* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #2563eb;
            --secondary-color: #0ea5e9;
            --accent-color: #f59e0b;
            --dark-bg: #0f172a;
            --light-bg: #f8fafc;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --border-color: #e2e8f0;
            --success-color: #10b981;
            --danger-color: #ef4444;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--light-bg);
        }
        
        /* Header */
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .logo i { /* Style for Font Awesome icon in logo */
            font-size: 1.8rem; /* Adjust as needed */
            color: white; /* Or var(--accent-color) for a pop */
        }

        .logo::before { /* Remove or comment out if you prefer the FA icon */
            content: "✈️";
            font-size: 2rem;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            transition: opacity 0.3s;
            font-weight: 500;
        }
        
        .nav-links a:hover {
            opacity: 0.8;
        }
        
        .subscribe-btn {
            background: var(--accent-color);
            padding: 0.6rem 1.5rem;
            border-radius: 25px;
            font-weight: bold;
            transition: transform 0.3s;
        }
        
        .subscribe-btn:hover {
            transform: translateY(-2px);
        }
        
        /* Hero Section */
        .hero {
            margin-top: 80px;
            padding: 4rem 5%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 10%, transparent 10%);
            background-size: 20px 20px;
            animation: float 20s linear infinite;
        }
        
        @keyframes float {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-50%, -50%) rotate(360deg); }
        }
        
        .hero-content {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            animation: fadeInUp 0.8s ease-out;
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 0.8s ease-out 0.2s both;
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* Main Title in Main Content */
        .main-title {
            font-size: 2rem;
            margin-bottom: 2rem;
            color: var(--text-primary);
        }

        /* Centered Section Title */
        .section-title-center {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
        }
        /* Search Bar */
        .search-section {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            margin: -3rem 5% 3rem;
            position: relative;
            z-index: 100;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .search-bar {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }
        
        .search-input {
            flex: 1;
            min-width: 200px;
            padding: 1rem;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        
        .search-btn {
            background: var(--primary-color);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .search-btn:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }
        
        /* Specific Ad Banner Styles */
        .ad-banner-main-bottom {
            margin: 3rem 0; /* Replicates previous inline style */
        }

        .ad-banner-sidebar {
            height: 250px; /* Replicates previous inline style */
            margin: 0 0 2rem 0; /* Replicates previous inline style */
        }

        .ad-banner-footer {
            /* Default .ad-banner styles are likely fine, or add specific margin if needed */
        }
        /* Ad Space */
        .ad-banner {
            background: #f3f4f6;
            border: 2px dashed #d1d5db;
            padding: 2rem;
            text-align: center;
            margin: 2rem 5%;
            border-radius: 10px;
            color: #6b7280;
            font-weight: 500;
            min-height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }
        
        .ad-banner:hover {
            background: #e5e7eb;
            border-color: #9ca3af;
        }
        
        /* Main Content */
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5%;
        }
        
        /* Flight Deals Grid */
        .deals-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .deal-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: all 0.3s;
            cursor: pointer;
        }
        
        .deal-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        }
        
        .deal-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1.5rem;
            position: relative;
        }
        
        .deal-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--accent-color);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: bold;
        }
        
        .website-name {
            font-size: 1.3rem;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }
        
        .website-rating {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .stars {
            color: #fbbf24;
        }
        
        .deal-content {
            padding: 1.5rem;
        }
        
        .deal-features {
            list-style: none;
            margin-bottom: 1.5rem;
        }
        
        .deal-features li {
            padding: 0.5rem 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .deal-features li::before {
            /* content: "✓"; */ /* Remove if using Font Awesome icon exclusively */
            color: var(--success-color);
            font-weight: bold;
        }

        .deal-features li i.fa-check { /* Style for Font Awesome checkmark */
            color: var(--success-color);
            margin-right: 0.5rem;
        }
        
        .price-highlight {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        
        .visit-btn {
            width: 100%;
            background: var(--primary-color);
            color: white;
            padding: 1rem;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .visit-btn:hover {
            background: var(--secondary-color);
            transform: scale(1.02);
        }
        
        /* Sidebar */
        .sidebar {
            position: sticky;
            top: 100px;
            height: fit-content;
        }
        
        .sidebar-widget {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }
        
        .widget-title {
            font-size: 1.2rem;
            font-weight: bold;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        
        .trending-list {
            list-style: none;
        }
        
        .trending-list li {
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s;
        }
        
        .trending-list li:hover {
            padding-left: 0.5rem;
            color: var(--primary-color);
        }
        
        .trending-list li:last-child {
            border-bottom: none;
        }
        
        .price-tag {
            background: var(--success-color);
            color: white;
            padding: 0.2rem 0.8rem;
            border-radius: 15px;
            font-size: 0.85rem;
            font-weight: bold;
        }
        
        /* Newsletter Form Styling */
        .sidebar-widget.newsletter form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .sidebar-widget.newsletter input[type="email"] { /* More specific selector */
            width: 100%; /* Ensure it takes full width within the form */
        }
        /* Newsletter */
        .newsletter {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1.5rem;
            border-radius: 15px;
            text-align: center;
        }
        
        .newsletter button {
            width: 100%;
            background: var(--accent-color);
            color: white;
            padding: 0.8rem;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .newsletter button:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        
        /* Features Section */
        .features {
            background: white;
            padding: 4rem 5%;
            margin-top: 3rem;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .feature {
            text-align: center;
            padding: 2rem;
            border-radius: 15px;
            transition: all 0.3s;
        }
        
        .feature:hover {
            background: var(--light-bg);
            transform: translateY(-5px);
        }
        
        .feature-icon {
            font-size: 3rem; /* Base size */
            color: var(--primary-color); /* Add color to icons */
            display: flex; /* For centering if needed */
            justify-content: center; /* For centering if needed */
            margin-bottom: 1rem;
        }
        
        .feature h3 {
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        
        /* Footer */
        footer {
            background: var(--dark-bg);
            color: white;
            padding: 3rem 5%;
            margin-top: 4rem;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer-section h4 {
            margin-bottom: 1rem;
        }
        
        .footer-section ul {
            list-style: none;
        }
        
        .footer-section a {
            color: #94a3b8;
            text-decoration: none;
            line-height: 2;
            transition: color 0.3s;
        }
        
        .footer-section a:hover {
            color: white;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }
        
        .social-links a {
            display: flex; /* Use flex for centering icon */
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            transition: all 0.3s;
        }
        
        .social-links a:hover {
            background: var(--secondary-color); /* Change hover color */
            transform: translateY(-3px);
        }
        .social-links i { /* Style for Font Awesome icons in social links */
            color: white;
            font-size: 1.2rem; /* Adjust as needed */
        }

        /* Footer Bottom */
        .footer-bottom {
            text-align: center;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #334155; /* Or use var(--border-color) if it fits the dark theme */
            color: #94a3b8; /* Lighter text for contrast */
        }
        .footer-bottom a { color: #94a3b8; text-decoration: none; transition: color 0.3s; }
        .footer-bottom a:hover { color: white; }
        
        /* Responsive */
        @media (max-width: 768px) {
            .nav-links { /* Hide by default on mobile, will be shown by JS */
                display: none;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .main-content {
                grid-template-columns: 1fr;
            }
            
            .sidebar {
                position: static;
            }
            
            .deals-grid {
                grid-template-columns: 1fr;
            }

            /* Mobile Menu Button */
            .mobile-menu-btn {
                display: block !important; /* Ensure it's shown on mobile, overriding inline style if any */
                background: none;
                border: none;
                color: white;
                font-size: 1.8rem; /* Slightly larger for easier tapping */
                cursor: pointer;
                z-index: 1001; /* Above other nav content */
            }

            nav {
                position: relative; /* For positioning the dropdown menu */
            }

            .nav-links {
                position: absolute;
                top: 100%; /* Position below the header */
                left: 0;
                width: 100%;
                background: var(--dark-bg); /* Or a slightly lighter dark shade */
                flex-direction: column;
                align-items: flex-start; /* Align items to the start */
                padding: 1rem 5%;
                box-shadow: 0 8px 16px rgba(0,0,0,0.2);
                transform: translateY(-10px); /* Start slightly up */
                opacity: 0;
                visibility: hidden;
                transition: transform 0.3s ease-out, opacity 0.3s ease-out, visibility 0.3s;
            }
            .nav-links.active { /* Styles for when the menu is open */
                display: flex !important; /* Override the initial display:none */
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links li { width: 100%; } /* Make list items take full width */
            .nav-links a { display: block; padding: 0.8rem 0; width: 100%; } /* Make links full width for easier tapping */
        }