:root {
  --bg: #e8eaee;
  --card: #ffffff;
  --text: #1a1d24;
  --muted: #6b7280;
  --green: #16a34a;
  --red: #dc2626;
  --bar: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }

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

a { color: inherit; text-decoration: none; }

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-only {
  display: flex;
  gap: 10px;
}

.admin-only.hidden {
  display: none;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  background: #111827;
  color: #fff;
}

.btn.secondary {
  background: #fff;
  color: #111827;
  border: 1px solid #d1d5db;
}

.total-bar {
  background: var(--bar);
  color: #fff;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}

.total-bar .label {
  font-size: 0.78rem;
  opacity: 0.75;
  margin-bottom: 6px;
}

.total-bar .value {
  font-size: 1.35rem;
  font-weight: 700;
}

.cards {
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid #eef0f3;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.badge.green { background: #dcfce7; color: #166534; }
.badge.red { background: #fee2e2; color: #991b1b; }
.badge.blue { background: #dbeafe; color: #1d4ed8; }
.badge.gray { background: #f3f4f6; color: #374151; }

.card-time {
  color: var(--muted);
  font-size: 0.85rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: #eef0f3;
}

.card-grid.secondary {
  grid-template-columns: repeat(4, 1fr);
}

.metric {
  background: #fff;
  padding: 16px 18px;
}

.metric .label {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 8px;
}

.metric .value {
  font-size: 1.2rem;
  font-weight: 700;
}

.pos { color: var(--green); }
.neg { color: var(--red); }
.muted { color: var(--muted); }

.card-error {
  padding: 14px 18px;
  background: #fef2f2;
  color: #991b1b;
  font-size: 0.92rem;
  border-bottom: 1px solid #fecaca;
}

.card-error-text {
  margin: 8px 0 0;
  padding: 0;
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: visible;
}

.card-offline .card-grid .value {
  color: var(--muted);
}

.status-line {
  color: var(--muted);
  font-size: 0.9rem;
}

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}

.auth-card h1 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.auth-card p {
  margin: 0 0 20px;
  color: var(--muted);
}

.field {
  margin-bottom: 14px;
}

.field label {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 6px;
  color: var(--muted);
}

.field input,
.field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  font: inherit;
}

.settings-grid {
  display: grid;
  gap: 16px;
}

.account-box {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px;
}

.account-box h3 {
  margin: 0 0 12px;
}

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.msg {
  margin-top: 12px;
  font-size: 0.92rem;
}

.msg.error { color: var(--red); }
.msg.ok { color: var(--green); }

.hint {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--muted);
}

@media (max-width: 800px) {
  .total-bar,
  .card-grid,
  .card-grid.secondary,
  .row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .total-bar,
  .card-grid,
  .card-grid.secondary,
  .row-2 {
    grid-template-columns: 1fr;
  }
}