*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #273549;
  --border: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 10px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ── LOGIN ── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  text-align: center;
  margin: auto;
}

.login-logo { margin-bottom: 1rem; }
.login-card h1 { font-size: 1.4rem; margin-bottom: 0.25rem; }
.login-subtitle { color: var(--text-muted); margin-bottom: 1.75rem; }

/* ── DASHBOARD LAYOUT ── */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1rem;
}

.header-actions { display: flex; align-items: center; gap: 0.75rem; }

.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-toolbar h2 { font-size: 1.15rem; }

.toolbar-right { display: flex; gap: 0.5rem; align-items: center; }

/* ── STATS ── */
.stats-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  flex: 1;
  min-width: 120px;
  text-align: center;
}

.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; line-height: 1; }
.stat-card .stat-label { color: var(--text-muted); font-size: 0.75rem; margin-top: 0.2rem; }
.stat-card.online .stat-value { color: var(--success); }
.stat-card.offline .stat-value { color: var(--danger); }
.stat-card.inactive .stat-value { color: var(--text-muted); }
.stat-card.total .stat-value { color: var(--primary); }

/* ── DB GRID ── */
.db-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.db-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s;
}

.db-card:hover { border-color: var(--primary); }
.db-card.inactive { opacity: 0.55; }

.db-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.db-name { font-weight: 600; font-size: 1rem; word-break: break-all; }
.db-host { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.15rem; }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.status-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.status-online  { background: rgba(34,197,94,.15);  color: var(--success); }
.status-offline { background: rgba(239,68,68,.15);  color: var(--danger); }
.status-unknown { background: rgba(148,163,184,.15); color: var(--text-muted); }

.db-meta { display: flex; flex-direction: column; gap: 0.2rem; }
.db-meta span { color: var(--text-muted); font-size: 0.78rem; }
.db-meta span strong { color: var(--text); }

.db-error {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.25);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  font-size: 0.75rem;
  color: #fca5a5;
  word-break: break-word;
}

.db-card-footer {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

/* ── FORMS ── */
.form-group { margin-bottom: 1rem; text-align: left; }
.form-group label { display: block; margin-bottom: 0.35rem; font-size: 0.85rem; color: var(--text-muted); }
.form-group input, .form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr auto; gap: 0.75rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.75rem; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; }
.toggle-label { font-size: 0.85rem; color: var(--text-muted); }

.toggle {
  position: relative;
  width: 40px;
  height: 22px;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 22px;
  cursor: pointer;
  transition: background 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 3px;
  top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s;
}
.toggle input:checked + .toggle-slider { background: var(--primary); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.15s, opacity 0.15s;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--surface2); color: var(--text); }
.btn-danger { background: rgba(239,68,68,.15); color: var(--danger); border: 1px solid rgba(239,68,68,.3); }
.btn-danger:hover:not(:disabled) { background: rgba(239,68,68,.25); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.78rem; }
.btn-full { width: 100%; justify-content: center; padding: 0.65rem; font-size: 0.95rem; }

/* ── MODAL ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}
.modal-backdrop.hidden { display: none; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.75rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.modal-header h3 { font-size: 1.05rem; }
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.3rem; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1.25rem; }

/* ── ALERT ── */
.alert { padding: 0.65rem 0.9rem; border-radius: 6px; font-size: 0.85rem; margin-bottom: 1rem; }
.alert-error { background: rgba(239,68,68,.15); color: #fca5a5; border: 1px solid rgba(239,68,68,.3); }
.alert-success { background: rgba(34,197,94,.15); color: #86efac; border: 1px solid rgba(34,197,94,.3); }

/* ── MISC ── */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text-muted); }
.empty-state p { margin-top: 0.5rem; font-size: 0.9rem; }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid currentColor; border-top-color: transparent; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.refresh-info { font-size: 0.75rem; color: var(--text-muted); }

/* ── MODAL WIDE ── */
.modal-wide { max-width: 780px; }

/* ── ERROR TABLE ── */
.error-table-wrap {
  overflow-x: auto;
  max-height: 420px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.error-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.error-table th {
  background: var(--surface2);
  padding: 0.5rem 0.75rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  position: sticky;
  top: 0;
  z-index: 1;
}
.error-table td {
  padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--border);
  vertical-align: top;
}
.error-table tr:hover td { background: var(--surface2); }
.err-msg { color: #fca5a5; word-break: break-word; max-width: 380px; }

/* ── CONN STATS ── */
.conn-stats {
  display: flex;
  gap: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
}
.conn-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
}
.conn-stat + .conn-stat {
  border-left: 1px solid var(--border);
}
.conn-value {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
}
.conn-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-align: center;
}
.conn-stat.running .conn-value  { color: var(--warning); }
.conn-stat.sleeping .conn-value { color: var(--text-muted); }