.two-col {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 1.25rem;
    align-items: start;
}

@media (max-width: 820px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

.preview-card {
    min-width: 0;
    overflow: hidden;
}

.preview-canvas-wrap {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 300px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.preview-canvas-wrap canvas {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 2px;
}

.thumb-strip {
    display: flex;
    gap: .4rem;
    overflow-x: auto;
    overflow-y: hidden;
    padding: .5rem 0 .4rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border2) transparent;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.thumb-strip::-webkit-scrollbar {
    height: 4px;
}

.thumb-strip::-webkit-scrollbar-thumb {
    background: var(--border2);
    border-radius: 2px;
}

.thumb-frame {
    flex-shrink: 0;
    width: 52px;
    height: 68px;
    border: 2px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--transition);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumb-frame:hover {
    border-color: var(--accent2);
}

.thumb-frame.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-bg);
}

.thumb-frame canvas {
    display: block;
    width: 100% !important;
    height: auto !important;
}

.page-nav-row {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.page-nav-btn {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text2);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.page-nav-btn:hover:not(:disabled) {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.page-nav-btn:disabled {
    opacity: .3;
    cursor: not-allowed;
}

.page-nav-label {
    flex: 1;
    text-align: center;
    font-size: .82rem;
    color: var(--text2);
}

.file-pill {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: .5rem .75rem;
    font-size: .8rem;
    color: var(--text2);
    margin-bottom: 1rem;
    word-break: break-all;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 1rem 0;
}

.preview-page-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, .55);
    color: #fff;
    font-size: .72rem;
    font-weight: 600;
    padding: .2rem .5rem;
    border-radius: 20px;
    pointer-events: none;
    z-index: 2;
}

/* Compression level cards */
.level-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: .5rem;
    margin-bottom: 1rem;
}

.level-card {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: .6rem .4rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--surface2);
}

.level-card:hover {
    border-color: var(--accent2);
}

.level-card.active {
    border-color: var(--accent);
    background: var(--accent-bg);
}

.level-card .lc-icon {
    font-size: 1.4rem;
    line-height: 1;
}

.level-card .lc-name {
    font-size: .72rem;
    font-weight: 700;
    margin: .25rem 0 .1rem;
    color: var(--text);
}

.level-card .lc-desc {
    font-size: .65rem;
    color: var(--text3);
    line-height: 1.3;
}

/* Target size toggle */
.target-row {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: .75rem;
}

.toggle-switch {
    position: relative;
    width: 36px;
    height: 20px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-track {
    position: absolute;
    inset: 0;
    background: var(--border2);
    border-radius: 20px;
    cursor: pointer;
    transition: background var(--transition);
}

.toggle-track::after {
    content: '';
    position: absolute;
    left: 3px;
    top: 3px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition);
}

.toggle-switch input:checked+.toggle-track {
    background: var(--accent);
}

.toggle-switch input:checked+.toggle-track::after {
    transform: translateX(16px);
}

.toggle-label {
    font-size: .82rem;
    color: var(--text2);
    font-weight: 500;
}

.target-input-row {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.target-input-row .form-control {
    width: 90px;
}

.target-input-row select {
    width: 70px;
}

/* Stats bar after compression */
.stats-bar {
    display: flex;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: .75rem;
}

.stat-cell {
    flex: 1;
    padding: .6rem .5rem;
    text-align: center;
    background: var(--surface2);
    border-right: 1px solid var(--border);
}

.stat-cell:last-child {
    border-right: none;
}

.stat-val {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--accent);
    line-height: 1;
}

.stat-val.saving {
    color: #2d9e5f;
}

.stat-lbl {
    font-size: .65rem;
    color: var(--text3);
    margin-top: .2rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}