/* === ACE AVIATION SUPPLY — Global Styles === */
:root {
  --green: #1B4D2E;
  --green-light: #2a6b42;
  --purple: #4A2D6B;
  --purple-light: #5e3d85;
  --text: #1A1A1A;
  --text-light: #555;
  --white: #FFFFFF;
  --off-white: #F8F9FA;
  --amber: #D97706;
  --success: #16A34A;
  --border: #E5E7EB;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --transition: all 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--purple); }

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

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

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 2px solid var(--green);
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--green);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.logo svg { width: 32px; height: 32px; }

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

.nav-links a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--green);
  border-bottom-color: var(--green);
}

.cart-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text);
  font-weight: 500;
}

.cart-badge {
  background: var(--green);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: -8px;
  right: -10px;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: var(--transition);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--purple);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--white);
  color: var(--green);
  border: 2px solid var(--green);
}

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

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

.btn-amber:hover {
  background: #b45309;
  color: var(--white);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.1rem;
}

/* === HERO === */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--green) 0%, #0f2e1a 50%, var(--purple) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding: 60px 24px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></svg>') repeat;
  background-size: 200px;
}

.hero-content { position: relative; z-index: 1; max-width: 800px; }

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.6;
}

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

.trust-strip {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 48px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  opacity: 0.85;
}

/* === SECTION STYLES === */
.section { padding: 80px 0; }
.section-green { background: var(--green); color: var(--white); }
.section-purple { background: var(--purple); color: var(--white); }
.section-gray { background: var(--off-white); }

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-green .section-header p,
.section-purple .section-header p { color: rgba(255,255,255,0.8); }

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

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--off-white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* === PRODUCT CARDS === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.product-image {
  height: 200px;
  background: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.9rem;
}

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

.product-info { padding: 20px; }

.product-info h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.product-part-number {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.product-description {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 12px;
  line-height: 1.5;
}

.product-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 12px;
}

.product-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.qty-selector {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.qty-selector button {
  width: 32px;
  height: 36px;
  border: none;
  background: var(--off-white);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.qty-selector button:hover { background: var(--border); }

.qty-selector input {
  width: 40px;
  height: 36px;
  border: none;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  -moz-appearance: textfield;
}

.qty-selector input::-webkit-outer-spin-button,
.qty-selector input::-webkit-inner-spin-button { -webkit-appearance: none; }

/* === CATEGORY STRIP === */
.category-strip {
  background: #F8F9FA;
  padding: 80px 0;
}

.category-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-decoration: none;
  color: #1A1A1A;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  color: #1A1A1A;
}

.category-icon {
  margin-bottom: 16px;
}

.category-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #1A1A1A;
}

.category-card p {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.6;
}

/* === FAQ SECTION === */
.faq-section {
  background: #FFFFFF;
  border-top: 1px solid #E5E7EB;
  padding: 80px 0;
  color: #1A1A1A;
}

.faq-section h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 40px;
  color: #1A1A1A;
}

.faq-section .faq-list details {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.faq-section .faq-list summary {
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #1A1A1A;
}

.faq-section .faq-list summary::-webkit-details-marker { display: none; }

.faq-section .faq-list summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--green);
  transition: var(--transition);
}

.faq-section .faq-list details[open] summary::after { content: '\2212'; }

.faq-section .faq-list p {
  margin-top: 12px;
  color: #555;
  line-height: 1.7;
  font-size: 0.95rem;
}

/* === FEATURED PRODUCT === */
.featured-product {
  background: #F8F9FA;
  padding: 80px 0;
}

.featured-product h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
  color: #1A1A1A;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.featured-image {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.featured-details h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.featured-details .tagline {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

.value-stack {
  list-style: none;
  margin-bottom: 24px;
}

.value-stack li {
  padding: 6px 0;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-stack li::before {
  content: '\2713';
  color: var(--success);
  font-weight: 700;
}

.shipping-note {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 12px;
}

/* === PAIN SECTION === */
.pain-section {
  padding: 80px 0;
  background: var(--white);
}

.pain-content {
  max-width: 760px;
  margin: 0 auto;
}

.pain-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}

.pain-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 16px;
}

/* === VALUE PROPS (3 cols) === */
.value-props {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.value-prop { text-align: center; }

.value-prop h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-prop p {
  opacity: 0.85;
  font-size: 0.95rem;
  line-height: 1.6;
}

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

.testimonial {
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.15);
}

.testimonial blockquote {
  font-size: 1rem;
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 16px;
}

.testimonial cite {
  font-style: normal;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* === FAQ === */
.faq-list { max-width: 760px; margin: 0 auto; }

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

.faq-item summary {
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--green);
  transition: var(--transition);
}

.faq-item[open] summary::after { content: '\2212'; }

.faq-item p {
  margin-top: 12px;
  color: var(--text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* === CHOICE CARDS === */
.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.choice-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  transition: var(--transition);
}

.choice-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-lg);
}

.choice-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 16px 0 12px;
}

.choice-card p {
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.6;
}

.choice-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

/* === COMPARISON TABLE === */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.comparison-table th,
.comparison-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  background: var(--green);
  color: var(--white);
  font-weight: 600;
}

.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:nth-child(even) { background: var(--off-white); }

/* === ANCHOR NAV === */
.anchor-nav {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 24px;
  background: var(--off-white);
  border-radius: var(--radius);
  margin-bottom: 40px;
}

/* === FILTER BAR === */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--white);
  cursor: pointer;
  font-size: 0.875rem;
  transition: var(--transition);
}

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

/* === CART === */
.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table th,
.cart-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.cart-table th {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
}

.cart-summary {
  max-width: 400px;
  margin-left: auto;
  padding: 24px;
  background: var(--off-white);
  border-radius: var(--radius-lg);
}

.cart-summary .line {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.95rem;
}

.cart-summary .total {
  border-top: 2px solid var(--green);
  margin-top: 8px;
  padding-top: 12px;
  font-weight: 700;
  font-size: 1.2rem;
}

.cart-empty {
  text-align: center;
  padding: 80px 0;
}

.cart-empty h2 { margin-bottom: 16px; }

/* === CHECKOUT === */
.checkout-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(27,77,46,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* === PRIMER PAGE === */
.primer-content {
  max-width: 800px;
  margin: 0 auto;
}

.primer-content h1 {
  font-size: 2.2rem;
  margin-bottom: 24px;
  text-align: center;
}

.primer-content h2 {
  font-size: 1.6rem;
  margin: 40px 0 16px;
  color: var(--green);
}

.primer-content h3 {
  font-size: 1.2rem;
  margin: 24px 0 12px;
}

.primer-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.primer-content ul {
  margin: 16px 0;
  padding-left: 24px;
}

.primer-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

/* Smoke system diagram */
.system-diagram {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin: 32px 0;
  text-align: center;
}

.diagram-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.diagram-step {
  background: var(--white);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.9rem;
  min-width: 140px;
}

.diagram-arrow {
  color: var(--green);
  font-size: 1.5rem;
  font-weight: 700;
}

/* Value stack on primer */
.bonus-stack {
  background: var(--off-white);
  border: 2px solid var(--green);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 32px 0;
}

.bonus-stack h3 {
  color: var(--green);
  margin-bottom: 16px;
}

.bonus-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.bonus-item:last-child { border-bottom: none; }

.bonus-item .label { font-weight: 600; }

.bonus-item .value {
  color: var(--green);
  font-weight: 700;
}

/* === ADMIN === */
.admin-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  background: var(--green);
  color: var(--white);
  padding: 24px 0;
}

.admin-sidebar h2 {
  padding: 0 20px;
  font-size: 1rem;
  margin-bottom: 24px;
  opacity: 0.7;
}

.admin-sidebar a {
  display: block;
  padding: 12px 20px;
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
}

.admin-sidebar a:hover,
.admin-sidebar a.active {
  background: rgba(255,255,255,0.1);
  color: var(--white);
}

.admin-main { padding: 32px; }

.admin-main h1 {
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card .label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.stat-card .value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--green);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.admin-table th {
  background: var(--off-white);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green { background: #dcfce7; color: #166534; }
.badge-amber { background: #fef3c7; color: #92400e; }
.badge-red { background: #fee2e2; color: #991b1b; }

/* === FOOTER === */
.site-footer {
  background: var(--text);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

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

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand h3 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.footer-brand p { font-size: 0.875rem; }

.footer-tagline {
  font-style: italic;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  list-style: none;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
}

.footer-trust {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* === ALERTS === */
.alert {
  padding: 14px 20px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* === UTILITIES === */
.text-center { text-align: center; }
.text-green { color: var(--green); }
.text-purple { color: var(--purple); }
.text-amber { color: var(--amber); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 16px 24px;
    border-bottom: 2px solid var(--green);
    box-shadow: var(--shadow-lg);
    gap: 12px;
  }
  .hamburger { display: block; }

  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero { min-height: 70vh; }
  .hero-buttons { flex-direction: column; align-items: center; }

  .card-grid,
  .testimonial-grid,
  .value-props { grid-template-columns: 1fr; }

  .featured-grid { grid-template-columns: 1fr; }
  .featured-image { height: 250px; }
  .category-cards { grid-template-columns: 1fr; }

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

  .checkout-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .trust-strip { gap: 20px; }
  .section { padding: 48px 0; }

  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    padding: 0;
    z-index: 100;
    overflow-x: auto;
  }
  .admin-sidebar h2 { display: none; }
  .admin-sidebar a { white-space: nowrap; padding: 12px 16px; font-size: 0.8rem; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }

  .diagram-flow { flex-direction: column; }
  .diagram-arrow { transform: rotate(90deg); }

  .anchor-nav { flex-direction: column; align-items: center; }

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

  .footer-top { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .container { padding: 0 16px; }
  .section-header h2 { font-size: 1.6rem; }
}