* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { line-height: 1.6; color: #333; background-color: #f4f6f8; }

/* Üst Acil İletişim Barı */
.top-bar { background: #111; color: #fff; padding: 8px 0; font-size: 0.9rem; border-bottom: 2px solid #28a745; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar a { color: #28a745; text-decoration: none; font-weight: bold; }

/* Menü / Navigation */
header { background: #1a1a1a; padding: 15px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.nav-container { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }
.logo { color: #fff; font-size: 1.5rem; font-weight: bold; text-decoration: none; text-transform: uppercase; }
.logo span { color: #28a745; }
nav ul { display: flex; list-style: none; gap: 20px; }
nav a { color: #ddd; text-decoration: none; font-weight: 600; font-size: 1rem; transition: 0.3s; }
nav a:hover, nav a.active { color: #28a745; }

/* Slider Alanı */
.slider-container { position: relative; width: 100%; height: 420px; overflow: hidden; background: #111; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 0.8s ease-in-out; display: flex; align-items: center; justify-content: center; background-size: cover; background-position: center; }
.slide.active { opacity: 1; }
.slide::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.65); }

/* Slide İçerikleri */
.slide-content { position: relative; z-index: 2; text-align: center; color: #fff; max-width: 800px; padding: 0 20px; }
.slide-content h2 { font-size: 2.3rem; margin-bottom: 15px; text-transform: uppercase; text-shadow: 2px 2px 4px rgba(0,0,0,0.6); }
.slide-content p { font-size: 1.2rem; margin-bottom: 25px; color: #ddd; }

/* Slider Okları ve Noktaları */
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,0.5); color: #fff; border: none; font-size: 2rem; padding: 10px 18px; cursor: pointer; z-index: 10; border-radius: 4px; transition: 0.3s; }
.slider-arrow:hover { background: #28a745; }
.prev { left: 15px; }
.next { right: 15px; }

.slider-dots { position: absolute; bottom: 15px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; z-index: 10; }
.dot { width: 12px; height: 12px; background: rgba(255,255,255,0.5); border-radius: 50%; cursor: pointer; transition: 0.3s; }
.dot.active { background: #28a745; width: 28px; border-radius: 10px; }

@media (max-width: 768px) {
    .slider-container { height: 350px; }
    .slide-content h2 { font-size: 1.6rem; }
    .slide-content p { font-size: 1rem; }
    .slider-arrow { padding: 5px 12px; font-size: 1.5rem; }
}
.btn-call-large { background: #28a745; color: #fff; padding: 16px 35px; font-size: 1.4rem; text-decoration: none; border-radius: 50px; font-weight: bold; display: inline-block; box-shadow: 0 4px 15px rgba(40,167,69,0.4); transition: 0.3s; }
.btn-call-large:hover { background: #218838; transform: translateY(-2px); }

/* İçerik ve Izgara Yapısı */
.container { max-width: 1100px; margin: 40px auto; padding: 0 20px; min-height: 55vh; }
.section-title { text-align: center; margin-bottom: 35px; font-size: 2rem; color: #111; position: relative; }
.section-title::after { content: ''; display: block; width: 70px; height: 4px; background: #28a745; margin: 10px auto 0; border-radius: 2px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px; }
.card { background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border-top: 4px solid #28a745; }
.card h3 { margin-bottom: 12px; color: #111; }
.card p { color: #666; font-size: 0.95rem; }

/* Bölge Listesi (Local SEO) */
.districts-grid { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 20px; }
.district-tag { background: #fff; color: #333; border: 1px solid #ddd; padding: 8px 15px; border-radius: 5px; font-weight: 600; font-size: 0.9rem; }

/* Alt Sabit Mobil Arama Butonu */
.mobile-fixed-call { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #28a745; color: #fff; text-align: center; padding: 15px; font-size: 1.2rem; font-weight: bold; text-decoration: none; z-index: 9999; box-shadow: 0 -2px 10px rgba(0,0,0,0.2); }

@media (max-width: 768px) {
    .hero h1 { font-size: 1.8rem; }
    .mobile-fixed-call { display: block; }
    body { padding-bottom: 50px; }
}

/* Footer */
footer { background: #111; color: #aaa; text-align: center; padding: 25px; margin-top: 50px; }

/* Referans Ürün Galerisi */
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }
.portfolio-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,0.08); border: 1px solid #e0e0e0; transition: transform 0.3s; }
.portfolio-card:hover { transform: translateY(-5px); }
.portfolio-img { width: 100%; height: 220px; object-fit: cover; background-color: #eee; border-bottom: 3px solid #28a745; }
.portfolio-body { padding: 20px; }
.portfolio-tag { display: inline-block; background: #e8f5e9; color: #28a745; padding: 4px 10px; border-radius: 4px; font-size: 0.8rem; font-weight: bold; margin-bottom: 10px; }
.portfolio-body h3 { font-size: 1.1rem; color: #111; margin-bottom: 8px; }
.portfolio-body p { color: #666; font-size: 0.9rem; line-height: 1.5; }
/* WhatsApp Sabit Buton */
.whatsapp-fixed {
    position: fixed;
    bottom: 25px;
    left: 25px;
    background-color: #25d366;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50px;
    text-align: center;
    font-size: 32px;
    box-shadow: 2px 5px 15px rgba(0,0,0,0.3);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.whatsapp-fixed:hover {
    transform: scale(1.1);
    background-color: #128c7e;
}

/* Mobil cihazlarda arama çubuğu ile üst üste binmemesi için yükseltme */
@media (max-width: 768px) {
    .whatsapp-fixed {
        bottom: 75px; /* Alt kısımdaki sabit arama butonunun hemen üstünde durur */
        left: 15px;
        width: 50px;
        height: 50px;
        font-size: 26px;
    }
}