:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1d2129;
  --muted: #667085;
  --border: #e2e5ea;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --danger: #d92d20;
  --success-bg: #e8f6ee;
  --success-text: #146c3a;
  --warn-bg: #fff6e0;
  --warn-text: #8a5a00;
  --error-bg: #fdecea;
  --error-text: #a3221a;
  --code-bg: #f0f2f5;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161a;
    --surface: #1c1f25;
    --text: #e6e8eb;
    --muted: #9aa1ad;
    --border: #2d323b;
    --accent: #5b8ff5;
    --accent-text: #0d1117;
    --danger: #f97066;
    --success-bg: #12301f;
    --success-text: #7bd8a2;
    --warn-bg: #33270d;
    --warn-text: #f5c86b;
    --error-bg: #3a1714;
    --error-text: #f9a49c;
    --code-bg: #262a32;
  }
}

:root[data-theme="dark"] {
  --bg: #14161a;
  --surface: #1c1f25;
  --text: #e6e8eb;
  --muted: #9aa1ad;
  --border: #2d323b;
  --accent: #5b8ff5;
  --accent-text: #0d1117;
  --danger: #f97066;
  --success-bg: #12301f;
  --success-text: #7bd8a2;
  --warn-bg: #33270d;
  --warn-text: #f5c86b;
  --error-bg: #3a1714;
  --error-text: #f9a49c;
  --code-bg: #262a32;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans KR", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 16px 64px;
}

h1 { font-size: 26px; margin: 0; }
h2 { font-size: 19px; margin: 0 0 12px; }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.notice { font-weight: 600; color: var(--muted); margin: 0; }
.caption { color: var(--muted); font-size: 13px; margin: 4px 0 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

label { display: block; font-weight: 600; margin-bottom: 6px; }

textarea, input[type="password"], input[type="file"] {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

textarea { min-height: 120px; resize: vertical; }

textarea:focus, input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 9px 14px;
  white-space: nowrap;
}

button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.6; cursor: progress; }

button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { color: var(--danger); }
button.small { padding: 4px 10px; font-size: 13px; }
button.block { width: 100%; }

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.elapsed { color: var(--muted); font-size: 13px; margin-top: 4px; min-height: 1.4em; }

.answer { overflow-wrap: anywhere; }
.answer :first-child { margin-top: 0; }
.answer pre, .answer code { background: var(--code-bg); border-radius: 6px; }
.answer pre { padding: 10px; overflow-x: auto; }
.answer code { padding: 1px 4px; }
.answer table { border-collapse: collapse; display: block; overflow-x: auto; }
.answer th, .answer td { border: 1px solid var(--border); padding: 4px 8px; }

.sources { border-top: 1px solid var(--border); margin-top: 14px; padding-top: 10px; }

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.row:last-child { border-bottom: none; }
.row .name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.row .meta { color: var(--muted); font-size: 13px; white-space: nowrap; }

.message { border-radius: 8px; padding: 10px 14px; margin: 10px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.message.success { background: var(--success-bg); color: var(--success-text); }
.message.warning { background: var(--warn-bg); color: var(--warn-text); }
.message.error { background: var(--error-bg); color: var(--error-text); }
.message.info { background: var(--code-bg); color: var(--muted); }

.actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

progress { width: 100%; height: 10px; margin-top: 10px; }

.hidden { display: none !important; }

@media (max-width: 640px) {
  main { padding-top: 18px; }
  h1 { font-size: 21px; }
  .model-grid { grid-template-columns: 1fr; }
  .row { flex-wrap: wrap; gap: 4px 12px; }
  .row .name { flex-basis: 100%; }
}