/* ============================================================
   Threshold Studio — drag-and-drop entryway designer
   Apple Liquid Glass design system, scoped under #threshold-studio
   Uses existing apple-polish tokens (--accent, --ink, --surface, etc.)
   ============================================================ */

#threshold-studio {
    --ts-grid-line: color-mix(in oklab, var(--ink) 9%, transparent);
    --ts-grid-major: color-mix(in oklab, var(--ink) 16%, transparent);
    --ts-glass: color-mix(in oklab, var(--surface) 70%, transparent);
    --ts-glass-strong: color-mix(in oklab, var(--surface) 86%, transparent);
    --ts-edge: color-mix(in oklab, #fff 40%, var(--hairline));
    --ts-door: color-mix(in oklab, var(--accent) 70%, var(--ink));
}
[data-theme="dark"] #threshold-studio {
    --ts-edge: color-mix(in oklab, #fff 14%, var(--hairline));
    --ts-door: color-mix(in oklab, var(--accent) 78%, #fff);
}

.ts-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 22px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.ts-head .builder-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}
.ts-head .builder-kicker .glyph { font-size: 16px; }
.ts-head h2 {
    font-size: clamp(28px, 4vw, 44px);
    letter-spacing: -0.035em;
    line-height: 1.06;
    margin-bottom: 12px;
}
.ts-head p {
    color: var(--ink-3);
    max-width: 56ch;
    font-size: 17px;
}

/* Live running total capsule */
.ts-total {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    padding: 14px 22px;
    border-radius: var(--radius-lg);
    background:
        linear-gradient(165deg,
            color-mix(in oklab, var(--surface) 92%, transparent),
            color-mix(in oklab, var(--bg) 66%, transparent) 48%,
            var(--accent-soft));
    border: 1px solid var(--ts-edge);
    box-shadow:
        inset 0 1px 0 color-mix(in oklab, #fff 64%, transparent),
        var(--shadow-2);
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    white-space: nowrap;
}
.ts-total span {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--ink-3);
}
.ts-total b {
    font-size: 30px;
    font-weight: 760;
    letter-spacing: -0.03em;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
}
.ts-total .ts-total-meta {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: none;
    letter-spacing: 0;
}

/* Main layout: rail + stage */
.ts-layout {
    display: grid;
    grid-template-columns: 268px 1fr;
    gap: 22px;
    align-items: start;
}
@media (max-width: 980px) {
    .ts-layout { grid-template-columns: 1fr; }
}

/* Left rail — glass panel of draggable SKU chips */
.ts-rail {
    position: sticky;
    top: 84px;
    border-radius: var(--radius-lg);
    padding: 18px;
    background: var(--ts-glass);
    border: 1px solid var(--ts-edge);
    box-shadow:
        inset 0 1px 0 color-mix(in oklab, #fff 56%, transparent),
        var(--shadow-2);
    backdrop-filter: blur(26px) saturate(1.7);
    -webkit-backdrop-filter: blur(26px) saturate(1.7);
}
@media (max-width: 980px) {
    .ts-rail { position: static; }
}
.ts-rail h3 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 4px;
}
.ts-rail .ts-rail-hint {
    font-size: 12.5px;
    color: var(--ink-4);
    margin-bottom: 14px;
    line-height: 1.4;
}
.ts-chips { display: grid; gap: 8px; }

.ts-chip {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 11px 13px;
    border-radius: var(--radius);
    background: var(--ts-glass-strong);
    border: 1px solid var(--hairline);
    box-shadow: inset 0 1px 0 color-mix(in oklab, #fff 46%, transparent);
    cursor: grab;
    user-select: none;
    touch-action: none;
    transition:
        transform var(--t-fast) var(--ease-spring),
        box-shadow var(--t-fast) var(--ease),
        border-color var(--t-fast) var(--ease);
}
.ts-chip:hover {
    transform: translateY(-2px);
    border-color: color-mix(in oklab, var(--accent) 46%, var(--hairline));
    box-shadow:
        inset 0 1px 0 color-mix(in oklab, #fff 56%, transparent),
        0 10px 22px -14px color-mix(in oklab, var(--accent) 64%, transparent);
}
.ts-chip.ts-dragging { opacity: 0.4; }
.ts-chip-icon {
    width: 34px; height: 34px;
    flex: 0 0 auto;
    display: grid; place-items: center;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 18px;
}
.ts-chip-text { min-width: 0; }
.ts-chip-name {
    font-size: 13.5px; font-weight: 600;
    color: var(--ink);
    line-height: 1.18;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ts-chip-price {
    font-size: 12px; color: var(--ink-4);
    font-variant-numeric: tabular-nums;
}

/* Stage column */
.ts-stage-col { min-width: 0; }

/* Toolbar above canvas */
.ts-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.ts-tool {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 14px;
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 560;
    cursor: pointer;
    color: var(--ink-2);
    background: var(--ts-glass-strong);
    border: 1px solid var(--hairline);
    box-shadow: inset 0 1px 0 color-mix(in oklab, #fff 46%, transparent);
    backdrop-filter: blur(16px) saturate(1.5);
    -webkit-backdrop-filter: blur(16px) saturate(1.5);
    transition: transform var(--t-fast) var(--ease-spring),
        border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
        background var(--t-fast) var(--ease);
}
.ts-tool:hover {
    transform: translateY(-1px);
    border-color: color-mix(in oklab, var(--accent) 44%, var(--hairline));
    color: var(--ink);
}
.ts-tool .glyph { font-size: 15px; }
.ts-tool.ts-tool-primary {
    background: var(--accent);
    color: #fff;
    border-color: transparent;
}
.ts-tool.ts-tool-primary:hover { background: var(--accent-press); color: #fff; }
.ts-tool input[type="file"] { display: none; }
.ts-tool-spacer { flex: 1 1 auto; }

.ts-view-toggle {
    display: inline-flex;
    padding: 3px;
    border-radius: 999px;
    background: var(--ts-glass-strong);
    border: 1px solid var(--hairline);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
.ts-view-toggle button {
    border: 0; background: transparent;
    padding: 7px 14px; border-radius: 999px;
    font-size: 13px; font-weight: 560; cursor: pointer;
    color: var(--ink-3); font-family: inherit;
    transition: color var(--t-fast) var(--ease);
}
.ts-view-toggle button[aria-pressed="true"] {
    background: var(--accent); color: #fff;
    box-shadow: 0 2px 8px -2px color-mix(in oklab, var(--accent) 70%, transparent);
}

/* Canvas wrap */
.ts-stage {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background:
        radial-gradient(120% 90% at 50% -10%, var(--accent-soft), transparent 60%),
        var(--ts-glass);
    border: 1px solid var(--ts-edge);
    box-shadow:
        inset 0 1px 0 color-mix(in oklab, #fff 50%, transparent),
        var(--shadow-3);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    touch-action: none;
}
.ts-canvas {
    display: block;
    width: 100%;
    height: auto;
    cursor: crosshair;
}
.ts-canvas.ts-grabbing { cursor: grabbing; }

/* Calibration / scale strip below toolbar */
.ts-scale {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding: 10px 14px;
    border-radius: var(--radius);
    background: var(--ts-glass);
    border: 1px solid var(--hairline);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    font-size: 13px;
    color: var(--ink-3);
    flex-wrap: wrap;
}
.ts-scale label { font-weight: 600; color: var(--ink-2); white-space: nowrap; }
.ts-scale input[type="range"] { flex: 1 1 160px; min-width: 120px; accent-color: var(--accent); }
.ts-scale .ts-scale-val {
    font-variant-numeric: tabular-nums;
    font-weight: 700; color: var(--ink);
    white-space: nowrap;
}

/* Bottom collision-warning pill */
.ts-warning {
    position: absolute;
    left: 50%;
    bottom: 16px;
    transform: translate(-50%, 140%);
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 11px 18px;
    border-radius: 999px;
    background: color-mix(in oklab, var(--accent) 92%, #000);
    color: #fff;
    font-size: 13.5px;
    font-weight: 560;
    box-shadow: 0 16px 34px -16px color-mix(in oklab, var(--accent) 90%, transparent);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--t-med) var(--ease-spring), opacity var(--t-med) var(--ease);
    max-width: min(90%, 520px);
    text-align: left;
}
.ts-warning.ts-show {
    transform: translate(-50%, 0);
    opacity: 1;
}
.ts-warning .glyph { font-size: 16px; flex: 0 0 auto; }

/* Empty hint overlay (no objects placed yet) */
.ts-empty {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    text-align: center;
    pointer-events: none;
    transition: opacity var(--t-med) var(--ease);
    padding: 24px;
}
.ts-empty.ts-hidden { opacity: 0; }
.ts-empty-inner {
    max-width: 320px;
    color: var(--ink-3);
}
.ts-empty-inner .ts-empty-glyph {
    font-size: 40px; color: var(--accent);
    margin-bottom: 12px; opacity: 0.85;
}
.ts-empty-inner b { color: var(--ink); display: block; font-size: 18px; margin-bottom: 6px; letter-spacing: -0.02em; }
.ts-empty-inner span { font-size: 14px; line-height: 1.45; }

/* Selected-object inspector chip */
.ts-inspector {
    position: absolute;
    top: 14px; left: 14px;
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 12px 15px;
    border-radius: var(--radius);
    background: var(--ts-glass-strong);
    border: 1px solid var(--ts-edge);
    box-shadow: inset 0 1px 0 color-mix(in oklab, #fff 50%, transparent), var(--shadow-2);
    backdrop-filter: blur(22px) saturate(1.6);
    -webkit-backdrop-filter: blur(22px) saturate(1.6);
    max-width: 220px;
}
.ts-inspector.ts-show { display: flex; }
.ts-inspector .ts-insp-name { font-size: 13.5px; font-weight: 700; color: var(--ink); }
.ts-inspector .ts-insp-dims { font-size: 12px; color: var(--ink-4); font-variant-numeric: tabular-nums; }
.ts-inspector .ts-insp-actions { display: flex; gap: 7px; margin-top: 6px; }
.ts-inspector button {
    border: 1px solid var(--hairline);
    background: transparent;
    color: var(--ink-2);
    border-radius: 8px;
    padding: 4px 10px;
    font-size: 12px; font-weight: 560; cursor: pointer;
    font-family: inherit;
    transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.ts-inspector button:hover { color: var(--accent); border-color: var(--accent); }
.ts-inspector button.ts-insp-del:hover { color: #fff; background: var(--accent); border-color: var(--accent); }

/* Parts list under the stage */
.ts-parts {
    margin-top: 22px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 18px;
    align-items: start;
}
@media (max-width: 720px) { .ts-parts { grid-template-columns: 1fr; } }
.ts-parts-card {
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    background: var(--ts-glass);
    border: 1px solid var(--ts-edge);
    box-shadow: inset 0 1px 0 color-mix(in oklab, #fff 50%, transparent), var(--shadow-2);
    backdrop-filter: blur(22px) saturate(1.5);
    -webkit-backdrop-filter: blur(22px) saturate(1.5);
}
.ts-parts-card h4 {
    font-size: 12px; font-weight: 700; letter-spacing: 0.03em;
    text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px;
}
.ts-parts-list { display: grid; gap: 8px; list-style: none; }
.ts-parts-list li {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; padding: 8px 0;
    border-bottom: 1px solid var(--hairline-soft);
    font-size: 14px; color: var(--ink-2);
}
.ts-parts-list li:last-child { border-bottom: 0; }
.ts-parts-list .ts-part-name { display: flex; align-items: center; gap: 9px; }
.ts-parts-list .ts-part-qty {
    display: inline-grid; place-items: center;
    min-width: 22px; height: 22px; padding: 0 6px;
    border-radius: 7px; background: var(--accent-soft); color: var(--accent);
    font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums;
}
.ts-parts-list .ts-part-price { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--ink); }
.ts-parts-empty { color: var(--ink-4); font-size: 14px; }

.ts-summary {
    border-radius: var(--radius-lg);
    padding: 20px;
    min-width: 240px;
    background:
        linear-gradient(165deg,
            color-mix(in oklab, var(--accent) 16%, var(--surface)),
            color-mix(in oklab, var(--surface) 88%, transparent));
    border: 1px solid var(--ts-edge);
    box-shadow: inset 0 1px 0 color-mix(in oklab, #fff 48%, transparent), var(--shadow-2);
    backdrop-filter: blur(22px) saturate(1.5);
    -webkit-backdrop-filter: blur(22px) saturate(1.5);
}
.ts-summary .ts-sum-row {
    display: flex; justify-content: space-between; align-items: baseline;
    font-size: 14px; color: var(--ink-3); margin-bottom: 8px;
}
.ts-summary .ts-sum-row b { color: var(--ink); font-variant-numeric: tabular-nums; }
.ts-summary .ts-sum-total {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-top: 14px; padding-top: 14px;
    border-top: 1px solid var(--hairline);
}
.ts-summary .ts-sum-total span { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.ts-summary .ts-sum-total b { font-size: 28px; font-weight: 760; letter-spacing: -0.03em; color: var(--ink); font-variant-numeric: tabular-nums; }
.ts-summary .ts-send {
    width: 100%; margin-top: 16px;
    border: 0; border-radius: var(--radius);
    background: var(--accent); color: #fff;
    padding: 13px; font-size: 15px; font-weight: 640; cursor: pointer;
    font-family: inherit;
    box-shadow: 0 10px 24px -10px color-mix(in oklab, var(--accent) 80%, transparent);
    transition: background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease-spring);
}
.ts-summary .ts-send:hover { background: var(--accent-press); transform: translateY(-1px); }
.ts-summary .ts-send:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .ts-chip, .ts-tool, .ts-warning, .ts-empty, .ts-send { transition: none !important; }
}