/* ---- Buttons recoloured to the page --primary ------------------------- */
.btn-primary {
    --bs-btn-bg: var(--primary);
    --bs-btn-border-color: var(--primary);
    --bs-btn-hover-bg: var(--primary-dark);
    --bs-btn-hover-border-color: var(--primary-dark);
    --bs-btn-active-bg: var(--primary-dark);
    --bs-btn-active-border-color: var(--primary-dark);
    --bs-btn-disabled-bg: var(--primary);
    --bs-btn-disabled-border-color: var(--primary);
}

/* ---- Cards ------------------------------------------------------------ */
.control-card {
    border: none;
    border-radius: 14px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
    background-color: #ffffff;
}
body.dark .control-card {
    background-color: #3c3c3c;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}
.card-title {
    color: var(--primary-dark);
    font-weight: 900;
}
body.dark .card-title {
    color: var(--primary-light);
}

/* ---- Sliders ---------------------------------------------------------- */
.slider-row {
    margin-bottom: 0.6rem;
}
.slider-row > label {
    display: block;
    font-weight: 700;
    margin-bottom: -0.4rem;
}
.slider-row .unit {
    font-weight: 400;
    color: #888;
    font-size: 0.85em;
}
.slider-line {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.slider-line input[type='range'] {
    flex: 1 1 auto;
}
.num-input {
    flex: 0 0 5rem;
    width: 5rem;
    border-radius: 8px;
    border: 2px solid var(--primary-light);
    background: transparent;
    color: inherit;
    text-align: center;
    padding: 2px 4px;
    font-weight: 700;
}
.num-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* remnant type badge */
#remnant-type {
    background-color: var(--primary);
    color: white;
    font-size: 0.7em;
    vertical-align: middle;
}

/* ---- Model sub-parameters (shown/hidden per model) -------------------- */
.model-param {
    display: none;
}
.model-param.show {
    display: block;
}

/* ---- Educational content (intro + questions accordions) -------------- */
.intro-accordion .accordion-item,
.questions-accordion .accordion-item {
    margin-bottom: 0.5rem;
}
.intro-accordion .accordion-button,
.questions-accordion .accordion-button {
    border-radius: 10px;
    font-size: 1.05rem;
}
.intro-accordion .accordion-button.collapsed,
.questions-accordion .accordion-button.collapsed {
    border-radius: 10px;
}
.intro-accordion .accordion-body,
.questions-accordion .accordion-body {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 0 0 10px 10px;
    margin-top: -6px;
    padding-top: 1rem;
}
body.dark .intro-accordion .accordion-body,
body.dark .questions-accordion .accordion-body {
    background: rgba(255, 255, 255, 0.04);
}
/* give MathJax display equations room to breathe */
.intro-accordion .accordion-body .MathJax_Display,
.questions-accordion .accordion-body .MathJax_Display {
    margin: 0.8rem 0 !important;
}
.reference-list li {
    margin-bottom: 0.3rem;
}

/* ---- View-mode selector ---------------------------------------------- */
.view-mode-group {
    width: 100%;
}
.view-mode-group .btn {
    flex: 1 1 0;
}

/* ---- 3D viewport ------------------------------------------------------ */
#viz-wrapper {
    position: relative;
    width: 100%;
}

/* phase labels + split divider overlaid on the canvas */
.viz-phase-label {
    position: absolute;
    top: 10px;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    padding: 2px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    pointer-events: none;
    z-index: 3;
    white-space: nowrap;
}
.viz-divider {
    position: absolute;
    background: rgba(255, 255, 255, 0.22);
    z-index: 3;
    pointer-events: none;
    display: none;
}
#viz-canvas {
    width: 100%;
    aspect-ratio: 1.4;
    min-height: 320px;
    border-radius: 12px;
    overflow: hidden;
    background: radial-gradient(ellipse at center, #10131c 0%, #05060a 100%);
    cursor: grab;
    touch-action: none;
}
#viz-canvas:active {
    cursor: grabbing;
}
#viz-canvas canvas {
    display: block;
}
#viz-controls {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 6px;
}
#viz-controls .btn {
    background: rgba(255, 255, 255, 0.85);
}
#blaauw-switch {
    position: absolute;
    left: 14px;
    bottom: 10px;
    color: #e6e6e6;
    background: rgba(0, 0, 0, 0.35);
    padding: 2px 10px 2px 34px;
    border-radius: 8px;
}
#blaauw-switch .form-check-input {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}
#blaauw-switch .form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* legend under the viewport */
#viz-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    justify-content: center;
}
.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-block;
}
.legend-line {
    width: 18px;
    height: 3px;
    border-radius: 2px;
    display: inline-block;
}
.legend-cross {
    display: inline-block;
    width: 14px;
    text-align: center;
    font-weight: 900;
    line-height: 1;
}

/* scale bar(s) overlaid on the 3D viewport (size of each panel in solar radii) */
.viz-scalebar {
    position: absolute;
    right: 12px;
    bottom: 10px;
    z-index: 3;
    pointer-events: none;
    text-align: center;
    color: #e9edf5;
}
.viz-scalebar .sb-text {
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 3px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
    letter-spacing: 0.02em;
}
.viz-scalebar .sb-bar {
    height: 7px;
    margin-left: auto;
    border: 2px solid rgba(233, 237, 245, 0.9);
    border-top: none;
    box-sizing: border-box;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

/* ---- Results ---------------------------------------------------------- */
#status-badge.bound {
    background-color: #2e7d5b;
    color: white;
}
#status-badge.disrupted {
    background-color: var(--primary-dark);
    color: white;
}
.result-tile {
    background: rgba(0, 0, 0, 0.04);
    border-radius: 10px;
    padding: 0.5rem 0.25rem;
    height: 100%;
}
body.dark .result-tile {
    background: rgba(255, 255, 255, 0.06);
}
.result-value {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--primary-dark);
    line-height: 1.15;
}
body.dark .result-value {
    color: var(--primary-light);
}
.result-label {
    font-size: 0.78rem;
    color: #888;
}
.result-tile-wide {
    background: rgba(0, 0, 0, 0.04);
    border-radius: 10px;
    padding: 0.7rem 0.9rem;
}
body.dark .result-tile-wide {
    background: rgba(255, 255, 255, 0.06);
}

/* systemic velocity decomposition */
.decomp-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    padding: 1px 0;
}
.decomp-bar {
    display: flex;
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    margin: 4px 0;
    background: rgba(0, 0, 0, 0.08);
}
.bar {
    height: 100%;
    transition: width 250ms ease;
}
.bar-blaauw {
    background: #4c8fc0;
}
.bar-kick {
    background: var(--primary);
}
.swatch {
    display: inline-block;
    width: 11px;
    height: 11px;
    border-radius: 3px;
    margin-right: 5px;
    vertical-align: baseline;
}
.swatch-blaauw {
    background: #4c8fc0;
}
.swatch-kick {
    background: var(--primary);
}
.swatch-remnant {
    background: #7fb4ff;
    border-radius: 50%;
}
.swatch-companion {
    background: #ffd25a;
    border-radius: 50%;
}
.swatch-star {
    background: #ffb066;
    border-radius: 50%;
}

@media (max-width: 1199.98px) {
    #viz-canvas {
        aspect-ratio: 1.6;
    }
}