img {
        max-width: 100%;
        height: auto;
        }
        body {
            font-family: 'Poppins', sans-serif;
        }
        .hero-section {
            background: url('https://via.placeholder.com/1920x1080/007bff/FFFFFF?text=Profesyonel+Klima+Servisi') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 120px 0;
            position: relative;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .service-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .brand-logos img {
            max-height: 50px;
        }
        .brand-logos img:hover {
            filter: grayscale(0%);
            opacity: 1;
        }
        .navbar-brand img {
            max-height: 40px;
        }
/* ====================================================== */
/* ============= SAYFA BAŞLIĞI VE BREADCRUMB ALANI STİLLERİ ============ */
/* ====================================================== */

.page-header-section {
    background-color: #2c3e50; /* Koyu, profesyonel bir arka plan rengi */
    color: white;
    padding: 4rem 0; /* Alanın iç boşluğu */
    text-align: center;
    position: relative;
    background-image: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.85)), url('https://via.placeholder.com/1920x400/CCCCCC/FFFFFF?text=Adana+Klima+Teknik');
    background-size: cover;
    background-position: center;
}

.page-header-section h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-header-section .breadcrumb {
    background-color: transparent;
    justify-content: center;
    padding: 0;
    margin-bottom: 0;
}

.page-header-section .breadcrumb-item a {
    color: #18bc9c; /* Marka renginize veya istediğiniz bir renge göre değiştirin */
    text-decoration: none;
    transition: color 0.2s ease;
}

.page-header-section .breadcrumb-item a:hover {
    color: #ffffff;
}

.page-header-section .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.7);
}

/* Breadcrumb ayıracı rengi */
.page-header-section .breadcrumb-item+.breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* ====================================================== */
/* ============ SABİT EYLEM BUTONLARI STİLLERİ (GÜNCELLENMİŞ) ============ */
/* ====================================================== */

/* WhatsApp Butonu Stili (Tüm Cihazlar) */
.whatsapp-button {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background-color: #25D366; /* WhatsApp Yeşili */
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem; /* İkon boyutu */
    box-shadow: 2px 4px 8px rgba(0,0,0,0.2);
    z-index: 999;
    transition: transform 0.2s ease-in-out;
    text-decoration: none; /* EKLENEN SATIR: Link alt çizgisini kaldırır */
}

.whatsapp-button:hover {
    transform: scale(1.1);
    color: white; /* Üzerine gelince rengin değişmemesi için */
    text-decoration: none; /* EKLENEN SATIR: Üzerine gelince de çizgi olmasın */
}


/* Mobil Arama Butonu Stili (Sadece Mobil) */
.mobile-call-button {
    display: none; /* Masaüstünde gizli */
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #ff0000; /* Ana Renk Mavi veya istediğiniz bir renk */
    color: white;
    text-align: center;
    padding: 15px 0;
    font-size: 1.1rem;
    z-index: 1000;
    text-decoration: none; /* Burada zaten vardı, doğru */
    border-top: 1px solid #ff0000;
}


/* Mobil Cihazlar İçin Kırılım Noktası (Bootstrap'in 'lg' breakpoint'i baz alındı) */
@media (max-width: 992px) {
    
    /* Mobil arama butonunu görünür yap */
    .mobile-call-button {
        display: block;
    }

    /* WhatsApp butonunu, mobil arama butonunun üstüne taşı */
    .whatsapp-button {
        bottom: 85px; 
    }

}