/* Townbrief Chat — dark-friendly, minimal chat UI. */
:root {
  --bg: #0f1115;
  --bg-elev: #171923;
  --bg-elev-2: #1e2130;
  --border: #262a38;
  --text: #e6e8ee;
  --text-dim: #9aa0af;
  --text-faint: #6b7280;
  --accent: #d97706;      /* Townbrief amber */
  --accent-2: #fbbf24;
  --user-bubble: #1e2130;
  --assistant-bubble: transparent;
  --danger: #ef4444;
  --ok: #22c55e;
  --radius: 10px;
  --sidebar-w: 280px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaf7;
    --bg-elev: #ffffff;
    --bg-elev-2: #f3f2ec;
    --border: #e4e2d8;
    --text: #1a1a1a;
    --text-dim: #5a5a5a;
    --text-faint: #8a8a8a;
    --user-bubble: #f3f2ec;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Login page ---------- */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 24px;
}
.login-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 32px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}
.brand {
  display: flex; align-items: center; gap: 12px; margin-bottom: 14px;
}
.brand h1 { font-size: 22px; margin: 0; font-weight: 700; letter-spacing: -0.01em; }
.brand.small { font-size: 14px; font-weight: 600; }
.brand.small span { color: var(--text); }
a.brand.small {
  text-decoration: none; color: inherit; cursor: pointer;
  border-radius: 8px; margin: -4px -4px 10px; padding: 4px;
  transition: background 0.12s;
}
a.brand.small:hover { background: var(--bg-elev-2); }
.brand-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a1a1a; font-weight: 800; font-size: 13px;
  display: flex; align-items: center; justify-content: center;
}
.lede {
  color: var(--text-dim); margin: 0 0 24px 0; font-size: 14px;
}
#login-form label {
  display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px;
}
#login-form input {
  width: 100%; padding: 10px 12px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 15px; margin-bottom: 12px;
  transition: border-color 0.15s;
}
#login-form input:focus { outline: none; border-color: var(--accent); }
#login-form button {
  width: 100%; padding: 10px 16px;
  background: var(--accent); color: #1a1a1a;
  border: none; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
#login-form button:hover:not(:disabled) { background: var(--accent-2); }
#login-form button:disabled { opacity: 0.6; cursor: not-allowed; }
.msg { min-height: 20px; margin: 12px 0 0; font-size: 13px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--danger); }
.fine {
  margin: 20px 0 0; font-size: 12px; color: var(--text-faint); text-align: center;
}

/* ---------- App layout ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
}
.sidebar {
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.sidebar-head {
  padding: 16px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.new-chat {
  width: 100%; margin-top: 10px;
  background: transparent; color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 12px; cursor: pointer; font-size: 14px;
  transition: background 0.15s, border-color 0.15s;
}
.new-chat:hover { background: var(--bg-elev-2); border-color: var(--accent); }
.chat-list {
  flex: 1; overflow-y: auto; padding: 8px;
}

/* Section headers ("Projects", "Chats") */
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 10px 4px;
  font-size: 11px; font-weight: 600;
  color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.06em;
  user-select: none;
}
.section-add {
  background: none; border: 1px solid transparent; border-radius: 6px;
  color: var(--text-faint); font-size: 14px; line-height: 1;
  width: 20px; height: 20px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.section-add:hover { color: var(--accent); border-color: var(--border); }
.section-empty {
  padding: 4px 10px 8px; font-size: 12px; color: var(--text-faint);
  font-style: italic;
}
.section-empty.indented { padding-left: 32px; }

/* Project rows */
.project-row {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text-dim); cursor: pointer;
  font-size: 14px;
  user-select: none;
  transition: background 0.1s, color 0.1s;
}
.project-row:hover { background: var(--bg-elev-2); color: var(--text); }
.chev {
  font-size: 10px; width: 10px; color: var(--text-faint);
  transition: transform 0.12s;
  display: inline-block;
}
.chev.open { transform: rotate(90deg); }
.project-icon { color: var(--accent); font-size: 12px; }
.project-name {
  flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-weight: 500;
}

/* Chat rows */
.chat-item {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text-dim); cursor: pointer;
  font-size: 14px;
  overflow: hidden;
  transition: background 0.1s, color 0.1s;
}
.chat-item.indented { margin-left: 18px; }
.chat-item:hover { background: var(--bg-elev-2); color: var(--text); }
.chat-item.active { background: var(--bg-elev-2); color: var(--text); }
.chat-item-title {
  flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* Kebab (options) buttons */
.kebab {
  opacity: 0; background: none; border: none; color: var(--text-faint);
  cursor: pointer; padding: 0 4px; font-size: 15px; line-height: 1;
  border-radius: 5px; flex: 0 0 auto;
}
.chat-item:hover .kebab, .project-row:hover .kebab { opacity: 1; }
.kebab:hover { color: var(--text); background: var(--bg); }
/* Touch devices have no hover — always show the options button. */
@media (hover: none) { .kebab { opacity: 1; } }

/* Context menu */
.ctx-menu {
  position: fixed; z-index: 100;
  min-width: 180px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 5px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.35);
}
.ctx-item {
  display: block; width: 100%; text-align: left;
  background: none; border: none;
  color: var(--text); font-size: 13.5px;
  padding: 7px 10px; border-radius: 6px; cursor: pointer;
}
.ctx-item:hover { background: var(--bg-elev-2); }
.ctx-item.danger { color: var(--danger); }
.ctx-sep { height: 1px; background: var(--border); margin: 4px 6px; }

.sidebar-foot {
  padding: 12px 14px; border-top: 1px solid var(--border);
  font-size: 12px;
}
.meter { margin-bottom: 10px; }
.meter-labels {
  display: flex; justify-content: space-between;
  color: var(--text-dim); font-size: 11px; margin-bottom: 4px;
}
.meter-bar {
  height: 6px; background: var(--bg-elev-2); border-radius: 3px; overflow: hidden;
}
.meter-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
  transition: width 0.5s;
}
.meter-fill.warn { background: var(--danger); }
.user-row {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
.user-email {
  color: var(--text-dim); font-size: 12px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.linkish {
  background: none; border: none; color: var(--accent);
  font-size: 12px; cursor: pointer; padding: 0;
}
.linkish:hover { text-decoration: underline; }

/* ---------- Chat main ---------- */
.chat-main {
  display: flex; flex-direction: column;
  height: 100vh;
  overflow: hidden;
}
.chat-head {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
}
.chat-head h2 {
  margin: 0; font-size: 16px; font-weight: 600;
  flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.head-actions { display: flex; gap: 8px; }
.head-btn {
  background: transparent; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 12px; font-size: 12.5px; cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}
.head-btn:hover { color: var(--text); border-color: var(--accent); }
.sidebar-toggle {
  display: none;
  background: none; border: 1px solid var(--border);
  color: var(--text); border-radius: 6px;
  width: 32px; height: 32px; cursor: pointer;
}

.transcript {
  flex: 1; overflow-y: auto; padding: 24px;
  display: flex; flex-direction: column; gap: 20px;
}
.transcript-inner {
  max-width: 780px; margin: 0 auto; width: 100%;
  display: flex; flex-direction: column; gap: 26px;
  padding-bottom: 12px;
}
.msg-row { display: flex; flex-direction: column; gap: 6px; }
.msg-row.user { align-items: flex-end; }
.msg-bubble {
  max-width: 640px;
  padding: 11px 16px;
  border-radius: 16px;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.55;
  background: var(--user-bubble);
  border-bottom-right-radius: 4px;
}

/* Assistant layout: avatar + rendered markdown + hover actions */
.assistant-wrap { display: flex; gap: 12px; width: 100%; }
.avatar {
  flex: 0 0 28px; width: 28px; height: 28px;
  border-radius: 7px; margin-top: 2px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a1a1a; font-weight: 800; font-size: 11px;
  display: flex; align-items: center; justify-content: center;
  user-select: none;
}
.assistant-body { flex: 1; min-width: 0; }

.tools-box { display: none; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.tools-box.has-tools { display: flex; }
.tool-badge {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--bg-elev); color: var(--text-dim);
  border-radius: 20px; padding: 3px 11px;
  font-size: 11.5px;
  border: 1px solid var(--border);
}
.tool-badge::before { content: "🔎"; font-size: 10px; }

/* Streaming indicator: three pulsing dots */
.stream-status { display: flex; gap: 4px; padding: 8px 0; }
.stream-status .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.2s ease-in-out infinite;
}
.stream-status .dot:nth-child(2) { animation-delay: 0.2s; }
.stream-status .dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes pulse {
  0%, 100% { opacity: 0.25; transform: scale(0.85); }
  50%      { opacity: 1;    transform: scale(1); }
}

/* Per-message actions (visible on hover, always on touch) */
.msg-actions {
  display: flex; gap: 8px; margin-top: 8px;
  opacity: 0; transition: opacity 0.15s;
}
.assistant-body:hover .msg-actions { opacity: 1; }
@media (hover: none) { .msg-actions { opacity: 1; } }
.action-btn {
  background: transparent; color: var(--text-faint);
  border: 1px solid var(--border); border-radius: 7px;
  padding: 3px 10px; font-size: 12px; cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.action-btn:hover { color: var(--text); border-color: var(--accent); }
.action-btn.copied { color: var(--ok); border-color: var(--ok); }

.stopped-note { color: var(--text-faint); font-size: 12.5px; margin-top: 8px; font-style: italic; }
.error-note { color: var(--danger); font-size: 13px; margin-top: 8px; }

/* ---------- Rendered markdown ---------- */
.md { line-height: 1.62; word-wrap: break-word; overflow-wrap: break-word; }
.md > *:first-child { margin-top: 0; }
.md > *:last-child { margin-bottom: 0; }
.md p { margin: 0 0 12px; }
.md h3, .md h4, .md h5 {
  margin: 20px 0 8px; font-weight: 650; line-height: 1.3;
  letter-spacing: -0.01em;
}
.md h3 { font-size: 18px; }
.md h4 { font-size: 15.5px; }
.md h5 { font-size: 14px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }
.md ul, .md ol { margin: 0 0 12px; padding-left: 24px; }
.md li { margin: 3px 0; }
.md li::marker { color: var(--accent); }
.md a { color: var(--accent-2); text-decoration: none; border-bottom: 1px solid transparent; }
.md a:hover { border-bottom-color: var(--accent-2); }
.md strong { font-weight: 650; }
.md hr { border: none; border-top: 1px solid var(--border); margin: 18px 0; }
.md blockquote {
  margin: 0 0 12px; padding: 8px 14px;
  border-left: 3px solid var(--accent);
  background: var(--bg-elev);
  border-radius: 0 8px 8px 0;
  color: var(--text-dim);
}
.md .inline-code {
  background: var(--bg-elev-2); border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 6px;
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Consolas, monospace;
  font-size: 0.88em;
}

/* Code blocks */
.md .code-block {
  margin: 0 0 12px; border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  background: var(--bg-elev);
}
.md .code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 12px;
  background: var(--bg-elev-2);
  border-bottom: 1px solid var(--border);
  font-size: 11.5px; color: var(--text-faint);
  text-transform: lowercase;
}
.md .code-copy {
  background: none; border: none; color: var(--text-faint);
  font-size: 11.5px; cursor: pointer; padding: 2px 6px;
  border-radius: 5px;
}
.md .code-copy:hover { color: var(--text); background: var(--bg); }
.md .code-copy.copied { color: var(--ok); }
.md pre {
  margin: 0; padding: 12px 14px; overflow-x: auto;
}
.md pre code {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Consolas, monospace;
  font-size: 13px; line-height: 1.55;
}

/* Tables */
.md .table-wrap {
  margin: 0 0 12px; overflow-x: auto;
  border: 1px solid var(--border); border-radius: 10px;
}
.md table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.md th, .md td {
  padding: 8px 13px; text-align: left;
  border-bottom: 1px solid var(--border);
}
.md th {
  background: var(--bg-elev-2); font-weight: 600;
  white-space: nowrap;
}
.md tr:last-child td { border-bottom: none; }
.md tbody tr:hover { background: var(--bg-elev); }

/* ---------- Empty state ---------- */
.empty-state {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px; color: var(--text-dim); padding: 24px;
  text-align: center;
}
.empty-state h3 {
  font-size: 22px; font-weight: 600; color: var(--text); margin: 0 0 4px;
}
.empty-state p { margin: 0 0 24px; }
.suggestions {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  max-width: 640px; width: 100%;
}
.suggestion {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 14px;
  color: var(--text-dim); text-align: left; cursor: pointer;
  font-size: 13px; line-height: 1.4;
  transition: border-color 0.15s, color 0.15s;
}
.suggestion:hover { border-color: var(--accent); color: var(--text); }
@media (max-width: 600px) {
  .suggestions { grid-template-columns: 1fr; }
}

/* ---------- Composer ---------- */
.composer {
  padding: 12px 24px 20px;
  display: flex; flex-direction: column; gap: 8px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.composer-row { display: flex; gap: 8px; }
.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;
}
.attach-btn {
  align-self: flex-end;
  flex: 0 0 auto;
  width: 44px; height: 44px;
  background: transparent; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 12px;
  font-size: 18px; cursor: pointer; line-height: 1;
  transition: color 0.15s, border-color 0.15s;
}
.attach-btn:hover:not(:disabled) { color: var(--text); border-color: var(--accent); }
.attach-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.composer-row > textarea {
  flex: 1;
  padding: 12px 14px;
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-family: inherit; font-size: 15px; line-height: 1.5;
  resize: none;
  max-height: 200px;
  outline: none;
  transition: border-color 0.15s;
}
.composer-row > textarea:focus { border-color: var(--accent); }
.composer-row > button[type="submit"] {
  align-self: flex-end;
  padding: 12px 18px;
  background: var(--accent); color: #1a1a1a;
  border: none; border-radius: 12px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  min-width: 72px;
  transition: background 0.15s;
}
.composer-row > button[type="submit"]:hover:not(:disabled) { background: var(--accent-2); }
.composer-row > button[type="submit"]:disabled { opacity: 0.5; cursor: not-allowed; }
.composer-row > button[type="submit"].stop { background: var(--danger); color: #fff; }
.composer-row > button[type="submit"].stop:hover { background: #dc2626; }

/* Pending attachment chips, shown above the composer before sending */
.pending-attachments {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.pending-chip {
  position: relative;
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 4px 8px 4px 4px;
  font-size: 12px; color: var(--text-dim);
  max-width: 220px;
}
.pending-chip.uploading { opacity: 0.6; }
.pending-chip-thumb {
  width: 28px; height: 28px; border-radius: 6px;
  object-fit: cover; flex: 0 0 auto;
  background: var(--bg-elev-2);
}
.pending-chip-icon {
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--bg-elev-2); color: var(--text-faint);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; flex: 0 0 auto;
}
.pending-chip-name {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pending-chip-remove {
  background: none; border: none; color: var(--text-faint);
  cursor: pointer; font-size: 13px; padding: 0 2px; line-height: 1;
  flex: 0 0 auto;
}
.pending-chip-remove:hover { color: var(--danger); }

/* Attachments rendered inside a sent message */
.msg-attachments {
  display: flex; flex-wrap: wrap; gap: 6px;
  max-width: 320px;
  justify-content: flex-end;
}
.msg-row:not(.user) .msg-attachments { justify-content: flex-start; }
.msg-attachment-thumb {
  width: 96px; height: 96px; object-fit: cover;
  border-radius: 10px; border: 1px solid var(--border);
  cursor: pointer;
}
.msg-attachment-file {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 12px;
  font-size: 12.5px; color: var(--text-dim);
  text-decoration: none; max-width: 200px;
}
.msg-attachment-file:hover { border-color: var(--accent); color: var(--text); }
.msg-attachment-file-name {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ---------- Capabilities guide ---------- */
.guide-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.guide-overlay[hidden] { display: none; }
.guide-panel {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%; max-width: 720px; max-height: 85vh;
  display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}
.guide-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.guide-head h3 { margin: 0; font-size: 17px; font-weight: 650; }
.guide-close {
  background: none; border: none; color: var(--text-faint);
  font-size: 16px; cursor: pointer; padding: 4px 8px; border-radius: 6px;
}
.guide-close:hover { color: var(--text); background: var(--bg-elev-2); }
.guide-body { overflow-y: auto; padding: 16px 20px 24px; }
.guide-loading { color: var(--text-dim); padding: 24px; text-align: center; }
.guide-intro { color: var(--text-dim); font-size: 13.5px; margin: 0 0 16px; }
.guide-card {
  border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 12px;
  background: var(--bg-elev);
}
.guide-card h4 { margin: 0 0 4px; font-size: 14.5px; font-weight: 650; }
.guide-card > p { margin: 0 0 10px; font-size: 13px; color: var(--text-dim); line-height: 1.5; }
.guide-examples { display: flex; flex-wrap: wrap; gap: 6px; }
.guide-example {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 16px; padding: 5px 12px;
  color: var(--text-dim); font-size: 12.5px; cursor: pointer;
  text-align: left;
  transition: color 0.12s, border-color 0.12s;
}
.guide-example:hover { color: var(--text); border-color: var(--accent); }
.guide-tools { margin-top: 6px; }
.guide-tools summary {
  cursor: pointer; color: var(--text-dim); font-size: 13px;
  padding: 8px 2px; user-select: none;
}
.guide-tools summary:hover { color: var(--text); }
.guide-tool-list { display: flex; flex-direction: column; gap: 6px; padding: 8px 2px; }
.guide-tool { display: flex; gap: 10px; font-size: 12.5px; align-items: baseline; }
.guide-tool code {
  flex: 0 0 auto; color: var(--accent-2);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11.5px;
}
.guide-tool span { color: var(--text-dim); }
.guide-link {
  margin-top: 18px;
  background: none; border: none; color: var(--accent-2);
  font-size: 13.5px; cursor: pointer;
}
.guide-link:hover { text-decoration: underline; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 20px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--danger); color: #fff;
  padding: 10px 18px; border-radius: 10px;
  font-size: 13.5px; font-weight: 500;
  box-shadow: 0 8px 28px rgba(0,0,0,0.35);
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 300; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w); z-index: 10;
    transform: translateX(-100%);
    transition: transform 0.2s;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: inline-flex; align-items: center; justify-content: center; }
}

/* ---------- The wall (out of questions) + refill ---------- */
.wall-card {
  margin: 8px 0;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  background: var(--bg-elev-1, rgba(255,255,255,0.03));
  max-width: 520px;
}
.wall-card h4 { margin: 0 0 8px; font-size: 15px; }
.wall-card p { margin: 8px 0; font-size: 14px; line-height: 1.45; }
.wall-btn {
  display: inline-block;
  padding: 9px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #1a1a1a;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.wall-btn:hover:not(:disabled) { background: var(--accent-2); }
.wall-btn:disabled { opacity: 0.6; cursor: default; }
.wall-small { font-size: 12px; opacity: 0.75; }
.tb-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #1a1a1a;
  padding: 10px 18px;
  border-radius: 8px;
  z-index: 1000;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}