:root {
    --bg: #0b0c10;
    --card: #11131a;
    --text: #e6edf3;
    --muted: #9aa4b2;
    --accent: #64ffda;
    --accent-2: #7aa2ff;
    --ring: rgba(100, 255, 218, 0.6);
}

[data-theme="light"] {
    --bg: #f7f8fb;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --accent: #0ea5e9;
    --accent-2: #7c3aed;
}

* { 
    box-sizing: border-box; 
}

html, body { 
    height: 100%; 
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    background: radial-gradient(1200px 800px at 20% -10%, #0f1325, #0b0c10 55%);
    color: var(--text);
    line-height: 1.6;
    display: block;
    padding: 16px;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

/* Nav */
.nav {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    gap: 14px; 
    padding: 6px 4px; 
    position: sticky; 
    top: 0; 
    backdrop-filter: blur(6px);
}

.brand { 
    font-weight: 800; 
    letter-spacing: .4px; 
}

.nav-links { 
    display: flex; 
    gap: 10px; 
    flex-wrap: wrap; 
}

.nav a { 
    color: var(--muted); 
    text-decoration: none; 
    font-weight: 600; 
}

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

.toggle { 
    background: transparent; 
    border: 1px solid rgba(255,255,255,.18); 
    color: var(--text); 
    border-radius: 10px; 
    padding: 6px 10px; 
    cursor: pointer; 
}

header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 10px 16px;
}

h1 { 
    margin: 0; 
    font-size: clamp(32px, 6vw, 58px); 
    letter-spacing: 0.4px; 
    background: linear-gradient(90deg, var(--accent), var(--accent-2)); 
    -webkit-background-clip: text; 
    background-clip: text; 
    color: transparent; 
}

.tag { 
    color: var(--muted); 
    font-size: 14px; 
}

.intro {
    color: var(--muted);
    max-width: 70ch;
    margin-top: 4px;
}

/* Featured App Section */
.featured-section {
    margin: 32px 0;
}

.featured-title {
    margin: 0 0 16px 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.featured-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.featured-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.featured-content {
    flex: 1;
}

.featured-pill {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.featured-card h3 {
    margin: 8px 0 12px 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.featured-card p {
    margin: 0 0 16px 0;
    color: var(--muted);
    line-height: 1.6;
}

.featured-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.featured-stats span {
    font-size: 14px;
    color: var(--muted);
    font-weight: 500;
}

.featured-icon {
    font-size: 3rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.featured-card:hover .featured-icon {
    transform: scale(1.1) rotate(5deg);
    opacity: 1;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 8px;
}

.card {
    background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 14px;
    padding: 18px;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.card:hover { 
    transform: translateY(-2px); 
    border-color: rgba(100,255,218,.6); 
    box-shadow: 0 8px 24px rgba(0,0,0,.35); 
}

.card h2 { 
    margin: 0 0 6px; 
    font-size: 18px; 
}

.card p { 
    margin: 0; 
    color: var(--muted); 
    font-size: 14px; 
}

.pill {
    display: inline-flex; 
    align-items: center; 
    gap: 8px;
    background: rgba(100,255,218,.08);
    color: var(--accent);
    border: 1px solid rgba(100,255,218,.25);
    padding: 6px 10px; 
    border-radius: 999px; 
    font-size: 12px; 
    font-weight: 600;
}

footer { 
    color: var(--muted); 
    font-size: 12px; 
    margin-top: 12px; 
}

.links { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 10px; 
}

.cta {
    display: inline-block;
    margin-top: 6px;
    color: #0b0c10;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    padding: 10px 14px; 
    border-radius: 10px; 
    font-weight: 700; 
    text-decoration: none;
    box-shadow: 0 6px 16px rgba(100,255,218,.25);
}

/* Mobile responsiveness for featured card */
@media (max-width: 600px) {
    .featured-card {
        flex-direction: column;
        text-align: center;
        gap: 16px;
        padding: 20px;
    }
    .featured-stats {
        justify-content: center;
        gap: 12px;
    }
    .featured-stats span {
        font-size: 12px;
    }
    .featured-icon {
        font-size: 2.5rem;
    }
}

@media (prefers-color-scheme: light) {
    body { 
        background: radial-gradient(1200px 800px at 20% -10%, #e6ecff, var(--bg) 55%); 
    }
    .card { 
        background: #fff; 
        border-color: rgba(0,0,0,.06); 
    }
    .card:hover { 
        box-shadow: 0 10px 26px rgba(2,6,23,.08); 
    }
}