:root {
    --bg-color: #0a0a0c;
    --surface-color: #16161a;
    --surface-hover: #1f1f24;
    --primary-color: #7f5af0;
    --primary-hover: #6644c9;
    --secondary-color: #2cb67d;
    --text-main: #fffffe;
    --text-muted: #94a1b2;
    --border-color: #2b2b33;
    --code-bg: #010101;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }

p { margin-bottom: 1.5rem; color: var(--text-muted); }

a { text-decoration: none; color: inherit; transition: 0.2s; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border-color);
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.nav-links a {
    margin-left: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-links a:hover { color: var(--primary-color); }

.btn-github {
    background: var(--surface-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-github:hover { background: var(--surface-hover); border-color: var(--text-muted); }

/* Hero */
.hero {
    padding-top: 180px;
    padding-bottom: 100px;
    background: radial-gradient(circle at 50% 0%, #2a2a35 0%, var(--bg-color) 50%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(127, 90, 240, 0.1);
    color: var(--primary-color);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(127, 90, 240, 0.2);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover { background: var(--surface-hover); }

/* Terminal Window */
.terminal-window {
    background: var(--code-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    overflow: hidden;
    font-family: var(--font-mono);
}

.terminal-header {
    background: var(--surface-color);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.dots {
    display: flex;
    gap: 6px;
    margin-right: 1rem;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-title {
    color: var(--text-muted);
    font-size: 0.8rem;
    flex-grow: 1;
    text-align: center;
    margin-right: 40px; /* balance dots */
}

.terminal-body {
    padding: 1.5rem;
    color: #2cb67d;
    font-size: 0.9rem;
    min-height: 300px;
}

.prompt { color: var(--primary-color); margin-right: 0.5rem; }
.cursor { animation: blink 1s infinite; }

@keyframes blink { 50% { opacity: 0; } }

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.9rem;
    margin: 0;
}

/* Architecture Section */
.arch-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.layer {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    position: relative;
    transition: transform 0.3s;
}

.layer:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
}

.layer-label {
    position: absolute;
    left: -120px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: right;
    width: 100px;
}

.components {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.comp {
    background: var(--bg-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 600;
}

.arrow-down {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.5rem;
}

/* Code Tabs */
.code-showcase {
    background: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 1rem 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 500;
    border-right: 1px solid var(--border-color);
    background: transparent;
    border-top: none;
    border-left: none;
    border-bottom: none;
    font-family: var(--font-sans);
}

.tab.active {
    background: var(--bg-color);
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.code-content {
    padding: 2rem;
    background: var(--bg-color);
    overflow-x: auto;
}

pre {
    font-family: var(--font-mono);
    color: #a2aabc;
}

.keyword { color: #ff5f56; }
.function { color: #7f5af0; }
.string { color: #2cb67d; }
.comment { color: #626c80; font-style: italic; }

/* Roadmap Section */
.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.roadmap-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.roadmap-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.roadmap-card h3 {
    color: var(--text-main);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
}

.roadmap-card p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.status-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-next { background: rgba(127, 90, 240, 0.15); color: var(--primary-color); border: 1px solid rgba(127, 90, 240, 0.3); }
.status-planned { background: rgba(44, 182, 125, 0.15); color: var(--secondary-color); border: 1px solid rgba(44, 182, 125, 0.3); }
.status-future { background: rgba(148, 161, 178, 0.15); color: var(--text-muted); border: 1px solid rgba(148, 161, 178, 0.3); }

/* Footer */
footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .arch-diagram { padding-left: 0; }
    .layer-label { position: static; text-align: center; width: auto; margin-bottom: 0.5rem; display: block; transform: none; }
}