:root {
  --bg: #1a0f0a;
  --bg-card: #2a1810;
  --bg-chat: #1f120c;
  --lava: #e85d2a;
  --lava-bright: #ff7b3d;
  --ember: #ffb347;
  --ash: #c4b5a8;
  --text: #f5ebe0;
  --text-muted: #a89888;
  --vent: #4ecdc4;
  --radius: 16px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  font-family: 'Nunito', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 50% 0%, rgba(232, 93, 42, 0.25) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 90%, rgba(255, 123, 61, 0.12) 0%, transparent 40%);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.5;
}

body.modal-open {
  overflow: hidden;
}

.app-shell {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.main-column {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 16px;
  gap: 12px;
}

/* Conversation sidebar */
.conv-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid rgba(232, 93, 42, 0.25);
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
  gap: 10px;
  min-height: 100vh;
  min-height: 100dvh;
  height: 100dvh;
  overflow-y: auto;
}

.sidebar-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.new-conv-btn {
  flex: 1;
  background: linear-gradient(135deg, var(--lava-bright), var(--lava));
  border: none;
  border-radius: 12px;
  padding: 11px 14px;
  color: #fff;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}

.new-conv-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.sidebar-close {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}

.sync-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
  padding: 0 4px;
}

.conv-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.conv-list li {
  position: relative;
  display: flex;
  align-items: stretch;
  min-width: 0;
}

.conv-item {
  flex: 1;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 46px 10px 12px;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}

.conv-item:hover {
  background: rgba(232, 93, 42, 0.12);
}

.conv-item.active {
  background: rgba(78, 205, 196, 0.12);
  border-color: rgba(78, 205, 196, 0.35);
}

.conv-item-title {
  width: 100%;
  min-width: 0;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conv-item-date {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.conv-delete {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  background: rgba(31, 18, 12, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 9px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.conv-delete-label {
  display: none;
}

.conv-delete:hover,
.conv-delete:focus-visible {
  color: var(--lava-bright);
  background: rgba(232, 93, 42, 0.15);
  border-color: rgba(232, 93, 42, 0.35);
}

.conv-delete:focus-visible {
  outline: 2px solid rgba(232, 93, 42, 0.45);
  outline-offset: 2px;
}

.sidebar-backdrop {
  display: none;
}

.sidebar-toggle {
  flex-shrink: 0;
}

.header-new-btn {
  display: none;
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1;
  padding: 8px 14px;
  background: linear-gradient(135deg, var(--lava-bright), var(--lava));
  border-color: transparent;
  color: #fff;
}

.settings-sync input[type="text"],
.sync-bundle-text {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

.sync-bundle-text {
  margin-top: 8px;
  resize: vertical;
  font-size: 0.72rem;
  word-break: break-all;
}

.sync-bundle-actions {
  margin-top: 8px;
}

/* Header */
.header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(232, 93, 42, 0.3);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--lava-bright), var(--lava));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 0 20px rgba(232, 93, 42, 0.5);
}

.brand h1 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.age-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.age-badge.guest {
  background: rgba(168, 152, 136, 0.2);
  color: var(--ash);
}

.age-badge.partial {
  background: rgba(255, 179, 71, 0.2);
  color: var(--ember);
}

.age-badge.verified {
  background: rgba(78, 205, 196, 0.2);
  color: var(--vent);
}

.icon-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s, border-color 0.15s;
}

.icon-btn:hover {
  background: rgba(232, 93, 42, 0.2);
  border-color: rgba(232, 93, 42, 0.4);
}

.icon-btn.on {
  background: rgba(78, 205, 196, 0.15);
  border-color: rgba(78, 205, 196, 0.4);
  color: var(--vent);
}

/* Rules sidebar card */
.rules-card {
  flex-shrink: 0;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(78, 205, 196, 0.2);
  font-size: 0.85rem;
}

.rules-card-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.rules-card-summary::-webkit-details-marker {
  display: none;
}

.rules-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--vent);
}

.rules-card-toggle {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(78, 205, 196, 0.12);
  border: 1px solid rgba(78, 205, 196, 0.25);
}

.rules-card-body {
  padding: 0 16px 14px;
}

.rules-card[open] .rules-card-toggle {
  color: var(--vent);
}

.rules-card ul {
  list-style: none;
  color: var(--text-muted);
}

.rules-card li {
  padding: 3px 0;
  padding-left: 14px;
  position: relative;
}

.rules-card li::before {
  content: '🎲';
  position: absolute;
  left: 0;
  font-size: 0.65rem;
}

.house-rules {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.house-rules strong {
  color: var(--ember);
}

/* Chat */
.chat-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-chat);
  border-radius: var(--radius);
  border: 1px solid rgba(232, 93, 42, 0.2);
  overflow: hidden;
}

.chat-viewport {
  flex: 1;
  min-height: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-fade-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.25s ease;
  background: linear-gradient(to bottom, var(--bg-chat) 15%, rgba(31, 18, 12, 0.92) 55%, transparent 100%);
}

.chat-viewport.has-history.at-bottom:not(.scrolled-up) .chat-fade-top {
  opacity: 1;
}

.chat-viewport.has-history.at-bottom:not(.scrolled-up) .chat-messages {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, rgba(0, 0, 0, 0.35) 40px, #000 88px, #000 100%);
  mask-image: linear-gradient(to bottom, transparent 0, rgba(0, 0, 0, 0.35) 40px, #000 88px, #000 100%);
}

.chat-scroll-hint {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(31, 18, 12, 0.9);
  border: 1px solid rgba(232, 93, 42, 0.2);
  padding: 5px 12px;
  border-radius: 14px;
  pointer-events: none;
  white-space: nowrap;
}

.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: scroll;
  overflow-x: hidden;
  padding: 16px;
  padding-right: 22px;
  padding-bottom: max(16px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: rgba(232, 93, 42, 0.65) rgba(255, 255, 255, 0.08);
}

.chat-messages::-webkit-scrollbar {
  width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: rgba(232, 93, 42, 0.65);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.chat-top-spacer {
  flex: 1 0 auto;
  min-height: 0;
  pointer-events: none;
}

.chat-scroll-anchor {
  flex-shrink: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

.chat-scrollbar {
  position: absolute;
  right: 6px;
  top: 10px;
  bottom: 10px;
  width: 5px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 4;
}

.chat-viewport.has-history .chat-scrollbar {
  opacity: 1;
}

.chat-scrollbar-thumb {
  width: 100%;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--lava-bright), var(--lava));
  min-height: 32px;
  box-shadow: 0 0 6px rgba(232, 93, 42, 0.45);
}

.message {
  max-width: 92%;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.message.user {
  align-self: flex-end;
}

.message.assistant {
  align-self: flex-start;
}

.message-body {
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.55;
}

.message.user .message-body {
  background: linear-gradient(135deg, var(--lava), #c44a1f);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.message.assistant .message-body {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom-left-radius: 4px;
}

.message-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  padding-left: 4px;
}

.typing {
  flex-shrink: 0;
  padding: 8px 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
}

.typing.hidden {
  display: none;
}

/* Quick chips */
.quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 16px 10px;
}

.quick-chip {
  background: rgba(78, 205, 196, 0.12);
  border: 1px solid rgba(78, 205, 196, 0.3);
  color: var(--vent);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background 0.15s;
}

.quick-chip:hover {
  background: rgba(78, 205, 196, 0.25);
}

/* Input */
.chat-input-row {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.2);
}

#chat-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  resize: none;
}

#chat-input:focus {
  outline: none;
  border-color: var(--lava);
}

#send-btn {
  background: linear-gradient(135deg, var(--lava-bright), var(--lava));
  border: none;
  border-radius: 12px;
  padding: 12px 20px;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.1s, box-shadow 0.15s;
}

#send-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(232, 93, 42, 0.4);
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(232, 93, 42, 0.3);
  max-width: 420px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.modal-header h2 {
  font-size: 1.1rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

.age-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.birthday-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.birthday-date {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text);
  font-family: inherit;
  margin-bottom: 10px;
}

.birthday-or {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin: 8px 0;
}

.birthday-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 8px;
}

.birthday-row select {
  padding: 10px 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

.birthday-preview {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--vent);
}

.age-error,
.settings-error {
  color: #ff6b6b;
  font-size: 0.82rem;
  margin-top: 10px;
}

.hidden {
  display: none !important;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.btn-primary {
  flex: 1;
  background: linear-gradient(135deg, var(--lava-bright), var(--lava));
  border: none;
  border-radius: 10px;
  padding: 12px;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
}

.settings-section {
  margin-bottom: 20px;
}

.settings-section h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--ember);
}

.settings-section p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.settings-llm label,
.settings-voice label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  font-size: 0.88rem;
  margin-bottom: 10px;
  cursor: pointer;
}

.settings-llm label:has(input[type="checkbox"]) {
  flex-direction: row;
  align-items: center;
}

.settings-llm select,
.settings-llm input[type="password"],
.settings-llm input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

.settings-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 4px 0 10px;
}

.settings-setup-mini-wrap {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.settings-setup-mini-wrap.hidden {
  display: none;
}

.settings-setup-mini-title {
  margin: 0 0 6px;
  font-size: 0.8rem;
  color: var(--text);
}

.settings-setup-mini {
  margin: 0 0 0 1.1rem;
  padding: 0;
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.settings-setup-mini li {
  margin-bottom: 4px;
}

.settings-setup-mini a {
  color: var(--accent, #e8a87c);
}

.settings-steps {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0 0 12px 1.1rem;
  padding: 0;
  line-height: 1.45;
}

.settings-steps li {
  margin-bottom: 6px;
}

.settings-steps a {
  color: var(--accent, #e8a87c);
}

/* Share conversation */
.share-modal {
  max-width: 480px;
}

.share-warning {
  font-size: 0.85rem;
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(232, 93, 42, 0.1);
  border: 1px solid rgba(232, 93, 42, 0.25);
}

.share-url-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.share-url-input {
  width: 100%;
  font-family: ui-monospace, monospace;
  font-size: 0.75rem;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
}

.share-status {
  font-size: 0.78rem;
  color: var(--teal, #4ecdc4);
  margin: 6px 0 10px;
}

.share-status.share-status-error {
  color: var(--lava-bright, #ff6b35);
}

.share-social-label {
  margin-top: 14px;
  margin-bottom: 8px;
}

.share-social {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.share-social-btn {
  font-family: inherit;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.share-social-btn:hover,
.share-social-btn:focus-visible {
  background: rgba(78, 205, 196, 0.12);
  border-color: rgba(78, 205, 196, 0.35);
}

.share-page .share-shell {
  min-height: 100vh;
}

.share-header .share-start-btn {
  text-decoration: none;
  font-size: 0.78rem;
  padding: 8px 12px;
  white-space: nowrap;
}

.share-banner {
  margin: 0 16px 8px;
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
  text-align: center;
}

.share-chat-wrap {
  padding-bottom: 12px;
}

.share-viewport {
  max-height: calc(100vh - 220px);
  min-height: 280px;
}

.share-loading,
.share-error {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 16px;
}

.share-error {
  color: var(--lava-bright, #ff6b35);
}

.share-footer {
  text-align: center;
  padding-bottom: 20px;
}

.share-footer a {
  color: var(--accent, #e8a87c);
}

.settings-voice input[type="range"] {
  width: 100%;
  margin-top: 4px;
}

.settings-footer {
  position: sticky;
  bottom: 0;
  padding: 14px 20px 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--bg-card);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.25);
}

.settings-save-all-btn {
  width: 100%;
  font-size: 0.95rem;
  padding: 14px;
}

.settings-save-all-status {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 10px;
}

.footer-note {
  flex-shrink: 0;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 8px;
}

@media (max-width: 860px) {
  body {
    overflow: hidden;
  }

  .app-shell {
    height: 100dvh;
    min-height: 100dvh;
    max-width: none;
  }

  .main-column {
    height: 100%;
    min-height: 0;
    padding: 8px 10px 10px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
    gap: 8px;
    overflow: hidden;
  }

  .conv-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(88vw, 320px);
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: var(--shadow);
    min-height: 100dvh;
    padding-top: max(12px, env(safe-area-inset-top));
  }

  body.sidebar-open .conv-sidebar {
    transform: translateX(0);
  }

  body.sidebar-open .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 199;
  }

  .sidebar-close {
    display: block;
  }

  .sidebar-toggle,
  .header-new-btn {
    display: inline-flex;
  }

  .header {
    flex-shrink: 0;
    padding: 10px 12px;
  }

  .brand h1 {
    font-size: 1.15rem;
  }

  .brand-icon {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }

  .tagline {
    display: none;
  }

  .rules-card {
    flex-shrink: 0;
  }

  .rules-card:not([open]) .rules-card-body {
    display: none;
  }

  .chat-wrap {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
  }

  .chat-viewport {
    flex: 1;
    min-height: 0;
    overflow: hidden;
  }

  .chat-messages {
    flex: 1;
    min-height: 0;
    overflow-y: scroll;
    padding-right: 20px;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    scrollbar-width: thin;
    scrollbar-color: rgba(232, 93, 42, 0.75) rgba(255, 255, 255, 0.12);
  }

  .chat-messages::-webkit-scrollbar {
    width: 10px;
  }

  .chat-scrollbar {
    right: 4px;
    width: 8px;
    opacity: 1;
  }

  .chat-viewport.has-history .chat-scrollbar {
    opacity: 1;
  }

  .quick-chips {
    flex-shrink: 0;
    padding: 0 12px 8px;
    gap: 6px;
  }

  .quick-chip {
    font-size: 0.72rem;
    padding: 5px 10px;
  }

  .chat-input-row {
    flex-shrink: 0;
    padding: 10px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
  }

  .footer-note {
    display: none;
  }
}

@media (min-width: 861px) {
  .sidebar-toggle {
    display: none;
  }
}

@media (max-width: 520px) {
  .header {
    flex-wrap: nowrap;
    gap: 8px;
  }

  .brand {
    flex: 1;
    min-width: 0;
  }

  .header-controls {
    width: auto;
    flex-shrink: 0;
    justify-content: flex-end;
    gap: 6px;
  }

  .voice-label {
    display: none;
  }

  .age-badge {
    font-size: 0.62rem;
    padding: 3px 8px;
  }

  .icon-btn {
    padding: 8px 10px;
  }
}

@media (min-width: 861px) {
  .rules-card {
    padding: 14px 16px;
  }

  .rules-card-summary {
    display: none;
  }

  .rules-card-body {
    padding: 0;
  }

  .rules-card-title-desktop {
    display: block;
    font-size: 0.9rem;
    color: var(--vent);
    margin-bottom: 8px;
    font-weight: 700;
  }
}

@media (max-width: 860px) {
  .rules-card-title-desktop {
    display: none;
  }
}