:root {
  --bg: #fcfcfc;
  --panel: #ffffff;
  --panel-hover: #f9f9f9;
  --border: #e6e8eb;
  --border-dark: #d1d5db;
  --text-main: #111827;
  --muted: #6b7280;
  --emerald: #3ecf8e;
  --emerald-dark: #10b981;
  --emerald-bg: #ecfdf5;
  --emerald-border: #a7f3d0;
  --bad: #ef4444;
  --bad-bg: #fef2f2;
  --bad-border: #fecaca;
  --neutral-bg: #f3f4f6;
  --neutral-border: #e5e7eb;
  --radius: 6px;
}

* { box-sizing: border-box; font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text-main); min-height: 100vh; -webkit-font-smoothing: antialiased; overflow-x: hidden; }

header { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: var(--panel); flex-wrap: wrap; gap: 0.5rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--text-main); font-weight: 600; font-size: 0.9rem; letter-spacing: -0.01em; }
.brand-icon { width: 16px; height: 16px; background: var(--emerald); border-radius: 4px; display: inline-block; }

main { max-width: 1050px; margin: 0 auto; padding: 1.25rem 1rem; width: 100%; }

.nav-bar { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 1.25rem; font-size: 0.8rem; color: var(--muted); font-weight: 500; flex-wrap: wrap; }
.nav-bar a { color: var(--muted); text-decoration: none; transition: color 0.15s; }
.nav-bar a:hover { color: var(--text-main); }

.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }
.summary-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.9rem 1.1rem; }
.summary-label { font-size: 0.7rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
.summary-value { font-size: 1.1rem; font-weight: 600; margin-top: 0.35rem; color: var(--text-main); }

.toolbar { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
input[type="text"], input[type="email"], input[type="url"] {
  flex: 1;
  min-width: 200px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.55rem 0.8rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.15s;
}
input[type="text"]:focus, input[type="email"]:focus, input[type="url"]:focus { border-color: var(--emerald); }

button {
  background: var(--emerald);
  color: #0b2f1f;
  border: 1px solid var(--emerald-border);
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.82rem;
  transition: all 0.15s ease;
  white-space: nowrap;
}
button:hover { opacity: 0.9; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-sec { background: var(--panel); color: var(--text-main); border: 1px solid var(--border); }
.btn-sec:hover:not(:disabled) { border-color: var(--border-dark); background: var(--panel-hover); }
.btn-danger { background: var(--panel); color: var(--bad); border: 1px solid var(--border); }
.btn-danger:hover { background: var(--bad-bg); border-color: var(--bad-border); }
.btn-sm { padding: 0.3rem 0.55rem; font-size: 0.75rem; font-weight: 500; }

.monitors-table-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.monitors-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.83rem; min-width: 650px; }
.monitors-table th { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--border); background: var(--bg); color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
.monitors-table th.sortable { cursor: pointer; user-select: none; }
.monitors-table th.sortable:hover { color: var(--text-main); }
.monitors-table td { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--border); }
.monitors-table tr:last-child td { border-bottom: none; }
.monitors-table tr:hover td { background: var(--panel-hover); }

.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-up { background: var(--emerald-dark); }
.dot-down { background: var(--bad); }
.dot-paused { background: var(--muted); }

.domain-link { font-weight: 600; text-decoration: none; color: var(--text-main); word-break: break-all; }
.domain-link:hover { color: var(--emerald-dark); }

.badge { display: inline-block; padding: 0.12rem 0.35rem; border-radius: 4px; font-size: 0.68rem; font-weight: 600; font-family: ui-monospace, monospace; }
.badge-ok { background: var(--emerald-bg); color: #065f46; border: 1px solid var(--emerald-border); }
.badge-bad { background: var(--bad-bg); color: #991b1b; border: 1px solid var(--bad-border); }
.badge-neutral { background: var(--neutral-bg); color: var(--muted); border: 1px solid var(--neutral-border); }

.icon-notif { font-size: 0.85rem; }
.icon-active { color: var(--emerald-dark); }
.icon-inactive { color: var(--muted); opacity: 0.4; }

.detail-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem; width: 100%; }
.detail-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.4rem; flex-wrap: wrap; gap: 0.75rem; }
.detail-title { margin: 0; font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; word-break: break-all; }

/* Interactive Metric Grid Cards */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0.75rem; margin-top: 1.25rem; }
.metric-box { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.85rem; display: flex; flex-direction: column; justify-content: space-between; position: relative; }
.metric-box.clickable { cursor: pointer; user-select: none; transition: all 0.15s ease-in-out; }
.metric-box.clickable:hover { border-color: var(--emerald-dark); background: var(--panel-hover); transform: translateY(-1px); }
.metric-box.active-card { border-color: var(--emerald-dark) !important; background: var(--emerald-bg) !important; box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.15); }

.metric-label { font-size: 0.7rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
.metric-value { font-size: 1rem; font-weight: 600; margin-top: 0.35rem; color: var(--text-main); }
.metric-time { font-size: 0.68rem; color: var(--muted); margin-top: 0.4rem; font-weight: 400; }

.card-action { display: flex; justify-content: space-between; align-items: center; font-size: 0.72rem; font-weight: 600; color: var(--emerald-dark); border-top: 1px solid var(--border); padding-top: 0.45rem; margin-top: 0.6rem; }

/* Drawer Panels */
.drawer-panel { background: var(--panel); border: 1px solid var(--emerald-border); border-radius: var(--radius); padding: 1.1rem; margin-bottom: 1rem; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03); transition: all 0.2s ease-in-out; }
.drawer-title { font-size: 0.72rem; font-weight: 600; color: var(--muted); text-transform: uppercase; margin-bottom: 0.75rem; display: flex; justify-content: space-between; align-items: center; }

/* Code / Baseline Block Formatting */
pre { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.75rem; line-height: 1.4; border-radius: 4px; }

.history-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.history-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.82rem; min-width: 550px; }
.history-table th { padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--border); color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
.history-table td { padding: 0.65rem 0.8rem; border-bottom: 1px solid var(--border); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

.pagination-bar { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1rem; background: var(--panel); border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--muted); flex-wrap: wrap; gap: 0.5rem; }
.pagination-controls { display: flex; gap: 0.4rem; }

.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.3); backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 1rem; }
.modal-content { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; width: 100%; max-width: 460px; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--muted); margin-bottom: 0.35rem; }
.checkbox-group { display: flex; gap: 1.25rem; font-size: 0.82rem; color: var(--text-main); margin-top: 0.4rem; flex-wrap: wrap; }
.checkbox-group label { display: flex; align-items: center; gap: 0.4rem; cursor: pointer; }

.hidden { display: none !important; }

@media (max-width: 640px) {
  header { padding: 0.6rem 0.75rem; }
  main { padding: 0.85rem 0.5rem; }
  .detail-card { padding: 0.9rem; }
  .metrics-grid { grid-template-columns: 1fr; }
  .actions { flex-direction: column; align-items: stretch; }
  button { width: 100%; text-align: center; justify-content: center; }
  .btn-sm { width: auto; }
}