/* EZTeach Website — Futuristic, professional, app-aligned */
:root {
  --navy: #0a1f44;
  --navy-light: #19376d;
  --accent: #3b82f6;
  --accent-alt: #6366f1;
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(10, 31, 68, 0.08);
  --shadow-lg: 0 20px 60px rgba(10, 31, 68, 0.12);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

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

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}


.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

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

.footer .logo { color: white; }

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: white;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-ctas { display: none; gap: 12px; align-items: center; }
.nav-cta { display: none; }
.nav-cta-primary { display: none; }
.nav-toggle { display: none; }

@media (min-width: 768px) {
  .nav-ctas { display: flex; }
  .nav-cta { display: inline-flex; }
  .nav-cta-primary { display: inline-flex; }
}

@media (max-width: 767px) {
  .nav { position: relative; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--navy);
    border-radius: 1px;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
}

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

.btn-ghost:hover {
  background: rgba(59, 130, 246, 0.08);
}

.btn-lg {
  padding: 16px 28px;
  font-size: 1rem;
}

.btn-icon { font-size: 1.1em; }

/* Hero */
.hero {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease-out;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease-out 0.1s both;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 32px;
  animation: fadeUp 0.6s ease-out 0.2s both;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  animation: fadeUp 0.6s ease-out 0.3s both;
}

.hero-visual {
  display: flex;
  justify-content: center;
  animation: fadeUp 0.6s ease-out 0.2s both;
}

.phone-mockup {
  width: 280px;
  height: 560px;
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.06);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg);
  border-radius: 28px;
  overflow: hidden;
}

.mock-app-bar {
  height: 44px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
}

.mock-content {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mock-card {
  height: 64px;
  background: linear-gradient(90deg, var(--border) 0%, var(--border) 40%, transparent 40%);
  background-size: 100% 100%;
  border-radius: var(--radius-sm);
  opacity: 0.8;
}

.mock-card.short { height: 40px; }

.hero-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-badge {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 48px;
}

/* Features */
.features { background: var(--bg-card); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.feature-card[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
}

.feature-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(99, 102, 241, 0.15));
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Pricing */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.pricing-card {
  position: relative;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
  box-shadow: var(--shadow);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.pricing-card .badge {
  position: absolute;
  top: -10px;
  right: 24px;
  padding: 4px 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
}

.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.price {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.price .amount { font-family: var(--font-mono); }

.pricing-card > p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 24px;
}

.pricing-card li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.pricing-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.pricing-card .btn { width: 100%; }

.pricing-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
}

.pricing-note code {
  padding: 2px 8px;
  background: var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

/* Download */
.download {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: white;
  text-align: center;
}

.download .section-title,
.download .section-desc {
  color: rgba(255,255,255,0.95);
}

.download .section-desc { color: rgba(255,255,255,0.8); }

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

.app-store-badge {
  display: inline-block;
  margin: 24px 0 16px;
  transition: transform var(--transition);
}

.app-store-badge:hover { transform: scale(1.05); }

.app-store-badge img {
  display: block;
  height: 60px;
  width: auto;
}

.download-note {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
}

.contact-links {
  list-style: none;
  margin-top: 20px;
}

.contact-links li { margin-bottom: 12px; }

.contact-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.contact-links a:hover { text-decoration: underline; }

.contact-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact-form button { width: 100%; }

.form-fallback {
  margin-top: 16px;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.form-fallback a { color: var(--accent); }

.formgrid-embed {
  display: block;
  border: 0;
  border-radius: var(--radius-sm);
  min-height: 340px;
}

/* Footer */
.footer {
  padding: 48px 0 24px;
  background: var(--navy);
  color: rgba(255,255,255,0.8);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9375rem;
}

.footer-links a:hover { color: white; }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.875rem;
  opacity: 0.8;
}

#year { font-family: var(--font-mono); }