:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --panel: #fffdf8;
  --ink: #1f2328;
  --muted: #65717d;
  --line: #d8d0c2;
  --accent: #0f766e;
  --accent-dark: #0b5f59;
  --user: #e7f5f3;
  --assistant: #f8efe2;
  --error: #b42318;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
textarea {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  padding: 24px;
}

.auth-panel {
  width: min(440px, 100%);
  margin: 12vh auto 0;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgb(31 35 40 / 12%);
}

.auth-copy {
  margin-bottom: 24px;
}

.auth-form,
.auth-form label {
  display: grid;
  gap: 8px;
}

.auth-form {
  gap: 16px;
}

.auth-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.google-login {
  display: grid;
  place-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.google-login:hover {
  border-color: var(--accent);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  background: #ffffff;
}

input:focus,
textarea:focus {
  outline: 3px solid rgb(15 118 110 / 22%);
  border-color: var(--accent);
}

.chat-layout {
  width: min(1180px, 100%);
  height: min(860px, calc(100vh - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 300px 1fr;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgb(31 35 40 / 12%);
  overflow: hidden;
}

.sidebar {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 14px;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: #fbf8f0;
  min-width: 0;
}

.sidebar-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

#user-email {
  display: block;
  max-width: 180px;
  overflow-wrap: anywhere;
}

.consent-panel {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.consent-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.sidebar-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.conversation-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  min-height: 0;
}

.conversation-item {
  width: 100%;
  min-height: 40px;
  padding: 9px 10px;
  color: var(--ink);
  background: transparent;
  border: 1px solid transparent;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation-item:hover,
.conversation-item.active {
  color: var(--ink);
  background: #ffffff;
  border-color: var(--line);
}

.chat-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  line-height: 1.15;
}

.model-pill {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  font-size: 0.86rem;
  background: #ffffff;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
  overflow-y: auto;
}

.message {
  max-width: min(720px, 92%);
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.message p {
  margin: 0;
}

.message.user {
  align-self: flex-end;
  background: var(--user);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant);
}

.message.loading {
  color: var(--muted);
}

.message-label {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.error {
  margin: 0 22px 14px;
  color: var(--error);
  font-size: 0.92rem;
}

.auth-error {
  margin: 16px 0 0;
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 18px 22px 22px;
  border-top: 1px solid var(--line);
}

textarea {
  min-height: 52px;
  max-height: 180px;
  resize: vertical;
}

button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 0 14px;
  color: #ffffff;
  background: var(--accent);
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button.secondary,
button.ghost {
  color: var(--ink);
  background: #ffffff;
  border: 1px solid var(--line);
}

button.danger {
  background: var(--danger);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.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: 760px) {
  .app-shell {
    padding: 0;
  }

  .chat-layout {
    height: 100vh;
    grid-template-columns: 1fr;
    grid-template-rows: 240px 1fr;
    border: 0;
    border-radius: 0;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .composer,
  .auth-actions {
    grid-template-columns: 1fr;
  }
}