:root {
  --sh-ink: #1a2332;
  --sh-accent: #0d6e6e;
  --sh-accent-2: #c45c26;
  --sh-surface: #ffffff;
  --sh-muted: #6b7280;
  --sh-line: #e5e7eb;
  --sh-bg: #f3f5f7;
}

body {
  color: var(--sh-ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(13, 110, 110, 0.08), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(196, 92, 38, 0.06), transparent 55%),
    var(--sh-bg);
  font-family: "Segoe UI", "PT Sans", "Helvetica Neue", sans-serif;
}

.auth-body {
  background:
    linear-gradient(145deg, #12343b 0%, #1a2332 45%, #2b1d17 100%);
}

.navbar-brand {
  letter-spacing: 0.02em;
}

.panel {
  background: var(--sh-surface);
  border: 1px solid var(--sh-line);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.kpi-card {
  background: linear-gradient(180deg, #fff, #f8fafb);
  border: 1px solid var(--sh-line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  height: 100%;
}

.kpi-label {
  color: var(--sh-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-value {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 0.25rem;
  color: var(--sh-ink);
}

.btn-primary {
  background-color: var(--sh-accent);
  border-color: var(--sh-accent);
}

.btn-primary:hover {
  background-color: #0a5858;
  border-color: #0a5858;
}

.nav-tabs .nav-link.active {
  font-weight: 600;
  color: var(--sh-accent);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-head {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--sh-muted);
  text-align: center;
  padding: 0.35rem;
}

.calendar-cell {
  min-height: 84px;
  border: 1px solid var(--sh-line);
  border-radius: 8px;
  padding: 0.4rem;
  background: #fff;
}

.calendar-cell.empty {
  background: transparent;
  border-color: transparent;
}

.calendar-cell.has-pay {
  border-color: rgba(13, 110, 110, 0.35);
  background: rgba(13, 110, 110, 0.06);
}

.day-num {
  font-weight: 600;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .kpi-value { font-size: 1.05rem; }
  .calendar-cell { min-height: 64px; }
}