/* ── AIKA Academy — Landing Page Stílusok ─────────────────────────────── */

:root {
  /* Világos téma (alapértelmezett) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

  /* Márka színek */
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --accent-bg: #eef2ff;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Gradiens */
  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --gradient-cta: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-text: linear-gradient(135deg, #6366f1 0%, #a855f7 40%, #ec4899 100%);

  /* Tipográfia */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --section-padding: 6rem 0;
  --container-max: 1200px;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Animáció */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sötét téma */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #334155;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.25);
  --accent-bg: #1e1b4b;
}

/* ── Reset ────────────────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

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

/* ── Container ────────────────────────────────────────────────────────── */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Navbar ───────────────────────────────────────────────────────────── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.85);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.logo-icon { font-size: 1.5rem; }
.accent { color: var(--accent); }

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Gombok ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-sm { padding: 0.5rem 1.25rem; font-size: var(--font-size-sm); }
.btn-lg { padding: 0.875rem 2rem; font-size: var(--font-size-lg); }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  padding: 10rem 0 6rem;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 50%);
  z-index: 0;
}

[data-theme="dark"] .hero-bg {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
}

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

.hero-badge {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.hero-gradient {
  display: block;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero-desc {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Section Header ───────────────────────────────────────────────────── */

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

/* ── Features ─────────────────────────────────────────────────────────── */

.features {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  transition: all var(--transition);
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--accent-bg);
  color: var(--accent);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
}

.feature-levels {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.level {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.level-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: #fff;
}

.l1 { background: #22c55e; }
.l2 { background: #f59e0b; }
.l3 { background: #ef4444; }

.feature-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge-preview {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 1rem;
}

/* ── How it Works ─────────────────────────────────────────────────────── */

.how-it-works {
  padding: var(--section-padding);
}

.steps {
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
}

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

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-cta);
  color: #fff;
  font-size: var(--font-size-xl);
  font-weight: 800;
  border-radius: 50%;
}

.step-content { flex: 1; }

.step-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.step-content p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.step-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.step-connector {
  width: 2px;
  height: 2rem;
  background: var(--border-color);
  margin: 0 auto;
}

/* ── Pricing ──────────────────────────────────────────────────────────── */

.pricing {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
}

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

.pricing-card.popular {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-4px);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-cta);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 0.3rem 1rem;
  border-radius: 1rem;
  white-space: nowrap;
}

.pricing-header {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.pricing-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.price-amount {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--accent);
}

.price-currency {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.price-period {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.pricing-features {
  margin-bottom: 2rem;
}

.pricing-features li {
  padding: 0.5rem 0;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.pricing-features li.disabled {
  color: var(--text-muted);
  opacity: 0.6;
}

/* ── Testimonials ─────────────────────────────────────────────────────── */

.testimonials {
  padding: var(--section-padding);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition);
}

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

.testimonial-stars {
  color: #f59e0b;
  font-size: var(--font-size-lg);
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.testimonial-card > p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-cta);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.testimonial-author strong {
  display: block;
  font-size: var(--font-size-sm);
}

.testimonial-author span {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* ── FAQ ──────────────────────────────────────────────────────────────── */

.faq {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.faq-list {
  max-width: 750px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  transition: all var(--transition);
}

.faq-item.active {
  border-color: var(--accent-light);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition);
}

.faq-question:hover { color: var(--accent); }

.faq-arrow {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  transition: transform var(--transition);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

/* ── CTA Section ──────────────────────────────────────────────────────── */

.cta-section {
  padding: var(--section-padding);
}

.cta-content {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: 4rem 2rem;
  text-align: center;
  color: #fff;
}

.cta-content h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-top: 0.75rem;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links a {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  padding: 0.25rem 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ── Reszponzív ───────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --section-padding: 4rem 0;
  }

  .nav-links { display: none; }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    gap: 0.75rem;
  }

  .hamburger { display: flex; }

  .nav-actions .btn { display: none; }

  .hero { padding: 8rem 0 4rem; }

  .hero-stats { gap: 2rem; }

  .features-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

  .pricing-card.popular {
    transform: none;
  }

  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }

  .step {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats { flex-direction: column; gap: 1rem; }
}