/**
 * TTLock Modern Frontend CSS
 * Modern web interface with advanced UI components
 */

/* CSS Variables for theming */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #1e293b;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-white: #ffffff;
    
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --border-dark: #d1d5db;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --sidebar-width: 280px;
    --header-height: 70px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme variables */
.theme-dark {
    --bg-primary: #1e293b;
    --bg-secondary: #334155;
    --bg-tertiary: #475569;
    --bg-dark: #0f172a;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #475569;
    --border-light: #334155;
    --border-dark: #64748b;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
}

.ttlock-modern-app {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.app-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1.5rem;
    max-width: 100%;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 2rem;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.global-search {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.global-search:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header-stats {
    display: flex;
    gap: 1.5rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.user-avatar:hover {
    background: var(--primary-dark);
}

/* App Body */
.app-body {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* Sidebar Styles */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: white;
}

.nav-link i {
    width: 1.25rem;
    text-align: center;
    font-size: 1rem;
}

.nav-link span {
    font-weight: 500;
}

.nav-badge {
    background: var(--danger-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.125rem 0.375rem;
    border-radius: 0.75rem;
    margin-left: auto;
    min-width: 1.25rem;
    text-align: center;
    line-height: 1;
}

/* Main Content */
.app-main {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    position: relative;
}

/* View Containers */
.view-container {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view-container.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.page-actions {
    display: flex;
    gap: 0.75rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-light);
}

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

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-warning:hover:not(:disabled) {
    background: #d97706;
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-info {
    background: var(--info-color);
    color: white;
}

.btn-info:hover:not(:disabled) {
    background: #0891b2;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 1rem 1.5rem;
    font-size: 1rem;
}

/* Dashboard Styles */
.dashboard-container {
    max-width: 100%;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-fast);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-content {
    flex: 1;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-change {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

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

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

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.dashboard-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
}

.card-content {
    padding: 1.5rem;
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    cursor: pointer;
}

.quick-action-btn:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-action-btn i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.quick-action-btn span {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Activity List */
.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Filters */
.filters-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.filters-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-input,
.filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Bulk Actions */
.bulk-actions-container {
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bulk-actions-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.bulk-selection-count {
    font-weight: 500;
}

.bulk-actions-buttons {
    display: flex;
    gap: 0.5rem;
}

.bulk-actions-buttons .btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.bulk-actions-buttons .btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* View Toggle */
.view-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.view-btn.active,
.view-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Locks Grid */
.locks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.lock-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition-fast);
    position: relative;
}

.lock-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.lock-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.lock-checkbox {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.lock-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.lock-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.lock-status {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.lock-status.locked {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.lock-status.unlocked {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.lock-details {
    margin-bottom: 1rem;
}

.lock-detail-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.lock-detail-label {
    color: var(--text-secondary);
}

.lock-detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

.battery-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.battery-bar {
    width: 2rem;
    height: 0.5rem;
    background: var(--border-color);
    border-radius: 0.25rem;
    overflow: hidden;
}

.battery-fill {
    height: 100%;
    transition: var(--transition);
}

.battery-fill.high {
    background: var(--success-color);
}

.battery-fill.medium {
    background: var(--warning-color);
}

.battery-fill.low {
    background: var(--danger-color);
}

.lock-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Table Styles */
.table-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

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

.modern-table th,
.modern-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.modern-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.modern-table tbody tr.selected {
    background: rgba(59, 130, 246, 0.05);
}

.checkbox-column {
    width: 3rem;
}

.actions-column {
    width: 12rem;
}

.sortable {
    cursor: pointer;
    user-select: none;
}

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

.sortable i {
    margin-left: 0.5rem;
    opacity: 0.5;
    transition: var(--transition-fast);
}

.sortable.sorted i {
    opacity: 1;
    color: var(--primary-color);
}

.select-all-checkbox {
    transform: scale(1.1);
}

/* Status Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-badge.frozen {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.status-badge.expired {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-muted);
}

/* Pagination */
.pagination-container {
    display: flex;
    align-items: center;
    justify-content: between;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.page-numbers {
    display: flex;
    gap: 0.25rem;
}

.page-number {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.page-number:hover {
    background: var(--bg-tertiary);
}

.page-number.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Loading States */
.loading-overlay {
    position: absolute;
    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: 1000;
    backdrop-filter: blur(2px);
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-placeholder {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.placeholder-item {
    height: 200px;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--border-light) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    border-radius: var(--radius-lg);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.loading-row {
    height: 4rem;
}

.text-center {
    text-align: center;
}

/* Floating Action Button */
.fab-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.fab {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

.fab:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.fab-menu {
    position: absolute;
    bottom: 4rem;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0.75rem;
    animation: fadeInUp 0.3s ease-out;
}

.fab-menu.active {
    display: flex;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fab-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
    white-space: nowrap;
}

.fab-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(-5px);
}

.fab-item i {
    color: var(--primary-color);
}

/* Notifications */
.notifications-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

.notification {
    padding: 1rem;
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

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

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

.notification.error {
    background: var(--danger-color);
}

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

.notification.info {
    background: var(--info-color);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notification-icon {
    font-size: 1.25rem;
}

.notification-text {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.notification-message {
    font-size: 0.875rem;
    opacity: 0.9;
}

.notification-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    opacity: 0.7;
    transition: var(--transition-fast);
}

.notification-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

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

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 4rem;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-checkbox input {
    margin: 0;
}

.form-error {
    color: var(--danger-color);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.form-help {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-sidebar {
        transform: translateX(-100%);
        position: fixed;
        top: var(--header-height);
        left: 0;
        height: calc(100vh - var(--header-height));
        z-index: 1000;
    }
    
    .app-sidebar.open {
        transform: translateX(0);
    }
    
    .app-main {
        margin-left: 0;
    }
    
    .header-center {
        margin: 0 1rem;
    }
    
    .header-stats {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .locks-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .page-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .filters-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .search-input,
    .filter-select {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .locks-grid {
        grid-template-columns: 1fr;
    }
    
    .bulk-actions-content {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .bulk-actions-buttons {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .pagination-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination-controls {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
    
    .fab-container {
        bottom: 1rem;
        right: 1rem;
    }
    
    .fab {
        width: 3rem;
        height: 3rem;
        font-size: 1rem;
    }
    
    .modal {
        margin: 1rem;
        max-width: calc(100vw - 2rem);
    }
    
    .notifications-container {
        left: 1rem;
        right: 1rem;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .app-title {
        font-size: 1.25rem;
    }
    
    .global-search {
        font-size: 0.8rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .modern-table {
        font-size: 0.8rem;
    }
    
    .modern-table th,
    .modern-table td {
        padding: 0.5rem;
    }
    
    .lock-card {
        padding: 1rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .card-content {
        padding: 1rem;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    .app-header,
    .app-sidebar,
    .page-actions,
    .filters-container,
    .bulk-actions-container,
    .fab-container,
    .notifications-container {
        display: none !important;
    }
    
    .app-main {
        margin-left: 0;
    }
    
    .main-content {
        padding: 0;
    }
    
    .ttlock-modern-app {
        background: white;
        color: black;
    }
    
    .dashboard-card,
    .lock-card,
    .table-container {
        border: 1px solid #000;
        box-shadow: none;
    }
}