/* ── Ovidhan Ecosystem – Dark Premium Theme ── */
:root {
    --bg: #0B1F1A;
    --surface: #122820;
    --surface2: #1A3530;
    --border: #1E3D38;
    --gold: #E6B84A;
    --gold-dim: rgba(230, 184, 74, 0.12);
    --teal: #4ECDC4;
    --text: #D8EDEB;
    --text-mid: #8AADA9;
    --text-soft: #5A7D79;
    --radius: 12px;
    --font-bn: 'Hind Siliguri', sans-serif;
    --font-en: 'Inter', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-bn);
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ── HEADER / MEGA MENU ── */
.site-header {
    background: rgba(11, 31, 26, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
}
.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: -0.5px;
}
.logo span { color: var(--text); }

/* Mega Menu */
.mega-menu { display: flex; gap: 6px; flex-wrap: wrap; }
.mega-menu > li { list-style: none; position: relative; }
.mega-menu > li > a {
    color: var(--text-mid);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-family: var(--font-en);
    font-weight: 500;
    transition: 0.2s;
    display: block;
}
.mega-menu > li > a:hover,
.mega-menu > li:hover > a {
    background: var(--surface2);
    color: var(--gold);
}
.dropdown {
    position: absolute;
    top: 40px;
    left: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: 0.25s ease;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    z-index: 100;
}
.mega-menu > li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown a {
    display: block;
    padding: 6px 0;
    color: var(--text-mid);
    font-size: 14px;
    border-bottom: 1px solid transparent;
    transition: 0.2s;
}
.dropdown a:hover { color: var(--gold); padding-left: 6px; }

/* Mobile Toggle */
.menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 28px; cursor: pointer; }

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .mega-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 20px 0;
        background: var(--surface);
        border-top: 1px solid var(--border);
    }
    .mega-menu.open { display: flex; }
    .mega-menu > li { width: 100%; }
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 20px;
        display: none;
    }
    .mega-menu > li:hover .dropdown { display: block; }
    .mega-menu > li > a { padding: 10px 0; }
}

/* ── FOOTER ── */
.site-footer {
    background: #060F0D;
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 40px 20px;
    color: var(--text-soft);
    font-size: 14px;
    margin-top: 40px;
}
.site-footer a { color: var(--teal); }
.site-footer a:hover { color: var(--gold); }

/* ── HUB PAGES ── */
.hub-hero {
    background: linear-gradient(160deg, #0A2828 0%, #1A5C5A 100%);
    padding: 50px 20px;
    text-align: center;
    border-radius: var(--radius);
    margin: 20px 0 40px;
}
.hub-hero h1 { font-size: 2.8rem; color: var(--gold); }
.hub-hero p { max-width: 600px; margin: 10px auto 0; color: var(--text-mid); }
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}
.hub-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: 0.3s;
}
.hub-card:hover { transform: translateY(-6px); border-color: var(--gold); }
.hub-card h3 { color: #fff; margin-bottom: 6px; }
.hub-card p { color: var(--text-mid); font-size: 0.95rem; }
.hub-card .tag {
    display: inline-block;
    background: var(--gold-dim);
    color: var(--gold);
    font-size: 0.7rem;
    padding: 2px 12px;
    border-radius: 20px;
    font-family: var(--font-en);
    margin-top: 10px;
}

/* ── UTILITIES ── */
.text-gold { color: var(--gold); }
.text-mid { color: var(--text-mid); }
.mb-20 { margin-bottom: 20px; }
.mt-20 { margin-top: 20px; }
.btn {
    display: inline-block;
    background: var(--gold);
    color: #0B1F1A;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 40px;
    border: none;
    cursor: pointer;
    font-family: var(--font-en);
    transition: 0.2s;
}
.btn:hover { background: #f0c85a; transform: scale(1.02); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--gold);
    color: var(--gold);
}
.btn-outline:hover { background: var(--gold); color: #0B1F1A; }