:root{font-family:Avenir Next,Gill Sans,sans-serif;color:#1f2933;background:radial-gradient(circle at top left,rgba(255,255,255,.95),transparent 35%),linear-gradient(135deg,#efe7d0,#dfe7ec 48%,#d7d1ef);line-height:1.5;font-weight:400;color-scheme:light}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{min-height:100vh;overflow:hidden}button,input{font:inherit}button{cursor:pointer}.app-shell{height:100vh;padding:1.5rem;display:grid;grid-template-rows:auto minmax(0,1fr);gap:1rem;overflow:hidden}.app-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start}.eyebrow{margin:0 0 .25rem;text-transform:uppercase;letter-spacing:.12em;font-size:.72rem;color:#7b5e2d}.app-header h1{margin:0;font-size:clamp(1.9rem,2.6vw,3rem)}.header-copy{margin:.5rem 0 0;max-width:50rem}.header-stats{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:flex-end}.header-stats span{background:#ffffffad;border:1px solid rgba(31,41,51,.12);border-radius:999px;padding:.4rem .8rem}.tutorial-trigger{border-radius:999px;border:1px solid rgba(31,41,51,.14);background:#1368ce;color:#fff;padding:.45rem .9rem;font-weight:700}.workspace{display:grid;grid-template-columns:18rem minmax(0,1fr);min-height:0;gap:1rem}.toolbar,.canvas-panel,.phone-card{border-radius:1.4rem;border:1px solid rgba(31,41,51,.12);background:#ffffffbf;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 24px 60px #39352924}.toolbar{padding:1rem;display:grid;align-content:start;gap:1rem;min-height:0;overflow:auto}.toolbar-section h2{margin:0;font-size:1rem}.section-header-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:nowrap}.tool-grid,.palette-grid{display:grid;gap:.6rem}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-dropdown{position:relative}.tool-dropdown summary{list-style:none}.tool-dropdown summary::-webkit-details-marker{display:none}.tool-dropdown-trigger{width:100%;display:flex;align-items:center;justify-content:space-between}.tool-dropdown-trigger:after{content:"▾";font-size:.8rem}.tool-dropdown-menu{position:absolute;top:calc(100% + .35rem);left:0;right:0;z-index:10;display:grid;gap:.45rem;padding:.45rem;border-radius:.9rem;border:1px solid rgba(31,41,51,.14);background:#fffffffa;box-shadow:0 18px 40px #3935292e}.tool-dropdown-menu .secondary-button{width:100%}.palette-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:.8rem}.tool-button,.secondary-button,.zoom-row button{border-radius:.9rem;border:1px solid rgba(31,41,51,.14);background:#fffffff2;padding:.7rem .9rem}.icon-button-row,.history-row{display:flex;align-items:center;gap:.45rem;flex-wrap:nowrap}.icon-button{min-width:2.3rem;width:2.3rem;height:2.3rem;padding:0;display:inline-grid;place-items:center;font-size:1rem;line-height:1}.tool-button.active,.swatch.active{outline:3px solid rgba(19,104,206,.24);border-color:#1368ce}.tool-button:focus-visible,.swatch:focus-visible,.secondary-button:focus-visible,.zoom-row button:focus-visible,.color-input:focus-visible,input[type=range]:focus-visible{outline:3px solid rgba(19,104,206,.34);outline-offset:2px}.swatch{width:100%;aspect-ratio:1;border-radius:.75rem;border:2px solid rgba(31,41,51,.2)}.toolbar-label{display:block;margin-bottom:.35rem;font-size:.92rem}.color-input,input[type=range]{width:100%;margin-bottom:.8rem}.zoom-row{display:flex;align-items:center;gap:.45rem;flex-wrap:nowrap}.canvas-panel{position:relative;overflow:hidden;min-height:0;height:100%}.canvas-surface{width:100%;height:100%;display:block;touch-action:none}.canvas-help{position:absolute;right:1rem;bottom:1rem;max-width:18rem;padding:.75rem .9rem;background:#ffffffe0;border-radius:1rem;border:1px solid rgba(31,41,51,.1);font-size:.92rem}.tutorial-backdrop,.tour-overlay{position:fixed;inset:0;z-index:40}.tutorial-backdrop{background:#0f13198f;display:grid;place-items:center;padding:1.5rem}.tutorial-modal,.tour-card{border-radius:1.4rem;border:1px solid rgba(31,41,51,.14);background:#fffffff5;box-shadow:0 24px 60px #0f13193d}.tutorial-modal{width:min(72rem,100%);max-height:min(88vh,56rem);overflow:auto;padding:1.4rem}.tutorial-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start}.tutorial-header h2,.tutorial-section h3,.tour-card h2{margin:0}.tutorial-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1rem}.tutorial-section,.tutorial-callout{border-radius:1.2rem;border:1px solid rgba(31,41,51,.12);background:#ffffffc7;padding:1.15rem}.tutorial-steps{margin:.8rem 0 0;padding-left:1.2rem}.tutorial-callout{margin-top:1rem}.tutorial-callout-title{margin:0;font-weight:700}.cuboid-demo{margin-top:1rem;border-radius:1rem;border:1px solid rgba(31,41,51,.12);background:radial-gradient(circle at top left,rgba(255,255,255,.92),transparent 36%),linear-gradient(135deg,#efe7d0b3,#dfe7ecd9);padding:.85rem}.cuboid-demo svg{display:block;width:100%;height:auto}.cuboid-edge{fill:none;stroke:#1368ce2e;stroke-width:7;stroke-linecap:round;stroke-linejoin:round;transition:stroke .18s ease}.cuboid-edge.visible{stroke:#1368ce}.tour-overlay{background:#0f131994;pointer-events:auto}.tour-highlight{position:fixed;border-radius:1.2rem;border:3px solid rgba(255,255,255,.96);box-shadow:0 0 0 9999px #0f131929,0 24px 50px #0f131947;pointer-events:none}.tour-card{position:fixed;right:1.5rem;bottom:1.5rem;width:min(28rem,calc(100vw - 3rem));padding:1.15rem}.tour-card p{margin-bottom:0}.tour-detail{color:#52606d}.tour-actions{display:flex;justify-content:flex-end;gap:.6rem;margin-top:1rem}.phone-blocker{min-height:100vh;display:grid;place-items:center;padding:1.5rem}.phone-card{max-width:32rem;padding:1.5rem}.phone-card h1{margin-top:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:980px){.app-shell{grid-template-rows:auto minmax(0,1fr)}.workspace{grid-template-columns:1fr}.toolbar{grid-template-columns:repeat(2,minmax(0,1fr));align-content:start}.tutorial-grid{grid-template-columns:1fr}}@media(max-width:720px){.app-header{display:grid}.header-stats{justify-content:flex-start}.tutorial-backdrop,.tour-overlay{padding:1rem}.tutorial-modal,.tour-card{width:100%}.tour-card{right:1rem;left:1rem;bottom:1rem}}