:root {
  color-scheme: dark;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --green: #22c55e;
  --red: #ef4444;
  --yellow: #eab308;
  --blue: #38bdf8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  padding-top: max(14px, env(safe-area-inset-top));
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
  gap: 8px;
}

.topbar h1 { font-size: 18px; margin: 0; }

.topbar nav { display: flex; align-items: center; gap: 12px; }
.topbar nav a { color: var(--blue); text-decoration: none; font-size: 14px; }

.container { max-width: 720px; margin: 0 auto; padding: 16px; }

.summary-row { display: flex; gap: 10px; margin-bottom: 14px; }
.summary-box {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  text-align: center;
}
.summary-box span { display: block; font-size: 24px; font-weight: 700; }
.summary-box small { color: var(--text-dim); font-size: 12px; }
.summary-box.up span { color: var(--green); }
.summary-box.down span { color: var(--red); }

.cards { display: flex; flex-direction: column; gap: 10px; }

.ip-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 5px solid var(--text-dim);
  border-radius: 12px;
  padding: 12px 14px;
}
.ip-card.status-up { border-left-color: var(--green); }
.ip-card.status-down { border-left-color: var(--red); animation: pulse-down 1.6s ease-in-out infinite; }
.ip-card.inactive { opacity: 0.45; }

@keyframes pulse-down {
  0%, 100% { background: var(--bg-card); }
  50% { background: #2a1414; }
}

.ip-name { font-weight: 600; font-size: 15px; }
.ip-addr { font-family: ui-monospace, monospace; color: var(--text-dim); font-size: 13px; }
.ip-notes { color: var(--text-dim); font-size: 12px; margin-top: 2px; }

.ip-card-side { text-align: right; min-width: 96px; }
.status-badge { font-weight: 700; font-size: 12px; letter-spacing: 0.04em; }
.status-up .status-badge { color: var(--green); }
.status-down .status-badge { color: var(--red); }
.status-unknown .status-badge { color: var(--text-dim); }

.latency { display: block; font-size: 13px; margin-top: 2px; }
.lat-good { color: var(--green); }
.lat-ok { color: var(--yellow); }
.lat-bad { color: var(--red); }

.checked-at { color: var(--text-dim); font-size: 11px; margin-top: 4px; }
.streak { display: block; color: var(--red); font-size: 11px; margin-top: 2px; }

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: none;
  cursor: pointer;
}
.pill-on { background: rgba(34,197,94,0.15); color: var(--green); }
.pill-off { background: rgba(148,163,184,0.15); color: var(--text-dim); }

.alert-error {
  background: rgba(239,68,68,0.12);
  border: 1px solid var(--red);
  color: #fca5a5;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 13px;
}
.alert-ok {
  background: rgba(34,197,94,0.12);
  border: 1px solid var(--green);
  color: #86efac;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 13px;
}

.empty { color: var(--text-dim); text-align: center; padding: 24px 0; }

/* ==== Login ==== */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  width: 100%;
  max-width: 340px;
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; text-align: center; }
.login-card .subtitle { text-align: center; color: var(--text-dim); font-size: 13px; margin-bottom: 20px; }
.login-card label { display: block; margin-bottom: 14px; font-size: 13px; color: var(--text-dim); }
.login-card input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
}
.login-card button, .form-actions button, .inline-form button {
  background: var(--blue);
  color: #0f172a;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
}
.login-card button { width: 100%; padding: 12px; }

/* ==== Manage page ==== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
.card h2 { margin-top: 0; font-size: 16px; }
.form-grid label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--text-dim); }
.form-grid input[type=text] {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 10px;
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}
.form-grid .checkbox { display: flex; align-items: center; gap: 8px; }
.form-actions { display: flex; gap: 10px; align-items: center; }
.btn-secondary { color: var(--text-dim); text-decoration: none; font-size: 14px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-dim); font-weight: 600; }
td code { font-size: 12px; }
.actions { display: flex; gap: 10px; }
.actions a { color: var(--blue); text-decoration: none; }
.link-danger { background: none; border: none; color: var(--red); padding: 0; font-size: 13px; cursor: pointer; }
.inline-form { display: inline; }
.pill-on.pill { background: rgba(34,197,94,0.15); color: var(--green); border: none; }
.pill-off.pill { background: rgba(239,68,68,0.12); color: var(--red); border: none; }