:root{--green: #1B4D3A;--gold: #C9A227;--bg: #f5f5f0;--white: #ffffff;--muted: #666;--border: #e0e0d0;--radius: 12px;--shadow: 0 2px 8px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:#222;min-height:100vh;min-height:100dvh}.app{max-width:480px;margin:0 auto;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}.sign-in-section{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border);text-align:center}.sign-in-section h2{color:var(--green);font-size:1rem;margin-bottom:1rem}.sign-in-hint{color:#fff9;font-size:.78rem}.google-btn-wrapper{margin-bottom:1.5rem;display:flex;justify-content:center}.error{color:#c62828;font-size:.85rem;margin-bottom:1rem}.demo-section{width:100%;max-width:320px;margin:0 auto}.demo-label{color:var(--muted);font-size:.85rem;margin-bottom:.5rem}.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}.demo-btn{padding:.6rem .8rem;border:1px solid var(--border);border-radius:8px;background:var(--white);font-size:.8rem;cursor:pointer;color:#333;transition:background .15s}.demo-btn:hover{background:#f0f0e8}.header{background:var(--green);color:var(--white);padding:.75rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:.5rem}.header-left{display:flex;flex-direction:column;gap:.1rem}.header h1{font-size:1.1rem;font-weight:700}.user-id{font-size:.72rem;opacity:.75}.header-right{display:flex;align-items:center;gap:.5rem;flex-shrink:0}.points-badge{background:var(--gold);color:var(--green);font-weight:700;font-size:.78rem;padding:.15rem .5rem;border-radius:999px;white-space:nowrap}.signout-btn{background:none;border:1px solid rgba(255,255,255,.3);color:var(--white);font-size:.78rem;padding:.2rem .5rem;border-radius:6px;cursor:pointer;white-space:nowrap}.signout-btn:hover{background:#ffffff1a}.content{flex:1;padding:1.25rem 1rem}.app-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1rem}.app-tile{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1rem .5rem;background:var(--white);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform .1s,box-shadow .15s}.app-tile:not(.disabled):active{transform:scale(.96)}.app-tile:not(.disabled):hover{box-shadow:var(--shadow)}.app-tile.disabled{opacity:.4;cursor:not-allowed}.app-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}.app-name{font-size:.78rem;font-weight:600;text-align:center;color:#333}.footer{padding:1rem 1rem 1.5rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;padding-bottom:max(1.5rem,env(safe-area-inset-bottom))}.scan-btn{width:100%;max-width:360px;padding:.9rem 1.5rem;background:var(--green);color:var(--white);border:none;border-radius:999px;font-size:1rem;font-weight:700;cursor:pointer;transition:transform .1s}.scan-btn:active{transform:scale(.97)}.mode-indicator{font-size:.72rem;color:var(--muted)}.muted{color:var(--muted)}