:root {
  --primary-color: #000000;
  --primary-hover: #111111;
  --bg-color: #ffffff;
  --text-color: #18181b;
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-500: #71717a;
  --option-bg: #f4f4f5;
  --option-border: #e4e4e7;
  --option-selected-bg: #000000;
  --option-selected-text: #ffffff;
  --green: #04aa6d;
  --font-body: 'Inter', sans-serif;
  --radius: 12px;
  --transition: 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.2;
}

/* Utilities */
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.text-primary { color: var(--primary-color); }
.text-green { color: var(--green); }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-gray-400 { color: #a1a1aa; }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: #52525b; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.rounded-xl { border-radius: var(--radius); }
.bg-gray-50 { background-color: #fafafa; }
.bg-gray-100 { background-color: var(--gray-100); }
.line-through { text-decoration: line-through; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.w-full { width: 100%; }
.text-xs { font-size: 0.75rem; }
.block { display: block; }
.cursor-pointer { cursor: pointer; }
.font-normal { font-weight: 400; }

/* Layout */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Intro Hero */
#intro-screen {
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.4s ease;
}

.intro-logo {
  text-align: center;
  padding: 1.25rem 0 1rem;
}

.intro-logo img {
  height: 36px;
  width: auto;
  display: inline-block;
}

.intro-protocol-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.intro-headline {
  font-size: 1.5rem;
  line-height: 1.25;
  text-align: center;
  margin-bottom: 0.75rem;
  margin-top: 0.5rem;
}

.intro-sub {
  font-size: 0.9rem;
  color: var(--gray-500);
  text-align: center;
  margin-bottom: 1.5rem;
}

/* Progress Bar */
.progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--gray-200);
  z-index: 50;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary-color);
  width: 0%;
  transition: width 0.4s ease;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 0;
  position: relative;
  min-height: 56px;
}

.back-btn {
  position: absolute;
  left: 0;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--gray-500);
  display: none;
}

.back-btn svg {
  width: 24px;
  height: 24px;
}

.logo img {
  height: 32px;
  width: auto;
  display: block;
}

/* Step */
.step-container {
  display: none;
  flex-direction: column;
  flex: 1;
  animation: fadeIn 0.3s ease forwards;
}

.step-container.active {
  display: flex;
}

/* Step image */
.step-image {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  object-fit: cover;
  max-height: 300px;
}

/* Keyword colors */
.text-orange { color: #e65c00; }
.text-green  { color: #229231; }

/* Options */
.option-btn {
  width: 100%;
  padding: 0.85rem 1rem;
  min-height: 60px;
  background-color: var(--option-bg);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-color);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.option-btn:hover {
  background-color: var(--gray-200);
}

.option-btn.selected {
  background-color: var(--option-selected-bg);
  color: var(--option-selected-text);
  border-color: var(--option-selected-bg);
}

.opt-emoji {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1;
}

.opt-text {
  flex: 1;
}

.opt-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #d4d4d8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #52525b;
  transition: all var(--transition);
}

.opt-arrow svg {
  width: 14px;
  height: 14px;
}

.option-btn.selected .opt-arrow {
  background: #ffffff;
  color: #000000;
}

/* Primary Button */
.btn-primary {
  width: 100%;
  padding: 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  transition: background-color var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-primary:disabled {
  background-color: var(--gray-200);
  cursor: not-allowed;
  color: var(--gray-500);
}

/* Info block */
.info-content {
  margin-top: 0.5rem;
}

/* Compare Slider */
.compare-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  user-select: none;
  touch-action: none;
  cursor: ew-resize;
}

.compare-before {
  display: block;
  width: 100%;
}

.compare-before img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.compare-after {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
}

.compare-after img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  background: rgba(255,255,255,0.9);
  cursor: ew-resize;
  z-index: 10;
}

.compare-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 42px;
  height: 42px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #333;
  font-weight: 700;
  white-space: nowrap;
}

.compare-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  color: var(--gray-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Side-by-side comparison (step 6) */
.sbs-compare {
  display: flex;
  gap: 0.4rem;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.sbs-item {
  flex: 1;
  position: relative;
}

.sbs-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.sbs-label {
  position: absolute;
  bottom: 0.5rem;
  left: 0.5rem;
  background: rgba(0,0,0,0.65);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.06em;
}

.sbs-label-green {
  background: #229231;
}

/* Info box */
.info-box {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 1rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Loading Screen */
.loading-screen {
  text-align: center;
  padding: 3rem 0;
  animation: fadeIn 0.4s ease;
}

.loader-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--gray-200);
  border-radius: 4px;
  margin: 2rem 0;
  overflow: hidden;
}

.loader-bar {
  height: 100%;
  background-color: var(--primary-color);
  width: 0%;
  transition: width 0.1s linear;
  border-radius: 4px;
}

.testimonial {
  background-color: var(--gray-100);
  padding: 1rem;
  border-radius: var(--radius);
  margin-top: 2rem;
  font-size: 0.9rem;
  display: none;
  animation: fadeIn 0.5s ease;
}

.testimonial.visible {
  display: block;
}

/* Sales Page */
.sales-page {
  padding-bottom: 5rem;
  animation: fadeIn 0.4s ease;
}

.sales-logo {
  display: block;
  max-width: 180px;
  margin: 0 auto 1.5rem;
}

.sales-hero {
  text-align: center;
  margin-bottom: 1.5rem;
}

.hero-img {
  width: 100%;
  max-width: 340px;
  border-radius: var(--radius);
  display: block;
  margin: 0 auto 1.25rem;
  object-fit: cover;
}

.sales-hero h1 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.sales-hero p {
  font-size: 0.95rem;
  color: var(--gray-500);
}

/* Divider */
.divider {
  height: 1px;
  background: var(--gray-200);
  margin: 1.5rem 0;
}

/* Section title */
.section-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-align: center;
}

/* Before/After grid */
.before-after-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.ba-item img {
  width: 100%;
  display: block;
  border-radius: var(--radius);
}

/* Arguments */
.arguments-section {
  margin-bottom: 1.5rem;
}

.arguments-section img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  display: block;
}

/* Bonus */
.bonus-section {
  margin-bottom: 1.5rem;
}

.bonus-title {
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
}

.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.bonus-item img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
}

/* Offer Card */
.offer-card {
  background-color: var(--gray-100);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  margin-bottom: 1.5rem;
}

.offer-card h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  text-align: center;
}

.offer-list {
  list-style: none;
  margin-bottom: 0.5rem;
}

.offer-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.35rem 0;
  font-size: 0.9rem;
}

.offer-list li svg {
  flex-shrink: 0;
  margin-top: 2px;
}

/* Price */
.price-block {
  text-align: center;
  margin: 1.25rem 0;
}

.price-old {
  font-size: 0.95rem;
  color: var(--gray-500);
  text-decoration: line-through;
}

.price-new {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.1;
}

.price-installment {
  font-size: 0.82rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

/* Guarantee */
.guarantee-section {
  text-align: center;
  margin-bottom: 1.5rem;
}

.guarantee-section img {
  max-width: 160px;
  margin: 0 auto 0.75rem;
  display: block;
}

.guarantee-section p {
  font-size: 0.82rem;
  color: var(--gray-500);
}

/* CTA Button */
.btn-cta {
  width: 100%;
  padding: 1.1rem;
  background-color: #16a34a;
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background-color var(--transition);
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.3);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.btn-cta:hover {
  background-color: #15803d;
}

.secure-text {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-align: center;
  margin-top: 0.6rem;
}

/* FAQ */
.faq {
  margin-top: 2rem;
}

.faq h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.faq details {
  margin-bottom: 0.5rem;
  background-color: var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq summary {
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq details p {
  padding: 0 1rem 0.75rem;
  font-size: 0.85rem;
  color: #52525b;
  line-height: 1.5;
}

/* Loading header with percentage */
.loader-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--gray-500);
}

#loading-pct {
  font-weight: 700;
  color: var(--text-color);
}

/* Review cards */
.review-cards {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.review-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1rem;
}

.review-stars {
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}

.review-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.review-author {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
}

.review-text {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-color);
}

/* Result Image (sales page) */
.result-img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
  margin-bottom: 1rem;
}

.hidden { display: none !important; }