/* ============================================
   Sankey Diagram Builder - Specific Styles
   shared.css carries no component classes, so the panel, button and table
   styles live here. Readable text uses --text-secondary, never --text-muted.
   ============================================ */

.sankey-layout {
    display: grid;
    grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    min-width: 0;
}

.panel-header {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    margin-bottom: 4px;
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.diagram-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.result-status {
    min-height: 1.5em;
}

.result-status.unbalanced {
    color: var(--text-primary);
    font-weight: 600;
}

/* Form */
.input-group {
    margin-bottom: 16px;
}

.input-group label,
.check-group legend {
    display: block;
    margin-bottom: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.flow-text {
    min-height: 260px;
    resize: vertical;
    font-size: 0.8125rem;
    line-height: 1.6;
    white-space: pre;
    overflow-x: auto;
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
}

.check-group {
    border: 0;
    margin-bottom: 16px;
}

.check {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 32px;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
}

.check input {
    width: 18px;
    height: 18px;
    padding: 0;
    flex: none;
    accent-color: var(--accent-educational);
}

.helper-text {
    margin: 0 0 14px;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* Foldable notes */
.usage-note,
.advanced {
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.usage-note > summary,
.advanced > summary {
    min-height: 44px;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
}

.usage-note[open] > summary,
.advanced[open] > summary {
    border-bottom: 1px solid var(--border-color);
}

.usage-note > :not(summary),
.advanced > :not(summary) {
    margin-left: 14px;
    margin-right: 14px;
}

.usage-note > p {
    margin-bottom: 14px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.advanced h3 {
    margin: 16px 14px 10px;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
}

.advanced > .check {
    margin-bottom: 10px;
}

.syntax-list {
    margin-top: 12px;
    margin-bottom: 12px;
    font-size: 0.8125rem;
}

.syntax-list dt {
    margin-top: 8px;
}

.syntax-list dd {
    color: var(--text-secondary);
}

.syntax-list code,
.usage-note p code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Buttons */
.button-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tool-btn {
    min-height: 44px;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.tool-btn:hover:not(:disabled) {
    border-color: var(--accent-educational);
}

/* Dark ink on the green in both themes: white on it measures about 3.3:1. */
.tool-btn.primary {
    background: var(--accent-educational);
    border-color: var(--accent-educational);
    color: #0a0a0b;
}

.tool-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tool-btn:focus-visible,
.usage-note > summary:focus-visible,
.advanced > summary:focus-visible,
.diagram-scroll:focus-visible,
.table-scroll:focus-visible {
    outline: 2px solid var(--accent-educational);
    outline-offset: 2px;
}

/* Diagram */
.diagram-scroll {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    margin-bottom: 12px;
}

.diagram-host {
    min-height: 120px;
}

.diagram-host svg {
    display: block;
    width: 100%;
    min-width: 560px;
    height: auto;
}

/* Height handle under the diagram. touch-action lets a finger drag it instead of the page. */
.diagram-scroll:has(+ .resize-bar) {
    margin-bottom: 0;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.resize-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 28px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    border-top: 0;
    border-radius: 0 0 8px 8px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: ns-resize;
    touch-action: none;
    user-select: none;
}

.resize-bar:focus-visible {
    outline: 2px solid var(--accent-educational);
    outline-offset: 2px;
}

.resize-grip {
    width: 44px;
    height: 4px;
    border-radius: 2px;
    background: var(--text-secondary);
}

.sankey-link:hover {
    fill-opacity: 0.8;
}

.sankey-hairline:hover {
    stroke-width: 2;
}

/* Messages */
.message-box {
    margin-bottom: 14px;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 0.875rem;
}

.message-box h3 {
    font-size: 0.875rem;
    margin-bottom: 6px;
}

.message-box ul {
    padding-left: 18px;
    color: var(--text-primary);
}

.error-box {
    border: 1px solid var(--accent-error);
    background: var(--accent-error-dim);
}

.warning-box {
    border: 1px solid color-mix(in srgb, var(--accent-warning) 50%, transparent);
    background: var(--accent-warning-dim);
}

/* Tables */
.table-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr));
    gap: 16px;
}

.table-card {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.table-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.table-scroll {
    overflow-x: auto;
}

.totals {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 4px 16px;
    margin-bottom: 14px;
    font-size: 0.875rem;
}

.totals dt {
    color: var(--text-secondary);
}

.totals dd {
    font-family: 'JetBrains Mono', monospace;
    text-align: right;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

th,
td {
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

thead th {
    color: var(--text-secondary);
    font-weight: 600;
}

tbody th {
    font-weight: 600;
}

.num {
    text-align: right;
    font-family: 'JetBrains Mono', monospace;
}

tr.unbalanced {
    box-shadow: inset 3px 0 0 var(--accent-error);
}

tr.unbalanced .balance-status {
    font-weight: 600;
}

/* Status sits beside the name and wraps, so it is never scrolled out of view.
   Not named .status: shared.css styles that class as a 10px uppercase badge. */
#balanceTable .balance-status {
    white-space: normal;
    min-width: 9em;
}

/* Passing only because the tolerance allows it gets a quieter mark than failing. */
tr.tolerated {
    box-shadow: inset 3px 0 0 var(--accent-warning);
}

/* Projects */
.project-bar {
    margin-bottom: 20px;
    padding: 14px 14px 2px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.project-bar legend {
    padding: 0 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.project-bar .button-row {
    margin-bottom: 12px;
}

/* The Import button opens this; the browser's own file control is never shown. */
.file-input {
    display: none;
}

.tool-btn.small {
    padding: 8px 12px;
    font-size: 0.8125rem;
}

.tool-btn.danger:hover:not(:disabled),
.tool-btn.danger[data-armed] {
    border-color: var(--accent-error);
    background: var(--accent-error-dim);
}

.helper-text code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Movable nodes. touch-action lets a finger drag a node instead of the page. */
.diagram-host .sankey-node,
.diagram-host .sankey-node-hit,
.diagram-host .sankey-label {
    cursor: grab;
    touch-action: none;
    user-select: none;
}

.diagram-host.dragging,
.diagram-host.dragging .sankey-node,
.diagram-host.dragging .sankey-node-hit,
.diagram-host.dragging .sankey-label {
    cursor: grabbing;
}

.diagram-host .sankey-node:focus-visible {
    outline: 2px solid var(--accent-educational);
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 1100px) {
    .sankey-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    /* The diagram is the answer, so it leads once the columns stack, with the
       scope notice still ahead of it. */
    .diagram-panel {
        order: -1;
    }

    .sankey-layout > .disclaimer-card {
        order: -2;
    }
}

@media (max-width: 768px) {
    .panel {
        padding: 16px;
    }

    .check {
        min-height: 44px;
    }

    input,
    select,
    textarea {
        font-size: 1rem;
    }
}