/* CSS Variables - Theme */
:root {
  /* Dark mode (default) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
  --code-bg: #1c2128;
  --border-color: #30363d;
  --link-color: #58a6ff;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8b949e;
  --accent: #d97706;
  --accent-hover: #b45309;
  --code-bg: #f6f8fa;
  --border-color: #d0d7de;
  --link-color: #0969da;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.header-controls {
  display: flex;
  gap: 0.75rem;
}

.toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.toggle-btn:hover {
  background-color: var(--border-color);
}

.lang-label {
  font-size: 0.75rem;
  font-weight: 600;
}

.theme-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-sun,
.icon-moon {
  transition: opacity 0.2s ease;
}

[data-theme="dark"] .icon-sun {
  display: block;
}

[data-theme="dark"] .icon-moon {
  display: none;
}

[data-theme="light"] .icon-sun {
  display: none;
}

[data-theme="light"] .icon-moon {
  display: block;
}

/* Main Content */
main {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.install-box {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.install-command {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 1.25rem;
  color: var(--accent);
}

/* Screenshot Section */
.screenshot-section {
  padding: 2rem 0 3rem;
}

.screenshot-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.screenshot {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

/* Sections */
.section {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.section-description {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.file-path {
  margin-bottom: 1rem;
}

.file-path code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Requirements List */
.requirements-list {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.requirements-list li {
  padding: 0.875rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.requirements-list li a {
  color: var(--link-color);
  text-decoration: none;
}

.requirements-list li a:hover {
  text-decoration: underline;
}

.requirements-list li code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Output Example */
.output-example {
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.output-example code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 1.1rem;
  color: var(--text-primary);
}

/* Feature Table */
.table-container {
  overflow-x: auto;
}

.feature-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.feature-table th,
.feature-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.feature-table th {
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
}

.feature-table td code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.9rem;
  color: var(--accent);
  background-color: var(--code-bg);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

/* Installation Methods */
.install-methods {
  display: grid;
  gap: 2rem;
}

.install-method {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.method-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* Code Blocks */
.code-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.code-block:last-child {
  margin-bottom: 0;
}

.code-block code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.code-block-large {
  align-items: flex-start;
}

.code-block-large pre {
  flex: 1;
  overflow-x: auto;
}

.code-block-large code {
  display: block;
  white-space: pre;
}

/* Copy Button */
.copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.copy-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.copy-btn .icon-check {
  display: none;
  color: #22c55e;
}

.copy-btn.copied .icon-copy {
  display: none;
}

.copy-btn.copied .icon-check {
  display: block;
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  margin-top: auto;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-content {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

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

.footer-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--link-color);
}

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

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 3rem 0 2rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

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

  .install-box {
    flex-direction: column;
    width: 100%;
  }

  .install-command {
    font-size: 1rem;
  }

  .section {
    padding: 2rem 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .output-example code {
    font-size: 0.85rem;
  }

  .feature-table th,
  .feature-table td {
    padding: 0.75rem 0.5rem;
    font-size: 0.875rem;
  }

  .code-block {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .copy-btn {
    width: 100%;
  }
}