/* =====================================================================
   Western Blot module layout. Consumes tokens/primitives from theme.css.
   Shared bits (module tabs, result tabs, charts, tables) live in
   theme.css / qpcr-style.css. Class & id hooks unchanged.
   ===================================================================== */

/* ---------- WB three-column layout ---------- */
.wb-content {
    display: grid;
    grid-template-columns: minmax(260px, 300px) minmax(0, 1fr) minmax(320px, 400px);
    gap: 16px;
    align-items: start;
    animation: qb-module-in var(--dur-slow) var(--ease-out);
}

.wb-left,
.wb-center,
.wb-right {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

/* ---------- Edit-mode segmented control ---------- */
.wb-mode-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
    padding: 4px;
    background: var(--surface-3);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
}

.wb-mode-btn {
    min-height: 42px;
    padding: 8px 6px;
    background: transparent;
    border-radius: var(--r-xs);
    color: var(--text-soft);
    cursor: pointer;
    font-size: var(--fs-base);
    font-weight: 700;
    transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
        box-shadow var(--dur-fast) var(--ease);
}

.wb-mode-btn:hover {
    color: var(--text);
}

.wb-mode-btn.is-active {
    background: var(--surface);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.wb-hint {
    margin: 10px 0;
    color: var(--text-faint);
    font-size: var(--fs-sm);
    line-height: 1.45;
}

.wb-tool-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

/* ---------- Canvas toolbar ---------- */
.wb-canvas-toolbar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.wb-zoom {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-soft);
    font-size: var(--fs-sm);
    font-weight: 700;
}

.wb-zoom input[type="range"] {
    width: 120px;
}

.wb-zoom .range-val {
    min-width: 36px;
    text-align: right;
}

.wb-mode-indicator {
    padding: 5px 11px;
    background: var(--primary-soft);
    border: 1px solid var(--primary-border);
    border-radius: var(--r-pill);
    color: var(--primary);
    font-size: var(--fs-sm);
    font-weight: 800;
    white-space: nowrap;
}

.wb-selection-bar {
    display: flex;
    min-height: 44px;
    align-items: center;
    gap: 10px;
    margin: 12px 0 8px;
    padding: 9px 12px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    color: var(--text-soft);
    transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.wb-selection-bar strong {
    color: var(--text);
    font-size: var(--fs-base);
    white-space: nowrap;
}

.wb-selection-bar span {
    min-width: 0;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.wb-selection-bar.has-selection {
    background: var(--warning-soft);
    border-color: var(--warning-border);
}

/* ---------- Canvas ---------- */
.wb-canvas-wrap {
    position: relative;
    overflow: auto;
    max-height: min(62vh, 480px);
    padding: 12px;
    background: var(--canvas-surround);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background-image:
        linear-gradient(45deg, rgba(128, 128, 128, 0.06) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(128, 128, 128, 0.06) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(128, 128, 128, 0.06) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(128, 128, 128, 0.06) 75%);
    background-size: 18px 18px;
    background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}

#wbCanvas {
    display: block;
    max-width: 100%;
    background: #fff;
    border-radius: 4px;
    box-shadow: var(--shadow);
    touch-action: none;
}

#wbCanvas.mode-lane,
#wbCanvas.mode-band {
    cursor: crosshair;
}

#wbCanvas.mode-select {
    cursor: default;
}

#wbCanvas.mode-pan {
    cursor: grab;
}

#wbCanvas.is-panning {
    cursor: grabbing;
}

.wb-canvas-empty {
    min-height: 260px;
}

.wb-canvas-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 12px;
    color: var(--text-soft);
    font-size: var(--fs-base);
}

.wb-canvas-legend span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.wb-canvas-tip {
    margin-left: auto;
    color: var(--text-faint);
    font-size: var(--fs-sm);
}

.legend-box {
    width: 16px;
    height: 12px;
    border-radius: 3px;
}

.lane-box {
    background: rgba(37, 99, 235, 0.14);
    border: 1.5px solid #2563eb;
}

.band-box {
    background: rgba(16, 185, 129, 0.16);
    border: 1.5px solid #0f9d68;
}

.selected-box {
    background: rgba(217, 119, 6, 0.18);
    border: 1.5px solid #d97706;
}

/* ---------- Lane metadata table ---------- */
.wb-meta-scroll {
    overflow: auto;
    max-height: 360px;
    border-radius: var(--r-sm);
}

.wb-meta-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-base);
}

.wb-meta-table th,
.wb-meta-table td {
    padding: 6px 8px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    white-space: nowrap;
}

.wb-meta-table th {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--surface-3);
    color: var(--text-soft);
    font-weight: 800;
}

.wb-meta-table tbody tr {
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease);
}

.wb-meta-table tbody tr:hover td {
    background: var(--surface-2);
}

.wb-meta-table tr.is-selected td {
    background: var(--warning-soft);
}

.wb-meta-table input {
    width: 100%;
    min-width: 72px;
    min-height: 32px;
    padding: 5px 8px;
    background: var(--surface-inset);
    border: 1px solid var(--line);
    border-radius: var(--r-xs);
    color: var(--text);
    font: inherit;
    transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.wb-meta-table input:hover {
    border-color: var(--line-strong);
}

.wb-meta-table input:focus-visible {
    border-color: var(--primary);
    box-shadow: var(--ring);
}

.wb-meta-table input.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 2px var(--danger-soft);
}

.wb-meta-table .lane-tag {
    font-weight: 800;
    color: var(--primary);
}

.wb-select-link {
    display: inline-grid;
    min-width: 30px;
    min-height: 30px;
    place-items: center;
    padding: 4px 7px;
    background: var(--primary-soft);
    border: 1px solid var(--primary-border);
    border-radius: var(--r-xs);
    color: var(--primary);
    cursor: pointer;
    font-weight: 800;
    transition: transform var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}

.wb-select-link:hover {
    transform: translateY(-1px);
    background: var(--surface);
}

.wb-band-link {
    background: var(--success-soft);
    border-color: var(--success-border);
    color: var(--success);
}

.wb-meta-empty {
    padding: 18px;
    color: var(--text-faint);
    font-size: var(--fs-base);
    text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 1450px) {
    .wb-content {
        grid-template-columns: minmax(260px, 300px) minmax(0, 1fr);
    }

    .wb-right {
        grid-column: 1 / -1;
    }
}

@media (max-width: 980px) {
    .wb-content {
        grid-template-columns: 1fr;
    }

    .module-tabs {
        flex-direction: column;
    }

    .wb-canvas-toolbar {
        width: 100%;
    }

    .wb-zoom {
        width: 100%;
    }

    .wb-zoom input[type="range"] {
        flex: 1;
        width: auto;
    }

    .wb-canvas-wrap {
        max-height: 58dvh;
        padding: 8px;
    }

    .wb-mode-btn,
    .wb-tool-actions .btn,
    .wb-canvas-toolbar .btn,
    .wb-select-link {
        min-height: 44px;
    }

    .wb-selection-bar {
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
    }

    .wb-selection-bar span {
        width: 100%;
    }

    .wb-canvas-tip {
        width: 100%;
        margin-left: 0;
    }
}

@media (max-width: 560px) {
    .wb-mode-group {
        grid-template-columns: 1fr 1fr;
    }

    .wb-canvas-legend {
        gap: 10px;
    }
}