/* =========================================================
   KlaroNail Premium Formula — Main Stylesheet
   Mobile-first | WCAG 2.2 AA | All breakpoints included
   ========================================================= */

/* ── 1. CSS Custom Properties ─────────────────────────── */
:root {
  --primary:        #059669;
  --primary-dark:   #047857;
  --primary-light:  #ecfdf5;
  --secondary:      #1E3A8A;
  --secondary-dark: #1a3070;
  --accent:         #F59E0B;
  --accent-dark:    #D97706;
  --dark:           #111827;
  --gray-800:       #1F2937;
  --gray-600:       #4B5563;
  --gray-400:       #9CA3AF;
  --gray-200:       #E5E7EB;
  --gray-100:       #F3F4F6;
  --gray-50:        #F9FAFB;
  --white:          #FFFFFF;

  --font-heading: 'Poppins', sans-serif;
  --font-body:    'Inter', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 40px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,.07);
  --shadow-md: 0 4px 24px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 48px rgba(0,0,0,.14);
  --shadow-xl: 0 20px 72px rgba(0,0,0,.18);

  --transition: all .3s ease;
  --container-max: 1200px;
  --section-py: clamp(48px, 8vw, 96px);
  --section-px: clamp(16px, 4vw, 32px);
}

/* ── 2. Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--dark);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── 3. Typography ────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 3vw, 1.6rem); }
h4 { font-size: clamp(1rem, 2.5vw, 1.25rem); }
p  { font-size: clamp(.9rem, 2vw, 1rem); color: var(--gray-600); }

.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent  { color: var(--accent); }
.text-white   { color: var(--white); }

/* ── 4. Layout Utilities ──────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-px);
}
.section { padding-block: var(--section-py); }
.section-alt { background: var(--gray-50); }
.section-dark { background: var(--secondary); color: var(--white); }
.section-green { background: var(--primary-light); }

.section-label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: .3rem .9rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}
.section-title { margin-bottom: .75rem; }
.section-sub   { max-width: 640px; margin-inline: auto; margin-bottom: 2.5rem; font-size: clamp(.9rem,2vw,1.05rem); }

/* ── 5. Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(.9rem,2vw,1rem);
  padding: .85rem 2rem;
  border-radius: 50px;
  transition: var(--transition);
  min-height: 48px;
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(5,150,105,.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(5,150,105,.45);
}
.btn-gold {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(245,158,11,.35);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,158,11,.45);
}
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-white {
  background: var(--white);
  color: var(--primary);
  font-weight: 700;
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* ── 6. Navigation ────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: .9rem;
  gap: 1.5rem;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}
.brand-logo {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
}
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--dark);
}
.brand-name .brand-accent { color: var(--primary); }

.nav-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 1.5rem var(--section-px);
  gap: .75rem;
  box-shadow: var(--shadow-md);
}
.nav-menu.open { display: flex; }
.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: .95rem;
  color: var(--gray-800);
  padding: .4rem 0;
  transition: color .2s;
  position: relative;
}
.nav-link:hover { color: var(--primary); }
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .9rem;
  padding: .55rem 1.25rem;
  border-radius: 50px;
  transition: var(--transition);
  width: fit-content;
}
.btn-nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 6px;
  transition: var(--transition);
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 7. Hero Section ──────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #f0fdf8 0%, #eff6ff 50%, #fefce8 100%);
  padding-block: clamp(48px,8vw,96px);
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23059669' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid rgba(5,150,105,.2);
  padding: .35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
}
.hero-title {
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: var(--dark);
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--gray-600);
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  align-items: center;
}
.trust-badge {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--gray-600);
}
.trust-badge i { color: var(--primary); font-size: .9rem; }

.hero-image-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-image-glow {
  position: absolute;
  width: 80%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(5,150,105,.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-image-wrap img {
  width: min(340px, 90%);
  height: auto;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 24px 48px rgba(5,150,105,.25));
  animation: floatImg 5s ease-in-out infinite;
}
@keyframes floatImg {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

/* ── 8. Why KlaroNail ─────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.why-card {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  align-items: flex-start;
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.why-icon {
  flex-shrink: 0;
  width: 52px; height: 52px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 1.3rem;
}
.why-card h3 { font-size: 1rem; margin-bottom: .35rem; }
.why-card p  { font-size: .88rem; }

/* ── 9. Benefits Section ──────────────────────────────── */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.benefit-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.benefit-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.benefit-icon {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--primary-light), #dbeafe);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.8rem;
  color: var(--primary);
  transition: var(--transition);
}
.benefit-card:hover .benefit-icon { background: var(--primary); color: var(--white); }
.benefit-card h3 { font-size: 1rem; margin-bottom: .5rem; }
.benefit-card p  { font-size: .88rem; }

/* ── 10. Ingredients ──────────────────────────────────── */
.ingredients-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.ingredient-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.ingredient-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--primary); }
.ingredient-icon {
  flex-shrink: 0;
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-size: 1.4rem;
}
.ingredient-card h3 { font-size: 1rem; margin-bottom: .4rem; color: var(--dark); }
.ingredient-card p  { font-size: .87rem; }

/* ── 11. How It Works ─────────────────────────────────── */
.how-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
.steps-list { display: flex; flex-direction: column; gap: 1.75rem; }
.step-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.step-number {
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
}
.step-item h3 { font-size: 1rem; margin-bottom: .35rem; }
.step-item p  { font-size: .88rem; }
.how-image-wrap { text-align: center; }
.how-image-wrap img {
  width: min(420px, 100%);
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin: 0 auto;
}

/* ── 12. Why Customers Love ───────────────────────────── */
.love-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.love-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition);
}
.love-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.love-card-icon {
  width: 64px; height: 64px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.6rem;
  color: var(--primary);
}
.love-card h3 { font-size: 1rem; margin-bottom: .5rem; }
.love-card p  { font-size: .88rem; }

/* ── 13. Testimonials ─────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.stars { color: var(--accent); font-size: 1rem; margin-bottom: .75rem; letter-spacing: .05em; }
.testimonial-text { font-size: .92rem; color: var(--gray-600); font-style: italic; margin-bottom: 1.25rem; line-height: 1.7; }
.testimonial-author { display: flex; align-items: center; gap: .85rem; }
.author-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}
.author-name { font-weight: 700; font-size: .9rem; color: var(--dark); }
.author-meta { font-size: .78rem; color: var(--gray-400); }
.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .75rem;
  color: var(--primary);
  font-weight: 600;
  margin-top: .25rem;
}

/* ── 14. FAQ ──────────────────────────────────────────── */
.faq-list { max-width: 780px; margin-inline: auto; display: flex; flex-direction: column; gap: .75rem; }
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.4rem;
  gap: 1rem;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(.88rem, 2vw, .95rem);
  color: var(--dark);
  user-select: none;
  transition: color .2s;
  width: 100%;
  text-align: left;
}
.faq-item.open .faq-question { color: var(--primary); }
.faq-toggle {
  flex-shrink: 0;
  width: 28px; height: 28px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem;
  color: var(--gray-600);
  transition: var(--transition);
}
.faq-item.open .faq-toggle { background: var(--primary); color: var(--white); transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding-inline: 1.4rem;
}
.faq-item.open .faq-answer { max-height: 600px; padding-bottom: 1.25rem; }
.faq-answer p { font-size: .9rem; }

/* ── 15. Pricing Section ──────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}
.pricing-card {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.pricing-card.featured { border-color: var(--primary); box-shadow: var(--shadow-lg); }
.pricing-card.best-value { border-color: var(--accent); }
.pricing-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 1rem;
  min-height: 32px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .3rem .8rem;
  border-radius: 50px;
}
.badge-popular { background: var(--primary); color: var(--white); }
.badge-value   { background: var(--accent); color: var(--white); }
.badge-ship    { background: var(--gray-100); color: var(--gray-600); border: 1px solid var(--gray-200); }
.badge-save    { background: #fef3c7; color: var(--accent-dark); border: 1px solid #fde68a; }

.pricing-image {
  margin: 0 auto 1.25rem;
  width: min(180px, 80%);
  height: auto;
  filter: drop-shadow(0 12px 24px rgba(0,0,0,.12));
  transition: transform .4s ease;
}
.pricing-card:hover .pricing-image { transform: scale(1.04) translateY(-4px); }

.pricing-bottles { font-size: .82rem; font-weight: 600; color: var(--gray-400); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .4rem; }
.pricing-name    { font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem; color: var(--dark); margin-bottom: 1rem; }
.pricing-price-block { margin-bottom: 1.25rem; }
.pricing-per { font-size: 2.4rem; font-family: var(--font-heading); font-weight: 800; color: var(--dark); }
.pricing-per span { font-size: 1rem; color: var(--gray-400); font-weight: 500; }
.pricing-total { font-size: .82rem; color: var(--gray-400); margin-top: .25rem; }

.pricing-perks { margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: .6rem; }
.perk { display: flex; align-items: center; gap: .5rem; font-size: .85rem; color: var(--gray-600); justify-content: center; }
.perk i { color: var(--primary); font-size: .9rem; }

/* ── 16. Final CTA ────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 60%, var(--secondary-dark) 100%);
  padding-block: clamp(56px,10vw,112px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23fff' fill-opacity='0.04'%3E%3Ccircle cx='40' cy='40' r='20'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.cta-section h2 { color: var(--white); position: relative; z-index: 1; }
.cta-section p  { color: rgba(255,255,255,.8); max-width: 560px; margin: 1rem auto 2rem; position: relative; z-index: 1; }
.cta-btns { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; position: relative; z-index: 1; }
.cta-note  { font-size: .82rem; color: rgba(255,255,255,.65); margin-top: 1.25rem; position: relative; z-index: 1; }

/* ── 17. Footer ───────────────────────────────────────── */
.site-footer { background: var(--dark); color: rgba(255,255,255,.8); padding-block: clamp(40px,6vw,72px); }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand .footer-logo {
  display: flex; align-items: center; gap: .5rem;
  margin-bottom: 1rem;
}
.footer-brand .brand-name { color: var(--white); }
.footer-tagline { font-size: .88rem; color: rgba(255,255,255,.6); margin-bottom: 1.25rem; max-width: 280px; }
.footer-heading { font-family: var(--font-heading); font-size: .85rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--white); margin-bottom: 1rem; }
.footer-links ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .88rem; color: rgba(255,255,255,.65); transition: color .2s; }
.footer-links a:hover { color: var(--primary); }
.footer-email {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--primary);
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
  word-break: break-all;
}
.footer-email:hover { color: var(--accent); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 2rem; }
.footer-disclaimer p { font-size: .78rem; color: rgba(255,255,255,.45); margin-bottom: .6rem; line-height: 1.65; }
.footer-copy { margin-top: 1rem; }
.footer-copy p { font-size: .8rem; color: rgba(255,255,255,.4); }
.footer-secure-icons { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-top: .75rem; }
.footer-secure-icons i { font-size: 1.5rem; color: rgba(255,255,255,.3); }

/* ── 18. Popup Modal ──────────────────────────────────── */
.popup-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
}
.popup-overlay.active { opacity: 1; visibility: visible; }
.popup-modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  text-align: center;
  box-shadow: var(--shadow-xl);
  transform: scale(.92);
  transition: transform .35s ease;
}
.popup-overlay.active .popup-modal { transform: scale(1); }
.popup-close {
  position: absolute; top: .85rem; right: .85rem;
  width: 32px; height: 32px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600);
  font-size: .9rem;
  transition: var(--transition);
}
.popup-close:hover { background: var(--gray-200); }
.popup-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: .3rem .9rem;
  border-radius: 50px;
  margin-bottom: .75rem;
}
.popup-modal h2 { font-size: clamp(1.4rem,4vw,1.75rem); margin-bottom: .5rem; }
.popup-modal p  { font-size: .9rem; color: var(--gray-600); margin-bottom: 1rem; }
.popup-modal img { width: min(160px,80%); margin: 0 auto .75rem; filter: drop-shadow(0 8px 20px rgba(5,150,105,.2)); }
.popup-price { margin-bottom: 1.25rem; }
.popup-price-per { font-size: 1.8rem; font-family: var(--font-heading); font-weight: 800; color: var(--primary); display: block; }
.popup-price-label { font-size: .8rem; color: var(--gray-400); }
.btn-popup {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: .9rem 2rem;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(245,158,11,.35);
  transition: var(--transition);
  width: 100%; justify-content: center;
  margin-bottom: .75rem;
}
.btn-popup:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(245,158,11,.45); }
.popup-note { font-size: .78rem; color: var(--gray-400); display: flex; align-items: center; justify-content: center; gap: .4rem; }

/* ── 19. Mobile Sticky CTA ────────────────────────────── */
.sticky-mobile-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 990;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  padding: .85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,.2);
  transform: translateY(100%);
  transition: transform .4s ease;
}
.sticky-mobile-cta.visible { transform: translateY(0); }
.sticky-mobile-cta a {
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9rem;
  display: flex; align-items: center; gap: .5rem;
  white-space: nowrap;
}
.sticky-mobile-cta .sticker-price {
  background: var(--accent);
  color: var(--white);
  font-size: .78rem;
  font-weight: 700;
  padding: .15rem .5rem;
  border-radius: 4px;
}

/* ── 20. Scroll Reveal ────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-left  { opacity: 0; transform: translateX(-28px); transition: opacity .6s ease, transform .6s ease; }
.reveal-right { opacity: 0; transform: translateX(28px);  transition: opacity .6s ease, transform .6s ease; }
.reveal-left.visible, .reveal-right.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
.delay-5 { transition-delay: .5s; }

/* ── 21. Blog — Listing Page ──────────────────────────── */
.blog-hero {
  background: linear-gradient(135deg, var(--primary-light), #eff6ff);
  padding-block: clamp(36px,6vw,72px);
}
.blog-search-wrap { max-width: 520px; margin: 2rem auto 0; }
.blog-search-bar {
  display: flex;
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  overflow: hidden;
  transition: border-color .2s;
}
.blog-search-bar:focus-within { border-color: var(--primary); }
.blog-search-bar input {
  flex: 1;
  border: none;
  padding: .75rem 1.25rem;
  font-size: .9rem;
  outline: none;
  color: var(--dark);
  min-width: 0;
}
.blog-search-bar button {
  background: var(--primary);
  color: var(--white);
  padding: .75rem 1.25rem;
  font-size: .9rem;
  flex-shrink: 0;
}

.blog-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.blog-categories { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem; }
.cat-btn {
  padding: .35rem 1rem;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  border: 1.5px solid var(--gray-200);
  color: var(--gray-600);
  background: var(--white);
  transition: var(--transition);
  cursor: pointer;
}
.cat-btn:hover, .cat-btn.active { background: var(--primary); color: var(--white); border-color: var(--primary); }

.blog-featured {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
}
.blog-featured img { width: 100%; height: 240px; object-fit: cover; }
.blog-featured-body { padding: 1.75rem; }
.post-meta { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-bottom: .75rem; }
.post-category {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--primary);
  background: var(--primary-light);
  padding: .2rem .7rem;
  border-radius: 50px;
}
.post-date, .post-read { font-size: .78rem; color: var(--gray-400); }
.post-title { font-size: clamp(1.1rem,3vw,1.5rem); margin-bottom: .5rem; color: var(--dark); }
.post-title a { color: inherit; transition: color .2s; }
.post-title a:hover { color: var(--primary); }
.post-excerpt { font-size: .88rem; color: var(--gray-600); margin-bottom: 1rem; }

.blog-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.blog-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.blog-card img { width: 100%; height: 200px; object-fit: cover; }
.blog-card-body { padding: 1.25rem; }
.blog-card .post-title { font-size: 1rem; }

/* Sidebar */
.blog-sidebar { display: flex; flex-direction: column; gap: 1.75rem; }
.sidebar-widget {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
}
.sidebar-title { font-size: .9rem; font-weight: 700; font-family: var(--font-heading); color: var(--dark); margin-bottom: 1rem; padding-bottom: .75rem; border-bottom: 2px solid var(--primary); }
.recent-post { display: flex; gap: .85rem; padding-block: .75rem; border-bottom: 1px solid var(--gray-100); }
.recent-post:last-child { border-bottom: none; padding-bottom: 0; }
.recent-post img { width: 64px; height: 56px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.recent-post-title { font-size: .82rem; font-weight: 600; color: var(--dark); line-height: 1.35; margin-bottom: .25rem; }
.recent-post-title a { color: inherit; }
.recent-post-title a:hover { color: var(--primary); }
.recent-post-date { font-size: .74rem; color: var(--gray-400); }

/* Blog Article */
.article-hero {
  background: linear-gradient(135deg, var(--primary-light), #eff6ff);
  padding-block: clamp(32px,6vw,64px);
}
.article-hero img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin-top: 2rem;
}
.breadcrumb { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; font-size: .8rem; color: var(--gray-400); margin-bottom: 1.25rem; }
.breadcrumb a { color: var(--gray-400); transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--gray-400); }

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
.article-content h2 { font-size: clamp(1.25rem,3vw,1.65rem); margin: 2rem 0 .75rem; color: var(--dark); }
.article-content h3 { font-size: clamp(1rem,2.5vw,1.25rem); margin: 1.5rem 0 .5rem; color: var(--dark); }
.article-content p  { margin-bottom: 1.1rem; font-size: clamp(.9rem,2vw,.98rem); line-height: 1.75; }
.article-content ul, .article-content ol { padding-left: 1.5rem; margin-bottom: 1.1rem; }
.article-content li { font-size: .95rem; line-height: 1.7; margin-bottom: .4rem; color: var(--gray-600); }
.article-content ul li { list-style: disc; }
.article-content ol li { list-style: decimal; }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.toc-widget { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius-md); padding: 1.25rem; margin-bottom: 2rem; }
.toc-widget h4 { font-size: .88rem; margin-bottom: .75rem; color: var(--dark); }
.toc-widget ol { padding-left: 1.25rem; }
.toc-widget li { font-size: .84rem; margin-bottom: .35rem; }
.toc-widget a { color: var(--primary); transition: color .2s; }
.toc-widget a:hover { color: var(--primary-dark); }

.article-cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: var(--white);
  text-align: center;
  margin: 2.5rem 0;
}
.article-cta-banner h3 { color: var(--white); margin-bottom: .5rem; }
.article-cta-banner p  { color: rgba(255,255,255,.85); margin-bottom: 1.25rem; font-size: .9rem; }

.social-share { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin: 2rem 0; }
.social-share span { font-size: .85rem; font-weight: 600; color: var(--dark); }
.share-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .4rem .9rem;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  transition: var(--transition);
  color: var(--white);
}
.share-fb { background: #1877F2; }
.share-tw { background: #000; }
.share-pi { background: #E60023; }
.share-em { background: var(--gray-600); }
.share-btn:hover { opacity: .85; transform: translateY(-1px); }

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

/* ── 22. Contact / Policy Pages ──────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--primary-light), #eff6ff);
  padding-block: clamp(32px,6vw,72px);
  text-align: center;
}
.page-body { max-width: 820px; margin-inline: auto; }
.page-body h2 { font-size: clamp(1.2rem,3vw,1.5rem); margin: 2rem 0 .75rem; color: var(--dark); }
.page-body h3 { font-size: clamp(1rem,2.5vw,1.2rem); margin: 1.5rem 0 .5rem; color: var(--dark); }
.page-body p  { margin-bottom: 1rem; font-size: clamp(.88rem,2vw,.96rem); line-height: 1.75; }
.page-body ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.page-body ul li { list-style: disc; font-size: .93rem; margin-bottom: .4rem; color: var(--gray-600); }
.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
  transition: var(--transition);
}
.contact-card:hover { box-shadow: var(--shadow-md); }
.contact-card-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-card h3 { font-size: .95rem; margin-bottom: .3rem; }
.contact-card p, .contact-card a { font-size: .88rem; color: var(--gray-600); }
.contact-card a { color: var(--primary); }

/* ── 23. 404 Page ─────────────────────────────────────── */
.page-404 { min-height: 80vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 2rem; }
.page-404 .err-code { font-size: clamp(5rem,20vw,9rem); font-family: var(--font-heading); font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: .5rem; }
.page-404 h1  { font-size: clamp(1.4rem,4vw,2rem); margin-bottom: .75rem; }
.page-404 p   { max-width: 420px; margin: 0 auto 2rem; }

/* ── 24. Pagination ───────────────────────────────────── */
.pagination { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; margin-top: 2.5rem; }
.page-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--gray-200);
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-600);
  background: var(--white);
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active { background: var(--primary); color: var(--white); border-color: var(--primary); }

/* ── 25. Utility / Helpers ────────────────────────────── */
.sr-only { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }
.skip-link { position:absolute;top:-40px;left:0;background:var(--primary);color:#fff;padding:8px 16px;z-index:10000;border-radius:0 0 8px 0;transition:top .2s; }
.skip-link:focus { top:0; }
.gradient-text { background:linear-gradient(135deg,var(--primary),var(--secondary)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }

/* ── 26. Focus Visible (Accessibility) ───────────────── */
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 4px; }

/* ── 27. Media Queries ────────────────────────────────── */

/* 480px+ */
@media (min-width: 480px) {
  .why-grid           { grid-template-columns: 1fr; }
  .blog-cards-grid    { grid-template-columns: 1fr; }
  .testimonials-grid  { grid-template-columns: 1fr; }
  .related-grid       { grid-template-columns: 1fr 1fr; }
}

/* 576px+ */
@media (min-width: 576px) {
  .benefits-grid      { grid-template-columns: 1fr 1fr; }
  .pricing-grid       { grid-template-columns: 1fr; max-width: 380px; margin-inline: auto; }
  .love-grid          { grid-template-columns: 1fr 1fr; }
  .why-grid           { grid-template-columns: 1fr 1fr; }
  .blog-featured img  { height: 300px; }
}

/* 768px+ */
@media (min-width: 768px) {
  .hamburger          { display: none; }
  .nav-menu           {
    display: flex;
    flex-direction: row;
    position: static;
    border: none;
    padding: 0;
    gap: 1.75rem;
    box-shadow: none;
    background: transparent;
  }
  .hero-grid          { grid-template-columns: 1fr 1fr; }
  .hero-image-wrap    { order: 1; }
  .hero-content       { order: 0; }
  .blog-layout        { grid-template-columns: 1fr 280px; }
  .article-layout     { grid-template-columns: 1fr 280px; }
  .how-grid           { grid-template-columns: 1fr 1fr; }
  .footer-grid        { grid-template-columns: 1fr 1fr; }
  .ingredients-grid   { grid-template-columns: 1fr 1fr; }
  .blog-cards-grid    { grid-template-columns: 1fr 1fr; }
  .testimonials-grid  { grid-template-columns: 1fr 1fr; }
  .sticky-mobile-cta  { display: none; }
}

/* 992px+ */
@media (min-width: 992px) {
  .benefits-grid      { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid       { grid-template-columns: repeat(3, 1fr); max-width: unset; margin-inline: unset; }
  .love-grid          { grid-template-columns: repeat(4, 1fr); }
  .why-grid           { grid-template-columns: repeat(3, 1fr); }
  .testimonials-grid  { grid-template-columns: repeat(3, 1fr); }
  .footer-grid        { grid-template-columns: 2fr 1fr 1fr 1.5fr; }
  .ingredients-grid   { grid-template-columns: repeat(3, 1fr); }
  .blog-featured img  { height: 380px; }
  .related-grid       { grid-template-columns: repeat(3, 1fr); }
}

/* 1200px+ */
@media (min-width: 1200px) {
  .benefits-grid      { grid-template-columns: repeat(3, 1fr); }
  .hero-image-wrap img { width: 420px; }
  .blog-layout        { grid-template-columns: 1fr 300px; }
  .article-layout     { grid-template-columns: 1fr 300px; }
}

/* 1400px+ */
@media (min-width: 1400px) {
  :root { --container-max: 1320px; }
}

/* Print */
@media print {
  .site-header, .sticky-mobile-cta, .popup-overlay, .site-footer { display: none; }
  body { color: #000; }
  a { color: #000; text-decoration: underline; }
}
⚙️ js/script.js
/* =========================================================
   KlaroNail — Main JavaScript
   Nav · FAQ · Popup · Scroll Reveal · Mobile CTA · Search
   ========================================================= */

"use strict";

/* ── 1. Header Scroll Effect ────────────────────────── */
const header = document.getElementById("siteHeader");
if (header) {
  window.addEventListener("scroll", () => {
    header.classList.toggle("scrolled", window.scrollY > 20);
  }, { passive: true });
}

/* ── 2. Mobile Navigation ───────────────────────────── */
const hamburger = document.getElementById("hamburger");
const navMenu   = document.getElementById("navMenu");

if (hamburger && navMenu) {
  hamburger.addEventListener("click", () => {
    const isOpen = navMenu.classList.toggle("open");
    hamburger.classList.toggle("active", isOpen);
    hamburger.setAttribute("aria-expanded", String(isOpen));
    document.body.style.overflow = isOpen ? "hidden" : "";
  });

  // Close on nav-link click
  navMenu.querySelectorAll(".nav-link, .btn-nav-cta").forEach(link => {
    link.addEventListener("click", () => {
      navMenu.classList.remove("open");
      hamburger.classList.remove("active");
      hamburger.setAttribute("aria-expanded", "false");
      document.body.style.overflow = "";
    });
  });

  // Close on outside click
  document.addEventListener("click", e => {
    if (!header.contains(e.target)) {
      navMenu.classList.remove("open");
      hamburger.classList.remove("active");
      hamburger.setAttribute("aria-expanded", "false");
      document.body.style.overflow = "";
    }
  });
}

/* ── 3. FAQ Accordion ───────────────────────────────── */
document.querySelectorAll(".faq-question").forEach(btn => {
  btn.addEventListener("click", () => {
    const item      = btn.closest(".faq-item");
    const isOpen    = item.classList.contains("open");
    // Close all
    document.querySelectorAll(".faq-item.open").forEach(el => el.classList.remove("open"));
    // Toggle current
    if (!isOpen) item.classList.add("open");
  });
  // Keyboard: Enter / Space
  btn.addEventListener("keydown", e => {
    if (e.key === "Enter" || e.key === " ") { e.preventDefault(); btn.click(); }
  });
});

/* ── 4. Scroll Reveal ───────────────────────────────── */
(function initReveal() {
  const els = document.querySelectorAll(".reveal, .reveal-left, .reveal-right");
  if (!els.length) return;

  const obs = new IntersectionObserver(entries => {
    entries.forEach(e => {
      if (e.isIntersecting) {
        e.target.classList.add("visible");
        obs.unobserve(e.target);
      }
    });
  }, { threshold: 0.12 });

  els.forEach(el => obs.observe(el));
})();

/* ── 5. Popup Modal ─────────────────────────────────── */
(function initPopup() {
  const overlay = document.getElementById("popupOverlay");
  const closeBtn = document.getElementById("popupClose");
  if (!overlay) return;

  function openPopup() {
    overlay.classList.add("active");
    document.body.style.overflow = "hidden";
    sessionStorage.setItem("kn_popup", "1");
  }
  function closePopup() {
    overlay.classList.remove("active");
    document.body.style.overflow = "";
  }

  // Show after 9s if not already shown this session
  if (!sessionStorage.getItem("kn_popup")) {
    setTimeout(openPopup, 9000);
  }

  // Exit-intent
  document.addEventListener("mouseleave", e => {
    if (e.clientY < 5 && !sessionStorage.getItem("kn_popup")) openPopup();
  });

  // Close button
  if (closeBtn) closeBtn.addEventListener("click", closePopup);

  // Click outside modal
  overlay.addEventListener("click", e => {
    if (e.target === overlay) closePopup();
  });

  // Escape key
  document.addEventListener("keydown", e => {
    if (e.key === "Escape" && overlay.classList.contains("active")) closePopup();
  });
})();

/* ── 6. Mobile Sticky CTA ───────────────────────────── */
(function initStickyCTA() {
  const cta = document.getElementById("stickyCTA");
  if (!cta) return;
  let lastScroll = 0;

  window.addEventListener("scroll", () => {
    const current = window.scrollY;
    if (current > 400) {
      cta.classList.add("visible");
    } else {
      cta.classList.remove("visible");
    }
    lastScroll = current;
  }, { passive: true });
})();

/* ── 7. Blog Search Filter ──────────────────────────── */
(function initBlogSearch() {
  const input = document.getElementById("blogSearchInput");
  const cards = document.querySelectorAll("[data-post-title]");
  if (!input || !cards.length) return;

  input.addEventListener("input", () => {
    const q = input.value.toLowerCase().trim();
    cards.forEach(card => {
      const title = card.dataset.postTitle.toLowerCase();
      card.style.display = (!q || title.includes(q)) ? "" : "none";
    });
  });
})();

/* ── 8. Category Filter ─────────────────────────────── */
document.querySelectorAll(".cat-btn").forEach(btn => {
  btn.addEventListener("click", () => {
    document.querySelectorAll(".cat-btn").forEach(b => b.classList.remove("active"));
    btn.classList.add("active");
    const cat = btn.dataset.cat;
    document.querySelectorAll("[data-category]").forEach(card => {
      card.style.display = (cat === "all" || card.dataset.category === cat) ? "" : "none";
    });
  });
});

/* ── 9. Smooth Anchor Scroll ────────────────────────── */
document.querySelectorAll('a[href^="#"]').forEach(a => {
  a.addEventListener("click", e => {
    const target = document.querySelector(a.getAttribute("href"));
    if (!target) return;
    e.preventDefault();
    const offset = (header ? header.offsetHeight : 0) + 12;
    const top = target.getBoundingClientRect().top + window.scrollY - offset;
    window.scrollTo({ top, behavior: "smooth" });
  });
});

/* ── 10. Pricing Card Highlight on Hover ────────────── */
document.querySelectorAll(".pricing-card").forEach(card => {
  card.addEventListener("mouseenter", () => card.style.zIndex = "10");
  card.addEventListener("mouseleave", () => card.style.zIndex = "");
});

/* ── 11. Current-Year Fallback ──────────────────────── */
document.querySelectorAll("#currentYear").forEach(el => {
  el.textContent = new Date().getFullYear();
});