:root{--bg-color: #f5f5f7;--text-color: #1d1d1f;--card-bg: #ffffff;--accent-color: #0071e3;--border-radius: 12px;--shadow: 0 4px 20px rgba(0, 0, 0, .08)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg-color);color:var(--text-color);margin:0;line-height:1.5}header{background:#fffc;backdrop-filter:blur(20px);position:sticky;top:0;z-index:100;border-bottom:1px solid rgba(0,0,0,.1);padding:1rem 2rem}nav{display:flex;justify-content:space-between;align-items:center;max-width:1000px;margin:auto}h1{font-size:1.25rem;font-weight:600;margin:0}#app{max-width:1000px;margin:2rem auto;padding:0 2rem}.hidden{display:none}.grid-container{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.project-card{background:var(--card-bg);padding:1.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow);cursor:pointer;transition:transform .2s cubic-bezier(.4,0,.2,1)}.project-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px #0000001f}.project-card h3{margin:0 0 .5rem;font-size:1.1rem}.project-card p{margin:0;font-size:.9rem;color:#86868b}.measure-form{display:flex;flex-wrap:wrap;gap:.5rem;margin:2rem 0;background:#e8e8ed;padding:.5rem;border-radius:var(--border-radius)}.measure-form input{border:none;padding:.75rem 1rem;border-radius:8px;flex:2 1 200px;background:#fff;font-size:1rem}.measure-form input#measure-val{flex:1 1 100px}button{padding:.75rem 1.5rem;border:none;border-radius:8px;cursor:pointer;background:var(--accent-color);color:#fff;font-weight:500;flex:0 1 auto}button:hover{opacity:.9}ul{list-style:none;padding:0}li{background:#fff;padding:1rem 1.5rem;margin:.5rem 0;border-radius:10px;display:flex;justify-content:space-between;box-shadow:0 1px 3px #0000000d}.total-display{font-size:1.5rem;font-weight:700;margin-top:2rem;padding-top:1rem;border-top:2px solid #e8e8ed}