body {
    margin: 0;
    font-family: "Inter", sans-serif;
    background: #f5f7fa;
    color: #222;
}

.hero {
    background: linear-gradient(135deg, #0d1b2a, #1b263b);
    color: #fff;
    padding: 40px 20px 100px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}

.hero-content {
    text-align: center;
    margin-top: 80px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.cta-btn {
    display: inline-block;
    padding: 12px 24px;
    background: #e0e1dd;
    color: #1b263b;
    font-weight: bold;
    text-decoration: none;
    border-radius: 6px;
    margin-top: 20px;
}

.section {
    max-width: 1100px;
    margin: 60px auto;
    padding: 0 20px;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 25px;
    text-align: center;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.more-btn {
    display: inline-block;
    margin-top: 10px;
    color: #1b263b;
    font-weight: 600;
    text-decoration: none;
}

.dark {
    background: #1b263b;
    color: #e0e1dd;
    padding: 60px 20px;
}

.stack-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.stack-list span {
    background: #415a77;
    padding: 8px 14px;
    border-radius: 6px;
    color: #fff;
    font-size: 0.9rem;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 60px;
    background: #0d1b2a;
    color: #fff;
}

/* ===== Documentation Pages ===== */
.subpage-header {
    text-align: center;
    padding: 60px 20px;
    background: #1b263b;
    color: #e0e1dd;
}

.doc-container {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}

.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

.doc-card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    text-decoration: none;
    color: #222;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.doc-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
}

.doc-content {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

.doc-content h2 {
    margin-top: 40px;
}