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

        :root {
            --primary: #0c4248;
            --primary-light: #105a62;
            --primary-dark: #083238;
            --accent: #1a9ba8;
            --text-light: #ffffff;
            --text-muted: #b8d4d7;
            --bg-light: #f8fafb;
            --border: #e2eef0;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--bg-light);
            color: var(--primary-dark);
            line-height: 1.6;
        }

                /* ========== Loading ========== */
         #loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s ease-out;
        }

        #loading-overlay.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .loading-container {
            text-align: center;
        }

        /* Spinner Style 1: Circle Spinner */
        .spinner {
            width: 60px;
            height: 60px;
            border: 5px solid rgba(255, 255, 255, 0.2);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 30px;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* Spinner Style 2: Dots (uncomment to use instead) */
        .dots-spinner {
            display: none; /* Change to 'flex' to use this spinner */
            gap: 12px;
            margin: 0 auto 30px;
        }

        .dot {
            width: 15px;
            height: 15px;
            background-color: var(--accent);
            border-radius: 50%;
            animation: bounce 1.4s infinite ease-in-out both;
        }

        .dot:nth-child(1) { animation-delay: -0.32s; }
        .dot:nth-child(2) { animation-delay: -0.16s; }

        @keyframes bounce {
            0%, 80%, 100% { transform: scale(0); }
            40% { transform: scale(1); }
        }

        /* Loading Text */
        .loading-text {
            color: var(--primary-dark);
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }

        .loading-subtext {
            color: var(--accent);
            font-size: 14px;
            font-weight: 400;
        }

        /* Animated dots after text */
        .loading-text::after {
            content: '';
            animation: dots 1.5s steps(4, end) infinite;
        }

        @keyframes dots {
            0%, 20% { content: ''; }
            40% { content: '.'; }
            60% { content: '..'; }
            80%, 100% { content: '...'; }
        }

        /* Progress bar (optional) */
        .progress-bar {
            width: 200px;
            height: 4px;
            background-color: whitesmoke;
            border-radius: 2px;
            margin: 20px auto 0;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background-color: var(--accent);
            border-radius: 2px;
            animation: progress 2s ease-in-out infinite;
        }

        @keyframes progress {
            0% { width: 0%; transform: translateX(0); }
            50% { width: 70%; }
            100% { width: 100%; transform: translateX(0); }
        }

        #main-content {
            opacity: 0;
            transition: opacity 0.5s ease-in;
        }

        #main-content.visible {
            opacity: 1;
        }

        /* Navigation */
        nav {
            background: white;
            padding: 10px 0;
            box-shadow: 0 2px 10px rgba(12, 66, 72, 0.1);
            position: sticky;
            border-radius: 12px;
            top: 0;
            z-index: 100;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .logo-text {
            font-size: 24px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .nav-links a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .btn-login {
            padding: 10px 10px;
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(12, 66, 72, 0.2);
            color: var(--primary-dark);
            background: whitesmoke;
        }

        /* Mobile Menu Toggle */
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 5px;
        }

        .mobile-menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* Hero Section */
        .hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 30px 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 56px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 24px;
        }

        .hero-content .highlight {
            background: linear-gradient(135deg, var(--accent) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 20px;
            color: #64748b;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 16px 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(12, 66, 72, 0.3);
        }

        .btn-secondary {
            padding: 16px 36px;
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 10px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-secondary:hover {
            background: var(--primary);
            color: white;
        }

        .hero-visual {
            position: relative;
        }

        .hero-card {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 20px 60px rgba(12, 66, 72, 0.15);
            position: relative;
        }

        .card-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 24px;
        }

        .card-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
        }

        .card-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--primary);
        }

        .card-subtitle {
            color: #64748b;
            font-size: 14px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }

        .stat-item {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 12px;
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 4px;
        }

        .stat-label {
            color: #64748b;
            font-size: 14px;
        }

        /* Features Section */
        .features-section {
            background: white;
            padding: 100px 20px;
        }

        .section-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 42px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 18px;
            color: #64748b;
            max-width: 600px;
            margin: 0 auto;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }

        .feature-card {
            padding: 32px;
            border-radius: 16px;
            background: var(--bg-light);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(12, 66, 72, 0.1);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            background: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            color: #64748b;
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 20px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 42px;
            color: white;
            margin-bottom: 20px;
        }

        .cta-section p {
            font-size: 20px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }

        .btn-cta {
            padding: 18px 48px;
            background: white;
            color: var(--primary);
            border: none;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 255, 255, 0.3);
        }

        /* Footer */
        footer {
            background: var(--primary-dark);
            color: var(--text-muted);
            padding: 40px 20px;
            text-align: center;
        }

        footer p {
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            gap: 24px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: white;
        }

        /* Responsive Design */
        @media (max-width: 968px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 30px;
                box-shadow: 0 10px 30px rgba(12, 66, 72, 0.2);
                transition: left 0.3s ease;
                gap: 20px;
            }

            .nav-links.active {
                left: 0;
            }

            .mobile-menu-toggle {
                display: flex;
            }

            .hero {
                grid-template-columns: 1fr;
                padding: 50px 20px;
                gap: 40px;
            }

            .hero-content h1 {
                font-size: 38px;
            }

            .hero-content p {
                font-size: 18px;
            }

            .hero-buttons {
                flex-direction: column;
            }

            .btn-primary, .btn-secondary {
                width: 100%;
                text-align: center;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .section-header h2 {
                font-size: 32px;
            }

            .cta-section h2 {
                font-size: 32px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .hero-content h1 {
                font-size: 32px;
            }

            .logo-text {
                font-size: 20px;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .hero-card {
                padding: 24px;
            }
            .nav-container {
                padding: 10px 10px;
            }

        }