:root {
    --bg-base: #050505;
    --bg-surface: #0d1117;
    --bg-elevated: #161b22;
    --bg-pill-active: #2d333b;
    --border-hairline: #1e242c;
    --border-hover: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-green: #2ea043;
    --accent-blue: #58a6ff;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

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

html, body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--text-primary);
}

/* Top Navigation Bar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(5, 5, 5, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-hairline);
}

.nav-container {
    max-width: 1120px;
    margin: 0 auto;
    height: 60px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: 1px solid var(--border-hairline);
}

.brand-mark {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.version-pill {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    padding: 2px 8px;
    border-radius: 999px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 13px;
    font-weight: 500;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-download:hover {
    background-color: var(--bg-elevated);
    border-color: var(--text-secondary);
}

/* Hero Section */
.hero-section {
    max-width: 1120px;
    margin: 0 auto;
    padding: 72px 24px 56px;
    text-align: center;
}

.hero-headline {
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.12;
    max-width: 820px;
    margin: 0 auto 18px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 660px;
    margin: 0 auto 12px;
    font-weight: 400;
}

.hero-payoff {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 660px;
    margin: 0 auto 36px;
    font-weight: 400;
}

/* Well-Styled Command Line Interface Showcase */
.hero-cli-window {
    max-width: 420px;
    margin: 0 auto 12px;
    background-color: #080b10;
    border: 1px solid var(--border-hover);
    border-radius: 8px;
    overflow: hidden;
    text-align: left;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.65);
}

.hero-cli-chrome {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 12px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-hairline);
}

.cli-dots-mac {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cli-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--border-hover);
}

.cli-title {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    flex: 1;
}

.cli-controls-win,
.cli-controls-linux {
    display: none;
    align-items: center;
    gap: 10px;
    font-family: var(--font-sans);
    font-size: 11px;
    color: var(--text-muted);
}

.linux-close-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--bg-elevated);
    font-size: 9px;
}

.hero-cli-window[data-os="windows"] .cli-dots-mac,
.hero-cli-window[data-os="linux"] .cli-dots-mac {
    display: none;
}

.hero-cli-window[data-os="windows"] .cli-controls-win {
    display: flex;
}

.hero-cli-window[data-os="linux"] .cli-controls-linux {
    display: flex;
}

.hero-cli-body {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.4;
}

.cli-cmd-bin {
    color: var(--text-primary);
    font-weight: 600;
}

.cli-cmd-arg {
    color: var(--accent-blue);
    font-weight: 500;
}

.cli-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background-color: var(--text-secondary);
    opacity: 0.75;
    vertical-align: middle;
}

/* Interactive Terminal Install Box */
.install-card {
    max-width: 540px;
    margin: 0 auto 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    border-radius: 6px;
    overflow: hidden;
    text-align: left;
}

.install-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-hairline);
    background-color: #080b0f;
    padding: 0 8px;
}

.install-tab {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    padding: 10px 14px;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.install-tab:hover {
    color: var(--text-primary);
}

.install-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--text-primary);
}

.install-command-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    gap: 12px;
}

.install-code-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
}

.prompt-token {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-muted);
    user-select: none;
    -webkit-user-select: none;
}

.install-command-text {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
}

.copy-cmd-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
    border-radius: 4px;
    padding: 5px 10px;
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.15s ease;
}

.copy-cmd-btn:hover {
    background-color: var(--bg-pill-active);
}

.copy-cmd-btn.copied {
    border-color: var(--accent-green);
    color: #7ee787;
}

.install-channel-note {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

/* Simple Static Hero Screenshot */
.hero-screenshot-frame {
    max-width: 980px;
    margin: 0 auto 36px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    border-radius: 6px;
    padding: 6px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.85);
}

.hero-screenshot-img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid var(--border-hairline);
}

/* 4-Card Architectural Bento Grid */
.section-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 56px 24px;
    border-top: 1px solid var(--border-hairline);
}

.section-header {
    margin-bottom: 32px;
}

.section-eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.section-title {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.bento-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    border-radius: 6px;
    padding: 22px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bento-badge {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.bento-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.bento-summary {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* CLI & Keyboard Muscle Memory Section */
.workbench-split {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
}

.panel-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    border-radius: 6px;
    padding: 24px;
}

.panel-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.panel-title {
    font-size: 16px;
    font-weight: 600;
}

.platform-pill-group {
    display: inline-flex;
    background-color: var(--bg-base);
    border: 1px solid var(--border-hairline);
    border-radius: 999px;
    padding: 2px;
}

.platform-pill {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    cursor: pointer;
}

.platform-pill.active {
    background-color: var(--bg-pill-active);
    color: var(--text-primary);
}

.shortcut-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.shortcut-table th,
.shortcut-table td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border-hairline);
    text-align: left;
}

.shortcut-table th {
    font-size: 11px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    color: var(--text-muted);
}

.kbd-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-hover);
    border-radius: 4px;
    padding: 2px 7px;
    color: var(--text-primary);
}

.cli-example-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cli-item {
    background-color: var(--bg-base);
    border: 1px solid var(--border-hairline);
    border-radius: 4px;
    padding: 10px 12px;
}

.cli-cmd {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cli-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Releases Matrix */
.releases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.release-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 14px;
}

.release-os {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.release-meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
}

/* Footer */
.site-footer {
    max-width: 1120px;
    margin: 0 auto;
    padding: 36px 24px 48px;
    border-top: 1px solid var(--border-hairline);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

.tamil-inscription {
    color: var(--text-secondary);
    font-size: 12px;
    cursor: help;
}

@media (max-width: 900px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .workbench-split,
    .releases-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }
    .nav-links {
        display: none;
    }
}