:root {
  --tapee-navy: #123c7c;
  --tapee-blue: #0f68b1;
  --tapee-gold: #f4b400;
  --tapee-teal: #0f9f8f;
  --tapee-ink: #172033;
  --tapee-muted: #667085;
  --tapee-line: #d9e2ef;
  --page-bg: #f4f7fb;
}

body {
  background: var(--page-bg);
  color: var(--tapee-ink);
  text-rendering: optimizeLegibility;
}

.login-bg {
  background: linear-gradient(135deg, #f4f7fb 0%, #eef5fc 100%);
}

.font-prompt { font-family: "Prompt", sans-serif; }
.font-sarabun { font-family: "Sarabun", sans-serif; }

.navbar {
  background: linear-gradient(90deg, var(--tapee-navy), var(--tapee-blue));
  min-height: 60px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 8px;
}

.sidebar {
  position: fixed;
  top: 60px;
  bottom: 0;
  left: 0;
  background: #fff;
  border-right: 1px solid rgba(18, 60, 124, .08);
  padding-top: 1rem;
}

.sidebar-inner {
  position: sticky;
  top: 76px;
}

.sidebar .nav-link {
  border-radius: 8px;
  color: var(--tapee-ink);
  font-family: "Prompt", sans-serif;
  font-weight: 500;
  padding: .85rem 1rem;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  background: #eef5fc;
  color: var(--tapee-blue);
}

.sidebar .nav-link.active {
  border-left: 4px solid var(--tapee-gold);
}

.main-content {
  padding-top: 1rem;
}

.card,
.form-control,
.form-select,
.input-group-text,
.btn,
.alert,
.modal-content,
.dropdown-menu {
  border-radius: 8px !important;
}

.card {
  border: 1px solid rgba(18, 60, 124, .08);
  box-shadow: 0 12px 32px rgba(16, 24, 40, .07);
}

.btn-primary,
.bg-primary {
  background-color: var(--tapee-blue) !important;
  border-color: var(--tapee-blue) !important;
}

.text-primary {
  color: var(--tapee-blue) !important;
}

.metric {
  border-left: 5px solid var(--tapee-gold);
}

.table thead th {
  color: var(--tapee-muted);
  font-family: "Prompt", sans-serif;
  font-weight: 500;
}

@media (min-width: 768px) {
  .main-content { margin-left: 25%; }
}

@media (min-width: 992px) {
  .main-content { margin-left: 16.666667%; }
}

@media (max-width: 767.98px) {
  .sidebar {
    position: static;
    border-right: 0;
  }
  .main-content {
    margin-left: 0;
  }
  .navbar-brand {
    font-size: .98rem;
    white-space: normal;
    line-height: 1.3;
  }
}