:root {
  --bg: #f2f6fc;
  --panel: #ffffff;
  --ink: #10223f;
  --subtle: #4a5f84;
  --accent: #003781;
  --warn: #a33a20;
  --border: #cdd8eb;
  --ai-bg: #f5f8ff;
  --ai-border: #c6d6f4;
  --user-bg: #e7efff;
  --user-border: #a8c0f0;
  --feedback-bg: #fff4ef;
  --feedback-border: #f0cbbd;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #dce9ff 0%, var(--bg) 55%);
}

.layout {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.hero h1 {
  margin: 0 0 8px 0;
  font-size: 1.9rem;
}

.hero p {
  margin: 0;
  color: var(--subtle);
}

.ask-form {
  display: grid;
  gap: 10px;
}

textarea,
input,
button {
  font: inherit;
}

textarea,
input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
}

textarea {
  resize: vertical;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  opacity: 0.92;
}

.actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
}

.confirm {
  background: var(--accent);
}

.decline {
  background: #8f2f19;
}

.warn-lite {
  background: #f5e4df;
  color: #7e2e1c;
  border: 1px solid #e5bfb3;
}

.answer {
  white-space: pre-wrap;
  line-height: 1.5;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #fbfcfa;
}

.chat-thread {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(180deg, #fbfdff 0%, #f5f8ff 100%);
  padding: 10px;
  display: grid;
  gap: 10px;
  max-height: 430px;
  overflow-y: auto;
}

.chat-bubble {
  max-width: 85%;
  border-radius: 14px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 1px rgba(10, 20, 14, 0.04);
}

.chat-bubble.user {
  margin-left: auto;
  background: var(--user-bg);
  border-color: var(--user-border);
}

.chat-bubble.assistant {
  margin-right: auto;
  background: var(--ai-bg);
  border-color: var(--ai-border);
}

.chat-role {
  font-size: 0.78rem;
  color: #2d4d84;
  margin-bottom: 4px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.chat-text {
  white-space: pre-wrap;
  line-height: 1.45;
}

.meta {
  color: var(--subtle);
  font-size: 0.92rem;
}

.answer-card {
  display: grid;
  gap: 8px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.section-head h3 {
  margin: 0;
  font-size: 1rem;
}

.source-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 10px;
}

.source-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #f8faff;
}

#feedback-sources .history-item {
  background: var(--feedback-bg);
  border-color: var(--feedback-border);
}

.debug-panel {
  margin-top: 10px;
}

.debug-panel summary {
  cursor: pointer;
  color: var(--subtle);
}

.hidden {
  display: none;
}

.history {
  display: grid;
  gap: 10px;
}

.history-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.history-item .q {
  font-weight: 700;
}

.history-item .vote {
  color: var(--subtle);
  font-size: 0.92rem;
}

.inline-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.inline-controls select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

.inline-controls input {
  width: auto;
  min-width: 180px;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge.pending {
  background: #e7eefb;
  color: #355181;
}

.badge.confirm {
  background: #dbe7ff;
  color: #003781;
}

.badge.decline {
  background: #fde1d9;
  color: #ab3c1f;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.pager {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.top-space {
  margin-top: 12px;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

@media (max-width: 640px) {
  .layout {
    padding: 12px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

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