/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0d2137;
    --primary-light: #1a3a6b;
    --primary-dark: #0a1a2a;
    --secondary: #f5b041;
    --secondary-light: #f7c96a;
    --secondary-dark: #d49530;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --bg: #f0f4f9;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-lg: 24px;
    --transition: 0.3s ease;
}

body {
    font-family: 'Inter', 'Hind Siliguri', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: var(--primary-light);
    transition: var(--transition);
}
a:hover { color: var(--secondary); }

img { max-width: 100%; height: auto; }

/* ==================== TOP BAR ==================== */
.top-bar {
    background: var(--primary-dark);
    color: #b0c4de;
    padding: 6px 0;
    font-size: 0.78rem;
    border-bottom: 2px solid var(--secondary);
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.top-bar-left { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.top-bar-left span { color: var(--secondary); }
.top-bar .social-icons { display: flex; gap: 12px; }
.top-bar .social-icons a {
    color: #b0c4de;
    font-size: 0.85rem;
    transition: var(--transition);
}
.top-bar .social-icons a:hover {
    color: var(--secondary);
    transform: translateY(-2px);
}

/* ==================== LANGUAGE BAR ==================== */
.lang-bar {
    background: var(--primary);
    padding: 6px 0;
    position: sticky;
    top: 0;
    z-index: 1001;
    box-shadow: 0 2px 15px rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(245, 176, 65, 0.2);
}
.lang-container {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 6px;
}
.lang-btn {
    background: transparent;
    color: var(--secondary);
    border: 1.5px solid var(--secondary);
    padding: 3px 14px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.7rem;
    letter-spacing: 0.3px;
}
.lang-btn:hover,
.lang-btn.active-lang {
    background: var(--secondary);
    color: var(--primary);
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(245, 176, 65, 0.3);
}

/* ==================== HEADER ==================== */
.header-main {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}
.header-main::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), #e8c84a, var(--secondary));
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}
@keyframes shimmer {
    0%, 100% { background-position: -200% 0; }
    50% { background-position: 200% 0; }
}
.header-main.header-scrolled {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    padding: 4px 0;
}
.header-main.header-scrolled + * { margin-top: 120px; }

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-area img {
    height: 80px;
    width: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
}
.logo-area img:hover { transform: scale(1.03); }
.logo-text {
    border-left: 3px solid var(--secondary);
    padding-left: 12px;
}
.logo-text h1 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}
.logo-text h1 .highlight { color: var(--secondary); }
.logo-text .subtitle {
    font-size: 0.7rem;
    color: #b0c4de;
    font-weight: 400;
}
.logo-text .subtitle i { color: var(--secondary); margin-right: 4px; }

/* ==================== NAVIGATION ==================== */
.nav-wrapper {
    background: rgba(13, 33, 55, 0.85);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 0 10px;
    border: 1px solid rgba(245, 176, 65, 0.15);
}
.nav-menu {
    display: flex;
    gap: 2px;
    flex-wrap: wrap;
    align-items: center;
}
.nav-item {
    text-decoration: none;
    color: #e8f0fe;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 30px;
    transition: var(--transition);
    cursor: pointer;
    font-size: 0.82rem;
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
    border: none;
    background: transparent;
}
.nav-item:hover,
.nav-item.active {
    background: var(--secondary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 176, 65, 0.3);
}
.nav-item .fa-chevron-down {
    font-size: 0.6rem;
    transition: var(--transition);
}
.nav-item:hover .fa-chevron-down { transform: rotate(180deg); }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    min-width: 240px;
    border-radius: var(--radius);
    padding: 6px 0;
    z-index: 1000;
    margin-top: 4px;
    border: 1px solid rgba(245, 176, 65, 0.2);
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
    animation: dropdownFade 0.25s ease;
}
@keyframes dropdownFade {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.dropdown:hover .dropdown-content { display: block; }
.dropdown-content a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    text-decoration: none;
    color: #e8f0fe;
    font-weight: 400;
    transition: var(--transition);
    font-size: 0.82rem;
}
.dropdown-content a:hover {
    background: rgba(245, 176, 65, 0.12);
    color: var(--secondary);
    padding-left: 22px;
}
.dropdown-content a i {
    color: var(--secondary);
    width: 18px;
    font-size: 0.9rem;
}
.dropdown-content a .sub-badge {
    background: var(--secondary);
    color: var(--primary);
    font-size: 0.55rem;
    padding: 1px 8px;
    border-radius: 20px;
    font-weight: 700;
    margin-left: auto;
}

/* ==================== MOBILE MENU ==================== */
.mobile-menu-icon {
    display: none;
    font-size: 1.6rem;
    color: var(--secondary);
    cursor: pointer;
    background: rgba(245, 176, 65, 0.1);
    padding: 8px 16px;
    border-radius: 30px;
    border: 1px solid rgba(245, 176, 65, 0.2);
    transition: var(--transition);
}
.mobile-menu-icon:hover { background: rgba(245, 176, 65, 0.2); }

@media (max-width: 992px) {
    .nav-wrapper {
        background: transparent;
        border: none;
        padding: 0;
        width: 100%;
        order: 3;
    }
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: var(--primary);
        padding: 15px;
        border-radius: var(--radius);
        border: 1px solid rgba(245, 176, 65, 0.15);
        margin-top: 8px;
    }
    .nav-menu.active { display: flex; }
    .nav-item {
        width: 100%;
        padding: 10px 16px;
        font-size: 0.9rem;
        justify-content: center;
    }
    .dropdown { width: 100%; }
    .dropdown-content {
        position: static;
        display: none;
        width: 100%;
        box-shadow: none;
        border: none;
        padding: 0;
        margin-top: 4px;
        background: rgba(0,0,0,0.2);
        border-radius: var(--radius);
        animation: none;
    }
    .dropdown.active .dropdown-content { display: block; }
    .dropdown-content a { padding: 8px 20px; font-size: 0.85rem; }
    .mobile-menu-icon { display: block; }
}

@media (max-width: 768px) {
    .logo-area img { height: 60px; }
    .logo-text h1 { font-size: 0.9rem; }
    .logo-text .subtitle { font-size: 0.6rem; }
    .top-bar { font-size: 0.65rem; }
    .top-bar .social-icons a { font-size: 0.7rem; }
}

/* ==================== HERO / SLIDER ==================== */
.hero-full {
    position: relative;
    width: 100%;
    min-height: 400px;
    height: 80vh;
    max-height: 600px;
    overflow: hidden;
    background: var(--primary);
}
.hero-slider {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
}
.hero-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center 30%;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    filter: brightness(0.4) contrast(1.05);
}
.hero-slide.active { opacity: 1; z-index: 1; }
.hero-full::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(13, 33, 55, 0.7) 0%, rgba(26, 58, 107, 0.5) 100%);
    z-index: 1;
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 850px;
    margin: 0 auto;
    padding: 50px 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 400px;
    height: 80vh;
    max-height: 600px;
    color: white;
}
.hero-highlight {
    display: inline-block;
    background: rgba(245, 176, 65, 0.15);
    backdrop-filter: blur(4px);
    border-left: 4px solid var(--secondary);
    padding: 6px 16px;
    border-radius: 0 30px 30px 0;
    font-size: 1rem;
    font-weight: 600;
    align-self: center;
    margin-bottom: 12px;
}
.hero-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.hero-content .subtitle-hero {
    font-size: 1.1rem;
    color: var(--secondary);
    font-weight: 500;
    margin-bottom: 10px;
}
.hero-content p {
    font-size: 1rem;
    max-width: 650px;
    margin: 0 auto 20px;
    opacity: 0.9;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 15px;
}
.hero-stats .stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--secondary);
    display: block;
    line-height: 1.2;
}
.hero-stats div { text-align: center; font-weight: 500; }

/* Carousel Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: var(--secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    z-index: 5;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(245, 176, 65, 0.5);
}
.carousel-arrow:hover {
    background: var(--secondary);
    color: var(--primary);
    transform: translateY(-50%) scale(1.05);
}
.carousel-arrow-left { left: 15px; }
.carousel-arrow-right { right: 15px; }

/* Dots */
.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 0; right: 0;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 10px;
}
.dot {
    width: 10px;
    height: 10px;
    background: rgba(255,255,240,0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    padding: 0;
}
.dot.active-dot {
    background: var(--secondary);
    transform: scale(1.3);
    box-shadow: 0 0 12px var(--secondary);
}

@media (max-width: 768px) {
    .hero-content h2 { font-size: 1.8rem; }
    .hero-highlight { font-size: 0.8rem; padding: 4px 12px; }
    .hero-stats { gap: 20px; }
    .hero-stats .stat-number { font-size: 1.5rem; }
    .carousel-arrow { width: 32px; height: 32px; font-size: 14px; }
}

/* ==================== SECTION TITLES ==================== */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin: 50px 0 30px;
    position: relative;
    padding-bottom: 16px;
}
.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--secondary);
    border-radius: 4px;
}
.section-title.center-title { text-align: center; }
.section-title.center-title:after {
    left: 50%;
    transform: translateX(-50%);
}
.section-title .highlight { color: var(--secondary); }

/* ==================== CARDS ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px 22px;
    box-shadow: var(--shadow);
    border: 1px solid #e8f0fe;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
    transform: scaleX(0);
    transition: var(--transition);
}
.card:hover::before { transform: scaleX(1); }
.card:hover {
    transform: translateY(-8px);
    border-color: var(--secondary);
    box-shadow: var(--shadow-hover);
}
.card-icon {
    background: rgba(245, 176, 65, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}
.card-icon i { font-size: 28px; color: var(--secondary); }
.card h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 12px;
}
.card p { color: var(--text-light); }
.card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-top: 15px;
}
.read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    color: var(--secondary);
    font-weight: 600;
    transition: var(--transition);
}
.read-more:hover {
    gap: 14px;
    color: var(--primary);
}

/* ==================== NOTIFICATION BAR ==================== */
.notification-bar {
    background: var(--secondary);
    color: var(--primary);
    padding: 10px 0;
    font-weight: 600;
    text-align: center;
    border-radius: 50px;
    margin: 15px 0;
    font-size: 0.9rem;
    box-shadow: 0 2px 15px rgba(245, 176, 65, 0.2);
    animation: pulse-bg 2s ease-in-out infinite;
}
@keyframes pulse-bg {
    0%, 100% { background: var(--secondary); }
    50% { background: var(--secondary-light); }
}
.notification-bar i { margin-right: 8px; }

/* ==================== FOOTER ==================== */
.footer {
    background: var(--primary-dark);
    color: #b0c4de;
    padding: 50px 0 20px;
    margin-top: 50px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 35px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--secondary);
    border-radius: 3px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
}
.footer-col ul li {
    margin-bottom: 8px;
}
.footer-col ul li a {
    color: #b0c4de;
    transition: var(--transition);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-col ul li a:hover {
    color: var(--secondary);
    padding-left: 5px;
}
.footer-col ul li a i { color: var(--secondary); font-size: 0.7rem; }

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 0.85rem;
}
.contact-info li i {
    color: var(--secondary);
    margin-top: 3px;
    min-width: 16px;
}

.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}
.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    color: #b0c4de;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
}
.footer-social a:hover {
    background: var(--secondary);
    color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    font-size: 0.8rem;
    color: #8899aa;
}
.footer-bottom a {
    color: #b0c4de;
    transition: var(--transition);
}
.footer-bottom a:hover { color: var(--secondary); }
.footer-bottom p:first-child { margin-bottom: 5px; }

@media (max-width: 992px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
    .footer-grid { grid-template-columns: 1fr; }
}

/* ==================== BREADCRUMB ==================== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    font-size: 0.85rem;
    color: var(--text-light);
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--primary-light);
    transition: var(--transition);
}
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb .separator { color: var(--secondary); }
.breadcrumb .current { color: var(--text); font-weight: 500; }

/* ==================== PAGE HEADER ==================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
    padding: 40px 0 30px;
    position: relative;
    margin-bottom: 30px;
}
.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: url('../images/banner/1.jpg') center/cover;
    opacity: 0.08;
    mix-blend-mode: overlay;
}
.page-header-content {
    position: relative;
    z-index: 2;
}
.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.page-header .breadcrumb {
    color: #b0c4de;
    padding: 0;
}
.page-header .breadcrumb a { color: #b0c4de; }
.page-header .breadcrumb a:hover { color: var(--secondary); }
.page-header .breadcrumb .current { color: var(--secondary); }

/* ==================== UTILITY CLASSES ==================== */
.text-center { text-align: center; }
.text-muted { color: var(--text-light); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }
.p-20 { padding: 20px; }
.p-40 { padding: 40px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.btn-primary {
    background: var(--secondary);
    color: var(--primary);
}
.btn-primary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(245, 176, 65, 0.4);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}
.btn-outline:hover {
    background: var(--white);
    color: var(--primary);
}
.btn-dark {
    background: var(--primary);
    color: var(--white);
}
.btn-dark:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* ==================== CONTACT FORM ==================== */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e8f0fe;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(245, 176, 65, 0.15);
}
.form-group textarea { resize: vertical; }

/* ==================== MAP ==================== */
.map-container iframe {
    width: 100%;
    height: 300px;
    border-radius: var(--radius);
    border: none;
}

/* ==================== ANIMATIONS ==================== */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity;
}
[data-aos].aos-animate {
    opacity: 1;
}