/*
 * Growth Explorer - Premium Data Visualizer Theme
 * Dark Mode Design System with Left Sidebar Control Layout
 */

:root {
    color-scheme: light;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-subtle: #e2e8f0;
    --border-highlight: #cbd5e1;
    --border-focus: #4f46e5;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --brand-blue: #0284c7;
    --accent-indigo: #4f46e5;
    --accent-teal: #0d9488;
    --accent-emerald: #059669;
    
    --glass-bg: rgba(255, 255, 255, 0.92);
    --glass-border: rgba(226, 232, 240, 0.8);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 25px -5px rgba(79, 70, 229, 0.08);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--brand-blue);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: #7dd3fc;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 10px 14px 20px;
}

/* ----------------------------------------------------
   1. TOP NAVIGATION
---------------------------------------------------- */
.site-header {
    position: sticky;
    top: 6px;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 6px 14px;
    margin-bottom: 10px;
    box-shadow: var(--shadow-subtle);
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: -0.3px;
    white-space: nowrap;
}

.brand-icon {
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, #6366f1, #38bdf8);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 13px;
}

.category-nav {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 2px 0;
    flex-wrap: wrap;
}
.category-nav::-webkit-scrollbar {
    display: none;
}

@media (max-width: 1024px) {
    .category-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
    }
}

.category-nav a {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.category-nav a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--border-highlight);
}

.category-nav a.active {
    color: #fff;
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

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

.nav-dropdown-btn {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-dropdown-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--border-highlight);
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 6px;
    background: #ffffff;
    border: 1px solid var(--border-highlight);
    border-radius: 12px;
    min-width: 180px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    z-index: 1000;
    overflow: hidden;
}

/* Dropdown opens on hover or via JS .open class (click-based) */
.nav-dropdown:hover .nav-dropdown-content,
.nav-dropdown-content.open {
    display: flex !important;
    flex-direction: column !important;
}

/* Active state on button when dropdown is open or hovered */
.nav-dropdown:hover .nav-dropdown-btn,
.nav-dropdown-btn.open {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--border-highlight);
}

.nav-dropdown-group-title {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 9.5px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--brand-blue);
    padding: 7px 14px 3px 14px;
    background: #f8fafc;
    border-bottom: 1px solid var(--border-subtle);
}

.nav-dropdown-content a {
    border: none;
    border-radius: 0;
    background: transparent;
    padding: 7px 14px;
    width: 100%;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    transition: background 0.15s ease, color 0.15s ease;
}

.nav-dropdown-content a:hover {
    background: #f1f5f9;
    color: var(--text-primary);
}

.category-nav a[aria-current="page"] {
    color: #fff;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(56, 189, 248, 0.25));
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}

/* ----------------------------------------------------
   2. COMPACT HERO / HEADER ROW
---------------------------------------------------- */
.hero-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.intro h1 {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 800;
    letter-spacing: -0.4px;
    color: var(--text-primary);
    margin: 0;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 11.5px;
    margin-top: 1px;
}

/* KPI Cards */
.visitor-metrics {
    display: flex;
    gap: 8px;
}

.visitor-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 6px 12px;
    min-width: 95px;
}

.visitor-label {
    color: var(--text-muted);
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.live-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.visitor-value {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 800;
    margin-top: 1px;
}

/* ----------------------------------------------------
   3. 3-COLUMN MAIN LAYOUT: CONTROLS (LEFT) - CHART (CENTER) - RANKINGS (RIGHT)
---------------------------------------------------- */
.tool-layout-3col {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr) 240px;
    gap: 10px;
    align-items: stretch;
    margin-bottom: 12px;
}

.control-panel-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: opacity 0.2s ease;
}

.control-panel-sidebar.disabled-panel {
    opacity: 0.55;
    pointer-events: none;
    user-select: none;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
}

.panel-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-label {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Custom Country Multi-Select Component */
.country-multiselect {
    position: relative;
}

.selected-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 6px 8px;
    min-height: 38px;
    cursor: pointer;
    align-items: center;
}

.selected-chips:hover {
    border-color: var(--border-highlight);
}

.country-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #4f46e5 !important;
    border: 1px solid #4338ca !important;
    color: #ffffff !important;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 700;
}

.country-chip span {
    color: #ffffff !important;
}

.country-chip .chip-remove {
    cursor: pointer;
    color: #a5b4fc !important;
    font-size: 13px;
    font-weight: 800;
    margin-left: 2px;
}
.country-chip .chip-remove:hover {
    color: #dc2626;
}

.country-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 150;
    background: #ffffff;
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 8px;
    display: none;
}

.country-dropdown-menu.active {
    display: block;
}

.country-search-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    padding: 6px 8px;
    color: var(--text-primary);
    font-size: 11px;
    margin-bottom: 6px;
}

.country-options-list {
    max-height: 180px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.country-option-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    color: var(--text-secondary);
}

.country-option-item:hover {
    background: #f1f5f9;
    color: var(--text-primary);
}

.country-option-item.selected {
    color: var(--brand-blue);
    font-weight: 700;
}

/* Select & Inputs */
select, input[type="number"] {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 7px 10px;
    font-size: 12px;
    font-weight: 500;
    outline: none;
    width: 100%;
}

select:focus, input:focus {
    border-color: var(--accent-indigo);
}

.time-range-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.time-range-group input {
    width: 100%;
    text-align: center;
}

/* Play Buttons & Loading Spinner */
.sidebar-action-btn {
    margin-top: 4px;
    width: 100%;
}

.btn-spinner {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #ffffff;
    animation: btnSpin 0.7s linear infinite;
    margin-right: 4px;
}

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

/* CENTER COLUMN: MAIN CHART VISUALIZATION */
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 14px;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    position: relative;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.chart-indicator-name {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-primary);
}

.chart-subtitle {
    font-size: 11px;
    color: var(--text-muted);
}

.year-badge-floating {
    background: #f1f5f9;
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-md);
    padding: 4px 12px;
    text-align: right;
}

.year-badge-number {
    font-size: 20px;
    font-weight: 900;
    line-height: 1;
    color: var(--brand-blue);
}

.year-badge-label {
    font-size: 8px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
}

.canvas-container {
    position: relative;
    width: 100%;
    height: 315px;
    max-height: 315px;
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    min-height: 137px;
    cursor: pointer;
}

canvas#chart {
    width: 100%;
    height: 100%;
    min-height: 137px;
    max-height: 315px;
    display: block;
}

/* Playback Bar */
.playback-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
}

.playback-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-icon:hover:not(:disabled) {
    background: #f1f5f9;
    border-color: var(--border-highlight);
}

.btn-icon.btn-primary {
    background: linear-gradient(135deg, #4f46e5, #3b82f6);
    border: none;
    color: #fff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.btn-icon.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #4338ca, #2563eb);
    color: #ffffff;
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.45);
}

.btn-icon:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.speed-selector {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 2px;
}

.speed-opt {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 3px 6px;
    font-size: 10px;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
}

.speed-opt.active {
    background: var(--accent-indigo);
    color: #fff;
}

/* Timeline Slider */
.timeline-slider-container {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-year-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
}

input[type="range"].timeline-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 5px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    cursor: pointer;
}

input[type="range"].timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #6366f1;
    border: 2px solid #fff;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
    cursor: pointer;
}

/* Stats & Legend */
.stats-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.stat-chip {
    background: #f8fafc;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 6px 10px;
}

.stat-chip-name {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-chip-val {
    font-size: 14px;
    font-weight: 800;
    color: var(--text-primary);
    margin-top: 1px;
}

.legend-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 600;
}

.legend-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.status-bar {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* RIGHT COLUMN: RANKINGS PANEL */
.side-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 14px;
    box-shadow: var(--shadow-subtle);
}

.side-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.side-panel-title {
    font-size: 13px;
    font-weight: 800;
    color: var(--text-primary);
}

.ranking-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ranking-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #f8fafc;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 3px 6px;
}

.rank-badge {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 800;
    color: var(--text-secondary);
}

.rank-badge.rank-1 { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.4); }
.rank-badge.rank-2 { background: rgba(148, 163, 184, 0.2); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.4); }
.rank-badge.rank-3 { background: rgba(180, 83, 9, 0.2); color: #f97316; border: 1px solid rgba(180, 83, 9, 0.4); }

.ranking-country {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 11px;
    flex: 1;
    margin: 0 4px;
}

.ranking-val {
    font-weight: 800;
    font-size: 11px;
    color: var(--brand-blue);
}

.side-panel-footer {
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.side-panel-footer a {
    font-size: 12px;
    font-weight: 700;
    color: var(--brand-blue);
}

/* Insight Banner */
.insight-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(56, 189, 248, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    margin-top: 10px;
}

.insight-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: #a5b4fc;
}

.insight-text {
    font-size: 11.5px;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Summary Grid */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 6px;
    margin-top: 6px;
}

.summary-card {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
}

.summary-name {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
}

.summary-value {
    font-size: 14px;
    font-weight: 800;
    color: var(--brand-blue);
}

.summary-meta {
    font-size: 9.5px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Data Key Points Grid */
.data-key-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
    margin: 14px 0;
}

.data-key-card {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius-md);
    padding: 10px 12px;
    text-align: center;
}

.data-key-val {
    font-size: 15px;
    font-weight: 800;
    color: var(--brand-blue);
}

.data-key-label {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
    font-weight: 500;
}

.related-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.related-link-chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--brand-blue);
    text-decoration: none;
    transition: all 0.15s ease;
}

.related-link-chip:hover {
    background: #e2e8f0;
    border-color: var(--brand-blue);
}

/* ----------------------------------------------------
   4. SECTIONS & FOOTER
---------------------------------------------------- */
.content-section:empty,
div:empty {
    display: none !important;
}

.content-section {
    margin-top: 8px;
    padding: 10px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.content-section h2 {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.category-grid, .comparison-grid, .more-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.category-card, .comparison-card {
    background: #f8fafc;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px;
    color: var(--text-secondary);
}

.category-card:hover, .comparison-card:hover {
    background: #f1f5f9;
    border-color: var(--border-highlight);
    text-decoration: none;
}

.category-card strong, .comparison-card strong {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
    display: block;
}

.footer {
    margin-top: 28px;
    padding: 20px 0 16px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 11px;
    text-align: center;
    line-height: 1.8;
}

.footer-copyright {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 6px;
    font-size: 11px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.footer-links a:hover {
    color: var(--brand-blue);
}

/* ----------------------------------------------------
   6. SNAPSHOT MODAL & STYLING
---------------------------------------------------- */
.snapshot-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    background: rgba(6, 9, 19, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.snapshot-modal-dialog {
    background: #ffffff;
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 920px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    overflow: hidden;
}

.snapshot-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255,255,255,0.02);
}

.snapshot-modal-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-primary);
}

.snapshot-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
}
.snapshot-close-btn:hover { color: #fff; }

.snapshot-modal-body {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 16px;
    padding: 18px;
    overflow-y: auto;
}

.snapshot-controls-column {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.snapshot-option-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.snapshot-option-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.snapshot-btn-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.snapshot-mode-btn, .snapshot-size-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    border-radius: 6px;
    padding: 7px 10px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: all 0.15s ease;
}

.snapshot-mode-btn.active, .snapshot-size-btn.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(56, 189, 248, 0.3));
    border-color: #6366f1;
    color: #fff;
}

.snapshot-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 6px;
}

.snapshot-preview-column {
    display: flex;
    flex-direction: column;
    background: #f8fafc;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px;
}

.snapshot-preview-header {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.snapshot-preview-box {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.snapshot-preview-img {
    max-width: 100%;
    max-height: 520px;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

@media (max-width: 1024px) {
    .tool-layout-3col {
        grid-template-columns: 1fr;
    }
    .control-panel-sidebar {
        order: 1;
    }
    .chart-card {
        order: 2;
    }
    .side-panel {
        order: 3;
    }
}

@media (max-width: 768px) {
    .snapshot-modal-body {
        grid-template-columns: 1fr;
    }
    .canvas-container {
        height: 260px;
        max-height: 260px;
    }
}