/* ==========================================================================
   CAT Denver Logistics - Enterprise Heavy Machinery & Logistics Styling
   ========================================================================== */

:root {
  --primary-color: #f59e0b;
  --secondary-color: #111827;
  --accent-color: #d97706;
  --bg-dark: #0b0f19;
  --surface-dark: #151d2e;
  --surface-card: #1c2638;
  --surface-border: #2d3748;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --success: #10b981;
  --danger: #ef4444;
  --info: #3b82f6;
  --warning: #f59e0b;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.25;
}

.text-primary { color: var(--primary-color) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-center { text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #111827;
  border-color: var(--primary-color);
}
.btn-primary:hover {
  background-color: #d97706;
  border-color: #d97706;
  color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(245, 158, 11, 0.35);
}

.btn-secondary {
  background-color: #1f2937;
  color: #ffffff;
  border-color: #374151;
}
.btn-secondary:hover {
  background-color: #374151;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}
.btn-outline:hover {
  background-color: var(--primary-color);
  color: #111827;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header & Navigation (Exactly 5 sections + Quote Button)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid #1f2937;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.header-top {
  background-color: #0b0f19;
  border-bottom: 1px solid #1f2937;
  padding: 6px 0;
  font-size: 12px;
  color: var(--text-muted);
}
.header-top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-info {
  display: flex;
  gap: 20px;
}
.top-info a:hover {
  color: var(--primary-color);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo {
  height: 52px;
  width: auto;
  max-width: 190px;
  object-fit: contain;
  vertical-align: middle;
  transition: transform var(--transition-fast);
}
.brand-logo:hover {
  transform: scale(1.02);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  color: #e5e7eb;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 4px;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.25s ease;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary-color);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-cta .btn-quote-header {
  background-color: var(--primary-color);
  color: #000;
  font-weight: 800;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
}
.header-cta .btn-quote-header:hover {
  background-color: #d97706;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.4);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 600px;
  padding: 100px 0 80px;
  background: radial-gradient(circle at 75% 30%, rgba(245, 158, 11, 0.12) 0%, rgba(11, 15, 25, 0.98) 60%), #0b0f19;
  border-bottom: 3px solid var(--primary-color);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero-title {
  font-size: 48px;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-title span {
  color: var(--primary-color);
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 35px;
  max-width: 580px;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-image-wrapper {
  position: relative;
}
.hero-image-wrapper img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--surface-border);
}

/* ==========================================================================
   Stats Bar
   ========================================================================== */
.stats-bar {
  background-color: var(--surface-dark);
  padding: 40px 0;
  border-bottom: 1px solid var(--surface-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item {
  padding: 10px;
  border-right: 1px solid var(--surface-border);
}
.stat-item:last-child {
  border-right: none;
}
.stat-number {
  font-family: var(--font-heading);
  font-size: 38px;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 5px;
}
.stat-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  padding: 80px 0;
}
.section-header {
  margin-bottom: 50px;
}
.section-tag {
  display: inline-block;
  color: var(--primary-color);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.section-title {
  font-size: 36px;
  margin-bottom: 15px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

/* ==========================================================================
   Categories Grid
   ========================================================================== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.category-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-color);
  opacity: 0;
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}
.category-card:hover::before {
  opacity: 1;
}
.category-icon {
  width: 56px;
  height: 56px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary-color);
  margin-bottom: 20px;
}
.category-title {
  font-size: 20px;
  margin-bottom: 10px;
}
.category-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}
.category-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--surface-border);
  padding-top: 15px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-color);
}

/* ==========================================================================
   Machinery Cards & Catalog
   ========================================================================== */
.machinery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
}
.machinery-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.machinery-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}
.machinery-thumb {
  position: relative;
  height: 230px;
  background-color: #0f172a;
  overflow: hidden;
}
.machinery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.machinery-card:hover .machinery-thumb img {
  transform: scale(1.05);
}
.badge-status {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.status-disponible { background: #065f46; color: #a7f3d0; border: 1px solid #10b981; }
.status-reservado { background: #854d0e; color: #fef08a; border: 1px solid #eab308; }
.status-vendido { background: #7f1d1d; color: #fecaca; border: 1px solid #ef4444; }

.badge-featured {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--primary-color);
  color: #000;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.machinery-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.machinery-cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-color);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.machinery-name {
  font-size: 20px;
  margin-bottom: 12px;
  line-height: 1.3;
}
.machinery-specs-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.spec-pill {
  background: #111827;
  border: 1px solid #374151;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-muted);
}
.spec-pill strong {
  color: #fff;
}

.machinery-price-box {
  background: #111827;
  border: 1px solid #2d3748;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.price-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
}
.price-value {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 900;
  color: var(--primary-color);
}

.machinery-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: auto;
}

/* ==========================================================================
   Catalog Filter Bar
   ========================================================================== */
.catalog-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 30px;
}
.catalog-sidebar {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 24px;
  height: fit-content;
}
.filter-group {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--surface-border);
  padding-bottom: 20px;
}
.filter-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.filter-title {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 12px;
  color: #fff;
  display: flex;
  justify-content: space-between;
}
.filter-input, .filter-select {
  width: 100%;
  background: #111827;
  border: 1px solid #374151;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.filter-input:focus, .filter-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

/* ==========================================================================
   Financing Calculator Widget
   ========================================================================== */
.calculator-box {
  background: var(--surface-card);
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-md);
  padding: 35px;
  margin: 50px 0;
  box-shadow: var(--shadow-lg);
}
.calculator-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.calc-slider-group {
  margin-bottom: 24px;
}
.calc-label-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
}
.calc-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #374151;
  outline: none;
  -webkit-appearance: none;
}
.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: 2px solid #111827;
  box-shadow: 0 0 6px rgba(0,0,0,0.4);
}
.calc-result-card {
  background: #111827;
  border: 1px solid #374151;
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
}
.calc-monthly-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.calc-monthly-amount {
  font-family: var(--font-heading);
  font-size: 38px;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 15px;
}
.calc-summary-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-top: 1px solid #2d3748;
  font-size: 13px;
  color: var(--text-muted);
}
.calc-summary-row strong {
  color: #fff;
}

/* ==========================================================================
   Product Detail Page
   ========================================================================== */
.detail-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  margin-bottom: 50px;
}
.gallery-main {
  background: #0f172a;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 440px;
  margin-bottom: 15px;
}
.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.gallery-thumbs {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 10px;
}
.gallery-thumb {
  width: 90px;
  height: 65px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--surface-border);
  cursor: pointer;
  overflow: hidden;
  opacity: 0.7;
  transition: var(--transition);
  flex-shrink: 0;
}
.gallery-thumb.active, .gallery-thumb:hover {
  opacity: 1;
  border-color: var(--primary-color);
}
.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  background: var(--surface-card);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.detail-specs-table tr {
  border-bottom: 1px solid var(--surface-border);
}
.detail-specs-table tr:last-child {
  border-bottom: none;
}
.detail-specs-table th {
  padding: 12px 18px;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  width: 45%;
  background: rgba(0, 0, 0, 0.2);
}
.detail-specs-table td {
  padding: 12px 18px;
  color: #fff;
  font-weight: 700;
}

/* ==========================================================================
   FAQ Accordions
   ========================================================================== */
.faq-accordion {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--primary-color);
}
.faq-question {
  padding: 20px 24px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: #fff;
  user-select: none;
}
.faq-item.active .faq-question {
  color: var(--primary-color);
}
.faq-icon {
  font-size: 20px;
  transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Contact Page
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}
.contact-info-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 35px;
}
.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-item-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-form-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  background: #111827;
  border: 1px solid #374151;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: var(--transition);
}
.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}
textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   Quote Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(5px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  display: flex;
  opacity: 1;
}
.modal-container {
  background: #182232;
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-md);
  max-width: 680px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal-container {
  transform: translateY(0);
}
.modal-header {
  padding: 20px 28px;
  background: #111827;
  border-bottom: 1px solid var(--surface-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title {
  font-size: 20px;
  color: var(--primary-color);
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 28px;
  cursor: pointer;
}
.modal-close:hover {
  color: #fff;
}
.modal-body {
  padding: 28px;
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform 0.3s ease;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  color: #fff;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #0b0f19;
  border-top: 3px solid #1f2937;
  padding: 70px 0 30px;
  color: var(--text-muted);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-title {
  font-size: 16px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 2px;
  background: var(--primary-color);
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}
.footer-bottom {
  border-top: 1px solid #1f2937;
  padding-top: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid, .detail-grid, .calculator-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
}

@media (max-width: 768px) {
  .header-top {
    display: none;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 72px);
    background: #111827;
    flex-direction: column;
    padding: 30px 20px;
    transition: left 0.3s ease;
    border-top: 1px solid #1f2937;
  }
  .nav-menu.open {
    left: 0;
  }
  .nav-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 34px;
  }
}