:root {
  --ink: #0d0d0d;
  --paper: #f5f3ee;
  --paper-dim: #e8e4da;
  --line: #cfc9ba;
  --accent: #6b4a2f;
  --accent-bright: #8a6239;
  --danger: #8a1f11;
  --sidebar-w: 300px;
  --topbar-h: 64px;
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
}

body {
  min-height: 100vh;
}

a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }

.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;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: var(--ink);
  color: var(--paper);
  z-index: 40;
}

.menu-toggle {
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 0;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--paper);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.brand {
  font-family: "Trajan Pro", "Cinzel", Georgia, serif;
  letter-spacing: 0.12em;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--paper);
}

.topbar-auth {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
}

.auth-greeting { opacity: 0.8; }

.auth-link {
  text-decoration: none;
  color: var(--paper);
  background: none;
  border: 1px solid rgba(245, 243, 238, 0.35);
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
}

.auth-link-primary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.logout-form { margin: 0; }

.sidebar {
  position: fixed;
  top: 0; bottom: 0; left: calc(var(--sidebar-w) * -1);
  width: var(--sidebar-w);
  background: var(--ink);
  color: var(--paper);
  padding-top: calc(var(--topbar-h) + 20px);
  overflow-y: auto;
  transition: left 0.25s ease;
  z-index: 50;
}

.sidebar.open { left: 0; }

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 45;
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0 0 40px 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
}

.nav-item { border-bottom: 1px solid rgba(245,243,238,0.12); }

.nav-item summary,
.nav-top-link {
  display: block;
  padding: 14px 24px;
  cursor: pointer;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--paper);
}

.nav-item summary::-webkit-details-marker { display: none; }
.nav-item summary::after {
  content: "+";
  float: right;
}
.nav-item details[open] summary::after { content: "\2212"; }

.nav-sublist {
  list-style: none;
  margin: 0;
  padding: 0 0 12px 36px;
}

.nav-sublist li a {
  display: block;
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--paper-dim);
  text-decoration: none;
}

.nav-sublist li a:hover { color: var(--paper); }

.content {
  padding-top: calc(var(--topbar-h) + 40px);
  max-width: 860px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  padding-bottom: 80px;
}

h1 {
  font-size: 2.4rem;
  margin-bottom: 0.3em;
}

.page-lede {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.05rem;
  color: #333;
  max-width: 68ch;
}

.card {
  border: 1px solid var(--line);
  padding: 20px 24px;
  margin-bottom: 16px;
  background: #fff;
}

.form-page { max-width: 420px; }

.field { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; font-family: "Helvetica Neue", Arial, sans-serif; }
.field label { font-size: 0.85rem; }
.field input, .field textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.btn {
  font-family: "Helvetica Neue", Arial, sans-serif;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  font-size: 0.95rem;
}

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

.error-banner {
  background: #fbeceb;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 10px 14px;
  margin-bottom: 16px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9rem;
}

.thread-list, .post-list, .conversation-list { list-style: none; padding: 0; margin: 0; }

.thread-list li, .conversation-list li {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
}

.thread-list a, .conversation-list a { text-decoration: none; font-size: 1.05rem; }
.thread-meta { font-size: 0.8rem; color: #666; margin-top: 4px; }

.post {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
}
.post-header { display: flex; align-items: center; gap: 8px; }
.post-avatar { border-radius: 50%; object-fit: cover; }
.post-author { font-weight: bold; font-size: 0.9rem; }
.post-time { font-size: 0.78rem; color: #666; margin-left: 8px; }
.post-body { margin-top: 8px; white-space: pre-wrap; line-height: 1.5; }
.post-attachment { display: block; max-width: 100%; max-height: 480px; margin-top: 12px; border: 1px solid var(--line); }

.dm-messages {
  border: 1px solid var(--line);
  background: #fff;
  height: 420px;
  overflow-y: auto;
  padding: 16px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  margin-bottom: 12px;
}

.dm-msg { margin-bottom: 10px; }
.dm-msg .who { font-size: 0.75rem; color: #666; }
.dm-msg .body { font-size: 0.95rem; }
.dm-msg.mine .body { text-align: right; }

.dm-compose { display: flex; gap: 8px; }
.dm-compose input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--line);
  font-family: inherit;
  font-size: 1rem;
}

.badge {
  display: inline-block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border: 1px solid var(--line);
  margin-left: 8px;
}

.staff-link { border-color: var(--accent-bright); }

@media (max-width: 640px) {
  :root { --sidebar-w: 85vw; }
  .content { padding-left: 18px; padding-right: 18px; }
  .auth-greeting { display: none; }
  .topbar { gap: 10px; padding: 0 14px; }
  .brand { font-size: 0.85rem; white-space: nowrap; }
  .auth-link { padding: 6px 9px; font-size: 0.78rem; }
}