/* Modal Component */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.modal-lg {
    max-width: 600px;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--gray-400);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

.modal-body {
    padding: var(--space-6);
    max-height: calc(90vh - 140px);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* Toast Notification */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    min-width: 300px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border-left: 4px solid var(--primary);
    padding: var(--space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    animation: slideDown var(--transition-base);
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--danger);
}

.toast.warning {
    border-left-color: var(--warning);
}

.toast.info {
    border-left-color: var(--info);
}

.toast-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.toast.success .toast-icon {
    background: #D1FAE5;
    color: var(--success);
}

.toast.error .toast-icon {
    background: #FEE2E2;
    color: var(--danger);
}

.toast.warning .toast-icon {
    background: #FEF3C7;
    color: var(--warning);
}

.toast.info .toast-icon {
    background: #DBEAFE;
    color: var(--info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-1);
}

.toast-message {
    font-size: 13px;
    color: var(--gray-600);
}

.toast-close {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--gray-400);
    cursor: pointer;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--gray-600);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 200px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--gray-200);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: 14px;
    color: var(--gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.dropdown-item .material-icons {
    font-size: 20px;
    color: var(--gray-500);
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.dropdown-item:hover .material-icons {
    color: var(--gray-700);
}

.dropdown-item.danger {
    color: var(--danger);
}

.dropdown-item.danger .material-icons {
    color: var(--danger);
}

.dropdown-item.danger:hover {
    background: #FEE2E2;
    color: #DC2626;
}

.dropdown-item.danger:hover .material-icons {
    color: #DC2626;
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--space-2) 0;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-6);
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 40px;
    color: var(--gray-400);
}

.empty-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.empty-description {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: var(--space-6);
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--space-2);
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: var(--space-6);
}

.tab {
    padding: var(--space-3) var(--space-4);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--gray-900);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Progress Bar */
.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-bar.success {
    background: var(--success);
}

.progress-bar.warning {
    background: var(--warning);
}

.progress-bar.danger {
    background: var(--danger);
}

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

.tooltip-text {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--gray-900);
    color: white;
    font-size: 12px;
    white-space: nowrap;
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.tooltip:hover .tooltip-text {
    opacity: 1;
    visibility: visible;
}