:root{--bg: #fdfdfb;--panel: rgba(255, 255, 255, .92);--border: #e5e4de;--text: #23231f;--muted: #7a786d;--accent: #2f9e63;--accent-soft: #e4f4ea;--danger: #d33b3b;--shadow: 0 2px 16px rgba(40, 40, 30, .12);--radius: 10px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text)}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;width:100%;overflow:hidden;background:var(--bg)}.boot-screen{display:flex;height:100%;align-items:center;justify-content:center;font-size:1.2rem;color:var(--muted)}.app{position:relative;height:100%;width:100%}.canvas-host{position:absolute;inset:0}.canvas-host canvas{display:block;width:100%;height:100%;cursor:crosshair}.topbar{position:absolute;top:10px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:14px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px 12px;max-width:calc(100vw - 24px);backdrop-filter:blur(10px);z-index:30}.topbar-brand{display:flex;align-items:center;gap:6px;cursor:pointer;user-select:none}.logo{font-size:1.2rem}.brand-name{font-weight:700;letter-spacing:-.02em}.brand-env{font-size:.65rem;text-transform:uppercase;color:var(--muted);border:1px solid var(--border);border-radius:99px;padding:1px 6px}.doc-name{display:flex;align-items:center;gap:8px}.doc-name-text{border:none;background:none;font-size:.95rem;color:var(--text);cursor:text;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:4px 8px;border-radius:6px}.doc-name-text:hover{background:#f1f0ea}.doc-name input{font-size:.95rem;padding:4px 8px;border:1px solid var(--accent);border-radius:6px;outline:none}.save-badge{font-size:.72rem;color:var(--muted);white-space:nowrap}.save-badge-btn{background:none;border:none;cursor:pointer;padding:2px 6px;border-radius:4px;transition:background .15s ease;font-family:inherit}.save-badge-btn:hover{background:#0000000d}.save-dirty{color:#c07b1c}.save-error{color:var(--danger)}.save-action-btn{font-weight:500}.save-action-btn.busy{opacity:.7;cursor:wait}.btn-accent{background:var(--accent, #2d5a27)!important;color:#fff!important;border-color:var(--accent, #2d5a27)!important}.btn-accent:hover{background:#23481f!important;color:#fff!important}.topbar-actions,.topbar-actions-desktop{display:flex;align-items:center;gap:6px}.topbar-actions-mobile{display:none;position:relative}.mobile-menu-btn{font-size:1.1rem;padding:4px 8px;font-weight:700;line-height:1}.menu-backdrop{position:fixed;inset:0;z-index:45}.mobile-menu-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(10px);padding:6px;display:flex;flex-direction:column;gap:4px;min-width:190px;z-index:50}.mobile-menu-item{display:flex;align-items:center;gap:10px;padding:8px 10px;font-size:.85rem;border-radius:6px;border:none;background:none;cursor:pointer;width:100%;text-align:left;color:var(--text);transition:background .12s}.mobile-menu-item:hover{background:#f1f0ea}.mobile-menu-divider{height:1px;background:var(--border);margin:4px 0}.btn{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:8px;padding:6px 12px;font-size:.85rem;cursor:pointer;transition:background .15s}.btn:hover{background:#f3f2ec}.btn.subtle{border-color:transparent;background:transparent}.btn.block{display:block;width:100%;text-align:left}.btn:disabled{opacity:.5;cursor:default}.icon-btn{border:none;background:none;cursor:pointer;font-size:.9rem;padding:4px;border-radius:6px;color:var(--muted)}.icon-btn:hover{background:#f1f0ea;color:var(--text)}.toolpanel{position:absolute;left:10px;top:60px;max-height:calc(100% - 72px);width:264px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(10px);padding:10px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;z-index:25}.toolpanel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:4px;border-bottom:1px solid var(--border)}.toolpanel-title{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.toolpanel-collapse-btn{border:1px solid var(--border);background:#fff;cursor:pointer;font-size:.8rem;color:var(--muted);width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all .15s}.toolpanel-collapse-btn:hover{background:#f1f0ea;color:var(--text);border-color:var(--accent)}.toolpanel-toggle{position:absolute;left:10px;top:60px;z-index:25;width:44px;height:44px;border-radius:10px;background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);backdrop-filter:blur(10px);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;transition:transform .15s,border-color .15s}.toolpanel-toggle:hover{transform:scale(1.05);border-color:var(--accent)}.toolpanel-toggle-icon{font-size:1.15rem;line-height:1}.toolpanel-toggle-dot{width:6px;height:6px;border-radius:50%}.toolpanel-backdrop{display:none}.tool-grid{display:flex;flex-direction:column;gap:8px}.tool-group-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:4px}.tool-row{display:flex;flex-wrap:wrap;gap:4px}.tool-btn{width:38px;height:38px;border:1px solid var(--border);background:#fff;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1.05rem;transition:all .12s}.tool-btn:hover{border-color:var(--accent)}.tool-btn.active{background:var(--accent-soft);border-color:var(--accent)}.tool-btn:disabled{opacity:.35;cursor:default}.tool-foot{margin-top:auto;display:flex;gap:4px;padding-top:8px;border-top:1px solid var(--border)}.brush-settings{border-top:1px solid var(--border);padding-top:10px;display:flex;flex-direction:column;gap:8px}.color-row{display:flex;flex-wrap:wrap;gap:4px}.swatch{width:24px;height:24px;border-radius:6px;border:1px solid rgba(0,0,0,.12);cursor:pointer;padding:0}.swatch.active{outline:2px solid var(--accent);outline-offset:1px}.swatch.custom{position:relative;background:conic-gradient(red,#ff0,#0f0,#0ff,#00f,#f0f,red)}.swatch.custom input{position:absolute;inset:0;opacity:0;cursor:pointer}.swatch.custom .rainbow{pointer-events:none;font-size:.9rem;line-height:24px;display:block;text-align:center;color:#fff;text-shadow:0 0 3px rgba(0,0,0,.7)}.slider-row{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--muted)}.slider-row input[type=range]{flex:1}.slider-val{width:38px;text-align:right;font-variant-numeric:tabular-nums}.eraser-modes{display:flex;gap:4px}.check-row{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--muted)}.sidepanel{position:absolute;right:10px;top:60px;max-height:calc(100% - 72px);width:260px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(10px);display:flex;flex-direction:column;z-index:25;overflow:hidden}.sidepanel-toggle{position:absolute;right:10px;top:60px;z-index:25;width:44px;height:44px;border-radius:10px;background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);backdrop-filter:blur(10px);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.15rem;transition:transform .15s,border-color .15s}.sidepanel-toggle:hover{transform:scale(1.05);border-color:var(--accent)}.sidepanel-head{display:flex;align-items:center;border-bottom:1px solid var(--border)}.sidepanel-head .sidepanel-tabs{flex:1;border-bottom:none}.sidepanel-close-btn{border:none;background:none;cursor:pointer;padding:6px 10px;color:var(--muted);font-size:.9rem}.sidepanel-close-btn:hover{color:var(--text)}.sidepanel-backdrop{display:none}.sidepanel-tabs{display:flex;border-bottom:1px solid var(--border)}.sidepanel-tabs button{flex:1;border:none;background:none;padding:8px 4px;font-size:.75rem;cursor:pointer;color:var(--muted)}.sidepanel-tabs button.active{color:var(--text);box-shadow:inset 0 -2px 0 var(--accent)}.sidepanel-body{flex:1;overflow-y:auto;padding:8px}.panel-list{display:flex;flex-direction:column;gap:6px}.panel-row{display:flex;align-items:center;gap:4px;border:1px solid var(--border);border-radius:8px;padding:4px 6px;background:#fff}.panel-row-main{flex:1;display:flex;align-items:center;gap:8px;border:none;background:none;cursor:pointer;text-align:left;padding:4px;font-size:.85rem}.bm-depth{margin-left:auto;font-size:.68rem;color:var(--muted);font-variant-numeric:tabular-nums}.panel-hint{font-size:.75rem;color:var(--muted);line-height:1.45}.panel-error{font-size:.8rem;color:var(--danger)}.layer-name{flex:1;min-width:0;border:none;background:none;font-size:.8rem;padding:4px}.layer-name:focus{outline:1px solid var(--accent);border-radius:4px}.layer-blend{font-size:.7rem;border:1px solid var(--border);border-radius:6px;background:#fff}.layer-opacity{width:60px}.palette-block{border:1px solid var(--border);border-radius:8px;padding:6px;background:#fff}.palette-head{display:flex;justify-content:space-between;align-items:center;font-size:.75rem;color:var(--muted);margin-bottom:4px}.zoom-hud{position:absolute;left:50%;transform:translate(-50%);bottom:10px;display:flex;align-items:center;gap:4px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(10px);padding:4px 6px;z-index:20}.hud-btn{width:32px;height:32px;border:none;background:none;border-radius:6px;font-size:1rem;cursor:pointer}.hud-btn:hover{background:#f1f0ea}.zoom-readout{min-width:86px;text-align:center;line-height:1.1}.zoom-line1{font-size:.8rem;font-weight:600;font-variant-numeric:tabular-nums}.zoom-line2{font-size:.62rem;color:var(--muted)}.quick-menu{position:fixed;z-index:50;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px;display:flex;flex-direction:column;gap:6px;min-width:180px}.quick-colors{display:flex;flex-wrap:wrap;gap:4px;max-width:200px}.text-overlay{position:fixed;z-index:40;transform:translate(-4px,-4px)}.text-overlay input{font-size:16px;padding:6px 10px;border:1px solid var(--accent);border-radius:8px;outline:none;min-width:240px;box-shadow:var(--shadow)}.modal-backdrop{position:fixed;inset:0;background:#1e1e1959;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:20px;width:min(480px,calc(100vw - 40px));max-height:80vh;overflow-y:auto;display:flex;flex-direction:column;gap:12px}.modal h2{margin:0;font-size:1.15rem}.modal-actions{display:flex;justify-content:flex-end}.export-grid,.doc-list{display:flex;flex-direction:column;gap:6px}.doc-list-head{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.share-url{display:flex;gap:6px}.share-url input{flex:1;font-size:.8rem;padding:6px 8px;border:1px solid var(--border);border-radius:8px}.offline-banner{position:absolute;bottom:56px;left:50%;transform:translate(-50%);background:#fff7e6;border:1px solid #e8d5a3;color:#8a6a1f;font-size:.8rem;border-radius:99px;padding:6px 14px;z-index:30}.ui-hidden .topbar,.ui-hidden .toolpanel,.ui-hidden .sidepanel,.ui-hidden .zoom-hud{display:none}.viewer{position:relative;height:100%;width:100%;background:#fff}.viewer-canvas{position:absolute;inset:0}.viewer-canvas canvas{display:block;width:100%;height:100%;cursor:grab}.viewer-bar{position:absolute;top:10px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:12px;background:#ffffffeb;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px 14px;z-index:30;backdrop-filter:blur(10px)}.viewer-name{font-weight:700;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-hint{font-size:.75rem;color:var(--muted)}.viewer-zoom{position:absolute;left:10px;bottom:10px;display:flex;gap:4px;background:#ffffffeb;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:4px 6px;z-index:30}.viewer-zoom button{width:32px;height:32px;border:none;background:none;border-radius:6px;font-size:1rem;cursor:pointer}.viewer-zoom button:hover{background:#f1f0ea}.viewer-status{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--muted);font-size:1rem}@media (max-width: 900px){.toolpanel{top:58px;width:min(250px,calc(100vw - 32px));max-height:calc(100% - 68px);z-index:35;padding-bottom:max(10px,env(safe-area-inset-bottom,0px))}.toolpanel-toggle{top:58px;left:10px;z-index:25}.toolpanel-backdrop{display:block;position:fixed;inset:0;z-index:30;background:#00000026}.zoom-hud{left:50%;transform:translate(-50%);bottom:max(10px,env(safe-area-inset-bottom,0px));z-index:20}.sidepanel{position:fixed;right:10px;top:58px;bottom:auto;width:min(290px,calc(100vw - 32px));max-height:calc(100% - 68px);z-index:35;box-shadow:0 4px 24px #0003}.sidepanel-toggle{top:58px;right:10px;z-index:25}.sidepanel-backdrop{display:block;position:fixed;inset:0;z-index:30;background:#00000026;backdrop-filter:blur(2px)}}@media (max-width: 640px){.topbar{gap:6px;padding:4px 8px;max-width:calc(100vw - 16px)}.topbar-brand .brand-name{font-size:.95rem}.topbar-brand .brand-env{display:none}.doc-name{gap:4px;min-width:0}.doc-name-text{max-width:120px;font-size:.85rem;padding:2px 4px}.doc-name input{max-width:130px;font-size:.85rem;padding:2px 6px}.save-badge{font-size:.65rem}.topbar-actions-desktop{display:none}.topbar-actions-mobile{display:flex;align-items:center}.modal{width:calc(100vw - 20px);padding:14px;max-height:85vh}.viewer-bar{padding:4px 10px;gap:8px;max-width:calc(100vw - 16px)}.viewer-name{max-width:120px;font-size:.85rem}.viewer-hint{display:none}}@media (max-width: 480px){.doc-name-text{max-width:85px}.zoom-hud{padding:2px 4px;gap:2px}.zoom-hud .hud-btn{width:28px;height:28px;font-size:.9rem}.zoom-readout{min-width:65px}.zoom-line1{font-size:.72rem}.zoom-line2{font-size:.58rem}}.app-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#141414eb;color:#fff;padding:8px 18px;border-radius:20px;font-size:.88rem;box-shadow:0 4px 16px #00000040;z-index:100;pointer-events:none;animation:toast-in .2s ease-out}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}.gallery-actions-bar{display:flex;gap:8px;margin-bottom:12px}.gallery-auth-promo{background:#f6f5ee;border:1px dashed #d5d3c8;border-radius:8px;padding:10px 14px;margin-bottom:16px;font-size:.85rem}.gallery-auth-promo p{margin:0 0 8px;color:var(--text)}.gallery-auth-promo .promo-buttons{display:flex;gap:8px}.auth-modal-buttons{display:flex;flex-direction:column;gap:10px;margin:16px 0}.dev-auth-box{margin-top:18px;padding:12px;background:#faf9f5;border:1px solid #e5e3d8;border-radius:8px}.dev-auth-title{font-size:.82rem;font-weight:600;color:#666;margin-bottom:4px}.dev-auth-row{display:flex;gap:8px;margin-top:8px}.dev-auth-row input{flex:1;padding:6px 10px;border:1px solid #ccc;border-radius:6px;font-size:.85rem}