:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #1d4ed8;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

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

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  margin: 0;
  font-size: 1.25rem;
}

.logout-link {
  color: var(--accent);
  text-decoration: none;
}

.page-shell {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
}

.section-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.section-header h2 {
  margin-top: 0;
  margin-bottom: 0.25rem;
}

.muted {
  color: var(--muted);
  margin: 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.metric-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem;
  background: #fff;
}

.metric-label {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.metric-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.controls-row,
.controls-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.75rem;
  margin-bottom: 1rem;
}

.controls-grid {
  grid-template-columns: 1fr;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
}

input,
button {
  font: inherit;
}

input {
  padding: 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
}

button {
  border: none;
  border-radius: 10px;
  padding: 0.8rem 1rem;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

.simple-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.95rem;
}

.simple-table th,
.simple-table td {
  text-align: left;
  padding: 0.7rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.summary-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem;
}

.login-wrap {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.error-box {
  color: var(--danger);
  background: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: 10px;
  padding: 0.75rem;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.simple-table {
  min-width: 760px;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .controls-row {
    grid-template-columns: 240px auto;
    align-items: end;
  }

  .controls-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .simple-table {
    font-size: 0.88rem;
  }

  .simple-table th,
  .simple-table td {
    padding: 0.55rem 0.4rem;
    white-space: nowrap;
  }
}