:root{--bar-height: 64px;--focus-ring: 3px solid rgba(37, 99, 235, .35);--border: #e6e8ec;--text: #172033;--muted: #667085;--surface: #ffffff;--accent: #2563eb;--accent-hover: #1d4ed8}*{box-sizing:border-box}html,body{height:100%}body{background:#f6f5f3;color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;margin:0;overflow:hidden;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}.preview-toolbar{align-items:center;background:#ffffffeb;border-bottom:1px solid var(--border);display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:16px;height:var(--bar-height);padding:0 24px;position:sticky;top:0;z-index:10;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.toolbar-left,.toolbar-right{align-items:center;display:flex;gap:10px;min-width:0}.toolbar-right{justify-content:flex-end}.back-link,.action-button{align-items:center;border-radius:8px;display:inline-flex;font-size:14px;font-weight:600;gap:8px;height:40px;justify-content:center;text-decoration:none;white-space:nowrap}.back-link{border:1px solid var(--border);color:#344054;flex:0 0 auto;padding:0 12px}.back-link:focus-visible{outline:var(--focus-ring);outline-offset:2px}.back-link:hover,.action-button.secondary:hover{background:#f9fafb;border-color:#d0d5dd}.toolbar-center{align-items:center;display:flex;gap:8px;justify-self:center;min-width:0}.template-title{color:var(--text);font-size:15px;font-weight:700;display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.action-button{border:1px solid var(--border);cursor:pointer;padding:0 14px}.copy-menu,.dark-menu{position:relative}.chevron-icon{height:14px;width:14px}.copy-menu-list,.dark-menu-list{background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:0 12px 30px #17203324;padding:6px;position:absolute;top:calc(100% + 8px);z-index:20}.copy-menu-list{min-width:190px;right:0}.copy-menu-list[hidden],.dark-menu-list[hidden]{display:none}.copy-menu-item,.dark-menu-item{background:transparent;border:0;border-radius:6px;cursor:pointer;font:inherit}.copy-menu-item{align-items:center;color:#344054;display:flex;font-size:14px;font-weight:600;gap:10px;min-height:38px;padding:0 10px;text-align:left;width:100%}.copy-menu-item:hover,.copy-menu-item:focus-visible,.dark-menu-item:hover,.dark-menu-item:focus-visible{background:#f9fafb;outline:none}.preview-body{display:flex;align-items:stretch;height:calc(100vh - var(--bar-height))}.preview-body>.preview-stage{flex:1 1 auto;min-width:0}.customize-rail{background:var(--surface);border-left:1px solid var(--border);flex:0 0 300px;height:calc(100vh - var(--bar-height));overflow-y:auto;padding:16px}.customize-rail[hidden]{display:none}.customize-rail-head{margin-bottom:16px}.customize-rail-title{color:var(--text);font-size:15px;font-weight:700;margin:0}.customize-note-images{border-top:1px solid var(--border);margin:16px 0 0;padding-top:14px}.customize-error{color:#b42318;font-size:12px;line-height:1.4;margin:8px 0 0}.customize-custom input[type=text].is-invalid{border-color:#f97066}.customize-label{color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.02em;margin:0 0 8px;text-transform:uppercase}.color-control+.color-control{border-top:1px solid var(--border);margin-top:14px;padding-top:14px}.swatch-row+.customize-custom{margin-top:12px}.customize-note{color:var(--muted);font-size:12px;line-height:1.45;margin:-4px 0 10px}.swatch-row{display:grid;gap:6px;grid-template-columns:repeat(2,minmax(0,1fr))}.swatch{align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:8px;cursor:pointer;display:flex;gap:8px;min-height:34px;padding:0 10px;text-align:left;transition:background-color .16s ease,border-color .16s ease}.swatch-dot{background:var(--swatch, #ffffff);border:1px solid rgba(23,32,51,.18);border-radius:50%;flex:0 0 auto;height:16px;width:16px}.swatch-name{color:#344054;font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.swatch:hover{background:#f9fafb;border-color:#d0d5dd}.swatch.is-active{background:#eff6ff;border-color:#93c5fd}.swatch.is-active .swatch-name{color:#1d4ed8}.swatch:focus-visible{outline:var(--focus-ring);outline-offset:2px}.customize-custom{align-items:center;display:flex;gap:8px}.customize-custom input[type=color]{background:none;border:1px solid var(--border);border-radius:6px;cursor:pointer;height:34px;padding:2px;width:42px}.customize-custom input[type=text]{border:1px solid var(--border);border-radius:6px;color:var(--text);flex:1;font:inherit;font-size:13px;font-weight:600;height:34px;min-width:0;padding:0 10px}.customize-custom input[type=text]:focus-visible{border-color:var(--accent);outline:none}.action-button:disabled{cursor:default;opacity:.72}.action-button.secondary{background:var(--surface);color:#344054}.action-button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.action-button.primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.preview-stage{background:#eef0f3;height:calc(100vh - var(--bar-height));overflow:auto;padding:0;transition:background-color .18s ease}.preview-stage.is-dark-sim{background:#14161a}.frame-wrap{align-items:flex-start;display:flex;justify-content:center;min-height:100%;padding:16px}.frame-shell{margin:0 auto;overflow:hidden;width:var(--frame-width, 600px)}.frame-scaler{transform-origin:top left}.template-frame{background:var(--template-bg, #ffffff);border:0;display:block;height:calc(100vh - var(--bar-height));margin:0;width:var(--frame-width, 600px)}.dark-menu-list{left:50%;transform:translate(-50%);width:300px}.dark-menu-heading{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.04em;margin:0;padding:6px 10px 8px;text-transform:uppercase}.dark-menu-item{display:flex;flex-direction:column;gap:2px;padding:8px 10px;text-align:left;width:100%}.dark-menu-item.is-active{background:#eff6ff}.dark-menu-item-name{color:#344054;font-size:14px;font-weight:600}.dark-menu-item.is-active .dark-menu-item-name{color:#1d4ed8}.dark-menu-item-description{color:var(--muted);font-size:12px;line-height:1.4}.dark-menu-note{color:var(--muted);font-size:11px;line-height:1.4;margin:0;padding:8px 10px 6px}.preview-warning{background:#fef3c7;border-bottom:1px solid #fcd34d;color:#92400e;font-size:13px;line-height:1.5;margin:0;padding:10px 16px;text-align:center}.dark-toggle:focus-visible,#viewport-menu-button:focus-visible{outline:var(--focus-ring);outline-offset:2px}.dark-toggle.is-active{background:#1f2937;border-color:#1f2937;color:#fff}.action-button.dark-toggle.is-active:hover{background:#111827;border-color:#111827;color:#fff}.icon{height:16px;width:16px}@media (max-width: 760px){.preview-toolbar{grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"left right" "center center";height:auto;min-height:var(--bar-height);padding:10px 12px;row-gap:10px}.toolbar-left{grid-area:left}.toolbar-center{flex-wrap:wrap;grid-area:center;justify-content:center;justify-self:stretch}.toolbar-right{gap:8px;grid-area:right}.template-title{min-width:0}.back-link-text{display:none}.action-button{padding:0 10px}.action-button span{display:none}.dark-toggle span{display:inline}.dark-menu-list{left:12px;position:fixed;right:12px;top:calc(var(--bar-height) + 8px);transform:none;width:auto}}@media (max-width: 60rem){.preview-body{flex-direction:column}.preview-stage{flex:1 1 auto;height:auto;min-height:0}.customize-rail{border-left:0;border-top:1px solid var(--border);flex:0 0 auto;height:auto;max-height:45vh}}