:root {
    --bg-color: #0f172a;
    --text-color: #f1f5f9;
    --muted-color: #94a3b8;
    --accent-color: #3b82f6;
    --card-bg: #1e293b;
    --border-color: #334155;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.6;
    background-image: radial-gradient(circle at top right, #1e293b, #0f172a 60%);
    background-attachment: fixed;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    padding: 4rem 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--muted-color);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

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

.btn-outline:hover {
    background-color: var(--card-bg);
}

section {
    padding: 4rem 0;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
}

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

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1rem;
    transition: border-color 0.2s;
}

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

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-color);
}

.mono {
    font-family: var(--font-mono);
    background: #00000044;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    color: #93c5fd;
}

pre {
    background: #000;
    padding: 1.5rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

.terminal-header {
    background: var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem 0.5rem 0 0;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--muted-color);
    border: 1px solid var(--border-color);
    border-bottom: none;
}

.terminal-block {
    margin: 1.5rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--card-bg);
    border-radius: 1rem;
    overflow: hidden;
}

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

th {
    background: #1e293b;
    font-weight: 600;
}

.status-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 1rem;
    font-weight: 600;
}

.status-implemented { background: #064e3b; color: #6ee7b7; }
.status-planned { background: #334155; color: #94a3b8; }

.roadmap {
    list-style: none;
}

.roadmap-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.roadmap-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.roadmap-done .roadmap-check {
    background: var(--accent-color);
    color: white;
}

.roadmap-done .roadmap-check::after {
    content: "✓";
}

.svg-container {
    background: #00000022;
    padding: 2rem;
    border-radius: 1rem;
    margin: 2rem 0;
    text-align: center;
    border: 1px solid var(--border-color);
}

footer {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--muted-color);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    .btn-group { flex-direction: column; }
}