.trace-gap { margin-top: 10px; }

.trace-range {
    display: block;
    margin-top: 10px;
}

.trace-range input[type="range"] {
    width: 100%;
    margin-top: 6px;
}

.trace-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.selection-box .btn-block { margin-top: 0; }

.detect-modes {
    display: grid;
    gap: 10px;
}

.detect-mode {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel-2);
    color: var(--text);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.detect-mode:hover { border-color: var(--accent); }

.detect-mode span {
    font-size: 12px;
    color: var(--muted);
}

.crop-modal {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    flex-direction: column;
    background: rgba(8, 10, 15, .96);
}

.crop-modal[hidden] { display: none; }

.crop-head {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 10px 18px;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--line);
}

.crop-head h3 { font-size: 15px; }

.crop-head p {
    flex: 1 1 260px;
    margin: 0;
    font-size: 12px;
    color: var(--muted);
}

.crop-stage {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#cropCanvas {
    display: block;
    cursor: grab;
    touch-action: none;
}

.stone-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.stone-line select {
    flex: 1 1 auto;
    min-width: 0;
    margin-top: 0;
}

.stone-plus {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 0 0 auto;
    font-size: 12px;
    color: var(--muted);
}

.stone-plus input[type="number"] {
    width: 58px;
    margin-top: 0;
    padding: 6px;
    text-align: center;
}

.toolbar {
    flex: 0 0 46px;
    width: 46px;
    padding: 8px 6px;
    background: var(--bg-soft);
    border-right: 1px solid var(--line);
    overflow-y: auto;
}

.toolbar .tools {
    grid-template-columns: 1fr;
    gap: 4px;
}

.toolbar .tool {
    justify-content: center;
    height: 34px;
    padding: 0;
    background: transparent;
    border: 0;
}

.toolbar .tool:hover { background: var(--panel-2); }

.toolbar .tool.active { background: rgba(248, 128, 23, .16); }

.toolbar .tool span,
.toolbar .tool kbd { display: none; }

.sidebar-right {
    border-right: 0;
    border-left: 1px solid var(--line);
}

.hint-tip {
    position: fixed;
    z-index: 90;
    max-width: 300px;
    padding: 7px 10px;
    background: #0d1017;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 22px rgba(0, 0, 0, .45);
    color: var(--text);
    font-size: 12px;
    line-height: 1.5;
    pointer-events: none;
}

.hint-tip[hidden] { display: none; }

.trace-range label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0;
}

.spread-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}

.spread-row input[type="range"] {
    flex: 1 1 auto;
    min-width: 0;
    margin-top: 0;
}

.spread-row .btn { flex: 0 0 auto; padding: 5px 10px; }

.statusbar {
    flex: 0 0 auto;
    padding: 6px 14px;
    background: var(--bg-soft);
    border-top: 1px solid var(--line);
    overflow-x: auto;
}

.statusbar .stats {
    flex-direction: row;
    align-items: center;
    gap: 18px;
    white-space: nowrap;
}

.statusbar .stat-row { gap: 6px; }

.statusbar .stat-row b { margin-left: 0; }

.statusbar .stat-total {
    border-top: 0;
    padding-top: 0;
}

.context-menu {
    position: fixed;
    z-index: 85;
    min-width: 230px;
    padding: 6px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 14px 34px rgba(0, 0, 0, .5);
}

.context-menu[hidden] { display: none; }

.context-menu button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    width: 100%;
    padding: 7px 10px;
    background: transparent;
    border: 0;
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
}

.context-menu button:hover:not(:disabled) { background: var(--panel-2); color: var(--accent-2); }

.context-menu button:disabled {
    color: var(--muted);
    opacity: .5;
    cursor: default;
}

.context-sep {
    height: 1px;
    margin: 5px 4px;
    background: var(--line);
}

.tool-opts {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
}

.tool-opts[hidden],
.canvas-toolbar .btn[hidden] { display: none; }

.canvas-toolbar input[type="number"],
.canvas-toolbar select {
    width: auto;
    margin-top: 0;
    padding: 5px 8px;
}

.canvas-toolbar input[type="number"] { width: 62px; }

.statusbar {
    display: flex;
    align-items: center;
    gap: 14px;
}

.statusbar .btn {
    flex: 0 0 auto;
    padding: 3px 10px;
    font-size: 12px;
}

.statusbar .btn[hidden],
.status-note[hidden] { display: none; }

.status-note {
    margin-left: auto;
    font-size: 12px;
    color: var(--accent-2);
    white-space: nowrap;
}

.color-strip {
    flex: 0 0 26px;
    width: 26px;
    display: flex;
    flex-direction: column;
    background: var(--bg-soft);
    border-left: 1px solid var(--line);
}

.strip-add {
    position: relative;
    flex: 0 0 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    border-bottom: 1px solid var(--line);
    color: var(--text);
    cursor: pointer;
}

.strip-add:hover { color: var(--accent-2); }

.strip-add input[type="color"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    opacity: 0;
    cursor: pointer;
}

.strip-colors {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    scrollbar-width: none;
}

.strip-colors::-webkit-scrollbar { display: none; }

.strip-color {
    flex: 1 1 0;
    min-height: 13px;
    max-height: 24px;
    padding: 0;
    border: 0;
    border-bottom: 1px solid rgba(0, 0, 0, .35);
    cursor: pointer;
}

.strip-color.active {
    position: relative;
    z-index: 1;
    outline: 2px solid #fff;
    outline-offset: -2px;
    box-shadow: 0 0 0 2px var(--accent);
}

.canvas-toolbar .zoom {
    min-width: 74px;
    font-size: 12px;
    color: var(--muted);
}

.canvas-wrap {
    position: relative;
    min-height: 0;
    padding: 0;
    overflow: hidden;
    background: #e6e9ee;
}

#canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
}

.status-cursor {
    flex: 0 0 auto;
    min-width: 170px;
    margin-left: auto;
    font-size: 12px;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
    text-align: right;
    white-space: nowrap;
}

.status-note:not([hidden]) + .status-cursor { margin-left: 0; }

.line-icon {
    flex: 0 0 auto;
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    vertical-align: -3px;
}

.btn .line-icon { margin-right: 6px; }

.btn-icon .line-icon { margin-right: 0; }

.toolbar .tool .line-icon {
    width: 20px;
    height: 20px;
    stroke-width: 1.6;
    color: var(--text);
}

.toolbar .tool.active .line-icon { color: var(--accent); }