:root {
    --primary: #004fb0;
    --secondary: #25d366; /* WhatsApp Yesili */
    --text: #333;
    --bg: #f5f7fa;
    --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.08); padding: 15px 0; position: sticky; top:0; z-index: 100; }
.header-flex { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 22px; font-weight: bold; color: var(--primary); text-decoration: none; }
.main-nav { display: flex; gap: 20px; }
.main-nav a { text-decoration: none; color: var(--text); font-weight: 600; font-size:15px; transition: color 0.3s;}
.main-nav a:hover { color: var(--primary); }
.btn-call { display: flex; align-items: center; gap: 8px; background: var(--primary); color: var(--white); padding: 10px 20px; border-radius: 5px; text-decoration: none; font-weight: bold; transition: background 0.3s;}
.btn-call:hover { background: #003d82; }

/* Dropdown */
.dropdown { position: relative; display: inline-block; }
.dropbtn { background: none; border: none; font-size: 15px; font-weight: 600; cursor: pointer; display: flex; align-items: center; gap: 5px; color: var(--text); }
.dropdown-content { display: none; position: absolute; background-color: #fff; min-width: 220px; box-shadow: 0px 8px 16px rgba(0,0,0,0.1); z-index: 1; border-radius: 5px; top: 100%; border: 1px solid #eee;}
.dropdown-content a { color: #444; padding: 12px 16px; text-decoration: none; display: block; border-bottom: 1px solid #f1f1f1; font-weight:500;}
.dropdown-content a:hover { background-color: #f9f9f9; color:var(--primary); padding-left:20px;}
.dropdown:hover .dropdown-content { display: block; }

/* Hero & Form */
.hero { background: linear-gradient(135deg, var(--primary), #00224b); color: var(--white); padding: 70px 0; text-align: center; }
.hero h1 { font-size: 40px; margin-bottom: 15px; }
.hero p { font-size: 18px; opacity: 0.9; }
.form-container { background: var(--white); padding: 35px; border-radius: 12px; max-width: 550px; margin: 40px auto 0; color: var(--text); box-shadow: 0 15px 30px rgba(0,0,0,0.2); text-align: left;}
.form-step { display: none; animation: fadeIn 0.4s; }
.form-step.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.form-step h3 { margin-bottom: 20px; color: var(--primary); font-size: 18px;}
.input-box { width: 100%; padding: 14px; margin: 10px 0 20px; border: 1px solid #dcdcdc; border-radius: 6px; font-size: 15px; outline:none; transition: border 0.3s;}
.input-box:focus { border-color: var(--primary); }
textarea.input-box { resize: vertical; min-height: 100px; }
.buttons { display: flex; gap: 10px; }
.btn-primary, .btn-whatsapp, .btn-secondary { width: 100%; padding: 15px; border: none; border-radius: 6px; font-size: 16px; cursor: pointer; font-weight: bold; display:flex; justify-content:center; align-items:center; gap:10px; transition: transform 0.2s, opacity 0.3s;}
.btn-primary:hover, .btn-whatsapp:hover { opacity: 0.9; transform: translateY(-2px); }
.btn-primary { background: var(--primary); color: white; }
.btn-whatsapp { background: var(--secondary); color: white; }
.btn-secondary { background: #e0e0e0; color: #333; }

/* Grids */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-top: 20px; }
.card { background: white; padding: 35px 20px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); text-decoration: none; color: var(--text); display: block; text-align: center; transition: all 0.3s; border-bottom: 3px solid transparent;}
.card:hover { transform: translateY(-5px); border-bottom-color: var(--primary); box-shadow: 0 10px 20px rgba(0,0,0,0.1);}
.card h3 { color: var(--primary); }
.card-small { background: white; padding: 15px; border-radius: 6px; border: 1px solid #eaeaea; text-decoration: none; color: var(--primary); text-align: center; font-weight: 600; transition: background 0.3s;}
.card-small:hover { background: var(--primary); color: white; }

/* Page Content */
.page-content { padding: 50px; background: white; border-radius: 12px; margin-top: 40px; margin-bottom: 40px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.page-content h1 { color: var(--primary); margin-bottom: 25px; font-size: 32px; border-bottom: 2px solid #f0f0f0; padding-bottom: 10px;}
.page-content p { margin-bottom: 15px; font-size: 16px; line-height: 1.8; color: #555;}

/* Footer */
.site-footer { background: #1a1a1a; color: #ddd; padding: 60px 0 20px; margin-top: 60px; }
.site-footer h3 { color: white; margin-bottom: 20px; font-size:18px;}
.footer-links { list-style: none; padding:0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #aaa; text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: white; }
.footer-bottom { text-align: center; border-top: 1px solid #333; margin-top: 40px; padding-top: 20px; color:#777; font-size:14px;}

@media (max-width: 768px) {
    .header-flex { flex-direction: column; gap: 15px; }
    .main-nav { flex-wrap: wrap; justify-content: center; }
    .hero h1 { font-size: 28px; }
    .page-content { padding: 30px 20px; }
}