:root {
    --green-dark: #2e7d32;
    --green-mid: #388e3c;
    --green-light: #4caf50;
    --green-pale: #e8f5e9;
    --maroon: #7b1fa2;
    --orange: #f57c00;
    --gray-bg: #f5f5f5;
    --border: #ddd;
    --text-dark: #212121;
    --text-mid: #424242;
    --white: #ffffff;
}

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

body {
    font-family: 'Hind Siliguri', sans-serif;
    font-size: 14px;
    color: var(--text-dark);
    background: #fff;
}
a { text-decoration: none; color: inherit; }
a:hover { color: var(--green-dark); }

/* ── TOP BAR ── */
.top-bar {
    background: var(--green-dark);
    color: #fff;
    font-size: 12px;
    padding: 4px 0;
}
.top-bar a { color: #fff; margin-right: 10px; }
.top-bar a:hover { color: #c8e6c9; }

/* ── HEADER ── */
.site-header {
    background: #fff;
    padding: 12px 0;
    border-bottom: 3px solid var(--green-dark);
}
.site-header .logo-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}
.site-header .institute-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--green-dark);
    line-height: 1.3;
}
.site-header .institute-sub {
    font-size: 13px;
    color: var(--text-mid);
}

/* ── NAVBAR ── */
.main-nav {
    background: var(--green-dark);
}
.main-nav .navbar-nav .nav-link {
    color: #fff !important;
    font-size: 13px;
    padding: 10px 14px;
    transition: background .2s;
}
.main-nav .navbar-nav .nav-link:hover,
.main-nav .navbar-nav .nav-link.active {
    background: var(--orange);
}
.main-nav .navbar-toggler { border-color: rgba(255,255,255,.5); }
.main-nav .navbar-toggler-icon { filter: invert(1); }

/* ── HERO / SLIDER ── */
.hero-carousel .carousel-item img {
    height: 340px;
    object-fit: cover;
    width: 100%;
}
.hero-caption {
    background: rgba(0,0,0,.45);
    padding: 8px 16px;
}

/* ── NOTICE MARQUEE ── */
.notice-bar {
    background: var(--green-light);
    color: #fff;
    padding: 7px 0;
    font-size: 13px;
}
.notice-bar .label {
    background: var(--orange);
    padding: 4px 12px;
    font-weight: 700;
    white-space: nowrap;
}

/* ── SECTION HEADING ── */
.sec-heading {
    background: var(--green-dark);
    color: #fff;
    padding: 6px 14px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 3px 3px 0 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sec-heading i { font-size: 16px; }

/* ── NOTICE BOARD ── */
.notice-board { border: 1px solid var(--border); border-top: none; }
.notice-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 12px;
    border-bottom: 1px dashed var(--border);
    transition: background .15s;
}
.notice-item:hover { background: var(--green-pale); }
.notice-item .date-badge {
    background: var(--green-dark);
    color: #fff;
    font-size: 11px;
    text-align: center;
    padding: 3px 6px;
    border-radius: 3px;
    min-width: 48px;
    line-height: 1.4;
}
.notice-item .date-badge span { display: block; font-size: 16px; font-weight: 700; }
.notice-item .notice-text { flex: 1; font-size: 13px; line-height: 1.5; }
.notice-item .views { color: #888; font-size: 11px; }
.btn-more {
    background: var(--green-dark);
    color: #fff;
    font-size: 12px;
    padding: 5px 14px;
    border-radius: 3px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 8px;
    transition: background .2s;
}
.btn-more:hover { background: var(--orange); color: #fff; }

/* ── QUICK LINKS CARD ── */
.quick-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 18px;
}
.quick-card ul { list-style: none; padding: 0; margin: 0; }
.quick-card ul li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-bottom: 1px dashed var(--border);
    font-size: 13px;
    color: var(--text-dark);
    transition: color .15s, padding-left .15s;
}
.quick-card ul li a:hover { color: var(--green-dark); padding-left: 20px; }
.quick-card ul li a i { color: var(--green-dark); }

/* ── PERSON CARD (principal / etc.) ── */
.person-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 14px;
    text-align: center;
}
.person-card img {
    width: 100%;
    height: 304px;
    object-fit: cover;
    object-position: top;
}
.person-card .person-info {
    padding: 8px;
    background: var(--green-pale);
}
.person-card .person-info strong { display: block; font-size: 13px; color: var(--green-dark); }
.person-card .person-info span { font-size: 12px; color: #555; }

/* ── LINK GRID (2-col sections) ── */
.link-grid {
    border: 1px solid var(--border);
    border-top: none;
    padding: 10px 14px;
}
.link-grid-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px 0;
}
.link-grid-wrap a {
    font-size: 12.5px;
    color: var(--text-dark);
    padding: 5px 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    border-bottom: 1px dashed var(--border);
}
.link-grid-wrap a:hover { color: var(--green-dark); }
.link-grid-wrap a i { color: var(--green-mid); font-size: 13px; }

/* ── ACADEMIC LINK SIDEBAR ── */
.sidebar-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-bottom: 1px dashed var(--border);
    font-size: 13px;
    color: var(--text-dark);
}
.sidebar-links a:hover { color: var(--green-dark); background: var(--green-pale); }
.sidebar-links a i { color: var(--green-dark); }

/* ── NEWS / PHOTO CARDS ── */
.news-card { border: 1px solid var(--border); border-radius: 4px; overflow: hidden; height: 100%; }
.news-card img { width: 100%; height: 160px; object-fit: cover; }
.news-card .nc-body { padding: 10px; }
.news-card .nc-body p { font-size: 13px; line-height: 1.5; margin-bottom: 6px; }
.news-card .nc-body .updated { font-size: 11px; color: #888; }

.photo-card { border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.photo-card img { width: 100%; height: 130px; object-fit: cover; }
.photo-card .pc-cap { padding: 6px 8px; font-size: 12px; background: #f9f9f9; }

/* ── HOTLINE BADGES ── */
.hotline-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 10px;
    margin-bottom: 6px;
    font-size: 22px;
    font-weight: 700;
    color: var(--green-dark);
}
.hotline-badge .hl-label { font-size: 12px; color: #555; font-weight: 400; line-height: 1.3; }
.hotline-badge .hl-icon { font-size: 26px; }

/* ── MAP SECTION ── */
.map-wrapper { border: 1px solid var(--border); overflow: hidden; border-radius: 4px; }
.map-wrapper iframe { width: 100%; height: 300px; border: none; display: block; }

/* ── SOCIAL BAR ── */
.social-bar a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--green-dark);
    color: #fff;
    font-size: 18px;
    margin-right: 6px;
    transition: background .2s;
}
.social-bar a:hover { background: var(--orange); }

/* ── FOOTER ── */
.site-footer {
    background: #1b5e20;
    color: #c8e6c9;
    padding: 32px 0 16px;
}
.site-footer h6 { color: #fff; font-weight: 700; margin-bottom: 12px; font-size: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 6px; }
.site-footer ul li a { color: #c8e6c9; font-size: 13px; }
.site-footer ul li a:hover { color: #fff; }
.site-footer .footer-contact p { font-size: 13px; margin-bottom: 5px; }
.site-footer .footer-contact i { color: #81c784; margin-right: 6px; }
.footer-bottom {
    background: #145214;
    color: #a5d6a7;
    font-size: 12px;
    padding: 10px 0;
    text-align: center;
    margin-top: 20px;
}

/* ── UTILITY ── */
.section-wrap { margin-bottom: 22px; }
.bg-gray { background: var(--gray-bg); }
.audio-player { background: var(--green-pale); border: 1px solid var(--border); padding: 8px 10px; border-radius: 4px; }
.audio-player audio { width: 100%; }

@media (max-width: 768px) {
    .hero-carousel .carousel-item img { height: 200px; }
    .site-header .institute-name { font-size: 16px; }
    .link-grid-wrap { grid-template-columns: 1fr; }
}