/* --- GENEL AYARLAR --- */
:root {
    --primary-color: #0e2a47; /* Havacılık Laciverti */
    --secondary-color: #c92432; /* Türk Bayrağı Kırmızısı / Aksiyon */
    --accent-color: #f1c40f; /* Altın Sarısı (Rütbe/Başarı) */
    --text-dark: #333;
    --text-light: #f4f4f4;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #f9f9f9;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* --- TOP BAR (Üst Çubuk) --- */
.top-bar {
    background-color: #051324;
    color: #bbb;
    font-size: 0.85rem;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.contact-info span { margin-right: 20px; }
.contact-info i { color: var(--accent-color); margin-right: 5px; }

.social-media a { margin-left: 15px; color: #fff; }
.social-media a:hover { color: var(--accent-color); }

.top-btn {
    background: var(--secondary-color);
    padding: 5px 15px;
    border-radius: 4px;
    font-weight: bold;
    margin-left: 15px;
}

/* --- NAVBAR (Menü) --- */
header {
    background: #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
}

.logo {
    display: flex;
    align-items: center;
    color: var(--primary-color);
}

.logo i { font-size: 2.5rem; margin-right: 15px; }
.logo-text h1 { font-size: 1.8rem; font-weight: 800; line-height: 1; }
.logo-text small { font-size: 0.9rem; letter-spacing: 2px; color: var(--secondary-color); font-weight: 600; }

header nav ul { display: flex; align-items: center; }
header nav ul li { margin-left: 30px; }
header nav ul li a { font-weight: 500; font-family: var(--font-heading); color: var(--primary-color); font-size: 1rem; }
header nav ul li a:hover, header nav ul li a.active { color: var(--secondary-color); }

.btn-randevu {
    background: var(--primary-color);
    color: #fff !important;
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 600;
}
.btn-randevu:hover { background: var(--secondary-color); }

/* --- HERO SECTION --- */
.hero {
    height: 85vh;
    background: url('https://images.unsplash.com/photo-1542296332-2e44a99cfef9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80') no-repeat center center/cover;
    position: relative;
    display: flex;
    align-items: center;
    color: #fff;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, rgba(14,42,71,0.9) 0%, rgba(14,42,71,0.6) 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 800px; }

.badge {
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 5px 15px;
    font-weight: bold;
    border-radius: 4px;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin: 20px 0;
}

.hero-content p { font-size: 1.2rem; margin-bottom: 30px; opacity: 0.9; max-width: 600px; }

.btn-primary {
    display: inline-block;
    background: var(--secondary-color);
    color: #fff;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: bold;
    margin-right: 15px;
}
.btn-secondary {
    display: inline-block;
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
    padding: 13px 35px;
    border-radius: 5px;
    font-weight: bold;
}
.btn-secondary:hover { background: #fff; color: var(--primary-color); }

/* --- DUYURU BANDI --- */
.notice-bar {
    background: var(--secondary-color);
    color: #fff;
    padding: 15px 0;
    text-align: center;
    font-family: var(--font-heading);
}

/* --- ÖZELLİKLER (KARTLAR) --- */
.features { padding: 80px 0; position: relative; top: -50px; z-index: 3; }
.grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    border-bottom: 4px solid transparent;
}

.feature-card:hover, .active-card {
    transform: translateY(-10px);
    border-bottom: 4px solid var(--secondary-color);
}

.icon-box {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 { font-size: 1.4rem; margin-bottom: 15px; color: var(--primary-color); }

/* --- FOOTER --- */
footer { background: #111; color: #aaa; padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-widget h3 { color: #fff; margin-bottom: 20px; font-size: 1.2rem; }
.footer-widget ul li { margin-bottom: 10px; }
.footer-widget ul li a:hover { color: var(--secondary-color); margin-left: 5px; }
.copyright { border-top: 1px solid #222; text-align: center; padding: 20px 0; font-size: 0.9rem; }

/* --- MOBİL UYUMLULUK --- */
@media (max-width: 768px) {
    .navbar { height: auto; padding: 15px 0; flex-direction: column; }
    header nav ul { flex-direction: column; margin-top: 20px; }
    header nav ul li { margin: 10px 0; }
    .hero-content h1 { font-size: 2.2rem; }
    .top-bar-content { flex-direction: column; gap: 10px; text-align: center; }
    .features { top: 0; padding: 40px 0; }
}