.image-brightness-panel{background:#fff;border:1px solid #eceff4;border-radius:8px;box-shadow:0 14px 36px #1118270f;display:flex;flex-direction:column;gap:16px;min-width:0;padding:20px}.image-brightness-panel__title{color:#111827;font-weight:800;margin:0}.image-brightness-panel__lead{color:#4b5563;line-height:1.6;margin:6px 0 0}.image-brightness-panel__workspace{align-items:stretch;display:grid;gap:18px;grid-template-columns:minmax(0,1fr) minmax(300px,360px)}.image-brightness-panel__actions,.image-brightness-panel__control-block,.image-brightness-panel__controls,.image-brightness-panel__preview-column{display:flex;flex-direction:column;min-width:0}.image-brightness-panel__preview-column{gap:10px}.image-brightness-panel__controls{gap:18px}.image-brightness-panel__control-block{gap:10px}.image-brightness-panel__file-toolbar{align-items:center;display:flex;gap:10px;justify-content:space-between;min-width:0}.image-brightness-panel__file-actions{display:flex;flex:0 0 auto;gap:8px;margin-left:auto}.image-brightness-panel__file-name{color:#4b5563;font-size:14px;font-weight:800;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.image-brightness-panel__preview-wrap{align-items:center;background:linear-gradient(45deg,#f5f7fb 25%,transparent 0),linear-gradient(-45deg,#f5f7fb 25%,transparent 0),linear-gradient(45deg,transparent 75%,#f5f7fb 0),linear-gradient(-45deg,transparent 75%,#f5f7fb 0);background-color:#fff;background-position:0 0,0 12px,12px -12px,-12px 0;background-size:24px 24px;border:1px solid #e5e7eb;border-radius:8px;display:flex;justify-content:center;min-height:300px;min-width:0;overflow:hidden}.image-brightness-panel__preview-wrap--empty{background:transparent;border:0;flex:1 1 auto;overflow:visible}.image-brightness-panel__canvas{display:block;height:auto;max-height:72vh;max-width:100%}.image-brightness-panel__compare{align-self:center;touch-action:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.image-brightness-panel__control-label{color:#111827;font-size:16px;font-weight:800;line-height:1.2}.image-brightness-panel__scale{color:#6b7280;display:flex;font-size:12px;gap:8px;justify-content:space-between;line-height:1.35}.image-brightness-panel__scale span:nth-child(2){text-align:center}.image-brightness-panel__presets{display:grid;gap:8px;grid-template-columns:repeat(2,minmax(0,1fr))}.image-brightness-panel__presets>:nth-child(3){grid-column:1/-1}.image-brightness-panel__summary{align-items:flex-start;background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;display:flex;gap:10px;padding:14px}.image-brightness-panel__summary-icon{color:#e14b4b;flex:0 0 auto;font-size:24px}.image-brightness-panel__summary span,.image-brightness-panel__summary strong{display:block}.image-brightness-panel__summary strong{color:#111827;font-size:14px;font-weight:900}.image-brightness-panel__summary span{color:#6b7280;font-size:13px;line-height:1.45;margin-top:3px}.image-brightness-panel__actions{display:grid;gap:8px;grid-template-columns:auto minmax(0,1fr)}@media(min-width:901px){.image-brightness-panel__controls{align-self:start;position:sticky;top:var(--sticky-header-offset)}}@media(max-width:900px){.image-brightness-panel__workspace{grid-template-columns:minmax(0,1fr)}.image-brightness-panel__controls{order:2}}@media(max-width:575.98px){.image-brightness-panel{padding:14px}.image-brightness-panel__file-toolbar{align-items:flex-start;flex-direction:column}.image-brightness-panel__file-actions{margin-left:0;width:100%}.image-brightness-panel__preview-wrap{min-height:230px}.image-brightness-panel__scale{font-size:11px}.image-brightness-panel__actions,.image-brightness-panel__presets{grid-template-columns:minmax(0,1fr)}.image-brightness-panel__presets>:nth-child(3){grid-column:auto}}