:root {
    /* Logo Renkleri */
    --brand-dark: #1F2937; /* Koyu Gri/Lacivert */
    --brand-blue: #213555; /* Kurumsal Lacivert */
    --brand-green: #5D9C59; /* Yaprak Yeşili */
    --brand-light: #F3F4F6; /* Açık Gri */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--brand-dark);
    overflow-x: hidden;
}

a {
    text-decoration: none;
}

/* --- Navbar (Logonun olduğu alan) --- */
/* YENİ: Navbar yüksekliğini artırmak için padding eklendi */
.navbar {
    padding-top: 2px !important;
    padding-bottom: 2px !important;
}

.navbar-brand-custom {
    font-weight: 700;
    font-size: 1.6rem; /* Logo yazısı da biraz büyüdü */
    color: var(--brand-blue) !important;
}

.nav-link {
    color: var(--brand-dark);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 1.05rem; /* Linkler biraz daha belirgin */
}

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

/* --- Butonlar --- */
.btn-brand-primary {
    background-color: var(--brand-green);
    color: white;
    padding: 10px 30px;
    border-radius: 50px;
    border: 2px solid var(--brand-green);
    transition: all 0.3s;
}

    .btn-brand-primary:hover {
        background-color: var(--brand-blue);
        border-color: var(--brand-blue);
        color: white;
        transform: translateY(-3px);
    }

/* --- Sayfa Başlıkları (Diğer Sayfalar İçin) --- */
.page-header {
    background: linear-gradient(rgba(33, 53, 85, 0.9), rgba(33, 53, 85, 0.8)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=1920&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0 60px 0;
    margin-bottom: 50px;
}

/* --- Slider (Carousel) --- */
.carousel-item {
    height: 85vh;
    min-height: 600px;
    background: no-repeat center center scroll;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.carousel-overlay {
    background: rgba(31, 41, 55, 0.5);
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

.carousel-caption {
    bottom: 30%;
    z-index: 10;
}

    .carousel-caption h1 {
        font-size: 3.5rem;
        font-weight: 800;
        text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
        margin-bottom: 20px;
    }

/* --- Parallax Efekti --- */
.parallax-section {
    background-image: url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?q=80&w=1920&auto=format&fit=crop');
    min-height: 400px;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
}

.overlay-dark {
    background-color: rgba(33, 53, 85, 0.85);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* --- Kart Tasarımları --- */
.hover-top {
    transition: transform 0.3s;
}

    .hover-top:hover {
        transform: translateY(-10px);
    }

.service-card {
    border: none;
    transition: transform 0.3s, box-shadow 0.3s;
    border-bottom: 4px solid var(--brand-green);
}

    .service-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }

.stat-box {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-bottom: 5px solid var(--brand-green);
    text-align: center;
    transition: transform 0.3s;
}

    .stat-box:hover {
        transform: translateY(-5px);
    }

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--brand-blue);
    display: block;
}

/* --- Proje Kartları --- */
.project-card {
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

    .project-card:hover {
        transform: translateY(-5px);
    }

.project-img-wrapper {
    height: 250px;
    overflow: hidden;
    position: relative;
}

    .project-img-wrapper img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s;
    }

.project-card:hover .project-img-wrapper img {
    transform: scale(1.1);
}

.project-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--brand-green);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}


/* --- Bölüm Başlığı Çizgisi --- */
.section-header {
    position: relative;
    display: block; /* "inline-block" yerine "block" yaptık */
    margin-bottom: 3rem;
    text-align: center; /* Yazıyı ortalar */
}

    .section-header::after {
        content: '';
        display: block;
        width: 60px;
        height: 4px;
        background: var(--brand-green);
        margin: 15px auto 0; /* Çizgiyi ortalar */
        border-radius: 2px;
    }

/* --- Footer --- */
footer {
    background-color: var(--brand-blue);
    color: white;
    padding-top: 50px;
}