:root {
  --companion-paper: #f4efe5;
  --companion-ink: #26322a;
  --companion-moss: #61745d;
  --companion-clay: #a9654a;
  --companion-border: #d8cbb8;
}

html:not(.companion-authenticated) #root {
  display: none;
}

#companion-auth-shell {
  color: var(--companion-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.companion-auth-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at top left, rgba(169, 101, 74, 0.12), transparent 35rem),
    var(--companion-paper);
}

.companion-auth-card {
  width: min(42rem, 100%);
  padding: clamp(1.75rem, 5vw, 3rem);
  border: 1px solid var(--companion-border);
  border-radius: 1.75rem;
  background: rgba(255, 250, 241, 0.96);
  box-shadow: 0 1.5rem 4rem rgba(65, 52, 38, 0.13);
}

.companion-auth-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--companion-moss);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.companion-auth-card h1 {
  margin: 0 0 1rem;
  font: 500 clamp(2.3rem, 8vw, 4.25rem) / 0.98 Georgia, serif;
  letter-spacing: -0.045em;
}

.companion-auth-card p {
  max-width: 35rem;
  font-size: 1.05rem;
  line-height: 1.65;
}

.companion-auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.companion-auth-button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.15rem;
  border: 1px solid var(--companion-moss);
  border-radius: 0.9rem;
  background: var(--companion-moss);
  color: white;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.companion-auth-button.secondary {
  background: transparent;
  color: var(--companion-moss);
}

.companion-auth-notice {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: 0.85rem;
  background: #eee6d8;
  line-height: 1.5;
}

.companion-auth-notice.error {
  background: #fff0e7;
  color: #7b321f;
}

.companion-account-bar {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--companion-border);
  background: rgba(244, 239, 229, 0.96);
  backdrop-filter: blur(12px);
  font-size: 0.8rem;
}

.companion-account-bar button,
.companion-history-toggle {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--companion-border);
  border-radius: 999px;
  background: #fffaf1;
  color: var(--companion-ink);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.companion-history-panel {
  padding: 1rem;
  border-bottom: 1px solid var(--companion-border);
  background: #fffaf1;
}

.companion-history-panel[hidden] {
  display: none;
}

.companion-history-panel > div {
  width: min(56rem, 100%);
  margin: 0 auto;
}

.companion-history-panel details {
  margin: 0.6rem 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--companion-border);
  border-radius: 0.8rem;
  background: white;
}

.companion-history-message {
  margin: 0.65rem 0;
  padding-left: 0.75rem;
  border-left: 3px solid var(--companion-border);
  white-space: pre-wrap;
  line-height: 1.55;
}

.companion-history-message strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--companion-moss);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 600px) {
  .companion-account-bar {
    align-items: flex-start;
    flex-direction: column;
  }
}