:root {
            --primary-blue: #0b2545;
            --accent-blue: #134074;
            --bright-teal: #17c3b2;
            --light-bg: #f8f9fa;
            --dark-text: #1d2d44;
            --muted-text: #6c757d;
            --border-color: #e9ecef;
        }

        body {
            font-family: 'Sarabun', sans-serif;
            color: var(--dark-text);
            background-color: var(--light-bg);
            margin: 0;
            padding: 0;
            line-height: 1.6;
        }

        h1, h2, h3, h4, h5, h6, .font-heading {
            font-family: 'Prompt', sans-serif;
        }

        /* Top Bar */
        .top-bar {
            background-color: var(--primary-blue);
            color: #d0d7de;
            font-size: 0.85rem;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .top-bar a {
            color: #d0d7de;
            text-decoration: none;
            transition: color 0.2s;
        }

        .top-bar a:hover {
            color: #ffffff;
        }

        /* Main Navigation */
        .navbar-main {
            background: #ffffff;
            box-shadow: 0 2px 15px rgba(0,0,0,0.04);
            padding: 12px 0;
            sticky: top;
        }

        .navbar-brand img {
            height: 48px;
            margin-right: 12px;
        }

        .brand-title {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary-blue);
            line-height: 1.2;
        }

        .brand-subtitle {
            font-size: 0.78rem;
            color: var(--muted-text);
            letter-spacing: 0.5px;
        }

        .nav-link {
            font-family: 'Prompt', sans-serif;
            font-weight: 500;
            color: var(--dark-text);
            padding: 8px 16px !important;
            border-radius: 6px;
            transition: all 0.2s;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent-blue);
            background-color: #f0f4f8;
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, rgba(11, 37, 69, 0.92), rgba(19, 64, 116, 0.85)), 
                        url('https://images.unsplash.com/photo-1577495508048-b635879837f1?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
            color: #ffffff;
            padding: 80px 0 90px 0;
            position: relative;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            font-weight: 300;
            opacity: 0.9;
            margin-bottom: 35px;
        }

        /* Search Box Component */
        .search-wrapper {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            padding: 8px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            max-width: 680px;
            margin: 0 auto;
        }

        .search-wrapper .form-control {
            border: none;
            background: #ffffff;
            border-radius: 40px;
            padding: 14px 25px;
            font-size: 1rem;
            box-shadow: none;
        }

        .search-wrapper .btn-search {
            background: var(--bright-teal);
            color: #ffffff;
            border-radius: 40px;
            padding: 12px 30px;
            font-family: 'Prompt', sans-serif;
            font-weight: 600;
            border: none;
            transition: background 0.2s;
        }

        .search-wrapper .btn-search:hover {
            background: #14a899;
        }

        /* Quick E-Services Grid */
        .service-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px 20px;
            text-align: center;
            text-decoration: none;
            color: var(--dark-text);
            display: block;
            transition: all 0.25s ease-in-out;
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.06);
            border-color: var(--accent-blue);
            color: var(--accent-blue);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background: #edf2f7;
            color: var(--accent-blue);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 15px;
            transition: all 0.25s;
        }

        .service-card:hover .service-icon {
            background: var(--accent-blue);
            color: #ffffff;
        }

        .service-title {
            font-family: 'Prompt', sans-serif;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0;
        }

        /* Section Title Styling */
        .section-header {
            margin-bottom: 40px;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary-blue);
            position: relative;
            display: inline-block;
        }

        .section-subtitle {
            color: var(--muted-text);
            font-size: 0.95rem;
        }

        /* News Section Tabs & Cards */
        .news-tab .nav-link {
            border: none;
            color: var(--muted-text);
            font-weight: 500;
            padding: 8px 20px !important;
            border-radius: 30px;
            margin-right: 8px;
        }

        .news-tab .nav-link.active {
            background-color: var(--primary-blue);
            color: #ffffff;
        }

        .news-card {
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.2s, box-shadow 0.2s;
            height: 100%;
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
        }

        .news-img {
            height: 190px;
            object-fit: cover;
            width: 100%;
        }

        .news-body {
            padding: 20px;
        }

        .news-badge {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 20px;
            background: #e2e8f0;
            color: var(--accent-blue);
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-date {
            font-size: 0.82rem;
            color: var(--muted-text);
        }

        /* Live Dashboard Banner */
        .dashboard-banner {
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
            color: #ffffff;
            border-radius: 16px;
            padding: 35px 30px;
        }

        .stat-box {
            text-align: center;
            padding: 15px;
            border-right: 1px solid rgba(255,255,255,0.15);
        }

        .stat-box:last-child {
            border-right: none;
        }

        .stat-number {
            font-family: 'Prompt', sans-serif;
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--bright-teal);
        }

        .stat-label {
            font-size: 0.9rem;
            opacity: 0.85;
        }

        /* Footer */
        .footer-main {
            background-color: var(--primary-blue);
            color: #a0aec0;
            padding: 60px 0 20px 0;
            font-size: 0.9rem;
        }

        .footer-title {
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #a0aec0;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.82rem;
            text-align: center;
        }
    /* แสดง Dropdown Menu อัตโนมัติเมื่อ Hover บนหน้าจอคอมพิวเตอร์ (Desktop) */
@media (min-width: 992px) {
    /* เมื่อชี้ที่ .dropdown หรือ .nav-item ให้แสดง .dropdown-menu */
    .navbar .nav-item.dropdown:hover > .dropdown-menu {
        display: block;
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
    }

    /* ตั้งค่าเริ่มต้นสำหรับ Animation เลื่อนลง (Slide Down Effect) */
    .navbar .dropdown-menu {
        display: block;
        visibility: hidden;
        opacity: 0;
        transform: translateY(10px);
        transition: all 0.25s ease-in-out;
        margin-top: 0; /* ป้องกันระยะห่างขาดตอนระหว่างปุ่มกับเมนูย่อย */
    }
}