/* BAP welcome packet — yellow draft styles */

.bap-page {
  --bap-max: 1100px;
}

.yellow-banner {
  background: #fff6e0;
  color: #9a6b00;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border-bottom: 1px solid #f0e0b0;
  position: sticky;
  top: 0;
  z-index: 30;
}

.bap-page .site-header {
  top: 1.85rem; /* sit below yellow banner */
}

/* Gate */
.bap-gate {
  min-height: 60vh;
  display: grid;
  place-items: center;
  padding: 3rem 0 4rem;
}

.gate-card {
  width: min(100%, 28rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 2rem 1.75rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.04);
  text-align: center;
}

.gate-card h1 {
  max-width: none;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 0.75rem;
}

.gate-lede {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.gate-form {
  display: grid;
  gap: 0.85rem;
  text-align: left;
  margin-bottom: 1rem;
}

.gate-form label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.gate-form input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  padding: 0.7rem 0.85rem;
  font: inherit;
}

.gate-form .btn {
  width: 100%;
  margin-top: 0.25rem;
}

.gate-error {
  color: #b42318;
  font-size: 0.85rem;
  margin: 0;
}

/* Layout after unlock */
.bap-app {
  /* padding-bottom set with Q&A panel below */
}

.bap-layout {
  width: min(100% - 2.5rem, var(--bap-max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: start;
  padding-top: 1.5rem;
}

.toc-sticky {
  position: sticky;
  top: 5.5rem;
  max-height: calc(100vh - 6.5rem);
  overflow: auto;
  padding-right: 0.35rem;
}

.toc-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.65rem;
}

.toc-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toc-nav a {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.35;
  padding: 0.2rem 0.35rem;
  border-radius: 6px;
  border-left: 2px solid transparent;
}

.toc-nav a:hover,
.toc-nav a:focus-visible {
  color: var(--text);
  background: var(--accent-soft);
}

.toc-nav a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.packet-hero {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.packet-hero h1 {
  max-width: none;
  text-align: left;
  margin: 0 0 0.5rem;
}

.packet-section {
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 5.5rem;
}

.packet-section:first-of-type {
  border-top: none;
  padding-top: 0;
}

.bap-article h2 {
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  margin: 0 0 1rem;
  color: var(--accent);
}

.bap-article h3 {
  margin: 1.35rem 0 0.5rem;
  font-size: 1.05rem;
  scroll-margin-top: 5.5rem;
}

.bap-article p {
  margin: 0 0 0.85rem;
  color: var(--text);
  max-width: 65ch;
}

.bap-article ul,
.bap-article ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  max-width: 65ch;
  color: var(--text);
}

.bap-article li {
  margin-bottom: 0.35rem;
}

/* Mobile: top TOC as horizontal chips */
@media (max-width: 860px) {
  .bap-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .bap-toc {
    order: -1;
  }

  .toc-sticky {
    position: sticky;
    top: 4.75rem;
    z-index: 15;
    max-height: none;
    overflow: visible;
    background: rgba(247, 246, 243, 0.95);
    backdrop-filter: blur(8px);
    padding: 0.65rem 0 0.75rem;
    border-bottom: 1px solid var(--line);
    margin: 0 -0.25rem;
  }

  .toc-nav {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.4rem;
    padding-bottom: 0.25rem;
    -webkit-overflow-scrolling: touch;
  }

  .toc-nav a {
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 0.78rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.35rem 0.7rem;
    border-left: 1px solid var(--line);
    background: var(--surface);
  }

  .toc-nav a.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
  }

  .packet-section {
    scroll-margin-top: 8.5rem;
  }

  .bap-article h3 {
    scroll-margin-top: 8.5rem;
  }
}

@media (max-width: 720px) {
  .bap-page .nav-links a:not(.btn) {
    display: none;
  }
}

/* Ask-the-doc Q&A panel (yellow draft · citations only) */
.bap-app {
  padding-bottom: 11rem;
}

.bap-qa {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 40;
  width: min(100% - 2rem, 26rem);
  max-height: min(52vh, 28rem);
  display: flex;
  flex-direction: column;
  background: #fffdf5;
  border: 1px solid #e8c96a;
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(90, 60, 0, 0.14);
  overflow: hidden;
}

.bap-qa.is-collapsed {
  max-height: none;
}

.bap-qa.is-collapsed .bap-qa-body {
  display: none;
}

.bap-qa-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: #fff6e0;
  border-bottom: 1px solid #f0e0b0;
}

.bap-qa-header h2 {
  margin: 0;
  font-size: 0.92rem;
  color: #9a6b00;
  font-weight: 700;
}

.bap-qa-badge {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #9a6b00;
  background: #ffe9a8;
  border-radius: 999px;
  padding: 0.15rem 0.45rem;
  vertical-align: middle;
}

.bap-qa-toggle {
  flex: 0 0 auto;
  border: 1px solid #e8c96a;
  background: #fff;
  color: #9a6b00;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
}

.bap-qa-toggle:hover,
.bap-qa-toggle:focus-visible {
  background: #fff6e0;
}

.bap-qa-body {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

.bap-qa-status {
  margin: 0;
  padding: 0.35rem 0.85rem 0;
  font-size: 0.72rem;
  color: #9a6b00;
}

.bap-qa-messages {
  flex: 1;
  min-height: 7rem;
  max-height: 14rem;
  overflow: auto;
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.bap-qa-msg {
  font-size: 0.84rem;
  line-height: 1.45;
  border-radius: 12px;
  padding: 0.55rem 0.7rem;
  max-width: 100%;
}

.bap-qa-msg p {
  margin: 0 0 0.4rem;
  max-width: none;
}

.bap-qa-msg p:last-child {
  margin-bottom: 0;
}

.bap-qa-msg--user {
  align-self: flex-end;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
}

.bap-qa-msg--bot {
  align-self: stretch;
  background: #fffaf0;
  border: 1px solid #f0e0b0;
  color: var(--text);
}

.bap-qa-excerpt {
  margin: 0 0 0.65rem;
  padding: 0;
  border: none;
}

.bap-qa-excerpt:last-child {
  margin-bottom: 0;
}

.bap-qa-cite {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.75rem;
  font-style: normal;
  color: var(--muted);
}

.bap-qa-cite a {
  color: var(--accent);
  font-weight: 600;
}

.bap-qa-cite a::before {
  content: "Source: ";
  color: var(--muted);
  font-weight: 500;
}

.bap-qa-form {
  display: flex;
  gap: 0.45rem;
  padding: 0.65rem 0.85rem 0.85rem;
  border-top: 1px solid #f0e0b0;
  background: #fffdf5;
}

.bap-qa-form input {
  flex: 1;
  min-width: 0;
  border-radius: 10px;
  border: 1px solid #e8c96a;
  background: #fff;
  color: var(--text);
  padding: 0.55rem 0.7rem;
  font: inherit;
  font-size: 0.85rem;
}

.bap-qa-form .btn {
  flex: 0 0 auto;
  padding: 0.55rem 0.85rem;
  font-size: 0.82rem;
}

@media (max-width: 860px) {
  .bap-app {
    padding-bottom: 10rem;
  }

  .bap-qa {
    right: 0.65rem;
    left: 0.65rem;
    bottom: 0.65rem;
    width: auto;
    max-height: min(48vh, 24rem);
  }
}


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

.bap-qa-cites { margin: 0.35rem 0 0; font-size: 0.8rem; color: var(--muted, #5c5c5c); }
.bap-qa-cites a { color: var(--accent, #1f6b5a); }
.bap-qa-pending { opacity: 0.7; font-style: italic; }