/* Global styles */
:root {
  --color-bg: #0b101b;
  --color-primary: #8aff49;
  --color-secondary: #8aeff4;
  --color-tertiary: #8ae0ff;
  --color-text: #e4eaf0;
  --color-muted: #8895a2;
  --font-family: 'Inter', sans-serif;
}

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-secondary);
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 0;
}

/* Header */
.site-header {
  background-color: #111827;
  border-bottom: 1px solid #1f2937;
}

.site-header .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
}

.main-nav li a {
  color: var(--color-muted);
  font-weight: 400;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.main-nav li a:hover {
  background-color: #1e2638;
  color: var(--color-primary);
}

/* Hero */
.hero {
  padding: 4rem 0;
  background: linear-gradient(135deg, #0f172a 0%, #14213d 100%);
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.hero p {
  max-width: 700px;
  margin: 0 auto 2rem;
  color: var(--color-muted);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.4rem;
  border-radius: 4px;
  font-weight: 600;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #0b101b;
}

.btn-primary:hover {
  background-color: var(--color-tertiary);
  color: #0b101b;
}

.btn-secondary {
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary);
  color: #0b101b;
}

/* Features */
.features {
  padding: 3rem 0;
}

.features .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.feature-card {
  flex: 1 1 30%;
  background-color: #111827;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

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

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--color-tertiary);
  font-size: 1.4rem;
}

.feature-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background-color: #111827;
  border-top: 1px solid #1f2937;
  text-align: center;
  padding: 1rem 0;
}

.site-footer p {
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  .features .container {
    flex-direction: column;
    align-items: center;
  }
  .feature-card {
    flex: 1 1 100%;
  }
}

/* Page header */
.page-header {
  background: #0f172a;
  padding: 3rem 0 2rem;
  text-align: center;
  border-bottom: 1px solid #1f2937;
}

.page-header h2 {
  color: var(--color-primary);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-muted);
  font-size: 1rem;
}

/* Recommendations cards */
.recommendations-grid .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
}

.card {
  background-color: #111827;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

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

.card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.card-content {
  padding: 1.5rem;
  flex-grow: 1;
}

.card-content h3 {
  margin-bottom: 0.5rem;
  color: var(--color-tertiary);
  font-size: 1.25rem;
}

.card-content p {
  flex-grow: 1;
  color: var(--color-muted);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.card-content .btn {
  width: fit-content;
  margin-top: auto;
}

/* Video page */
.videos {
  padding: 3rem 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.video-wrapper {
  background-color: #111827;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.video-wrapper iframe {
  width: 100%;
  height: 180px;
  border: none;
  margin-bottom: 1rem;
  border-radius: 4px;
}

.video-wrapper h3 {
  color: var(--color-tertiary);
  font-size: 1.1rem;
  text-align: center;
}

/* Generic content section */
.content-section {
  padding: 3rem 0;
}

.content-section p {
  max-width: 800px;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.6;
  text-align: center;
}