/* ============================================
   PrimePep Bio — Orange & Black on Light
   Completely unique design system
   ============================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --orange: #D97736;
  --orange-dark: #BF6530;
  --orange-light: #F0D5BC;
  --orange-pale: #FBF5EE;
  --black: #1E1E1E;
  --black-soft: #2A2A2A;
  --gray-900: #252525;
  --gray-800: #333333;
  --gray-700: #4A4A4A;
  --gray-600: #636363;
  --gray-500: #808080;
  --gray-400: #ABABAB;
  --gray-300: #D0D0D0;
  --gray-200: #E8E8E8;
  --gray-100: #F3F3F3;
  --gray-50: #F9F9F9;
  --white: #FFFFFF;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-orange: 0 6px 24px rgba(217,119,54,0.18);
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.text-orange { color: var(--orange); }
.text-dark { color: var(--black); }
.text-gradient {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}
.btn svg { width: 20px; height: 20px; flex-shrink: 0; }
.btn-sm { padding: 8px 20px; font-size: 0.875rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  background: var(--orange-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(217,119,54,0.22);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover {
  background: var(--gray-800);
  transform: translateY(-2px);
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.35s ease;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
  padding: 10px 0;
}
.navbar.scrolled .logo { color: var(--black); }
.navbar.scrolled .nav-links a { color: var(--gray-700); }
.navbar.scrolled .nav-links a:hover { color: var(--orange); }
.navbar.scrolled .nav-toggle span { background: var(--black); }

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: color 0.3s;
}
.logo-icon { width: 38px; height: 38px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  transition: color 0.25s;
}
.nav-links a:hover { color: var(--orange); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.nav-overlay.active {
  display: block;
  opacity: 1;
}
/* Close button inside mobile menu */
.nav-close {
  display: none;
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  background: var(--gray-100);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--gray-700);
  transition: all 0.2s;
  padding: 0;
}
.nav-close svg { width: 18px; height: 18px; }
.nav-close:hover { background: var(--gray-200); color: var(--black); }

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #1E1E1E 0%, #2A2218 40%, #252525 100%);
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg-elements {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hex {
  position: absolute;
  border-radius: 50%;
  opacity: 0.04;
}
.hex-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--orange) 0%, transparent 70%);
  top: -15%;
  right: -10%;
  animation: float 12s ease-in-out infinite;
}
.hex-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--orange) 0%, transparent 70%);
  bottom: -10%;
  left: -5%;
  animation: float 15s ease-in-out infinite reverse;
}
.hex-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--orange-light) 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation: float 10s ease-in-out infinite 3s;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--orange);
  opacity: 0.25;
}
.p1 { top: 20%; left: 15%; animation: sparkle 4s ease-in-out infinite; }
.p2 { top: 60%; right: 20%; animation: sparkle 5s ease-in-out infinite 1s; }
.p3 { top: 35%; right: 35%; animation: sparkle 3.5s ease-in-out infinite 0.5s; }
.p4 { bottom: 25%; left: 25%; animation: sparkle 4.5s ease-in-out infinite 2s; }
.p5 { top: 15%; right: 10%; animation: sparkle 6s ease-in-out infinite 1.5s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.05); }
}
@keyframes sparkle {
  0%, 100% { opacity: 0.15; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(1.5); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(217,119,54,0.08);
  border: 1px solid rgba(217,119,54,0.18);
  border-radius: 100px;
  color: var(--orange-light);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.65);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  color: var(--orange-light);
  line-height: 1;
}
.stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  margin-top: 6px;
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.12);
}

/* ---- Sections ---- */
.section {
  padding: 100px 0;
}
.section-light { background: var(--gray-50); }
.section-dark { background: var(--black); }
.section-accent { background: var(--gray-50); }

.section-tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(217,119,54,0.07);
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 100px;
  margin-bottom: 16px;
}
.tag-light {
  background: rgba(217,119,54,0.1);
  color: var(--orange-light);
}
.tag-dark {
  background: rgba(217,119,54,0.07);
  color: var(--orange);
}

.section-header { margin-bottom: 56px; }
.section-header.center { text-align: center; }
.section-header h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  letter-spacing: -0.02em;
}
.section-dark .section-header h2 { color: var(--white); }
.section-accent .section-header h2 { color: var(--black); }
.section-desc {
  color: var(--gray-400);
  max-width: 560px;
  margin: 16px auto 0;
  font-size: 1.05rem;
}

/* ---- Grids ---- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ---- About ---- */
.about-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange-light), var(--orange));
}
.molecule-svg {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  display: block;
  animation: rotateMolecule 20s linear infinite;
}
@keyframes rotateMolecule {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.about-card-label {
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-400);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 20px;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.feature-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--orange-pale);
  border-radius: var(--radius-sm);
  color: var(--orange);
}
.feature-icon svg { width: 22px; height: 22px; }
.about-feature strong {
  display: block;
  font-size: 0.95rem;
  color: var(--black);
}
.about-feature span {
  font-size: 0.82rem;
  color: var(--gray-500);
}

/* ---- Solution Cards ---- */
.solution-card {
  background: var(--gray-800);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.solution-card:hover {
  transform: translateY(-4px);
  border-color: rgba(217,119,54,0.25);
  box-shadow: 0 12px 36px rgba(0,0,0,0.2);
}
.solution-card.featured {
  border-color: rgba(217,119,54,0.35);
  background: linear-gradient(170deg, rgba(217,119,54,0.06), var(--gray-800) 40%);
}
.solution-badge {
  position: absolute;
  top: -1px;
  right: 24px;
  background: var(--orange);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.solution-icon { margin-bottom: 20px; }
.solution-icon svg { width: 52px; height: 52px; }
.solution-card h3 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 12px;
}
.solution-card p {
  color: var(--gray-400);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}
.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}
.solution-tags li {
  padding: 4px 12px;
  background: rgba(217,119,54,0.06);
  color: var(--orange-light);
  font-size: 0.76rem;
  font-weight: 500;
  border-radius: 100px;
  border: 1px solid rgba(217,119,54,0.12);
}

/* ---- Process / Science ---- */
.process-grid {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 56px;
}
.process-step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
}
.process-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--orange);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 16px;
}
.process-step h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.process-step p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.7;
}
.process-connector {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange-light), var(--orange));
  margin-top: 20px;
  flex-shrink: 0;
  border-radius: 2px;
}

.science-banner {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--orange);
}
.science-banner-content { flex: 1; }
.science-banner h3 { margin-bottom: 12px; font-size: 1.3rem; }
.science-banner p { color: var(--gray-600); font-size: 0.95rem; }
.science-banner-visual svg {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
}

/* ---- Advantages ---- */
.advantage-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
  position: relative;
}
.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange-light), var(--orange));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity 0.3s;
}
.advantage-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(217,119,54,0.2);
}
.advantage-card:hover::before {
  opacity: 1;
}
.advantage-num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--orange);
  opacity: 0.2;
  margin-bottom: 16px;
}
.advantage-card h4 {
  color: var(--black);
  font-size: 1.05rem;
  margin-bottom: 10px;
}
.advantage-card p {
  color: var(--gray-600);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---- CTA ---- */
.cta-box {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--black);
  border-radius: var(--radius-xl);
  padding: 64px;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(217,119,54,0.08), transparent 70%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 2; flex: 1; }
.cta-content h2 {
  color: var(--white);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}
.cta-content p {
  color: var(--gray-400);
  font-size: 1.05rem;
  margin-bottom: 28px;
  max-width: 500px;
}
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.cta-visual {
  position: relative;
  width: 200px;
  height: 200px;
  flex-shrink: 0;
}
.dna-helix {
  width: 100%;
  height: 100%;
  position: relative;
}
.strand {
  position: absolute;
  width: 120px;
  height: 120px;
  border: 3px solid var(--orange);
  border-radius: 50%;
  opacity: 0.2;
}
.strand-1 {
  top: 10%;
  left: 10%;
  animation: dna1 6s ease-in-out infinite;
}
.strand-2 {
  bottom: 10%;
  right: 10%;
  animation: dna2 6s ease-in-out infinite;
}
@keyframes dna1 {
  0%, 100% { transform: rotate(0deg) scale(1); opacity: 0.2; }
  50% { transform: rotate(180deg) scale(1.2); opacity: 0.4; }
}
@keyframes dna2 {
  0%, 100% { transform: rotate(180deg) scale(1.2); opacity: 0.4; }
  50% { transform: rotate(0deg) scale(1); opacity: 0.2; }
}

/* ---- Footer ---- */
.footer {
  background: var(--black);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.logo-footer { color: var(--white); }
.footer-brand p {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 280px;
}
.footer-links h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-links a {
  display: block;
  color: var(--gray-500);
  text-decoration: none;
  font-size: 0.88rem;
  margin-bottom: 12px;
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--orange); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}
.footer-bottom p {
  color: var(--gray-600);
  font-size: 0.82rem;
}

/* ---- Floating WhatsApp ---- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 16px rgba(37,211,102,0.3);
  transition: all 0.3s ease;
  text-decoration: none;
}
.whatsapp-float svg { width: 28px; height: 28px; }
.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 22px rgba(37,211,102,0.4);
}
.whatsapp-tooltip {
  position: absolute;
  right: 72px;
  background: var(--black);
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -6px;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--black);
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; }

/* ---- Animations ---- */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-animate="fade-right"] { transform: translateX(-30px); }
[data-animate="fade-left"] { transform: translateX(30px); }
[data-animate].visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-close { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 0;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
  }
  .nav-links.open { right: 0; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    color: var(--gray-700) !important;
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 1rem;
  }
  .nav-links a:hover { color: var(--orange) !important; }
  .nav-links .btn-sm {
    margin-top: 16px;
    text-align: center;
    justify-content: center;
    border: none;
    padding: 14px 0;
    color: var(--white) !important;
  }

  .hero { padding: 100px 0 60px; }
  .hero h1 { font-size: 2.2rem; }

  .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }

  .process-grid {
    flex-direction: column;
    gap: 32px;
    align-items: center;
  }
  .process-connector {
    width: 2px;
    height: 40px;
    margin: 0;
  }
  .process-step { padding: 0; }

  .science-banner { flex-direction: column; padding: 32px; }
  .science-banner-visual svg { width: 80px; height: 80px; }

  .cta-box {
    flex-direction: column;
    padding: 40px 28px;
    text-align: center;
  }
  .cta-actions { justify-content: center; }
  .cta-visual { display: none; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .hero-stats { gap: 24px; }
  .stat-divider { display: none; }

  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .products-grid { grid-template-columns: 1fr !important; }
}

/* ============================================
   Products Page Styles
   ============================================ */
.page-hero {
  background: linear-gradient(160deg, #1E1E1E 0%, #2A2218 50%, #252525 100%);
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(217,119,54,0.05), transparent 70%);
  top: -20%;
  right: -10%;
  pointer-events: none;
}
.page-hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}
.page-hero p {
  color: rgba(255,255,255,0.55);
  font-size: 1.1rem;
  max-width: 550px;
  margin: 0 auto;
}

/* Filter tabs */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 32px 0;
  flex-wrap: wrap;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}
.filter-btn {
  padding: 8px 22px;
  border: 2px solid var(--gray-200);
  background: var(--white);
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.25s;
}
.filter-btn:hover { border-color: var(--orange); color: var(--orange); }
.filter-btn.active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

/* Products grid */
.products-section { padding: 56px 0 100px; background: var(--gray-50); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Product card */
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--gray-200);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217,119,54,0.4);
}
.product-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.product-type-badge {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-peptide { background: rgba(217,119,54,0.08); color: var(--orange); }
.badge-tablet { background: rgba(99,102,241,0.07); color: #7C7FF2; }
.badge-serum { background: rgba(16,185,129,0.07); color: #34B88A; }

.product-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.product-card .product-tagline {
  color: var(--orange);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.product-card .product-desc {
  color: var(--gray-500);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}
.product-card .btn-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--orange);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-body);
  transition: gap 0.25s;
}
.btn-read-more:hover { gap: 10px; }
.btn-read-more svg { width: 16px; height: 16px; transition: transform 0.25s; }
.btn-read-more:hover svg { transform: translateX(3px); }

/* Product Modal */
.product-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.product-modal.active {
  display: flex;
}
.modal-content {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header {
  padding: 36px 36px 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.modal-header h2 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}
.modal-header .product-tagline {
  color: var(--orange);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
}
.modal-close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--gray-100);
  color: var(--gray-600);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}
.modal-close:hover { background: var(--gray-200); color: var(--black); }
.modal-close svg { width: 18px; height: 18px; }
.modal-body {
  padding: 24px 36px 36px;
}
.modal-body h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
  color: var(--black);
}
.modal-body h3:first-child { margin-top: 0; }
.modal-body p {
  color: var(--gray-600);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 12px;
}
.modal-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}
.modal-body ul li {
  position: relative;
  padding-left: 20px;
  color: var(--gray-600);
  font-size: 0.9rem;
  line-height: 1.8;
}
.modal-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  opacity: 0.5;
}
.modal-body .research-note {
  background: var(--orange-pale);
  border-left: 4px solid var(--orange);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 20px;
}
.modal-body .research-note p {
  color: var(--gray-700);
  font-size: 0.88rem;
  margin: 0;
}

@media (max-width: 768px) {
  .products-grid { grid-template-columns: 1fr; }
  .modal-content { max-height: 90vh; border-radius: var(--radius-lg); }
  .modal-header { padding: 24px 24px 0; }
  .modal-body { padding: 20px 24px 28px; }
  .modal-header h2 { font-size: 1.3rem; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}