/* ============================================================
   GradingPen Premium Redesign — redesign.css
   Apple Education × Notion × Linear × Stripe aesthetic
   Light base with strategic dark sections
   ============================================================ */

/* --- Custom Cursors --- */
html, body {
}
a, button, [role="button"], input[type="submit"], .clickable,
label, select, .tab-btn, .pricing-btn, .sample-btn, .nav-link, .cta-btn {
}

/* --- CSS Variables --- */
:root {
  --primary: #0A2463;
  --accent: #00B4D8;
  --accent-2: #0077A8;
  --amber: #f59e0b;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --border: #e2e8f0;
  --border-dark: rgba(255,255,255,0.1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-glow: 0 0 40px rgba(0,180,216,0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --nav-h: 80px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #00B4D8 0%, #0077A8 50%, #00E5FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-amber {
  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section Badges --- */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.section-badge.light {
  background: rgba(0,180,216,0.08);
  border: 1px solid rgba(0,180,216,0.25);
  color: var(--accent-2);
}

.section-badge.dark {
  background: rgba(0,180,216,0.12);
  border: 1px solid rgba(0,180,216,0.3);
  color: #67e8f9;
}

.section-badge.amber {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  color: #d97706;
}

.section-badge.green {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: #059669;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 15px;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s;
  background: rgba(255,255,255,0.15);
}

.btn:hover::before { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, #0077A8 0%, #00B4D8 60%, #00E5FF 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,180,216,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,180,216,0.5);
}

.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: rgba(0,180,216,0.05);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline-white:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-dark:hover {
  background: #0d2d7a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
  border-radius: 9px;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 17px;
  border-radius: 14px;
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 max(24px, calc((100vw - 1280px) / 2));
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  transition: height 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
  height: 64px;
  background: rgba(255,255,255,0.95);
  box-shadow: 0 1px 20px rgba(0,0,0,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(10,36,99,0.05);
}

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

.nav-login {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-login:hover {
  color: var(--primary);
  background: rgba(10,36,99,0.05);
}

.nav-cta {
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(0,180,216,0.3);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,180,216,0.45);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  padding: 16px 24px 24px;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}

.nav-mobile.open { display: flex; }

.nav-mobile .nav-link {
  padding: 12px 16px;
  font-size: 16px;
  display: block;
}

.nav-mobile .nav-cta {
  margin-top: 8px;
  text-align: center;
  justify-content: center;
  padding: 14px;
  font-size: 16px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: auto;
  padding: calc(var(--nav-h) + 24px) 24px 40px;
  display: flex;
  align-items: flex-start;
  position: relative;
  background: linear-gradient(160deg, #f0f9ff 0%, #ffffff 40%, #fefce8 100%);
}
/* Contain orbs without clipping content */
.hero-orbs-container {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

/* Gradient mesh orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.55;
}

.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,216,0.4) 0%, transparent 70%);
  top: -150px;
  right: -100px;
  animation: orbDrift1 18s ease-in-out infinite;
}

.hero-orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,158,11,0.25) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
  animation: orbDrift2 22s ease-in-out infinite;
}

.hero-orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,0.2) 0%, transparent 70%);
  top: 40%;
  left: 35%;
  animation: orbDrift3 16s ease-in-out infinite;
}

@keyframes orbDrift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-60px, 40px) scale(1.05); }
  66% { transform: translate(40px, -30px) scale(0.95); }
}

@keyframes orbDrift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(80px, -50px) scale(1.08); }
  66% { transform: translate(-40px, 30px) scale(0.92); }
}

@keyframes orbDrift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-50px, -40px) scale(1.1); }
}

/* Floating particles */
.particles-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  opacity: 0;
  animation: particleDrift linear infinite;
}

@keyframes particleDrift {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.4; }
  100% { transform: translateY(-20px) translateX(var(--drift-x, 20px)); opacity: 0; }
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
  position: relative;
  z-index: 2;
}

.hero-left { }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255,255,255,0.8);
  border: 1px solid rgba(0,180,216,0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-2);
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(0,180,216,0.12);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-title .line-2 {
  display: block;
  background: linear-gradient(135deg, #00B4D8 0%, #0055A8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 36px;
  font-weight: 400;
}

.hero-typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

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

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}

.hero-trust span { opacity: 0.4; }

/* Demo Card */
.hero-right {
  position: relative;
}

.demo-card {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 24px 80px rgba(10,36,99,0.12), 0 4px 24px rgba(0,180,216,0.1);
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

.demo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0A2463, #00B4D8, #f59e0b);
}

.demo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.demo-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

.demo-card-badge {
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(0,180,216,0.05));
  border: 1px solid rgba(0,180,216,0.2);
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.demo-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-soft);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  padding: 9px 16px;
  border: none;
  background: none;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.tab-btn.active {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
  color: var(--text);
  background: rgba(255,255,255,0.5);
}

#demoPasteTab, #demoUploadTab { }

.demo-textarea {
  width: 100%;
  min-height: 140px;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: #fff;
  resize: vertical;
  transition: border-color 0.2s;
  outline: none;
}

.demo-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,180,216,0.1);
}

.demo-textarea::placeholder { color: var(--text-3); }

.demo-upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
  background: var(--bg-soft);
}

.demo-upload-area:hover {
  border-color: var(--accent);
  background: rgba(0,180,216,0.03);
}

.demo-upload-area .upload-icon { font-size: 32px; margin-bottom: 8px; }
.demo-upload-area p { font-size: 14px; color: var(--text-2); }
.demo-upload-area span { font-size: 12px; color: var(--text-3); }

.demo-grade-btn {
  width: 100%;
  margin-top: 14px;
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,180,216,0.3);
}

.demo-grade-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,180,216,0.45);
}

.demo-grade-btn:disabled {
  opacity: 0.7;
  transform: none;
}

.sample-essays {
  margin-top: 16px;
}

.sample-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.sample-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sample-btn {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.sample-btn:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: rgba(0,180,216,0.05);
}

#demoResult { display: none; margin-top: 12px; }

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 24px;
}

.stats-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-suffix {
  background: linear-gradient(135deg, #00B4D8, #0077A8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 14px;
  color: var(--text-2);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  background: var(--border);
  display: none;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  background: linear-gradient(160deg, var(--bg-dark) 0%, #111827 100%);
  padding: 48px 24px;
  position: relative;
  overflow: hidden;
}

.how-it-works::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,216,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.how-it-works::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.section-header {
  text-align: center;
  margin-bottom: 28px;
}

.section-header h2 {
  font-size: clamp(32px, 3.5vw, 52px);
  color: #fff;
  margin-bottom: 16px;
}

.section-header.light h2 { color: var(--primary); }

.section-header p {
  font-size: 18px;
  color: #94a3b8;
  max-width: 560px;
  margin: 0 auto;
}

.section-header.light p { color: var(--text-2); }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,180,216,0.06), transparent);
  opacity: 0;
  transition: opacity 0.4s;
  border-radius: inherit;
}

.step-card:hover {
  border-color: rgba(0,180,216,0.25);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,180,216,0.12);
}

.step-card:hover::before { opacity: 1; }

.step-number {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0,180,216,0.3);
}

.step-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.step-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 15px;
  color: #94a3b8;
  line-height: 1.7;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  padding: 48px 24px;
  background: var(--bg);
}

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

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
  transform-style: preserve-3d;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0A2463, #00B4D8, #f59e0b);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  border-color: rgba(0,180,216,0.25);
  box-shadow: 0 16px 48px rgba(10,36,99,0.1);
  transform: translateY(-4px);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0,180,216,0.12), rgba(10,36,99,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.feature-card:hover .feature-icon-wrap {
  transform: scale(1.15) rotate(-5deg);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ============================================================
   BEFORE / AFTER
   ============================================================ */
.before-after {
  background: linear-gradient(160deg, #0f172a 0%, #020617 100%);
  padding: 48px 24px;
  position: relative;
  overflow: hidden;
}

.before-after::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0,180,216,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 300px;
  gap: 32px;
  align-items: start;
}

.comparison-card {
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  border: 1px solid;
}

.comparison-card.without {
  background: rgba(239,68,68,0.04);
  border-color: rgba(239,68,68,0.15);
}

.comparison-card.with {
  background: rgba(16,185,129,0.04);
  border-color: rgba(16,185,129,0.15);
}

.comparison-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comparison-card.without .comparison-label { color: #f87171; }
.comparison-card.with .comparison-label { color: #34d399; }

.comparison-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 15px;
  color: #cbd5e1;
}

.comparison-item:last-child { border-bottom: none; }

.comparison-item .icon {
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

.savings-card {
  background: linear-gradient(135deg, rgba(0,180,216,0.12), rgba(10,36,99,0.2));
  border: 1px solid rgba(0,180,216,0.2);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.savings-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 80px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, #00B4D8, #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.savings-label {
  font-size: 16px;
  color: #94a3b8;
  font-weight: 500;
}

/* ============================================================
   AI TUTOR
   ============================================================ */
.ai-tutor {
  padding: 48px 24px;
  background: linear-gradient(160deg, #f0f9ff 0%, #fff 60%, #f0fdf4 100%);
  overflow: hidden;
}

.ai-tutor-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.tutor-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 28px 0 36px;
}

.tutor-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.tutor-feature-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, rgba(0,180,216,0.12), rgba(0,180,216,0.06));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.tutor-feature-text h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 3px;
}

.tutor-feature-text p {
  font-size: 14px;
  color: var(--text-2);
}

/* Mock Chat */
.chat-mock {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.chat-header {
  background: linear-gradient(135deg, var(--primary), #1a3a7a);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #00B4D8, #fff);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.chat-name {
  font-weight: 600;
  color: #fff;
  font-size: 14px;
}

.chat-status {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}

.chat-online {
  width: 8px;
  height: 8px;
  background: #34d399;
  border-radius: 50%;
  margin-left: auto;
  box-shadow: 0 0 6px #34d399;
}

.chat-messages {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 280px;
  background: #f8fafc;
}

.chat-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
}

.chat-msg.student {
  background: #fff;
  border: 1px solid var(--border);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  color: var(--text);
}

.chat-msg.ai {
  background: linear-gradient(135deg, rgba(0,180,216,0.08), rgba(10,36,99,0.05));
  border: 1px solid rgba(0,180,216,0.15);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  color: var(--text);
}

.chat-msg.ai strong { color: var(--accent-2); }

.chat-msg-img {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-2);
}

.chat-msg-img .img-thumb {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #e0f2fe, #bae6fd);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.chat-input-bar {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  align-items: center;
  background: #fff;
}

.chat-input {
  flex: 1;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-3);
  background: var(--bg-soft);
  pointer-events: none;
}

.chat-send {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing {
  padding: 48px 24px;
  background: var(--bg-soft);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.pricing-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: var(--transition);
  transform-style: preserve-3d;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,180,216,0.25);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 20px 60px rgba(0,180,216,0.18);
  background: linear-gradient(160deg, #fff, #f0fdff);
}

.pricing-card.featured:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 0 2px var(--accent), 0 28px 80px rgba(0,180,216,0.25);
}

.pricing-popular {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.pricing-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.pricing-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.pricing-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.pricing-price sup {
  font-size: 20px;
  vertical-align: super;
  margin-right: 2px;
}

.pricing-period {
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 20px;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  min-height: 120px;
}

.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
}

.pricing-feature::before {
  content: '✓';
  color: #10b981;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.5px;
}

.pricing-btn {
  width: 100%;
  padding: 13px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 14px;
  border: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.pricing-btn.primary {
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,180,216,0.3);
}

.pricing-btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,180,216,0.45);
}

.pricing-btn.outline {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--border);
}

.pricing-btn.outline:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  transform: translateY(-2px);
}

.billing-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
}

.toggle-switch {
  width: 40px;
  height: 22px;
  background: var(--border);
  border-radius: 100px;
  position: relative;
  transition: background 0.3s;
}

.toggle-switch.active { background: var(--accent); }

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.3s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.toggle-switch.active::after { transform: translateX(18px); }

.savings-badge {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.25);
  color: #d97706;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
}

.pricing-more {
  text-align: center;
  margin-bottom: 40px;
}

.pricing-more a {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 15px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.pricing-more a:hover { color: var(--primary); }

.pricing-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-divider {
  width: 1px;
  height: 16px;
  background: var(--border);
}

/* ============================================================
   FREE TOOLS
   ============================================================ */
.free-tools {
  background: linear-gradient(160deg, #0f172a 0%, #0a1628 100%);
  padding: 48px 24px;
  position: relative;
  overflow: hidden;
}

.free-tools::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0,180,216,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.tool-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,180,216,0.06), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.tool-card:hover {
  border-color: rgba(0,180,216,0.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}

.tool-card:hover::before { opacity: 1; }

.tool-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.tool-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.tool-card p {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 20px;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #67e8f9;
  transition: gap 0.2s;
}

.tool-link:hover { gap: 10px; }

.tool-tag {
  display: inline-block;
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.25);
  color: #4ade80;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.blog-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.blog-link-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}

.blog-link-card:hover {
  border-color: rgba(0,180,216,0.2);
  background: rgba(0,180,216,0.04);
  transform: translateY(-2px);
}

.blog-link-card .blog-tag {
  font-size: 11px;
  font-weight: 600;
  color: #67e8f9;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.blog-link-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: #e2e8f0;
  line-height: 1.4;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  padding: 48px 24px;
  background: var(--bg);
}

.contact-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}

.contact-form-wrap h2 {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  color: var(--text-2);
  margin-bottom: 32px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  appearance: none;
}

.form-select {
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,180,216,0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  background: linear-gradient(135deg, #0A2463, #00B4D8);
  color: #fff;
  border: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,180,216,0.3);
  align-self: flex-start;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,180,216,0.45);
}

.contact-info {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info h3 {
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.contact-info-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(10,36,99,0.05));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.contact-info-text strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.contact-info-text span {
  font-size: 13px;
  color: var(--text-2);
}

/* ============================================================
   SUBSCRIBE
   ============================================================ */
.subscribe-strip {
  background: linear-gradient(135deg, var(--primary), #1a3a7a);
  padding: 36px 24px;
}

.subscribe-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.subscribe-inner h2 {
  font-size: 28px;
  color: #fff;
  margin-bottom: 8px;
}

.subscribe-inner p {
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
  font-size: 15px;
}

.subscribe-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.subscribe-input {
  flex: 1;
  padding: 13px 18px;
  border: none;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  outline: none;
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.2);
  transition: border-color 0.2s, background 0.2s;
}

.subscribe-input::placeholder { color: rgba(255,255,255,0.45); }

.subscribe-input:focus {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.16);
}

.subscribe-btn {
  padding: 13px 24px;
  background: #fff;
  color: var(--primary);
  border: none;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 14px;
  transition: var(--transition);
  white-space: nowrap;
}

.subscribe-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.subscribe-msg {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  display: none;
}

.subscribe-msg.success { color: #6ee7b7; }
.subscribe-msg.error { color: #fca5a5; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: linear-gradient(160deg, #0f172a 0%, #020617 100%);
  padding: 40px 24px 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo img {
  height: 32px;
  width: auto;
}

.footer-tagline {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-icon {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #64748b;
  transition: var(--transition);
}

.social-icon:hover {
  background: rgba(0,180,216,0.12);
  border-color: rgba(0,180,216,0.25);
  color: #67e8f9;
  transform: translateY(-2px);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #94a3b8;
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: #64748b;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: #e2e8f0; }

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 13px;
  color: #475569;
}

.footer-badges {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12px;
  color: #64748b;
}

/* ============================================================
   COOKIE BANNER
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: rgba(15,23,42,0.97);
  backdrop-filter: blur(12px);
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  transform: translateY(0);
  transition: transform 0.4s ease;
}

.cookie-banner.hidden { transform: translateY(110%); }

.cookie-text {
  font-size: 13px;
  color: #94a3b8;
  flex: 1;
  min-width: 200px;
}

.cookie-text a {
  color: #67e8f9;
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-accept {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 9px 20px;
  border-radius: 9px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 13px;
  transition: var(--transition);
}

.cookie-accept:hover { background: var(--accent-2); }

.cookie-decline {
  background: transparent;
  color: #64748b;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 9px 16px;
  border-radius: 9px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 13px;
  transition: var(--transition);
}

.cookie-decline:hover { color: #94a3b8; border-color: rgba(255,255,255,0.2); }

/* ============================================================
   ANIMATIONS / REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays (used by GSAP too) */
[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }
[data-delay="5"] { transition-delay: 0.5s; }

/* Icon bounce */
@keyframes bounceIn {
  0% { transform: scale(0.3) rotate(-10deg); opacity: 0; }
  60% { transform: scale(1.1) rotate(3deg); opacity: 1; }
  80% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

.bounce-in { animation: bounceIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both; }

/* Section transitions (gradient fade edges) */
.section-fade-bottom::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--bg-soft));
  pointer-events: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1280px) {
  .nav { padding: 0 24px; }
}

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { min-height: auto; padding: calc(var(--nav-h) + 60px) 24px 60px; }
  .hero-right { max-width: 600px; }

  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .comparison-grid { grid-template-columns: 1fr 1fr; }
  .savings-card { grid-column: 1 / -1; flex-direction: row; justify-content: center; text-align: left; }

  .ai-tutor-inner { grid-template-columns: 1fr; gap: 48px; }

  .pricing-grid { grid-template-columns: repeat(2, 1fr); }

  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-links { grid-template-columns: repeat(2, 1fr); }

  .contact-inner { grid-template-columns: 1fr; }
  .contact-info { order: -1; }

  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }

  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .nav-links, .nav-actions { display: none; }
  .nav-hamburger { display: flex; }

  .hero-title { font-size: clamp(36px, 8vw, 52px); }

  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }

  .features-grid { grid-template-columns: 1fr; }
  .comparison-grid { grid-template-columns: 1fr; }
  .savings-card { text-align: center; flex-direction: column; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto 40px; }

  .tools-grid { grid-template-columns: 1fr; }
  .blog-links { grid-template-columns: 1fr; }

  .subscribe-form { flex-direction: column; }
  .subscribe-btn { width: 100%; }

  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-badges { flex-wrap: wrap; justify-content: center; }

  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-number { font-size: 36px; }

  .form-row { grid-template-columns: 1fr; }

  .section-header h2 { font-size: clamp(26px, 6vw, 36px); }

  .demo-card { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .hero { padding: calc(var(--nav-h) + 40px) 16px 48px; }
  .stats-bar { padding: 32px 16px; }
  .stats-bar-inner { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stat-number { font-size: 32px; }

  .how-it-works, .features, .before-after, .ai-tutor, .pricing, .free-tools, .contact { padding: 72px 16px; }

  .section-header { margin-bottom: 40px; }

  .hero-trust { flex-direction: column; align-items: flex-start; }

  .footer { padding: 60px 16px 0; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }

  .cookie-banner { flex-direction: column; align-items: flex-start; }
  .cookie-actions { width: 100%; }
  .cookie-accept, .cookie-decline { flex: 1; text-align: center; }
}

@media (max-width: 320px) {
  .hero-title { font-size: 32px; }
  .stat-number { font-size: 28px; }
  .pricing-grid { max-width: 100%; }
}