/* Genel stil ayarları */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

/* Kayıt/Giriş kutusu */
.container {
    width: 100%;
    max-width: 400px;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    position: relative;
}

/* Bildirim kutusu (notification) */
#notification {
    position: fixed;
    top: 20px;
    z-index: 10000;
    min-width: 250px;
    padding: 15px 20px;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Gizleme */
.hidden {
    display: none;
}

/* Form ve input stil */
.form-container h2 {
    text-align: center;
    margin-bottom: 20px;
}

.form-container form input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.form-container form button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    border: none;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}

.form-container form button:hover {
    background: #0056b3;
}

.switch-form {
    text-align: center;
    margin-top: 10px;
}

.switch-form a {
    color: #007bff;
    text-decoration: none;
    cursor: pointer;
}

.switch-form a:hover {
    text-decoration: underline;
}

/* Modal stil */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 90%;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h2 {
    text-align: center;
    margin-bottom: 15px;
    color: #333;
}

.modal-description {
    text-align: center;
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.modal-content form input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.modal-buttons button {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover {
    background: #0056b3;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}