:root {
  --green: #21be3a;
  --green-dark: #189c2f;
  --green-light: #e8f5e8;
  --text: #1a1a1a;
  --muted: #737373;
  --border: #e2e2e2;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: #f7f8f7; color: var(--text); min-height: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select { font-family: inherit; }

.quiz-shell { min-height: 100vh; display: flex; flex-direction: column; }

.quiz-header {
  position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--border);
  padding: 14px 20px;
}
.quiz-header .logo { font-size: 19px; font-weight: 700; font-style: italic; color: var(--green-dark); display: block; margin-bottom: 10px; }
.quiz-progress { height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; }
.quiz-progress-bar { height: 100%; width: 0%; background: var(--green); transition: width .3s ease; }

.quiz-main { flex: 1; max-width: 480px; margin: 0 auto; width: 100%; padding: 36px 20px 40px; display: flex; flex-direction: column; }

.quiz-step { display: none; animation: quizFadeIn .25s ease; }
.quiz-step.is-active { display: block; }
@keyframes quizFadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.quiz-step h1 { font-size: 24px; line-height: 1.3; margin: 0 0 10px; }
.quiz-step h2 { font-size: 21px; line-height: 1.3; margin: 0 0 8px; }
.quiz-sub, .quiz-hint { font-size: 14px; color: var(--muted); margin: 0 0 22px; line-height: 1.5; }
.quiz-hint strong { color: var(--green-dark); }

.quiz-input {
  width: 100%; padding: 14px 15px; border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 17px; margin-bottom: 16px;
}
.quiz-input:focus { outline: none; border-color: var(--green); }
.quiz-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.quiz-row-2 label { display: block; font-size: 12.5px; font-weight: 600; color: #444; margin-bottom: 6px; }

.quiz-field { margin-bottom: 4px; }
.quiz-field label { display: block; font-size: 12.5px; font-weight: 600; color: #444; margin-bottom: 6px; }
.quiz-field-error { color: #c0392b; font-size: 12px; margin: -10px 0 14px; display: none; }
.quiz-field.has-error .quiz-field-error, .quiz-field-error.is-visible { display: block; }
.quiz-field.has-error .quiz-input { border-color: #c0392b; }

.quiz-choices { display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }
.quiz-choice {
  text-align: left; background: #fff; border: 1.5px solid var(--border); border-radius: 12px;
  padding: 16px 18px; font-size: 15px; font-weight: 600; cursor: pointer; display: flex; flex-direction: column; gap: 3px;
  transition: border-color .15s, background .15s;
}
.quiz-choice:hover { border-color: var(--green); }
.quiz-choice.is-selected { border-color: var(--green); background: var(--green-light); color: var(--green-dark); }
.quiz-choice span { font-weight: 400; font-size: 12.5px; color: var(--muted); }
.quiz-choice.is-selected span { color: var(--green-dark); opacity: .85; }

.quiz-checks { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.quiz-checks label {
  display: flex; align-items: center; gap: 10px; font-size: 14.5px; border: 1.5px solid var(--border);
  border-radius: 10px; padding: 12px 14px; cursor: pointer;
}
.quiz-checks input { width: 17px; height: 17px; accent-color: var(--green); }

.quiz-btn-primary {
  width: 100%; background: var(--green); color: #fff; border: none; border-radius: 999px;
  padding: 15px; font-size: 15.5px; font-weight: 700; cursor: pointer; margin-top: 6px;
}
.quiz-btn-primary:hover { background: var(--green-dark); }
.quiz-btn-primary:disabled { opacity: .6; cursor: not-allowed; }

.quiz-btn-outline {
  width: 100%; background: #fff; color: var(--green-dark); border: 1.5px solid var(--green); border-radius: 999px;
  padding: 13.5px; font-size: 14.5px; font-weight: 700; cursor: pointer; margin-top: 6px;
}
.quiz-btn-outline:hover { background: var(--green-light); }

.quiz-nav { max-width: 480px; margin: 0 auto; width: 100%; padding: 0 20px 24px; }
.quiz-btn-back { background: none; border: none; color: var(--muted); font-size: 13.5px; cursor: pointer; padding: 6px 0; }
.quiz-btn-back:hover { color: var(--text); text-decoration: underline; }
.quiz-btn-back[hidden] { display: none; }

.quiz-alert {
  background: #fdecea; color: #c0392b; border: 1px solid #f0c4c0; border-radius: 8px;
  padding: 10px 14px; font-size: 13px; margin-bottom: 16px; display: none;
}
.quiz-alert.is-visible { display: block; }

.quiz-switch { text-align: center; font-size: 13px; color: var(--muted); margin-top: 18px; }
.quiz-switch a { color: var(--green); font-weight: 700; }

/* Resultado */
.quiz-result-badge {
  display: inline-block; background: var(--green-light); color: var(--green-dark); font-size: 12.5px;
  font-weight: 700; padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}
.quiz-result-kcal {
  font-size: 46px; font-weight: 800; color: var(--green-dark); line-height: 1; margin: 4px 0 2px;
}
.quiz-result-kcal-label { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.quiz-result-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px;
}
.quiz-result-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px;
}
.quiz-result-card .rk-label { font-size: 11.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .3px; margin-bottom: 4px; }
.quiz-result-card .rk-value { font-size: 18px; font-weight: 700; }
.quiz-result-note {
  background: #fff3cd; color: #8a6800; border: 1px solid #f0dfa0; border-radius: 10px;
  padding: 12px 14px; font-size: 13px; margin-bottom: 20px; display: none;
}
.quiz-result-note.is-visible { display: block; }

.quiz-recommend-card {
  background: #fff; border: 1.5px solid var(--green); border-radius: 14px; padding: 16px; margin-bottom: 14px;
}
.quiz-recommend-eyebrow {
  font-size: 11px; font-weight: 800; color: var(--green-dark); text-transform: uppercase; letter-spacing: .4px;
  margin-bottom: 10px;
}
.quiz-recommend-body { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; text-align: left; }
.quiz-recommend-body img { width: 56px; height: 56px; object-fit: contain; border-radius: 10px; background: var(--green-light); flex-shrink: 0; }
.quiz-recommend-title { font-size: 15.5px; font-weight: 700; }
.quiz-recommend-reason { font-size: 12.5px; color: var(--muted); margin: 3px 0 6px; line-height: 1.35; }
.quiz-recommend-price { font-size: 15px; font-weight: 800; color: var(--green-dark); }
.quiz-recommend-price .rp-compare { font-size: 12px; font-weight: 600; color: var(--muted); text-decoration: line-through; margin-right: 6px; }

.quiz-benefit-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.quiz-benefit {
  display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 14px; font-size: 13.5px; text-align: left;
}
.quiz-benefit .qb-icon { font-size: 20px; flex-shrink: 0; }