:root {
  --bg: #f6f6f3;
  --surface: #ffffff;
  --surface-2: #f0f0ec;
  --text: #1c1d20;
  --muted: #676a72;
  --border: #e2e2dc;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef0ff;
  --on-accent: #ffffff;
  --ok: #15803d;
  --danger: #b42318;
  --danger-soft: #fef1f0;
  --shadow: 0 1px 2px rgba(20, 20, 30, .05), 0 8px 24px rgba(20, 20, 30, .06);
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --surface: #1a1b1f;
    --surface-2: #232429;
    --text: #ececef;
    --muted: #9a9ca5;
    --border: #2e3036;
    --accent: #8b84ff;
    --accent-hover: #a29cff;
    --accent-soft: #24233d;
    --on-accent: #0f0e1f;
    --ok: #4ade80;
    --danger: #ff8a80;
    --danger-soft: #2d1a1a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
code { font-size: .9em; background: var(--surface-2); padding: 0 .3em; border-radius: 4px; }

/* ---------- Header ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1180px; margin: 0 auto; padding: 18px 20px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--accent); text-decoration: none; }
.brand span { color: var(--text); font-weight: 700; font-size: 18px; letter-spacing: -.01em; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.pill {
  font-size: 12px; font-weight: 600; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; max-width: 260px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px;
  background: transparent; border: 1px solid var(--border); color: var(--text); cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); }

main { max-width: 1180px; margin: 0 auto; padding: 8px 20px 64px; }

/* ---------- Compose ---------- */
.intro { max-width: 640px; margin: 28px auto 26px; text-align: center; }
h1 { font-size: clamp(32px, 5vw, 48px); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 14px; }
h1 em { font-style: normal; color: var(--accent); }
.lede { color: var(--muted); font-size: 17px; margin: 0; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.compose { max-width: 640px; margin: 0 auto; padding: 22px; display: flex; flex-direction: column; }

.drop {
  border: 1.5px dashed var(--border); border-radius: 12px; background: var(--surface-2);
  padding: 26px 16px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
  outline: none;
}
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop svg { color: var(--accent); }
.drop-title { font-weight: 650; margin: 8px 0 2px; }
.drop-sub { color: var(--muted); margin: 0; font-size: 14px; }
.link { color: var(--accent); font-weight: 600; }
.drop.has-file { padding: 14px; cursor: default; border-style: solid; }

.file-chip { display: flex; align-items: center; gap: 12px; text-align: left; }
.file-badge {
  flex: none; font-size: 11px; font-weight: 800; letter-spacing: .04em;
  color: var(--on-accent); background: var(--accent); border-radius: 7px; padding: 8px 8px;
}
.file-meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.file-name { font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { color: var(--muted); font-size: 13px; }

.gslides { margin-top: 14px; }
.or { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--border); }

.row { display: flex; gap: 8px; align-items: center; }
.row.end { justify-content: flex-end; }
.row input { flex: 1; min-width: 0; }

input[type="url"], input[type="password"], input[type="text"], textarea, select {
  width: 100%; font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
}
textarea { resize: vertical; min-height: 84px; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

.field-label { display: block; font-weight: 650; font-size: 14px; margin: 18px 0 6px; }
.muted { color: var(--muted); font-weight: 500; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 18px; }
.chip {
  font: inherit; font-size: 13px; color: var(--text); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 11px; cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

button { font: inherit; }
.primary, .secondary, .ghost {
  border-radius: 10px; padding: 10px 16px; font-weight: 650; cursor: pointer; border: 1px solid transparent;
  transition: background .15s, border-color .15s, opacity .15s;
}
.primary { background: var(--accent); color: var(--on-accent); }
.primary:hover:not(:disabled) { background: var(--accent-hover); }
.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.secondary:hover:not(:disabled) { background: var(--surface-2); }
.ghost { background: transparent; color: var(--muted); }
.ghost:hover { color: var(--text); }
.small { padding: 6px 10px; font-size: 13px; }
.big { padding: 13px 18px; font-size: 16px; }
.full { width: 100%; }
button:disabled { opacity: .45; cursor: not-allowed; }

.fine { color: var(--muted); font-size: 12.5px; margin: 10px 0 0; text-align: center; }
.dialog .fine { text-align: left; margin-top: 6px; }

.how {
  list-style: none; padding: 0; margin: 26px auto 0; max-width: 900px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; counter-reset: how;
}
.how li { color: var(--muted); font-size: 14px; padding-left: 34px; position: relative; counter-increment: how; }
.how li::before {
  content: counter(how); position: absolute; left: 0; top: 0;
  width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center;
  font-size: 12px; font-weight: 700; color: var(--accent); background: var(--accent-soft);
}
.how strong { color: var(--text); display: block; }

/* ---------- Working ---------- */
.work { max-width: 520px; margin: 60px auto; padding: 28px; }
.work h2 { margin: 0 0 18px; font-size: 22px; letter-spacing: -.02em; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.steps .dot {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border); flex: none; position: relative;
}
.steps li.active { color: var(--text); font-weight: 600; }
.steps li.active .dot { border-color: var(--accent); border-top-color: transparent; animation: spin .8s linear infinite; }
.steps li.done { color: var(--text); }
.steps li.done .dot { border-color: var(--ok); background: var(--ok); }
.steps li.done .dot::after {
  content: ""; position: absolute; left: 5px; top: 1.5px; width: 5px; height: 9px;
  border: solid var(--surface); border-width: 0 2px 2px 0; transform: rotate(45deg);
}
.steps li.failed .dot { border-color: var(--danger); background: var(--danger); }
@keyframes spin { to { transform: rotate(360deg); } }
.work-detail { color: var(--muted); font-size: 14px; min-height: 21px; margin: 18px 0 0; }
.work-error { margin-top: 16px; background: var(--danger-soft); border-radius: 10px; padding: 14px; }
.work-error p { margin: 0 0 12px; color: var(--danger); font-weight: 550; }

/* ---------- Result ---------- */
.result-bar { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin: 18px 0 14px; }
.result-bar h2 { margin: 0; font-size: 24px; letter-spacing: -.02em; }
.result-sub { color: var(--muted); margin: 4px 0 0; max-width: 720px; }
.hint { background: var(--accent-soft); border-radius: 10px; padding: 10px 14px; margin: 0 0 14px; font-size: 14px; }

.result-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: start; }
.preview { display: grid; gap: 14px; }
.page-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); }
.page-card .page-label { font-size: 12px; color: var(--muted); padding: 6px 10px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; }
.page-card img, .page-card svg { display: block; width: 100%; height: auto; background: #fff; }

.answers { padding: 16px; position: sticky; top: 14px; max-height: calc(100vh - 28px); display: flex; flex-direction: column; }
.answers-head { display: flex; align-items: baseline; justify-content: space-between; }
.answers h3 { margin: 0 0 10px; font-size: 16px; }
.count { color: var(--muted); font-size: 13px; }
.answer-list { overflow: auto; display: grid; gap: 10px; margin-bottom: 12px; padding-right: 2px; }
.answer { border: 1px solid var(--border); border-radius: 10px; padding: 9px 10px; background: var(--surface); }
.answer-where { font-size: 12px; color: var(--muted); margin-bottom: 5px; display: flex; gap: 6px; }
.answer-where b { color: var(--accent); font-weight: 700; white-space: nowrap; flex: none; }
.answer-where span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.answer textarea { min-height: 38px; padding: 7px 9px; font-size: 14px; border-radius: 8px; }
.answer label.check { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.empty-note { color: var(--muted); font-size: 14px; }

/* ---------- Dialog / toast ---------- */
.dialog {
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text);
  width: min(460px, calc(100vw - 32px)); padding: 22px; box-shadow: var(--shadow);
}
.dialog::backdrop { background: rgba(10, 10, 20, .45); }
.dialog h2 { margin: 0 0 4px; font-size: 20px; }
.radio-row { border: 0; padding: 0; margin: 0 0 18px; }
.radio-row label { display: inline-flex; gap: 6px; align-items: center; margin: 0 14px 4px 0; font-size: 14px; }

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px;
  box-shadow: var(--shadow); max-width: calc(100vw - 32px);
}

@media (max-width: 860px) {
  .result-grid { grid-template-columns: 1fr; }
  .answers { position: static; max-height: none; }
  .how { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .compose { padding: 16px; }
  .row { flex-wrap: wrap; }
  .result-bar .row { width: 100%; }
  .result-bar .row button { flex: 1; }
}