:root{--bg:#f6f6f7;--card:#fff;--text:#202223;--muted:#6d7175;--line:#e1e3e5;--green:#008060;--blue:#2c6ecb;--red:#d72c0d;--dark:#1f2124}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}aside{background:#fff;border-right:1px solid var(--line);padding:22px;display:flex;flex-direction:column;gap:28px}.logo{font-weight:800;font-size:20px}nav{display:flex;flex-direction:column;gap:8px}nav a{padding:10px 12px;border-radius:10px;color:#444}nav a.active,nav a:hover{background:#eef2ff;color:#1d4ed8}.side-foot{margin-top:auto;color:var(--muted);font-size:12px;word-break:break-all}main{padding:32px;max-width:1280px;width:100%}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}h1{font-size:30px;margin:0 0 6px}h2{font-size:17px;margin:0 0 16px}.muted{color:var(--muted);font-size:14px}.grid{display:grid;gap:16px}.stats{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:16px}.two{grid-template-columns:1fr 1fr;margin-bottom:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 1px 1px rgba(0,0,0,.03)}.stats .card span{display:block;color:var(--muted);font-size:13px}.stats .card b{display:block;font-size:30px;margin-top:8px}.add-form{display:flex;gap:12px;align-items:center;flex-wrap:wrap}input{border:1px solid #c9cccf;border-radius:10px;padding:11px 12px;font-size:14px;background:#fff;min-width:0}label{display:grid;gap:6px;font-size:13px;color:#444}.check{display:flex;grid-template-columns:auto;align-items:center;gap:8px}.check input{width:auto}.btn{border:1px solid #c9cccf;border-radius:10px;background:#fff;padding:10px 14px;font-weight:650;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn.primary{background:#008060;color:#fff;border-color:#008060}.btn.google{background:#fff;border-color:#c9cccf}.btn.danger{color:var(--red)}.btn.full{width:100%}.table-head{display:flex;justify-content:space-between;align-items:center}table{width:100%;border-collapse:collapse}th,td{text-align:left;border-top:1px solid var(--line);padding:13px 10px;font-size:14px;vertical-align:top}th{color:var(--muted);font-size:12px;text-transform:uppercase}.actions{display:flex;gap:8px;flex-wrap:wrap}.actions form{margin:0}.badge{display:inline-flex;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;background:#eee;color:#555}.badge.available{background:#d1fae5;color:#065f46}.badge.taken{background:#fee2e2;color:#991b1b}.badge.error{background:#fef3c7;color:#92400e}.badge.unknown{background:#e5e7eb;color:#374151}.error{color:var(--red);font-size:12px;margin-top:4px}.login-bg{display:grid;place-items:center;min-height:100vh;background:linear-gradient(180deg,#f7f8fb,#eef2f7)}.login-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;width:min(420px,92vw);box-shadow:0 20px 50px rgba(0,0,0,.08)}.brand-mark{width:44px;height:44px;border-radius:12px;background:#008060;color:white;display:grid;place-items:center;font-weight:800;margin-bottom:18px}.stack{display:grid;gap:13px}.alert{background:#fff4f4;border:1px solid #ffd6d6;color:#9b1c1c;padding:10px;border-radius:10px;margin:12px 0}.divider{text-align:center;color:var(--muted);font-size:12px;margin:16px 0}.hint{background:#f4f6f8;color:#5c5f62;border-radius:10px;padding:10px;font-size:13px}@media(max-width:900px){.layout{grid-template-columns:1fr}aside{position:static}.stats,.two{grid-template-columns:1fr}main{padding:18px}header{align-items:flex-start;gap:12px;flex-direction:column}}