/* ========================================
   wshowlyrics - GitHub Pages Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  --color-bg: #0d1117;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #21262d;
  --color-text: #c9d1d9;
  --color-text-muted: #8b949e;
  --color-primary: #4a90d9;
  --color-secondary: #2ecc71;
  --color-accent: #ffd700;
  --color-border: #30363d;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  --max-width: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* ========================================
   Header / Navigation
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-text);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.github-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-tertiary);
  border-radius: 6px;
}

.github-link:hover {
  background: var(--color-border);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s ease;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: 2rem;
}

.badges {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.quick-install {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
}

.quick-install code {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-secondary);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: #5a9fe9;
  color: white;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

/* ========================================
   Section Base
   ======================================== */

.section {
  padding: 5rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-alt {
  background: var(--color-bg-secondary);
}

.section-alt .section {
  max-width: var(--max-width);
}

.section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-align: center;
}

.section .subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* ========================================
   Features Section
   ======================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-radius: 10px;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

/* ========================================
   Screenshots Section
   ======================================== */

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.screenshot-card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.screenshot-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.screenshot-card img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: var(--color-bg);
}

.screenshot-card figcaption {
  padding: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* ========================================
   Installation Section
   ======================================== */

.install-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  border-color: var(--color-text-muted);
}

.tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.tab-container {
  max-width: 700px;
  margin: 0 auto;
  overflow: hidden;
  transition: height 0.3s ease;
}

.tab-content {
  display: none;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tab-content.active {
  display: block;
  opacity: 1;
}

.tab-content h3 {
  margin-bottom: 1rem;
}

.code-block {
  background: var(--color-bg);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.code-block .comment {
  color: var(--color-text-muted);
}

/* ========================================
   Configuration Section
   ======================================== */

.config-example {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.config-example h3 {
  margin-bottom: 1rem;
}

.config-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.config-option {
  background: var(--color-bg);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.config-option:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.config-option strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-accent);
}

.config-option span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ========================================
   Footer
   ======================================== */

.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 4rem 1.5rem 2rem;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--color-text-muted);
}

.footer-section a:hover {
  color: var(--color-text);
}

.license {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.disclaimer {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 1rem;
}

.copyright {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    gap: 0;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links li:last-child a {
    border-bottom: none;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .tagline {
    font-size: 1.25rem;
  }

  .section h2 {
    font-size: 2rem;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 5rem 1rem 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 3rem 1rem;
  }

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