* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: #2c3e50;
    color: #fff;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    transition: 0.3s;
    font-weight: 500;
}

nav ul li a:hover, nav ul li a.active {
    background: #e67e22;
    border-radius: 5px;
}

.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Main */
main {
    margin-top: 80px;
    min-height: calc(100vh - 250px);
}

/* Page Header */
.page-header {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../uploads/header-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 80px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../uploads/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: #e67e22;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    transition: 0.3s;
    font-weight: 600;
}

.btn-primary:hover {
    background: #d35400;
    transform: translateY(-2px);
}

.btn-detail {
    display: inline-block;
    color: #e67e22;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.btn-detail:hover {
    color: #d35400;
    transform: translateX(5px);
}

/* Section Titles */
.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: #e67e22;
}

/* Hizmetler */
.hizmetler {
    padding: 80px 0;
    background: #f9f9f9;
}

.hizmet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.hizmet-card {
    background: #fff;
    padding: 40px 30px;
    text-align: center;
    border-radius: 10px;
    transition: 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.hizmet-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.hizmet-card .icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.hizmet-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #2c3e50;
}

/* Hakkımızda Özet */
.hakkimizda-ozet {
    padding: 80px 0;
}

.hakkimizda-icerik {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.hakkimizda-icerik h4 {
    color: #e67e22;
    font-size: 18px;
    margin-bottom: 10px;
}

.hakkimizda-icerik h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.istatistikler {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
    text-align: center;
}

.istatistik {
    flex: 1;
    min-width: 150px;
}

.istatistik .sayi {
    font-size: 48px;
    font-weight: 700;
    color: #e67e22;
    display: block;
}

.istatistik .label {
    font-size: 16px;
    color: #666;
}

/* Projeler Grid */
.son-projeler, .projeler-grid {
    padding: 80px 0;
    background: #f9f9f9;
}

.proje-grid, .projeler-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.proje-card, .proje-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    transition: 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.proje-card:hover, .proje-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.proje-img {
    height: 250px;
    overflow: hidden;
}

.proje-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.3s;
}

.proje-card:hover .proje-img img, .proje-item:hover .proje-img img {
    transform: scale(1.05);
}

.proje-info {
    padding: 20px;
}

.proje-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.proje-info p {
    color: #666;
    margin-bottom: 15px;
}

.text-center {
    text-align: center;
}

/* Projeler Filtre */
.projeler-filtre {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filtre-btn {
    background: transparent;
    border: 2px solid #e67e22;
    color: #e67e22;
    padding: 10px 25px;
    border-radius: 30px;
    cursor: pointer;
    transition: 0.3s;
    font-weight: 500;
}

.filtre-btn:hover, .filtre-btn.active {
    background: #e67e22;
    color: #fff;
}

/* Proje Detay */
.proje-detay {
    max-width: 900px;
    margin: 0 auto;
    padding: 50px 0;
}

.proje-detay-img {
    margin-bottom: 30px;
    border-radius: 10px;
    overflow: hidden;
}

.proje-detay-img img {
    width: 100%;
    border-radius: 10px;
}

.proje-detay-ozet {
    font-size: 18px;
    color: #555;
    margin-bottom: 30px;
    padding: 20px;
    background: #f5f5f5;
    border-radius: 10px;
    border-left: 4px solid #e67e22;
}

.proje-detay-aciklama h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.proje-detay-aciklama p {
    line-height: 1.8;
    margin-bottom: 20px;
}

.proje-detay-tarih {
    margin: 30px 0;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 5px;
}

.proje-detay-link {
    margin-top: 30px;
}

/* Kurumsal Sayfası */
.kurumsal-icerik {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 60px 0;
}

.kurumsal-metin h2 {
    font-size: 28px;
    margin: 30px 0 15px;
    color: #2c3e50;
}

.kurumsal-metin h2:first-child {
    margin-top: 0;
}

.kurumsal-metin ul {
    list-style: none;
}

.kurumsal-metin ul li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.kurumsal-metin ul li::before {
    content: '✓';
    color: #e67e22;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.kurumsal-img img {
    width: 100%;
    border-radius: 10px;
}

/* İletişim Sayfası */
.iletisim-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 60px 0;
}

.iletisim-bilgi h2, .iletisim-form h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.bilgi-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.bilgi-item .icon {
    font-size: 24px;
    width: 50px;
    height: 50px;
    background: #f5f5f5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bilgi-item .info strong {
    display: block;
    margin-bottom: 5px;
    color: #2c3e50;
}

.iletisim-form form {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #e67e22;
}

.alert {
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
footer {
    background: #2c3e50;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #e67e22;
}

.footer-col p, .footer-col ul {
    line-height: 1.8;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li a {
    color: #ccc;
    text-decoration: none;
    transition: 0.3s;
}

.footer-col ul li a:hover {
    color: #e67e22;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #888;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .kurumsal-icerik, .iletisim-wrapper {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #2c3e50;
        padding: 20px;
    }
    
    nav ul.active {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .proje-grid, .projeler-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
}