/* header.css - MAVİ & BEYAZ MODERN TEMA */
:root {
    --primary-blue: #0d6efd; /* Canlı ve modern bir mavi */
    --dark-blue: #0a58ca;   /* Koyu mavi */
    --light-bg: #ffffff;
    --secondary-light-bg: #f8f9fa;
    --dark-text: #212529;
    --light-text: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.07);
}

/* --- Genel Güzelleştirmeler ve Modern Dokunuşlar --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body { 
    font-family: 'Roboto', sans-serif; 
    line-height: 1.6; 
    background-color: var(--light-bg); 
    color: var(--dark-text); 
}

.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* --- Header --- */
.header {
    background: var(--light-bg);
    box-shadow: var(--shadow);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo img { max-height: 60px; width: auto; }
nav ul { display: flex; gap: 30px; list-style: none; }
nav a { color: var(--dark-text); text-decoration: none; font-weight: 500; transition: color 0.3s; }
nav a:hover { color: var(--primary-blue); }

/* --- Giriş/Kayıt Butonları ve Profil Menüsü --- */
.auth-links { position: relative; display: flex; align-items: center; gap: 10px; }
.auth-links .login-btn, .auth-links .signup-btn {
    text-decoration: none;
    padding: 8px 18px;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}
.auth-links .login-btn:hover { color: var(--primary-blue); }
.auth-links .signup-btn { background-color: var(--primary-blue); color: var(--light-text); }
.auth-links .signup-btn:hover { background-color: var(--dark-blue); }

.profile-button { 
    width: 50px; height: 50px; border-radius: 50%; overflow: hidden; 
    border: 2px solid var(--primary-blue); cursor: pointer; background: #e9ecef;
}
.profile-button img { width: 100%; height: 100%; object-fit: cover; }

.dropdown-content { 
    position: absolute; top: 60px; right: 0; background: var(--light-bg); 
    box-shadow: 0 5px 15px rgba(0,0,0,0.1); border: 1px solid var(--border-color);
    border-radius: 8px; display: none; flex-direction: column; z-index: 1001; 
    min-width: 180px; overflow: hidden;
}
.profile-menu.active .dropdown-content { display: flex; }
.dropdown-content a { 
    color: var(--dark-text); text-decoration: none; padding: 12px 18px; 
    font-size: 0.9rem; display: flex; align-items: center; gap: 10px; 
}
.dropdown-content a:hover { background: var(--primary-blue); color: var(--light-text); }
.dropdown-content a i { width: 20px; text-align: center; }

/* --- Hero Alanı --- */
.hero {
    background: linear-gradient(45deg, #3a7bd5, #00d2ff);
    color: var(--light-text);
    padding: 120px 20px;
    text-align: center;
}
.hero h1 { font-size: 3.5rem; font-weight: 700; margin-bottom: 15px; }
.hero p { font-size: 1.25rem; max-width: 600px; margin: 0 auto 30px auto; opacity: 0.9; }
.hero .btn {
    background-color: var(--light-text);
    color: var(--primary-blue);
    padding: 14px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hero .btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }

/* --- Genel Bölüm Stilleri --- */
section { padding: 80px 20px; }
section:nth-child(even) { background-color: var(--secondary-light-bg); }
section h2 { text-align: center; margin-bottom: 60px; font-size: 2.8rem; font-weight: 500; }

/* --- Hizmet Kartları --- */
.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    text-align: center;
}
.service-item {
    background: var(--light-bg);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}
.service-item .service-icon { font-size: 3rem; color: var(--primary-blue); margin-bottom: 20px; }
.service-item h3 { font-size: 1.5rem; margin-bottom: 15px; }

/* --- İletişim Formu --- */
.contact-box form { display: flex; flex-direction: column; gap: 15px; max-width: 600px; margin: auto; }
.contact-box input, .contact-box textarea {
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}
.contact-box input:focus, .contact-box textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.2);
}
.contact-box button {
    padding: 15px; border: none; border-radius: 5px;
    background-color: var(--primary-blue); color: var(--light-text);
    font-size: 1.1rem; cursor: pointer; transition: background-color 0.3s ease;
}
.contact-box button:hover { background-color: var(--dark-blue); }

/* --- Footer --- */
footer {
    background-color: #1c2331;
    color: var(--light-text);
    text-align: center;
    padding: 40px 20px;
}
footer p { opacity: 0.8; }

/* --- Medya Sorguları --- */
@media (max-width: 768px) {
  .header { flex-direction: column; gap: 15px; }
  .hero h1 { font-size: 2.5rem; }
  section h2 { font-size: 2.2rem; }
}