/* Custom Styles & Engineering Animations */

#presets-modal.hidden,
#delete-confirm-modal.hidden,
#overlay-feedback.hidden,
#inspector-panel.hidden,
#engineer-monitor-panel.hidden,
#ai-agent-drawer.hidden,
#arduino-code-panel.hidden,
#wire-action-bar.hidden,
#mobile-filter-bar.hidden,
#live-sim-banner.hidden {
    display: none !important;
}

#presets-modal:not(.hidden),
#delete-confirm-modal:not(.hidden),
#overlay-feedback:not(.hidden) {
    display: flex !important;
}

#presets-modal {
    touch-action: auto !important;
}

#presets-modal-list {
    touch-action: pan-y !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

#mobile-filter-bar:not(.hidden) {
    display: flex !important;
}

/* Accessibility & Semantic SEO Utility (Fully hidden from visual layout, 0 impact on UI) */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border-width: 0 !important;
}

:root {
    --wire-color-default: #ef4444;
    --primary-color: #0ea5e9;
}

html {
    width: 100%;
    height: 100%;
    height: 100dvh;
    height: -webkit-fill-available;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    touch-action: pan-x pan-y;
    overscroll-behavior: none;
    width: 100%;
    height: 100%;
    height: 100dvh;
    height: -webkit-fill-available;
    height: var(--app-height, 100dvh);
    position: fixed;
    inset: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

/* Header horizontal overflow safety on small mobile viewports */
header {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
header::-webkit-scrollbar {
    display: none;
}

/* 30px Engineering Grid matching Component & Breadboard Pitch */
.workbench-grid {
    background-color: #f1f5f9;
    background-image:
        radial-gradient(#94a3b8 1.25px, transparent 1.25px),
        linear-gradient(to right, rgba(148, 163, 184, 0.08) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
    background-size: 30px 30px, 30px 30px, 30px 30px;
}

/* Responsive Layout for Mobile & Small Tablets */
@media (max-width: 768px) {
    main {
        flex-direction: column-reverse;
        flex: 1 1 0% !important;
        min-height: 0 !important;
        overflow: hidden !important;
    }

    aside#sidebar {
        width: 100% !important;
        height: calc(72px + env(safe-area-inset-bottom, 0px)) !important;
        min-height: calc(72px + env(safe-area-inset-bottom, 0px)) !important;
        max-height: calc(72px + env(safe-area-inset-bottom, 0px)) !important;
        padding: 4px 6px calc(4px + env(safe-area-inset-bottom, 0px)) 6px !important;
        flex-direction: row !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        border-top: 1px solid #e2e8f0;
        border-left: none !important;
        touch-action: pan-x;
        -webkit-overflow-scrolling: touch;
        background-color: #f8fafc !important;
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.06);
        z-index: 40;
        flex-shrink: 0 !important;
        scrollbar-width: thin;
    }

    aside#sidebar.mobile-collapsed {
        height: 0px !important;
        min-height: 0px !important;
        max-height: 0px !important;
        padding: 0 !important;
        border-top: none !important;
        overflow: hidden !important;
        box-shadow: none !important;
    }

    #mobile-dock-tab-group {
        bottom: 0 !important;
        left: 8px !important;
        border-bottom-left-radius: 0 !important;
        border-bottom-right-radius: 0 !important;
        border-bottom: none !important;
        box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.16) !important;
        z-index: 35 !important;
    }

    aside#sidebar.mobile-collapsed + #workbench #mobile-dock-tab-group {
        bottom: env(safe-area-inset-bottom, 0px) !important;
    }

    #mobile-dock-toggle {
        padding: 3px 8px !important;
        font-size: 10px !important;
    }

    #mobile-filter-btn {
        padding: 3px 8px !important;
        font-size: 10px !important;
    }

    #canvas-controls {
        bottom: 30px !important;
        right: 6px !important;
        padding: 2px 4px !important;
        gap: 2px !important;
        transform-origin: bottom right;
        z-index: 30 !important;
    }

    aside#sidebar.mobile-collapsed + #workbench #canvas-controls {
        bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important;
    }

    #mobile-filter-bar {
        bottom: calc(76px + env(safe-area-inset-bottom, 0px)) !important;
    }

    #toolbox {
        display: flex !important;
        flex-direction: row !important;
        padding-bottom: 0 !important;
        padding-right: 0 !important;
        gap: 0.35rem !important;
        align-items: center;
        width: max-content;
        height: 100%;
        overflow: visible !important;
        touch-action: pan-x;
    }

    .toolbox-item {
        min-width: 62px;
        max-width: 68px;
        height: 60px;
        padding: 3px 4px !important;
        border-radius: 12px !important;
        touch-action: pan-x;
        flex-shrink: 0 !important;
    }

    .toolbox-preview {
        width: 32px !important;
        height: 32px !important;
        margin-bottom: 1px !important;
    }

    .toolbox-label {
        font-size: 9.5px !important;
        line-height: 1.05 !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        width: 100%;
    }

    #workbench {
        flex: 1 1 0% !important;
        height: auto !important;
        min-height: 0 !important;
    }
}

@media (max-width: 380px) {
    #canvas-controls {
        transform: scale(0.9) !important;
        right: 4px !important;
        bottom: 30px !important;
    }
    aside#sidebar.mobile-collapsed + #workbench #canvas-controls {
        bottom: calc(8px + env(safe-area-inset-bottom, 0px)) !important;
    }
    #mobile-dock-tab-group {
        left: 6px !important;
    }
    #mobile-dock-toggle {
        padding: 2.5px 6px !important;
        font-size: 9.5px !important;
    }
    #mobile-filter-btn {
        padding: 2.5px 6px !important;
        font-size: 9.5px !important;
    }
}

@media (max-width: 340px) {
    #canvas-controls {
        transform: scale(0.78) !important;
        right: 2px !important;
        bottom: 30px !important;
    }
    aside#sidebar.mobile-collapsed + #workbench #canvas-controls {
        bottom: calc(6px + env(safe-area-inset-bottom, 0px)) !important;
    }
    #mobile-dock-tab-group {
        left: 4px !important;
    }
    #mobile-dock-toggle {
        padding: 2px 5px !important;
        font-size: 9px !important;
    }
    #mobile-filter-btn {
        padding: 2px 5px !important;
        font-size: 9px !important;
    }
    #mobile-filter-btn #mobile-filter-btn-text {
        display: none !important;
    }
}

/* Sidebar Collapsed State */
#sidebar.collapsed {
    width: 0 !important;
    padding: 0 !important;
    border: none;
}

#sidebar.collapsed > *:not(#sidebar-toggle) {
    display: none !important;
}

#sidebar.collapsed #sidebar-toggle i {
    transform: rotate(180deg);
}

/* Scrollbar for toolbox */
#toolbox::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

#toolbox::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 4px;
}

/* Component Container & Stacking Hierarchy */
.component {
    touch-action: none;
    user-select: none;
    z-index: 10;
}

.component[data-type="breadboard"] {
    z-index: 5 !important;
}

.component.comp-selected {
    z-index: 35 !important;
}

.component[data-type="breadboard"].comp-selected {
    z-index: 5 !important;
}

.comp-actions {
    position: absolute;
    top: -38px;
    z-index: 45 !important;
}

.comp-actions button {
    position: relative;
    z-index: 46;
}

.component.comp-selected .component-rotatable::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px dashed #0ea5e9;
    border-radius: 12px;
    pointer-events: none;
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.35);
}

/* Rubber-band Marquee Selection Box */
.selection-marquee {
    position: absolute;
    background: rgba(14, 165, 233, 0.14) !important;
    border: 2px dashed #0284c7 !important;
    border-radius: 6px !important;
    pointer-events: none !important;
    z-index: 90 !important;
    box-shadow: 0 0 18px rgba(14, 165, 233, 0.3) !important;
}

/* Ensure Quick Actions & Label are visible ONLY when Component is explicitly Selected (Never on simple hover) */
.component.comp-selected .comp-actions {
    opacity: 1 !important;
    pointer-events: auto !important;
}

.component.comp-selected .component-label {
    opacity: 1 !important;
    z-index: 36 !important;
}

/* Click-to-Place Stamp Mode */
body.placement-mode #workbench {
    cursor: crosshair !important;
}

.placement-ghost {
    position: fixed;
    pointer-events: none;
    z-index: 1000;
    transform: translate(-50%, -50%) scale(0.92);
    filter: drop-shadow(0 14px 28px rgba(15, 23, 42, 0.45));
    transition: transform 0.06s ease-out;
}

/* Hide action toolbars when cursor hovers over any terminal or during active wiring to prevent ANY visual obstruction */
.component:has(.terminal:hover) .comp-actions,
.component:has(.terminal.terminal-active) .comp-actions,
#workbench.wiring-active .comp-actions,
body.wiring-active .comp-actions {
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Connection Points (Terminals) - Always on Top with High Z-Index to Guarantee 100% Clickability */
.terminal {
    position: absolute;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 50 !important;
    cursor: crosshair;
    touch-action: none;
    transition: transform 0.18s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.18s ease, background-color 0.18s ease;
}

/* Component Lead Pins */
.terminal-pin {
    width: 13px;
    height: 13px;
    background: radial-gradient(circle at 35% 35%, #ffffff, #cbd5e1);
    border: 2.5px solid #475569;
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.25);
}

/* Expanded invisible touch hit area for easy finger tapping on component pins */
.terminal-pin::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
}

.terminal-pin.term-pos {
    border-color: #ef4444;
    background: radial-gradient(circle at 35% 35%, #fff1f2, #fecdd3);
}

.terminal-pin.term-neg {
    border-color: #2563eb;
    background: radial-gradient(circle at 35% 35%, #eff6ff, #bfdbfe);
}

/* Breadboard Socket Terminals - Crisp & exact inside each 11x11 hole socket */
.terminal-bb {
    width: 11px;
    height: 11px;
    border-radius: 2.5px;
    background: transparent;
    border: 1.5px solid transparent;
}

.terminal-bb::before {
    content: '';
    position: absolute;
    inset: -2.5px;
}

/* Educational X-Ray Highlight for Connected Breadboard Strip */
.terminal-bb.bb-connected-highlight,
.terminal-arduino.bb-connected-highlight {
    background: rgba(16, 185, 129, 0.35);
    border-color: #10b981;
    box-shadow: 0 0 5px rgba(16, 185, 129, 0.5);
}

/* Arduino Header Socket Terminals - Exact 11x11 female header socket hitboxes */
.terminal-arduino {
    width: 11px;
    height: 11px;
    border-radius: 2.5px;
    background: transparent;
    border: 1.5px solid transparent;
}

.terminal-arduino::before {
    content: '';
    position: absolute;
    inset: -3px;
}

.terminal-arduino:hover,
.terminal-arduino.terminal-active {
    transform: translate(-50%, -50%) scale(1.18);
    border-color: #14b8a6 !important;
    background: rgba(45, 212, 191, 0.45) !important;
    box-shadow: 0 0 0 2.5px rgba(20, 184, 166, 0.45);
    z-index: 70 !important;
}

/* Keypad Dupont Socket Terminals - Refined, compact & beautifully spaced without collision */
.terminal-keypad {
    width: 9px;
    height: 9px;
    background: radial-gradient(circle at 35% 35%, #ffffff, #94a3b8);
    border: 1.5px solid #475569;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.35);
}

.terminal-keypad::before {
    content: '';
    position: absolute;
    inset: -2.5px;
    border-radius: 50%;
}

.terminal-keypad:hover,
.terminal-keypad.terminal-active {
    transform: translate(-50%, -50%) scale(1.35);
    border-color: #38bdf8 !important;
    background: #e0f2fe !important;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.45), 0 2px 6px rgba(0, 0, 0, 0.3);
    z-index: 50;
}

.terminal-pin:hover,
.terminal-pin.terminal-active {
    transform: translate(-50%, -50%) scale(1.3);
    border-color: #f59e0b !important;
    background: #fef3c7 !important;
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.35), 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 40;
}

.terminal-bb:hover,
.terminal-bb.terminal-active {
    transform: translate(-50%, -50%) scale(1.08);
    border-color: #f59e0b !important;
    background: rgba(254, 243, 199, 0.75) !important;
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.45);
    z-index: 40;
}

/* Clean Non-Intrusive Terminal Hover Highlighting (No blocking popups) */
.terminal-pin:hover,
.terminal-pin.terminal-active {
    transform: translate(-50%, -50%) scale(1.35);
    border-color: #0284c7 !important;
    background: radial-gradient(circle at 35% 35%, #ffffff, #38bdf8) !important;
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.45), 0 2px 6px rgba(0, 0, 0, 0.35);
    z-index: 70 !important;
}

/* Wire Styling */
.wire-casing {
    stroke: rgba(241, 245, 249, 0.94);
    stroke-width: 8.4;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    pointer-events: none;
}

.circuit-wire {
    stroke-width: 5.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 3px 3px rgba(15, 23, 42, 0.22));
    transition: stroke-width 0.15s ease, filter 0.15s ease;
    cursor: grab;
    pointer-events: stroke;
}

#wire-layer.wire-organized-pulse .circuit-wire {
    animation: wire-organize-flash 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes wire-organize-flash {
    0% {
        stroke-width: 7.5;
        filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.65));
    }
    100% {
        stroke-width: 5.5;
        filter: drop-shadow(0 3px 3px rgba(15, 23, 42, 0.22));
    }
}

.circuit-wire:active {
    cursor: grabbing;
}

.wire-group:hover .circuit-wire {
    stroke-width: 7;
    filter: drop-shadow(0 0 6px rgba(14, 165, 233, 0.55));
}

/* Wire Isolation & Interactive Focus / Selection Tracing */
#wire-layer.wire-isolate-mode .wire-group:not(.wire-focused):not(.wire-selected),
#wire-layer.wire-selected-mode .wire-group:not(.wire-selected) {
    opacity: 0.15 !important;
    filter: grayscale(45%) brightness(0.9) !important;
    transition: opacity 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.22s ease;
    pointer-events: stroke;
}

#wire-layer.wire-isolate-mode .wire-group.wire-focused,
#wire-layer.wire-selected-mode .wire-group.wire-selected {
    opacity: 1 !important;
    filter: none !important;
    transition: opacity 0.15s ease;
}

.wire-group.wire-selected .circuit-wire {
    stroke-width: 7.4 !important;
    filter: drop-shadow(0 0 10px currentColor) drop-shadow(0 0 3px #ffffff) !important;
    transition: stroke-width 0.18s ease, filter 0.18s ease;
}

.wire-group.wire-selected .wire-casing {
    stroke-width: 10.5 !important;
}

.wire-group.wire-focused .circuit-wire {
    stroke-width: 7.8 !important;
    filter: drop-shadow(0 0 10px currentColor) drop-shadow(0 0 3px #ffffff) !important;
}

.wire-group.wire-focused .wire-flow,
.wire-group.wire-selected .wire-flow {
    display: block !important;
    opacity: 1 !important;
    stroke-width: 4.8 !important;
    animation-duration: 0.45s !important;
}

/* Pulsing neon highlight for connected terminals (keeps translate(-50%, -50%) so it stays 100% centered on the pin) */
.terminal.terminal-highlight-pulse {
    transform: translate(-50%, -50%) scale(1.26) !important;
    border-color: #f59e0b !important;
    background-color: rgba(245, 158, 11, 0.28) !important;
    filter: drop-shadow(0 0 6px #f59e0b) !important;
    z-index: 100 !important;
    transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.18s ease !important;
    box-shadow: 0 0 0 2.5px rgba(245, 158, 11, 0.9), 0 0 12px rgba(239, 68, 68, 0.85) !important;
}

.wire-select-halo {
    stroke: #0ea5e9;
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 5 5;
    fill: none;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.wire-group.wire-selected .wire-select-halo {
    opacity: 0.75;
    animation: wire-halo-pulse 1.2s ease-in-out infinite alternate;
}

@keyframes wire-halo-pulse {
    from { opacity: 0.5; stroke-width: 11; }
    to { opacity: 0.9; stroke-width: 13.5; }
}

/* Precise SVG Wire Endpoint Selection Rings (100% mathematically aligned with terminal pins) */
.wire-endpoint-ring {
    display: none;
    fill: rgba(245, 158, 11, 0.22);
    stroke: #f59e0b;
    stroke-width: 2.8;
    pointer-events: none;
    filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.9));
}

.wire-group.wire-selected .wire-endpoint-ring,
.wire-group.wire-focused .wire-endpoint-ring {
    display: block !important;
    animation: wire-endpoint-pulse 1.2s ease-in-out infinite alternate;
}

@keyframes wire-endpoint-pulse {
    from {
        stroke-width: 2.2;
        opacity: 0.8;
    }
    to {
        stroke-width: 3.8;
        opacity: 1;
    }
}

/* Hide scrollbar for Chrome, Safari, Edge, Firefox in compact toolbars */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.wire-bend-handle {
    fill: #ffffff;
    stroke: #0284c7;
    stroke-width: 2.5;
    cursor: grab;
    pointer-events: all;
    filter: drop-shadow(0 2px 4px rgba(15, 23, 42, 0.35));
    transition: transform 0.12s ease, fill 0.12s ease;
}

.wire-bend-handle:hover,
.wire-bend-handle:active {
    fill: #fef08a;
    stroke: #0369a1;
    cursor: grabbing;
}

/* Animated Current Flow Particles on Active Wires */
.wire-flow {
    stroke: #fef08a;
    stroke-width: 2.8;
    fill: none;
    stroke-linecap: round;
    stroke-dasharray: 6 14;
    animation: current-flow-forward 0.55s linear infinite;
    pointer-events: none;
}

.wire-flow.flow-reverse {
    animation-name: current-flow-reverse;
}

.wire-flow.flow-electrons {
    stroke: #bae6fd;
}

.wire-dir-arrow {
    fill: #fef08a;
    stroke: #0f172a;
    stroke-width: 1.1;
    stroke-linejoin: round;
    pointer-events: none;
    filter: drop-shadow(0 1px 2px rgba(15, 23, 42, 0.45));
}

.wire-dir-arrow.flow-electrons {
    fill: #bae6fd;
}

@keyframes current-flow-forward {
    from {
        stroke-dashoffset: 20;
    }
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes current-flow-reverse {
    from {
        stroke-dashoffset: -20;
    }
    to {
        stroke-dashoffset: 0;
    }
}

/* DC Motor Fan Spin Animation */
@keyframes spin-fan {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Submersible DC Water Pump Visual Effects */
@keyframes pump-stream-up {
    from {
        stroke-dashoffset: 18;
    }
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes pump-drop-shoot-center {
    0% {
        transform: translate(0, 0) scale(0.55);
        opacity: 0;
    }
    18% {
        opacity: 0.98;
    }
    82% {
        opacity: 0.9;
    }
    100% {
        transform: translate(0, -48px) scale(1.05);
        opacity: 0;
    }
}

@keyframes pump-drop-shoot-left {
    0% {
        transform: translate(0, 0) scale(0.5);
        opacity: 0;
    }
    20% {
        opacity: 0.95;
    }
    75% {
        transform: translate(-11px, -36px) scale(0.95);
        opacity: 0.85;
    }
    100% {
        transform: translate(-16px, -26px) scale(0.65);
        opacity: 0;
    }
}

@keyframes pump-drop-shoot-right {
    0% {
        transform: translate(0, 0) scale(0.5);
        opacity: 0;
    }
    20% {
        opacity: 0.95;
    }
    75% {
        transform: translate(11px, -38px) scale(0.95);
        opacity: 0.85;
    }
    100% {
        transform: translate(16px, -28px) scale(0.65);
        opacity: 0;
    }
}

@keyframes pump-suction-pull {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 0;
    }
    22% {
        opacity: 0.95;
    }
    85% {
        opacity: 0.85;
    }
    100% {
        transform: translate(21px, -17px) scale(0.32);
        opacity: 0;
    }
}

@keyframes pump-nozzle-ripple {
    0%, 100% {
        transform: scale(0.92);
        opacity: 0.72;
    }
    50% {
        transform: scale(1.16);
        opacity: 1;
    }
}

@keyframes pump-micro-hum {
    0%, 100% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(-0.45px, 0.35px);
    }
    50% {
        transform: translate(0.45px, -0.35px);
    }
    75% {
        transform: translate(-0.35px, -0.35px);
    }
}

.pump-water-jet,
.pump-intake-flow {
    opacity: 0;
    transition: opacity 0.22s ease, transform 0.22s ease;
    pointer-events: none;
}

.pump-running .pump-water-jet,
.pump-running .pump-intake-flow {
    opacity: 1;
}

.pump-running .pump-stream-line {
    animation: pump-stream-up var(--pump-dur, 0.52s) linear infinite;
}

.pump-running .pump-drop-center {
    animation: pump-drop-shoot-center calc(var(--pump-dur, 0.52s) * 1.15) cubic-bezier(0.2, 0.7, 0.35, 1) infinite;
}

.pump-running .pump-drop-center-2 {
    animation: pump-drop-shoot-center calc(var(--pump-dur, 0.52s) * 1.15) cubic-bezier(0.2, 0.7, 0.35, 1) infinite;
    animation-delay: calc(var(--pump-dur, 0.52s) * -0.57);
}

.pump-running .pump-drop-left {
    animation: pump-drop-shoot-left calc(var(--pump-dur, 0.52s) * 1.25) ease-out infinite;
    animation-delay: calc(var(--pump-dur, 0.52s) * -0.28);
}

.pump-running .pump-drop-right {
    animation: pump-drop-shoot-right calc(var(--pump-dur, 0.52s) * 1.25) ease-out infinite;
    animation-delay: calc(var(--pump-dur, 0.52s) * -0.82);
}

.pump-running .pump-suction-drop-1 {
    animation: pump-suction-pull calc(var(--pump-dur, 0.52s) * 1.15) ease-in infinite;
}

.pump-running .pump-suction-drop-2 {
    animation: pump-suction-pull calc(var(--pump-dur, 0.52s) * 1.15) ease-in infinite;
    animation-delay: calc(var(--pump-dur, 0.52s) * -0.55);
}

.pump-running .pump-suction-streak {
    animation: pump-stream-up var(--pump-dur, 0.52s) linear infinite;
}

.pump-running .pump-mouth-ripple {
    transform-box: fill-box;
    transform-origin: center;
    animation: pump-nozzle-ripple var(--pump-dur, 0.52s) ease-in-out infinite;
}

.pump-running .pump-impeller-rotor {
    transform-box: fill-box;
    transform-origin: center;
    animation: spin-fan calc(var(--pump-dur, 0.52s) * 0.7) linear infinite;
}

.pump-running .pump-body-hum {
    animation: pump-micro-hum 0.14s linear infinite;
}

/* Piezo Buzzer Active Sound Waves */
@keyframes pulse-waves {
    0% {
        transform: scale(0.92);
        opacity: 0.9;
    }
    100% {
        transform: scale(1.12);
        opacity: 0.2;
    }
}

.buzzer-active-anim {
    transform-origin: 45px 38px;
    animation: pulse-waves 0.35s ease-out infinite alternate;
}

/* Burnout & Short-Circuit Shake Effect */
@keyframes shake {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    20% { transform: translate(-3px, 1px) rotate(-1deg); }
    40% { transform: translate(3px, -1px) rotate(1deg); }
    60% { transform: translate(-3px, -1px) rotate(0deg); }
    80% { transform: translate(2px, 2px) rotate(-1deg); }
}

.burned-out {
    animation: shake 0.45s ease-in-out 2;
    filter: drop-shadow(0 0 10px rgba(249, 115, 22, 0.7)) brightness(0.78) contrast(1.2);
}

.short-circuit-comp {
    animation: shake 0.4s ease-in-out infinite;
    filter: drop-shadow(0 0 12px rgba(239, 68, 68, 0.8));
}

/* ==================== Rising Smoke Effect for Damaged Components ==================== */
.smoke-container {
    position: absolute;
    left: 50%;
    top: 25%;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 60;
}

.smoke-puff {
    position: absolute;
    width: 28px;
    height: 28px;
    margin-left: -14px;
    margin-top: -14px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(226, 232, 240, 0.95) 0%, rgba(148, 163, 184, 0.7) 38%, rgba(71, 85, 105, 0.35) 65%, rgba(15, 23, 42, 0) 80%);
    filter: blur(2px);
    opacity: 0;
    transform-origin: center bottom;
    will-change: transform, opacity;
}

.smoke-puff:nth-child(1) { animation: smoke-billow-1 2.2s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 0s; }
.smoke-puff:nth-child(2) { animation: smoke-billow-2 2.4s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 0.35s; }
.smoke-puff:nth-child(3) { animation: smoke-billow-3 2.1s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 0.7s; }
.smoke-puff:nth-child(4) { animation: smoke-billow-1 2.3s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 1.05s; }
.smoke-puff:nth-child(5) { animation: smoke-billow-2 2.5s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 1.4s; }
.smoke-puff:nth-child(6) { animation: smoke-billow-3 2.2s cubic-bezier(0.2, 0.6, 0.35, 1) infinite; animation-delay: 1.75s; }

/* Small glowing ember sparks popping out from damaged component */
.smoke-spark {
    position: absolute;
    width: 4px;
    height: 4px;
    margin-left: -2px;
    margin-top: -2px;
    border-radius: 50%;
    background: #f59e0b;
    box-shadow: 0 0 6px #f97316, 0 0 10px #ef4444;
    opacity: 0;
    will-change: transform, opacity;
}
.smoke-spark:nth-child(7) { animation: spark-pop-1 1.2s ease-out infinite; animation-delay: 0.1s; }
.smoke-spark:nth-child(8) { animation: spark-pop-2 1.4s ease-out infinite; animation-delay: 0.6s; }
.smoke-spark:nth-child(9) { animation: spark-pop-1 1.3s ease-out infinite; animation-delay: 1.1s; }

@keyframes smoke-billow-1 {
    0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.3);
    }
    12% {
        opacity: 0.92;
        transform: translate(-3px, -15px) scale(0.65);
    }
    45% {
        opacity: 0.65;
        transform: translate(8px, -45px) scale(1.35);
    }
    75% {
        opacity: 0.35;
        transform: translate(-6px, -80px) scale(2.1);
    }
    100% {
        opacity: 0;
        transform: translate(5px, -118px) scale(2.8);
    }
}

@keyframes smoke-billow-2 {
    0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.25);
    }
    12% {
        opacity: 0.88;
        transform: translate(4px, -18px) scale(0.6);
    }
    45% {
        opacity: 0.6;
        transform: translate(-10px, -50px) scale(1.4);
    }
    75% {
        opacity: 0.3;
        transform: translate(9px, -85px) scale(2.2);
    }
    100% {
        opacity: 0;
        transform: translate(-4px, -122px) scale(3.0);
    }
}

@keyframes smoke-billow-3 {
    0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.35);
    }
    12% {
        opacity: 0.95;
        transform: translate(-2px, -14px) scale(0.7);
    }
    45% {
        opacity: 0.7;
        transform: translate(6px, -42px) scale(1.3);
    }
    75% {
        opacity: 0.4;
        transform: translate(-7px, -75px) scale(1.9);
    }
    100% {
        opacity: 0;
        transform: translate(3px, -112px) scale(2.6);
    }
}

@keyframes spark-pop-1 {
    0% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    40% {
        opacity: 0.85;
        transform: translate(-8px, -20px) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translate(-15px, -32px) scale(0.2);
    }
}

@keyframes spark-pop-2 {
    0% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    40% {
        opacity: 0.9;
        transform: translate(9px, -22px) scale(1.3);
    }
    100% {
        opacity: 0;
        transform: translate(16px, -35px) scale(0.2);
    }
}

/* Potentiometer Interactive Steppers */
.pot-step-btn {
    transition: transform 0.12s ease, filter 0.12s ease;
}
.pot-step-btn:hover {
    filter: brightness(1.3);
}
.pot-step-btn:active {
    transform: scale(0.88);
}
.pot-actions-stepper button:active {
    transform: scale(0.85);
}

/* Opaque Solid Panels for Maximum Readability (No Translucent Glass on Mobile or Desktop) */
#inspector-panel {
    background-color: #ffffff !important;
    background: #ffffff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 1px solid #cbd5e1 !important;
    box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.25), 0 8px 10px -6px rgba(15, 23, 42, 0.2) !important;
}

#engineer-monitor-panel {
    background-color: #ffffff !important;
    background: #ffffff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 1px solid #cbd5e1 !important;
}

#canvas-controls {
    background-color: #ffffff !important;
    background: #ffffff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

#arduino-code-panel {
    background-color: rgba(15, 23, 42, 0.96) !important;
    backdrop-filter: blur(14px) !important;
    -webkit-backdrop-filter: blur(14px) !important;
    box-shadow: 0 20px 45px -10px rgba(2, 6, 23, 0.85), 0 0 20px rgba(13, 148, 136, 0.15) !important;
    border: 1px solid rgba(20, 184, 166, 0.35) !important;
    transition: width 0.22s ease, height 0.22s ease, max-height 0.22s ease, border-radius 0.22s ease, box-shadow 0.22s ease;
}

/* Collapsed Mini-Pill Mode for Microcontroller Code Editor */
#arduino-code-panel.is-collapsed {
    height: 48px !important;
    max-height: 48px !important;
    width: auto !important;
    min-width: 320px !important;
    max-width: 440px !important;
    border-radius: 9999px !important;
    box-shadow: 0 10px 25px -4px rgba(13, 148, 136, 0.4), 0 8px 12px -6px rgba(0, 0, 0, 0.6) !important;
    border-color: rgba(20, 184, 166, 0.6) !important;
    overflow: hidden !important;
}

#arduino-code-panel.is-collapsed .code-panel-collapsible {
    display: none !important;
}

#arduino-code-panel.is-collapsed .code-panel-subtitle {
    display: none !important;
}

#arduino-code-panel.is-collapsed .collapsed-only-btn {
    display: inline-flex !important;
}

#arduino-code-panel.is-collapsed .code-panel-header {
    border-bottom: none !important;
    padding: 6px 14px !important;
    background: transparent !important;
}

/* Dynamic Animated Connecting Leader Lines (Canvas Space) */
#code-pointer-path,
#web-pointer-path,
#bt-pointer-path,
.card-pointer-path {
    stroke-linecap: round;
    stroke-linejoin: round;
    animation: codePointerDash 1.4s linear infinite;
}

#cards-layer {
    pointer-events: none;
}

.circuit-card {
    pointer-events: auto !important;
    position: absolute !important;
}

.card-drag-handle {
    cursor: grab !important;
    user-select: none;
    -webkit-user-select: none;
}

.card-drag-handle:active {
    cursor: grabbing !important;
}

@keyframes codePointerDash {
    to {
        stroke-dashoffset: -24;
    }
}

.cursor-grab {
    cursor: grab !important;
}

.cursor-grab:active {
    cursor: grabbing !important;
}

.pir-trigger-btn:hover rect {
    filter: brightness(1.2);
}

#arduino-code-panel button {
    user-select: none;
    -webkit-user-select: none;
}

#arduino-serial-chevron, #arduino-pins-chevron {
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

#arduino-serial-drawer, #arduino-pins-drawer {
    animation: slideDownAccordion 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDownAccordion {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Electronic Components & SVG Direction Isolation (Strict LTR for Circuit Canvas)
   Prevents Arabic document dir="rtl" from reversing component SVGs, text coordinates,
   or causing LCD display text to render backwards / outside screen boundaries.
   ========================================================================== */
.component,
.component-rotatable,
.component-svg-holder,
.component svg,
#canvas-container svg,
svg.select-none text {
    direction: ltr !important;
    unicode-bidi: isolate;
}

/* Explicit LCD 16x2 Display Screen Text */
.lcd-line-0,
.lcd-line-1 {
    direction: ltr !important;
    text-anchor: start !important;
    unicode-bidi: isolate !important;
    writing-mode: horizontal-tb !important;
    dominant-baseline: alphabetic;
}

/* ==========================================================================
   Interactive Ultrasonic & PIR Sensor Target Styles
   ========================================================================== */
.pulse-beam {
    stroke-dashoffset: 60;
    animation: pulseBeamAnim 1.4s linear infinite;
}

@keyframes pulseBeamAnim {
    to {
        stroke-dashoffset: 0;
    }
}

.sensor-target-obstacle:hover .target-disk {
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.85);
    border-color: #38bdf8;
    transform: scale(1.1);
}

.sensor-target-obstacle:active .target-disk {
    box-shadow: 0 0 30px rgba(56, 189, 248, 1);
    transform: scale(0.96);
}

.pir-target-obstacle:hover .pir-target-disk {
    box-shadow: 0 0 25px rgba(52, 211, 153, 0.85);
    border-color: #34d399;
    transform: scale(1.1);
}



/* Responsive Top Bar Protection */
header {
    overflow: hidden !important;
}
header button, header select {
    max-height: 34px;
}
@media (max-width: 640px) {
    header {
        padding-left: 6px !important;
        padding-right: 6px !important;
    }
    header button, header select {
        font-size: 11px !important;
        padding-top: 3px !important;
        padding-bottom: 3px !important;
    }
}

/* ==========================================================================
   Unified AI Circuit Assistant Drawer & Smooth Scrolling
   ========================================================================== */
#ai-agent-drawer {
    display: flex;
    flex-direction: column;
    touch-action: auto !important;
    pointer-events: auto !important;
    overscroll-behavior: contain;
    box-sizing: border-box;
}

#ai-agent-drawer.hidden {
    display: none !important;
}

/* Compact Mobile Chat Drawer */
@media (max-width: 639px) {
    #ai-agent-drawer {
        height: 38vh !important;
        max-height: 42vh !important;
        min-height: 190px !important;
        bottom: 8px !important;
        left: 8px !important;
        right: 8px !important;
        width: auto !important;
        max-width: none !important;
    }
}

#ai-chat-view,
#ai-timeline-view,
#ai-netlist-view {
    display: flex;
    flex-direction: column;
    flex: 1 1 0% !important;
    min-height: 0 !important;
    overflow: hidden;
    box-sizing: border-box;
}

#ai-chat-view.hidden,
#ai-timeline-view.hidden,
#ai-netlist-view.hidden {
    display: none !important;
}

#ai-agent-messages,
#ai-timeline-view,
#ai-netlist-view {
    flex: 1 1 0% !important;
    min-height: 0 !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch !important;
    touch-action: pan-y !important;
    overscroll-behavior: contain !important;
}

/* Custom sleek scrollbar for AI Chat */
#ai-agent-messages::-webkit-scrollbar,
#ai-timeline-view::-webkit-scrollbar,
#ai-netlist-view::-webkit-scrollbar {
    width: 6px;
}
#ai-agent-messages::-webkit-scrollbar-track,
#ai-timeline-view::-webkit-scrollbar-track,
#ai-netlist-view::-webkit-scrollbar-track {
    background: rgba(241, 245, 249, 0.6);
    border-radius: 9999px;
}
#ai-agent-messages::-webkit-scrollbar-thumb,
#ai-timeline-view::-webkit-scrollbar-thumb,
#ai-netlist-view::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.7);
    border-radius: 9999px;
}
#ai-agent-messages::-webkit-scrollbar-thumb:hover,
#ai-timeline-view::-webkit-scrollbar-thumb:hover,
#ai-netlist-view::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.9);
}

/* AI Settings Modal Overlay & Presets Modal - Always on Top of All Drawers, Panels & Floating Windows */
#ai-agent-settings-modal {
    position: fixed !important;
    inset: 0 !important;
    z-index: 10000 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

#presets-modal {
    position: fixed !important;
    inset: 0 !important;
    z-index: 9000 !important;
    touch-action: auto !important;
}

#presets-modal-list {
    touch-action: pan-y !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.preset-card-item {
    transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.preset-card-item:hover {
    transform: translateY(-2px);
}

.preset-card-item:active {
    transform: scale(0.985);
}

.preset-category-chip {
    transition: all 0.15s ease;
}

.preset-category-chip.active {
    background-color: #0284c7 !important;
    color: #ffffff !important;
    border-color: #0284c7 !important;
    box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25) !important;
}


/* Multi-Selection Mode Active State */
#workbench.multi-select-active {
    cursor: crosshair !important;
}
#marquee-select-tool-btn.active {
    background-color: #0284c7 !important;
    color: #ffffff !important;
    border-color: #0369a1 !important;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.45) !important;
}
#marquee-select-tool-btn.active svg {
    stroke: #ffffff !important;
}

/* 3-Phase Induction Motor Realistic Industrial Animations */
@keyframes motor-air-drift {
    0% { opacity: 0; transform: translateX(0); }
    50% { opacity: 0.85; }
    100% { opacity: 0; transform: translateX(8px); }
}

@keyframes orbit-dash-cw {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -30; }
}

@keyframes orbit-dash-ccw {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: 30; }
}

.motor-air-1 { animation: motor-air-drift 0.55s linear infinite; }
.motor-air-2 { animation: motor-air-drift 0.55s linear infinite 0.18s; }
.motor-air-3 { animation: motor-air-drift 0.55s linear infinite 0.36s; }

.orbit-arrow-cw {
    animation: orbit-dash-cw 0.75s linear infinite;
}

.orbit-arrow-ccw {
    animation: orbit-dash-ccw 0.75s linear infinite;
}

/* Circuit Breaker Short-Circuit Flash & Arc Effects */
@keyframes breaker-short-flash {
    0% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.9), 0 0 20px rgba(250, 204, 21, 0.7);
        filter: drop-shadow(0 0 6px rgba(239, 68, 68, 0.9));
    }
    50% {
        box-shadow: 0 0 25px 6px rgba(239, 68, 68, 0.95), 0 0 40px 12px rgba(250, 204, 21, 0.95);
        filter: drop-shadow(0 0 16px rgba(250, 204, 21, 1));
    }
    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.9), 0 0 20px rgba(250, 204, 21, 0.7);
        filter: drop-shadow(0 0 6px rgba(239, 68, 68, 0.9));
    }
}

.breaker-tripped-short {
    animation: breaker-short-flash 0.5s ease-in-out infinite !important;
    border-radius: 8px !important;
}

@keyframes breaker-thermal-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.8);
    }
    50% {
        box-shadow: 0 0 18px 4px rgba(245, 158, 11, 0.9), 0 0 30px 6px rgba(234, 88, 12, 0.7);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.8);
    }
}

.breaker-tripped-thermal {
    animation: breaker-thermal-pulse 0.8s ease-in-out infinite !important;
    border-radius: 8px !important;
}

@keyframes arc-spark-jitter {
    0% { transform: scale(1) rotate(0deg); opacity: 0.95; }
    25% { transform: scale(1.15) rotate(4deg); opacity: 1; }
    50% { transform: scale(0.9) rotate(-3deg); opacity: 0.8; }
    75% { transform: scale(1.2) rotate(2deg); opacity: 1; }
    100% { transform: scale(1) rotate(0deg); opacity: 0.95; }
}

.breaker-spark-burst {
    animation: arc-spark-jitter 0.25s steps(2, start) infinite;
    transform-origin: center;
}

/* ==========================================================================
   Interactive 3D Stage — Calm Engineering CAD Workspace
   Supports Calm Slate-Blue (data-theme="blue") & Sage-Green (data-theme="green")
   ========================================================================== */
#scad-3d-stage {
    --scad3d-bg: #d8e4ef;
    --scad3d-surface: #e8f0f7;
    --scad3d-surface-alt: #d2e0ed;
    --scad3d-surface-hover: #c3d6e8;
    --scad3d-border: #adc3d8;
    --scad3d-ink: #162436;
    --scad3d-muted: #4b627a;
    --scad3d-accent: #0284c7;
    --scad3d-light-text: #f0f6fc;
    display: flex;
    flex-direction: column;
    background-color: var(--scad3d-bg);
    color: var(--scad3d-ink);
    border-right: 2px solid var(--scad3d-ink);
    transition: width 0.24s cubic-bezier(0.16, 1, 0.3, 1), flex 0.24s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.22s ease;
}

#scad-3d-stage.hidden {
    display: none !important;
}

/* Split Mode (2D + 3D side-by-side on desktop, stacked on mobile) */
main.scad-3d-split-active #workbench {
    flex: 1 1 50%;
    min-width: 0;
}

main.scad-3d-split-active #scad-3d-stage {
    flex: 1 1 50%;
    min-width: 300px;
    height: 100%;
    border-right: 2px solid var(--scad3d-ink);
}

/* Full 3D Mode (3D fills main workspace) */
main.scad-3d-full-active #workbench {
    display: none !important;
}

main.scad-3d-full-active #sidebar {
    display: none !important;
}

main.scad-3d-full-active #scad-3d-stage {
    flex: 1 1 100%;
    width: 100%;
    height: 100%;
    border-right: none;
}

@media (max-width: 767px) {
    main.scad-3d-split-active {
        flex-direction: column !important;
    }
    main.scad-3d-split-active #workbench {
        flex: 1 1 48% !important;
        width: 100% !important;
    }
    main.scad-3d-split-active #scad-3d-stage {
        flex: 1 1 52% !important;
        width: 100% !important;
        min-width: 0 !important;
        border-right: none !important;
        border-top: 2px solid var(--scad3d-ink) !important;
    }
}

/* Header 3D Toggle Button Active State */
#view-3d-toggle-btn.scad3d-header-btn-active {
    background-color: #162436 !important;
    color: #f0f6fc !important;
    border-color: #162436 !important;
    box-shadow: 0 2px 0 #0284c7 !important;
}

.scad3d-stage-header {
    background-color: var(--scad3d-surface);
    border-bottom: 1.5px solid var(--scad3d-border);
    color: var(--scad3d-ink);
}

.scad3d-brand-icon {
    background-color: var(--scad3d-ink);
    color: var(--scad3d-light-text);
}

.scad3d-brand-icon i {
    color: #38bdf8;
}

.scad3d-pill-badge {
    background-color: var(--scad3d-surface-alt);
    color: var(--scad3d-ink);
    border: 1px solid var(--scad3d-border);
}

/* 3D Stage Mode Switcher Buttons */
.scad3d-mode-btn {
    background-color: var(--scad3d-surface-alt);
    color: var(--scad3d-ink);
    border: 1.5px solid var(--scad3d-border);
}

.scad3d-mode-btn:hover {
    background-color: var(--scad3d-surface-hover);
    border-color: var(--scad3d-ink);
}

.scad3d-mode-btn.is-active {
    background-color: var(--scad3d-ink) !important;
    color: var(--scad3d-light-text) !important;
    border-color: var(--scad3d-ink) !important;
}

.scad3d-close-btn {
    background-color: var(--scad3d-surface-alt);
    color: var(--scad3d-ink);
    border: 1.5px solid var(--scad3d-border);
}

.scad3d-close-btn:hover {
    background-color: #dc2626;
    color: #ffffff;
    border-color: #dc2626;
}

.scad3d-gesture-hint {
    background-color: var(--scad3d-surface);
    border: 1.5px solid var(--scad3d-border);
    color: var(--scad3d-muted);
}

#scad3d-callout {
    background-color: var(--scad3d-surface);
    color: var(--scad3d-ink);
    border: 2px solid var(--scad3d-ink);
    box-shadow: 0 4px 0 var(--scad3d-ink);
}

/* Bottom Floating Viewbar — Responsive on Desktop & Mobile */
.scad3d-viewbar {
    background-color: #ffffff !important;
    border: 2px solid #0f172a !important;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.22), 0 3px 0 #0f172a !important;
    max-width: calc(100% - 0.75rem);
    white-space: nowrap;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.scad3d-vb-sep {
    background-color: #cbd5e1 !important;
    width: 1.5px !important;
    opacity: 0.95;
}

.scad3d-vb-btn {
    color: #0f172a !important;
    background-color: #f1f5f9;
    border: 1.5px solid #cbd5e1;
    font-weight: 800;
    transition: all 0.14s ease;
}

.scad3d-vb-btn:hover {
    background-color: #e2e8f0;
    border-color: #94a3b8;
}

.scad3d-vb-btn.is-active {
    background-color: #0f172a !important;
    color: #ffffff !important;
    border-color: #0f172a !important;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.35);
}

/* Split Mode Ultra-Compact Responsive Toolbars (prevents collision between 2D canvas controls & 3D viewbar) */
main.scad-3d-split-active #canvas-controls {
    padding: 2px 5px !important;
    gap: 2.5px !important;
    max-width: calc(100% - 12px) !important;
    right: 6px !important;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important;
    border-radius: 12px !important;
}

main.scad-3d-split-active #canvas-controls span.hidden.sm\:inline,
main.scad-3d-split-active #canvas-controls span.hidden.md\:inline,
main.scad-3d-split-active #canvas-controls #marquee-select-tool-btn span,
main.scad-3d-split-active #canvas-controls #smart-wire-color-btn span,
main.scad-3d-split-active #canvas-controls #wire-curve-tool-btn span,
main.scad-3d-split-active #canvas-controls .btn-label {
    display: none !important;
}

main.scad-3d-split-active #canvas-controls button,
main.scad-3d-split-active #canvas-controls #marquee-select-tool-btn,
main.scad-3d-split-active #canvas-controls #smart-wire-color-btn,
main.scad-3d-split-active #canvas-controls #wire-curve-tool-btn {
    padding: 2px 5px !important;
    min-height: 24px !important;
}

main.scad-3d-split-active .scad3d-viewbar {
    padding: 2.5px 5px !important;
    gap: 2.5px !important;
    max-width: calc(100% - 12px) !important;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important;
    border-radius: 12px !important;
}

main.scad-3d-split-active .scad3d-viewbar #scad3d-drag-mode-label,
main.scad-3d-split-active .scad3d-viewbar .scad3d-btn-label {
    display: none !important;
}

main.scad-3d-split-active .scad3d-vb-btn {
    padding: 2.5px 5px !important;
    font-size: 10px !important;
    min-height: 24px !important;
}

/* Mobile-specific Viewbar & Callout fitting */
@media (max-width: 639px) {
    .scad3d-viewbar {
        bottom: 8px !important;
        padding: 4px 8px !important;
        gap: 3px !important;
        border-width: 2px !important;
        box-shadow: 0 3px 10px rgba(15, 23, 42, 0.25), 0 2px 0 var(--scad3d-ink, #162436) !important;
        max-width: calc(100vw - 12px) !important;
    }
    .scad3d-vb-btn {
        font-size: 10px !important;
        line-height: 1 !important;
    }
    #scad3d-drag-mode-btn {
        padding: 4px 7px !important;
    }
    #scad3d-reset-cam {
        padding: 4px 6px !important;
    }
    #scad3d-flow-btn,
    #scad3d-labels-btn {
        padding: 4px 6px !important;
    }
    .scad3d-vb-sep {
        margin: 0 1px !important;
        height: 14px !important;
    }
    #scad3d-callout {
        top: 6px !important;
        right: 6px !important;
        width: min(215px, calc(100vw - 16px)) !important;
        padding: 8px 10px !important;
    }
}

/* Floating Projected 3D Labels — Google Maps Style Responsive & Decluttered */
#scad-3d-canvas-host,
#scad-3d-labels-layer {
    direction: ltr !important;
}

#scad-3d-canvas-host canvas {
    display: block !important;
    width: 100% !important;
    height: 100% !important;
}

.scad3d-leaders-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: visible;
    z-index: 42;
}

.scad3d-pin-label {
    position: absolute;
    transform-origin: 50% 100%;
    transform: translate(-50%, -100%) scale(1);
    background-color: #ffffff;
    background-color: var(--scad3d-surface, #ffffff);
    color: var(--scad3d-ink, #162436);
    border: 1.5px solid var(--scad3d-ink, #162436);
    border-radius: 9999px;
    padding: 2.5px 9px;
    font-size: 10.5px;
    font-weight: 800;
    white-space: nowrap;
    box-shadow: 0 2.5px 0 var(--scad3d-ink, #162436), 0 4px 10px rgba(15, 23, 42, 0.14);
    pointer-events: auto;
    cursor: pointer;
    user-select: none;
    direction: rtl;
    transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
    display: flex;
    align-items: center;
    gap: 4px;
    z-index: 50;
}

/* Subtle downward anchor pointer pin stem directly targeting the 3D model */
.scad3d-pin-label::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4.5px solid transparent;
    border-right: 4.5px solid transparent;
    border-top: 5px solid var(--scad3d-ink);
    transition: border-top-color 0.15s ease;
}

/* Hide downward arrow when smart collision solver displaces the pill and draws an SVG leader line */
.scad3d-pin-label.is-displaced::after {
    display: none !important;
}

.scad3d-pin-label:hover {
    background-color: var(--scad3d-surface-hover);
    border-color: #0284c7;
    z-index: 80 !important;
}

.scad3d-pin-label.is-selected {
    background-color: #0f172a !important;
    color: #38bdf8 !important;
    border-color: #38bdf8 !important;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.55), 0 2.5px 0 #0284c7 !important;
    z-index: 100 !important;
}

.scad3d-pin-label.is-selected::after {
    border-top-color: #38bdf8 !important;
}