/* Global Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f1c40f;
    --info-color: #3498db;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --border-radius: 10px;
    --box-shadow: 0 0 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
}

/* Container Styles */
.main-container {
    max-width: 1200px;
    margin: 50px auto;
    padding: 20px;
}

/* Card Styles */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
    border: none;
    transition: var(--transition);
}

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

.card-header {
    background-color: var(--light-color);
    border-bottom: 2px solid #e9ecef;
    padding: 15px 20px;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
}

/* Button Styles */
.btn {
    border-radius: var(--border-radius);
    padding: 10px 20px;
    font-weight: 500;
    transition: var(--transition);
    text-transform: none;
}

.btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

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

.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-action {
    margin: 0 5px;
    padding: 8px 15px;
}

/* Form Styles */
.form-control {
    border-radius: var(--border-radius);
    padding: 12px;
    border: 2px solid #e9ecef;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 8px;
}

/* Table Styles */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table th {
    background-color: var(--light-color);
    color: var(--dark-color);
    font-weight: 600;
    padding: 15px;
    border: none;
}

.table td {
    padding: 15px;
    vertical-align: middle;
    border-bottom: 1px solid #e9ecef;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Modal Styles */
.modal-content {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--box-shadow);
}

.modal-header {
    background-color: var(--light-color);
    border-bottom: 2px solid #e9ecef;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    padding: 20px;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 2px solid #e9ecef;
    padding: 20px;
}

/* Alert Styles */
.alert {
    border-radius: var(--border-radius);
    padding: 15px 20px;
    margin-bottom: 20px;
    border: none;
    box-shadow: var(--box-shadow);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

/* Navigation Styles */
.navbar {
    background-color: white;
    box-shadow: var(--box-shadow);
    padding: 15px 0;
}

.navbar-brand {
    font-weight: 600;
    color: var(--primary-color);
}

/* Language Switcher */
.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-switcher .btn {
    margin-left: 5px;
    padding: 8px 15px;
}

/* Login/Register Forms */
.auth-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
}

/* Dashboard Cards */
.dashboard-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.dashboard-card h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-container {
        margin: 20px auto;
        padding: 10px;
    }

    .table-responsive {
        border-radius: var(--border-radius);
    }

    .btn-action {
        padding: 6px 12px;
    }

    .language-switcher {
        position: static;
        text-align: center;
        margin-bottom: 20px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Tooltip Styles */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 5px 10px;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}