/* ============================================
   SAFIR HAIR — Premium E-Commerce
   Design System & Global Styles
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700&display=swap');

/* ---- CSS Variables / Design Tokens ---- */
:root {
  /* Colors */
  --safira-deep: #0d1f3c;
  --safira-primary: #1a3a5c;
  --safira-medium: #2d5f8a;
  --safira-light: #4a8bb5;
  --safira-pale: #a8d0e6;
  
  --gold-primary: #c9a84c;
  --gold-light: #e8d5a3;
  --gold-glow: #f0e2bb;
  --gold-dark: #a08735;
  
  --white: #ffffff;
  --off-white: #f8f6f3;
  --cream: #f5f0e8;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --black: #0a0a0a;
  
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-accent: 'Outfit', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  
  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.15);
  --shadow-gold: 0 4px 20px rgba(201,168,76,0.25);
  --shadow-safira: 0 4px 20px rgba(26,58,92,0.2);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Layout */
  --max-width: 1280px;
  --max-width-narrow: 900px;
  --header-height: 80px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ---- Layout Utilities ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-5xl) 0;
}

.section--dark {
  background-color: var(--safira-deep);
  color: var(--white);
}

.section--cream {
  background-color: var(--cream);
}

.section--offwhite {
  background-color: var(--off-white);
}

/* ---- Typography ---- */
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.heading-1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 500;
  line-height: 1.2;
}

.heading-2 {
  font-family: var(--font-accent);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 500;
  line-height: 1.3;
}

.heading-3 {
  font-family: var(--font-accent);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.subtitle {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
}

.body-lg {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray-600);
}

.body-sm {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--gray-500);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn--primary {
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  color: var(--white);
  box-shadow: var(--shadow-gold);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,168,76,0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--gold-primary);
}

.btn--secondary:hover {
  background: var(--gold-primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--safira-deep);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--safira-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-safira);
}

.btn--outline {
  background: transparent;
  color: var(--safira-primary);
  border: 1.5px solid var(--safira-primary);
}

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

.btn--lg {
  padding: 18px 42px;
  font-size: 0.9375rem;
}

.btn--sm {
  padding: 10px 22px;
  font-size: 0.8125rem;
}

.btn--icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ---- Header / Navigation ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: all var(--transition-base);
}

.header--transparent {
  background: transparent;
}

.header--scrolled {
  background: rgba(13, 31, 60, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo img {
  height: 45px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.15em;
}

.header__logo-text span {
  color: var(--gold-primary);
  font-weight: 600;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.header__nav-links {
  display: flex;
  gap: var(--space-xl);
}

.header__nav-link {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  position: relative;
  padding: 4px 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold-primary);
  transition: width var(--transition-base);
}

.header__nav-link:hover {
  color: var(--gold-primary);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__action-btn {
  color: rgba(255,255,255,0.8);
  font-size: 1.25rem;
  transition: color var(--transition-fast);
  position: relative;
}

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

.header__cart-count {
  position: absolute;
  top: -6px;
  right: -8px;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--gold-primary);
  color: var(--white);
  font-size: 0.625rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Menu */
.header__menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.header__menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13,31,60,0.85) 0%,
    rgba(26,58,92,0.6) 50%,
    rgba(13,31,60,0.4) 100%
  );
  z-index: 1;
}

.hero__particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
}

.hero__particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--gold-primary);
  border-radius: var(--radius-full);
  opacity: 0;
  animation: particleFloat 6s infinite ease-in-out;
}

@keyframes particleFloat {
  0%, 100% { opacity: 0; transform: translateY(0) scale(0); }
  10% { opacity: 0.6; }
  50% { opacity: 0.3; transform: translateY(-100px) scale(1); }
  90% { opacity: 0; }
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 650px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 20px;
  background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: var(--radius-full);
  font-family: var(--font-accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s ease-out;
}

.hero__badge svg {
  width: 14px;
  height: 14px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.5vw, 5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out 0.15s both;
}

.hero__title em {
  font-style: italic;
  color: var(--gold-primary);
  font-weight: 400;
}

.hero__description {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-2xl);
  max-width: 500px;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.45s both;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255,255,255,0.5);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero__scroll-indicator span {
  font-family: var(--font-accent);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold-primary), transparent);
  animation: scrollPulse 2s infinite ease-in-out;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; height: 30px; }
  50% { opacity: 1; height: 50px; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---- Benefits Bar ---- */
.benefits-bar {
  background: var(--safira-deep);
  border-bottom: 1px solid rgba(201,168,76,0.15);
  padding: var(--space-lg) 0;
}

.benefits-bar__inner {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  flex-wrap: wrap;
}

.benefits-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
}

.benefits-bar__icon {
  color: var(--gold-primary);
  font-size: 1rem;
}

/* ---- Product Cards ---- */
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
  border: 1px solid var(--gray-100);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.product-card__image {
  position: relative;
  padding-top: 120%;
  overflow: hidden;
  background: var(--off-white);
}

.product-card__image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image img {
  transform: scale(1.08);
}

.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 14px;
  background: var(--gold-primary);
  color: var(--white);
  font-family: var(--font-accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  z-index: 2;
}

.product-card__quick-actions {
  position: absolute;
  right: 12px;
  top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition-base);
  z-index: 2;
}

.product-card:hover .product-card__quick-actions {
  opacity: 1;
  transform: translateX(0);
}

.product-card__quick-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  color: var(--safira-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.product-card__quick-btn:hover {
  background: var(--safira-primary);
  color: var(--white);
}

.product-card__info {
  padding: var(--space-lg);
}

.product-card__category {
  font-family: var(--font-accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 6px;
}

.product-card__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-card__description {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-bottom: var(--space-md);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.product-card__price-current {
  font-family: var(--font-accent);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--safira-deep);
}

.product-card__price-old {
  font-size: 0.875rem;
  color: var(--gray-400);
  text-decoration: line-through;
}

.product-card__rating {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
}

.product-card__stars {
  color: var(--gold-primary);
  font-size: 0.75rem;
  display: flex;
  gap: 2px;
}

.product-card__rating-count {
  font-size: 0.75rem;
  color: var(--gray-400);
}

/* ---- Products Grid ---- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header .subtitle {
  margin-bottom: var(--space-sm);
}

.section-header .heading-1 {
  margin-bottom: var(--space-md);
}

.section-header .body-lg {
  max-width: 600px;
  margin: 0 auto;
}

.section-header--left {
  text-align: left;
}

.section-header--left .body-lg {
  margin: 0;
}

/* ---- Science Section ---- */
.science {
  position: relative;
  overflow: hidden;
}

.science__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.science__image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.science__image img {
  border-radius: var(--radius-xl);
}

.science__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,58,92,0.3), transparent);
  border-radius: var(--radius-xl);
}

.science__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.science__feature {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.science__feature-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--safira-primary), var(--safira-medium));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  font-size: 1.25rem;
}

.science__feature-title {
  font-family: var(--font-accent);
  font-weight: 600;
  color: var(--safira-deep);
  margin-bottom: 4px;
}

.science__feature-text {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ---- Quiz CTA Section ---- */
.quiz-cta {
  position: relative;
  background: linear-gradient(135deg, var(--safira-deep) 0%, var(--safira-primary) 100%);
  overflow: hidden;
}

.quiz-cta__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.1), transparent 70%);
  top: -200px;
  right: -200px;
}

.quiz-cta__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4xl);
  position: relative;
  z-index: 2;
}

.quiz-cta__content {
  flex: 1;
}

.quiz-cta__visual {
  flex: 1;
  display: flex;
  justify-content: center;
}

.quiz-cta__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.quiz-cta__step {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.quiz-cta__step-number {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--gold-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gold-primary);
  flex-shrink: 0;
}

.quiz-cta__step-text {
  color: rgba(255,255,255,0.8);
  font-size: 0.9375rem;
}

/* DNA Animation */
.dna-helix {
  width: 200px;
  height: 400px;
  position: relative;
}

.dna-strand {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-primary);
  animation: dnaRotate 4s infinite ease-in-out;
}

@keyframes dnaRotate {
  0%, 100% { transform: translateX(-40px); opacity: 0.3; }
  50% { transform: translateX(40px); opacity: 1; }
}

/* ---- Tools / Pro Tools Section ---- */
.tools-section {
  position: relative;
}

.tools-section__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--off-white) 0%, var(--white) 100%);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.tool-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  border: 1px solid var(--gray-100);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-primary), var(--safira-medium), var(--gold-primary));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-lg);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--safira-deep), var(--safira-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  font-size: 1.75rem;
}

.tool-card__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: var(--space-sm);
}

.tool-card__desc {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.tool-card__price {
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--safira-primary);
}

/* ---- Blog Section ---- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.blog-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition-base);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.blog-card__image {
  position: relative;
  padding-top: 60%;
  overflow: hidden;
}

.blog-card__image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image img {
  transform: scale(1.05);
}

.blog-card__content {
  padding: var(--space-xl);
}

.blog-card__tag {
  font-family: var(--font-accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: var(--space-sm);
}

.blog-card__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.blog-card__excerpt {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--gray-400);
}

/* ---- Testimonials ---- */
.testimonials-slider {
  display: flex;
  gap: var(--space-xl);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: var(--space-md);
}

.testimonials-slider::-webkit-scrollbar {
  display: none;
}

.testimonial-card {
  flex-shrink: 0;
  width: 380px;
  scroll-snap-align: start;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  border: 1px solid var(--gray-100);
  position: relative;
}

.testimonial-card__quote {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--gold-primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.testimonial-card__text {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--safira-primary), var(--gold-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 0.875rem;
}

.testimonial-card__name {
  font-family: var(--font-accent);
  font-weight: 600;
  color: var(--safira-deep);
  font-size: 0.875rem;
}

.testimonial-card__role {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.testimonial-card__stars {
  color: var(--gold-primary);
  font-size: 0.75rem;
  display: flex;
  gap: 2px;
  margin-top: 4px;
}

/* ---- Newsletter ---- */
.newsletter {
  background: linear-gradient(135deg, var(--safira-deep), var(--safira-primary));
  position: relative;
  overflow: hidden;
}

.newsletter__inner {
  text-align: center;
  position: relative;
  z-index: 2;
}

.newsletter__form {
  display: flex;
  max-width: 500px;
  margin: var(--space-xl) auto 0;
  gap: var(--space-sm);
}

.newsletter__input {
  flex: 1;
  padding: 14px 20px;
  border: 1.5px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.newsletter__input::placeholder {
  color: rgba(255,255,255,0.5);
}

.newsletter__input:focus {
  border-color: var(--gold-primary);
}

/* ---- Footer ---- */
.footer {
  background: var(--black);
  color: rgba(255,255,255,0.6);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  max-width: 320px;
}

.footer__brand-logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--white);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.footer__brand-logo span {
  color: var(--gold-primary);
}

.footer__brand-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.footer__social-link:hover {
  background: var(--gold-primary);
  border-color: var(--gold-primary);
  color: var(--white);
}

.footer__column-title {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.footer__link {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--gold-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}

.footer__payment {
  display: flex;
  gap: var(--space-md);
  color: rgba(255,255,255,0.3);
  font-size: 1.5rem;
}

/* ---- Scroll Animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---- Kits Section ---- */
.kits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.kit-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-100);
  transition: all var(--transition-base);
  position: relative;
}

.kit-card--featured {
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-gold);
}

.kit-card--featured::before {
  content: 'MAIS VENDIDO';
  position: absolute;
  top: 16px;
  right: -30px;
  padding: 4px 40px;
  background: var(--gold-primary);
  color: var(--white);
  font-family: var(--font-accent);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  transform: rotate(45deg);
  z-index: 2;
}

.kit-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.kit-card__image {
  height: 250px;
  overflow: hidden;
}

.kit-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kit-card__content {
  padding: var(--space-xl);
}

.kit-card__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: var(--space-sm);
}

.kit-card__items {
  margin-bottom: var(--space-lg);
}

.kit-card__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.kit-card__item::before {
  content: '✦';
  color: var(--gold-primary);
  font-size: 0.625rem;
}

.kit-card__prices {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.kit-card__price-new {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--safira-primary);
}

.kit-card__price-old {
  font-size: 0.9375rem;
  color: var(--gray-400);
  text-decoration: line-through;
}

.kit-card__savings {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(16,185,129,0.1);
  color: var(--success);
  font-family: var(--font-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .science__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .kits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .quiz-cta__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-3xl) 0;
  }
  
  .header__nav-links {
    display: none;
  }
  
  .header__menu-toggle {
    display: flex;
  }
  
  .hero {
    min-height: 600px;
  }
  
  .hero__cta {
    flex-direction: column;
  }
  
  .hero__cta .btn {
    width: 100%;
  }
  
  .benefits-bar__inner {
    gap: var(--space-lg);
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .kits-grid {
    grid-template-columns: 1fr;
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .newsletter__form {
    flex-direction: column;
  }
  
  .testimonial-card {
    width: 300px;
  }
}

@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .benefits-bar__inner {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }
}

/* ---- Quiz Page Styles ---- */
.quiz-page {
  min-height: 100vh;
  background: linear-gradient(180deg, var(--safira-deep) 0%, var(--safira-primary) 40%, var(--off-white) 100%);
  padding-top: calc(var(--header-height) + var(--space-3xl));
}

.quiz-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.quiz-progress {
  margin-bottom: var(--space-2xl);
}

.quiz-progress__bar {
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.quiz-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.quiz-progress__text {
  text-align: center;
  margin-top: var(--space-sm);
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
}

.quiz-card {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  box-shadow: var(--shadow-2xl);
}

.quiz-card__question {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: var(--space-xl);
  text-align: center;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--white);
}

.quiz-option:hover {
  border-color: var(--safira-medium);
  background: rgba(26,58,92,0.03);
}

.quiz-option.selected {
  border-color: var(--gold-primary);
  background: rgba(201,168,76,0.05);
}

.quiz-option__radio {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  border: 2px solid var(--gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.quiz-option.selected .quiz-option__radio {
  border-color: var(--gold-primary);
  background: var(--gold-primary);
}

.quiz-option.selected .quiz-option__radio::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--white);
}

.quiz-option__text {
  font-size: 0.9375rem;
  color: var(--gray-700);
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2xl);
}

/* Quiz Results */
.quiz-result {
  text-align: center;
}

.quiz-result__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-xl);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201,168,76,0.4); }
  50% { box-shadow: 0 0 0 15px rgba(201,168,76,0); }
}

.quiz-result__type {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: var(--space-sm);
}

.quiz-result__title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  color: var(--safira-deep);
  margin-bottom: var(--space-md);
}

.quiz-result__description {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.quiz-result__products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

/* ---- Loading / Spinner ---- */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--gold-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}