/* AlJefra OS — Website Stylesheet */
/* Dark theme, developer aesthetic */

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-purple: #bc8cff;
    --accent-orange: #d29922;
    --accent-red: #f85149;
    --code-bg: #161b22;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
}
a:hover { text-decoration: underline; }

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 0 2rem;
}

nav .nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

nav .logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav .nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.2s;
}
nav .nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
    background: radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.08) 0%, transparent 60%);
}

.hero h1 {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero .version-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-green);
    margin-bottom: 2rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #1f6feb);
    color: white;
}
.btn-primary:hover {
    opacity: 0.9;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    background: var(--border);
    text-decoration: none;
}

/* Stats Bar */
.stats {
    display: flex;
    gap: 3rem;
    justify-content: center;
    padding: 2rem;
    margin: 0 auto;
    max-width: 800px;
}

.stat {
    text-align: center;
}

.stat .number {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.stat .label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Features Grid */
.features {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.features h2 {
    font-family: var(--font-mono);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: border-color 0.2s;
}
.feature-card:hover {
    border-color: var(--accent-blue);
}

.feature-card .icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.feature-card h3 {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Architecture Diagram */
.arch-section {
    max-width: 900px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.arch-section h2 {
    font-family: var(--font-mono);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
}

.arch-diagram {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.4;
    overflow-x: auto;
    white-space: pre;
    color: var(--text-secondary);
}

/* Code Block */
pre, code {
    font-family: var(--font-mono);
}

pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 1rem 0;
}

code {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85em;
}

pre code {
    background: none;
    padding: 0;
}

/* Content Sections */
.section {
    max-width: 1000px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.section h2 {
    font-family: var(--font-mono);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.section h3 {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    margin: 2rem 0 1rem;
    color: var(--accent-blue);
}

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

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    font-size: 0.9rem;
}

tr:hover td {
    background: var(--bg-secondary);
}

/* Doc Cards */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.doc-card {
    display: block;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: all 0.2s;
}
.doc-card:hover {
    border-color: var(--accent-blue);
    text-decoration: none;
    transform: translateY(-2px);
}

.doc-card h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.doc-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer a {
    color: var(--text-secondary);
}

/* Download Section */
.download-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    margin: 1.5rem 0;
}

.download-box h3 {
    font-family: var(--font-mono);
    margin-bottom: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .hero .tagline { font-size: 1.1rem; }
    .stats { flex-wrap: wrap; gap: 1.5rem; }
    .hero .cta-buttons { flex-direction: column; }
    nav .nav-links { gap: 1rem; font-size: 0.8rem; }
    .features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    nav .nav-links { display: none; }
    .hero h1 { font-size: 1.8rem; }
}

/* Page header for subpages */
.page-header {
    padding: 6rem 2rem 2rem;
    text-align: center;
    background: radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.05) 0%, transparent 60%);
}

.page-header h1 {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}