:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e3e6ea;
  --text: #1a1d21;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-soft: #eef4ff;
  --danger: #dc2626;
  --ok: #16a34a;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

button {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 7px;
  padding: 7px 14px;
  color: var(--text);
}
button:hover:not(:disabled) { border-color: #c7ccd3; background: #fafbfc; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button.primary:hover:not(:disabled) { background: #1d4fd8; }
button.danger { color: var(--danger); border-color: #f3c9c9; }

input[type="text"], input[type="password"], input[type="number"],
textarea, select {
  font: inherit;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
}
textarea { resize: vertical; line-height: 1.5; }
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; }
.hint { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

/* --- Chat --- */
.privacy-notice {
  align-self: center;
  max-width: 92%;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  background: #f1f3f6;
  border-radius: 8px;
  padding: 8px 12px;
  text-align: center;
}
.chat-log { display: flex; flex-direction: column; gap: 12px; }
.bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 14px;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.bubble.assistant {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.bubble.user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.bubble.error {
  align-self: center;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  font-size: 13.5px;
}
.typing { color: var(--muted); font-style: italic; font-size: 13.5px; }

.composer { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea { max-height: 140px; min-height: 44px; }

@media (max-width: 640px) {
  .bubble { max-width: 92%; }
}