:root {
  color-scheme: light;
  --bg: #f6f4ef;
  --card: #fffdf8;
  --ink: #1e1c19;
  --muted: #6b6459;
  --brand: #1f6f78;
  --border: #d8d2c5;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background: linear-gradient(160deg, #f3efe7, #fdfbf7 55%, #f4f8f8);
  color: var(--ink);
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.04);
}

.auth {
  max-width: 420px;
  margin: 2rem auto;
}

h1 {
  margin-top: 0;
}

.form-grid,
.chat-form {
  display: grid;
  gap: 0.5rem;
}

input,
textarea,
select,
button {
  font: inherit;
  border-radius: 8px;
}

input,
textarea,
select {
  border: 1px solid var(--border);
  padding: 0.6rem;
  background: #fff;
}

button {
  border: none;
  background: var(--brand);
  color: white;
  padding: 0.65rem 0.9rem;
  cursor: pointer;
}

button.secondary {
  background: #7b7a75;
}

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

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

.flash-wrap {
  margin-bottom: 1rem;
}

.flash {
  background: #fff8d9;
  border: 1px solid #e4d38b;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
}

.chat-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.history {
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem;
  background: #fff;
}

.msg {
  margin-bottom: 0.8rem;
  padding: 0.6rem;
  border-radius: 8px;
}

.msg.user {
  background: #edf8f9;
  margin-left: 2em;
}

.msg.assistant {
  background: #f7f2e9;
  margin-right: 2em;
}

.msg.pending {
  opacity: 0.85;
}

.msg.pending .msg-content {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.msg.pending .msg-content::before {
  content: "";
  width: 0.95rem;
  height: 0.95rem;
  border: 2px solid #cfd6d7;
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.msg .msg-content > :first-child {
  margin-top: 0;
}

.msg .msg-content > :last-child {
  margin-bottom: 0;
}

.msg .msg-content p {
  margin: 0;
  white-space: pre-wrap;
}

.clear-form {
  margin-top: 0.7rem;
}

.chat-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.error {
  margin: 0.1rem 0 0;
  color: var(--danger);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0.7rem;
  }

  .card {
    padding: 0.8rem;
  }

}