:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1a1d29;
  --muted: #6b7280;
  --line: #e6e8ef;
  --brand: #4f46e5;
  --brand-dark: #4338ca;
  --brand-soft: #eef0fe;
  --ok: #16a34a;
  --danger: #dc2626;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);
  --shadow-lg: 0 12px 40px rgba(16,24,40,.10);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, system-ui, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 560px; }

/* nav */
.nav { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.nav .container { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 800; font-size: 20px; letter-spacing: -.02em; color: var(--text); }
.brand span { color: var(--brand); }
.nav-links { display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  background: var(--brand); color: #fff; border: none; padding: 11px 18px;
  border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background .15s, transform .05s; text-decoration: none;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); }
.btn.ghost:hover { background: var(--brand-soft); }
.btn.sm { padding: 7px 12px; font-size: 13px; border-radius: 8px; }
.btn.danger { background: transparent; color: var(--danger); border: 1px solid #f3d0d0; }
.btn.danger:hover { background: #fdeaea; }
.btn.wide { width: 100%; }
.btn.gray { background: #eef0f4; color: var(--text); }
.btn.gray:hover { background: #e3e6ec; }

/* cards / inputs */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }
.field { margin-bottom: 16px; }
label.lbl { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], textarea, select {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
textarea { resize: vertical; min-height: 90px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.err { background: #fdeaea; color: var(--danger); padding: 10px 14px; border-radius: 10px; font-size: 14px; margin-bottom: 16px; }
.hint { background: var(--brand-soft); color: var(--brand-dark); padding: 10px 14px; border-radius: 10px; font-size: 14px; }

/* landing */
.hero { text-align: center; padding: 70px 0 40px; }
.hero h1 { font-size: 46px; line-height: 1.1; letter-spacing: -.03em; margin: 0 0 18px; }
.hero h1 .grad { background: linear-gradient(90deg, #4f46e5, #9333ea); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 19px; color: var(--muted); max-width: 620px; margin: 0 auto 30px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 50px 0; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.feature .ico { font-size: 30px; margin-bottom: 10px; }
.feature h3 { margin: 0 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

/* dashboard */
.page-head { display: flex; align-items: center; justify-content: space-between; margin: 30px 0 20px; flex-wrap: wrap; gap: 12px; }
.page-head h1 { margin: 0; font-size: 26px; letter-spacing: -.02em; }
.ai-box { background: linear-gradient(135deg, #eef0fe, #f5eefe); border: 1px solid #e0e0fb; border-radius: var(--radius); padding: 20px; margin-bottom: 26px; }
.ai-box h2 { margin: 0 0 4px; font-size: 18px; }
.ai-box .row { display: flex; gap: 10px; margin-top: 12px; }
.ai-box textarea { min-height: 60px; }
.form-list { display: flex; flex-direction: column; gap: 12px; }
.form-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.form-row .meta { min-width: 0; }
.form-row .meta h3 { margin: 0 0 3px; font-size: 16px; }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; text-transform: uppercase; letter-spacing: .03em; }
.badge.published { background: #e7f7ee; color: var(--ok); }
.badge.draft { background: #f1f2f5; color: var(--muted); }
.badge.closed { background: #fdeaea; color: var(--danger); }
.form-actions { display: flex; gap: 8px; flex-shrink: 0; }
.empty { text-align: center; padding: 50px 20px; color: var(--muted); }

/* builder */
.builder-grid { display: grid; grid-template-columns: 1fr 300px; gap: 22px; align-items: start; }
.q-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 12px; position: relative; }
.q-card .q-top { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.q-card .q-top input.q-label { font-size: 15px; font-weight: 600; flex: 1; }
.q-card select.q-type { width: auto; min-width: 140px; }
.q-opts { margin: 8px 0 0; padding-left: 4px; }
.q-opt-row { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.q-opt-row input { flex: 1; }
.q-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.icon-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 18px; padding: 4px 8px; border-radius: 6px; }
.icon-btn:hover { background: #f1f2f5; color: var(--danger); }
.side { position: sticky; top: 80px; }
.share-url { display: flex; gap: 6px; margin-top: 8px; }
.share-url input { font-size: 13px; }
.toggle { display: flex; align-items: center; gap: 8px; font-size: 14px; }

/* fill page */
.fill-wrap { max-width: 640px; margin: 30px auto; padding: 0 18px; }
.fill-head { background: linear-gradient(135deg, var(--brand), #7c3aed); color: #fff; border-radius: var(--radius) var(--radius) 0 0; padding: 30px 26px; }
.fill-head h1 { margin: 0 0 6px; font-size: 26px; }
.fill-head p { margin: 0; opacity: .92; }
.fill-body { background: var(--card); border: 1px solid var(--line); border-top: none; border-radius: 0 0 var(--radius) var(--radius); padding: 8px 26px 26px; }
.q-block { padding: 20px 0; border-bottom: 1px solid var(--line); }
.q-block:last-of-type { border-bottom: none; }
.q-block .q-q { font-weight: 600; margin-bottom: 4px; }
.q-block .req { color: var(--danger); }
.opt-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.opt-item { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.opt-item:hover { border-color: var(--brand); background: var(--brand-soft); }
.opt-item input { width: auto; }
.rating { display: flex; gap: 8px; }
.rating label { flex: 1; text-align: center; padding: 12px 0; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; font-weight: 600; }
.rating input { display: none; }
.rating input:checked + span { color: var(--brand); }
.rating label:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); color: var(--brand-dark); }

/* results */
.stat-row { display: flex; gap: 14px; margin-bottom: 24px; flex-wrap: wrap; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; flex: 1; min-width: 140px; }
.stat .n { font-size: 28px; font-weight: 800; letter-spacing: -.02em; }
.stat .l { color: var(--muted); font-size: 13px; }
.bar-row { margin-bottom: 10px; }
.bar-row .bar-top { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 4px; }
.bar-track { background: #eef0f4; border-radius: 8px; height: 10px; overflow: hidden; }
.bar-fill { background: var(--brand); height: 100%; border-radius: 8px; }
.text-answers { display: flex; flex-direction: column; gap: 8px; max-height: 320px; overflow-y: auto; }
.text-answer { background: #f8f9fb; border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; font-size: 14px; }
.report { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.report h1,.report h2,.report h3 { margin-top: 18px; }
.ai-badge { display: inline-flex; align-items: center; gap: 6px; background: linear-gradient(135deg,#4f46e5,#9333ea); color: #fff; padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 600; }

.mt { margin-top: 20px; }
.mb { margin-bottom: 20px; }
.center { text-align: center; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

@media (max-width: 720px) {
  .features { grid-template-columns: 1fr; }
  .builder-grid { grid-template-columns: 1fr; }
  .side { position: static; }
  .hero h1 { font-size: 34px; }
}