/* =============================================
   Glory Islamic Clothing - Main Stylesheet
   Taizhou Glory Import & Export Co., Ltd.
   ============================================= */

/* --- CSS Variables --- */
:root {
  --color-navy: #0f1629;
  --color-navy-light: #1a2540;
  --color-gold: #c9a96e;
  --color-gold-light: #d4b87a;
  --color-gold-dark: #b8944a;
  --color-cream: #f8f6f3;
  --color-white: #ffffff;
  --color-offwhite: #f0ede8;
  --color-text: #2c2c2c;
  --color-text-light: #6b6b6b;
  --color-text-muted: #999999;
  --color-border: #e5e0d8;
  --color-success: #2d6a4f;
  --color-error: #c0392b;

  --font-heading: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-arabic: 'Noto Naskh Arabic', serif;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --max-width: 1200px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-navy);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.6rem); }
h4 { font-size: 1.15rem; }

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

.gold-text {
  color: var(--color-gold);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.3px;
}

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

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

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

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

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

.btn-outline-dark:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
  padding: 0 24px;
}

.header.scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 44px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-white);
  transition: color 0.3s ease;
  letter-spacing: 1px;
}

.header.scrolled .logo-text {
  color: var(--color-navy);
}

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

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  position: relative;
  padding: 4px 0;
}

.header.scrolled .nav a {
  color: var(--color-text);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-gold);
  transition: width 0.3s ease;
}

.nav a:hover { color: var(--color-gold); }
.nav a:hover::after { width: 100%; }
.nav a.active { color: var(--color-gold); }
.nav a.active::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s ease;
  border-radius: 1px;
}

.header.scrolled .hamburger span {
  background: var(--color-navy);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--color-navy) 0%, #1a2040 40%, #1a2540 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    repeating-linear-gradient(45deg, var(--color-gold) 0, var(--color-gold) 1px, transparent 0, transparent 40px);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 24px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(201, 169, 110, 0.4);
  color: var(--color-gold);
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero h1 {
  color: var(--color-white);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 20px;
  line-height: 1.1;
}

.hero p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

.scroll-indicator span {
  width: 1px;
  height: 30px;
  background: rgba(255, 255, 255, 0.2);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Sections --- */
section {
  padding: 100px 0;
}

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

/* --- Stats Bar --- */
.stats-bar {
  background: var(--color-navy);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item h3 {
  color: var(--color-gold);
  font-size: 2.2rem;
  font-family: var(--font-heading);
  margin-bottom: 4px;
}

.stat-item p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

/* --- Product Categories --- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  group: true;
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 22, 41, 0.85) 0%, rgba(15, 22, 41, 0.1) 50%, transparent 100%);
}

.category-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 32px;
  text-align: center;
}

.category-info h3 {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.category-info p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.category-info .btn {
  font-size: 0.85rem;
  padding: 10px 24px;
}

/* --- Why Choose Us --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cream);
  border-radius: 50%;
  font-size: 1.4rem;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- Process Steps --- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  width: 76%;
  height: 1px;
  background: var(--color-border);
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--color-navy);
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin: 0 auto 20px;
  border: 3px solid var(--color-cream);
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--color-gold);
}

.testimonial-card .stars {
  color: var(--color-gold);
  font-size: 1rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-card p {
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.testimonial-author {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-navy);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- CTA Section --- */
.cta-section {
  background: var(--color-navy);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

/* --- Footer --- */
.footer {
  background: var(--color-navy-light);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer h4 {
  color: var(--color-white);
  margin-bottom: 20px;
  font-size: 1rem;
  letter-spacing: 0.5px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.footer-contact .icon {
  color: var(--color-gold);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

/* --- Page Header (inner pages) --- */
.page-header {
  background: var(--color-navy);
  padding: 140px 0 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    repeating-linear-gradient(45deg, var(--color-gold) 0, var(--color-gold) 1px, transparent 0, transparent 40px);
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: 8px;
}

.page-header .breadcrumb {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

.page-header .breadcrumb a {
  color: var(--color-gold);
}

/* --- Product Page --- */
.products-section {
  padding: 80px 0;
}

.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--color-text);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.product-image {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--color-cream);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 5px 12px;
  background: var(--color-navy);
  color: var(--color-gold);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 3px;
  letter-spacing: 0.5px;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  line-height: 1.4;
}

.product-info .category-tag {
  font-size: 0.8rem;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.product-info .price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.product-info .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.85rem;
  padding: 10px;
}

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

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

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.value-card .icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.value-card h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.value-card p {
  color: var(--color-text-light);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* --- Custom Design Page --- */
.service-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.service-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

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

.service-text h2 {
  margin-bottom: 16px;
}

.service-text p {
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}

.service-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.highlight-item .check {
  color: var(--color-gold);
  font-weight: 700;
  font-size: 1.1rem;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
}

.contact-detail-item .detail-icon {
  width: 48px;
  height: 48px;
  background: var(--color-cream);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.contact-detail-item h4 {
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.contact-detail-item p {
  color: var(--color-text-light);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-navy);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color 0.3s ease;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* --- Inquiry Form Card --- */
.inquiry-card {
  background: var(--color-cream);
  padding: 40px;
  border-radius: var(--radius-lg);
}

.inquiry-card h3 {
  margin-bottom: 24px;
  text-align: center;
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-navy);
}

.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.faq-item.active .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-top: 12px;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--color-navy);
  color: var(--color-gold);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-gold);
  color: var(--color-navy);
  transform: translateY(-3px);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro,
  .service-intro { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 24px;
    transition: right 0.4s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav.active { right: 0; }
  .nav a { color: var(--color-navy) !important; }

  .categories-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }

  .service-highlights { grid-template-columns: 1fr; }

  section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .product-filter { gap: 8px; }
  .filter-btn { padding: 8px 16px; font-size: 0.8rem; }
}