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1fr auto;align-items:center;gap:8px;font-size:12px;color:var(--text-muted, #6b7280)}.design-form__color-slider>span:first-child{font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-strong, #111827)}.design-form__color-slider input[type=range]{--slider-gradient: linear-gradient(90deg, #000000, #ffffff);width:100%;appearance:none;height:12px;border-radius:999px;background:transparent;cursor:pointer;accent-color:var(--accent, #2563eb);transition:box-shadow .14s ease}.design-form__color-slider input[type=range]:focus-visible{outline:none;box-shadow:0 0 0 2px #2563eb66}.design-form__color-slider input[type=range]:disabled{cursor:not-allowed;opacity:.6}.design-form__color-slider input[type=range]::-webkit-slider-runnable-track{height:12px;border-radius:999px;background:var(--slider-gradient, linear-gradient(90deg, #000000, #ffffff));border:1px solid rgba(17,24,39,.2);box-shadow:inset 0 0 0 1px #ffffff0a}.design-form__color-slider 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input[type=range]::-moz-focus-outer{border:0}.design-form__color-slider-value{font-variant-numeric:tabular-nums;min-width:44px;text-align:right}.design-form__color-actions{display:flex;justify-content:flex-end;gap:8px}.design-form__color-button{border:1px solid rgba(37,99,235,.4);background:var(--accent, #2563eb);color:#fff;font-size:12px;font-weight:600;padding:6px 12px;border-radius:999px;cursor:pointer;transition:filter .12s ease}.design-form__color-button:hover{filter:brightness(1.05)}.design-form__color-button:disabled{opacity:.6;cursor:not-allowed}.design-form__color-button--subtle{border-color:#94a3b8cc;background:#f3f4f6;color:var(--text-strong, #111827)}.design-form__color-button--subtle:hover{filter:none;background:#e5e7eb}.design-form__status{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center}.design-form__status--idle{visibility:hidden}.design-form__status--saving{border-radius:50%;border:2px solid 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720px){.design-form__field{grid-template-columns:1fr}.design-form__section{gap:16px}}.preview-panel{background:var(--panel-bg, #ffffff);border:1px solid var(--panel-border, #d1d5db);border-radius:0;display:flex;flex-direction:column;min-height:320px}.preview-panel__header{display:flex;flex-direction:column;gap:8px;padding:24px 24px 16px}.preview-panel__title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.preview-panel__header-main{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.preview-panel__header h2{margin:0;font-size:20px;font-weight:600;color:var(--text-strong, #111827)}.preview-panel__tag{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;background:#e0f2fe;color:#075985;padding:6px 10px;border-radius:999px}.preview-panel__body{position:relative;flex:0 0 auto;min-height:400px;width:100%;border-radius:0;overflow:hidden;outline:none;background:var(--preview-frame-bg, #f9fafb);transition:box-shadow .2s ease;display:flex;will-change:transform}.preview-panel__body:focus{box-shadow:0 0 0 2px #3b82f64d}.preview-panel__frame{flex:1;border:none;width:100%;height:100%;background:transparent}.preview-panel__height-control{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--text-medium, #6b7280)}.preview-panel__height-control input{width:88px;padding:6px 8px;border:1px solid var(--input-border, #d1d5db);border-radius:6px;font-size:14px;color:var(--text-strong, #111827);background:#fff}.preview-panel__height-control input:focus{outline:none;border-color:var(--button-bg-primary, #2563eb);box-shadow:0 0 0 2px #2563eb40}.preview-panel__height-suffix{font-size:14px;color:var(--text-medium, #6b7280)}.preview-panel__status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;font-size:14px;font-weight:500;color:var(--text-subtle, 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8px;border-radius:9999px;background:#2563eb14}.header-actions{display:inline-flex;align-items:center;gap:12px;font-size:14px;color:#475569}.help-button{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;min-width:36px;padding:0;border-radius:9999px;border:none;background:#e2e8f0;color:#0f172a;font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease}.help-button:not(.help-button--flashing):hover{background:#dbeafe;box-shadow:0 4px 10px #94a3b859;transform:translateY(-1px)}.help-button:focus-visible{outline:2px solid #2563eb;outline-offset:2px}.help-button-back{width:auto;min-width:0;padding:0 16px;border-radius:9999px;font-size:13px}@keyframes help-button-flash{0%,to{background:#e2e8f0;box-shadow:0 0 #2563eb00;color:#0f172a;transform:scale(1)}50%{background:#2563eb;box-shadow:0 0 0 6px #2563eb59;color:#fff;transform:scale(1.05)}}.help-button--flashing{animation:help-button-flash 1.2s ease-in-out infinite}.app-main.help-mode{display:flex;flex-direction:column}.help-screen{flex:1;display:flex;justify-content:center;padding:32px var(--designer-layout-gutter) 48px;box-sizing:border-box}.help-article{width:100%;max-width:720px;background:#fff;border-radius:16px;box-shadow:0 12px 30px #0f172a1f;padding:32px;color:#0f172a;line-height:1.7}.help-article h1,.help-article h2,.help-article h3{color:#0f172a;margin-top:0}.help-article p,.help-article ul{margin:0 0 16px}.help-article ul{padding-left:20px}.designer-info strong{color:#0f172a}.app-main{flex:1;overflow-y:auto}.main-content{width:100%;max-width:none;min-width:0;margin:0;padding:24px var(--designer-layout-gutter) 48px;display:grid;grid-template-rows:auto auto;grid-template-columns:minmax(0,1fr) minmax(0,var(--designer-controls-max-width, 392px));grid-template-areas:"presets presets" "preview 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#3b82f659}.help-button{background:#1f2937;border-color:#334155;color:#e2e8f0}.help-button:hover{background:#334155;border-color:#475569}.help-article{background:#1e293b;color:#e2e8f0;box-shadow:0 12px 30px #0f172a73}.help-article h1,.help-article h2,.help-article h3{color:#f8fafc}}