/* ========================================
   DELIN - PREMIUM RENOVATIONS
   Design System based on Module 03
   ======================================== */

/* === CSS RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors (from Module 03) */
  --color-primary: #1A4D2E;        /* Dark green */
  --color-primary-light: #2E7D4E;
  --color-primary-dark: #0D3320;
  --color-secondary: #C9A961;      /* Gold/beige */
  --color-secondary-light: #E5C98A;
  --color-accent: #D4AF37;         /* Gold accent */

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-600: #4B5563;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* Typography - OUTFIT (modern geometric) */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Outfit', sans-serif;

  /* Font Sizes (responsive) */
  --font-size-h1: clamp(36px, 6vw, 56px);
  --font-size-h2: clamp(28px, 4vw, 42px);
  --font-size-h3: clamp(22px, 3vw, 32px);
  --font-size-body: 16px;
  --font-size-small: 14px;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --spacing-2xl: 96px;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-gray-800);
  background: var(--color-white);
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: 700; /* Bold */
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: 600; /* SemiBold */
}

h3 {
  font-size: var(--font-size-h3);
  font-weight: 600; /* SemiBold */
}

p {
  margin-bottom: var(--spacing-sm);
}

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

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

/* === LAYOUT UTILITIES === */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.section-lg {
  padding: var(--spacing-2xl) 0;
}

/* === HEADER (STICKY) === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--color-white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  z-index: 1000;
  transition: var(--transition);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800; /* ExtraBold for OUTFIT */
  color: var(--color-primary);
  letter-spacing: 0.5px; /* Slightly wider for modern feel */
}

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

.nav-link {
  color: var(--color-gray-800);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--color-gray-100);
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--color-primary);
}

/* === HERO SECTION === */
.hero {
  margin-top: 80px; /* Account for fixed header */
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

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

.hero-content h1 {
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-lg);
}

.cta-group {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  font-size: 16px;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26, 77, 46, 0.3);
}

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

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

/* Trust Badges - Enhanced (4 guarantees like Nilen) */
.trust-badges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.trust-badge-icon {
  font-size: 24px;
}

.trust-badge-text {
  flex: 1;
}

.trust-badge-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-gray-900);
  margin-bottom: 2px;
}

.trust-badge-desc {
  font-size: 12px;
  color: var(--color-gray-600);
}

.hero-image {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* === SOCIAL PROOF (Quick Reviews) === */
.social-proof {
  background: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.review-card {
  background: var(--color-gray-50);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.review-stars {
  color: var(--color-accent);
  font-size: 18px;
  margin-bottom: var(--spacing-sm);
}

.review-text {
  font-style: italic;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.review-author {
  font-weight: 600;
  color: var(--color-gray-900);
}

.review-role {
  font-size: var(--font-size-small);
  color: var(--color-gray-600);
}

/* === PROBLEM SECTION === */
.problem {
  background: var(--color-gray-50);
  padding: var(--spacing-xl) 0;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.problem-box {
  background: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
}

.problem-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
}

.problem-title {
  font-weight: 700;
  font-size: 18px;
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-900);
}

.problem-desc {
  color: var(--color-gray-600);
  font-size: 15px;
  line-height: 1.6;
}

/* === SOLUTION (Process) === */
.solution {
  padding: var(--spacing-xl) 0;
  background: var(--color-white);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.process-step {
  text-align: center;
  padding: var(--spacing-md);
}

.process-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

.process-number {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  line-height: 40px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.process-title {
  font-weight: 700;
  font-size: 18px;
  margin-bottom: var(--spacing-xs);
}

.process-desc {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.5;
}

.process-duration {
  font-size: 12px;
  color: var(--color-gray-500);
  margin-top: var(--spacing-xs);
  font-style: italic;
}

/* === MATERIALS CATALOG (with 4 price tiers) === */
.materials-catalog {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
}

.materials-catalog .section-title,
.materials-catalog .section-subtitle {
  color: var(--color-white);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

/* Individual category card */
.catalog-category {
  background: var(--color-white);
  color: var(--color-gray-800);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.catalog-category:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* Category that spans full width (for the table) */
.catalog-category-wide {
  grid-column: 1 / -1;
}

/* Category header */
.catalog-category-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-gray-200);
}

.catalog-icon {
  font-size: 48px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.catalog-category-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.catalog-category-desc {
  font-size: 14px;
  color: var(--color-gray-600);
}

/* Price levels container */
.catalog-levels {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Individual price level */
.catalog-level {
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-gray-300);
  transition: var(--transition);
  position: relative;
}

.catalog-level:hover {
  background: var(--color-gray-100);
  border-left-color: var(--color-primary);
}

/* Popular level (Premium) */
.catalog-level-popular {
  background: linear-gradient(135deg, #f0f9f4 0%, #e6f4ed 100%);
  border-left-color: var(--color-primary);
  border-left-width: 5px;
}

.catalog-level-badge {
  position: absolute;
  top: -8px;
  right: var(--spacing-sm);
  background: var(--color-accent);
  color: var(--color-white);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.catalog-level-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 6px;
}

.catalog-level-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.catalog-level-price span {
  font-size: 14px;
  color: var(--color-gray-600);
  font-weight: 400;
}

.catalog-level-desc {
  font-size: 13px;
  color: var(--color-gray-600);
  line-height: 1.5;
}

/* Catalog table (for "All Materials") */
.catalog-table {
  margin-top: var(--spacing-md);
  overflow-x: auto;
}

.catalog-table table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
}

.catalog-table thead {
  background: var(--color-primary);
  color: var(--color-white);
}

.catalog-table th {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.catalog-table th:first-child {
  border-top-left-radius: var(--border-radius);
}

.catalog-table th:last-child {
  border-top-right-radius: var(--border-radius);
}

.catalog-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-gray-200);
  font-size: 14px;
  color: var(--color-gray-700);
}

.catalog-table tbody tr:hover {
  background: var(--color-gray-50);
}

.catalog-table tbody tr:last-child td {
  border-bottom: none;
}

/* Pricing grid with 4 level cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.pricing-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
  position: relative;
  border: 2px solid var(--color-gray-200);
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: var(--color-primary);
}

.pricing-card-popular {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, #fffbf5 0%, #fff9f0 100%);
  transform: scale(1.05);
}

.pricing-card-popular:hover {
  transform: translateY(-4px) scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-white);
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-level {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

.pricing-price {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xs);
  line-height: 1.2;
}

.pricing-meta {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-gray-600);
  margin-top: 4px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--color-gray-700);
  line-height: 1.5;
}

/* Categories list */
.categories-info {
  margin-top: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
}

.categories-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.categories-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.category-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  color: var(--color-gray-800);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}

.category-item:hover {
  transform: translateX(4px);
  background: var(--color-gray-50);
}

.category-icon {
  font-size: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.category-item small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-gray-600);
  margin-top: 2px;
}

/* === PORTFOLIO (Teaser) === */
.portfolio {
  padding: var(--spacing-xl) 0;
  background: var(--color-gray-50);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.portfolio-card {
  background: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.portfolio-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.portfolio-content {
  padding: var(--spacing-md);
}

.portfolio-meta {
  font-size: var(--font-size-small);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xs);
}

.portfolio-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.portfolio-stats {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-gray-600);
  margin-top: var(--spacing-sm);
}

/* === USP (Why Us) === */
.usp {
  padding: var(--spacing-xl) 0;
  background: var(--color-white);
}

.usp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.usp-item {
  display: flex;
  gap: var(--spacing-md);
}

.usp-icon {
  font-size: 40px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.usp-content h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-xs);
}

.usp-content p {
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* === FAQ (Accordion) === */
.faq {
  padding: var(--spacing-xl) 0;
  background: var(--color-gray-50);
}

.faq-list {
  max-width: 800px;
  margin: var(--spacing-lg) auto 0;
}

.faq-item {
  background: var(--color-white);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--spacing-md);
  background: var(--color-white);
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-900);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--color-gray-50);
}

.faq-icon {
  font-size: 20px;
  transition: var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-gray-600);
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* === MULTI-OPTION CONTACT (NEW!) === */
.contact-options {
  padding: var(--spacing-xl) 0;
  background: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.contact-option {
  background: var(--color-gray-50);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
  border: 2px solid transparent;
  transition: var(--transition);
}

.contact-option:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(26, 77, 46, 0.15);
}

.contact-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

.contact-option h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-xs);
}

.contact-option p {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
  font-size: 14px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-gray-700);
}

.form-input,
.form-textarea {
  padding: 12px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 77, 46, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* === CTA SECTION === */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.cta-section h2,
.cta-section p {
  color: var(--color-white);
}

.cta-section .btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
  margin-top: var(--spacing-md);
}

.cta-section .btn-primary:hover {
  background: var(--color-gray-100);
  transform: scale(1.05);
}

/* === FOOTER === */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-column h3 {
  color: var(--color-white);
  font-size: 18px;
  margin-bottom: var(--spacing-sm);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--spacing-xs);
}

.footer-column a {
  color: var(--color-gray-300);
}

.footer-column a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-small);
  color: var(--color-gray-500);
}

/* === RESPONSIVE (Mobile-First) === */
@media (max-width: 768px) {
  /* Header Mobile */
  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: left 0.3s ease;
  }

  .nav.active {
    left: 0;
  }

  .menu-toggle {
    display: block;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-sm);
  }

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .hero-image {
    order: -1;
  }

  .cta-group {
    flex-direction: column;
  }

  .trust-badges {
    grid-template-columns: 1fr;
  }

  /* Reviews */
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  /* Problem */
  .problem-grid {
    grid-template-columns: 1fr;
  }

  /* Process */
  .process-grid {
    grid-template-columns: 1fr;
  }

  /* Materials Catalog */
  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .catalog-table {
    font-size: 12px;
  }

  .catalog-table th,
  .catalog-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  /* Pricing Grid - Materials Catalog */
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .pricing-card {
    padding: var(--spacing-md);
  }

  .pricing-card-popular {
    transform: scale(1);
  }

  .pricing-level {
    font-size: 24px;
  }

  .pricing-desc {
    font-size: 13px;
  }

  .pricing-badge {
    font-size: 12px;
    padding: 6px 12px;
  }

  /* Categories List */
  .categories-list {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .category-item {
    padding: var(--spacing-sm);
    font-size: 14px;
  }

  .category-icon {
    font-size: 20px;
  }

  .materials-catalog {
    overflow-x: hidden;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  /* USP */
  .usp-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* === UTILITIES === */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  font-size: 18px;
  color: var(--color-gray-600);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}