/* ===================================
   Ignite Peptides — Catalog Site
   Brand Colors & Design System
   =================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Lato:wght@300;400;600;700;900&display=swap');

/* CSS Custom Properties */
:root {
  /* Brand Colors */
  --primary: #7D0600;
  --primary-dark: #5C0400;
  --primary-light: #9A1A12;
  --secondary: #F5F2E9;
  --secondary-dark: #E8E4D8;
  --white: #FFFFFF;
  --black: #000000;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --border: #E0E0E0;
  --border-light: #F0F0F0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 60px rgba(0, 0, 0, 0.16);

  /* Typography */
  --font-family: 'Lato', sans-serif;

  /* Spacing */
  --container-max: 1280px;
  --container-padding: 24px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 50px;
  --radius-round: 50%;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset */
*,
*::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-family);
  color: var(--text-primary);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

ul,
ol {
  list-style: none;
}

/* ===================================
   TOP BANNER
   =================================== */
.top-banner {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary) 100%);
  background-size: 200% 100%;
  animation: bannerShimmer 6s ease infinite;
  color: var(--white);
  text-align: center;
  padding: 12px var(--container-padding);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 1000;
}

@keyframes bannerShimmer {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

.top-banner .banner-icon {
  margin-right: 8px;
  font-size: 1rem;
}

.top-banner .promo-code {
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 2px;
  font-size: 0.9rem;
  margin: 0 2px;
}

.top-banner .banner-link {
  color: var(--white);
  text-decoration: underline;
  margin-left: 12px;
  font-weight: 700;
  transition: opacity var(--transition-fast);
}

.top-banner .banner-link:hover {
  opacity: 0.85;
}

/* ===================================
   PROMO BANNER (BOGO)
   =================================== */
.promo-banner {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d0200 40%, var(--primary) 100%);
  padding: 72px var(--container-padding);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.promo-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
  animation: promoGlow 8s ease infinite;
  pointer-events: none;
}

@keyframes promoGlow {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(5%, 5%);
  }
}

.promo-banner-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.promo-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  color: #FFD700;
  padding: 6px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 215, 0, 0.3);
  animation: promoPulse 2s ease-in-out infinite;
}

@keyframes promoPulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.2);
  }

  50% {
    box-shadow: 0 0 20px 4px rgba(255, 215, 0, 0.15);
  }
}

.promo-banner h2 {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.promo-banner h2 span {
  color: #FFD700;
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.promo-banner p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: 32px;
}

.promo-code-lg {
  background: rgba(255, 255, 255, 0.15);
  color: #FFD700;
  padding: 4px 16px;
  border-radius: 6px;
  letter-spacing: 3px;
  font-size: 1.2rem;
  border: 1px solid rgba(255, 215, 0, 0.3);
}

.promo-cta {
  font-size: 1.1rem;
  padding: 20px 48px;
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  color: #1a1a1a !important;
  border-color: #FFD700;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.promo-cta:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 32px rgba(255, 215, 0, 0.4) !important;
  background: linear-gradient(135deg, #FFE44D 0%, #FFB733 100%) !important;
  border-color: #FFE44D !important;
}

/* ===================================
   RUO ACCOUNT NOTICE
   =================================== */
.ruo-notice {
  background: var(--secondary);
  color: var(--text-secondary);
  text-align: center;
  padding: 12px var(--container-padding);
  font-size: 0.82rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--secondary-dark);
  letter-spacing: 0.2px;
}

.ruo-notice strong {
  color: var(--primary);
  font-weight: 700;
}

/* ===================================
   HEADER / NAVIGATION
   ===================================*/
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 999;
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo img {
  height: 50px;
  width: auto;
  border-radius: 6px;
}

.header-logo-text {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
  position: relative;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-base);
}

.header-nav a:hover {
  color: var(--primary);
}

.header-nav a:hover::after {
  width: 100%;
}

.header-nav a.active {
  color: var(--primary);
}

.header-nav a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: all var(--transition-base);
  border: 2px solid var(--primary);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translateY(10px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-10px);
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(125, 6, 0, 0.3);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--text-primary);
  border-color: var(--secondary-dark);
}

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

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(125, 6, 0, 0.3);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 18px 44px;
  font-size: 1.05rem;
}

.btn-icon {
  font-size: 1.1em;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--white) 50%, var(--secondary) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(125, 6, 0, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(125, 6, 0, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

/* Animated molecule dots */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.08;
  animation: float 20s infinite;
}

.particle:nth-child(1) {
  top: 15%;
  left: 10%;
  animation-delay: 0s;
  animation-duration: 18s;
}

.particle:nth-child(2) {
  top: 25%;
  left: 85%;
  animation-delay: 2s;
  animation-duration: 22s;
}

.particle:nth-child(3) {
  top: 60%;
  left: 20%;
  animation-delay: 4s;
  animation-duration: 16s;
}

.particle:nth-child(4) {
  top: 70%;
  left: 75%;
  animation-delay: 6s;
  animation-duration: 24s;
}

.particle:nth-child(5) {
  top: 40%;
  left: 50%;
  animation-delay: 8s;
  animation-duration: 20s;
}

.particle:nth-child(6) {
  top: 80%;
  left: 40%;
  animation-delay: 10s;
  animation-duration: 19s;
}

.particle:nth-child(7) {
  top: 10%;
  left: 60%;
  animation-delay: 1s;
  animation-duration: 21s;
}

.particle:nth-child(8) {
  top: 50%;
  left: 90%;
  animation-delay: 3s;
  animation-duration: 17s;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.08;
  }

  25% {
    transform: translate(30px, -40px) scale(1.5);
    opacity: 0.12;
  }

  50% {
    transform: translate(-20px, 30px) scale(0.8);
    opacity: 0.06;
  }

  75% {
    transform: translate(40px, 20px) scale(1.2);
    opacity: 0.1;
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 40px var(--container-padding);
}

.hero-logo {
  width: auto;
  height: auto;
  max-width: 280px;
  border-radius: var(--radius-lg);
  margin: 0 auto 32px;
  box-shadow: var(--shadow-lg);
  animation: logoFadeIn 1s ease forwards;
}

@keyframes logoFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hero-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  padding: 6px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
  animation: badgeFadeIn 1s 0.2s ease forwards;
  opacity: 0;
}

@keyframes badgeFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 20px;
  animation: heroTitleIn 1s 0.3s ease forwards;
  opacity: 0;
}

@keyframes heroTitleIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 span {
  color: var(--primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
  animation: heroSubIn 1s 0.5s ease forwards;
  opacity: 0;
}

@keyframes heroSubIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: heroActionsIn 1s 0.7s ease forwards;
  opacity: 0;
}

@keyframes heroActionsIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   FEATURED SECTION
   =================================== */
.featured-section {
  padding: 100px var(--container-padding);
  background: var(--white);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.features-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 48px 32px;
  background: var(--secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-round);
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===================================
   PRODUCT GRID (CATALOG)
   =================================== */
.catalog-section {
  padding: 80px var(--container-padding);
  background: var(--secondary);
  min-height: 60vh;
}

.catalog-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Search & Filter Bar */
.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 16px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  border: 2px solid var(--border);
  border-radius: var(--radius-pill);
  font-family: var(--font-family);
  font-size: 0.95rem;
  background: var(--white);
  transition: all var(--transition-base);
  outline: none;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(125, 6, 0, 0.1);
}

.search-box .search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 1.1rem;
}

.product-count {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
}

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

.product-card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card-image img {
  transform: scale(1.05);
}

.product-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-card-name a {
  transition: color var(--transition-fast);
}

.product-card-name a:hover {
  color: var(--primary);
}

.product-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}

.product-price {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.product-card-footer .btn {
  padding: 10px 20px;
  font-size: 0.78rem;
  white-space: nowrap;
}

/* ===================================
   SINGLE PRODUCT PAGE
   =================================== */
.product-detail-section {
  padding: 60px var(--container-padding);
  background: var(--white);
}

.product-detail-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 40px;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .sep {
  color: var(--border);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-detail-image {
  background: var(--secondary);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
}

.product-detail-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.product-detail-info {
  padding-top: 20px;
}

.product-detail-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.product-detail-name {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.product-detail-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.product-detail-price {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 32px;
}

.product-detail-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.product-detail-meta {
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.product-detail-meta h4 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 12px;
}

.product-detail-meta p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================
   RUO BANNER
   =================================== */
.ruo-banner {
  background: var(--secondary);
  padding: 40px var(--container-padding);
  text-align: center;
  border-top: 1px solid var(--border-light);
}

.ruo-banner-inner {
  max-width: 800px;
  margin: 0 auto;
}

.ruo-banner .ruo-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.ruo-banner h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.ruo-banner p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===================================
   FOOTER
   =================================== */
.site-footer {
  background: var(--text-primary);
  color: var(--white);
  padding: 60px var(--container-padding) 30px;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  max-width: 360px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
}

.footer-brand .footer-logo span {
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.9);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-ruo {
  background: rgba(125, 6, 0, 0.15);
  border: 1px solid rgba(125, 6, 0, 0.3);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-top: 32px;
}

.footer-ruo p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  text-align: center;
}

.footer-ruo strong {
  color: #FF6B5A;
}

/* ===================================
   BACK TO TOP
   =================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-round);
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  border: none;
  box-shadow: var(--shadow-md);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ===================================
   NO RESULTS
   =================================== */
.no-results {
  text-align: center;
  padding: 80px 20px;
  grid-column: 1 / -1;
}

.no-results .no-results-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.no-results h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.no-results p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===================================
   ANIMATIONS
   =================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .hero h1 {
    font-size: 2.6rem;
  }

  .product-detail-grid {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 100px 32px 32px;
    gap: 24px;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 1001;
  }

  .header-nav.open {
    right: 0;
  }

  .mobile-menu-toggle {
    display: flex;
    z-index: 1002;
  }

  .mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
  }

  .mobile-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .hero {
    min-height: 70vh;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-logo {
    width: 90px;
    height: 90px;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .product-card-body {
    padding: 16px;
  }

  .product-card-name {
    font-size: 0.95rem;
  }

  .product-card-desc {
    font-size: 0.82rem;
    margin-bottom: 12px;
  }

  .product-card-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .product-card-footer .btn {
    width: 100%;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .catalog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: 100%;
  }

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

  .product-detail-name {
    font-size: 1.8rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  .featured-section {
    padding: 60px var(--container-padding);
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .top-banner {
    font-size: 0.75rem;
    padding: 8px 16px;
  }

  .header-inner {
    height: 64px;
  }

  .header-logo img {
    height: 40px;
  }

  .header-logo-text {
    font-size: 1.15rem;
  }
}