/* กำแพงบ่น — scoped styles, layered on assets/style.css
   Post-it design mirrors the real app 1:1 (see app/src/index.css .postit*)
   so the public preview and the in-app board never look like two products. */

.vent-hero { padding: 140px 0 40px; text-align: center; }
.vent-hero-inner { max-width: 680px; margin: 0 auto; }
.vent-hero h1 { font-size: clamp(28px, 4.4vw, 42px); margin-bottom: 14px; }
.vent-hero p { font-size: 16px; }

.vent-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  padding: 8px 0 40px;
}
.vent-chip {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.vent-chip:hover { border-color: var(--accent); }
.vent-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

/* ---------- Post-it board (same rules as the real app) ---------- */
.vent-board {
  columns: 3 260px;
  column-gap: 16px;
  padding-bottom: 30px;
}
@media (max-width: 900px) { .vent-board { columns: 2 220px; } }
@media (max-width: 600px) { .vent-board { columns: 1; } }

.postit {
  display: block;
  break-inside: avoid;
  margin-bottom: 16px;
  background: var(--postit-color, #F6DE85);
  color: #3A2E1E;
  border-radius: 4px;
  padding: 18px 16px 14px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.18);
  position: relative;
}
.postit-0 { transform: rotate(-1.2deg); }
.postit-1 { transform: rotate(1.4deg); }
.postit-2 { transform: rotate(-0.6deg); }
.postit-3 { transform: rotate(1.8deg); }
.postit-4 { transform: rotate(-1.6deg); }

.postit-tape {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%) rotate(-3deg);
  width: 56px;
  height: 20px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.postit-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 13.5px;
  margin-bottom: 10px;
}
.postit-sample-badge {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 600;
  color: #3A2E1E;
  background: rgba(255, 255, 255, 0.5);
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.postit-body {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}
.postit-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 11.5px;
  opacity: 0.75;
}
.postit-foot-stats { display: flex; gap: 10px; font-weight: 600; }

.vent-cta {
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius, 16px);
  padding: 32px 24px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}
.vent-cta h2 { font-size: 22px; margin-bottom: 8px; }
.vent-cta p { margin-bottom: 20px; }

.vent-note {
  max-width: 640px;
  margin: 0 auto 50px;
  font-size: 13.5px;
  color: var(--text-muted);
  text-align: center;
}