.pioneers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.pioneer-card {
  display: flex;
  gap: 1.25rem;
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
}

.pioneer-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pioneer-initial {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--c-green-100);
  border: 1.5px solid var(--c-green-300);
  color: var(--c-green-800);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pioneer-info { flex: 1; }

.pioneer-era {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-muted);
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

/* ============ ADJACENT SECTION ============ */
.adjacent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.adj-card {
  background: var(--c-surface);
  border: 1px solid var(--c-cream-200);
  border-left: 3px solid var(--c-green-400);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-left-color 0.25s, box-shadow 0.25s;
}

.adj-card:hover {
  border-left-color: var(--c-green-600);
  box-shadow: var(--shadow-md);
}

.adj-card h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.adj-card p {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.65;
}

/* ============ SAFETY SECTION ============ */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.safety-card {
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.safety-card.warning {
  background: #fff9ed;
  border: 1px solid #f0d499;
}

.safety-card.info {
  background: #eef4f9;
  border: 1px solid #b0c8db;
}

.safety-card.good {
  background: var(--c-green-50);
  border: 1px solid var(--c-green-200);
}

.safety-card h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.safety-card p {
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ============ RESOURCES SECTION ============ */
.resources-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
}

.resource-col h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-cream-200);
}

.resource-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.resource-list li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.resource-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--c-text);
}

.resource-author {
  font-size: 0.8rem;
  color: var(--c-green-600);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.resource-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

.resource-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-green-600);
}

/* ============ FOOTER ============ */
.footer {
  background: var(--c-green-950);
  color: var(--c-green-200);
  padding: 4rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer .nav-logo {
  color: var(--c-cream-100);
  font-size: 1.5rem;
}

.footer .nav-logo-icon { color: var(--c-green-400); }

.footer-note {
  max-width: 640px;
  font-size: 0.85rem;
  color: var(--c-green-300);
  line-height: 1.7;
}

.footer-built {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-green-600);
  letter-spacing: 0.04em;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: flex; }

  .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-stats { gap: 1.5rem; }
  .hero-stat-num { font-size: 1.75rem; }

  .section { padding: 4rem 0; }

  .timeline { padding-left: 1.5rem; }
  .timeline-marker { left: -1.5rem; }

  .science-grid { grid-template-columns: 1fr; }
  .pioneers-grid { grid-template-columns: 1fr; }

  .resources-columns { grid-template-columns: 1fr; gap: 2rem; }

  .chart-wrapper { height: 260px; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  h2 { font-size: 1.8rem; }
  .hero-cta { flex-direction: column; }
  .btn { text-align: center; justify-content: center; }
}

/* ============ SCROLL ANIMATIONS ============ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}