:root {
    color-scheme: dark;
    --bg-primary: #080c14;
    --bg-secondary: #0f172a;
    --bg-panel: rgba(17, 24, 39, 0.88);
    --bg-input: #060911;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-cyan: #38bdf8;
    --accent-indigo: #818cf8;
    --accent-amber: #f59e0b;
    --accent-emerald: #10b981;

    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-active: rgba(56, 189, 248, 0.45);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    color-scheme: dark;
}

/* Inline code pill for backtick-enclosed text in labels, headers, and tooltips (v2.2 refined spacing) */
code,
.inline-code-pill {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.86em;
    line-height: 1.25;
    background: rgba(56, 189, 248, 0.13);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.28);
    padding: 0.04rem 0.3rem;
    margin: 0.1rem 0.14rem;
    border-radius: 4px;
    font-weight: 500;
    vertical-align: baseline;
}

.workstation {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Top Bar */
.studio-topbar {
    height: 58px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-shrink: 0;
}

.brand-cluster {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.brand-badge {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.studio-title {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.02rem;
    letter-spacing: -0.02em;
}

.studio-tag {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--accent-cyan);
}

.topbar-center-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ctrl-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    padding: 0.28rem 0.6rem;
    border-radius: 7px;
    font-size: 0.76rem;
    color: var(--text-secondary);
}

/* Dark dropdown fix for Color Map (#colorMapSelect) and all <select>/<option> elements (v2.1) */
select,
#colorMapSelect,
.ctrl-pill select,
.sim-speed-select,
.field-group select {
    background-color: #060911;
    color: #f8fafc;
    color-scheme: dark;
}

.ctrl-pill select,
#colorMapSelect {
    background-color: #060911;
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 5px;
    padding: 0.16rem 0.42rem;
    color: #f8fafc;
    font-size: 0.76rem;
    font-weight: 600;
    outline: none;
    cursor: pointer;
}

select option,
#colorMapSelect option,
.ctrl-pill select option,
.sim-speed-select option,
.field-group select option {
    background-color: #0f172a;
    color: #f8fafc;
}

select option:checked,
select option:hover,
#colorMapSelect option:checked,
#colorMapSelect option:hover {
    background-color: #1e293b;
    color: #38bdf8;
}

.btn-chip {
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    padding: 0.34rem 0.68rem;
    border-radius: 7px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-chip.active,
.btn-chip:hover {
    color: var(--accent-cyan);
    border-color: var(--border-active);
    background: rgba(56, 189, 248, 0.1);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    padding: 0.45rem 0.85rem;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
}

.btn-accent {
    background: rgba(56, 189, 248, 0.16);
    color: var(--accent-cyan);
    border: 1px solid rgba(56, 189, 248, 0.45);
    padding: 0.45rem 0.95rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-accent:hover {
    background: rgba(56, 189, 248, 0.26);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    color: #fff;
    border: none;
    padding: 0.46rem 1rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

/* 3-Column Body — Full-height scrollable docks on all window sizes & Collapsible Panels (v2.2) */
.workstation-body {
    flex: 1 1 0%;
    height: calc(100vh - 58px);
    max-height: calc(100vh - 58px);
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr) 340px;
    grid-template-rows: minmax(0, 1fr);
    min-height: 0;
    overflow: hidden;
    transition: grid-template-columns 0.18s ease;
}

.workstation-body.left-collapsed {
    grid-template-columns: 0px minmax(0, 1fr) 340px;
}

.workstation-body.right-collapsed {
    grid-template-columns: 360px minmax(0, 1fr) 0px;
}

.workstation-body.left-collapsed.right-collapsed {
    grid-template-columns: 0px minmax(0, 1fr) 0px;
}

.workstation-body.left-collapsed .left-dock,
.workstation-body.right-collapsed .right-dock {
    padding: 0;
    border: none;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

.left-dock,
.right-dock {
    background: var(--bg-secondary);
    height: 100%;
    max-height: calc(100vh - 58px);
    min-height: 0;
    min-width: 0;
    overflow-y: scroll;
    overflow-x: hidden;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
    padding: 0.75rem 0.85rem 3rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.left-dock {
    border-right: 1px solid var(--border-subtle);
}

.right-dock {
    border-left: 1px solid var(--border-subtle);
}

.dock-collapse-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.25rem 0.35rem;
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    flex-shrink: 0;
}

.dock-bar-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

.dock-toggle-icon-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-input);
    color: var(--accent-cyan);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.dock-toggle-icon-btn:hover {
    background: rgba(56, 189, 248, 0.16);
    border-color: var(--border-active);
    transform: scale(1.04);
}

.dock-expand-floating-btn {
    position: absolute;
    top: 0.85rem;
    z-index: 30;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.42rem 0.7rem;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid rgba(56, 189, 248, 0.45);
    color: var(--accent-cyan);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
}

.dock-expand-floating-btn.left {
    left: 0.85rem;
}

.dock-expand-floating-btn.right {
    right: 0.85rem;
}

.dock-expand-floating-btn:hover {
    background: rgba(56, 189, 248, 0.2);
}

.hidden {
    display: none !important;
}

.param-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 0.85rem;
    flex-shrink: 0;
    min-width: 0;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.65rem;
    padding-bottom: 0.45rem;
    border-bottom: 1px solid var(--border-subtle);
}

.panel-header h3 {
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 600;
}

.badge-mini {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 0.1rem 0.42rem;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.12);
    color: var(--accent-cyan);
}

.badge-status {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    padding: 0.12rem 0.48rem;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.field-group {
    margin-bottom: 0.55rem;
    min-width: 0;
    max-width: 100%;
    position: relative;
    transition: opacity 0.15s ease;
}

.field-group[data-tooltip] {
    cursor: help;
}

.field-group label {
    display: block;
    font-size: 0.73rem;
    color: var(--text-secondary);
    margin-bottom: 0.26rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
    word-break: break-word;
    cursor: help;
}

.field-group input[type="number"],
.field-group input[type="text"],
.field-group input[type="password"],
.field-group select {
    width: 100%;
    min-width: 0;
    padding: 0.4rem 0.55rem;
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    outline: none;
}

/* Inert / Disabled Parameter Visual Hatching & Gray-out (v2.2) */
.field-group.is-disabled {
    opacity: 0.48;
}

.field-group.is-disabled label {
    color: var(--text-muted);
    text-decoration: line-through rgba(148, 163, 184, 0.45);
    cursor: not-allowed;
}

.field-group.is-disabled input,
.field-group.is-disabled select,
.field-group input:disabled,
.field-group select:disabled {
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(15, 23, 42, 0.85),
        rgba(15, 23, 42, 0.85) 6px,
        rgba(51, 65, 85, 0.48) 6px,
        rgba(51, 65, 85, 0.48) 12px
    ) !important;
    color: #64748b !important;
    border: 1px dashed rgba(148, 163, 184, 0.28) !important;
    cursor: not-allowed !important;
}

.field-group input:focus,
.field-group select:focus {
    border-color: var(--accent-cyan);
}

.field-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    min-width: 0;
}

.field-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.45rem;
    min-width: 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.76rem;
    padding-top: 0.2rem;
}

.checkbox-group input[type="checkbox"] {
    accent-color: var(--accent-cyan);
}

.upload-dropzone {
    border: 1px dashed rgba(56, 189, 248, 0.4);
    background: rgba(56, 189, 248, 0.05);
    border-radius: 8px;
    padding: 0.65rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
}

.upload-dropzone:hover {
    background: rgba(56, 189, 248, 0.11);
    border-color: var(--accent-cyan);
}

.upload-dropzone p {
    font-size: 0.76rem;
    color: var(--accent-cyan);
}

.upload-dropzone span {
    font-size: 0.68rem;
    color: var(--text-muted);
}

/* Center 3D Viewport Stage */
.viewport-stage {
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at center, #111a2e 0%, #060911 100%);
    min-width: 0;
    position: relative;
}

.canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#slicer3DCanvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: grab;
    user-select: none;
    touch-action: none;
}

#slicer3DCanvas:active {
    cursor: grabbing;
}

.hud-telemetry {
    position: absolute;
    top: 0.85rem;
    left: 0.85rem;
    background: rgba(8, 12, 20, 0.84);
    border: 1px solid var(--border-subtle);
    backdrop-filter: blur(8px);
    padding: 0.65rem 0.85rem;
    border-radius: 10px;
    font-size: 0.74rem;
    min-width: 245px;
    pointer-events: none;
}

.hud-title {
    font-family: var(--font-heading);
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--accent-amber);
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hud-row {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    margin-bottom: 0.16rem;
}

.hud-row strong {
    color: var(--text-primary);
}

.hud-legend {
    position: absolute;
    bottom: 0.85rem;
    right: 0.85rem;
    background: rgba(8, 12, 20, 0.84);
    border: 1px solid var(--border-subtle);
    padding: 0.4rem 0.7rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.legend-gradient {
    width: 110px;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, #38bdf8 0%, #34d399 50%, #f59e0b 80%, #ef4444 100%);
}

/* Scrubber Bar */
.scrubber-bar {
    height: 56px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.btn-play {
    background: rgba(245, 158, 11, 0.16);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.4);
    padding: 0.42rem 0.85rem;
    border-radius: 7px;
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.scrubber-slider-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.scrubber-meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-secondary);
}

#trajectoryScrubber {
    width: 100%;
    accent-color: var(--accent-cyan);
}

.sim-speed-select {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    font-size: 0.74rem;
    font-family: var(--font-mono);
}

/* Right Dock Metrics & Code Inspector */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.45rem;
}

.metric-card {
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: 7px;
    padding: 0.48rem 0.6rem;
}

.metric-label {
    display: block;
    font-size: 0.66rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.metric-val {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-primary);
}

.code-inspector-panel {
    flex: 1 0 320px;
    display: flex;
    flex-direction: column;
    min-height: 320px;
}

.inspector-tabs {
    display: flex;
    gap: 0.35rem;
    margin-bottom: 0.55rem;
}

.tab-btn {
    flex: 1;
    padding: 0.36rem;
    font-size: 0.74rem;
    font-weight: 600;
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    cursor: pointer;
}

.tab-btn.active {
    color: var(--accent-cyan);
    border-color: var(--border-active);
    background: rgba(56, 189, 248, 0.1);
}

#codeInspectorArea {
    flex: 1;
    width: 100%;
    background: var(--bg-input);
    color: #cbd5e1;
    border: 1px solid var(--border-subtle);
    border-radius: 7px;
    padding: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.45;
    resize: none;
    outline: none;
}

.inspector-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Floating Parameter Hover Tooltip (v2.2 with Visual SVG SlicingMode Diagrams) */
.slicer-param-tooltip {
    position: fixed;
    z-index: 9999;
    max-width: 340px;
    background: rgba(8, 12, 20, 0.97);
    color: var(--text-primary);
    border: 1px solid rgba(56, 189, 248, 0.5);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    padding: 0.65rem 0.8rem;
    border-radius: 10px;
    font-size: 0.74rem;
    line-height: 1.5;
    pointer-events: none;
}

.slicer-param-tooltip.rich-mode-tooltip {
    max-width: 470px;
    padding: 0.8rem 0.9rem;
}

.slicing-mode-guide-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.55rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.slicing-mode-cards-list {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.slicing-mode-card-item {
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 0.6rem;
    align-items: center;
    padding: 0.42rem 0.5rem;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid var(--border-subtle);
}

.slicing-mode-card-item.is-active-mode {
    border-color: rgba(56, 189, 248, 0.65);
    background: rgba(56, 189, 248, 0.1);
}

.mode-svg-box {
    width: 92px;
    height: 52px;
    border-radius: 6px;
    background: #060911;
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.mode-info-col {
    min-width: 0;
    font-size: 0.7rem;
    line-height: 1.38;
}

.mode-info-title {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.12rem;
}

.mode-active-pill {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    padding: 0.05rem 0.32rem;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.mode-info-desc {
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
}

.mode-info-tip {
    color: #fcd34d;
    font-size: 0.67rem;
}

.disabled-reason-note {
    display: block;
    margin-top: 0.35rem;
    padding-top: 0.35rem;
    border-top: 1px dashed rgba(248, 113, 113, 0.35);
    color: #fca5a5;
    font-size: 0.7rem;
}

/* User Profile & Login Modals (v2.2) */
.slicer-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: rgba(4, 7, 13, 0.78);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.slicer-modal-card {
    width: 100%;
    max-width: 560px;
    background: var(--bg-secondary);
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: 14px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75);
    padding: 1.25rem;
}

.slicer-modal-card.compact {
    max-width: 400px;
}

.slicer-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--border-subtle);
}

.slicer-modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    margin-top: 0.25rem;
}

.slicer-modal-body {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.slicer-modal-status {
    min-height: 1.2rem;
    font-size: 0.75rem;
    color: #34d399;
}

.slicer-modal-status.error {
    color: #f87171;
}

.slicer-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0.65rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.slicer-modal-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}