:root {
    --kot-mavisi: #4A6B8C;
    --turuncu: #F28C28;
    --zumrut-yesili: #2E8B57;
    --koyu-mavi: #1C2833;
    --acik-gri: #F8F9FA;
    --beyaz: #FFFFFF;
}

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

body {
    background-color: var(--acik-gri);
    color: #333;
}

/* --- HEADER BÖLÜMÜ --- */
header {
    background-color: var(--beyaz);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    color: var(--kot-mavisi);
    font-size: 24px;
}

.main-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 20px;
}

.main-menu a {
    text-decoration: none;
    color: var(--koyu-mavi);
    font-weight: 600;
    transition: color 0.3s ease;
}

.main-menu a:hover {
    color: var(--turuncu);
}

/* Dropdown (Açılır Menü) */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--beyaz);
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    z-index: 1;
    top: 100%;
    left: 0;
    border-top: 3px solid var(--kot-mavisi);
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    border-bottom: 1px solid #eee;
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* Butonlar ve İkonlar */
.btn-action {
    background-color: var(--turuncu);
    color: var(--beyaz);
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
}

.btn-action:hover {
    background-color: #d67a1f;
    color: var(--beyaz);
}

.social-icon {
    color: var(--kot-mavisi);
    font-size: 20px;
}

/* --- HERO (GİRİŞ) BÖLÜMÜ --- */
.hero-section {
    background: linear-gradient(135deg, var(--kot-mavisi) 0%, var(--koyu-mavi) 100%);
    color: var(--beyaz);
    text-align: center;
    padding: 100px 20px;
}

.hero-section h2 {
    color: var(--turuncu);
    font-size: 18px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.hero-section h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.hero-section p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px auto;
    line-height: 1.6;
}

.hero-section .btn-action {
    background-color: var(--zumrut-yesili);
    font-size: 18px;
    padding: 15px 30px;
}

.hero-section .btn-action:hover {
    background-color: #246e45;
}