/* ── Brand color tokens (FSI-optimized Microsoft palette) ── */
:root {
  --brand-primary:      #0078D4;
  --brand-primary-dark: #005A9E;
  --brand-accent:       #007A7E;
  --brand-accent-vivid: #00B7C3;
  --brand-surface:      #F3F2F1;
  --brand-text:         #201F1E;
  --brand-subtle:       #605E5C;
}

[data-md-color-scheme="default"] {
  --md-primary-fg-color:        var(--brand-primary);
  --md-primary-fg-color--light: #2B88D8;
  --md-primary-fg-color--dark:  var(--brand-primary-dark);
  --md-accent-fg-color:         var(--brand-accent);
  --md-default-bg-color:        #FFFFFF;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color:        #429CE3;
  --md-accent-fg-color:         #3DD6E0;
  --md-default-bg-color:        #1B1A19;
  --brand-primary:              #429CE3;
  --brand-primary-dark:         #005A9E;
  --brand-accent:               #3DD6E0;
  --brand-surface:              #2D2C2B;
  --brand-text:                 #F3F2F1;
  --brand-subtle:               #A19F9D;
}

.hero {
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
  color: #fff;
  border-radius: 8px;
  margin-bottom: 2rem;
}
.hero h1 { font-size: 2.5rem; font-weight: 700; color: #fff; }
.hero p { font-size: 1.1rem; opacity: 0.95; max-width: 600px; margin: 0.75rem auto 1.5rem; }
[data-md-color-scheme="slate"] .hero {
  background: linear-gradient(135deg, #005A9E 0%, #003A70 100%);
}

.hero .md-button--primary {
  background-color: #fff !important;
  color: var(--brand-primary) !important;
  border-color: transparent !important;
  font-weight: 600;
}
.hero .md-button--primary:hover { background-color: var(--brand-surface) !important; }
.hero .md-button:not(.md-button--primary) {
  border-color: rgba(255,255,255,0.6) !important;
  color: #fff !important;
}

.metrics-strip {
  display: flex; justify-content: center; gap: 3rem;
  padding: 2rem 1rem; background: var(--brand-surface);
  border-radius: 8px; margin: 0 0 0.5rem;
}
.metric { text-align: center; }
.metric-number { display: block; font-size: 2.5rem; font-weight: 700; color: var(--brand-primary); }
.metric-label { font-size: 0.9rem; color: var(--brand-subtle); }
.metrics-regulations {
  text-align: center; color: var(--brand-subtle);
  margin-top: 0; margin-bottom: 2rem; font-size: 0.9rem;
}

.arch-diagram { max-width: 720px; margin: 1.5rem auto 2rem; }
.arch-layer { background: var(--brand-surface); border-radius: 8px; padding: 1rem 1rem 1.25rem; text-align: center; }
.arch-label { font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--brand-subtle); margin-bottom: 0.75rem; }
.arch-row { display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap; }
.arch-card { min-width: 120px; flex: 1 1 120px; max-width: 160px; padding: 0.75rem 0.5rem; border-radius: 6px; font-size: 0.85rem; line-height: 1.3; text-align: center; color: #fff; }
.arch-card strong { display: block; margin-bottom: 0.15rem; }
.arch-zone { background: var(--brand-primary); }
.arch-pillar { background: var(--brand-accent); }
.arch-reg { background: var(--brand-primary-dark); }
.arch-arrow { text-align: center; font-size: 1.5rem; line-height: 1; padding: 0.4rem 0; color: var(--brand-subtle); }

.md-typeset p > strong:first-child { color: var(--md-primary-fg-color); }
.md-typeset br + strong { display: inline-block; margin-top: 0.4em; color: var(--md-primary-fg-color); }

@media (max-width: 600px) {
  .hero { padding: 2.5rem 1rem; }
  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: 1rem; }
  .metrics-strip { flex-wrap: wrap; gap: 1.5rem; }
  .metric-number { font-size: 2rem; }
  .arch-card { min-width: 80px; max-width: 140px; font-size: 0.8rem; }
}

/* Print-friendly checkboxes */
@media print {
  .task-list-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-right: 8px;
  }
  .task-list-item {
    list-style: none;
    margin-left: 0;
  }
}