/* HeizungsManager - Main Stylesheet */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --sidebar-bg: #1e293b;
    --sidebar-text: #e2e8f0;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-color);
    min-height: 100vh;
}

#app {
    min-height: 100vh;
}

/* Layout */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    min-height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
}

.sidebar-header small {
    color: var(--sidebar-text);
    opacity: 0.7;
}

.sidebar nav {
    padding: 1rem 0;
}

.nav-item {
    margin: 0.25rem 0.75rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

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

.nav-link .icon {
    width: 20px;
    height: 20px;
    opacity: 0.8;
}

.nav-section {
    padding: 0.5rem 1.5rem;
    margin-top: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sidebar-text);
    opacity: 0.5;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.content {
    flex: 1;
    padding: 2rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-color);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.stat-card .stat-icon.primary { background: rgba(37, 99, 235, 0.1); color: var(--primary-color); }
.stat-card .stat-icon.success { background: rgba(34, 197, 94, 0.1); color: var(--success-color); }
.stat-card .stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); }
.stat-card .stat-icon.danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

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

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

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

.btn-secondary:hover:not(:disabled) {
    background: #475569;
    border-color: #475569;
}

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

.btn-success:hover:not(:disabled) {
    background: #16a34a;
    border-color: #16a34a;
}

.btn-warning {
    background: var(--warning-color);
    color: #fff;
    border-color: var(--warning-color);
}

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

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

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

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

.btn-outline-primary:hover:not(:disabled) {
    background: var(--primary-color);
    color: #fff;
}

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

.btn-outline-secondary:hover:not(:disabled) {
    background: var(--bg-color);
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

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

.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary-color);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.validation-message {
    color: var(--danger-color);
    font-size: 0.8125rem;
    margin-top: 0.25rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-color);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.table-striped tbody tr:nth-child(even) {
    background: var(--bg-color);
}

/* Table row colors */
.table-success,
.table tbody tr.table-success {
    background-color: #d1fae5 !important;
}

.table-success:hover,
.table tbody tr.table-success:hover {
    background-color: #a7f3d0 !important;
}

.table-danger,
.table tbody tr.table-danger {
    background-color: #fee2e2 !important;
}

.table-warning,
.table tbody tr.table-warning {
    background-color: #fef3c7 !important;
}

.table-info,
.table tbody tr.table-info {
    background-color: #dbeafe !important;
}

.table-light,
.table thead.table-light th {
    background-color: #f8fafc !important;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-primary { background: rgba(37, 99, 235, 0.1); color: var(--primary-color); }
.badge-success { background: rgba(34, 197, 94, 0.1); color: var(--success-color); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: #b45309; }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }
.badge-secondary { background: rgba(100, 116, 139, 0.1); color: var(--secondary-color); }
.badge-info { background: rgba(6, 182, 212, 0.1); color: #0891b2; }

/* Status indicators */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-dot.online { background: var(--success-color); }
.status-dot.offline { background: var(--secondary-color); }
.status-dot.warning { background: var(--warning-color); }
.status-dot.error { background: var(--danger-color); }

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: #166534;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #991b1b;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #92400e;
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    color: #0e7490;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.tab {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

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

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

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 1001;
}

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

.modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

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

/* Grid utilities */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

/* Spacing utilities */
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }

/* Text utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-muted { color: var(--text-secondary); }

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

.login-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    margin: 0;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: var(--primary-color);
    color: #fff;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
}

/* Heizung cards */
.heizung-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    transition: box-shadow 0.2s ease;
}

.heizung-card:hover {
    box-shadow: var(--shadow-md);
}

.heizung-card .heizung-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.heizung-card .heizung-name {
    font-weight: 600;
    font-size: 1.125rem;
    margin: 0 0 0.25rem;
}

.heizung-card .heizung-location {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.heizung-card .heizung-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.heizung-card .info-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.heizung-card .info-item span {
    font-weight: 500;
}

/* Temperature display */
.temp-display {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.temp-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.temp-unit {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Measurement grid */
.measurement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.measurement-item {
    background: var(--bg-color);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.measurement-item .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.measurement-item .value {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Fault list */
.fault-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.fault-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--radius);
    border-left: 4px solid var(--border-color);
}

.fault-item.kritisch { border-left-color: var(--danger-color); }
.fault-item.hoch { border-left-color: var(--warning-color); }
.fault-item.mittel { border-left-color: var(--info-color); }
.fault-item.niedrig { border-left-color: var(--secondary-color); }

.fault-item .fault-info {
    flex: 1;
}

.fault-item .fault-code {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.fault-item .fault-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.fault-item .fault-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Loading spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Password field with toggle */
.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 45px !important;
    width: 100%;
}

.password-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    opacity: 0.7;
    transition: opacity 0.2s;
    z-index: 10;
}

.password-toggle:hover {
    opacity: 1;
}

.password-toggle:focus {
    outline: none;
    opacity: 1;
}

/* User list for search results */
.user-list-item {
    transition: background-color 0.15s ease;
}

.user-list-item:hover {
    background-color: #e9ecef;
}

.user-list-item.selected {
    background-color: #d4edda !important;
    border-left: 4px solid #28a745;
}

/* Heizung Card New Design */
.heizung-card-new {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.heizung-card-new:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.heizung-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.heizung-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.heizung-title h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.heizung-timestamp {
    text-align: right;
}

.heizung-card-body {
    padding-top: 0.5rem;
}

/* Button Groups */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.button-group .btn {
    white-space: nowrap;
}

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

.dropdown-toggle::after {
    display: none;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    min-width: 200px;
    padding: 0.5rem 0;
    margin: 0.125rem 0 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: background-color 0.15s;
}

.dropdown-item:hover {
    background-color: #f1f5f9;
}

.dropdown-item:focus {
    outline: none;
    background-color: #e2e8f0;
}

/* Search box styling */
.search-box {
    position: relative;
    max-width: 500px;
    margin-bottom: 1rem;
}

.search-box .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1rem;
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--card-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.search-box .clear-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    font-size: 1.1rem;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.search-box .clear-btn:hover {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content {
        padding: 1rem;
    }
}