:root {
  --bg: #0b1220;
  --card: #131b2e;
  --card-alt: #1a2440;
  --border: #232f4d;
  --text: #eef2ff;
  --text-secondary: #9aa5c4;
  --text-muted: #6b7594;
  --accent: #2e8eff;
  --purple: #7c4dff;
  --danger: #ff5252;
  --success: #69f0ae;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ── Login page ── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 320px;
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.login-card .subtitle {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* ── Nav ── */
.topnav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 14px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topnav .brand {
  font-weight: 800;
  margin-right: 20px;
  letter-spacing: 0.3px;
}

.topnav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
}

.topnav a:hover { background: var(--card-alt); color: var(--text); }
.topnav a.active { background: var(--accent); color: #fff; }
.topnav a.logout { margin-left: auto; color: var(--danger); }

.content {
  padding: 28px 32px 60px;
  max-width: 1100px;
  margin: 0 auto;
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 14px; color: var(--text-secondary); }
.subtitle { color: var(--text-secondary); font-size: 13px; margin: 0 0 20px; }

/* ── Forms ── */
label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.4px;
  margin: 14px 0 6px;
}

label.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text);
}
label.checkbox input { width: auto; margin: 0; }

input[type="text"], input[type="password"], input[type="number"], textarea {
  width: 100%;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}

textarea { resize: vertical; font-family: ui-monospace, monospace; font-size: 13px; }

input:focus, textarea:focus { outline: 2px solid var(--accent); }

button, .danger {
  margin-top: 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

button.danger, .danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  margin-top: 0;
  padding: 6px 12px;
  font-size: 12px;
}

hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

.form-card, .config-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 20px;
}

.config-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.config-card pre {
  background: var(--card-alt);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
  font-size: 12px;
  margin: 0;
}

.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.alert.success { background: rgba(105, 240, 174, 0.12); color: var(--success); border: 1px solid rgba(105, 240, 174, 0.3); }
.alert.error { background: rgba(255, 82, 82, 0.12); color: var(--danger); border: 1px solid rgba(255, 82, 82, 0.3); }
.error { color: var(--danger); font-size: 13px; }

/* ── Dashboard ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 20px 0 28px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.stat-value { font-size: 28px; font-weight: 800; }
.stat-label { color: var(--text-secondary); font-size: 12px; font-weight: 600; margin-top: 4px; }

.chart-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

/* ── Data tables ── */
.table-scroll {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

.data-table th.num, .data-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.data-table td.truncate {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.015); }
.data-table tbody tr:hover { background: var(--card-alt); }