:root {
    --ssd-bg: #fbfaf7;
    --ssd-panel: #ffffff;
    --ssd-ink: #111111;
    --ssd-muted: #5d5d5d;
    --ssd-line: #111111;
    --ssd-soft: #eeeeea;
    --ssd-blue: #0000ff;
    --ssd-red: #cc0000;
    --ssd-green: #1a6b3d;
}

body {
    background: var(--ssd-bg);
}

button,
input,
select {
    font: inherit;
}

button,
.file-button {
    min-height: 34px;
    border: 1px solid var(--ssd-line);
    background: #ffffff;
    color: var(--ssd-ink);
    padding: 7px 10px;
    cursor: pointer;
    text-align: center;
}

button:hover,
.file-button:hover {
    background: #f1f1ef;
}

button.active,
.tab-button.active {
    background: var(--ssd-ink);
    color: #ffffff;
}

button:disabled {
    color: #8a8a8a;
    border-color: #8a8a8a;
    cursor: default;
}

input,
select {
    border: 1px solid var(--ssd-line);
    background: #ffffff;
    color: var(--ssd-ink);
    padding: 6px 7px;
    min-width: 0;
}

input[type="color"] {
    min-height: 34px;
    padding: 2px;
}

input[type="range"] {
    padding: 0;
}

input[type="file"] {
    display: none;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    max-height: calc(100vh - 250px);
    object-fit: contain;
    background:
        linear-gradient(45deg, #deded8 25%, transparent 25%),
        linear-gradient(-45deg, #deded8 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #deded8 75%),
        linear-gradient(-45deg, transparent 75%, #deded8 75%);
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.ssd-app {
    display: grid;
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    gap: 18px;
    max-width: 1660px;
    margin: 0 auto;
}

.ssd-sidebar,
.ssd-workspace,
.control-section,
.canvas-column {
    border: 1px solid var(--ssd-line);
    background: var(--ssd-panel);
}

.ssd-sidebar {
    position: sticky;
    top: 58px;
    align-self: start;
    max-height: calc(100vh - 78px);
    overflow: auto;
    padding: 14px;
}

.ssd-workspace {
    min-width: 0;
    padding: 16px;
}

.workspace-title,
.panel-heading,
.section-header,
.canvas-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.workspace-title {
    align-items: flex-start;
    border-bottom: 1px solid var(--ssd-line);
    padding-bottom: 14px;
}

.workspace-title h1,
.panel-heading h2,
.section-header h2 {
    border: 0;
    max-width: none;
    margin: 0;
    padding: 0;
}

.workspace-title h1 {
    font-size: 2.2rem;
    line-height: 1;
}

.workspace-title p,
.panel-heading p {
    margin: 5px 0 0;
    color: var(--ssd-muted);
}

.export-controls {
    display: grid;
    grid-template-columns: repeat(5, minmax(120px, auto));
    gap: 8px;
    align-items: end;
}

.export-controls label,
.control-section label {
    display: grid;
    gap: 5px;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.export-controls input {
    width: 92px;
}

.ssd-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 14px 0;
}

.tab-button {
    min-width: 132px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.tool-grid {
    display: grid;
    grid-template-columns: minmax(270px, 360px) minmax(0, 1fr);
    gap: 14px;
    align-items: start;
}

.tool-controls {
    display: grid;
    gap: 12px;
}

.control-section {
    padding: 12px;
}

.control-section h2 {
    font-size: 1rem;
    font-style: normal;
}

.control-section > * + * {
    margin-top: 10px;
}

.two-col,
.button-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.button-row {
    align-items: stretch;
}

.full-width {
    display: block;
    width: 100%;
    box-sizing: border-box;
}

.check-label {
    grid-template-columns: auto 1fr;
    align-items: center;
    text-transform: none;
    letter-spacing: 0;
}

.check-label input {
    width: auto;
}

.canvas-column {
    min-width: 0;
    overflow: hidden;
}

@media (min-width: 1101px) {
    .canvas-column {
        position: sticky;
        top: 58px;
    }
}

.canvas-toolbar {
    padding: 9px 10px;
    border-bottom: 1px solid var(--ssd-line);
    color: var(--ssd-muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.canvas-toolbar button {
    min-height: 28px;
    padding: 4px 8px;
}

.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.asset-tile {
    border: 1px solid var(--ssd-line);
    background: #ffffff;
    padding: 5px;
    cursor: pointer;
    min-height: 106px;
    display: grid;
    grid-template-rows: 72px auto;
    gap: 5px;
}

.asset-tile.selected {
    outline: 3px solid var(--ssd-blue);
    outline-offset: -3px;
}

.asset-tile img {
    width: 100%;
    height: 72px;
    object-fit: contain;
    background: var(--ssd-soft);
}

.asset-tile span {
    color: var(--ssd-muted);
    font-size: 0.68rem;
    line-height: 1.1;
    overflow-wrap: anywhere;
}

.layer-list,
.embellishment-list {
    display: grid;
    gap: 10px;
}

.layer-container {
    min-height: 0;
}

.layer-scroll {
    max-height: clamp(220px, 30vh, 430px);
    overflow: auto;
    border: 1px dashed var(--ssd-line);
    background: var(--ssd-bg);
    padding: 8px;
}

.layer-item,
.embellishment-item {
    border-top: 1px dashed var(--ssd-line);
    padding-top: 10px;
    display: grid;
    gap: 8px;
}

.layer-item.selected-layer {
    outline: 2px solid var(--ssd-blue);
    outline-offset: 3px;
}

.layer-item:first-child,
.embellishment-item:first-child {
    border-top: 0;
    padding-top: 0;
}

.mini-row {
    display: grid;
    grid-template-columns: 1fr repeat(3, auto);
    gap: 6px;
    align-items: center;
}

.layer-header {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.layer-header strong {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.layer-settings {
    display: grid;
    gap: 8px;
}

.layer-settings[hidden] {
    display: none;
}

.value-control {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 78px;
    gap: 4px 8px;
    align-items: center;
    min-width: 0;
}

.control-section .value-control {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.value-control > span {
    grid-column: 1 / -1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.value-control input[type="range"] {
    grid-column: 1;
    width: 100%;
    min-width: 0;
}

.value-control input[type="number"] {
    grid-column: 2;
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.mini-row strong {
    font-size: 0.85rem;
}

.small-button {
    min-height: 28px;
    padding: 4px 7px;
}

.icon-button {
    width: 30px;
    min-width: 30px;
    height: 30px;
    min-height: 30px;
    padding: 0;
    position: relative;
    line-height: 1;
}

.caret-button::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 9px;
    width: 8px;
    height: 8px;
    border: solid currentColor;
    border-width: 0 2px 2px 0;
    transform: rotate(-45deg);
}

.caret-button.expanded::before {
    top: 7px;
    transform: rotate(45deg);
}

.eye-button::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 9px;
    width: 15px;
    height: 9px;
    border: 2px solid currentColor;
    border-radius: 50%;
}

.eye-button.active::after {
    content: "";
    position: absolute;
    left: 12px;
    top: 12px;
    width: 5px;
    height: 5px;
    background: currentColor;
    border-radius: 50%;
}

.eye-button.muted::after {
    content: "";
    position: absolute;
    left: 6px;
    top: 14px;
    width: 18px;
    height: 2px;
    background: currentColor;
    transform: rotate(-35deg);
}

.asset-pool {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
    gap: 6px;
    max-height: 190px;
    overflow: auto;
    border: 1px dashed var(--ssd-line);
    padding: 8px;
}

.asset-pool[hidden] {
    display: none;
}

.pool-check {
    border: 1px solid var(--ssd-line);
    padding: 5px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 4px;
    align-items: center;
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.68rem;
}

.pool-check img {
    grid-column: 1 / -1;
    width: 100%;
    height: 52px;
    object-fit: contain;
    background: var(--ssd-soft);
}

.pool-check span {
    overflow-wrap: anywhere;
    line-height: 1.1;
}

.spawn-advanced {
    border-top: 1px dashed var(--ssd-line);
    padding-top: 10px;
    display: grid;
    gap: 8px;
}

.embellishment-item {
    cursor: pointer;
}

.embellishment-item.selected {
    border-color: var(--ssd-blue);
    outline: 2px solid var(--ssd-blue);
    outline-offset: 4px;
}

.empty-state {
    border: 1px dashed var(--ssd-line);
    color: var(--ssd-muted);
    padding: 12px;
    font-size: 0.82rem;
}

@media (max-width: 1100px) {
    .ssd-app,
    .tool-grid {
        grid-template-columns: 1fr;
    }

    .ssd-sidebar {
        position: static;
        max-height: none;
    }

    .export-controls {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
    }

    .workspace-title {
        display: grid;
    }
}

@media (max-width: 620px) {
    body {
        padding-left: 20px;
        padding-right: 20px;
    }

    .ssd-workspace,
    .ssd-sidebar {
        padding: 10px;
    }

    .two-col,
    .button-row,
    .export-controls {
        grid-template-columns: 1fr;
    }

    .value-control {
        grid-template-columns: 1fr;
    }

    .tab-button {
        flex: 1 1 100px;
        min-width: 0;
    }
}