/* Stylesheet for IGC Flight Track Visualizer (Light Theme) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --color-bg-deep: #f1f5f9;       /* Slate 100 */
    --color-bg-panel: rgba(255, 255, 255, 0.85); /* Semi-transparent white */
    --color-bg-card: rgba(255, 255, 255, 0.9);
    --color-bg-card-hover: #ffffff;
    --color-bg-active: rgba(79, 70, 229, 0.08); /* Indigo light tint */
    
    --color-primary: #4f46e5;       /* Indigo 600 */
    --color-primary-hover: #3730a3; /* Indigo 800 */
    --color-primary-glow: rgba(79, 70, 229, 0.2);
    
    --color-secondary: #059669;     /* Emerald 600 */
    --color-secondary-glow: rgba(5, 150, 105, 0.15);
    
    --color-danger: #dc2626;        /* Rose Red 600 */
    
    --color-text-main: #0f172a;     /* Slate 900 */
    --color-text-muted: #475569;   /* Slate 600 */
    --color-text-dim: #94a3b8;     /* Slate 400 */
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-color-active: rgba(79, 70, 229, 0.3);
    
    --shadow-main: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 0 15px rgba(79, 70, 229, 0.12);
    
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --sidebar-width: 400px;
    --transition-speed: 0.25s;

    /* Chart specific styling inside CSS */
    --chart-grid: #e2e8f0;
    --color-tooltip-bg: rgba(15, 23, 42, 0.95);
    --color-tooltip-text: #ffffff;
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    height: 100vh;
    overflow: hidden;
    display: flex;
}

/* App Layout */
.app-container {
    display: flex;
    width: 100%;
    height: 100%;
    position: relative;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    height: 100%;
    background: var(--color-bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 10;
    box-shadow: 10px 0 30px rgba(15, 23, 42, 0.05);
    transition: transform var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.brand-icon {
    color: var(--color-primary);
    filter: drop-shadow(0 0 6px var(--color-primary-glow));
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--color-text-main) 30%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand span {
    font-size: 0.75rem;
    background: var(--color-primary);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
    color: white;
    font-weight: 600;
}

/* Main Scrollable Sidebar Content */
.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: filter var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1), opacity var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

/* Blur list and disable mouse interaction behind active detail panel */
.sidebar:has(.detail-panel.open) .sidebar-content {
    filter: blur(5px);
    opacity: 0.45;
    pointer-events: none;
}

/* Custom Scrollbars */
.sidebar-content::-webkit-scrollbar {
    width: 6px;
}
.sidebar-content::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar-content::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
}
.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.15);
}

/* File Upload Zone */
.upload-zone {
    border: 2px dashed rgba(15, 23, 42, 0.15);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.01);
    transition: all var(--transition-speed) ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.upload-zone:hover {
    border-color: var(--color-primary);
    background: rgba(79, 70, 229, 0.04);
    transform: translateY(-2px);
}

.upload-zone.dragover {
    border-color: var(--color-secondary);
    background: rgba(5, 150, 105, 0.06);
    box-shadow: 0 0 20px var(--color-secondary-glow);
    transform: scale(0.98);
}

.upload-icon {
    color: var(--color-text-muted);
    transition: color var(--transition-speed) ease;
}

.upload-zone:hover .upload-icon {
    color: var(--color-primary);
}

.upload-zone.dragover .upload-icon {
    color: var(--color-secondary);
}

.upload-zone h3 {
    font-size: 0.95rem;
    font-weight: 600;
}

.upload-zone p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.upload-actions {
    display: flex;
    gap: 0.5rem;
    width: 100%;
    margin-top: 0.25rem;
}

.btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--color-bg-card);
    color: var(--color-text-main);
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.02);
    transition: all 0.2s ease;
}

.btn:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-text-dim);
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px var(--color-primary-glow);
}

.btn-danger {
    background: var(--color-danger, #dc2626);
    border-color: var(--color-danger, #dc2626);
    color: white;
}

.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.2);
}

/* Processing Loader Overlay */
.loader-container {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow-main);
}

.loader-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 600;
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width 0.1s ease;
}

/* Filters Panel */
.filters-panel {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.02);
}

.filter-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    color: var(--color-text-muted);
}

.input-field {
    width: 100%;
    padding: 0.55rem 0.75rem 0.55rem 2.25rem;
    background: rgba(241, 245, 249, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--color-text-main);
    font-family: var(--font-ui);
    font-size: 0.85rem;
    outline: none;
    transition: all 0.2s ease;
}

.input-field:focus {
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 0 8px var(--color-primary-glow);
}

.range-slider-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.range-slider {
    width: 100%;
    height: 5px;
    border-radius: 3px;
    outline: none;
    background: rgba(0, 0, 0, 0.08);
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* Track List section */
.tracks-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 200px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-main);
}

.track-count-badge {
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.05);
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    color: var(--color-text-muted);
}

.track-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.no-tracks-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    border: 1px dashed rgba(0, 0, 0, 0.08);
    border-radius: 8px;
}

/* Track Card Component */
.track-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.85rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.01);
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.track-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--track-color, var(--color-primary));
}

.track-card:hover {
    background: var(--color-bg-card-hover);
    transform: translateX(3px);
    border-color: rgba(15, 23, 42, 0.15);
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.04);
}

.track-card.active {
    background: var(--color-bg-active);
    border-color: var(--border-color-active);
    box-shadow: var(--shadow-glow);
}

.track-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.track-card-title {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 240px;
}

.track-card-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.track-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.track-meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
}

.track-meta-item .metric {
    font-weight: 600;
    color: var(--color-text-main);
}

/* Detail Panel (Slide-up or Overlay inside Sidebar) */
.detail-panel {
    background: var(--color-bg-panel);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -10px 30px rgba(15, 23, 42, 0.06);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 85%;
    display: flex;
    flex-direction: column;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 15;
}

.detail-panel.open {
    transform: translateY(0);
}

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

.detail-title-group {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    max-width: 80%;
}

.detail-title {
    font-size: 1rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.detail-metadata-summary {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    padding: 0.6rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    align-items: center;
}

.detail-metadata-summary span {
    color: var(--color-text-main);
    font-weight: 500;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--color-text-main);
}

.detail-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.stat-box {
    background: rgba(0, 0, 0, 0.01);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.stat-box.highlight-box {
    background: rgba(79, 70, 229, 0.04);
    border-color: var(--border-color-active);
}

.stat-box.highlight-box #stat-xc-points {
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
}

.stat-value span {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 0.15rem;
}

/* Chart Container */
.chart-container-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chart-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.chart-box {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    height: 150px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

/* Flight Playback Instrument Panel (HUD style) */
.playback-controls {
    background: rgba(79, 70, 229, 0.03);
    border: 1px solid var(--border-color-active);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.hud-telemetry {
    display: flex;
    justify-content: space-around;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

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

.hud-label {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.hud-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.playback-slider-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.playback-time-display {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    min-width: 50px;
    color: var(--color-text-muted);
}

.playback-button-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.playback-btn-group {
    display: flex;
    gap: 0.5rem;
}

.btn-icon-only {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
}

.speed-badge-btn {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-color);
    cursor: pointer;
    color: var(--color-text-muted);
}

.speed-badge-btn:hover {
    color: var(--color-text-main);
    background: rgba(0, 0, 0, 0.06);
}

/* Map Section */
.map-container {
    flex: 1;
    height: 100%;
    position: relative;
}

#map {
    width: 100%;
    height: 100%;
}

/* MapLibre Popup Styling Custom Overrides (Light Theme) */
.maplibregl-popup-content {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color-active) !important;
    border-radius: 10px !important;
    color: var(--color-text-main) !important;
    box-shadow: var(--shadow-main) !important;
    padding: 1rem !important;
    font-family: var(--font-ui) !important;
}

.maplibregl-popup-anchor-top .maplibregl-popup-tip {
    border-bottom-color: rgba(255, 255, 255, 0.95) !important;
}
.maplibregl-popup-anchor-bottom .maplibregl-popup-tip {
    border-top-color: rgba(255, 255, 255, 0.95) !important;
}
.maplibregl-popup-anchor-left .maplibregl-popup-tip {
    border-right-color: rgba(255, 255, 255, 0.95) !important;
}
.maplibregl-popup-anchor-right .maplibregl-popup-tip {
    border-left-color: rgba(255, 255, 255, 0.95) !important;
}

.popup-info-window {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 180px;
}

.popup-title {
    font-weight: 700;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.25rem;
    margin-bottom: 0.15rem;
}

.popup-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
}

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

.popup-value {
    font-weight: 600;
    font-family: var(--font-mono);
}

.maplibregl-popup-close-button {
    color: var(--color-text-muted) !important;
    font-size: 1.1rem !important;
    padding: 0.25rem 0.5rem !important;
    outline: none !important;
}

.maplibregl-popup-close-button:hover {
    color: var(--color-text-main) !important;
    background: transparent !important;
}

/* Map Controls Custom Styling */
.maplibregl-ctrl-group {
    background: var(--color-bg-panel) !important;
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05) !important;
}

.maplibregl-ctrl-group button {
    background-color: transparent !important;
    color: var(--color-text-main) !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.maplibregl-ctrl-group button:last-child {
    border-bottom: none !important;
}

/* Toggle Sidebar button for Mobile */
.mobile-sidebar-toggle {
    display: none;
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 20;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--color-bg-panel);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    color: var(--color-text-main);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-main);
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
    .mobile-sidebar-toggle {
        display: flex;
    }
    
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        width: 320px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
}

/* Track Card Actions (Visibility toggle and delete buttons) */
.track-card-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.track-card-actions button {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: opacity 0.2s ease, color 0.2s ease;
}

.track-card-actions button svg {
    width: 14px;
    height: 14px;
    stroke-width: 2px;
}

.track-card .delete-btn,
.track-card .toggle-visibility-btn {
    opacity: 0;
}

/* If track is manually hidden, visibility icon remains permanently visible but semi-transparent */
.track-card .toggle-visibility-btn.user-hidden {
    opacity: 0.45;
}

.track-card:hover .delete-btn,
.track-card:hover .toggle-visibility-btn {
    opacity: 0.7;
}

.track-card:hover .delete-btn:hover {
    opacity: 1;
    color: var(--color-danger) !important;
}

.track-card:hover .toggle-visibility-btn:hover {
    opacity: 1;
    color: var(--color-primary) !important;
}

/* Theme Toggle Button styling */
.theme-toggle-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    color: var(--color-text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.theme-toggle-btn:hover {
    background-color: var(--border-color);
    color: var(--color-primary);
}

.theme-toggle-btn .theme-icon {
    width: 18px;
    height: 18px;
    display: block;
}

/* Dark Theme Variables Override */
body.dark-theme {
    --color-bg-deep: #0f172a;       /* Slate 900 */
    --color-bg-panel: rgba(30, 41, 59, 0.85); /* Slate 800 semi-transparent */
    --color-bg-card: rgba(30, 41, 59, 0.9);
    --color-bg-card-hover: #1e293b;
    --color-bg-active: rgba(129, 140, 248, 0.15); /* Indigo tint */
    
    --color-primary: #818cf8;       /* Indigo 400 */
    --color-primary-hover: #a5b4fc; /* Indigo 300 */
    --color-primary-glow: rgba(129, 140, 248, 0.3);
    
    --color-secondary: #34d399;     /* Emerald 400 */
    --color-secondary-glow: rgba(52, 211, 153, 0.2);
    
    --color-danger: #f87171;        /* Rose Red 400 */
    
    --color-text-main: #f8fafc;     /* Slate 50 */
    --color-text-muted: #cbd5e1;   /* Slate 300 */
    --color-text-dim: #64748b;     /* Slate 500 */
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-active: rgba(129, 140, 248, 0.4);
    
    --shadow-main: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 15px rgba(129, 140, 248, 0.2);
    
    --chart-grid: #334155;          /* Slate 700 */
    --color-tooltip-bg: rgba(15, 23, 42, 0.98);
    --color-tooltip-text: #f8fafc;
}

/* Modal / Update Dialog Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.4); /* Dark semi-transparent overlay */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal-overlay.open {
    opacity: 1;
}
.modal-dialog {
    background: var(--color-bg-card, #ffffff);
    border: 1px solid var(--border-color-active, rgba(79, 70, 229, 0.3));
    border-radius: 12px;
    box-shadow: var(--shadow-main, 0 20px 25px -5px rgba(0,0,0,0.1));
    padding: 1.75rem;
    max-width: 480px;
    width: 90%;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-overlay.open .modal-dialog {
    transform: scale(1);
}
.modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.modal-icon {
    color: var(--color-primary);
    width: 24px;
    height: 24px;
    filter: drop-shadow(0 0 4px var(--color-primary-glow));
}
.modal-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-main);
}
.modal-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
}
.btn-modal-close {
    min-width: 100px;
}