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

:root {
  --bg: #0A0A0A;
  --surface: #151922;
  --surface2: #1A1F2E;
  --surface3: #0D1117;
  --border: #1F2937;
  --border-light: #2a3444;
  --text: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-dim: #6B7280;
  --gold: #C9A227;
  --gold-light: #E5C158;
  --gold-dim: rgba(201, 162, 39, 0.15);
  --gold-glow: rgba(201, 162, 39, 0.08);
  --error: #fc8181;
  --success: #68D391;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Grain */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── Focus styles (WCAG) ── */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
  outline: none;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
  padding-top: max(14px, env(safe-area-inset-top));
  position: relative;
}

.header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}

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

.header-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.header-title .qq { color: var(--gold); font-weight: 700; }
.header-actions { display: flex; gap: 8px; align-items: center; }

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.2s;
}

.icon-btn:hover {
  background: var(--surface);
  color: var(--gold);
  border-color: var(--gold-dim);
}

/* ── Model selector ── */
.model-select-wrap { position: relative; }

.model-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}

.model-btn:hover { border-color: var(--gold-dim); color: var(--gold); }
.model-btn .arrow { font-size: 8px; opacity: .6; }

.model-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  min-width: 220px;
  z-index: 100;
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
}

.model-dropdown.open { display: block; }

.model-dropdown-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  padding: 10px 14px 4px;
}

.model-option {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .15s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.model-option:hover { background: var(--surface2); color: var(--text); }
.model-option.active { color: var(--gold); }
.model-option.active::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

.model-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Model indicator ── */
.model-indicator {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: .04em;
  padding: 4px 20px;
  background: rgba(31,41,55,.3);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.model-indicator .dot {
  width: 5px;
  height: 5px;
  background: var(--text-dim);
  border-radius: 50%;
}

.model-indicator .dot.live {
  background: var(--gold);
  animation: pulse 2s ease infinite;
}

@keyframes pulse { 0%,100% { opacity: .5; } 50% { opacity: 1; } }

/* ── Lock screen ── */
.lock-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lock-screen.hidden { display: none; }

.lock-inner { text-align: center; max-width: 320px; padding: 20px; }

.lock-logo {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
}

.lock-title {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text);
  margin-bottom: 4px;
}

.lock-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 24px;
  letter-spacing: .03em;
}

.lock-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
  margin-bottom: 12px;
  text-align: center;
  letter-spacing: 2px;
}

.lock-input:focus { border-color: var(--gold-dim); }

.lock-btn {
  width: 100%;
  padding: 10px;
  background: var(--gold-dim);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all .2s;
}

.lock-btn:hover { background: rgba(201,162,39,.25); }
.lock-btn:disabled { opacity: 0.5; cursor: wait; }

.lock-error {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--error);
  margin-top: 12px;
  min-height: 16px;
}

/* ── Messages ── */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.messages::-webkit-scrollbar { width: 3px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.message {
  margin-bottom: 28px;
  animation: msgIn 0.3s ease;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.message-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 8px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}

.message-label.user-label { color: var(--gold); }

.message-time {
  font-size: 9px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.message-content {
  font-size: 15.5px;
  line-height: 1.7;
  word-break: break-word;
  color: var(--text-secondary);
}

.message-content.user {
  color: var(--text);
  padding: 16px 20px;
  background: var(--surface2);
  border-left: 2px solid var(--gold-dim);
}

.message-content.assistant { padding: 4px 0; }

.message-content p { margin-bottom: 14px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content strong { color: var(--gold-light); font-weight: 600; }
.message-content em { font-style: italic; color: var(--text); }

.message-content code {
  background: var(--surface3);
  padding: 2px 7px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--gold-light);
  border: 1px solid var(--border);
}

.message-content pre {
  background: var(--surface3);
  padding: 16px;
  overflow-x: auto;
  margin: 12px 0;
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid var(--border);
  position: relative;
}

.message-content pre code {
  background: none;
  padding: 0;
  border: none;
  color: var(--text-secondary);
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 8px;
  cursor: pointer;
  transition: all 0.2s;
  z-index: 2;
}

.copy-btn:hover { color: var(--gold); border-color: var(--gold-dim); }
.copy-btn.copied { color: var(--success); border-color: var(--success); }

.message-content ul, .message-content ol { padding-left: 24px; margin: 10px 0; }
.message-content li { margin-bottom: 6px; line-height: 1.6; }
.message-content li::marker { color: var(--gold); }

.message-content blockquote {
  border-left: 3px solid var(--gold);
  padding: 12px 16px;
  margin: 12px 0;
  color: var(--text-dim);
  font-style: italic;
  font-family: var(--font-display);
  font-size: 17px;
  background: var(--gold-glow);
}

.message-content h1, .message-content h2, .message-content h3 {
  font-family: var(--font-display);
  color: var(--text);
  margin: 20px 0 10px;
  font-weight: 600;
}

.message-content h1 { font-size: 22px; }
.message-content h2 { font-size: 19px; }
.message-content h3 { font-size: 17px; color: var(--gold-light); }
.message-content a { color: var(--gold); text-decoration: underline; text-underline-offset: 2px; }

.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}

.message-content th, .message-content td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.message-content th {
  background: var(--surface);
  color: var(--gold-light);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.msg-separator {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 0 28px;
}

/* Streaming */
.streaming-cursor::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 16px;
  background: var(--gold);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.typing { display: inline-flex; gap: 5px; padding: 8px 0; }

.typing span {
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: bounce 1.4s ease-in-out infinite;
}

.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 80%, 100% { opacity: 0.3; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-4px); }
}

/* ── Input area ── */
.input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
  padding-bottom: max(16px, env(safe-area-inset-bottom));
  position: relative;
}

.input-area::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}

.input-row { display: flex; gap: 12px; align-items: flex-end; }

.input-wrapper {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}

.input-wrapper:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold-dim);
}

textarea {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 15px;
  font-family: var(--font-body);
  padding: 14px 16px;
  resize: none;
  outline: none;
  max-height: 120px;
  line-height: 1.5;
}

textarea::placeholder { color: var(--text-dim); font-style: italic; }

.send-btn {
  background: linear-gradient(135deg, var(--gold), #A8851E);
  border: none;
  color: var(--bg);
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.2s;
}

.send-btn:hover { box-shadow: 0 0 16px var(--gold-dim); }
.send-btn:disabled { background: var(--border); cursor: not-allowed; }

.send-btn.stop {
  background: linear-gradient(135deg, var(--error), #c53030);
}

.send-btn.stop:hover { box-shadow: 0 0 16px rgba(252,129,129,0.3); }

.attach-btn { font-size: 18px; width: 46px; height: 46px; }
.attach-btn:hover { color: var(--gold); border-color: var(--gold-dim); }

.attach-preview { display: flex; flex-wrap: wrap; gap: 6px; padding-bottom: 8px; }
.attach-preview:empty { display: none; }

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.file-chip .remove { cursor: pointer; color: var(--text-dim); font-size: 14px; line-height: 1; }
.file-chip .remove:hover { color: var(--error); }
.file-chip .ftype { color: var(--gold); font-weight: 500; text-transform: uppercase; }

/* ── Welcome ── */
.welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  text-align: center;
}

.welcome-orb {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--gold-light), var(--gold), #8B6914);
  margin-bottom: 24px;
  position: relative;
  box-shadow: 0 0 40px var(--gold-dim), 0 0 80px rgba(201,162,39,0.05);
  animation: orbPulse 4s ease-in-out infinite;
}

.welcome-orb::after {
  content: 'QQ';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--bg);
}

@keyframes orbPulse {
  0%, 100% { box-shadow: 0 0 40px var(--gold-dim), 0 0 80px rgba(201,162,39,0.05); }
  50% { box-shadow: 0 0 50px rgba(201,162,39,0.25), 0 0 100px rgba(201,162,39,0.1); }
}

.welcome-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.welcome-sub {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 380px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.starters { display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 420px; }

.starter {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 14px 18px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.5;
}

.starter:hover {
  background: var(--surface2);
  border-color: var(--gold);
  color: var(--text);
  box-shadow: 0 0 12px var(--gold-glow);
}

.starter::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
  margin-right: 10px;
  vertical-align: middle;
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  left: -300px;
  width: 300px;
  height: 100dvh;
  background: var(--bg);
  border-right: 1px solid var(--border);
  z-index: 100;
  transition: left 0.3s ease;
  display: flex;
  flex-direction: column;
  padding-top: max(12px, env(safe-area-inset-top));
}

.sidebar.open { left: 0; }

.sidebar-header {
  padding: 18px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--gold);
}

.sidebar-list { flex: 1; overflow-y: auto; padding: 8px; }

.sidebar-empty {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: center;
  padding: 24px 0;
}

.sidebar-item {
  padding: 12px 14px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.15s;
  border-left: 2px solid transparent;
}

.sidebar-item:hover { background: var(--surface); color: var(--text); border-left-color: var(--gold-dim); }
.sidebar-item.active { background: var(--surface2); color: var(--text); border-left-color: var(--gold); }

.sidebar-item .item-info { flex: 1; min-width: 0; }
.sidebar-item .item-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-item .item-date { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); margin-top: 2px; }

.sidebar-item .delete-btn {
  opacity: 0;
  color: var(--error);
  cursor: pointer;
  font-size: 13px;
  padding: 4px;
  background: none;
  border: none;
  flex-shrink: 0;
}

.sidebar-item:hover .delete-btn { opacity: 0.6; }
.sidebar-item .delete-btn:hover { opacity: 1; }

.new-chat-btn {
  margin: 8px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
}

.new-chat-btn:hover { background: var(--gold-glow); border-color: var(--gold); }

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 99;
  backdrop-filter: blur(2px);
}

.overlay.show { display: block; }

/* ── Files drawer ── */
.files-drawer { border-bottom: 1px solid var(--border); background: var(--surface3); flex-shrink: 0; }
.files-header { display: flex; align-items: center; gap: 8px; padding: 8px 20px; cursor: pointer; user-select: none; }
.files-title { font-family: var(--font-mono); font-size: 12px; color: var(--gold); text-transform: uppercase; letter-spacing: 1px; }
.files-count { background: var(--gold-dim); color: var(--gold); font-family: var(--font-mono); font-size: 11px; padding: 1px 6px; border-radius: 8px; }
.files-arrow { color: var(--text-dim); font-size: 10px; margin-left: auto; transition: transform 0.2s; }
.files-arrow.open { transform: rotate(180deg); }
.files-body { padding: 0 20px 12px; max-height: 250px; overflow-y: auto; }
.files-upload-btn { background: transparent; border: 1px dashed var(--border); color: var(--text-dim); font-family: var(--font-mono); font-size: 12px; padding: 8px 16px; cursor: pointer; width: 100%; margin-bottom: 8px; transition: all 0.2s; }
.files-upload-btn:hover { border-color: var(--gold); color: var(--gold); background: var(--gold-glow); }
.files-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.file-row { display: flex; align-items: center; gap: 8px; padding: 6px 10px; background: var(--surface); border: 1px solid var(--border); font-family: var(--font-mono); font-size: 12px; }
.file-row .file-name { flex: 1; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .file-size { color: var(--text-dim); font-size: 11px; flex-shrink: 0; }
.file-row .file-toggle { width: 32px; height: 18px; background: var(--border); border: none; border-radius: 9px; cursor: pointer; position: relative; transition: background 0.2s; flex-shrink: 0; }
.file-row .file-toggle.on { background: var(--gold); }
.file-row .file-toggle::after { content: ''; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; background: white; border-radius: 50%; transition: left 0.2s; }
.file-row .file-toggle.on::after { left: 16px; }
.file-row .file-delete { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 14px; padding: 0 4px; flex-shrink: 0; }
.file-row .file-delete:hover { color: var(--error); }
.files-empty { color: var(--text-dim); font-size: 12px; font-family: var(--font-mono); padding: 8px 0; }
.files-text-upload { margin-top: 6px; margin-bottom: 8px; }
.files-text-area { width: 100%; background: var(--surface); border: 1px solid var(--border); color: var(--text); font-family: var(--font-mono); font-size: 12px; padding: 8px; resize: vertical; min-height: 60px; max-height: 150px; outline: none; }
.files-text-area::placeholder { color: var(--text-dim); }
.files-text-area:focus { border-color: var(--gold-dim); }
.files-text-row { display: flex; gap: 6px; margin-top: 4px; }
.files-text-name { flex: 1; background: var(--surface); border: 1px solid var(--border); color: var(--text); font-family: var(--font-mono); font-size: 12px; padding: 4px 8px; outline: none; }
.files-text-name::placeholder { color: var(--text-dim); }
.files-text-name:focus { border-color: var(--gold-dim); }
.files-text-submit { background: var(--gold-dim); border: 1px solid var(--gold); color: var(--gold); font-family: var(--font-mono); font-size: 12px; padding: 4px 12px; cursor: pointer; white-space: nowrap; }
.files-text-submit:hover { background: var(--gold); color: var(--bg); }

/* ── Drop overlay ── */
.drop-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.85);
  z-index: 150;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  pointer-events: none;
}

.drop-overlay.active { display: flex; }
.drop-overlay-inner { border: 2px dashed var(--gold); padding: 48px 64px; text-align: center; background: var(--gold-glow); }
.drop-overlay-inner .drop-icon { font-size: 48px; margin-bottom: 12px; }
.drop-overlay-inner .drop-text { font-family: var(--font-display); font-size: 22px; color: var(--gold); font-weight: 600; }
.drop-overlay-inner .drop-sub { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); margin-top: 8px; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--error);
  color: var(--error);
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  z-index: 200;
  animation: msgIn 0.2s ease;
  max-width: 90%;
}

.toast.success { border-color: var(--success); color: var(--success); }

/* ── Mobile ── */
@media (max-width: 480px) {
  .welcome-title { font-size: 26px; }
  .welcome-orb { width: 64px; height: 64px; }
  .welcome-orb::after { font-size: 22px; }
  .messages { padding: 20px 16px; }
  .header { padding: 12px 16px; }
  .input-area { padding: 12px 16px; }
  .starters { max-width: 100%; }
  .header-title { font-size: 17px; }
}