:root {
  color-scheme: light;
  --bg-top: #f5ede2;
  --bg-bottom: #d8e2ec;
  --card: rgba(255, 250, 244, 0.82);
  --card-strong: rgba(248, 241, 232, 0.96);
  --border: rgba(73, 55, 42, 0.12);
  --text: #24170f;
  --muted: #6c5a4f;
  --accent: #b44b2a;
  --accent-strong: #8f3316;
  --shadow: 0 18px 50px rgba(52, 32, 19, 0.15);
  --user-bubble: #201610;
  --assistant-bubble: #f7efe6;
  --success: #2e724c;
  --warning: #8a5c14;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 32%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

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

button {
  cursor: pointer;
  border: none;
}

textarea,
select,
input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

textarea:focus,
input:focus {
  border-color: rgba(180, 75, 42, 0.7);
  background: rgba(255, 255, 255, 0.96);
  transform: translateY(-1px);
}

.app-shell {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
}

.hero,
.settings-card,
.chat-card {
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 14px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.2rem);
  line-height: 0.98;
}

.settings-card,
.chat-card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 28px;
}

.settings-card {
  padding: 18px;
  margin-bottom: 14px;
}

.settings-card.is-collapsed {
  display: none;
}

.settings-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 0.92rem;
  font-weight: 700;
}

.field.full {
  grid-column: 1 / -1;
}

.settings-actions,
.composer-actions,
.status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.settings-actions {
  margin-top: 16px;
}

.settings-links {
  margin-top: 12px;
}

.inline-link,
.inline-button-link {
  color: var(--accent-strong);
  text-decoration: none;
  font-weight: 700;
}

.inline-link:hover,
.inline-link:focus-visible,
.inline-button-link:hover,
.inline-button-link:focus-visible {
  text-decoration: underline;
}

.inline-button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.primary-button,
.ghost-button {
  border-radius: 999px;
  padding: 12px 18px;
  min-height: 46px;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff7f1;
}

.ghost-button {
  background: rgba(36, 23, 15, 0.06);
  color: var(--text);
}

.primary-button:disabled,
.ghost-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.primary-button:not(:disabled):active,
.ghost-button:not(:disabled):active {
  transform: scale(0.98);
}

.hint {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.chat-card {
  padding: 16px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--warning);
  background: rgba(138, 92, 20, 0.12);
}

.status-pill.is-success {
  color: var(--success);
  background: rgba(46, 114, 76, 0.12);
}

.status-pill.is-loading {
  color: var(--accent);
  background: rgba(180, 75, 42, 0.12);
}

.status-text {
  font-size: 0.88rem;
  color: var(--muted);
  text-align: right;
}

.messages {
  display: grid;
  gap: 14px;
  min-height: 320px;
  max-height: min(62vh, 780px);
  overflow-y: auto;
  margin: 18px 0;
  padding-right: 4px;
}

.empty-state {
  padding: 28px 20px;
  border: 1px dashed rgba(36, 23, 15, 0.16);
  border-radius: 24px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.26);
  line-height: 1.6;
}

.message {
  display: grid;
  gap: 8px;
}

.message-role {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.message-body {
  max-width: 92%;
  padding: 14px 16px;
  border-radius: 24px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.message[data-role="user"] {
  justify-items: end;
}

.message[data-role="user"] .message-body {
  background: var(--user-bubble);
  color: #fff7f1;
  border-bottom-right-radius: 8px;
}

.message[data-role="assistant"] .message-body {
  background: var(--assistant-bubble);
  color: var(--text);
  border-bottom-left-radius: 8px;
}

.message[data-role="error"] .message-body {
  background: rgba(180, 75, 42, 0.12);
  color: #7d2e16;
  border: 1px solid rgba(180, 75, 42, 0.18);
}

.composer {
  display: grid;
  gap: 14px;
}

@media (max-width: 720px) {
  .hero {
    flex-direction: column;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .settings-actions,
  .composer-actions,
  .status-row {
    flex-direction: column;
    align-items: stretch;
  }

  .status-text {
    text-align: left;
  }

  .message-body {
    max-width: 100%;
  }
}