:root{--bg: #0f172a;--surface: #ffffff;--surface-muted: #f1f5f9;--border: #e2e8f0;--text: #0f172a;--text-muted: #475569;--brand: #2563eb;--brand-hover: #1d4ed8;--danger: #dc2626;--warning: #b45309;--success: #16a34a}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Pretendard,Apple SD Gothic Neo,Malgun Gothic,sans-serif;font-size:15px;color:var(--text);background:var(--surface-muted);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:inherit}a{color:var(--brand);text-decoration:none}.app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--surface-muted);display:flex;flex-direction:column}.app-header{background:var(--bg);color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between}.app-header h1{margin:0;font-size:16px;font-weight:600}.app-header button{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;padding:6px 10px;border-radius:6px;font-size:13px}.app-main{flex:1;padding:12px 12px 80px}.tabbar{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;background:var(--surface);border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(3,1fr);padding:6px 0 calc(6px + env(safe-area-inset-bottom))}.tabbar a{text-align:center;padding:8px 4px;font-size:12px;color:var(--text-muted);display:flex;flex-direction:column;align-items:center;gap:2px}.tabbar a.active{color:var(--brand);font-weight:600}.card{background:var(--surface);border-radius:12px;border:1px solid var(--border);padding:14px;margin-bottom:12px}.card h2{margin:0 0 8px;font-size:14px;font-weight:600;color:var(--text)}.card .row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border);font-size:14px}.card .row:last-child{border-bottom:none}.card .row span:last-child{color:var(--text);font-weight:500}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff;border:none;border-radius:8px;padding:10px 14px;font-size:14px;font-weight:500}.btn:hover{background:var(--brand-hover)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-block{width:100%}.input,.select,.textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text)}label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:4px}.field{margin-bottom:12px}.error{color:var(--danger);font-size:13px;margin-top:4px}.warn{color:var(--warning);font-size:13px}.muted{color:var(--text-muted);font-size:13px}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-card{background:var(--surface);padding:24px;border-radius:14px;border:1px solid var(--border);width:100%;max-width:360px}.login-card h1{margin:0 0 6px;font-size:22px}.login-card .muted{margin-bottom:16px}