:root {
    --primary: #FFB400; /* İnşaat Sarısı - Logonuzla Uyumlu */
    --dark: #1E1E24;
    --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Montserrat', sans-serif; line-height: 1.6; color: #333; scroll-behavior: smooth; }
.container { max-width: 1200px; margin: auto; padding: 0 20px; }

/* Navigasyon */
header { background: #fff; padding: 15px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo img { height: 60px; }
.nav-links { list-style: none; display: flex; gap: 20px; }
.nav-links a { text-decoration: none; color: var(--dark); font-weight: 700; text-transform: uppercase; font-size: 0.9rem; }
.nav-links a:hover { color: var(--primary); }

/* Hero */
.hero { height: 75vh; position: relative; overflow: hidden; }
.hero-main-img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; }
.hero-content { color: #fff; text-align: center; max-width: 800px; padding: 20px; }
.hero-content h1 { font-size: 3rem; margin-bottom: 20px; border-bottom: 6px solid var(--primary); display: inline-block; }
.btn { display: inline-block; background: var(--primary); color: #000; padding: 15px 30px; text-decoration: none; font-weight: bold; border-radius: 5px; margin-top: 20px; }

/* Hakkımızda */
.section { padding: 80px 0; }
.about-card { background: #f8f9fa; padding: 40px; border-left: 10px solid var(--primary); }
.principles { margin: 20px 0; padding: 20px; background: #fff; border: 1px dashed #ccc; }
.principles ul { list-style: none; }

/* Ürünler Galeri */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 15px; margin-top: 30px; }
.product-grid img { width: 100%; height: 250px; object-fit: cover; border-radius: 5px; cursor: pointer; transition: 0.4s; }
.product-grid img:hover { transform: scale(1.05); border: 2px solid var(--primary); }

/* İletişim & Footer - MAVİ YAZI DÜZELTMESİ */
footer { background: var(--dark); color: var(--white); padding: 60px 0; text-align: center; }
footer h3 { color: var(--primary); margin-bottom: 25px; font-size: 2rem; }
footer a { 
    color: var(--primary); /* Mavi yerine sarı/turuncu yaparak okunurluğu sağladık */
    text-decoration: none; 
    font-weight: bold; 
}
footer a:hover { color: var(--white); text-decoration: underline; }
.footer-bottom { margin-top: 40px; border-top: 1px solid #333; padding-top: 20px; color: #888; }

/* Modal */
.modal { display: none; position: fixed; z-index: 2000; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); justify-content: center; align-items: center; }
.modal-content { max-width: 90%; max-height: 80%; border: 3px solid var(--primary); }
.close-modal { position: absolute; top: 20px; right: 40px; color: #fff; font-size: 50px; cursor: pointer; }