:root{
  --bg:#0d1117; --bg2:#161b22; --card:#161b22; --border:#21262d;
  --text:#e6edf3; --muted:#8b949e;
  --up:#3fb950; --up-bg:rgba(63,185,80,.12);
  --down:#f85149; --down-bg:rgba(248,81,73,.12);
  --unknown:#8b949e; --unknown-bg:rgba(139,148,158,.12);
  --accent:#58a6ff;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5;
}

/* ---------- Topbar ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 28px;background:var(--bg2);border-bottom:1px solid var(--border);
  flex-wrap:wrap;gap:16px;
}
.brand{display:flex;align-items:center;gap:14px}
.brand .logo{font-size:30px}
.brand h1{font-size:19px;font-weight:700}
.brand .sub{font-size:13px;color:var(--muted)}
.head-right{display:flex;align-items:center;gap:18px}
.summary{display:flex;gap:8px}
.pill{
  font-size:13px;font-weight:600;padding:5px 11px;border-radius:999px;
  background:var(--unknown-bg);color:var(--muted);white-space:nowrap;
}
.pill.up{background:var(--up-bg);color:var(--up)}
.pill.down{background:var(--down-bg);color:var(--down)}
.logout{
  color:var(--muted);text-decoration:none;font-size:13px;font-weight:600;
  border:1px solid var(--border);padding:7px 14px;border-radius:8px;transition:.15s;
}
.logout:hover{color:var(--text);border-color:var(--muted)}

/* ---------- Main ---------- */
main{max-width:1200px;margin:0 auto;padding:26px 28px}
.meta{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin-bottom:20px}
.meta .sep{opacity:.5}
.grid{
  display:grid;gap:16px;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
}

/* ---------- Cards ---------- */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:18px;position:relative;overflow:hidden;transition:.15s;
}
.card:hover{border-color:#30363d;transform:translateY(-2px)}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--unknown)}
.card.up::before{background:var(--up)}
.card.down::before{background:var(--down)}
.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.flag{font-size:24px}
.status-badge{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--unknown-bg);color:var(--unknown)}
.status-badge.up{background:var(--up-bg);color:var(--up)}
.status-badge.down{background:var(--down-bg);color:var(--down)}
.card h3{font-size:15px;font-weight:600;margin-bottom:6px}
.card .host{font-size:12px;color:var(--muted);font-family:'SF Mono',ui-monospace,Menlo,monospace;word-break:break-all}
.stats{display:flex;gap:22px;margin:14px 0 8px}
.stats .k{display:block;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.stats .v{display:block;font-size:18px;font-weight:700;margin-top:2px}
.checked{font-size:11px;color:var(--muted)}

/* ---------- Footer ---------- */
footer{text-align:center;color:var(--muted);font-size:12px;padding:30px}

/* ---------- Login ---------- */
.login-body{display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:38px 34px;width:100%;max-width:360px;text-align:center;
  box-shadow:0 20px 60px rgba(0,0,0,.4);
}
.login-logo{font-size:42px;margin-bottom:8px}
.login-card h1{font-size:22px;margin-bottom:4px}
.login-sub{color:var(--muted);font-size:14px;margin-bottom:24px}
.login-card label{display:block;text-align:left;font-size:13px;color:var(--muted);margin-bottom:14px}
.login-card input{
  width:100%;margin-top:6px;padding:11px 13px;border-radius:9px;
  border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px;
}
.login-card input:focus{outline:none;border-color:var(--accent)}
.login-card button{
  width:100%;margin-top:8px;padding:12px;border:none;border-radius:9px;
  background:var(--accent);color:#0d1117;font-size:15px;font-weight:700;cursor:pointer;transition:.15s;
}
.login-card button:hover{filter:brightness(1.08)}
.error{
  background:var(--down-bg);color:var(--down);font-size:13px;
  padding:10px;border-radius:9px;margin-bottom:18px;
}