/* ============================================
   Voice Agent Management Portal - Styles
   Modern, Professional UI
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: #334155;
    --border-light: #475569;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 64px;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Layout */
#app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition-normal);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.5rem;
}

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

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

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-weight: 500;
}

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

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

.nav-item i {
    font-size: 1.125rem;
    width: 1.5rem;
    text-align: center;
}

.sidebar.collapsed .nav-item span {
    display: none;
}

.sidebar-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning-color);
    animation: pulse 2s infinite;
}

.status-dot.online {
    background: var(--success-color);
}

.status-dot.offline {
    background: var(--danger-color);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.version {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed);
}

/* Top Header */
.top-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

/* Content Wrapper */
.content-wrapper {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

/* Page */
.page {
    animation: fadeIn 0.3s ease;
}

.page.hidden {
    display: none;
}

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

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.card-body {
    padding: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.bg-blue { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.bg-green { background: linear-gradient(135deg, #22c55e, #16a34a); }
.bg-purple { background: linear-gradient(135deg, #a855f7, #9333ea); }
.bg-red { background: linear-gradient(135deg, #ef4444, #dc2626); }
.bg-orange { background: linear-gradient(135deg, #f97316, #ea580c); }

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Dashboard Charts */
.dashboard-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stats-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-percentage {
    font-weight: 600;
    color: var(--primary-color);
}

/* Recent Calls */
.recent-calls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.recent-call-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.recent-call-item:hover {
    background: var(--border-light);
}

.call-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.call-phone {
    font-weight: 500;
    color: var(--text-primary);
}

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

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-initiated { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.status-ringing { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.status-connected { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.status-in_progress { background: rgba(168, 85, 247, 0.2); color: #c084fc; }
.status-completed { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.status-failed { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.status-no_answer { background: rgba(107, 114, 128, 0.2); color: #9ca3af; }
.status-busy { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.status-voicemail { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.status-transferred { background: rgba(168, 85, 247, 0.2); color: #c084fc; }
.status-escalated { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.status-dnc_blocked { background: rgba(220, 38, 38, 0.2); color: #ef4444; }
.status-policy_blocked { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th,
.data-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

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

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn:hover {
    background: var(--border-light);
}

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

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

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

.btn-secondary:hover {
    background: var(--border-light);
}

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

.btn-success:hover {
    background: #16a34a;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-icon {
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

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

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow 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(99, 102, 241, 0.2);
}

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

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-hint {
    display: block;
    margin-top: 0.375rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.required {
    color: var(--danger-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-section {
    margin-bottom: 2rem;
}

.form-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Filters */
.filters-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-group {
    min-width: 150px;
}

.filter-group.flex-grow {
    flex: 1;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlide 0.3s ease;
}

.modal-content.modal-lg {
    max-width: 900px;
}

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

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* KB Tabs */
.kb-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.kb-tab {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.kb-tab.active {
    background: var(--primary-color);
    color: white;
}

.kb-tab-content {
    display: none;
}

.kb-tab-content.active {
    display: block;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 1.5rem;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-area p {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-area small {
    color: var(--text-muted);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

/* Progress Bar */
.upload-progress {
    margin-top: 1.5rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm);
    transition: width 0.3s ease;
    width: 0%;
}

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

/* Query Results */
.query-results {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.query-results h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 600;
}

.result-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.result-source {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
}

.result-score {
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.result-content {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* System Status */
.system-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.status-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

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

.status-badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.healthy {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.status-badge.unhealthy {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.status-badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

/* Channel Badges */
.channel-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: capitalize;
}

.channel-badge.phone {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.channel-badge.web {
    background: rgba(139, 92, 246, 0.2);
    color: #a78bfa;
}

/* Kill Switch */
.kill-switch-status {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.kill-switch-indicator {
    font-size: 2.5rem;
}

.kill-switch-indicator.enabled {
    color: var(--danger-color);
}

.kill-switch-indicator.disabled {
    color: var(--success-color);
}

.kill-switch-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.kill-switch-state {
    font-size: 1.125rem;
    font-weight: 600;
}

.kill-switch-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.kill-switch-actions {
    display: flex;
    gap: 1rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.875rem;
    animation: toastSlide 0.3s ease;
}

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

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

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

.toast.success .toast-icon { color: var(--success-color); }
.toast.error .toast-icon { color: var(--danger-color); }
.toast.warning .toast-icon { color: var(--warning-color); }
.toast.info .toast-icon { color: var(--info-color); }

.toast-content {
    flex: 1;
}

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

.toast-message {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1rem;
    transition: color var(--transition-fast);
}

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

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    z-index: 400;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    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); }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}

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

/* Links */
.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

/* Header Actions Group */
.header-actions-group {
    display: flex;
    gap: 0.75rem;
}

/* Text utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
    
    .system-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-row {
        flex-direction: column;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        font-size: 0.75rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.625rem 0.75rem;
    }
}

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.3s ease;
}

.slide-in {
    animation: slideIn 0.3s ease;
}

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

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

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Audit Log List */
.audit-log-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.audit-log-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.audit-log-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 140px;
}

.audit-log-event {
    font-weight: 500;
    color: var(--primary-color);
    min-width: 150px;
}

.audit-log-details {
    flex: 1;
    color: var(--text-secondary);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.75rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Call Detail Styles */
.call-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.call-detail-section {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 1.25rem;
}

.call-detail-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.detail-row:last-child {
    border-bottom: none;
}

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

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

.transcript-box {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    max-height: 300px;
    overflow-y: auto;
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre-wrap;
}