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

:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-secondary: #f59e0b;
  --color-dark: #1e1b4b;
  --color-light: #f8fafc;
  --color-text: #334155;
  --color-text-light: #64748b;
  --font-main: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Orbitron', 'Nunito', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-light);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-dark);
  line-height: 1.3;
}

h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar-scrolled {
  background: var(--color-dark);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.navbar-logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

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

.navbar-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

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

.navbar-cta {
  background: linear-gradient(135deg, var(--color-secondary), #f97316);
  color: white !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(249, 115, 22, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.navbar-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.navbar-open .navbar-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-open .navbar-toggle span:nth-child(2) {
  opacity: 0;
}

.navbar-open .navbar-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 600px) {
  .navbar-toggle {
    display: block;
  }

  .navbar-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-dark);
    padding: 16px 24px 24px;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .navbar-open .navbar-links {
    display: flex;
  }

  .navbar-links a {
    font-size: 1.1rem;
    padding: 8px 0;
  }
}

/* Subpage styles */
.page-content {
  padding-top: 80px;
  min-height: calc(100vh - 120px);
}

.contact-section,
.about-section {
  padding: 80px 0;
  background: white;
}

.contact-section .container,
.about-section .container {
  max-width: 700px;
}

.contact-section h2,
.about-section h2 {
  margin-bottom: 2rem;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  padding: 20px 32px;
  background: var(--color-light);
  border-radius: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin: 1.5rem 0;
}

.contact-email:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.2);
}

.contact-intro,
.about-intro {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.about-text {
  text-align: center;
}

.about-text p {
  margin-bottom: 20px;
}

.author-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto 2.5rem;
  border: 4px solid var(--color-primary);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
}

.author-more-link {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
  margin-top: 4px;
  transition: color 0.2s ease;
}

.author-more-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary), #f97316);
  color: white;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.5);
}

.btn-buy {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
  font-size: 1.2rem;
  padding: 18px 48px;
}

.btn-buy:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  overflow: hidden;
  background: #0a0a2e;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,10,46,0.85) 0%, rgba(10,10,46,0.15) 28%, rgba(10,10,46,0.0) 40%, rgba(10,10,46,0.0) 60%, rgba(10,10,46,0.2) 75%, rgba(10,10,46,0.85) 100%);
  z-index: 1;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

.hero-top {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  padding: 60px 24px 0;
}

.hero-bottom {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  padding: 0 24px 60px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 0;
  text-shadow: 0 2px 30px rgba(0,0,0,0.6), 0 0 60px rgba(255,255,255,0.2);
  letter-spacing: 3px;
  white-space: nowrap;
}

.hero-subtitle {
  font-size: 1.4rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 30px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

/* About Section */
.about {
  padding: 100px 0;
  background: white;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.feature {
  text-align: center;
  padding: 40px 24px;
  border-radius: 20px;
  background: var(--color-light);
  transition: transform 0.3s ease;
}

.feature:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.feature h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.feature p {
  color: var(--color-text-light);
}

/* Characters Section */
.characters {
  padding: 100px 0;
  background: linear-gradient(180deg, #f0f4ff 0%, white 100%);
}

.characters-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.characters-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.character {
  padding: 20px 0;
  border-bottom: 1px solid #e2e8f0;
}

.character:last-child {
  border-bottom: none;
}

.character h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

/* Planets Section */
.planets {
  padding: 100px 0;
  background: var(--color-dark);
  color: white;
}

.planets h2 {
  color: white;
}

.planets-intro {
  text-align: center;
  font-size: 1.2rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 50px;
}

.planets-gallery {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.planet-card {
  width: 180px;
  text-align: center;
}

.planet-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.2);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.planet-card:hover img {
  transform: scale(1.05);
  border-color: var(--color-secondary);
}

.planet-card span {
  display: block;
  margin-top: 12px;
  font-weight: 600;
}

.planet-card {
  cursor: pointer;
}

/* Planet Modal */
.planet-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 46, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.planet-modal.active {
  opacity: 1;
  visibility: visible;
}

.planet-modal-content {
  background: white;
  border-radius: 24px;
  max-width: 500px;
  width: 100%;
  padding: 40px;
  position: relative;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}

.planet-modal.active .planet-modal-content {
  transform: scale(1) translateY(0);
}

.planet-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-light);
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text);
  transition: background 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.planet-modal-close:hover {
  background: var(--color-primary);
  color: white;
  transform: rotate(90deg);
}

.planet-modal-image {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  margin: 0 auto 24px;
  border: 4px solid var(--color-primary);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
}

.planet-modal-title {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  color: var(--color-dark);
}

.planet-modal-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.planet-modal-section {
  background: var(--color-light);
  padding: 20px;
  border-radius: 16px;
}

.planet-modal-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: white;
  background: var(--color-primary);
  padding: 6px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.planet-modal-section:nth-child(2) .planet-modal-label {
  background: var(--color-secondary);
}

.planet-modal-section p {
  color: var(--color-text);
  line-height: 1.6;
  font-size: 1rem;
}

.planets-more {
  text-align: center;
  margin-top: 40px;
  color: rgba(255,255,255,0.7);
  font-style: italic;
}

/* For Who Section */
.for-who {
  padding: 100px 0;
  background: white;
}

.for-who-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.for-who-item {
  padding: 40px;
  background: var(--color-light);
  border-radius: 20px;
  border-left: 4px solid var(--color-primary);
}

.for-who-item h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

/* Preview Section - Sample Download */
.preview {
  padding: 100px 0;
  background: linear-gradient(180deg, #fef3c7 0%, #fde68a 100%);
}

.preview-intro {
  text-align: center;
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: 40px;
  margin-top: -2rem;
}

.sample-card {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
  display: grid;
  grid-template-columns: 280px 1fr;
  overflow: hidden;
}

.sample-image {
  background: linear-gradient(135deg, #fce7f3 0%, #fbcfe8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.sample-image img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid white;
  box-shadow: 0 12px 30px rgba(0,0,0,0.2);
}

.sample-info {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sample-badge {
  display: inline-block;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  width: fit-content;
}

.sample-info h3 {
  font-size: 2rem;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.sample-description {
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.sample-lessons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.sample-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text);
}

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

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
  transition: all 0.3s ease;
  width: fit-content;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-download svg {
  flex-shrink: 0;
}

/* Sample Grid (two samples side-by-side) */
.sample-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.sample-card-compact {
  grid-template-columns: 1fr;
  max-width: none;
}

.sample-card-compact .sample-image {
  padding: 30px;
}

.sample-card-compact .sample-image img {
  width: 160px;
  height: 160px;
}

.sample-card-compact .sample-info {
  padding: 24px;
  text-align: center;
}

.sample-card-compact .sample-badge {
  margin-left: auto;
  margin-right: auto;
}

.sample-card-compact .sample-info h3 {
  font-size: 1.5rem;
}

.sample-card-compact .sample-lessons {
  align-items: center;
}

.sample-card-compact .btn-download {
  width: 100%;
  justify-content: center;
}

/* Buy Section */
.buy {
  padding: 100px 0;
  background: linear-gradient(180deg, #4f46e5 0%, #6366f1 100%);
}

.buy h2 {
  color: white;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: white;
  border-radius: 20px;
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  position: relative;
}

.pricing-card h3 {
  font-family: var(--font-main);
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.pricing-subtitle {
  color: var(--color-text-light);
  font-size: 1.05rem;
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  width: 100%;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 1rem;
  text-align: left;
}

.pricing-price {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.price {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-primary);
}

.price-old {
  font-size: 1.2rem;
  color: var(--color-text-light);
  text-decoration: line-through;
}

.pricing-card-featured {
  border: 3px solid var(--color-secondary);
  transform: scale(1.05);
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-secondary), #f97316);
  color: white;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.pricing-card .btn-buy {
  width: 100%;
  text-align: center;
}

.buy-guarantee {
  margin-top: 32px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  text-align: center;
}

/* Author Section */
.author {
  padding: 100px 0;
  background: var(--color-light);
}

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

.author-content p {
  margin-bottom: 20px;
}

/* Footer */
.footer {
  padding: 40px 0;
  background: var(--color-dark);
  color: rgba(255,255,255,0.7);
  text-align: center;
}

.footer-nav {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  gap: 24px;
}

.footer-nav a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

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

.footer-links {
  margin-top: 16px;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 900px) {
  .hero h1 {
    font-size: 3rem;
    white-space: normal;
  }

  .characters-grid {
    grid-template-columns: 1fr;
  }

  .sample-grid {
    grid-template-columns: 1fr;
  }

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

  .pricing-card-featured {
    transform: none;
    order: -1;
  }

  h2 {
    font-size: 2rem;
  }
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-top {
    padding-top: 70px;
  }

  .hero-bottom {
    padding-bottom: 40px;
  }

  .hero-image {
    object-fit: contain;
    object-position: center center;
  }

  .btn {
    padding: 14px 28px;
  }

  .planet-card {
    width: 140px;
  }

  .planet-modal-content {
    padding: 24px;
    padding-top: 50px;
  }

  .planet-modal-image {
    width: 120px;
    height: 120px;
  }

  .planet-modal-title {
    font-size: 1.4rem;
  }

  .planet-modal-section {
    padding: 16px;
  }

  .planet-modal-section p {
    font-size: 0.95rem;
  }

  /* Sample card responsive */
  .sample-card-compact .sample-image img {
    width: 120px;
    height: 120px;
  }

  .sample-card-compact .sample-info h3 {
    font-size: 1.3rem;
  }
}