:root {
    --primary-color: #0f172a;
    --secondary-color: #f59e0b;
    --text-color: #334155;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { color: var(--text-color); background-color: var(--bg-light); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: var(--transition); }

/* Top Header */
.top-header { background: var(--primary-color); color: var(--white); padding: 10px 5%; display: flex; justify-content: space-between; font-size: 14px; }
.top-header a { color: var(--secondary-color); font-weight: bold; }

/* Main Header & Navbar */
.main-header { background: var(--white); padding: 20px 5%; display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow); position: sticky; top: 0; z-index: 1000; }
.logo { font-size: 28px; font-weight: 800; color: var(--primary-color); }
.logo span { color: var(--secondary-color); }
.nav-links { list-style: none; display: flex; gap: 30px; align-items: center; }
.nav-links li a { font-weight: 600; font-size: 16px; color: var(--primary-color); }
.nav-links li a:hover { color: var(--secondary-color); }

/* Dropdown Menü */
.dropdown { position: relative; }
.dropdown-menu { position: absolute; top: 100%; left: 0; background: var(--white); min-width: 240px; box-shadow: 0 15px 30px rgba(0,0,0,0.1); border-radius: 8px; opacity: 0; visibility: hidden; transform: translateY(15px); transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1); list-style: none; padding: 10px 0; z-index: 1001; border-top: 3px solid var(--secondary-color); }
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu li { margin: 0; border-bottom: 1px solid #f1f5f9; }
.dropdown-menu li:last-child { border-bottom: none; }
.dropdown-menu li a { display: block; padding: 12px 20px; color: var(--primary-color); font-size: 15px; font-weight: 500; transition: var(--transition); }
.dropdown-menu li a:hover { background: var(--bg-light); color: var(--secondary-color); padding-left: 28px; }

/* Hero Slider */
.hero-slider { background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), #cbd5e1; color: var(--white); text-align: center; padding: 100px 5%; border-bottom: 5px solid var(--secondary-color); display: flex; align-items: center; justify-content: center; min-height: 60vh; }
.slider-content { max-width: 800px; margin: 0 auto; }
.hero-slider h1 { font-size: 48px; font-weight: 800; margin-bottom: 20px; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
.hero-slider p { font-size: 20px; margin-bottom: 30px; font-weight: 300; }
.hero-btns { display: flex; gap: 20px; justify-content: center; }
.btn-primary { background: var(--secondary-color); color: var(--white); padding: 15px 30px; font-size: 18px; font-weight: bold; border-radius: 8px; transition: var(--transition); box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4); }
.btn-primary:hover { background: #d97706; transform: translateY(-3px); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid var(--white); padding: 15px 30px; font-size: 18px; font-weight: bold; border-radius: 8px; transition: var(--transition); }
.btn-outline:hover { background: var(--white); color: var(--primary-color); }

/* Neden Biz? */
.why-us-section { background: var(--bg-light); padding: 80px 5%; text-align: center; }
.section-title { font-size: 32px; color: var(--primary-color); margin-bottom: 40px; }
.why-us-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; margin-top: 40px; }
.why-box { background: var(--white); padding: 30px; border-radius: 12px; box-shadow: var(--shadow); border-left: 4px solid var(--primary-color); }
.why-box h3 { color: var(--primary-color); margin-bottom: 15px; }

/* Hizmetler & 3D İkon Kartları */
.services-section { padding: 80px 5%; text-align: center; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.service-card { background: var(--white); padding: 40px 20px; border-radius: 12px; box-shadow: var(--shadow); transition: var(--transition); border-top: 4px solid transparent; display: block; }
.service-card:hover { transform: translateY(-10px); border-top: 4px solid var(--secondary-color); }
.icon-3d { width: 80px; height: 80px; background: linear-gradient(135deg, var(--secondary-color), #d97706); border-radius: 20px; margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 32px; box-shadow: 0 10px 20px rgba(245, 158, 11, 0.4); }

/* CTA Banner */
.cta-banner { background: linear-gradient(135deg, var(--secondary-color), #d97706); color: var(--white); padding: 60px 5%; text-align: center; margin: 40px 0; border-radius: 12px; box-shadow: var(--shadow); }
.cta-banner h2 { font-size: 32px; margin-bottom: 15px; }
.cta-banner p { font-size: 18px; margin-bottom: 25px; }
.cta-btn { background: var(--primary-color); color: var(--white); padding: 15px 40px; font-size: 20px; font-weight: bold; border-radius: 8px; display: inline-block; transition: var(--transition); }
.cta-btn:hover { background: var(--white); color: var(--primary-color); }

/* Footer */
.main-footer { background: var(--primary-color); color: var(--white); padding: 60px 5% 20px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h3 { color: var(--secondary-color); margin-bottom: 20px; font-size: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a:hover { color: var(--secondary-color); padding-left: 5px; }
.footer-bottom { text-align: center; border-top: 1px solid #334155; padding-top: 20px; font-size: 14px; }

/* Sabit Butonlar (Ara ve WhatsApp) */
.floating-btn { position: fixed; bottom: 30px; right: 30px; background: var(--secondary-color); color: var(--white); width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; box-shadow: 0 4px 15px rgba(245, 158, 11, 0.5); z-index: 1000; transition: var(--transition); }
.floating-btn:hover { transform: scale(1.1); background: var(--primary-color); }

.whatsapp-btn { position: fixed; bottom: 30px; left: 30px; background: #25D366; color: var(--white); width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4); z-index: 1000; transition: var(--transition); text-decoration: none; }
.whatsapp-btn:hover { transform: scale(1.1); background: #128C7E; color: var(--white); }

/* Alt Sayfalar İçin */
.page-header { background: linear-gradient(135deg, var(--primary-color), #1e293b); color: var(--white); padding: 60px 5%; text-align: center; border-bottom: 5px solid var(--secondary-color); }
.page-header h1 { font-size: 36px; margin-bottom: 10px; }
.content-section { padding: 60px 5%; max-width: 1200px; margin: 0 auto; }
.content-text { font-size: 16px; color: #475569; margin-bottom: 20px; text-align: justify; }
.content-text strong { color: var(--primary-color); }
/* İletişim Formu ve Harita Stilleri */
.contact-container { display: flex; flex-wrap: wrap; gap: 40px; }
.contact-form { flex: 1; min-width: 300px; background: var(--white); padding: 30px; border-radius: 12px; box-shadow: var(--shadow); }
.contact-form input, .contact-form textarea { width: 100%; padding: 15px; margin-bottom: 20px; border: 1px solid #cbd5e1; border-radius: 8px; font-family: inherit; font-size: 15px; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--secondary-color); box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2); }
.contact-form button { background: var(--secondary-color); color: var(--white); border: none; padding: 15px 30px; font-size: 18px; font-weight: bold; border-radius: 8px; cursor: pointer; transition: var(--transition); width: 100%; }
.contact-form button:hover { background: var(--primary-color); transform: translateY(-2px); }
.contact-info-box { flex: 1; min-width: 300px; }
.map-responsive { overflow: hidden; padding-bottom: 56.25%; position: relative; height: 0; border-radius: 12px; box-shadow: var(--shadow); }
.map-responsive iframe { left: 0; top: 0; height: 100%; width: 100%; position: absolute; border: 0; }