.header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border);height:60px}.header-brand{display:flex;align-items:center;gap:10px}.header-logo{width:36px;height:36px;border-radius:8px}.header-title{font-size:22px;font-weight:700;color:#c3b1e1;letter-spacing:-.02em}.header-tagline{font-size:14px;color:var(--text-muted);font-weight:400}.header-settings{display:flex;align-items:center;gap:10px}.settings-select{padding:4px 8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:13px;cursor:pointer}@media(max-width:768px){.header-tagline{display:none}}@media(max-width:375px){.header{flex-wrap:wrap;height:auto;gap:8px;padding:10px 16px}.header-settings{width:100%;justify-content:flex-end}}.uploader-dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:32px 20px;text-align:center;cursor:pointer;transition:all 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var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:14px}.unit-btn{flex:1;padding:6px 10px;background:var(--bg);border:none;color:var(--text-muted);font-size:13px;font-weight:600;cursor:pointer;transition:all .2s}.unit-btn:first-child{border-right:1px solid var(--border)}.unit-btn:hover{color:var(--text)}.unit-btn.active{background:#e945601a;color:var(--accent)}.grid-overlay-container{width:100%;height:100%;min-height:60vh;display:flex;align-items:center;justify-content:center;position:relative}@media(max-width:768px){.grid-overlay-container{min-height:0}}.grid-canvas{display:block;border-radius:4px;box-shadow:0 4px 24px #0006}.grid-canvas--draggable{cursor:grab}.grid-canvas--draggable:active{cursor:grabbing}.control-row{margin-bottom:14px}.control-row:last-child{margin-bottom:0}.color-presets{display:flex;gap:8px}.color-swatch{width:28px;height:28px;border-radius:50%;border:2px solid var(--border);padding:0;cursor:pointer;transition:border-color .15s,box-shadow 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.2s}.mobile-tab--active{color:var(--accent);border-top-color:var(--accent)}.mobile-tab:not(.mobile-tab--active):active{color:var(--text)}.mobile-layout{display:flex;flex-direction:column;width:100%;height:100vh;height:100dvh;overflow:hidden}.mobile-canvas-area{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:8px;overflow:hidden}.mobile-panel{flex-shrink:0;max-height:0;overflow:hidden;background:var(--surface);border-top:1px solid transparent;transition:max-height .25s ease-out,padding .25s ease-out,border-color .25s ease-out;padding:0 16px}.mobile-panel--open{max-height:40vh;max-height:40dvh;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;border-top-color:var(--border);padding:12px 16px}.mobile-panel-content{display:flex;flex-direction:column;gap:12px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #1a1a2e;--surface: #16213e;--surface-hover: #1c2a4a;--border: #2a3a5c;--text: #e8e8e8;--text-muted: 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p{font-size:18px}label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}select,input[type=number]{width:100%;padding:8px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:border-color .2s}select:focus,input[type=number]:focus{border-color:var(--accent)}select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238892a8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}input[type=range]{width:100%;accent-color:var(--accent)}button{font-family:inherit;cursor:pointer}.settings-section{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.settings-section h3{font-size:13px;font-weight:600;color:var(--text);margin-bottom:14px;text-transform:uppercase;letter-spacing:.05em}.grid-info{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.grid-badge{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:4px 12px;font-size:13px;color:var(--text-muted)}.grid-badge strong{color:var(--text)}.new-project-btn{width:100%;padding:8px 12px;background:transparent;border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-muted);font-size:13px;transition:border-color .2s,color .2s}.new-project-btn:hover{border-color:var(--accent);color:var(--accent)}.app-footer{text-align:center;padding:12px;font-size:12px;color:var(--text-muted);border-top:1px solid var(--border)}.app-footer a{color:var(--text-muted);text-decoration:none}.app-footer a:hover{color:var(--accent)}@media(max-width:768px){.sidebar{display:none}.canvas-area{min-height:100vh}.app-footer{display:none}}