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

:root {
  --color-bg: #fafafa;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-accent: #2563eb;
  --color-accent-dark: #1d4ed8;
  --color-border: #e5e5e5;
  --color-card-bg: #ffffff;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Crimson Pro', Georgia, serif;
  --max-width: 1100px;
  --spacing: 2rem;
}

html {
  font-size: 18px;
  line-height: 1.6;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* Header */
.site-header {
  background: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Main Content */
main {
  flex: 1;
  padding: var(--spacing) 0;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.hero .intro {
  max-width: 650px;
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.8;
}

/* Page Header */
.page-header {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-header .subtitle {
  color: var(--color-text-light);
  font-size: 1.1rem;
}

/* Cards Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--color-accent);
}

.card .meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.card .description {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.card .tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--color-bg);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Book/Song specific */
.card.book .cover {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 1rem;
  background: var(--color-border);
}

.card.song .play-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: 0.75rem;
}

.card.song .play-btn:hover {
  background: var(--color-accent-dark);
}

/* Resources/Downloads */
.resource-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.resource-card .icon {
  font-size: 2rem;
}

.resource-card .info {
  flex: 1;
}

.resource-card h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.resource-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.resource-card .download-btn {
  background: var(--color-accent);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
}

.resource-card .download-btn:hover {
  background: var(--color-accent-dark);
}

/* Section headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.5rem;
}

.section-header h2 {
  font-size: 1.5rem;
}

.section-header .see-all {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
}

/* Content */
.content {
  max-width: 750px;
}

.content h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.content p {
  margin-bottom: 1rem;
}

.content ul, .content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content li {
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: auto;
}

.site-footer p {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  html {
    font-size: 16px;
  }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-card-bg);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
  
  .site-nav.open {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
}