/* container + sections */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(14px, 3vw, 28px);
}

/* green floating container look */
.panel {
  background: var(--surface-3);
  color: var(--nav-ink);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 28px);
}

.section {
  padding-block: clamp(36px, 6vw, 80px);
  background: var(--surface-1);
  border-bottom: 1px solid var(--surface-border);
}
.section.is-alt {
  background: var(--surface-2);
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
}

/* headings accent bar */
.heading-bar {
  width: 56px; height: 3px;
  background: var(--accent);
  border-radius: 3px;
  margin: 10px 0 18px;
}

/* grid helpers */
.grid { display: grid; gap: clamp(14px, 2.6vw, 28px); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* under construction section (dark theme fix) */
.under-construction {
  text-align: center;
  padding: clamp(2rem, 6vw, 4rem) 1rem;
}

.construction-note .card {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.construction-note h2 {
  color: var(--ink);
}

.construction-note p,
.construction-note li,
.construction-note summary {
  color: var(--ink);
  opacity: 0.9;
}

.construction-note summary:hover {
  cursor: pointer;
  text-decoration: underline;
}

/* buttons */
.btn {
  background: var(--accent);
  color: var(--accent-ink);
  transition: bg 0.2s ease;
}

.btn:hover {
  background: var(--accent-ink);
  color: var(--accent);
}

.btn.secondary {
  background: transparent;
  color: var(--ink);
}

.btn.secondary:hover {
  background: rgba(255,255,255,0.08);
}

.section {
  padding-block: clamp(3rem, 6vw, 5rem); /* gives balanced top/bottom spacing */
}

.panel {
  margin-top: 3rem;
}