*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #252542;--panel-bg: #16213e;--panel-border: #0f3460;--text: #e0e0e0;--text-muted: #7a8ba0;--text-label: #a0b0c0;--input-bg: #0d1b2a;--input-border: #0f3460;--btn-secondary-bg: #0f3460;--btn-secondary-color: #a8c4e0;--btn-secondary-border: #1a4a7a;--btn-ghost-color: #8a9aaa;--btn-ghost-border: #2a3a4a;--accent: #e94560}[data-theme=light]{--bg: #e8eaf0;--panel-bg: #ffffff;--panel-border: #d0d8e8;--text: #1a1a2e;--text-muted: #5a6a80;--text-label: #4a5a6a;--input-bg: #f0f4f8;--input-border: #b0c0d0;--btn-secondary-bg: #dce8f5;--btn-secondary-color: #2a4a6a;--btn-secondary-border: #b0c8e0;--btn-ghost-color: #4a5a6a;--btn-ghost-border: #c0ccd8;--accent: #e94560}body{background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,sans-serif;min-height:100vh}#app{display:flex;align-items:flex-start;gap:24px;padding:24px;min-height:100vh}#canvas-container{flex:1;min-width:0;display:flex;justify-content:center}#canvas-container canvas{display:block;border-radius:8px;box-shadow:0 8px 32px #00000080;touch-action:pan-y}#mobile-bar,#scrim,.sheet-close{display:none}#panel{width:220px;flex-shrink:0;display:flex;flex-direction:column;gap:24px}#panel h1{font-size:22px;font-weight:700;color:var(--text);letter-spacing:.5px}.section{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px}.section h2{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-muted)}.button-group{display:flex;flex-direction:column;gap:8px}.btn{width:100%;padding:9px 14px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:filter .15s,transform .1s;text-align:center}.btn:active{transform:scale(.97)}.btn:hover{filter:brightness(1.15)}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--btn-secondary-bg);color:var(--btn-secondary-color);border:1px solid var(--btn-secondary-border)}.btn-ghost{background:transparent;color:var(--btn-ghost-color);border:1px solid var(--btn-ghost-border);font-weight:400;font-size:13px}.fields{display:flex;flex-direction:column;gap:10px}.field{display:flex;align-items:center;justify-content:space-between;gap:8px}.field label{font-size:13px;color:var(--text-label);white-space:nowrap}.stepper{display:flex;align-items:stretch;background:var(--input-bg);border:1px solid var(--input-border);border-radius:8px;overflow:hidden;transition:border-color .15s,box-shadow .15s}.stepper:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #e9456033}.stepper .step{width:26px;border:none;background:transparent;color:var(--text-muted);font-size:16px;font-weight:700;line-height:1;cursor:pointer;transition:background .12s,color .12s;-webkit-user-select:none;user-select:none}.stepper .step:hover{background:var(--accent);color:#fff}.stepper .step:active{transform:scale(.9)}.field input{width:56px;padding:6px 4px;background:transparent;border:none;color:var(--text);font-size:13px;font-weight:600;text-align:center;outline:none}.field input::-webkit-inner-spin-button,.field input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.field input[type=number]{-moz-appearance:textfield}.theme-toggle{display:flex;align-items:center;gap:8px;background:none;border:none;cursor:pointer;padding:4px 0;width:fit-content}.toggle-sun,.toggle-moon{font-size:16px;line-height:1;transition:opacity .3s}.toggle-moon{opacity:1}.toggle-sun,[data-theme=light] .toggle-moon{opacity:.4}[data-theme=light] .toggle-sun{opacity:1}.toggle-track{position:relative;width:44px;height:24px;background:#2a3a55;border-radius:12px;flex-shrink:0;transition:background .3s ease}[data-theme=light] .toggle-track{background:#f0c040}.toggle-thumb{position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;box-shadow:0 1px 4px #00000059;transition:transform .3s ease}[data-theme=light] .toggle-thumb{transform:translate(20px)}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.toggle-row label{font-size:13px;color:var(--text-label)}.toggle-checkbox{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:44px;height:24px;background:var(--btn-ghost-border);border-radius:12px;cursor:pointer;position:relative;flex-shrink:0;transition:background .2s}.toggle-checkbox:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;box-shadow:0 1px 4px #00000059;transition:transform .2s}.toggle-checkbox:checked{background:var(--accent)}.toggle-checkbox:checked:after{transform:translate(20px)}@media (max-width: 768px){#app{flex-direction:column;align-items:stretch;gap:0;padding:8px 8px 72px;min-height:auto}#canvas-container{width:100%}#canvas-container canvas{box-shadow:0 4px 16px #0006}#panel{position:fixed;left:0;right:0;bottom:0;width:100%;max-height:85vh;overflow-y:auto;z-index:30;gap:16px;padding:16px 16px 24px;background:var(--panel-bg);border-top:1px solid var(--panel-border);border-radius:18px 18px 0 0;box-shadow:0 -8px 32px #0006;transform:translateY(100%);transition:transform .3s ease}body.sheet-open #panel{transform:translateY(0)}.sheet-close{display:block;align-self:center;background:var(--input-bg);color:var(--text-muted);border:none;border-radius:12px;width:56px;height:28px;font-size:16px;cursor:pointer}#scrim{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:20}body.sheet-open #scrim{opacity:1;pointer-events:auto}#mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;align-items:center;gap:8px;padding:8px 12px;background:var(--panel-bg);border-top:1px solid var(--panel-border)}#mobile-bar button{min-height:44px;padding:0 14px;border:1px solid var(--btn-secondary-border);border-radius:10px;background:var(--btn-secondary-bg);color:var(--btn-secondary-color);font-size:18px;font-weight:600;cursor:pointer}#mobile-bar #sheet-toggle{margin-left:auto;background:var(--accent);color:#fff;border:none;font-size:15px}#flag-count{font-size:15px;font-weight:600;color:var(--text-label)}.btn{padding:13px 14px;font-size:15px}.stepper .step{width:40px;font-size:20px}.field input{width:64px;font-size:15px;padding:10px 4px}}