/* 
 * AHT Yapı İnşaat - Global Tasarım Sistemi & CSS Küpesi
 * Vanilla CSS - Bootstrap 5 Uyumlu Modern UI/UX Yapısı
 */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;900&display=swap');

/* --- TASARIM SİSTEMİ DEĞİŞKENLERİ --- */
:root {
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Montserrat', sans-serif;

    /* Logo Uyumlu Canlı & Sıcak Renk Paleti */
    --color-primary: #04549e;       /* Logodaki Canlı Kraliyet Mavisi */
    --color-primary-rgb: 4, 84, 158;
    --color-secondary: #ffb300;     /* Sıcak Güneş Sarısı / Canlı Kehribar */
    --color-secondary-rgb: 255, 179, 0;
    --color-dark: #2c2520;          /* Sıcak Koyu Çikolata/Kömür (Sert siyah yerine) */
    --color-light: #fff8f0;         /* Yumuşak Krem */
    --color-bg-base: #fffbf5;       /* Açık Sıcak Fildişi/Krem Arka Plan */
    --color-bg-card: #ffffff;       /* Beyaz Kartlar */
    --color-text-main: #332d29;     /* Daha koyu ve keskin, okunabilirliği artırılmış ana metin */
    --color-text-muted: #6b5d52;    /* Yardımcı metinlerin kontrastı artırıldı */
    --color-border: #f5eada;        
    
    --shadow-sm: 0 2px 4px 0 rgba(4, 84, 158, 0.04);
    --shadow-md: 0 8px 16px -4px rgba(4, 84, 158, 0.06);
    --shadow-lg: 0 16px 24px -6px rgba(4, 84, 158, 0.08);
    --shadow-premium: 0 24px 32px -8px rgba(4, 84, 158, 0.1);

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius-lg: 16px;
    --border-radius-md: 8px;
}

/* --- GENEL SIFIRLAMALAR & YAZI TİPLERİ --- */
html, body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    background-color: var(--color-bg-base);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
    scroll-behavior: smooth;
    line-height: 1.7; /* İdeal okunabilirlik yüksekliği */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800; /* Güçlü görsel hiyerarşi */
    color: var(--color-dark);
    line-height: 1.25;
    transition: color var(--transition-normal);
    letter-spacing: -0.015em;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}
a:hover {
    color: var(--color-secondary);
}

/* Özel Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
    border: 2px solid var(--color-bg-base);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

/* --- BOOTSTRAP OVERRIDES --- */
.card {
    background-color: var(--color-bg-card);
    border: none; /* Sadelik ve minimalizm için border kaldırıldı */
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px -15px rgba(4, 84, 158, 0.06);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.btn-primary {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    padding: 10px 24px;
    transition: all var(--transition-fast);
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-secondary) !important;
    border-color: var(--color-secondary) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--color-secondary-rgb), 0.3);
}

.btn-outline-primary {
    color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    padding: 10px 24px;
    transition: all var(--transition-fast);
}
.btn-outline-primary:hover {
    background-color: var(--color-primary) !important;
    color: #ffffff !important;
    transform: translateY(-2px);
}

/* --- PREMIUM NAVIGASYON (HEADER) --- */
.navbar-custom {
    background-color: rgba(var(--color-bg-card), 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-normal), border-color var(--transition-normal), padding var(--transition-normal);
    z-index: 1050;
}
.navbar-brand img {
    height: 50px;
    transition: height var(--transition-normal);
}
.nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-main) !important;
    padding: 8px 16px !important;
    position: relative;
    transition: color var(--transition-fast);
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 16px;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast);
}
.nav-link:hover::after, .nav-link.active::after {
    width: calc(100% - 32px);
}
.nav-link:hover, .nav-link.active {
    color: var(--color-primary) !important;
}

/* Yapışkan (Sticky) Küçülen Header */
.navbar-scrolled {
    padding-top: 5px !important;
    padding-bottom: 5px !important;
    box-shadow: var(--shadow-md);
}

/* --- PREMIUM KAHRAMAN (HERO) ALANI --- */
.hero-section {
    position: relative;
    padding: 180px 0 120px 0;
    background: radial-gradient(circle at 10% 20%, rgba(var(--color-primary-rgb), 0.08) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(var(--color-secondary-rgb), 0.08) 0%, transparent 40%);
    overflow: hidden;
}
.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.15;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 24px;
}
@media (max-width: 991.9px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-section {
        padding: 120px 0 80px 0;
    }
}
.hero-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
}
.hero-image-wrapper img {
    transition: transform var(--transition-slow);
}
.hero-image-wrapper:hover img {
    transform: scale(1.03);
}

/* --- HİZMET & KATEGORİ KARTLARI --- */
.service-card {
    height: 100%;
    cursor: pointer;
    overflow: hidden;
}
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium);
    border-color: var(--color-secondary);
}
.service-icon-box {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(var(--color-primary-rgb), 0.08);
    color: var(--color-primary);
    border-radius: var(--border-radius-md);
    font-size: 1.8rem;
    margin-bottom: 24px;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
.service-card:hover .service-icon-box {
    background-color: var(--color-secondary);
    color: #ffffff;
    transform: scale(1.1) rotate(5deg);
}

/* --- BEFORE/AFTER SLIDER (ÖNCESİ SONRASI) --- */
.before-after-container {
    position: relative;
    width: 100%;
    height: 400px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    touch-action: pan-y;
    border: 1px solid var(--color-border);
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}
.ba-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}
.ba-after-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
}
.ba-after-wrapper img {
    max-width: none;
}
.ba-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: #ffffff;
    cursor: ew-resize;
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    z-index: 10;
}
.ba-handle-line {
    width: 100%;
    height: 100%;
    background: #ffffff;
}
.ba-handle-button {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate(-50%, -50%);
    border: 3px solid #ffffff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.25);
    font-size: 1.1rem;
    transition: background-color var(--transition-fast);
}
.ba-handle:hover .ba-handle-button {
    background-color: var(--color-secondary);
}
.ba-label {
    position: absolute;
    top: 20px;
    padding: 8px 16px;
    background: rgba(0,0,0,0.65);
    color: #ffffff;
    font-weight: 700;
    border-radius: 20px;
    font-size: 0.8rem;
    z-index: 5;
    pointer-events: none;
    backdrop-filter: blur(4px);
    letter-spacing: 1.5px;
    font-family: var(--font-heading);
}
.label-before { right: 20px; }
.label-after  { left: 20px; z-index: 15; }


/* --- MODERN FORM UX --- */
.form-control {
    background-color: var(--color-bg-base);
    border: 1px solid var(--color-border);
    color: var(--color-text-main) !important;
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}
.form-control:focus {
    background-color: var(--color-bg-card);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.15);
    outline: none;
}

/* --- PREMIUM FOOTER --- */
.footer-premium {
    background-color: var(--color-light);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    padding: 80px 0 30px 0;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}
.footer-heading {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    color: var(--color-text-muted);
}
.footer-links a:hover {
    color: var(--color-secondary);
    padding-left: 4px;
}
.social-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-border);
    color: var(--color-text-main);
    border-radius: 50%;
    margin-right: 10px;
    transition: all var(--transition-fast);
}
.social-icon:hover {
    background-color: var(--color-secondary);
    color: #ffffff;
    transform: translateY(-3px);
}

/* --- UI/UX İYİLEŞTİRMELERİ (MADDE 6 & 7) --- */

/* Yüksek Kontrastlı Uyarılar (WCAG Uyumluluk) */
.alert-success {
    background-color: #d1e7dd !important;
    border-color: #a3cfbb !important;
    color: #0f5132 !important;
    font-weight: 500;
}
.alert-danger {
    background-color: #f8d7da !important;
    border-color: #f5c2c7 !important;
    color: #842029 !important;
    font-weight: 500;
}

/* Mobilde ve Tabletlerde Ekran Boyutu İyileştirmeleri */
@media (max-width: 991px) {
    .admin-main {
        padding: 20px !important;
    }
}

@media (max-width: 767px) {
    /* Öncesi Sonrası Slider Mobilde Daha Küçük Yükseklik */
    .before-after-container {
        height: 260px !important;
    }
    
    /* Kahraman Bölümü Mobilde Küçültme */
    .hero-title {
        font-size: 2.2rem !important;
        line-height: 1.25 !important;
    }
    
    /* Mobil Padding İyileştirmeleri */
    .py-5 {
        padding-top: 2.5rem !important;
        padding-bottom: 2.5rem !important;
    }
    
    /* Form elemanları padding sıkıştırması */
    .form-control {
        padding: 10px 14px !important;
    }
}

/* Form Doğrulama Stil Desteği */
.form-control:invalid:focus {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25) !important;
}
.form-control:valid:focus {
    border-color: #198754 !important;
    box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.25) !important;
}