:root{--brand: #1e40af;--brand-dark: #1e3a8a;--bg: #f8fafc;--surface: #ffffff;--text: #0f172a;--text-muted: #64748b;--border: #e2e8f0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100vh}body{background:var(--bg)}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}.app-shell{min-height:100vh;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom)}.header{background:var(--brand);color:#fff;padding:1.25rem 1rem;display:flex;align-items:center;gap:.75rem;box-shadow:0 1px 3px #00000014;position:sticky;top:0;z-index:10}.header-back{background:transparent;border:0;color:#fff;font-size:1.5rem;line-height:1;padding:.25rem .5rem;border-radius:.5rem}.header-back:hover{background:#ffffff1f}.header-title{font-size:1.125rem;font-weight:600;margin:0}.main{flex:1;padding:1.25rem 1rem;max-width:720px;width:100%;margin:0 auto}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.tile{background:var(--surface);border:1px solid var(--border);border-radius:1rem;padding:1.25rem 1rem;display:flex;flex-direction:column;align-items:center;gap:.75rem;transition:transform .15s ease,box-shadow .15s ease;color:var(--text)}.tile:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0f172a14}.tile:active{transform:translateY(0)}.tile-icon{width:44px;height:44px;color:var(--brand)}.tile-label{font-size:.95rem;font-weight:500;text-align:center}.empty-page{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.empty-page h2{margin:0 0 .5rem;color:var(--text);font-size:1.5rem}.empty-page p{margin:0;font-size:.95rem}