:root {
    --primary: #2c3e50;
    --accent: #e67e22; /* Salim Yapı Turuncusu */
    --bg: #ffffff;
    --text: #333333;
    --card-bg: #f9f9f9;
    --border: #dddddd;
}

/* Koyu Tema Ayarları */
#theme-toggle:checked ~ * {
    --bg: #121212;
    --text: #ffffff; /* Yazılar artık tam beyaz */
    --card-bg: #1e1e1e;
    --border: #333333;
    --primary: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Roboto', sans-serif; }
html { scroll-behavior: smooth; }

body { background-color: var(--bg); color: var(--text); transition: 0.3s; line-height: 1.6; }

/* Menü */
.menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background: var(--bg);
    border-bottom: 3px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 1000;
}
/* Logoyu ve İkonu Hizalama */
.logo { 
    display: flex; 
    align-items: center; 
    gap: 10px; 
}

/* İkonun Boyutu ve Rengi */
.logo-icon {
    font-size: 32px !important;
    color: var(--accent);
}
.logo h1 { font-size: 22px; color: var(--text); }
.logo span { color: var(--accent); font-weight: 900; }

.menu ul { display: flex; list-style: none; gap: 15px; }
.menu ul li a { text-decoration: none; color: var(--text); font-weight: bold; transition: 0.3s; }
.menu ul li a:hover { color: var(--accent); }

/* Banner */
.banner {
    height: 60vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('img/insaatsahasi.jpg') center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}
.banner-content p { font-size: clamp(24px, 6vw, 50px); font-weight: bold; text-transform: uppercase; padding: 0 20px; }
.banner-content span { color: var(--accent); }

/* Bölümler */
section { padding: 60px 5%; }
.section-title { margin-bottom: 30px; border-bottom: 3px solid var(--accent); display: inline-block; padding-bottom: 5px; font-size: 26px; color: var(--text); }

/* Kartlar - Yukarı çıkma efekti kaldırıldı */
.kartlar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}
.kart { 
    background: var(--card-bg); 
    border: 1px solid var(--border); 
    transition: 0.3s; 
    color: var(--text);
}
.kart:hover { 
    border-color: var(--accent); 
    /* Transform (yukarı kayma) silindi */
}
.resim img { width: 100%; height: 250px; object-fit: cover; display: block; }
.etiket { padding: 15px; text-align: center; font-weight: bold; }

/* İletişim */
.iletisim-container { display: flex; flex-wrap: wrap; gap: 30px; }
form { flex: 1; min-width: 300px; display: flex; flex-direction: column; gap: 10px; }
form input, form textarea { padding: 12px; border: 1px solid var(--border); background: var(--bg); color: var(--text); outline: none; }
.btn-submit { padding: 15px; background: var(--accent); color: white; border: none; cursor: pointer; font-weight: bold; }
.btn-submit:hover { background: #d35400; }
.harita { flex: 1; min-width: 300px; border: 1px solid var(--border); }

/* Footer */
.footer { text-align: center; padding: 30px; background: #2c3e50; color: white; margin-top: 40px; }

/* Responsive */
@media (max-width: 768px) {
    .menu { flex-direction: column; gap: 15px; text-align: center; }
    .banner { height: 45vh; }
    .iletisim-container { flex-direction: column; }
}

/* Sabit Butonlar */
#theme-toggle { display: none; }
.theme-btn { position: fixed; bottom: 20px; left: 20px; background: var(--accent); color: white; padding: 10px 15px; cursor: pointer; z-index: 1000; border-radius: 5px; font-weight: bold; }
.yukari { position: fixed; bottom: 20px; right: 20px; background: #333; color: white; width: 45px; height: 45px; text-align: center; line-height: 45px; text-decoration: none; border-radius: 5px; font-weight: bold; z-index: 1000; }