/* 
 * RTC Log Viewer Style Sheet
 * A technical analysis interface for WebRTC connection logs
 */

/* -----------------------------
 * DESIGN TOKENS
 * -----------------------------*/
:root {
    /* Color System */
    --color-primary: #3498db;
    --color-primary-dark: #2980b9;
    --color-secondary: #2c3e50;
    --color-success: #27ae60;
    --color-warning: #e67e22;
    --color-error: #e74c3c;
    --color-info: #3498db;

    /* Neutral Colors */
    --color-bg-light: #f8f9fa;
    --color-bg-medium: #e9ecef;
    --color-bg-dark: #dee2e6;
    --color-surface: #fff;
    --color-border: #ced4da;

    /* Text Colors */
    --color-text-primary: #333;
    --color-text-secondary: #666;
    --color-text-muted: #777;
    --color-text-light: #fff;

    /* State Colors */
    --color-state-connected: var(--color-success);
    --color-state-connecting: var(--color-warning);
    --color-state-disconnected: var(--color-error);

    /* Spacing Scale */
    --space-xxs: 2px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-xxl: 32px;

    /* Typography */
    --font-family: monospace;
    --font-size-xxs: 0.625rem;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-xxl: 1.5rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;
    --line-height: 1.5;
    --line-height-tight: 1.25;

    /* Borders & Shadows */
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 8px;
    --radius-full: 9999px;
    --border-width: 1px;
    --border-style: solid;
    --border: var(--border-width) var(--border-style) var(--color-border);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 5px 15px rgba(0, 0, 0, 0.2);

    /* Component Dimensions */
    --sidebar-width: 20%;
    --header-height: 50px;
    --event-list-max-height: 300px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 1000;
    --z-tooltip: 1050;

    /* Legacy compatibility - these will be gradually phased out */
    --accent-color: var(--color-success);
    --warning-color: var(--color-warning);
    --error-color: var(--color-error);
    --text-color: var(--color-text-primary);
    --light-bg: var(--color-bg-light);
    --medium-bg: var(--color-bg-medium);
    --dark-bg: var(--color-bg-dark);
    --card-bg: var(--color-surface);
    --radius: var(--radius-md);
    --status-connected: var(--color-state-connected);
    --status-connecting: var(--color-state-connecting);
    --status-disconnected: var(--color-state-disconnected);
}

/* -----------------------------
 * BASE ELEMENTS
 * -----------------------------*/
body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--color-text-primary);
    margin: 0;
    padding: 0;
    background-color: var(--color-bg-light);
}

#app {
    max-width: 80%;
    margin: 0 auto;
    padding: var(--space-xl);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-secondary);
    margin-top: 0;
    line-height: var(--line-height-tight);
    font-weight: var(--font-weight-bold);
}

p {
    margin-top: 0;
    margin-bottom: var(--space-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button {
    cursor: pointer;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    transition: background-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-fast);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    background-color: var(--color-bg-medium);
    color: var(--color-text-primary);
}

button:not(:disabled):hover {
    background-color: var(--color-bg-dark);
}

button:not(:disabled):active {
    transform: translateY(1px);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Common button variants */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

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

select,
input {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    border: var(--border);
    background-color: var(--color-surface);
    margin-right: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
}

select:focus,
input:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -1px;
    border-color: transparent;
}

label {
    font-weight: var(--font-weight-medium);
    margin-right: var(--space-xs);
}

/* -----------------------------
 * LAYOUT COMPONENTS
 * -----------------------------*/
.log-content {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.info-panel {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: var(--space-md);
    max-height: calc(100vh - var(--space-md) * 2);
    overflow-y: auto;
}

.main-view {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    overflow: auto;
    max-height: 90vh;
}

.app-footer {
    padding: var(--space-lg);
}

.download-info {
    font-size: var(--font-size-xxs);
    font-style: italic;
}

/* Panel with header and content structure */
.panel {
    border: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-medium);
    border-bottom: var(--border);
}

.panel-title {
    margin: 0;
    font-size: var(--font-size-base);
}

.panel-content {
    padding: var(--space-md);
    background-color: var(--color-surface);
}

/* Card components */
.card {
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    border: var(--border);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.card-header {
    padding: var(--space-sm) var(--space-md);
    border-bottom: var(--border);
    background-color: var(--color-bg-light);
}

.card-body {
    padding: var(--space-md);
}

/* -----------------------------
 * TYPOGRAPHY UTILITIES
 * -----------------------------*/
.text-xs {
    font-size: var(--font-size-xs);
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-base {
    font-size: var(--font-size-base);
}

.text-lg {
    font-size: var(--font-size-lg);
}

.text-bold {
    font-weight: var(--font-weight-bold);
}

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

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

.text-ellipsis {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.view-description {
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: var(--space-lg);
    max-width: 80ch;
}

/* -----------------------------
 * FILE UPLOAD COMPONENT
 * -----------------------------*/
.file-upload-container {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.file-upload-container.drag-over {
    border-color: var(--color-primary);
    background-color: rgba(52, 152, 219, 0.05);
    transform: scale(1.01);
    box-shadow: var(--shadow-md);
}

.file-input {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--space-lg);
}

.file-input input[type="file"] {
    display: none;
}

.file-input button {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--space-sm) var(--space-lg);
    font-weight: var(--font-weight-medium);
}

.file-input button:hover {
    background-color: var(--color-primary-dark);
}

.demo-loader {
    margin-top: var(--space-sm);
}

.demo-button {
    background: none;
    border: none;
    padding: 0;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-decoration: underline;
}

.demo-button:hover {
    color: var(--color-secondary);
}

.file-name {
    margin-left: var(--space-sm);
    font-weight: var(--font-weight-bold);
}

.file-hint {
    margin-left: var(--space-sm);
    color: var(--color-text-muted);
}

.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xxl);
    text-align: center;
    margin: var(--space-xl) auto;
    max-width: 600px;
    transition: all var(--transition-normal);
    background-color: rgba(255, 255, 255, 0.7);
}

.drop-zone-prompt {
    margin-bottom: var(--space-lg);
}

.drop-icon {
    display: inline-block;
    width: 50px;
    height: 50px;
    margin: 0 auto var(--space-sm);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233498db' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'/%3E%3Cpolyline points='7 10 12 15 17 10'/%3E%3Cline x1='12' y1='15' x2='12' y2='3'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.drop-zone-prompt p {
    margin: var(--space-xs) 0;
    color: var(--color-text-secondary);
}

/* -----------------------------
 * SYSTEM INFO & VIEW CONTROLS
 * -----------------------------*/
.system-info {
    margin-bottom: var(--space-xl);
}

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

.system-info td {
    padding: var(--space-xs);
    border-bottom: var(--border);
}

.system-info td:first-child {
    font-weight: var(--font-weight-bold);
    width: 40%;
}

.view-controls {
    margin-top: var(--space-xl);
}

.view-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.view-btn {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast),
        color var(--transition-fast);
    font-size: var(--font-size-sm);
}

.view-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
}

/* View options (tabs) */
.view-option {
    background-color: var(--color-bg-medium);
    margin-right: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}

.view-option.active {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
}

/* Filter sections styling */
.filter-section {
    margin-top: var(--space-md);
    border: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-medium);
}

.filter-header h4 {
    margin: 0;
    flex-grow: 1;
    font-size: var(--font-size-base);
}

.filter-count {
    margin-right: var(--space-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.filter-toggle {
    background-color: transparent;
    color: var(--color-text-primary);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    padding: 0;
}

.filter-content {
    padding: var(--space-sm);
    background-color: var(--color-bg-light);
}

.filter-actions {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.filter-action-btn {
    background-color: var(--color-bg-medium);
    border: var(--border);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
}

.filter-items {
    max-height: 200px;
    overflow-y: auto;
    border: var(--border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
}

.filter-item {
    padding: var(--space-xs) var(--space-sm);
    border-bottom: var(--border);
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.timeline-label,
.snapshot-label {
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* -----------------------------
 * TIMELINE & SNAPSHOT COMPONENTS
 * -----------------------------*/
.timeline-list,
.snapshot-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.timeline-viewer,
.snapshot-viewer {
    border: var(--border);
    border-radius: var(--radius-md);
    overflow: visible;
    background-color: var(--color-surface);
}

/* Header components */
.timeline-header,
.snapshot-header,
.log-viewer-header,
.session-row-header,
.sticky-popup-header {
    display: flex;
    justify-content: space-between;
    cursor: pointer;
    align-items: center;
    padding: var(--space-md);
    background-color: var(--color-bg-medium);
    border-bottom: var(--border);
}

.timeline-header h4,
.snapshot-header h4 {
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Toggle buttons */
.timeline-toggle,
.snapshot-toggle,
.session-toggle,
.instance-toggle,
.issue-toggle {
    background-color: transparent;
    color: var(--color-text-primary);
    border: none;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 18px;
    cursor: pointer;
    padding: 0;
}

/* Content areas */
.timeline-content,
.snapshot-content,
.log-viewer-content {
    padding: var(--space-lg);
    overflow: visible;
}

/* Tab systems */
.session-tabs,
.log-tabs {
    display: flex;
    overflow-x: auto;
    border-bottom: var(--border);
    margin-bottom: var(--space-lg);
    scrollbar-width: thin;
}

.session-tab,
.log-tab {
    padding: var(--space-sm) var(--space-lg);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.session-tab.active,
.log-tab.active {
    border-bottom-color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.self-indicator {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    margin-left: var(--space-xs);
    font-size: var(--font-size-sm);
}

.connection-step,
.connection-state {
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.step-value,
.state-value,
.property-value {
    font-weight: var(--font-weight-bold);
}

/* -----------------------------
 * EVENT LISTS
 * -----------------------------*/
.event-list {
    max-height: var(--event-list-max-height);
    overflow-y: auto;
    border: var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    scrollbar-width: thin;
}

.event-item {
    padding: var(--space-sm) var(--space-md);
    border-bottom: var(--border);
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-fast);
    line-height: var(--line-height);
}

.event-items-virtual {
    position: relative;
}

.event-items-window {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
}

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

.event-item.warn,
.event-item.warning {
    background-color: rgba(230, 126, 34, 0.08);
}

.event-item.error {
    background-color: rgba(231, 76, 60, 0.08);
}

.event-item.highlighted {
    background-color: rgba(52, 152, 219, 0.15);
    animation: pulse 1.5s;
}

.event-time {
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-sm);
    color: var(--color-text-muted);
    font-family: monospace;
}

.event-level {
    display: inline-block;
    padding: 2px 5px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    margin-right: var(--space-sm);
    text-transform: uppercase;
    font-weight: var(--font-weight-medium);
}

.event-level.info {
    background-color: rgba(52, 152, 219, 0.15);
    color: #2980b9;
}

.event-level.warn,
.event-level.warning {
    background-color: rgba(230, 126, 34, 0.15);
    color: #d35400;
}

.event-level.error {
    background-color: rgba(231, 76, 60, 0.15);
    color: #c0392b;
}

/* -----------------------------
 * INDICATORS & STATUS
 * -----------------------------*/
.no-data {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
    font-style: italic;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-light);
    margin: var(--space-md) 0;
}

/* Status indicators */
.state-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: var(--space-xs);
    flex-shrink: 0;
}

.state-indicator.connected {
    background-color: var(--color-state-connected);
    box-shadow: 0 0 0 2px rgba(39, 174, 96, 0.2);
}

.state-indicator.connecting {
    background-color: var(--color-state-connecting);
    box-shadow: 0 0 0 2px rgba(230, 126, 34, 0.2);
}

.state-indicator.disconnected,
.state-indicator.failed {
    background-color: var(--color-state-disconnected);
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
}

/* Event indicators */
.event-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--space-sm);
    flex-shrink: 0;
}

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

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

.event-indicator.error {
    background-color: var(--color-error);
}

/* -----------------------------
 * SNAPSHOTS & SESSION DETAILS
 * -----------------------------*/
.connection-overview {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: var(--border);
}

.connection-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.connection-type,
.fallback-mode {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-xs);
}

.server-info,
.sessions-list {
    margin-bottom: var(--space-lg);
}

.server-properties {
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
}

.server-properties>div {
    margin-bottom: var(--space-sm);
}

.error-list {
    margin: var(--space-xs) 0 0 0;
    padding-left: var(--space-xl);
    color: var(--color-error);
}

.json-data {
    margin: var(--space-xs) 0 0 0;
    padding: var(--space-sm);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: pre-wrap;
    overflow-x: auto;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

/* Session components */
.session-item {
    margin-bottom: var(--space-lg);
    border: var(--border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-light);
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-fast);
}

.session-header:hover {
    background-color: var(--color-bg-medium);
}

.session-header h6 {
    margin: 0;
    font-size: var(--font-size-base);
}

.session-detail {
    padding: var(--space-md);
    background-color: var(--color-bg-light);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.session-properties {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.property-card {
    background-color: var(--color-bg-light);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: var(--border);
}

.property-card h6 {
    margin-top: 0;
    margin-bottom: var(--space-xs);
    border-bottom: var(--border);
    padding-bottom: var(--space-xs);
    color: var(--color-primary-dark);
}

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

.property-list li {
    padding: 3px 0;
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
}

.property-name {
    color: var(--color-text-secondary);
    font-weight: normal;
}

/* Raw data view */
.raw-data-container {
    overflow: hidden;
}

.raw-data {
    max-height: 70vh;
    overflow: auto;
    background-color: var(--color-bg-light);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.raw-data pre {
    margin: 0;
    white-space: pre-wrap;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.timeline-selector,
.snapshot-selector,
.session-selector {
    margin-bottom: var(--space-xl);
}

/* -----------------------------
 * VISUAL TIMELINE
 * -----------------------------*/
.timeline-container {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    border: var(--border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-light);
}

.visual-timeline-container {
    margin: var(--space-md) 0;
    border: var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    background-color: var(--color-bg-light);
    position: relative;
    overflow: visible;
}

.visual-timeline-container h5 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-base);
}

.visual-timeline {
    position: relative;
    height: 30px;
    margin: 20px 0 10px;
    overflow: visible;
}

/* Timeline segments by connection state */
.timeline-segment {
    cursor: help;
    position: absolute;
    top: 13px;
    height: 4px;
    border-radius: 2px;
    z-index: 1;
}

.timeline-segment.undefined-state {
    background-color: var(--color-bg-medium);
    background-image: linear-gradient(90deg, var(--color-bg-medium) 50%, transparent 50%);
    background-size: 10px 4px;
    background-repeat: repeat-x;
}

.timeline-segment.connected {
    background-color: var(--color-state-connected);
}

.timeline-segment.connecting,
.timeline-segment.new {
    background-color: var(--color-state-connecting);
}

.timeline-segment.disconnected,
.timeline-segment.failed,
.timeline-segment.closed {
    background-color: var(--color-state-disconnected);
}

.timeline-times {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
    font-family: monospace;
}

.visual-timeline .timeline-event {
    position: absolute;
    top: 15px;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    z-index: 5;
    cursor: pointer;
    border: 2px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
    background-color: var(--color-info);
    /* Default color */
}

.visual-timeline .timeline-event.info {
    background-color: var(--color-info);
}

.visual-timeline .timeline-event.warning,
.visual-timeline .timeline-event.warn {
    background-color: var(--color-warning);
}

.visual-timeline .timeline-event.error {
    background-color: var(--color-error);
}

.visual-timeline .timeline-event:hover {
    transform: scale(1.3);
    z-index: 6;
}

/* Session rows in timeline */
.timeline-sessions {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.session-row {
    border: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-surface);
}

.session-row.self-session {
    border-color: var(--color-primary);
}

.session-row.self-session .visual-timeline-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(52, 152, 219, 0.05);
    z-index: 1;
    pointer-events: none;
}

.session-title {
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.session-row .visual-timeline-container {
    margin: var(--space-xs) 0;
    padding: var(--space-sm) var(--space-lg);
    background-color: transparent;
    border: none;
    position: relative;
}

.session-row .visual-timeline {
    height: 20px;
    margin: var(--space-xs) 0;
}

.session-row .timeline-segment {
    top: 8px;
    height: 4px;
}

.session-row .timeline-event {
    top: 10px;
    width: 8px;
    height: 8px;
}

/* Session details */
.session-details {
    padding: var(--space-md);
    border-top: var(--border);
    background-color: var(--color-bg-light);
}

/* -----------------------------
 * ZOOM CONTROL
 * -----------------------------*/
.zoom-navigator {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: var(--border);
}

.zoom-overview {
    margin-bottom: var(--space-sm);
    padding: var(--space-xs) 0;
}

.zoom-overview-bar {
    position: relative;
    height: 30px;
    width: 100%;
    background-color: var(--color-bg-medium);
    border-radius: var(--radius-full);
    overflow: visible;
}

.zoom-overview-timeline {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-bg-dark);
    transform: translateY(-50%);
}

/* Event markers in overview */
.zoom-overview-event {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    margin-left: -2px;
}

.zoom-overview-event.info {
    background-color: var(--color-info);
}

.zoom-overview-event.warning {
    background-color: var(--color-warning);
}

.zoom-overview-event.error {
    background-color: var(--color-error);
}

.zoom-selector {
    position: absolute;
    top: 0;
    height: 100%;
    background-color: rgba(52, 152, 219, 0.2);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-full);
    cursor: grab;
    transition: background-color var(--transition-fast);
}

.zoom-selector:hover {
    background-color: rgba(52, 152, 219, 0.3);
}

.zoom-selector:active {
    cursor: grabbing;
    background-color: rgba(52, 152, 219, 0.4);
}

/* Zoom handles */
.zoom-handle {
    position: absolute;
    cursor: ew-resize;
    top: 50%;
    width: 4px;
    height: 24px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    transform: translateY(-50%);
    border: 2px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-fast);
}

.zoom-handle-left {
    left: -6px;
}

.zoom-handle-right {
    right: -6px;
}

.zoom-handle:hover {
    background-color: var(--color-primary-dark);
}

/* Zoom control buttons */
.zoom-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.zoom-control-btn {
    background-color: var(--color-bg-medium);
    border-radius: var(--radius-md);
    border: var(--border);
    padding: var(--space-xs) var(--space-md);
    font-weight: var(--font-weight-medium);
}

.zoom-duration {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
    padding: 4px 0;
    font-family: monospace;
}

/* Event grouping */
.event-group {
    position: absolute;
    top: 10px;
    transform: translateY(-50%);
    z-index: 10;
}

.event-cluster {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    border: 2px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform var(--transition-fast),
        background-color var(--transition-fast);
}

.event-cluster:hover {
    transform: scale(1.2);
    background-color: var(--color-primary-dark);
}

/* -----------------------------
 * POPUPS & TOOLTIPS
 * -----------------------------*/
.sticky-event-popup {
    position: fixed;
    background: var(--color-surface);
    border: var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 250px;
    max-width: 350px;
    max-height: 400px;
    z-index: var(--z-modal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.popup-close-btn {
    background: none;
    border: none;
    font-size: 20px;
    line-height: 1;
    padding: 0 var(--space-xs);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.popup-close-btn:hover {
    color: var(--color-error);
}

.sticky-popup-content {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    max-height: 300px;
    scrollbar-width: thin;
}

.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: transparent;
    z-index: calc(var(--z-modal) - 1);
}

/* Popup event styles */
.popup-event {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    border-bottom: var(--border);
    transition: background-color var(--transition-fast);
}

.popup-event:last-child {
    border-bottom: none;
}

.popup-event:hover {
    background-color: var(--color-bg-light);
}

.event-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow: hidden;
}

/* Tooltips */
.event-tooltip {
    position: fixed;
    background-color: rgba(0, 0, 0, 0.9);
    color: var(--color-text-light);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    pointer-events: none;
    z-index: var(--z-tooltip);
    min-width: 180px;
    max-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn var(--transition-fast);
}

.tooltip-time {
    font-weight: var(--font-weight-bold);
    margin-bottom: 3px;
    color: #ccc;
    font-family: monospace;
}

.tooltip-level {
    display: inline-block;
    padding: 2px 5px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    margin-bottom: 5px;
    text-transform: uppercase;
}

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

.tooltip-level.warn,
.tooltip-level.warning {
    background-color: var(--color-warning);
}

.tooltip-level.error {
    background-color: var(--color-error);
}

.tooltip-text {
    word-break: break-word;
    white-space: normal;
    max-width: 300px;
}

/* -----------------------------
 * ANALYSIS VIEW
 * -----------------------------*/
.analysis-view {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.stats-view {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.incident-cockpit {
    border: var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    background:
        radial-gradient(circle at 100% 0, rgba(52, 152, 219, 0.12), transparent 45%),
        var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.incident-cockpit-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
}

.health-pill {
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
    padding: 6px 12px;
    border: 1px solid transparent;
    white-space: nowrap;
}

.health-pill.good {
    background-color: rgba(39, 174, 96, 0.12);
    color: #1f7a45;
    border-color: rgba(39, 174, 96, 0.3);
}

.health-pill.warning {
    background-color: rgba(230, 126, 34, 0.14);
    color: #9c4d12;
    border-color: rgba(230, 126, 34, 0.4);
}

.health-pill.critical {
    background-color: rgba(231, 76, 60, 0.14);
    color: #9d2d22;
    border-color: rgba(231, 76, 60, 0.4);
}

.cockpit-kpis {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.cockpit-kpi {
    border: var(--border);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    background-color: var(--color-bg-light);
}

.kpi-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.kpi-value {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
}

.anomaly-kpi {
    grid-column: span 2;
}

.anomaly-list {
    margin: var(--space-xs) 0 0;
    padding-left: var(--space-md);
    font-size: var(--font-size-sm);
}

.anomaly-list li + li {
    margin-top: 2px;
}

.trend-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--space-sm);
}

.trend-card {
    border: var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface);
    padding: var(--space-sm);
}

.trend-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-xs);
}

.trend-header h5 {
    margin: 0;
    font-size: var(--font-size-sm);
}

.trend-samples {
    font-size: var(--font-size-xxs);
    color: var(--color-text-muted);
}

.trend-values {
    display: flex;
    justify-content: space-between;
    margin: var(--space-xs) 0;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.trend-sparkline {
    width: 100%;
    height: 30px;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.sparkline-path {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.analysis-content {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.analysis-toolbar {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.stats-content {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.stats-panels {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}


.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.stats-card {
    background-color: var(--color-surface);
    border: var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
}

.stats-card h5 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
}

.stats-samples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.stats-samples-column h6,
.stats-samples-column h5 {
    margin: 0 0 var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.stats-sample-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stats-sample-item {
    background-color: var(--color-bg-light);
    border-radius: var(--radius-sm);
    padding: var(--space-xs);
    display: flex;
    flex-direction: column;
    gap: var(--space-xxs);
    font-size: var(--font-size-xs);
}

.sample-duration {
    font-weight: var(--font-weight-bold);
}

.sample-meta {
    color: var(--color-text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xxs);
}

.sample-separator {
    color: var(--color-text-muted);
}

.stats-metric {
    display: flex;
    justify-content: space-between;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    padding: var(--space-xs) 0;
}

.stats-metric + .stats-metric {
    border-top: 1px solid var(--color-bg-medium);
}

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

.metric-value {
    font-weight: var(--font-weight-bold);
}

.stats-empty {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.issue-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.issue-item {
    border: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

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

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

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

.issue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-light);
    transition: background-color var(--transition-fast);
}

.issue-header:hover {
    background-color: var(--color-bg-medium);
}

.issue-title {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.issue-icon {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.issue-icon.error {
    background-color: var(--color-error);
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
}

.issue-icon.warning {
    background-color: var(--color-warning);
    box-shadow: 0 0 0 2px rgba(230, 126, 34, 0.2);
}

.issue-icon.info {
    background-color: var(--color-info);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.issue-description {
    padding: var(--space-sm) var(--space-md);
    border-bottom: var(--border);
    color: var(--color-text-secondary);
    line-height: var(--line-height);
}

.issue-details {
    padding: var(--space-md);
    background-color: var(--color-bg-light);
}

.issue-metadata {
    margin-bottom: var(--space-sm);
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.metadata-label {
    font-weight: var(--font-weight-bold);
    min-width: 100px;
}

.issue-technical-details {
    margin-top: var(--space-md);
    background-color: var(--color-bg-medium);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
}

.issue-technical-details pre {
    margin: 0;
    overflow-x: auto;
    font-size: var(--font-size-sm);
    font-family: monospace;
}

.issue-recommendation {
    margin-top: var(--space-md);
    background-color: rgba(39, 174, 96, 0.08);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-success);
}

.issue-recommendation h6 {
    margin-top: 0;
    color: var(--color-success);
}

.no-issues-found {
    text-align: center;
    padding: var(--space-xl);
    background-color: rgba(39, 174, 96, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid rgba(39, 174, 96, 0.2);
}

.loading-analysis {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-secondary);
}

.issue-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-left: var(--space-xs);
    font-weight: normal;
}

.instance-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: var(--space-xs) var(--space-md);
    background-color: var(--color-bg-light);
    margin-bottom: var(--space-xs);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.instance-header:hover {
    background-color: var(--color-bg-medium);
}

.instance-title {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

/* Source indicators for both instances and single issues */
.instance-source,
.source-tag {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    background-color: var(--color-bg-medium);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    display: inline-block;
}

.source-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.snapshot-source {
    background-color: rgba(52, 152, 219, 0.15);
    color: #2980b9;
}

.timeline-source {
    background-color: rgba(46, 204, 113, 0.15);
    color: #27ae60;
}

.unknown-source {
    background-color: rgba(149, 165, 166, 0.15);
    color: #7f8c8d;
}

.issue-instance {
    border-left: 2px solid var(--color-bg-medium);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-xs);
}

.instance-details {
    padding: var(--space-xs) var(--space-md);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    margin-top: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.issue-instances {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background-color: rgba(220, 220, 220, 0.2);
    border-radius: var(--radius-md);
}

.issue-instances h6 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    border-bottom: var(--border);
    padding-bottom: var(--space-xs);
    color: var(--color-secondary);
}

/* Single issue display */
.single-issue-details {
    padding: var(--space-md);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.issue-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-top: var(--space-sm);
}

.issue-action-btn {
    border: var(--border);
    background-color: var(--color-surface);
    font-size: var(--font-size-xs);
    padding: var(--space-xs) var(--space-sm);
}

.issue-action-btn:hover {
    border-color: var(--color-primary);
}

/* -----------------------------
 * ANIMATIONS
 * -----------------------------*/
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        background-color: rgba(52, 152, 219, 0.15);
    }

    50% {
        background-color: rgba(52, 152, 219, 0.3);
    }

    100% {
        background-color: rgba(52, 152, 219, 0.15);
    }
}

/* -----------------------------
 * UTILITY CLASSES
 * -----------------------------*/
/* Cursors */
body.dragging * {
    cursor: grabbing !important;
}

/* -----------------------------
 * RESPONSIVE ADJUSTMENTS
 * -----------------------------*/
@media (max-width: 768px) {
    .log-content {
        grid-template-columns: 1fr;
    }

    .session-properties {
        grid-template-columns: 1fr;
    }

    .anomaly-kpi {
        grid-column: auto;
    }

    .connection-summary {
        flex-direction: column;
        align-items: flex-start;
    }

    .zoom-navigator {
        flex-direction: column;
    }

    .zoom-controls {
        margin-top: var(--space-sm);
        flex-wrap: wrap;
    }

    .sticky-event-popup {
        max-width: 90vw;
        left: 5vw !important;
        /* Override inline style */
    }

    .drop-zone {
        padding: var(--space-lg);
    }

    .drop-icon {
        width: 40px;
        height: 40px;
    }

    .info-panel {
        position: static;
        max-height: none;
    }
}

/* Dark mode support for future implementation */
@media (prefers-color-scheme: dark) {
    :root {
        /* This is just a placeholder for future dark mode implementation */
        /* The actual values would be set when dark mode is implemented */
    }
}