/* Drivetrain Builder — Rail Flow layout styles */

/* === Rail head toolbar integration === */
.rail-head .tool-toolbar {
    margin-bottom: 0;
    padding: 0;
}

/* === Motor fields grid === */
.motor-fields,
.field-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* === Stages header === */
.stages-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.stages-header h2 {
    margin-bottom: 0;
}

/* === Gear stage (sub-card within Stages station) === */
.gear-stage {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-bottom: 0.5rem;
}
[data-theme="light"] .gear-stage {
    background: rgba(0,0,0,0.02);
}
.gear-stage:last-of-type {
    margin-bottom: 0;
}

/* Stage header */
.stage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.stage-name {
    font-weight: 600;
    font-size: 0.875rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    outline: none;
    min-width: 80px;
}
.stage-name:hover {
    background: var(--bg-card);
}
.stage-name:focus {
    background: var(--bg-card);
    box-shadow: 0 0 0 2px var(--accent-subtle);
}

.stage-actions,
.stage-controls {
    display: flex;
    gap: var(--space-xs);
    align-items: center;
}

/* === Stage tabs (pill style for ratio/pair) === */
.stage-tabs {
    display: flex;
    gap: var(--space-xs);
}
.stage-tab {
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--fg-secondary);
    background: none;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-body);
}
.stage-tab:hover {
    color: var(--fg);
    border-color: var(--border-hover);
}
.stage-tab--active {
    color: var(--accent);
    background: var(--accent-subtle);
    border-color: rgba(59,130,246,0.2);
}

/* === Pair fields === */
.pair-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* === Output mode tabs (underline style) === */
.output-mode-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-md);
}
.output-mode-tabs .stage-tab {
    border-radius: 0;
    border: none;
    border-bottom: 2px solid transparent;
    background: none;
    margin-bottom: -1px;
    padding: 0.5rem 0.875rem;
    color: var(--fg-muted);
}
.output-mode-tabs .stage-tab:hover {
    color: var(--fg-secondary);
    background: none;
    border-color: transparent;
    border-bottom-color: var(--border-hover);
}
.output-mode-tabs .stage-tab--active {
    color: var(--accent);
    background: none;
    border-color: transparent;
    border-bottom-color: var(--accent);
}

.output-hint {
    color: var(--fg-muted);
    font-size: var(--text-sm);
    font-style: italic;
    margin-top: 0.75rem;
}

/* === Results grid === */
.results-block .results-grid,
.station--results .results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

/* Style value-fields inside results as big inline values */
.station--results .value-field {
    margin-bottom: 0;
}
.station--results .value-field label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--fg-secondary);
    margin-bottom: 6px;
}
.station--results .value-field-inner {
    border: none;
    background: none;
    border-radius: 0;
}
.station--results .value-field-inner:focus-within {
    box-shadow: none;
}
.station--results .value-field-input {
    padding: 0;
    font-family: var(--font-mono);
    font-size: var(--text-result);
    font-weight: 600;
    color: var(--result-color);
    letter-spacing: -0.01em;
    background: transparent;
}
.station--results .value-field-unit {
    padding: 0 0 0 4px;
    font-size: 0.875rem;
    color: var(--result-unit);
    background: transparent;
    border-left: none;
    min-width: auto;
    justify-content: flex-start;
    align-self: flex-end;
    padding-bottom: 4px;
}

/* Result item (ratio display) */
.result-item label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--fg-secondary);
    margin-bottom: 6px;
}
.result-value {
    font-family: var(--font-mono);
    font-size: var(--text-result);
    font-weight: 600;
    color: var(--result-color);
    letter-spacing: -0.01em;
}

/* === Mobile === */
@media (max-width: 900px) {
    .field-pair,
    .motor-fields,
    .pair-fields {
        grid-template-columns: 1fr;
    }

    .station--results .results-grid,
    .results-block .results-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 0.5rem;
    }

    .station--results .value-field-input {
        font-size: var(--text-lg);
    }
    .station--results .value-field-unit {
        font-size: var(--text-xs);
    }
    .result-value {
        font-size: var(--text-lg);
    }
}

@media (max-width: 480px) {
    .station--results .results-grid,
    .results-block .results-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
}