html, body { height: 100%; }
body { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1 0 auto; }

.container {
  width: 100%; max-width: 1200px; padding: 0 16px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.75rem;
}

#intro-section h1 {
  font-size: 2.8rem;
  margin: 1.25rem 0 .5rem;
  color: var(--color-text-primary);
}
#intro-section p {
  font-size: 1.1rem;
  color: var(--color-text-subtle);
}

#page-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
#page-navigation a {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid var(--color-accent);
  border-radius: 5px;
  background-color: transparent;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
}
#page-navigation a:hover {
  background-color: var(--color-accent);
  color: var(--color-text-primary);
}

.gantt-section {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto 2.5rem;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

footer { position: static !important; margin-top: auto; }
.gantt-root .card,
.gantt-root .grid-static,
.gantt-root .card-header,
.gantt-root .header-grid {
  background: #fff !important;
  border-color: #E5E7EB !important;
}

.gantt-root,
.gantt-root * {
  color: #111827 !important;
}

.gantt-root .legend-item,
.gantt-root .month-badge,
.gantt-root .tw-badge {
  background: #fff !important;
  border-color: #E5E7EB !important;
}

.gantt-root .task-chip {
  background: #F3F4F6 !important;
  color: #111827 !important;
  border-color: #E5E7EB !important;
}
.gantt-root .head-tasks {
  background: #fff !important;
  color: #111827 !important;
  border-color: #E5E7EB !important;
}

.gantt-root .wk-col      { background:#fff !important;   border-left:1px solid #E5E7EB !important; }
.gantt-root .wk-col.alt  { background:#F8FAFC !important; }