/* BURSA ÇEKİCİ ARA - KESİN VE HATASIZ SON VERSİYON */

:root {
    --ana-renk: #003366;
    --turuncu: #ff9900;
    --koyu: #1a1a1a;
    --acik-gri: #f4f7f6;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Arial, sans-serif; }

body { background-color: #fff; color: #333; line-height: 1.6; }

.container { width: 90%; max-width: 1200px; margin: auto; }

/* HEADER - Mobilde Kapanmama Sorunu Çözüldü */
header { 
    background: #fff; 
    border-bottom: 3px solid var(--ana-renk);
    position: relative; /* Sabit değil, sayfa kayınca yukarıda kalır */
    z-index: 100;
}

.top-bar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 15px 0; 
}

.logo img { height: 65px; width: auto; }

.btn-call { 
    background: var(--turuncu); 
    color: #fff; 
    padding: 12px 25px; 
    border-radius: 50px; 
    text-decoration: none; 
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* NAVIGASYON */
nav { background: var(--ana-renk); padding: 12px 0; }
nav ul { 
    display: flex; 
    justify-content: center; 
    list-style: none; 
    gap: 20px; 
    flex-wrap: wrap; 
}
nav a { color: #fff; text-decoration: none; font-weight: 600; font-size: 15px; }

/* HERO - KESİN ÇÖZÜM: GERÇEK ÇEKİCİ RESMİ */
.hero { 
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), 
    url('https://www.bursacekiciara.com.tr/Images/Grafik/13042026232901.png') center/cover no-repeat;
    color: #fff; 
    padding: 120px 0; 
    text-align: center;
}

.hero h1 { font-size: 2.5rem; margin-bottom: 20px; text-shadow: 2px 2px 4px #000; }

.main-cta { 
    display: inline-block;
    background: var(--turuncu); 
    color: #fff; 
    padding: 15px 40px; 
    text-decoration: none; 
    border-radius: 5px; 
    font-weight: bold; 
    font-size: 20px;
}

/* HİZMETLERİMİZ - KARTLARIN DÜZELTİLMİŞ HALİ */
.section-title { text-align: center; margin: 50px 0 30px; font-size: 32px; color: var(--ana-renk); }

.service-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 25px; 
    margin-bottom: 60px;
}

.service-card { 
    background: #fff;
    border: 1px solid #eee; 
    padding: 40px 20px; 
    text-align: center; 
    border-radius: 12px; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
}

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

.service-card i { font-size: 50px; color: var(--ana-renk); margin-bottom: 20px; display: block; }

.btn-detail { 
    display: inline-block;
    margin-top: 15px;
    color: var(--turuncu);
    text-decoration: none;
    font-weight: bold;
}

/* WHATSAPP */
.whatsapp-float { 
    position: fixed; 
    bottom: 20px; 
    right: 20px; 
    background: #25d366; 
    color: #fff; 
    padding: 12px 25px; 
    border-radius: 50px; 
    text-decoration: none; 
    font-weight: bold;
    z-index: 1000;
}

/* MOBİL AYARLAR */
@media (max-width: 768px) {
    .top-bar { flex-direction: column; gap: 15px; text-align: center; }
    .hero h1 { font-size: 1.8rem; padding: 0 10px; }
    nav ul { gap: 10px; }
    nav a { font-size: 13px; }
}