:root {
  --bg: #fef7ed;
  --surface: rgba(255, 252, 247, 0.96);
  --surface-strong: #fff;
  --line: rgba(124, 45, 18, 0.12);
  --line-strong: rgba(124, 45, 18, 0.18);
  --ink: #27160d;
  --muted: #7c5b48;
  --accent: #c2410c;
  --accent-deep: #9a3412;
  --accent-soft: rgba(251, 146, 60, 0.14);
  --mint: #0f766e;
  --mint-soft: rgba(15, 118, 110, 0.12);
  --rose: #be123c;
  --shadow: 0 16px 40px rgba(113, 63, 18, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top left, rgba(251, 146, 60, 0.18), transparent 28%),
    radial-gradient(circle at 90% 12%, rgba(15, 118, 110, 0.14), transparent 24%),
    linear-gradient(180deg, #fff8ef 0%, var(--bg) 55%, #fffdf9 100%);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(1160px, calc(100% - 20px));
  margin: 0 auto;
  padding: 18px 0 40px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(180deg, var(--surface) 0%, rgba(255, 255, 255, 0.98) 100%);
  box-shadow: var(--shadow);
}

.hero {
  padding: 22px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
  gap: 18px;
  align-items: start;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

h2 {
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.lede,
.hero-note p,
.share-copy,
.side-copy,
.room-meta,
.status-bar,
.room-item p,
.share-origin,
.share-room-name {
  color: var(--muted);
  line-height: 1.7;
}

.hero-note {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.88);
}

.note-title {
  margin-bottom: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mint);
}

.setup-grid,
.chat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.panel,
.share-card,
.room-banner,
.messages-panel,
.side-panel {
  padding: 18px;
}

.panel-head,
.feed-head,
.room-banner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.stack {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.field,
.composer-field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
}

textarea {
  resize: vertical;
  min-height: 76px;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible {
  outline: 2px solid rgba(194, 65, 12, 0.18);
  outline-offset: 2px;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  border-radius: 999px;
  padding: 11px 16px;
  border: 1px solid transparent;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.primary-btn:hover,
.secondary-btn:hover,
.ghost-btn:hover,
.primary-btn:focus-visible,
.secondary-btn:focus-visible,
.ghost-btn:focus-visible {
  transform: translateY(-1px);
}

.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
}

.secondary-btn {
  color: var(--mint);
  border-color: rgba(15, 118, 110, 0.18);
  background: var(--mint-soft);
}

.ghost-btn {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.danger-btn {
  color: var(--rose);
  border-color: rgba(190, 18, 60, 0.18);
}

.status-chip,
.room-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-chip.host,
.room-pill.pin {
  color: var(--accent-deep);
  background: var(--accent-soft);
}

.status-chip.join,
.room-pill.open {
  color: var(--mint);
  background: var(--mint-soft);
}

.share-card {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 18px;
  margin-top: 16px;
}

.url-list,
.room-list,
.participant-list,
.message-list {
  display: grid;
  gap: 10px;
}

.url-item,
.room-item,
.participant-item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
}

.url-item strong,
.room-item strong,
.participant-item strong {
  display: block;
  margin-bottom: 4px;
}

.url-item code {
  display: inline-block;
  margin-top: 6px;
  color: var(--accent-deep);
  word-break: break-all;
}

.room-feed {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.feed-head {
  align-items: center;
}

.room-item {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
}

.room-item button {
  flex: 0 0 auto;
}

.chat-shell {
  margin-top: 16px;
}

.room-banner {
  margin-bottom: 16px;
}

.messages-panel {
  display: grid;
  gap: 14px;
}

.message-list {
  min-height: 420px;
  max-height: 60vh;
  overflow: auto;
  padding-right: 4px;
}

.message {
  max-width: min(90%, 40rem);
  padding: 12px 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
}

.message.mine {
  margin-left: auto;
  border-color: rgba(194, 65, 12, 0.2);
  background: rgba(255, 237, 213, 0.96);
}

.message.system {
  max-width: 100%;
  border-style: dashed;
  background: rgba(255, 249, 235, 0.9);
}

.message-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 6px;
}

.message-user {
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.message-time {
  color: var(--muted);
  font-size: 0.78rem;
}

.message-text {
  line-height: 1.65;
  word-break: break-word;
  white-space: pre-wrap;
}

.composer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.send-btn {
  min-width: 112px;
}

.side-panel {
  display: grid;
  gap: 14px;
  align-content: start;
}

.side-block {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
}

.share-room-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.share-origin {
  margin-top: 8px;
  word-break: break-all;
}

.status-bar {
  min-height: 24px;
  margin-top: 14px;
  padding: 0 8px;
  font-size: 0.96rem;
}

.is-hidden {
  display: none !important;
}

.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;
}

@media (max-width: 960px) {
  .hero-grid,
  .setup-grid,
  .chat-grid,
  .share-card,
  .composer {
    grid-template-columns: 1fr;
  }

  .message-list {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 14px, 1160px);
    padding: 12px 0 28px;
  }

  .hero,
  .panel,
  .share-card,
  .room-banner,
  .messages-panel,
  .side-panel {
    padding: 16px;
    border-radius: 22px;
  }

  h1 {
    font-size: clamp(2.2rem, 10vw, 3.4rem);
  }

  .room-item,
  .panel-head,
  .room-banner {
    flex-direction: column;
  }

  .room-item button,
  .danger-btn {
    width: 100%;
  }
}