:root {
  color-scheme: dark light;
  --bg-color: #0e1013;
  --card-bg: #15181e;
  --card-border: #232730;
  --text-main: #e6e8ec;
  --text-muted: #8b949e;
  --accent: #f59e0b;
  --accent-muted: rgba(245, 158, 11, 0.12);
  --code-bg: #181b22;
  --code-border: #2d333f;
  --table-header-bg: #181b22;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --max-width: 720px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent: #d97706;
    --accent-muted: rgba(217, 119, 6, 0.08);
    --code-bg: #f1f5f9;
    --code-border: #cbd5e1;
    --table-header-bg: #f1f5f9;
  }
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  padding: 2rem 1.25rem 4rem 1.25rem;
}

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

/* Header & Top Bar */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3.5rem;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
  text-decoration: none;
}

.lang-toggle {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.lang-toggle:hover {
  border-color: var(--accent);
}

/* Hero Section */
.hero {
  margin-bottom: 3.5rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-weight: 400;
}

/* Section styling */
section {
  margin-bottom: 3.5rem;
}

section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text-main);
}

section p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Code & Installation Block */
.code-block {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 8px;
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
  font-size: 0.9rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code-block code {
  display: block;
  color: var(--text-main);
  white-space: pre;
}

.code-block .prompt {
  color: var(--text-muted);
  user-select: none;
}

.code-block .cmd {
  color: var(--accent);
}

/* Comparison Table */
.table-wrapper {
  overflow-x: auto;
  margin-top: 1rem;
  border: 1px solid var(--card-border);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

th, td {
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--card-border);
}

th {
  background-color: var(--table-header-bg);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:last-child td {
  border-bottom: none;
}

td:first-child {
  font-weight: 600;
  color: var(--text-main);
  width: 22%;
}

td:nth-child(2) {
  color: var(--text-muted);
  width: 39%;
}

td:nth-child(3) {
  color: var(--text-main);
  width: 39%;
  background-color: var(--accent-muted);
}

/* Modes List */
.modes-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.mode-item {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
}

.mode-title {
  font-family: var(--font-mono);
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.mode-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Menu Bar Section List */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.975rem;
}

.feature-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.feature-list li strong {
  color: var(--text-main);
}

/* Privacy Callout */
.privacy-box {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 1.25rem;
  margin-top: 1rem;
}

.privacy-box p {
  color: var(--text-main);
  font-size: 0.975rem;
  margin: 0;
  line-height: 1.6;
}

/* MCP Tools List */
.mcp-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1rem;
}

.mcp-item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
}

.mcp-name {
  font-family: var(--font-mono);
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  min-width: 175px;
}

.mcp-detail {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
}

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

/* Mobile responsiveness */
@media (max-width: 640px) {
  body {
    padding: 1.5rem 1rem 3rem 1rem;
  }

  header {
    margin-bottom: 2.5rem;
  }

  .hero {
    margin-bottom: 2.5rem;
  }

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

  .hero p {
    font-size: 1.05rem;
  }

  section {
    margin-bottom: 2.5rem;
  }

  .mcp-item {
    flex-direction: column;
    gap: 0.25rem;
  }

  .mcp-name {
    min-width: auto;
  }
}