:root {
    --ana-renk: #D90429;       /* Acil Durum Kırmızısı */
    --koyu-renk: #101820;      /* Profesyonel Koyu Gri/Siyah */
    --vurgu-renk: #FFB703;     /* Dikkat Çeken Sarı */
    --whatsapp-renk: #25D366;  /* Orijinal WhatsApp Yeşili */
    --telefon-renk: #0077B6;   /* İletişim Mavisi */
    --beyaz: #FFFFFF;
    --gri-arka: #F4F6F8;
    --yazi-renk: #2B2D42;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Arial, sans-serif; }
body { background-color: var(--gri-arka); color: var(--yazi-renk); line-height: 1.6; }
.konteynir { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Acil Bildirim Bandı */
.acil-bant {
    background: linear-gradient(90deg, var(--ana-renk), #EF233C);
    color: var(--beyaz); padding: 12px 0; text-align: center;
    position: sticky; top: 0; z-index: 1000; font-weight: 700;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.acil-icerik { display: flex; justify-content: center; align-items: center; gap: 15px; flex-wrap: wrap; }
.acil-buton {
    background: var(--vurgu-renk); color: var(--koyu-renk);
    padding: 6px 16px; border-radius: 20px; text-decoration: none;
    font-weight: 800; transition: transform 0.2s;
}
.acil-buton:hover { transform: scale(1.05); }

/* Üst Menü / Navigasyon */
.ust-menu { background: var(--koyu-renk); padding: 18px 0; border-bottom: 3px solid var(--ana-renk); }
.navigasyon { display: flex; justify-content: space-between; align-items: center; }
.logo { color: var(--beyaz); font-size: 1.5rem; font-weight: 800; text-decoration: none; display: flex; align-items: center; gap: 10px; }
.menu-listesi { display: flex; list-style: none; gap: 25px; }
.menu-listesi a { color: var(--beyaz); text-decoration: none; font-weight: 600; font-size: 1.05rem; transition: color 0.3s; }
.menu-listesi a:hover, .menu-listesi a.aktif { color: var(--vurgu-renk); }

/* Karşılama (Hero) Alanı */
.karsilama {
    background: linear-gradient(rgba(16, 24, 32, 0.85), rgba(16, 24, 32, 0.85)), url('https://images.unsplash.com/photo-1578844251758-2f71da64c96f?auto=format&fit=crop&w=1200&q=80') center/cover;
    color: var(--beyaz); padding: 100px 0; text-align: center;
}
.karsilama h1 { font-size: 3rem; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
.karsilama p { font-size: 1.3rem; margin-bottom: 30px; opacity: 0.9; }

/* Buton Grubu */
.buton-grubu { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.ana-buton {
    padding: 15px 35px; border-radius: 30px; text-decoration: none; font-weight: 800;
    font-size: 1.1rem; display: inline-flex; align-items: center; gap: 10px; transition: all 0.3s ease;
}
.telefon-buton { background: var(--ana-renk); color: var(--beyaz); }
.whatsapp-buton { background: var(--whatsapp-renk); color: var(--beyaz); }
.ana-buton:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(0,0,0,0.3); }

/* İçerik ve Kartlar */
.bolum-pad { padding: 80px 0; }
.baslik-alan { text-align: center; margin-bottom: 50px; }
.baslik-alan h2 { font-size: 2.5rem; color: var(--koyu-renk); margin-bottom: 10px; }
.baslik-alan p { font-size: 1.1rem; color: #666; }

.kart-izgara { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.hizmet-kart {
    background: var(--beyaz); padding: 35px 25px; border-radius: 12px;
    text-align: center; box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    border-bottom: 4px solid var(--ana-renk); transition: transform 0.3s;
}
.hizmet-kart:hover { transform: translateY(-10px); }
.kart-simge { font-size: 3.5rem; margin-bottom: 20px; display: block; }
.hizmet-kart h3 { font-size: 1.4rem; color: var(--koyu-renk); margin-bottom: 12px; }

/* Mobil Sabit Butonlar (CTA) */
.sabit-butonlar { position: fixed; bottom: 25px; right: 25px; z-index: 1000; display: flex; flex-direction: column; gap: 15px; }
.sabit-btn {
    width: 65px; height: 65px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3); text-decoration: none; animation: nabiz 2s infinite;
}
@keyframes nabiz { 0% { transform: scale(1); } 50% { transform: scale(1.08); } 100% { transform: scale(1); } }
.sabit-wa { background: var(--whatsapp-renk); }
.sabit-tel { background: var(--ana-renk); }
.svg-simge { width: 34px; height: 34px; fill: var(--beyaz); }

/* Alt Bilgi (Footer) */
.alt-bilgi { background: var(--koyu-renk); color: var(--beyaz); padding: 40px 0 20px; text-align: center; border-top: 3px solid var(--ana-renk); }

/* Mobil Uyumluluk */
@media (max-width: 768px) {
    .navigasyon { flex-direction: column; gap: 15px; }
    .menu-listesi { gap: 15px; flex-wrap: wrap; justify-content: center; }
    .karsilama h1 { font-size: 2rem; }
    .baslik-alan h2 { font-size: 1.8rem; }
}