:root{color-scheme:light;font-family:Avenir Next,Trebuchet MS,Segoe UI,sans-serif;line-height:1.5;font-weight:500;--asset-preview-height: 168px;--realtime-preview-height: 640px;--preview-workspace-scale: 1;--preview-workspace-width: calc( var(--realtime-preview-height) * var(--preview-aspect-ratio) );background:linear-gradient(rgba(36,105,185,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(36,105,185,.08) 1px,transparent 1px),radial-gradient(circle at 18% 12%,rgba(89,163,255,.16),transparent 30%),linear-gradient(180deg,#f3f8ff,#eef5fd 45%,#f8fbff);background-size:36px 36px,36px 36px,auto,auto;color:#08255c;--panel-bg: rgba(255, 255, 255, .86);--panel-border: rgba(166, 194, 226, .74);--panel-shadow: 0 18px 54px rgba(33, 79, 129, .12);--panel-sheen: linear-gradient(180deg, rgba(255, 255, 255, .66), transparent 42%);--accent: #0f5fc2;--accent-strong: #0a4ead;--accent-soft: rgba(15, 95, 194, .1);--accent-border: rgba(15, 95, 194, .28);--accent-hover: rgba(15, 95, 194, .14);--warm: #e76f2e;--danger: #d92f49;--text-main: #00143f;--heading-text: #00113a;--text-soft: #001a55;--text-muted: #163f77;--button-bg: rgba(255, 255, 255, .82);--button-border: rgba(148, 180, 219, .66);--button-hover-bg: #f4f9ff;--button-hover-border: rgba(15, 95, 194, .42);--icon-shadow: 0 10px 24px rgba(24, 72, 122, .1);--control-bg: rgba(255, 255, 255, .66);--control-border: rgba(166, 194, 226, .64);--subtle-bg: rgba(239, 247, 255, .74);--card-bg: rgba(255, 255, 255, .74);--card-strong-bg: linear-gradient(135deg, rgba(255, 255, 255, .92), rgba(236, 246, 255, .86));--media-bg: rgba(229, 240, 252, .88);--preview-surface-bg: linear-gradient(180deg, rgba(248, 251, 255, .96), rgba(230, 239, 249, .98));--preview-surface-border: rgba(162, 190, 224, .72);--empty-overlay-bg: linear-gradient(180deg, rgba(244, 249, 255, .62), rgba(227, 238, 250, .86));--canvas-shadow: 0 18px 48px rgba(24, 72, 122, .18);--active-text: #ffffff;--active-bg: linear-gradient(120deg, #0f5fc2, #2c8df0);--active-shadow: 0 12px 24px rgba(15, 95, 194, .18);--range-track: linear-gradient(90deg, rgba(15, 95, 194, .72), rgba(79, 158, 255, .72));--range-thumb-border: #0f5fc2;--range-thumb-bg: #ffffff;--range-thumb-shadow: 0 4px 16px rgba(24, 72, 122, .18);--select-bg: rgba(255, 255, 255, .86);--status-bg: rgba(255, 255, 255, .68);--success-text: #0d6b57;--success-bg: rgba(35, 166, 121, .1);--success-border: rgba(35, 166, 121, .24);--warn-text: #9b5a12;--warn-bg: rgba(229, 139, 37, .12);--warn-border: rgba(229, 139, 37, .26);--error-text: #b32136;--error-bg: rgba(217, 47, 73, .1);--error-border: rgba(217, 47, 73, .24);--rotation-frame: rgba(15, 95, 194, .94);--rotation-frame-shadow: 0 0 0 1px rgba(255, 255, 255, .9), 0 0 20px rgba(15, 95, 194, .18);--rotation-guide: rgba(8, 37, 92, .26);--rotation-corner-bg: rgba(255, 255, 255, .98);--rotation-corner-border: rgba(15, 95, 194, .92);--rotation-knob-bg: linear-gradient(180deg, #ffffff, #e9f3ff);--rotation-shadow: 0 10px 24px rgba(24, 72, 122, .18);--rotation-label-shadow: 0 12px 28px rgba(24, 72, 122, .16);--rotation-label-bg: rgba(255, 255, 255, .92);--asset-frame-pattern: rgba(15, 95, 194, .04)}:root[data-theme=dark]{color-scheme:dark;background:radial-gradient(circle at top left,rgba(20,238,212,.14),transparent 32%),radial-gradient(circle at right 12%,rgba(255,168,92,.16),transparent 28%),linear-gradient(160deg,#07111e,#0c1729 45%,#101a2f);background-size:auto;color:#eaf6ff;--panel-bg: rgba(9, 18, 33, .68);--panel-border: rgba(132, 179, 219, .18);--panel-shadow: 0 22px 80px rgba(0, 0, 0, .34);--panel-sheen: linear-gradient(180deg, rgba(255, 255, 255, .06), transparent 36%);--accent: #19e6c5;--accent-strong: #0fd2de;--accent-soft: rgba(25, 230, 197, .08);--accent-border: rgba(25, 230, 197, .28);--accent-hover: rgba(255, 255, 255, .1);--warm: #ffb35c;--danger: #ff7b7b;--text-main: #eaf6ff;--heading-text: #eaf6ff;--text-soft: rgba(234, 246, 255, .72);--text-muted: rgba(234, 246, 255, .58);--button-bg: rgba(255, 255, 255, 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var(--panel-border);border-radius:28px;background:var(--panel-bg);box-shadow:var(--panel-shadow);backdrop-filter:blur(18px)}.panel:before{content:"";position:absolute;inset:0;z-index:0;background:var(--panel-sheen);pointer-events:none}.panel>*{position:relative;z-index:1}.asset-bar{display:grid;gap:16px;padding:20px 24px 22px}.asset-bar .eyebrow,.asset-bar h1,.asset-bar .hero-copy,.asset-bar .status-text,.asset-drawer__title,.asset-drawer__state{color:var(--heading-text)}.eyebrow,.panel-kicker{margin:0 0 8px;color:var(--accent);text-transform:uppercase;letter-spacing:.24em;font-size:12px}.asset-bar h1,.preview-panel h2,.control-panel h2,.control-group h3,.empty-overlay h3{margin:0;color:var(--heading-text);font-weight:700}.asset-bar__intro{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}.asset-bar__side{display:grid;justify-items:end;gap:12px}.asset-bar 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minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border-radius:18px;border:1px solid var(--accent-border);background:var(--card-strong-bg)}.case-card__image{width:100%;aspect-ratio:4 / 5;object-fit:cover;object-position:center;border-radius:14px;border:1px solid var(--control-border);background:var(--media-bg)}.case-card__content{display:grid;gap:6px}.case-card__content h4{margin:0;font-size:18px}.case-card__content p{margin:0;color:var(--text-muted);font-size:13px}.case-card button{min-width:148px}.preview-size-field{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px 12px;padding:12px 14px;border-radius:18px;border:1px solid var(--control-border);background:var(--control-bg)}.preview-size-field span{color:var(--heading-text);font-size:13px}.preview-size-field output{color:var(--heading-text);text-align:right}.preview-size-field input{grid-column:1 / -1}.asset-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.asset-card{display:grid;gap:12px;padding:14px;border-radius:18px;border:1px solid var(--control-border);background:var(--card-bg)}.asset-card[data-loaded=true]{border-color:var(--accent-border);background:var(--control-bg)}.asset-card__frame{position:relative;padding:12px;width:100%;min-height:96px;border-radius:16px;border:1px solid var(--control-border);overflow:hidden;background:var(--media-bg),linear-gradient(45deg,var(--asset-frame-pattern) 25%,transparent 25%),linear-gradient(-45deg,var(--asset-frame-pattern) 25%,transparent 25%);display:grid;place-items:center;cursor:pointer;transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease}.asset-card__frame:hover{border-color:var(--accent-border);box-shadow:inset 0 0 0 1px var(--accent-border)}.asset-card__frame:active{transform:scale(.995)}.asset-card__image{width:100%;height:100%;object-fit:contain;object-position:center;display:block}.asset-card__image[hidden]{display:none}.asset-card__placeholder{padding:20px;text-align:center;color:var(--text-muted);font-size:13px}.asset-card__summary h4{margin:0;font-size:18px}.asset-card__summary p{margin:6px 0 0;color:var(--text-muted);font-size:13px;word-break:break-all}.asset-card__actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.asset-card__actions button{min-width:0;padding:10px 12px;border-radius:14px}.app-shell--demo .asset-card__actions button[data-action=asset-import],.app-shell--demo .asset-card__actions button[data-action=asset-replace]{border-color:var(--accent-border);background:var(--accent-soft)}.asset-card__input{display:none}.workspace{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,420px);gap:18px;align-items:start}.preview-panel,.control-panel{display:grid;gap:18px;padding:clamp(18px,2vw,24px)}.preview-panel,.control-panel{align-content:start}.panel-head{display:flex;justify-content:space-between;align-items:flex-end;gap:14px}.gesture-tip{margin:0;max-width:32ch;color:var(--text-muted);text-align:right;font-size:13px}.preview-history-toolbar{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px;margin-top:-8px;margin-bottom:-2px}.preview-mask-toggle,.preview-clip-toggle{min-width:112px;min-height:44px;padding:9px 14px;border-radius:999px;color:var(--text-soft);background:var(--button-bg);border-color:var(--button-border);box-shadow:var(--icon-shadow)}.preview-mask-toggle[data-active=true],.preview-clip-toggle[data-active=true]{color:var(--active-text);border-color:var(--accent-border);background:var(--active-bg)}.preview-clip-toggle{min-width:128px;margin-left:auto}.icon-button{display:inline-grid;width:44px;height:44px;place-items:center;padding:0;border-radius:999px;border-color:var(--button-border);background:var(--button-bg);box-shadow:var(--icon-shadow)}.icon-button svg{width:24px;height:24px;fill:currentColor}.icon-button:enabled{color:var(--accent)}.icon-button:hover:enabled{border-color:var(--button-hover-border);background:var(--button-hover-bg)}.icon-button--clear:enabled{color:var(--warm)}.icon-button--clear:hover:enabled{border-color:color-mix(in srgb,var(--warm) 48%,transparent);background:color-mix(in srgb,var(--warm) 12%,var(--button-bg))}.preview-surface{--preview-aspect-ratio: 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.rotation-handle-knob{pointer-events:none}.rotation-handle-overlay.is-active{opacity:1}.rotation-edit-frame{position:absolute;min-width:24px;min-height:24px;border:2px solid var(--rotation-frame);border-radius:8px;box-shadow:var(--rotation-frame-shadow);pointer-events:none}.rotation-edit-frame:before,.rotation-edit-frame:after{content:"";position:absolute;inset:50% 0 auto;border-top:1px dashed var(--rotation-guide);transform:translateY(-50%)}.rotation-edit-frame:after{inset:0 auto 0 50%;border-top:0;border-left:1px dashed var(--rotation-guide);transform:translate(-50%)}.rotation-edit-frame__corner{position:absolute;width:12px;height:12px;border:2px solid var(--rotation-corner-border);border-radius:4px;background:var(--rotation-corner-bg);box-shadow:0 0 0 3px var(--accent-soft)}.rotation-edit-frame__corner--tl{top:-7px;left:-7px}.rotation-edit-frame__corner--tr{top:-7px;right:-7px}.rotation-edit-frame__corner--br{right:-7px;bottom:-7px}.rotation-edit-frame__corner--bl{bottom:-7px;left:-7px}.rotation-handle-orbit{position:absolute;border:1px dashed var(--accent-border);border-radius:50%;transform:translate(-50%,-50%)}.rotation-handle-center{position:absolute;width:12px;height:12px;border-radius:50%;border:2px solid var(--rotation-corner-bg);background:var(--accent-soft);box-shadow:0 0 0 8px var(--accent-soft);transform:translate(-50%,-50%)}.rotation-handle-knob{position:absolute;width:52px;height:52px;padding:0;border-radius:999px;border:1px solid var(--accent-border);background:var(--rotation-knob-bg);color:var(--accent);font-weight:700;box-shadow:var(--rotation-shadow);transform:translate(-50%,-50%);pointer-events:auto;touch-action:none;user-select:none;cursor:grab}.rotation-handle-overlay.is-active .rotation-handle-knob{cursor:grabbing}.rotation-handle-label{position:absolute;min-width:92px;padding:6px 10px;border-radius:999px;border:1px solid var(--accent-border);background:var(--rotation-label-bg);color:var(--text-main);font-size:12px;text-align:center;white-space:nowrap;transform:translate(-50%,-50%);box-shadow:var(--rotation-label-shadow)}.preview-canvas{display:block;width:100%;height:100%;max-width:100%;max-height:100%;margin:0 auto;border-radius:18px;box-shadow:var(--canvas-shadow);touch-action:none}.mask-tools{display:grid;gap:12px;padding:16px;border-radius:22px;border:1px solid var(--control-border);background:var(--control-bg)}.mask-tools__actions,.mask-tools__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.mask-tools__field{display:grid;gap:10px}.mask-tools__label{color:var(--text-soft);font-size:13px}.segmented-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:10px}.segmented-controls 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