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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border-color: #30363d;
    --accent-green: #238636;
    --accent-green-bright: #3fb950;
    --tile-correct: #538d4e;
    --tile-present: #b59f3b;
    --tile-absent: #3a3a3c;
    --tile-border: #3a3a3c;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 1rem 0;
}

.terminal-window {
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    max-width: 680px;
    margin: 0 auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    border-bottom: 1px solid var(--border-color);
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn.red { background: #ff5f56; }
.terminal-btn.yellow { background: #ffbd2e; }
.terminal-btn.green { background: #27ca40; }

.terminal-title {
    flex: 1;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-right: 48px;
}

.terminal-body {
    padding: 1.5rem;
}

.terminal-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.terminal-left {
    text-align: left;
    flex: 1;
}

.terminal-right {
    flex-shrink: 0;
}

.ascii-art {
    font-size: 1rem;
    line-height: 1.2;
    color: var(--accent-green-bright);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.hero-cta {
    margin-top: 1rem;
}

.quick-install {
    display: inline-block;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.75rem;
    border-radius: 5px;
    color: var(--accent-green-bright);
    font-size: 0.8rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.quick-install:hover {
    border-color: var(--accent-green);
}

/* Wordle Grid */
.wordle-grid {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.wordle-row {
    display: flex;
    gap: 4px;
}

.tile {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 3px;
    border: 2px solid var(--tile-border);
    background: var(--tile-border);
    color: var(--text-primary);
}

.tile.correct {
    background: var(--tile-correct);
    border-color: var(--tile-correct);
}

.tile.present {
    background: var(--tile-present);
    border-color: var(--tile-present);
}

.tile.absent {
    background: var(--tile-absent);
    border-color: var(--tile-absent);
}

.tile.empty {
    background: transparent;
    border-color: var(--tile-border);
}

.tile.animate {
    animation: flipIn 0.4s ease forwards;
    opacity: 0;
}

@keyframes flipIn {
    0% { transform: rotateX(90deg); opacity: 0; }
    100% { transform: rotateX(0); opacity: 1; }
}

/* Copyable elements */
.copyable {
    cursor: pointer;
    position: relative;
}

.install-card.copyable::after,
.quick-install.copyable::after,
.run-cmd code.copyable::after {
    content: 'Click to copy';
    font-size: 0.65rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}

.install-card.copyable::after {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.install-card.copyable:hover::after,
.quick-install.copyable:hover::after,
.run-cmd code.copyable:hover::after {
    opacity: 1;
}

.copyable.copied::after {
    content: 'Copied!';
    color: var(--accent-green-bright);
    opacity: 1;
}

.quick-install.copyable::after {
    display: block;
    margin-top: 0.35rem;
    text-align: center;
}

.run-cmd code.copyable::after {
    margin-left: 0.5rem;
}

/* Install Section */
.install-section {
    padding: 1.5rem 0;
    text-align: center;
}

.install-section h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.install-options {
    display: flex;
    gap: 0.75rem;
    max-width: 720px;
    margin: 0 auto;
}

.install-card {
    flex: 1;
    min-width: 180px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    text-align: left;
    transition: border-color 0.2s;
    position: relative;
}

.install-card:hover {
    border-color: var(--accent-green);
}

.install-card.recommended {
    border-color: var(--accent-green);
}

.install-label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.badge {
    background: var(--accent-green);
    color: white;
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.6rem;
    margin-left: 0.25rem;
}

.install-cmd {
    display: block;
    color: var(--accent-green-bright);
    font-size: 0.75rem;
}

.run-cmd {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.run-cmd code {
    background: var(--bg-tertiary);
    padding: 0.35rem 0.75rem;
    border-radius: 5px;
    margin-left: 0.5rem;
    color: var(--accent-green-bright);
    font-size: 0.95rem;
}

/* Features Section */
.features-section {
    padding: 1.5rem 0;
}

.features-section h2 {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    transition: border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--text-muted);
}

.feature-icon {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.feature-card h3 {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Keyboard Section */
.keyboard-section {
    padding: 1.5rem 0;
}

.keyboard-section h2 {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.keyboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    max-width: 500px;
    margin: 0 auto;
}

.key-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 5px;
    border: 1px solid var(--border-color);
}

kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 0.2rem 0.4rem;
    font-size: 0.7rem;
    color: var(--text-primary);
    font-family: inherit;
    min-width: 50px;
    text-align: center;
}

.key-item span {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* CTA Section */
.cta-section {
    padding: 1.5rem 0;
    text-align: center;
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.github-btn, .pypi-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}

.github-btn {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.github-btn:hover {
    background: white;
}

.github-btn svg {
    width: 18px;
    height: 18px;
}

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

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

/* Footer */
.footer {
    padding: 1.5rem 0 0.5rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.footer a {
    color: var(--accent-green-bright);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.heart {
    color: #f85149;
}

.license {
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.65rem;
}

/* Responsive */
@media (max-width: 650px) {
    .terminal-content {
        flex-direction: column;
        gap: 1.25rem;
    }

    .terminal-left {
        text-align: center;
    }

    .ascii-art {
        font-size: 0.8rem;
    }

    .tile {
        width: 32px;
        height: 32px;
        font-size: 0.95rem;
    }

    .install-options {
        flex-direction: column;
    }

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

    .cta-section {
        flex-direction: column;
        align-items: center;
    }

    .github-btn, .pypi-btn {
        width: 200px;
        justify-content: center;
    }
}

@media (max-width: 400px) {
    .features-grid,
    .keyboard-grid {
        grid-template-columns: 1fr;
    }
}