.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.02),
        0 12px 24px rgba(0, 0, 0, 0.01);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.06),
        0 8px 16px rgba(0, 0, 0, 0.08),
        0 16px 32px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn:active::before {
    width: 200px;
    height: 200px;
}

.btn-primary {
    background: linear-gradient(180deg, #3395FF 0%, var(--primary) 100%);
    color: white;
    box-shadow: 0 1px 3px rgba(0, 122, 255, 0.3), 0 4px 8px rgba(0, 122, 255, 0.15);
}

.btn-primary:hover {
    background: linear-gradient(180deg, #2B7FE6 0%, var(--primary-hover) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.35), 0 8px 16px rgba(0, 122, 255, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 122, 255, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 1px 3px rgba(52, 199, 89, 0.3);
}

.btn-success:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 1px 3px rgba(255, 59, 48, 0.3);
}

.btn-danger:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light), 0 2px 4px rgba(0, 122, 255, 0.1);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: var(--text-quaternary);
}

.form-input:disabled {
    background: var(--bg-secondary);
    cursor: not-allowed;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238E8E93' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 44px;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 6px;
}

.upload-zone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-zone:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.12);
}

.upload-zone:hover::before {
    opacity: 1;
}

.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: scale(1.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.upload-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.upload-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(0, 122, 255, 0.12) 100%);
    color: var(--primary);
}

.badge-success {
    background: linear-gradient(135deg, var(--success-light) 0%, rgba(52, 199, 89, 0.12) 100%);
    color: var(--success);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-light) 0%, rgba(255, 149, 0, 0.12) 100%);
    color: var(--warning);
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-light) 0%, rgba(255, 59, 48, 0.12) 100%);
    color: var(--danger);
}

.badge-gray {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.02),
        0 12px 24px rgba(0, 0, 0, 0.01);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, #5856D6 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.4) 50%, 
        transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card:hover {
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.06),
        0 8px 16px rgba(0, 0, 0, 0.08),
        0 16px 32px rgba(0, 0, 0, 0.06);
    transform: translateY(-4px);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card:hover::after {
    opacity: 1;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    box-shadow: var(--shadow-xs);
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon.primary {
    background: var(--primary-light);
    color: var(--primary);
}

.stat-icon.success {
    background: var(--success-light);
    color: var(--success);
}

.stat-icon.warning {
    background: var(--warning-light);
    color: var(--warning);
}

.stat-icon.danger {
    background: var(--danger-light);
    color: var(--danger);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    margin-top: 8px;
    font-weight: 500;
}

.stat-change.up {
    color: var(--success);
}

.stat-change.down {
    color: var(--danger);
}

.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 14px 16px;
    text-align: left;
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    font-size: 0.9375rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background: var(--bg-secondary);
}

.progress {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #5856D6 100%);
    border-radius: 3px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 122, 255, 0.3);
}

.progress-bar.success {
    background: linear-gradient(90deg, var(--success) 0%, #30D158 100%);
}

.progress-bar.warning {
    background: linear-gradient(90deg, var(--warning) 0%, #FFB340 100%);
}

.progress-bar.danger {
    background: linear-gradient(90deg, var(--danger) 0%, #FF6961 100%);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #5856D6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.25), 0 1px 2px rgba(0, 0, 0, 0.06);
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

.avatar-lg {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
}

.empty-state {
    text-align: center;
    padding: 64px 24px;
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-icon svg {
    width: 36px;
    height: 36px;
    color: var(--text-quaternary);
}

.empty-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-text {
    font-size: 0.9375rem;
    color: var(--text-tertiary);
    margin-bottom: 24px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 2px;
    font-size: 0.9375rem;
}

.alert-text {
    font-size: 0.875rem;
    opacity: 0.9;
}

.alert-info {
    background: var(--primary-light);
    color: var(--primary);
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.tab-item {
    padding: 10px 18px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.tab-item:hover {
    color: var(--text-primary);
}

.tab-item.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-xs);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

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

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-xl);
}

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

.modal-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: 0 24px 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
}

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

.dropdown-item {
    padding: 10px 16px;
    font-size: 0.9375rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dropdown-item:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 0;
}

.toggle {
    width: 51px;
    height: 31px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.toggle.active {
    background: var(--success);
}

.toggle::after {
    content: '';
    position: absolute;
    width: 27px;
    height: 27px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle.active::after {
    transform: translateX(20px);
}