:root {
  --bg: #ece5d7;
  --surface: rgba(255, 251, 244, 0.92);
  --surface-strong: #fffdfa;
  --line: rgba(55, 40, 24, 0.1);
  --text: #20160e;
  --muted: #6f5946;
  --accent: #0f766e;
  --accent-strong: #0a5b54;
  --danger: #a11b1b;
  --shadow: 0 24px 64px rgba(59, 41, 22, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 34%),
    radial-gradient(circle at bottom right, rgba(180, 83, 9, 0.13), transparent 28%),
    linear-gradient(180deg, #f6f2ea 0%, #ece4d8 100%);
}

.hidden {
  display: none !important;
}

.app-shell {
  width: min(1180px, calc(100vw - 24px));
  margin: 24px auto;
}

.auth-screen {
  min-height: calc(100vh - 48px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: center;
}

.brand-card,
.auth-card,
.sidebar,
.chat-main {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.brand-card {
  display: block;
  padding: 28px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-size: 0.72rem;
}

h1,
h2 {
  margin: 0 0 10px;
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
}

.auth-card {
  padding: 24px;
  display: grid;
  gap: 14px;
}

.tabs {
  display: flex;
  gap: 10px;
}

.tab,
button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  cursor: pointer;
}

.tab {
  background: #f2eadf;
  color: var(--text);
}

.tab.active,
button.primary {
  background: var(--accent);
  color: #fff;
}

button.ghost {
  background: #fff6eb;
  color: var(--text);
  border: 1px solid var(--line);
}

label {
  display: grid;
  gap: 8px;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(32, 22, 14, 0.12);
  background: var(--surface-strong);
  color: var(--text);
  border-radius: 16px;
  padding: 14px 16px;
  font: inherit;
}

.error-text {
  color: var(--danger);
  margin: 0;
}

.chat-screen {
  min-height: calc(100vh - 48px);
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 18px;
}

.sidebar,
.chat-main {
  padding: 20px;
}

.sidebar {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 16px;
}

.sidebar-head,
.chat-head,
.message-meta,
.composer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mini-brand {
  display: flex;
  align-items: center;
  gap: 0;
}

.mini-brand p,
#peerSummary {
  margin: 4px 0 0;
  color: var(--muted);
}

.room-create {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.room-list {
  display: grid;
  gap: 10px;
  align-content: start;
}

.room-item {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  cursor: pointer;
  text-align: left;
  display: grid;
  gap: 8px;
}

.room-item.active {
  background: rgba(15, 118, 110, 0.12);
  border-color: rgba(15, 118, 110, 0.22);
}

.room-item-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.room-item-top strong {
  flex: 1;
}

.room-delete {
  padding: 6px 8px;
  border-radius: 10px;
  background: rgba(255, 236, 236, 0.95);
  color: var(--danger);
  font-size: 0.82rem;
}

.room-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.room-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(55, 40, 24, 0.18);
  flex: none;
}

.room-dot.live {
  background: var(--accent);
}

.room-dot.warm {
  background: #c87b1f;
}

.room-dot.idle {
  background: rgba(55, 40, 24, 0.18);
}

.status-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
}

.chat-main {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
}

.messages {
  min-height: 320px;
  max-height: calc(100vh - 230px);
  overflow-y: auto;
  display: grid;
  gap: 12px;
  align-content: start;
  justify-items: start;
}

.message {
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  max-width: min(620px, 88%);
  width: fit-content;
}

.message.self {
  background: rgba(15, 118, 110, 0.1);
  justify-self: end;
}

.message.system {
  background: rgba(255, 236, 236, 0.9);
}

.message-meta {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.body {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.95rem;
  line-height: 1.35;
  max-width: min(52ch, 70vw);
}

.composer {
  align-items: flex-end;
}

.composer textarea {
  min-height: 70px;
  resize: vertical;
}

@media (max-width: 900px) {
  .auth-screen,
  .chat-screen {
    grid-template-columns: 1fr;
  }

  .app-shell {
    width: min(100vw - 12px, 1180px);
    margin: 12px auto;
  }

  .brand-card {
    grid-template-columns: 1fr;
  }

  .composer {
    flex-direction: column;
    align-items: stretch;
  }
}