/* ─── SunBatang (순바탕) ─── */
@font-face {
    font-family: 'SunBatang';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_eight@1.0/SunBatang-Light.woff') format('woff');
    font-weight: 300;
    font-display: swap;
}
@font-face {
    font-family: 'SunBatang';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_eight@1.0/SunBatang-Medium.woff') format('woff');
    font-weight: 500;
    font-display: swap;
}
@font-face {
    font-family: 'SunBatang';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_eight@1.0/SunBatang-Bold.woff') format('woff');
    font-weight: 700;
    font-display: swap;
}

/* ─── Reset ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --bg-0: #0c0c0e;
    --bg-1: #111113;
    --bg-2: #19191d;
    --bg-3: #242429;
    --border: #2a2a30;
    --border-hover: #3a3a42;
    --text-1: #e8e8ec;
    --text-2: #a0a0a8;
    --text-3: #686870;
    --accent: #6c8aff;
    --accent-dim: #1e2233;
    --danger: #ff4455;
    --rec: #ff3344;
    --active: #d0d0d8;
    --success: #44cc88;
    --radius: 10px;
    --radius-sm: 7px;
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    --tr: 0.18s ease;
    --panel-w: 360px;
}

body, html {
    height: 100dvh;
    background: var(--bg-0);
    color: var(--text-1);
    font-family: var(--font-sans);
    font-size: 13px;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ═══════════════════════════════════
   APP LAYOUT — Mobile First
   Mobile: column (canvas top / controls bottom)
   Desktop: row (controls left / canvas right)
   ═══════════════════════════════════ */
#app {
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ─── Live Canvas Area ─── */
#canvas-area {
    flex: 0 0 35dvh;
    min-height: 150px;
    max-height: 45dvh;
    background: var(--bg-0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    touch-action: none;
}

#canvas-wrap {
    width: 100%;
    height: 100%;
    line-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#canvas-wrap canvas {
    display: block;
    border-radius: 2px;
    /* Size controlled by JS fitCanvasToPreview() */
}

#canvas-info {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    padding: 4px 12px;
    border-radius: 12px;
    display: flex;
    gap: 10px;
    pointer-events: none;
    white-space: nowrap;
}

/* ─── Controls Panel ─── */
#controls {
    flex: 1 1 0;
    min-height: 0;
    overflow: hidden;
    background: var(--bg-1);
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
    z-index: 100;
}

.scroll-container {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    scrollbar-width: thin;
    scrollbar-color: var(--bg-3) transparent;
    -webkit-overflow-scrolling: touch;
}

.scroll-container::-webkit-scrollbar { width: 4px; }
.scroll-container::-webkit-scrollbar-track { background: transparent; }
.scroll-container::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 2px; }

/* ─── Header ─── */
.header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 12px;
    margin-bottom: 2px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.logo-group {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.5px;
    color: var(--text-1);
}

.version {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--accent);
    letter-spacing: 1px;
    background: var(--accent-dim);
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 2px;
}

.header-actions {
    display: flex;
    gap: 6px;
}

/* ─── Quick Actions ─── */
.quick-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

/* ─── Collapsible Sections ─── */
.section-collapsible {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    flex-shrink: 0;
}

.section-collapsible[open] {
    border-color: var(--border-hover);
}

.section-toggle {
    display: flex;
    align-items: center;
    padding: 9px 12px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    gap: 8px;
}

.section-toggle::-webkit-details-marker { display: none; }
.section-toggle::marker { content: ''; }

.section-toggle h2 {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-2);
    flex: 1;
}

.section-toggle::before {
    content: '▸';
    font-size: 9px;
    color: var(--text-3);
    transition: transform var(--tr);
    flex-shrink: 0;
}

.section-collapsible[open] > .section-toggle::before {
    transform: rotate(90deg);
}

.section-body {
    padding: 0 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

/* Legacy section support */
.section {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 9px;
    flex-shrink: 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.section-header h2 {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-2);
}

/* ─── Layer List ─── */
.layer-list {
    display: flex;
    flex-direction: column;
    gap: 3px;
    max-height: 160px;
    overflow-y: auto;
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 7px 9px;
    background: var(--bg-3);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--tr);
    user-select: none;
    animation: fadeIn 0.15s ease;
}

.layer-item:hover {
    border-color: var(--border-hover);
}

.layer-item.active {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.layer-item .layer-color {
    width: 9px; height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
}

.layer-item .layer-name {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    color: var(--text-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.layer-item .layer-text-preview {
    font-size: 9px;
    color: var(--text-3);
    max-width: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.layer-item .layer-actions {
    display: flex;
    gap: 3px;
}

.layer-btn {
    width: 22px; height: 22px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-3);
    border-radius: 4px;
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: 11px;
    transition: all var(--tr);
    padding: 0;
}

.layer-btn:hover { color: var(--text-1); border-color: var(--border-hover); }
.layer-btn.danger:hover { color: var(--danger); border-color: var(--danger); }

.layer-vis-btn {
    width: 22px; height: 22px;
    background: none; border: none;
    color: var(--text-2);
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: 13px;
    padding: 0;
    flex-shrink: 0;
    opacity: 0.8;
}

.layer-vis-btn.hidden-layer { opacity: 0.3; }

/* ─── Icon Button ─── */
.icon-btn {
    width: 28px; height: 28px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    color: var(--text-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all var(--tr);
    padding: 0;
}

.icon-btn:hover { color: var(--text-1); border-color: var(--border-hover); }

/* ─── Form Fields ─── */
.field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.field label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-3);
    font-weight: 700;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.field label .val {
    color: var(--accent);
    font-weight: 400;
}

.row-2 { display: flex; gap: 8px; align-items: flex-end; }
.row-3 { display: flex; gap: 8px; align-items: flex-end; }

input[type="text"],
input[type="number"],
textarea,
select {
    background: var(--bg-0);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-family: var(--font-sans);
    width: 100%;
    min-width: 0;
    outline: none;
    transition: border-color var(--tr);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
}

select {
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%2368687a' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

textarea {
    resize: vertical;
    min-height: 40px;
    line-height: 1.4;
}

/* ─── Range Slider ─── */
input[type="range"] {
    width: 100%;
    height: 24px;
    background: transparent;
    outline: none;
    -webkit-appearance: none;
    padding: 0;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 3px;
    background: var(--bg-3);
    border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px;
    background: var(--text-1);
    border-radius: 50%;
    cursor: pointer;
    margin-top: -5.5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

input[type="range"]::-moz-range-track {
    height: 3px;
    background: var(--bg-3);
    border-radius: 2px;
    border: none;
}

input[type="range"]::-moz-range-thumb {
    width: 14px; height: 14px;
    background: var(--text-1);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ─── Toggle Group ─── */
.toggle-group {
    display: flex;
    gap: 4px;
}

.toggle-btn {
    flex: 1;
    padding: 7px 4px;
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.3px;
    background: var(--bg-0);
    border: 1px solid var(--border);
    color: var(--text-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--tr);
    text-align: center;
}

.toggle-btn:hover { border-color: var(--border-hover); color: var(--text-2); }

.toggle-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 8px rgba(108,138,255,0.3);
}

/* ─── Color Input ─── */
input[type="color"] {
    height: 32px; padding: 3px;
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer; width: 100%;
}

input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 3px; }

/* ─── Canvas Presets ─── */
.canvas-presets {
    display: flex;
    gap: 5px;
}

.preset-btn {
    flex: 1;
    padding: 5px 3px;
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 700;
    color: var(--text-3);
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--tr);
    text-align: center;
}

.preset-btn:hover { color: var(--text-1); border-color: var(--border-hover); }

/* ─── Action Buttons ─── */
.btn-action {
    flex: 1;
    background: var(--bg-3);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 10px 8px;
    text-align: center;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all var(--tr);
}

.btn-action:hover { background: var(--border-hover); }
.btn-action:active { transform: scale(0.98); }

.btn-action.primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font-weight: 800;
    font-size: 11px;
}

.btn-action.primary:hover { background: #8aa4ff; }

.rec-btn { color: var(--rec); border-color: rgba(255,51,68,0.3); }
.rec-btn:hover { background: rgba(255,51,68,0.08); border-color: rgba(255,51,68,0.5); }

.rec-btn.exporting {
    animation: rec-pulse 1s ease infinite;
    background: rgba(255,51,68,0.12);
    pointer-events: none;
}

@keyframes rec-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.btn-sm {
    flex: 0 0 50px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 8px 6px;
    text-align: center;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--tr);
}

.btn-sm:hover { border-color: var(--border-hover); }

.unit-label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    padding-bottom: 10px;
    flex-shrink: 0;
}

.upload-btn { text-decoration: none; }

/* ─── Progress Bar ─── */
.progress-bar {
    height: 4px;
    background: var(--bg-3);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar.hidden { display: none; }

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s linear;
}

/* ─── Status ─── */
.status-msg {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-3);
    text-align: center;
    padding: 6px 0;
    letter-spacing: 0.3px;
    flex-shrink: 0;
}

.status-msg.success { color: var(--success); }
.status-msg.error { color: var(--danger); }

.safe-bottom {
    height: env(safe-area-inset-bottom);
    min-height: 8px;
    flex-shrink: 0;
}

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

/* ─── Fullscreen Preview ─── */
#fullscreen-view {
    position: fixed;
    inset: 0;
    background: var(--bg-0);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
}

#fullscreen-view.hidden { display: none; }

#fullscreen-canvas-holder {
    line-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn {
    position: absolute;
    top: 12px; right: 12px;
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-2);
    border-radius: 50%;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all var(--tr);
    backdrop-filter: blur(8px);
    z-index: 10;
}

.close-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }

.fullscreen-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    background: rgba(0,0,0,0.5);
    padding: 6px 14px;
    border-radius: 16px;
    pointer-events: none;
}

/* ─── Modal ─── */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 400;
    padding: 16px;
}

.modal.hidden { display: none; }

.modal-content {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    width: 100%;
    max-width: 340px;
    animation: modalIn 0.15s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.modal-header h3 {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--text-1);
}

.modal-close {
    width: 26px; height: 26px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-2);
    border-radius: 6px;
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: 16px;
    transition: all var(--tr);
}

.modal-close:hover { color: var(--text-1); border-color: var(--border-hover); }

.shortcut-list { display: flex; flex-direction: column; gap: 7px; }

.shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-2);
}

.shortcut-row span { color: var(--text-3); font-size: 9px; }

kbd {
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1px 6px;
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 700;
    color: var(--text-1);
}

/* ─── Tool Navigation Link ─── */
.tool-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-1);
    transition: all var(--tr);
    flex-shrink: 0;
}

.tool-nav-link:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.tool-nav-icon { font-size: 18px; flex-shrink: 0; }

.tool-nav-text {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-2);
    line-height: 1.4;
}

.tool-nav-text strong {
    color: var(--text-1);
    font-weight: 700;
}

.tool-nav-arrow {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-3);
    flex-shrink: 0;
}

/* ─── Animations ─── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(3px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════
   DESKTOP LAYOUT (min-width: 768px)
   Left: controls panel  |  Right: canvas
   ═══════════════════════════════════ */
@media (min-width: 768px) {
    #app {
        flex-direction: row;
    }

    #controls {
        order: -1;
        width: var(--panel-w);
        min-width: var(--panel-w);
        height: 100dvh;
        max-height: 100dvh;
        border-top: none;
        border-right: 1px solid var(--border);
    }

    #canvas-area {
        flex: 1;
        height: 100dvh;
        max-height: 100dvh;
        min-height: unset;
        background-image: radial-gradient(circle at 50% 50%, rgba(108,138,255,0.02) 0%, transparent 60%);
    }

    #canvas-wrap canvas {
        box-shadow: 0 4px 30px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.04);
        border-radius: 3px;
    }

    .scroll-container { padding: 16px; }

    .logo { font-size: 22px; }
}

/* ═══════════════════════════════════
   MOBILE LAYOUT (max-width: 767px)
   Top: canvas  |  Bottom: controls (scrollable)
   ═══════════════════════════════════ */
@media (max-width: 767px) {
    #canvas-area {
        flex: 0 0 30dvh;
        min-height: 120px;
        max-height: 35dvh;
    }

    #controls {
        flex: 1 1 0;
        min-height: 0;
    }

    .scroll-container {
        padding: 10px;
        gap: 4px;
    }

    .header { padding-bottom: 8px; }
    .logo { font-size: 18px; }

    .section { padding: 10px; gap: 7px; }
    .section-header h2 { font-size: 9px; }

    .field label { font-size: 8px; }

    input[type="text"],
    input[type="number"],
    textarea,
    select {
        padding: 7px 8px;
        font-size: 16px; /* ≥16px prevents iOS auto-zoom on focus */
    }

    textarea { min-height: 34px; }

    .toggle-btn { padding: 6px 3px; font-size: 8px; }
    .toggle-group { gap: 3px; }

    .btn-action { padding: 8px 6px; font-size: 9px; }
    .btn-action.primary { font-size: 10px; }
    .btn-sm { padding: 7px 5px; font-size: 9px; flex: 0 0 44px; }

    .row-2, .row-3 { gap: 6px; }

    .canvas-presets { gap: 3px; }
    .preset-btn { padding: 4px 2px; font-size: 7px; }

    input[type="range"] { height: 22px; }
    input[type="range"]::-webkit-slider-thumb { width: 12px; height: 12px; margin-top: -4.5px; }
    input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; }

    input[type="color"] { height: 28px; }

    .morph-step-card { padding: 6px; gap: 4px; }
    .morph-step-card textarea { min-height: 28px; padding: 5px 6px; font-size: 10px; }
    .morph-step-card select { padding: 4px 20px 4px 6px; font-size: 9px; }
    .morph-step-card .toggle-btn { padding: 3px 2px; font-size: 7px; }

    .layer-item { padding: 6px 8px; gap: 6px; }
    .layer-item .layer-name { font-size: 9px; }
    .layer-item .layer-actions { opacity: 1; }
    .layer-btn { width: 20px; height: 20px; font-size: 10px; }
    .layer-vis-btn { width: 20px; height: 20px; font-size: 12px; }

    .layer-list { max-height: 120px; }

    .morph-step-list { max-height: 180px; }

    .unit-label { font-size: 9px; padding-bottom: 8px; }
    .status-msg { font-size: 8px; padding: 4px 0; }
    .safe-bottom { min-height: 8px; }

    .icon-btn { width: 24px; height: 24px; }

    #canvas-info { font-size: 8px; padding: 3px 8px; bottom: 4px; }
}

/* ─── Morph Step Cards ─── */
.morph-step-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 300px;
    overflow-y: auto;
}

.morph-step-card {
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    animation: fadeIn 0.15s ease;
    position: relative;
}

.morph-step-card .step-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.morph-step-card .step-label {
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.5px;
}

.morph-step-card .step-del-btn {
    width: 18px; height: 18px;
    background: none; border: none;
    color: var(--text-3);
    cursor: pointer;
    display: grid; place-items: center;
    font-size: 12px;
    border-radius: 3px;
    transition: all var(--tr);
}

.morph-step-card .step-del-btn:hover {
    color: var(--danger);
    background: rgba(255,68,85,0.1);
}

.morph-step-card textarea {
    min-height: 32px;
    padding: 6px 8px;
    font-size: 11px;
}

.morph-step-card select {
    padding: 5px 24px 5px 8px;
    font-size: 10px;
}

.morph-step-card .step-row {
    display: flex;
    gap: 5px;
    align-items: flex-end;
}

.morph-step-card .step-row .field { flex: 1; }

.morph-step-card .toggle-group { gap: 3px; }
.morph-step-card .toggle-btn { padding: 4px 3px; font-size: 8px; }

/* ─── Light Mode ─── */
:root.light,
:root[data-theme="light"] {
    --bg-0: #f5f5f7;
    --bg-1: #ebebef;
    --bg-2: #ffffff;
    --bg-3: #e0e0e5;
    --border: #d0d0d6;
    --border-hover: #b0b0b8;
    --text-1: #1a1a1e;
    --text-2: #555560;
    --text-3: #888892;
    --accent: #4466dd;
    --accent-dim: #e8ecfa;
    --danger: #dd3344;
    --rec: #dd2233;
    --active: #333340;
    --success: #22aa66;
}

:root.light body,
:root[data-theme="light"] body {
    background: var(--bg-0);
}

:root.light #canvas-area,
:root[data-theme="light"] #canvas-area {
    background: #e8e8ec;
}

:root.light #fullscreen-view,
:root[data-theme="light"] #fullscreen-view {
    background: #e8e8ec;
}

:root.light .toggle-btn.active,
:root[data-theme="light"] .toggle-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

:root.light .btn-action.primary,
:root[data-theme="light"] .btn-action.primary {
    background: var(--accent);
    color: #fff;
}

:root.light .morph-step-card,
:root[data-theme="light"] .morph-step-card {
    background: var(--bg-1);
}

:root.light .layer-item.active,
:root[data-theme="light"] .layer-item.active {
    background: var(--accent-dim);
    border-color: var(--accent);
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        --bg-0: #f5f5f7;
        --bg-1: #ebebef;
        --bg-2: #ffffff;
        --bg-3: #e0e0e5;
        --border: #d0d0d6;
        --border-hover: #b0b0b8;
        --text-1: #1a1a1e;
        --text-2: #555560;
        --text-3: #888892;
        --accent: #4466dd;
        --accent-dim: #e8ecfa;
        --danger: #dd3344;
        --rec: #dd2233;
        --active: #333340;
        --success: #22aa66;
    }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}