/* === ORTAK CSS STİLLERİ === */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Buton Stilleri */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    background: #45a049;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-danger {
    background: #f44336;
}

.btn-danger:hover {
    background: #d32f2f;
}

.btn-secondary {
    background: #2196F3;
}

.btn-secondary:hover {
    background: #1976D2;
}

/* Input Stilleri */
.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.input-group input,
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s ease;
    background: white;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.1);
}

/* Modal Stilleri */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Notification Stilleri */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 16px;
    border-radius: 4px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    animation: slideIn 0.3s ease;
}

.notification.success {
    background: #4CAF50;
}

.notification.error {
    background: #f44336;
}

.notification.info {
    background: #2196F3;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 15px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 13px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }

.hidden { display: none; }
.visible { display: block; }

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