/* Yukt — Premium Behavioral-Tech Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg: #09090b;
  --bg-elevated: rgba(24, 24, 27, 0.7);
  --bg-muted: #18181b;
  --text: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #818cf8;
  --accent-light: #6366f1;
  --accent-soft: rgba(99, 102, 241, 0.15);
  --accent-glow: rgba(99, 102, 241, 0.25);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font);
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.text-gradient {
  background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-accent {
  background: linear-gradient(135deg, var(--accent) 0%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Background animated orb */
.bg-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: floatOrb 10s ease-in-out infinite alternate;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, 50px) scale(1.1); }
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.body-lg {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.body-md {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(9, 9, 11, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.15;
}

.logo-name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.logo-by {
  font-family: var(--font);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.footer-brand .logo-name {
  font-size: 1.5rem;
}

.footer-brand .logo-by {
  font-size: 0.6875rem;
  margin-top: 2px;
}


.logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 10px;
  transition: var(--transition);
}

.btn-primary {
  background: var(--text);
  color: #000000;
  box-shadow: 0 4px 14px 0 rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  background: #e4e4e7;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background: var(--bg-elevated);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

/* Hero */
.hero {
  padding: calc(var(--nav-height) + 80px) 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 2px solid var(--accent-light);
}

.hero-sub {
  margin: 24px 0 40px;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Dashboard Preview */
.dashboard-preview {
  position: relative;
  background: var(--bg-elevated);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(255,255,255,0.05);
  overflow: hidden;
  animation: float 6s ease-in-out infinite;
  transform-style: preserve-3d;
  will-change: transform;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.dashboard-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d4d4d8;
}

.dot.red { background: #fca5a5; }
.dot.yellow { background: #fde68a; }
.dot.green { background: #86efac; }

.dashboard-body {
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.dash-card {
  background: var(--bg-muted);
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--border);
}

.dash-card.span-2 { grid-column: span 2; }
.dash-card.span-3 { grid-column: span 3; }

.dash-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.dash-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.dash-value.sm { font-size: 1.25rem; }

.timer-display {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
}

.streak-bar {
  display: flex;
  gap: 4px;
  margin-top: 12px;
}

.streak-day {
  flex: 1;
  height: 32px;
  background: var(--accent-soft);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--accent);
}

.streak-day.active {
  background: var(--accent);
  color: white;
}

.insight-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.insight-item:last-child { border: none; padding-bottom: 0; }

.insight-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-light);
  margin-top: 6px;
  flex-shrink: 0;
}

.blocked-apps {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.app-chip {
  padding: 4px 10px;
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: line-through;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 0.8125rem;
}

.leaderboard-rank {
  width: 20px;
  height: 20px;
  background: var(--accent-soft);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--accent);
}

.leaderboard-rank.gold { background: #fef3c7; color: #b45309; }

/* Sections */
section {
  padding: 100px 0;
}

section.muted {
  background: var(--bg-muted);
}

.section-header {
  max-width: 640px;
  margin-bottom: 64px;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header .body-lg {
  margin-top: 16px;
}

/* Problem section */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-size: 1.0625rem;
  color: var(--text-secondary);
}

.problem-list li::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent-light);
  border-radius: 2px;
  margin-top: 8px;
  flex-shrink: 0;
}

.highlight-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.highlight-box p {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.6;
}

.highlight-box .accent {
  color: var(--accent);
  font-weight: 600;
}

/* Philosophy cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.philosophy-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
}

.philosophy-card:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.philosophy-card .number {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.philosophy-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

/* Steps flow */
.steps-flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  position: relative;
}

.steps-flow::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-soft), var(--accent-light), var(--accent-soft));
  z-index: 0;
}

.step-item {
  position: relative;
  z-index: 1;
  text-align: center;
}

.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--bg-elevated);
  border: 2px solid var(--accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--accent);
}

.step-item p {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-elevated);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--accent-light);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.15);
  transform: translateY(-4px) scale(1.02);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-soft);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature-card h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.feature-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Behavioral loop */
.loop-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.loop-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 420px;
  margin: 0 auto;
}

.loop-ring {
  position: absolute;
  inset: 0;
  border: 2px solid var(--border);
  border-radius: 50%;
}

.loop-ring.inner {
  inset: 15%;
  border-color: var(--accent-soft);
}

.loop-center {
  position: absolute;
  inset: 35%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  text-align: center;
  line-height: 1.3;
  box-shadow: var(--shadow-lg);
}

.loop-node {
  position: absolute;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.8125rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.loop-node:nth-child(3) { top: 0; left: 50%; transform: translateX(-50%); }
.loop-node:nth-child(4) { top: 22%; right: 0; }
.loop-node:nth-child(5) { bottom: 22%; right: 0; }
.loop-node:nth-child(6) { bottom: 0; left: 50%; transform: translateX(-50%); }
.loop-node:nth-child(7) { bottom: 22%; left: 0; }
.loop-node:nth-child(8) { top: 22%; left: 0; }

.loop-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.loop-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
}

.loop-list li svg {
  width: 20px;
  height: 20px;
  color: var(--accent-light);
  flex-shrink: 0;
}

/* Two column content */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.prep-pillars {
  display: grid;
  gap: 12px;
}

.pillar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.pillar:hover {
  border-color: var(--accent-light);
  transform: translateX(4px);
}

.pillar-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-soft);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.pillar span {
  font-weight: 500;
  font-size: 0.9375rem;
}

/* Mentor cards */
.mentor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.mentor-tag {
  padding: 8px 16px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 100px;
}

.mentor-benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 32px;
}

.mentor-benefit {
  padding: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Ecosystem */
.ecosystem-visual {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.eco-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.eco-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-muted);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.eco-item svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  flex-shrink: 0;
}

.eco-item span {
  font-weight: 500;
  font-size: 0.9375rem;
}

.eco-note {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.eco-note span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.eco-note span::before {
  content: '✓';
  color: var(--accent-light);
  font-weight: 700;
}

/* Vision */
.vision-block {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 48px;
  background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg-muted) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.vision-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.vision-pillar h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.vision-pillar p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* CTA / Waitlist */
.cta-section {
  padding: 100px 0;
  background: var(--text);
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 100%;
  background: radial-gradient(ellipse at top, rgba(79, 70, 229, 0.2) 0%, transparent 60%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.brand-lockup-cta {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-bottom: 20px;
}

.brand-lockup-cta .logo-name {
  font-size: 1.75rem;
  color: white;
}

.brand-lockup-cta .logo-by {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.08em;
}

.cta-inner .display-lg {
  color: white;
  margin-bottom: 16px;
}

.cta-inner .body-lg {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
}

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 440px;
  margin: 0 auto 24px;
}

.waitlist-form input,
.waitlist-form select {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.9375rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: white;
  transition: var(--transition);
}

.waitlist-form input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.waitlist-form input:focus,
.waitlist-form select:focus {
  outline: none;
  border-color: var(--accent-light);
  background: rgba(255, 255, 255, 0.12);
}

.waitlist-form select {
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
}

.waitlist-form select option {
  background: var(--text);
  color: white;
}

.waitlist-form .btn-primary {
  background: white;
  color: var(--text);
  margin-top: 8px;
}

.waitlist-form .btn-primary:hover {
  background: #f4f4f5;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cta-section .btn-secondary {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.form-success {
  display: none;
  padding: 16px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 10px;
  color: #86efac;
  font-size: 0.9375rem;
}

.form-success.show { display: block; }

/* Footer */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.6;
}

.footer-col h5 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 6px 0;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Page-specific: Students */
.page-hero {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.page-hero .hero-sub {
  margin: 20px auto 0;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-light), var(--accent-soft));
}

.timeline-item {
  position: relative;
  padding: 0 0 48px 64px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: 16px;
  top: 4px;
  width: 18px;
  height: 18px;
  background: var(--bg-elevated);
  border: 3px solid var(--accent-light);
  border-radius: 50%;
}

.timeline-item h4 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* Detailed features */
.features-detailed {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-detailed {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.feature-detailed:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-detailed .feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
}

.feature-detailed h4 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-detailed p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Leaderboard preview */
.leaderboard-preview {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.lb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.lb-header h4 {
  font-family: var(--font-display);
  font-weight: 600;
}

.lb-metric {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.lb-row {
  display: grid;
  grid-template-columns: 40px 1fr repeat(3, 80px);
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.lb-row:last-child { border: none; }

.lb-row.header {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding-bottom: 12px;
}

.lb-score {
  font-weight: 600;
  color: var(--accent);
  text-align: right;
}

/* Community features */
.community-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.community-card {
  padding: 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.community-card h4 {
  font-weight: 600;
  margin-bottom: 8px;
}

.community-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.community-anti {
  margin-top: 32px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.community-anti span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

/* Partners page */
.partner-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.partner-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.partner-card:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-md);
}

.partner-card .feature-icon {
  margin-bottom: 20px;
}

.partner-card h4 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.partner-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Analytics dashboard */
.analytics-preview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.analytics-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.analytics-card h5 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 100px;
}

.chart-bar {
  flex: 1;
  background: var(--accent-soft);
  border-radius: 4px 4px 0 0;
  transition: height 0.6s ease;
}

.chart-bar.highlight {
  background: linear-gradient(180deg, var(--accent-light), var(--accent));
}

.metric-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.metric-row:last-child { border: none; }

.metric-value {
  font-weight: 600;
  color: var(--accent);
}

/* Business model */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.biz-item {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.biz-item h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.biz-item p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

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

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .problem-grid,
  .loop-section,
  .split-section {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .steps-flow { grid-template-columns: repeat(3, 1fr); }
  .steps-flow::before { display: none; }
  .partner-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .vision-pillars { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  section { padding: 64px 0; }

  .nav-links,
  .nav-cta .btn-secondary {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }

  .mobile-toggle { display: flex; }

  .cards-grid,
  .features-grid,
  .features-detailed,
  .partner-cards,
  .analytics-preview {
    grid-template-columns: 1fr;
  }

  .steps-flow { grid-template-columns: repeat(2, 1fr); }
  .dashboard-body { grid-template-columns: 1fr; }
  .dash-card.span-2,
  .dash-card.span-3 { grid-column: span 1; }
  .eco-grid { grid-template-columns: 1fr; }
  .mentor-benefits { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .lb-row { grid-template-columns: 32px 1fr 60px; }
  .lb-row > :nth-child(3),
  .lb-row > :nth-child(4) { display: none; }
}