/* --- 1. TEMEL AYARLAR VE FONT --- */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Montserrat:wght@400;600;700&display=swap');

:root {
    --primary-color: #003366; /* Koyu Lacivert */
    --accent-color: #00a8cc; /* Turkuaz */
    --text-dark: #333333;
    --text-light: #f4f4f4;
    --bg-light: #f9f9f9;
}

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* Yatay taşmayı engelle */
    padding-top: 0px; /* Navbar fixed olduğu için içeriği aşağı itiyoruz */
}

h1, h2, h3, h4, h5 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

a { text-decoration: none; }

/* --- 2. ÜST BİLGİ ÇUBUĞU (Top Bar) --- */
/* Mobilde yer kaplamasın diye gizliyoruz, masaüstünde görünür */
.top-bar {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 0;
    font-size: 0.85rem;
}

/* --- 3. NAVBAR (MENÜ) --- */
.navbar {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    padding: 10px 0;
    transition: all 0.3s ease;
}

.navbar-brand img {
    max-height: 55px; /* Logo boyutu */
}

.nav-link {
    color: var(--primary-color) !important;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    margin-left: 15px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-color) !important;
}

/* Menüdeki İletişim Butonu */
.btn-contact {
    background-color: var(--accent-color);
    color: white !important;
    padding: 10px 20px;
    border-radius: 5px;
    text-align: center;
}

.btn-contact:hover {
    background-color: var(--primary-color);
    color: white !important;
}

/* --- 4. MOBİL MENÜ DÜZENLEMELERİ (ÖNEMLİ) --- */
@media (max-width: 991px) { /* Tablet ve Mobil için */
    body {
        padding-top: 70px; /* Mobilde navbar yüksekliği kadar boşluk */
    }

    .navbar-toggler {
        border: none;
        padding: 0;
        color: var(--primary-color);
    }
    
    .navbar-toggler:focus {
        box-shadow: none; /* Mavi çerçeveyi kaldır */
    }

    /* Mobilde açılan menü kutusu */
    .navbar-collapse {
        background-color: #ffffff;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        border-top: 3px solid var(--accent-color);
        z-index: 1000;
    }

    .nav-link {
        margin-left: 0;
        padding: 12px 0;
        border-bottom: 1px solid #eee;
        display: block;
    }

    /* Mobilde buton tam genişlik olsun */
    .btn-contact {
        margin-top: 15px;
        display: block;
        width: 100%; 
    }
    
    /* Dropdown menüler mobilde açık renk olsun */
    .dropdown-menu {
        border: none;
        background-color: #f8f9fa;
        margin-top: 0;
        box-shadow: none;
        padding-left: 15px;
    }
}

/* --- 5. ANA SAYFA HERO ALANI --- */
.hero-slider {
    background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.7)), url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    /* Mobilde yükseklik sorunu olmaması için min-height kullanıyoruz */
    min-height: 80vh; 
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
    padding: 60px 0; /* İçerik taşarsa diye boşluk */
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}

/* Mobil Hero Ayarı */
@media (max-width: 768px) {
    .hero-slider {
        min-height: auto; /* Sabit yüksekliği kaldır */
        padding: 100px 0 60px 0;
    }
    .hero-content h1 {
        font-size: 2rem; /* Mobilde fontu küçült */
    }
    .hero-content .btn {
        display: block;
        width: 100%; /* Mobilde butonlar alt alta ve tam boy */
        margin-bottom: 10px;
    }
    .d-flex.justify-content-center.gap-3 {
        flex-direction: column; /* Butonları alt alta diz */
        gap: 10px !important;
    }
}

/* --- 6. SAYFA BAŞLIKLARI (Header) --- */
.page-header {
    background: linear-gradient(rgba(0, 51, 102, 0.9), rgba(0, 51, 102, 0.8)), url('https://images.unsplash.com/photo-1581093458791-9f3c3900df4b?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    padding: 80px 0;
    color: white;
    text-align: center;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .page-header {
        padding: 50px 0;
    }
    .page-header h1 {
        font-size: 1.8rem;
    }
}

.breadcrumb {
    justify-content: center;
    background: transparent;
    padding: 0;
    margin-bottom: 0;
}
.breadcrumb-item a { color: var(--accent-color); }
.breadcrumb-item.active { color: #ccc; }

/* --- 7. GENEL İÇERİK KARTLARI --- */
.service-box {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
    transition: 0.3s;
    text-align: center;
    border-bottom: 4px solid transparent;
    height: 100%; /* Kartları eşit boy yapar */
}

.service-box:hover {
    transform: translateY(-5px);
    border-bottom: 4px solid var(--accent-color);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

/* --- 8. FOOTER --- */
footer {
    background-color: #1a1a1a;
    color: #bbb;
    padding: 60px 0 20px;
    margin-top: 50px;
}

footer h4 {
    color: white;
    margin-bottom: 20px;
    border-left: 3px solid var(--accent-color);
    padding-left: 10px;
    font-size: 1.2rem;
}

footer a {
    color: #bbb;
    transition: 0.3s;
    display: block;
    margin-bottom: 8px;
}

footer a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

/* Mobil Footer */
@media (max-width: 768px) {
    footer {
        text-align: center;
    }
    footer h4 {
        border-left: none;
        border-bottom: 2px solid var(--accent-color);
        display: inline-block;
        padding-bottom: 5px;
        padding-left: 0;
        margin-top: 30px;
    }
    /* Mobilde ikon ve yazı hizalamaları */
    .col-lg-3 p i {
        display: block;
        font-size: 1.5rem;
        margin-bottom: 5px;
        margin-right: 0 !important;
    }
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    margin-top: 40px;
    text-align: center;
    font-size: 0.85rem;
}