/* --- GENEL AYARLAR --- */
        :root {
            --primary-color: #0b2046;
            --accent-color: #e63946;
            --text-dark: #333333;
            --text-light: #ffffff;
            --bg-light: #f8f9fa;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Montserrat', sans-serif;
        }

        body {
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--bg-light);
        }

        a { text-decoration: none; }

        /* --- ÜST BİLGİ VE MENÜ (SABİT) --- */
        .top-bar {
            background-color: var(--primary-color);
            color: var(--text-light);
            font-size: 0.85rem;
            padding: 8px 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-left i, .top-bar-right i { margin-right: 5px; color: var(--accent-color); }
        .top-bar-right { display: flex; gap: 20px; }

        header {
            background-color: #ffffff;
            padding: 15px 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .logo { font-size: 1.8rem; font-weight: 700; color: var(--primary-color); }
        .logo span { color: var(--accent-color); }
        nav ul { list-style: none; display: flex; gap: 30px; }
        nav ul li a { color: var(--text-dark); font-weight: 500; transition: color 0.3s; }
        /* Aktif sayfa vurgusu */
        nav ul li a:hover, nav ul li a.active { color: var(--accent-color); }
        .btn-call {
            background-color: var(--accent-color);
            color: var(--text-light);
            padding: 10px 20px;
            border-radius: 5px;
            font-weight: 600;
        }

        /* --- SAYFA BAŞLIĞI (PAGE HEADER) --- */
        .page-header {
            background: linear-gradient(rgba(11, 32, 70, 0.8), rgba(11, 32, 70, 0.8)), 
                        url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
            padding: 80px 5%;
            text-align: center;
            color: var(--text-light);
        }
        .page-header h1 { font-size: 2.5rem; margin-bottom: 10px; }
        .breadcrumb { font-size: 0.95rem; font-weight: 500; }
        .breadcrumb a { color: var(--text-light); transition: color 0.3s; }
        .breadcrumb a:hover { color: var(--accent-color); }

        /* --- ÜRÜNLER / HİZMETLER KILAVUZU --- */
        .products-section {
            padding: 60px 5%;
        }
        .section-desc {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px auto;
            font-size: 1.1rem;
            color: #555;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 40px;
        }

        .product-card {
            background-color: #ffffff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.12);
        }

        .product-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .product-content {
            padding: 30px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .product-title {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .product-desc {
            color: #666;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .product-features {
            list-style: none;
            margin-bottom: 25px;
            flex-grow: 1;
        }
        .product-features li {
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: #444;
            display: flex;
            align-items: center;
        }
        .product-features li i {
            color: #25d366; /* Onay tiki yeşili */
            margin-right: 10px;
            font-size: 1.1rem;
        }

        .product-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        .btn-detail, .btn-quote {
            text-align: center;
            padding: 12px 0;
            border-radius: 5px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        .btn-detail {
            background-color: var(--bg-light);
            color: var(--primary-color);
            border: 1px solid #ddd;
        }
        .btn-detail:hover {
            background-color: #ddd;
        }
        .btn-quote {
            background-color: var(--accent-color);
            color: var(--text-light);
            border: 1px solid var(--accent-color);
        }
        .btn-quote:hover {
            background-color: transparent;
            color: var(--accent-color);
        }

        .btn-whatsapp {
            background-color: #25d366; /* WhatsApp Yeşili */
            color: var(--text-light);
            border: 1px solid #25d366;
            text-align: center;
            padding: 12px 0;
            border-radius: 5px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px; /* İkon ile yazı arasındaki boşluk */
        }
        .btn-whatsapp:hover {
            background-color: transparent;
            color: #25d366;
        }
        
        /* --- FOOTER VE MOBİL (SABİT) --- */
        footer {
            background-color: #051024;
            color: #b0b7c3;
            padding: 70px 5% 20px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 50px; }
        .footer-logo { font-size: 1.8rem; font-weight: 700; color: var(--text-light); margin-bottom: 20px; display: block; }
        .footer-logo span { color: var(--accent-color); }
        .footer-title { color: var(--text-light); font-size: 1.2rem; margin-bottom: 20px; font-weight: 600; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: #b0b7c3; transition: color 0.3s; }
        .footer-links a:hover { color: var(--text-light); }
        .footer-contact li { display: flex; margin-bottom: 15px; }
        .footer-contact i { color: var(--accent-color); margin-top: 5px; margin-right: 15px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 0.9rem; }

        .whatsapp-btn {
            position: fixed; bottom: 30px; right: 30px;
            background-color: #25d366; color: white; width: 60px; height: 60px;
            border-radius: 50%; display: flex; justify-content: center; align-items: center;
            font-size: 35px; box-shadow: 0 4px 15px rgba(0,0,0,0.2); z-index: 9999;
        }

        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .top-bar { flex-direction: column; text-align: center; gap: 10px; }
            nav ul { display: none; }
            .footer-grid { grid-template-columns: 1fr; }
            .product-actions { grid-template-columns: 1fr; } /* Butonlar mobilde alt alta dizersin */
        }