:root {
  --bg: #0f1720;
  --card: #121d2a;
  --line: #2a3b50;
  --text: #f4f7fb;
  --muted: #b8c4d1;
  --brand: #2cb36b;
  --brand-dark: #1f8a52;
  --danger: #ff7b7b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.container { width: min(1040px, 92%); margin: 0 auto; }
.topbar { border-bottom: 1px solid var(--line); background: #0c131c; }
.topbar p { margin: 0; padding: .7rem 0; color: var(--muted); text-align: center; font-size: .92rem; }
.hero { padding: 2.2rem 0 1.2rem; background: radial-gradient(circle at 20% 10%, #203347, #0f1720); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1rem; }
.eyebrow { color: #95e7ba; margin: 0 0 .35rem; font-weight: 700; }
h1 { margin: 0 0 .5rem; font-size: clamp(1.7rem, 4.5vw, 2.7rem); line-height: 1.08; }
.subhead { margin: 0; color: var(--muted); }
.hero-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: .9rem 1rem; }
.hero-card h2 { margin: .2rem 0 .45rem; font-size: 1.08rem; }
.hero-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.hero-card li { margin: .4rem 0; }

.survey-wrap { padding: 1.2rem 0 2.4rem; }
.survey-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.progress-row { margin-bottom: 1rem; }
.progress-bar { width: 100%; height: 10px; background: #1c2a3a; border-radius: 999px; overflow: hidden; }
#progressFill { width: 14.3%; height: 100%; background: var(--brand); transition: width .25s ease; }
#progressText { margin: .45rem 0 0; color: var(--muted); font-size: .92rem; }

.step { display: none; }
.step.active { display: block; }
.step h2 { margin: .2rem 0 .6rem; font-size: clamp(1.18rem, 3vw, 1.6rem); }
.hint { color: var(--muted); margin-top: 0; }
.error { color: var(--danger); min-height: 1.1rem; margin: .45rem 0 0; }

input, select {
  width: 100%; background: #0f1722; color: #fff; border: 1px solid #41566d;
  border-radius: 10px; padding: .86rem; font-size: 1rem;
}

.options { display: grid; gap: .55rem; }
.option {
  border: 1px solid #48617b; background: #122131; color: #fff;
  text-align: left; padding: .9rem .95rem; border-radius: 10px; cursor: pointer;
  font-size: 1rem;
}
.option:hover { border-color: #6e8fb0; }
.option.selected { border-color: var(--brand); background: #133222; }

.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .65rem; }
.grid2 label { display: flex; flex-direction: column; gap: .35rem; font-weight: 600; }

.nav-row { margin-top: 1rem; display: flex; gap: .55rem; flex-wrap: wrap; }
.btn { border: 0; border-radius: 10px; padding: .9rem 1rem; font-weight: 700; cursor: pointer; min-height: 46px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary { background: transparent; color: #fff; border: 1px solid #4b637c; }

.form-message { margin-top: .75rem; min-height: 1.2rem; color: #bce7cb; }
.footer { border-top: 1px solid var(--line); padding: 1rem 0 1.4rem; text-align: center; color: var(--muted); }

@media (max-width: 860px) {
  .container { width: 94%; }
  .hero-grid, .grid2 { grid-template-columns: 1fr; }
  .hero { padding: 1.1rem 0 .8rem; }
  .hero-card { padding: .75rem .8rem; }
  h1 { font-size: clamp(1.35rem, 7vw, 1.8rem); }
  .subhead { font-size: .96rem; }

  .survey-wrap { padding-top: .6rem; }
  .survey-card { padding: .8rem .75rem 1rem; border-radius: 12px; }
  .step h2 { font-size: clamp(1.05rem, 5.4vw, 1.3rem); }
  .hint { font-size: .92rem; }

  input, select { font-size: 16px; padding: .86rem; }
  .option { font-size: 1rem; padding: .95rem .95rem; min-height: 52px; }

  .nav-row {
    position: static;
    background: transparent;
    padding-top: .35rem;
    margin-top: .85rem;
    z-index: 2;
  }
  .step { padding-bottom: .25rem; }
  .step[data-step="7"] { padding-bottom: .8rem; }
  .btn { flex: 1 1 0; width: 100%; min-height: 50px; font-size: 1rem; }
  #backBtn { flex: 0 0 auto; width: 34%; }
  #nextBtn { flex: 1 1 auto; }

  /* Option steps auto-advance; show only Back as a compact control */
  body.option-step .nav-row {
    justify-content: flex-start;
    margin-top: .4rem;
  }
  body.option-step #backBtn {
    width: auto;
    min-width: 106px;
  }
  body.option-step #nextBtn {
    display: none !important;
  }

  body.final-step #backBtn,
  body.final-step #nextBtn {
    min-height: 52px;
  }
}

@media (max-width: 480px) {
  .topbar p { font-size: .82rem; padding: .6rem 0; }
  .eyebrow { font-size: .88rem; }
  .hero-card { display: none; }
  .subhead { margin-bottom: .2rem; }
  .grid2 { gap: .55rem; }
  .progress-bar { height: 9px; }
}