/* GENEL STİLLER */
:root {
    --primary-color: rgba(0, 0, 108, 0.95);
    --secondary-color: #3498db;
    --accent-color: #e552a0;
    --highlight-color: #1f1abc;
    --text-white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --sidebar-width: 320px;
    --navbar-height: 90px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Poppins', 'Open Sans', sans-serif;
    background-color: #f8f9fa;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* TÜM BAĞLANTILAR */
a {
    text-decoration: none !important;
    color: inherit;
    transition: all var(--transition-speed) ease;
}

/* GENEL BAŞLIK STİLLERİ */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

/* GENEL PARAGRAF STİLLERİ */
p {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* KONTEYNER STİLLERİ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* BÖLÜM STİLLERİ */
section {
    padding: 80px 0;
}

/* BUTON STİLLERİ */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
}

.btn-primary:hover {
    background-color: #000066;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 108, 0.2);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-white);
}

.btn-secondary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* KART STİLLERİ */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px var(--shadow-color);
    padding: 30px;
    transition: all var(--transition-speed) ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* ALT BAŞLIK ÖZEL STİL */
.alt-başlık-özel {
    font-size: 2.5rem;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #2c3e50 0%, #e74c3c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    position: relative;
    text-align: center;
}

.alt-başlık-özel::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #2c3e50 0%, #e74c3c 100%);
    border-radius: 2px;
}

/* FORM STİLLERİ */
.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-speed) ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 108, 0.1);
}

/* RESPONSIVE TASARIM */
@media screen and (max-width: 1200px) {
    .container {
        padding: 0 30px;
    }
    
    section {
        padding: 60px 0;
    }
}

@media screen and (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    section {
        padding: 40px 0;
    }
    
    .alt-başlık-özel {
        font-size: 2rem;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .alt-başlık-özel {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}