/* CircuitCAD - Main Stylesheet */

/* Dark theme (default) */
:root {
    --bg-dark: #0d1117;
    --bg-darker: #0a0c10;
    --bg-medium: #161b22;
    --bg-light: #21262d;
    --bg-panel: #161b22;
    --border: #30363d;
    --text: #c9d1d9;
    --text-dim: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #4a90e2;
    --wire-color: #ffffff;
    --bus-color: #00aaff;
    --junction-color: #000000;
    --grid-color: #2d333b;
    --grid-line: #3d444b;
    --canvas-bg: #1a1a1a;
    --symbol-color: #ffcc00;
    --comment-indicator: #ffa500;
    --preview-color: #00ff00;
    --preview-highlight: rgba(0, 255, 0, 0.3);
    --selection-rect-stroke: #58a6ff;
    --selection-rect-fill: rgba(88, 166, 255, 0.15);
    --shape-default-stroke: #00ccff;
    --ground-color: #00ff00;
    /* Power/ground wire colors */
    --power-color: #ff0000;
    --power-wire-color: #ffffff;
    /* Annotation backgrounds */
    --annotation-bg: #1a1a2e;
    --annotation-bg-alt: #0a0a15;
    --annotation-bg-violation: #2a1515;
    --annotation-bg-i2c: #0a1520;
    /* Simulation / analysis colors */
    --sim-high: #00ff44;
    --sim-low: #0088ff;
    --sim-weak-high: #88ffaa;
    --sim-weak-low: #88aaff;
    --sim-floating: #666666;
    --sim-conflict: #ff0000;
    --sim-undefined: #ffaa00;
    --sim-voltage: #00ff88;
    --sim-current: #ffaa00;
    --sim-overcurrent: #ff4444;
    --sim-specs: #88aaff;
    --sim-time-constant: #ff9900;
    --sim-i2c: #00bfff;
    --sim-port-ref: #00bfff;
    /* Pin state colors */
    --pin-floating: #888888;
    --pin-driven-high: #00ff00;
    --pin-driven-low: #ff6600;
    /* Symbol edit mode */
    --symbol-edit-color: #ffcc00;
    --symbol-edit-pin: #ffa726;
    /* Component text labels */
    --ref-text-color: #58a6ff;
    --value-text-color: #8b949e;
    --part-number-color: #ff9800;
    --nopop-bg: #ff69b4;
    --data-status-partial: #ffaa00;
    --data-status-logic: #ffcc00;
    --data-status-minimal: #ff8800;
}

/* Light theme */
[data-theme="light"] {
    --bg-dark: #f6f8fa;
    --bg-darker: #e8eaed;
    --bg-medium: #ffffff;
    --bg-light: #f0f2f4;
    --bg-panel: #ffffff;
    --border: #d1d5db;
    --text: #24292f;
    --text-dim: #57606a;
    --accent: #0969da;
    --accent-hover: #0550ae;
    /* Canvas drawing colors - black for visibility */
    --wire-color: #1a1a1a;
    --bus-color: #1a1a1a;
    --junction-color: #1a1a1a;
    --grid-color: #e0e0e0;
    --grid-line: #c8c8c8;
    --canvas-bg: #fafafa;
    --symbol-color: #1a1a1a;
    --comment-indicator: #1a1a1a;
    --preview-color: #0066ff;
    --preview-highlight: rgba(0, 102, 255, 0.3);
    --selection-rect-stroke: #0066ff;
    --selection-rect-fill: rgba(0, 102, 255, 0.15);
    --shape-default-stroke: #0066cc;
    --ground-color: #1a1a1a;
    /* Power/ground wire colors */
    --power-color: #1a1a1a;
    --power-wire-color: #1a1a1a;
    /* Component text labels - all black for readability */
    --ref-text-color: #1a1a1a;
    --value-text-color: #1a1a1a;
    --part-number-color: #1a1a1a;
    --nopop-bg: #ff69b4;
    --data-status-partial: #cc7700;
    --data-status-logic: #b38600;
    --data-status-minimal: #aa5500;
    /* Annotation backgrounds */
    --annotation-bg: rgba(0, 0, 0, 0.06);
    --annotation-bg-alt: rgba(0, 0, 0, 0.04);
    --annotation-bg-violation: rgba(255, 68, 68, 0.08);
    --annotation-bg-i2c: rgba(0, 102, 204, 0.06);
    /* Simulation / analysis colors */
    --sim-high: #008a22;
    --sim-low: #0055cc;
    --sim-weak-high: #2d8a4e;
    --sim-weak-low: #3366aa;
    --sim-floating: #888888;
    --sim-conflict: #cc0000;
    --sim-undefined: #cc7700;
    --sim-voltage: #007744;
    --sim-current: #cc7700;
    --sim-overcurrent: #cc0000;
    --sim-specs: #3355aa;
    --sim-time-constant: #cc6600;
    --sim-i2c: #0077aa;
    --sim-port-ref: #0077aa;
    /* Pin state colors */
    --pin-floating: #888888;
    --pin-driven-high: #008800;
    --pin-driven-low: #cc4400;
    /* Symbol edit mode */
    --symbol-edit-color: #b38600;
    --symbol-edit-pin: #cc7700;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg-dark); color: var(--text); overflow: hidden; height: 100vh; }

/* Allow text selection in inputs, textareas, modals, and menus */
input, textarea, .modal, .modal-content, .menu-content, .properties-panel, .sim-warning-item, .sim-net-item, .net-loading-row {
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

/* Main Layout */
.app { display: flex; flex-direction: column; height: 100vh; }

/* Header / Menu Bar */
.header {
    height: 36px;
    background: var(--bg-medium);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 8px;
    gap: 0;
}
.header .logo {
    font-weight: 600;
    color: var(--accent);
    font-size: 14px;
    padding: 0 12px 0 4px;
    margin-right: 4px;
    border-right: 1px solid var(--border);
}
.header .back-link {
    color: var(--text-dim);
    font-size: 12px;
    padding: 4px 10px;
    margin-right: 8px;
    text-decoration: none;
    border-radius: 4px;
    background: rgba(255,255,255,0.05);
    transition: background 0.15s, color 0.15s;
}
.header .back-link:hover {
    background: rgba(88,166,255,0.15);
    color: var(--accent);
}

/* Menu Bar */
.menu-bar {
    display: flex;
    align-items: center;
    height: 100%;
}
.menu-dropdown {
    position: relative;
    height: 100%;
}
.menu-trigger {
    padding: 0 12px;
    height: 100%;
    display: flex;
    align-items: center;
    font-size: 13px;
    color: var(--text-dim);
    cursor: pointer;
    border: none;
    background: none;
    transition: background 0.15s, color 0.15s;
}
.menu-trigger:hover,
.menu-dropdown:hover .menu-trigger,
.menu-dropdown.open .menu-trigger {
    background: var(--bg-light);
    color: var(--text);
}
.menu-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: #1e1e2e;
    border: 1px solid var(--border);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    padding: 4px 0;
    z-index: 1000;
}

/* Quick action buttons in menu bar */
.menu-quick-btn {
    padding: 0 10px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--text-dim);
    cursor: pointer;
    border: none;
    background: none;
    transition: background 0.15s, color 0.15s;
}
.menu-quick-btn:hover {
    background: var(--bg-light);
    color: var(--text);
}
.menu-quick-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}
.menu-separator {
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 4px;
}
.menu-dropdown:hover .menu-content,
.menu-dropdown.open .menu-content {
    display: block;
}
.menu-item {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.1s;
}
.menu-item:hover {
    background: var(--accent);
    color: #fff;
}
.menu-item .shortcut {
    margin-left: auto;
    font-size: 11px;
    color: var(--text-dim);
    opacity: 0.7;
}
.menu-item:hover .shortcut {
    color: rgba(255,255,255,0.7);
}
.menu-item.disabled {
    opacity: 0.4;
    pointer-events: none;
}
.menu-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 8px;
}
.menu-section-header {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 6px 12px 4px;
    letter-spacing: 0.5px;
}
.menu-item svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

/* Filename display */
.filename-display {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    margin-left: 8px;
    background: var(--bg-dark);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-dim);
    max-width: 400px;
    border: 1px solid var(--border);
}
.filename-display #current-filename {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.filename-display #dirty-indicator {
    color: #f0883e;
    font-size: 10px;
}

/* Header right section */
.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 16px;
    padding-right: 4px;
}
.header-stat {
    font-size: 11px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 4px;
}
.header-stat span {
    color: var(--text);
    font-weight: 500;
}
.header-right a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}
.header-right a:hover {
    background: var(--bg-light);
    color: var(--text);
}
.header-right .user-email {
    font-size: 11px;
    color: var(--accent);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.header-right .tools-link {
    color: #8b949e !important;
    border: 1px solid #30363d;
}
.header-right .tools-link:hover {
    color: var(--text) !important;
    border-color: #484f58;
}
.header-right .logout-link {
    color: #f85149 !important;
}
.header-right .login-link {
    color: var(--accent) !important;
}

/* Main Content Area */
.main-content { display: flex; flex: 1; overflow: hidden; }

/* Toolbar (left) */
.toolbar {
    width: 48px;
    background: var(--bg-medium);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 8px 4px;
    gap: 4px;
}
.tool-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-dim);
    transition: all 0.15s;
}
.tool-btn:hover { background: var(--bg-light); color: var(--text); }
.tool-btn.active { background: var(--accent); color: #fff; }
.tool-btn svg { width: 20px; height: 20px; }
.tool-separator { height: 1px; background: var(--border); margin: 8px 4px; }

/* Toggle buttons (auto-analyze, auto-delete) - different style from tool selection */
.tool-btn.toggle-btn { background: rgba(248, 81, 73, 0.15); color: #f85149; border: 1px solid #f85149; }
.tool-btn.toggle-btn:hover { background: rgba(248, 81, 73, 0.25); }
.tool-btn.toggle-btn.active { background: rgba(46, 160, 67, 0.2); color: #3fb950; border: 1px solid #3fb950; }
.tool-btn.toggle-btn.active:hover { background: rgba(46, 160, 67, 0.3); }

/* Tall tool button (for voltage divider, etc.) */
.tool-btn.tool-btn-tall { height: 60px; }
.tool-btn.tool-btn-tall svg { width: 22px; height: 48px; }

/* Secondary toolbar (extended components) */
.toolbar-secondary {
    border-left: none;
    border-right: 1px solid var(--border);
    background: var(--bg-secondary);
    min-width: 80px;
    padding: 8px 6px;
}

.toolbar-secondary .tool-btn {
    width: 64px;
    height: 56px;
}

.toolbar-secondary .tool-btn svg {
    width: 48px;
    height: 44px;
}

/* Design Info Bar (horizontal row above canvas) */
.design-info-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 4px 12px;
    background: var(--bg-medium);
    border-bottom: 1px solid var(--border);
    font-size: 11px;
    flex-shrink: 0;
}
.design-info-bar .design-info-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.design-info-bar .design-info-item label {
    color: var(--text-dim);
    font-size: 10px;
    white-space: nowrap;
}
.design-info-bar .design-info-item input,
.design-info-bar .design-info-item select {
    padding: 3px 6px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text);
    font-size: 11px;
    min-width: 80px;
}
.design-info-bar .design-info-item input:focus,
.design-info-bar .design-info-item select:focus {
    outline: none;
    border-color: var(--accent);
}
.design-info-bar .design-info-item input[type="text"] {
    width: 240px;
}
#design-author {
    width: 168px !important;
}
#design-revision {
    width: 25px !important;
}
.design-info-bar .design-info-item select {
    min-width: 50px;
    width: auto;
}

/* Canvas Area */
.canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--canvas-bg);
    /* Prevent browser default behaviors */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    touch-action: none;
}
#schematic-canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: default;
    /* Prevent native drag-and-drop */
    -webkit-user-drag: none;
    user-drag: none;
}
/* Tool-specific cursors */
.canvas-container.tool-wire #schematic-canvas,
.canvas-container.tool-bus #schematic-canvas { cursor: crosshair; }
.canvas-container.tool-select #schematic-canvas { cursor: default; }
.canvas-container.panning { cursor: grab; }
.canvas-container.panning:active { cursor: grabbing; }
.canvas-container.space-pan-ready { cursor: grab; }
.canvas-container.space-pan-ready:active { cursor: grabbing; }
.canvas-container.dragging #schematic-canvas { cursor: move; }

/* Canvas Area (contains canvas and page tabs) */
.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.canvas-area .canvas-container {
    flex: 1;
}

/* Page Tabs */
.page-tabs-container {
    height: 32px;
    background: var(--bg-medium);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 8px;
    gap: 4px;
}
.page-tabs-nav {
    display: flex;
    align-items: center;
    gap: 2px;
}
.page-tabs-nav-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-dim);
    font-size: 12px;
    transition: all 0.15s;
}
.page-tabs-nav-btn:hover:not(.disabled) {
    background: var(--bg-light);
    color: var(--text);
}
.page-tabs-nav-btn.disabled {
    opacity: 0.3;
    cursor: default;
}
.page-tabs {
    display: flex;
    gap: 4px;
    overflow: hidden;
    flex: 1;
}
.page-tab {
    padding: 6px 12px;
    font-size: 11px;
    color: var(--text-dim);
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px 4px 0 0;
    cursor: pointer;
    white-space: nowrap;
    max-width: 120px;
    min-width: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.15s;
}
.page-tab:hover {
    background: var(--bg-light);
    color: var(--text);
}
.page-tab.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.page-tab.add-page {
    padding: 6px 10px;
    font-weight: bold;
    font-size: 14px;
    background: transparent;
    border: 1px dashed var(--border);
    min-width: 32px;
    max-width: 32px;
}
.page-tab.add-page:hover {
    background: var(--bg-light);
    border-style: solid;
}
.page-tabs-info {
    font-size: 10px;
    color: var(--text-dim);
    margin-left: 8px;
    white-space: nowrap;
}

/* Properties Panel (right) */
.properties-panel {
    width: 280px;
    background: var(--bg-medium);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.panel-header {
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
}
.panel-header .ai-symbol-btn {
    background: transparent;
    border: 1px solid #555;
    color: #4a9eff;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s;
}
.panel-header .ai-symbol-btn:hover {
    background: rgba(74, 158, 255, 0.1);
    border-color: #4a9eff;
}
.panel-content { padding: 12px 16px; flex: 1; overflow-y: auto; }
.prop-group { margin-bottom: 16px; }
.prop-group label { display: block; font-size: 11px; color: var(--text-dim); margin-bottom: 4px; }
.prop-group input, .prop-group select {
    width: 100%;
    padding: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 13px;
}
.prop-group input:focus, .prop-group select:focus { outline: none; border-color: var(--accent); }

/* Power Sequencing Panel (in Properties panel) */
.power-sequence-panel .power-rails-table {
    font-size: 11px;
}
.btn-tiny {
    padding: 2px 8px;
    font-size: 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}
.btn-tiny:hover {
    opacity: 0.9;
}

/* Modern Modal Styles */
.modern-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.modern-modal-overlay.visible {
    opacity: 1;
}
.modern-modal {
    background: var(--bg-medium);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.2s ease;
}
.modern-modal-overlay.visible .modern-modal {
    transform: scale(1) translateY(0);
}
.modern-modal-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}
.modern-modal-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.modern-modal-title {
    flex: 1;
}
.modern-modal-title h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text);
}
.modern-modal-title p {
    font-size: 13px;
    color: var(--text-dim);
    margin: 4px 0 0;
}
.modern-modal-close {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.modern-modal-close:hover {
    background: var(--bg-light);
    color: var(--text);
}
.modern-modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}
.modern-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-dark);
}

/* Modern Buttons */
.modern-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    border: none;
}
.modern-btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}
.modern-btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    transform: translateY(-1px);
}
.modern-btn-secondary {
    background: var(--bg-light);
    color: var(--text);
    border: 1px solid var(--border);
}
.modern-btn-secondary:hover {
    background: var(--bg-medium);
    border-color: var(--text-dim);
}
.modern-btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}
.modern-btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    transform: translateY(-1px);
}

/* Confirm Dialog */
.confirm-dialog {
    width: 420px;
}
.confirm-dialog-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.confirm-dialog-icon.warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}
.confirm-dialog-icon.danger {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}
.confirm-dialog-icon.info {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}
.confirm-dialog-icon svg {
    width: 28px;
    height: 28px;
}
.confirm-dialog-content {
    text-align: center;
    padding: 24px 24px 0;
}
.confirm-dialog-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 8px;
}
.confirm-dialog-content p {
    font-size: 14px;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.5;
}
.confirm-dialog-actions {
    display: flex;
    gap: 12px;
    padding: 24px;
    justify-content: center;
}
.confirm-dialog-actions .modern-btn {
    min-width: 100px;
    justify-content: center;
}

/* Modern Table */
.modern-table {
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}
.modern-table-header {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-dark);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.modern-table-body {
    max-height: 200px;
    overflow-y: auto;
}
.modern-table-row {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    align-items: center;
    border-bottom: 1px solid var(--border);
    transition: background 0.1s;
}
.modern-table-row:last-child {
    border-bottom: none;
}
.modern-table-row:hover {
    background: rgba(255, 255, 255, 0.03);
}
.rail-seq-num {
    width: 40px;
    color: var(--text-dim);
    font-size: 12px;
}
.rail-name-cell {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.rail-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.rail-voltage-cell {
    width: 70px;
    text-align: center;
    color: var(--accent);
    font-size: 13px;
}
.rail-delay-cell {
    width: 90px;
    text-align: center;
}
.rail-enabled-cell {
    width: 60px;
    display: flex;
    justify-content: center;
}

/* Modern Input */
.modern-input {
    width: 60px;
    padding: 6px 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
    text-align: center;
    transition: border-color 0.15s;
}
.modern-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Modern Toggle */
.modern-toggle {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
}
.modern-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}
.modern-toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-dark);
    border-radius: 11px;
    transition: 0.2s;
    border: 1px solid var(--border);
}
.modern-toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background: white;
    border-radius: 50%;
    transition: 0.2s;
}
.modern-toggle input:checked + .modern-toggle-slider {
    background: #10b981;
    border-color: #10b981;
}
.modern-toggle input:checked + .modern-toggle-slider:before {
    transform: translateX(18px);
}

/* Modern Section */
.modern-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.modern-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 12px;
}

/* Modern Timeline */
.modern-timeline {
    background: var(--bg-dark);
    border-radius: 10px;
    padding: 16px;
}
.modern-timeline-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}
.modern-timeline-row:last-child {
    margin-bottom: 0;
}
.timeline-order {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-dim);
}
.timeline-label {
    width: 60px;
    font-size: 12px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.timeline-bar-container {
    flex: 1;
    height: 20px;
    background: var(--bg-medium);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}
.timeline-bar-bg {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(90deg, transparent, transparent 10px, rgba(255,255,255,0.03) 10px, rgba(255,255,255,0.03) 20px);
}
.timeline-bar-fill {
    position: absolute;
    top: 2px;
    bottom: 2px;
    border-radius: 8px;
}
.timeline-marker {
    position: absolute;
    top: 4px;
    bottom: 4px;
    width: 3px;
    border-radius: 2px;
    transform: translateX(-50%);
}
.timeline-value {
    width: 45px;
    text-align: right;
    font-size: 11px;
    color: var(--text-dim);
}

/* Modern Empty State */
.modern-empty-state {
    text-align: center;
    padding: 40px 20px;
}
.modern-empty-state p {
    font-size: 16px;
    font-weight: 500;
    margin: 16px 0 8px;
    color: var(--text);
}
.modern-empty-state span {
    font-size: 13px;
    color: var(--text-dim);
}

/* Modern Success State */
.modern-success-state {
    text-align: center;
    padding: 32px 20px;
}
.modern-success-state h3 {
    font-size: 18px;
    margin: 16px 0 8px;
    color: #10b981;
}
.modern-success-state p {
    font-size: 13px;
    color: var(--text-dim);
}

/* Modern Issues List */
.modern-issues-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.modern-issue-card {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 10px;
}
.issue-icon {
    flex-shrink: 0;
    padding-top: 2px;
}
.issue-content {
    flex: 1;
}
.issue-type {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.issue-message {
    font-size: 13px;
    color: var(--text);
    margin-top: 4px;
    line-height: 1.5;
}
.issue-component {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 6px;
}

/* Modern Toast */
.modern-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--bg-medium);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 10001;
    opacity: 0;
    transition: all 0.3s ease;
}
.modern-toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}
.toast-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Component Library Panel */
.library-panel {
    width: 290px;
    background: var(--bg-medium);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.library-search {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}
.library-search input {
    width: 100%;
    padding: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 12px;
}
.library-categories { flex: 1; overflow-y: auto; }
.lib-category {
    border-bottom: 1px solid var(--border);
}
.lib-category-header {
    padding: 10px 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}
.lib-category-header:hover { background: var(--bg-light); }
.lib-category-header svg { width: 12px; height: 12px; transition: transform 0.2s; }
.lib-category.expanded .lib-category-header svg { transform: rotate(90deg); }
.lib-items { display: none; padding: 4px 8px 8px 8px; }
.lib-category.expanded .lib-items { display: block; }
.lib-item {
    padding: 8px 12px;
    font-size: 12px;
    color: var(--text-dim);
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s;
}
.lib-item:hover { background: var(--accent); color: #fff; }
.lib-item:active { transform: scale(0.98); }
.lib-item.dragging { opacity: 0.5; }

/* Status Bar */
.status-bar {
    height: 24px;
    background: var(--bg-medium);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-size: 11px;
    color: var(--text-dim);
    gap: 20px;
}
.status-item { display: flex; align-items: center; gap: 4px; }

/* Context Menu */
.context-menu {
    position: fixed;
    background: var(--bg-medium);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px;
    min-width: 160px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    z-index: 1000;
    display: none;
}
.context-menu.visible { display: block; }
.context-menu-item {
    padding: 8px 12px;
    font-size: 13px;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.context-menu-item:hover { background: var(--bg-light); }
.context-menu-item.danger { color: #f85149; }
.context-menu-separator { height: 1px; background: var(--border); margin: 4px 0; }
.context-menu-shape-item { display: none; }
.context-menu-wire-item { display: none; }
.context-menu-bus-type-item { display: none; }
.context-menu-output-state-item { display: none; }

/* Route Optimization Overlay */
.optimize-overlay {
    pointer-events: none;
}
.optimize-original-wire {
    stroke: #ff6b6b;
    stroke-width: 3;
    stroke-opacity: 0.4;
    stroke-dasharray: 5,5;
}
.optimize-path-glow {
    stroke: #00ffff;
    stroke-width: 8;
    stroke-opacity: 0.3;
    stroke-linecap: round;
}
.optimize-path-line {
    stroke: #00ffff;
    stroke-width: 3;
    stroke-linecap: round;
}
.optimize-endpoint {
    fill: #00ff88;
    fill-opacity: 0.8;
    stroke: #ffffff;
    stroke-width: 2;
}
.optimize-improvement-label {
    fill: #ffffff;
    font-size: 12px;
    font-weight: bold;
    font-family: system-ui, sans-serif;
}

/* Route Optimization Dialog */
.optimize-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10000;
    background: var(--bg-primary, #1a1a2e);
    border: 1px solid var(--border, #333);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    min-width: 300px;
}
.optimize-dialog-content {
    padding: 20px;
}
.optimize-dialog h3 {
    margin: 0 0 16px 0;
    color: var(--text-primary, #ffffff);
    font-size: 16px;
    font-weight: 600;
}
.optimize-stats {
    margin-bottom: 20px;
    padding: 12px;
    background: var(--bg-secondary, #0f0f1a);
    border-radius: 6px;
}
.optimize-stats p {
    margin: 4px 0;
    color: var(--text-secondary, #aaa);
    font-size: 13px;
}
.optimize-stats .improvement {
    color: #00cc66;
    font-weight: 600;
}
.optimize-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}
.optimize-actions .btn-primary {
    background: #00cc66;
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
}
.optimize-actions .btn-primary:hover {
    background: #00aa55;
}
.optimize-actions .btn-secondary {
    background: transparent;
    color: var(--text-secondary, #aaa);
    border: 1px solid var(--border, #333);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
}
.optimize-actions .btn-secondary:hover {
    background: var(--bg-light, #2a2a3e);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.modal-overlay.visible { display: flex; }
.modal {
    background: var(--bg-medium);
    border: 1px solid var(--border);
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
}
.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-header h2 { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 20px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #5a88ff; }
.btn-secondary { background: var(--bg-light); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-medium); }
.modal-close:hover { color: var(--text); }

/* Side Panel (right-side drawer) */
.side-panel-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.2);
    display: none;
    z-index: 2000;
}
.side-panel-overlay.visible { display: block; }
.side-panel {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 320px;
    background: var(--bg-medium);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 20px rgba(0,0,0,0.3);
}
.side-panel.right { right: 0; }
.side-panel-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.side-panel-header h2 { font-size: 14px; font-weight: 600; }
.side-panel-body {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.side-panel-body::-webkit-scrollbar {
    display: none;
}
.side-panel-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* Page Modal */
#page-modal-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(74, 144, 255, 0.15); }
#page-modal-input::placeholder { color: var(--text-dim); }

/* Hidden file input */
#file-input { display: none; }

/* Component styling */
.schematic-object { cursor: pointer; }
.schematic-object:hover { filter: brightness(1.2); }
.symbol { color: #ffcc00; }
.pin-marker { fill: #4a9eff; opacity: 0.9; }
.pin-marker:hover { opacity: 1; }

/* Clickable port reference labels */
.clickable-port-ref {
    cursor: pointer;
    transition: filter 0.15s;
}
.clickable-port-ref:hover {
    filter: brightness(1.4);
}
.clickable-port-ref:hover rect {
    stroke-width: 1;
}

/* Clickable ref/value labels */
.clickable-label {
    cursor: pointer;
    transition: fill 0.15s, filter 0.15s;
}
.clickable-label:hover {
    filter: brightness(1.4);
    text-decoration: underline;
}

/* Selection layer - pass through most events but allow wire handles */
#selection-layer {
    pointer-events: none;  /* Layer itself doesn't capture events */
}
#selection-layer .wire-handle {
    pointer-events: all;   /* Wire handles are still interactive for resizing */
}

/* Selection highlight */
.selected-highlight {
    stroke: #58a6ff;
    stroke-width: 2;
    stroke-dasharray: 5,3;
    fill: rgba(88, 166, 255, 0.1);
    animation: selection-pulse 1.5s ease-in-out infinite;
    pointer-events: none;  /* Allow clicks to pass through to objects below */
}
/* Line-based selection highlight for wires (follows the wire path) */
.selected-highlight-line {
    stroke: #58a6ff;
    stroke-width: 8;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 8,4;
    fill: none;
    opacity: 0.5;
    animation: selection-pulse 1.5s ease-in-out infinite;
    pointer-events: none;
}
@keyframes selection-pulse {
    0%, 100% { stroke-opacity: 1; }
    50% { stroke-opacity: 0.5; }
}

/* Snap-to-pin indicator animation */
@keyframes snap-pulse {
    0%, 100% { r: 10; opacity: 0.8; }
    50% { r: 14; opacity: 0.5; }
}
.snap-indicator {
    animation: snap-pulse 0.6s ease-in-out infinite;
}
.junction-indicator {
    animation: snap-pulse 0.4s ease-in-out infinite;
}

/* Login Page Styles */
.login-card {
    background: #16213e;
    padding: 40px;
    border-radius: 12px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.login-card h1 { font-size: 24px; margin-bottom: 8px; color: #4a69bd; }
.login-card p { color: #8892b0; font-size: 14px; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #30363d;
    background: #0d1117;
    color: #c9d1d9;
    border-radius: 6px;
    font-size: 14px;
}
.form-group input:focus { outline: none; border-color: #4a69bd; }
.login-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #4a69bd, #6a89cc);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}
.login-btn:hover { opacity: 0.9; }
.error { color: #f85149; font-size: 13px; margin-bottom: 16px; }

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-dim);
    transition: all 0.2s ease;
}
.theme-toggle:hover {
    background: var(--bg-light);
    color: var(--text);
    border-color: var(--accent);
}
.theme-toggle svg {
    width: 16px;
    height: 16px;
}
.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }
[data-theme="light"] .theme-toggle .sun-icon { display: block; }
[data-theme="light"] .theme-toggle .moon-icon { display: none; }

/* Comment indicator on components */
.comment-indicator {
    cursor: pointer;
}
.comment-indicator circle {
    transition: fill 0.15s, r 0.15s;
}
.comment-indicator:hover circle {
    fill: #ff8c00;
}

/* Comment textarea in properties */
.prop-comment {
    width: 100%;
    min-height: 80px;
    padding: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 12px;
    font-family: inherit;
    resize: vertical;
    line-height: 1.4;
}
.prop-comment:focus {
    outline: none;
    border-color: var(--accent);
}
.prop-comment::placeholder {
    color: var(--text-dim);
}

/* Comment badge in properties */
.comment-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    background: var(--comment-indicator);
    color: #fff;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 500;
}

/* Light theme specific adjustments */
[data-theme="light"] .menu-content {
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
[data-theme="light"] .context-menu {
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
[data-theme="light"] .modal {
    background: #ffffff;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

/* Schematic element colors - wire, bus, junction */
.wire-element {
    stroke: var(--wire-color);
}
.wire-element.power-wire {
    stroke: var(--power-wire-color) !important;
    stroke-width: 3 !important;
}
.wire-element.ground-wire {
    stroke: var(--ground-color) !important;
    stroke-width: 3 !important;
}
.bus-element {
    stroke: var(--bus-color);
}
.junction-element {
    fill: var(--junction-color);
    stroke: var(--wire-color);
}

/* Symbol colors for light theme */
[data-theme="light"] .symbol text {
    fill: #1a1a1a;
}
[data-theme="light"] .symbol:not(.no-pop) path,
[data-theme="light"] .symbol:not(.no-pop) line,
[data-theme="light"] .symbol:not(.no-pop) rect,
[data-theme="light"] .symbol:not(.no-pop) circle,
[data-theme="light"] .symbol:not(.no-pop) polyline,
[data-theme="light"] .symbol:not(.no-pop) polygon {
    stroke: #1a1a1a;
}

/* Hide number input spinners */
input.no-spinner::-webkit-outer-spin-button,
input.no-spinner::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input.no-spinner {
    -moz-appearance: textfield;
}

/* Analysis Mode Toggle and Dropdown */
.tool-btn-group {
    display: inline-block;
}

.analysis-layers-dropdown {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    min-width: 180px;
    z-index: 1000;
}

.analysis-layers-dropdown .dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}

.analysis-layers-dropdown .dropdown-close {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 18px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.analysis-layers-dropdown .dropdown-close:hover {
    color: var(--text);
}

.analysis-layers-dropdown .dropdown-body {
    padding: 8px 0;
}

.analysis-layers-dropdown .checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-dim);
    transition: background 0.15s, color 0.15s;
}

.analysis-layers-dropdown .checkbox-item:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.analysis-layers-dropdown .checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* Analysis mode button active state */
#analysis-mode-btn.active {
    background: #238636;
    color: #fff;
}

#analysis-mode-btn.active svg {
    stroke: #fff;
}

/* Analysis overlay visibility classes */
.analysis-hidden {
    display: none !important;
}

/* Analysis layer specific styling */
.analysis-voltage-label {
    pointer-events: none;
}

.analysis-i2c-label {
    pointer-events: none;
}

.analysis-warning-indicator {
    pointer-events: auto;
    cursor: help;
}

/* Light theme adjustments */
[data-theme="light"] .analysis-layers-dropdown {
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* =================================
   Simulation Menu Styles
   ================================= */

/* Wider menu content for simulation menu */
.menu-content-wide {
    min-width: 280px;
}

/* Simulation menu badge (in menu trigger) */
.sim-menu-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 9px;
    margin-left: 6px;
    padding: 0 5px;
    background: #e74c3c;
    color: #fff;
}

.sim-menu-badge.warning {
    background: #f39c12;
}

.sim-menu-badge.ok {
    background: #27ae60;
}

/* Menu section styling */
.sim-menu-section {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}

.sim-menu-section:last-child {
    border-bottom: none;
}

.sim-menu-section-title {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

/* Simulation status */
.sim-menu-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.sim-status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.sim-status-badge.sim-status-ok {
    background: rgba(39, 174, 96, 0.2);
    color: #27ae60;
}

.sim-status-badge.sim-status-error {
    background: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
}

.sim-status-badge.sim-status-warning {
    background: rgba(243, 156, 18, 0.2);
    color: #f39c12;
}

.sim-status-badge.sim-status-idle {
    background: rgba(139, 148, 158, 0.2);
    color: var(--text-dim);
}

/* Warnings section */
.sim-menu-warnings {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sim-warning-count {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.sim-warning-count.critical {
    background: rgba(231, 76, 60, 0.15);
    color: #e74c3c;
}

.sim-warning-count.warning {
    background: rgba(243, 156, 18, 0.15);
    color: #f39c12;
}

.sim-warning-count.info {
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent);
}

.sim-no-warnings {
    color: #27ae60;
    font-size: 12px;
    padding: 4px 0;
}

/* Warning list */
.sim-menu-warning-list {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.sim-warning-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 6px 8px;
    margin: 2px 0;
    border-radius: 4px;
    font-size: 11px;
    line-height: 1.4;
    cursor: pointer;
    transition: background 0.15s;
}

.sim-warning-item:hover {
    background: var(--bg-hover);
}

.sim-warning-item.critical {
    background: rgba(231, 76, 60, 0.1);
}

.sim-warning-item.warning {
    background: rgba(243, 156, 18, 0.1);
}

.sim-warning-item .warning-icon {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
}

.sim-warning-item .warning-text {
    flex: 1;
    color: var(--text);
}

.sim-warning-item .warning-location {
    font-size: 10px;
    color: var(--text-dim);
    margin-top: 2px;
}

/* Wire loading section */
.sim-menu-wire-loading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
}

.sim-menu-edit-btn {
    padding: 4px 10px;
    font-size: 11px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.sim-menu-edit-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}

/* Clickable net list in simulation menu */
.sim-net-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 8px;
    font-size: 11px;
    cursor: pointer;
    border-radius: 3px;
    transition: background 0.15s;
}

.sim-net-item:hover {
    background: var(--bg-hover, rgba(255,255,255,0.1));
}

.sim-net-item:hover .net-name {
    color: var(--accent);
}

.sim-net-item .net-name {
    color: var(--text);
    font-weight: 500;
}

.sim-net-item .net-cap {
    color: var(--text-dim);
    font-size: 10px;
}

/* Data status legend */
.sim-menu-legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sim-legend-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-dim);
}

.sim-legend-label {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}

/* Actions section */
.sim-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sim-action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-size: 12px;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s;
    text-align: left;
}

.sim-action-btn:hover {
    background: var(--bg-hover);
}

.sim-action-btn svg {
    width: 14px;
    height: 14px;
    stroke: var(--text-dim);
}

.sim-action-btn .shortcut {
    margin-left: auto;
    font-size: 10px;
    color: var(--text-dim);
    background: var(--bg-light);
    padding: 2px 6px;
    border-radius: 3px;
}

/* Light theme adjustments for simulation menu */
[data-theme="light"] .sim-status-badge.sim-status-ok {
    background: rgba(39, 174, 96, 0.15);
}

[data-theme="light"] .sim-warning-count.critical {
    background: rgba(231, 76, 60, 0.12);
}

[data-theme="light"] .sim-warning-count.warning {
    background: rgba(243, 156, 18, 0.12);
}

/* =================================
   Help Modal - Tabbed Navigation
   ================================= */

/* Tutorial banner at top of help modal */
.help-tutorial-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.1), rgba(88, 166, 255, 0.05));
    border-bottom: 1px solid var(--border);
}
.tutorial-banner-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.tutorial-banner-text strong {
    font-size: 14px;
    color: var(--text);
}
.tutorial-banner-text span {
    font-size: 12px;
    color: var(--text-dim);
}
.help-tutorial-banner .btn {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}
.help-tutorial-banner .btn svg {
    flex-shrink: 0;
}

/* Tab navigation bar */
.help-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 20px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
}
.help-tabs::-webkit-scrollbar {
    display: none;
}

/* Individual tab buttons */
.help-tab {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
}
.help-tab:hover {
    background: var(--bg-light);
    color: var(--text);
}
.help-tab.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Tab content panels */
.help-panel {
    animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Quick Start header */
.quickstart-header {
    text-align: center;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.quickstart-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 8px 0;
}
.quickstart-header p {
    font-size: 14px;
    color: var(--text-dim);
    margin: 0;
}

/* Quick Start steps */
.quick-start-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.quick-start-step {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.15s;
}
.quick-start-step:hover {
    border-color: var(--accent);
}
.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
}
.step-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 6px 0;
}
.step-content p {
    font-size: 13px;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.5;
}
.step-content kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-medium);
    border: 1px solid var(--border);
    border-radius: 3px;
    font-family: monospace;
    font-size: 11px;
    color: var(--text);
}

/* Shortcuts table */
.shortcut-table {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.shortcut-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
    font-size: 12px;
    color: var(--text-dim);
}
.shortcut-row kbd {
    display: inline-block;
    min-width: 70px;
    padding: 4px 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
    color: var(--text);
    text-align: center;
}
.shortcut-row span {
    color: var(--text);
}

/* Feature grid for Tools tab */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
}
.feature-card {
    display: flex;
    gap: 12px;
    padding: 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.feature-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}
.feature-icon svg {
    stroke: currentColor;
    fill: none;
}
.feature-text strong {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.feature-text span {
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.4;
}

/* Help text and list styling */
.help-text {
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 12px;
    line-height: 1.5;
}
.help-list {
    margin: 0;
    padding-left: 20px;
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.8;
}
.help-list li {
    margin-bottom: 4px;
}
.help-list strong {
    color: var(--text);
}
.help-list kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 3px;
    font-family: monospace;
    font-size: 11px;
    color: var(--text);
}

/* Category grid for Library tab */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}
.category-item {
    padding: 12px 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.category-item strong {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}
.category-item span {
    font-size: 11px;
    color: var(--text-dim);
    line-height: 1.4;
}

/* Analysis layers list */
.analysis-layers-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 8px;
}
.analysis-layer-item {
    padding: 10px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
}
.analysis-layer-item strong {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}
.analysis-layer-item span {
    font-size: 11px;
    color: var(--text-dim);
}

/* Storage comparison for Files tab */
.storage-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.storage-option {
    padding: 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
}
.storage-option.highlight {
    border-color: var(--accent);
    background: rgba(88, 166, 255, 0.05);
}
.storage-option h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 12px 0;
}
.storage-option.highlight h4 {
    color: var(--accent);
}
.storage-option .help-list {
    margin: 0;
    padding-left: 18px;
    font-size: 12px;
}

/* Export formats */
.export-formats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.export-format {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
}
.export-format strong {
    min-width: 60px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}
.export-format span {
    font-size: 12px;
    color: var(--text-dim);
}

/* =================================
   Interactive Tutorial Overlay
   ================================= */

/* Main overlay - covers entire screen */
.tutorial-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    pointer-events: none;
}

/* Spotlight effect - highlights target element */
.tutorial-spotlight {
    position: absolute;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.75);
    border-radius: 8px;
    transition: all 0.3s ease;
    pointer-events: none;
}
.tutorial-spotlight::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--accent);
    border-radius: 12px;
    animation: spotlight-pulse 1.5s ease-in-out infinite;
}
@keyframes spotlight-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Tooltip */
.tutorial-tooltip {
    position: absolute;
    width: 320px;
    background: var(--bg-medium);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    pointer-events: auto;
    animation: tooltip-appear 0.3s ease;
}
@keyframes tooltip-appear {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Tooltip header */
.tutorial-tooltip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}
.tutorial-step-indicator {
    font-size: 11px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.tutorial-close {
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 18px;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.tutorial-close:hover {
    background: var(--bg-light);
    color: var(--text);
}

/* Tooltip content */
.tutorial-tooltip h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin: 16px 16px 8px;
}
.tutorial-tooltip p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 0 16px 16px;
}

/* Progress dots */
.tutorial-progress {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
}
.tutorial-dot {
    width: 8px;
    height: 8px;
    background: var(--bg-light);
    border-radius: 50%;
    transition: all 0.2s;
}
.tutorial-dot.active {
    background: var(--accent);
    transform: scale(1.2);
}
.tutorial-dot.completed {
    background: rgba(88, 166, 255, 0.5);
}

/* Navigation buttons */
.tutorial-nav {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-dark);
    border-radius: 0 0 12px 12px;
}
.tutorial-btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid transparent;
}
.tutorial-btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    margin-left: auto;
}
.tutorial-btn-primary:hover {
    background: var(--accent-hover);
}
.tutorial-btn-secondary {
    background: var(--bg-light);
    color: var(--text);
    border-color: var(--border);
}
.tutorial-btn-secondary:hover {
    background: var(--bg-medium);
}
.tutorial-btn-end {
    background: rgba(248, 81, 73, 0.1);
    color: #f85149;
    border-color: rgba(248, 81, 73, 0.3);
}
.tutorial-btn-end:hover {
    background: rgba(248, 81, 73, 0.2);
}
.tutorial-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Light theme adjustments */
[data-theme="light"] .tutorial-spotlight {
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.6);
}
[data-theme="light"] .tutorial-tooltip {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}