/* Samsung Fridge UK - Main Stylesheet */
:root {
  --samsung-blue: #1428A0;
  --samsung-blue-dark: #0d1e7a;
  --samsung-blue-light: #e8eaf6;
  --text-dark: #1a1a1a;
  --text-mid: #444;
  --text-light: #666;
  --bg-light: #f7f8fc;
  --bg-white: #fff;
  --border: #e0e0e0;
  --shadow: 0 2px 12px rgba(20,40,160,0.08);
  --shadow-hover: 0 6px 24px rgba(20,40,160,0.16);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.22s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
}

a { color: var(--samsung-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ===== HEADER / NAV ===== */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--samsung-blue);
  text-decoration: none;
}

.site-logo span { color: var(--text-dark); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 12px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-mid);
  text-decoration: none;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--samsung-blue-light);
  color: var(--samsung-blue);
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--samsung-blue) 0%, #0d1e7a 60%, #1a0a5e 100%);
  color: #fff;
  padding: 80px 20px;
  text-align: center;
}

.hero-inner { max-width: 760px; margin: 0 auto; }

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  opacity: 0.88;
  margin-bottom: 28px;
}

.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn-primary {
  display: inline-block;
  background: #fff;
  color: var(--samsung-blue);
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  text-decoration: none;
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #fff;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid rgba(255,255,255,0.5);
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}

.btn-secondary:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  text-decoration: none;
}

/* ===== SECTIONS ===== */
.section { padding: 64px 20px; }
.section-alt { background: var(--bg-light); }

.container { max-width: 1200px; margin: 0 auto; }

.section-header { text-align: center; margin-bottom: 40px; }

.section-header h2 {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  background: var(--samsung-blue-light);
  color: var(--samsung-blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}

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

.card-grid-sm {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.card-img {
  width: 100%;
  height: 240px;
  background: linear-gradient(145deg, #f0f2f8 0%, #e4e8f4 100%);
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-img img {
  transform: scale(1.06);
}

/* Stretch the primary card-link to cover the whole card */
.card-link {
  position: static;
}
.card-link::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--samsung-blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.card p {
  font-size: 0.9rem;
  color: var(--text-light);
  flex: 1;
  margin-bottom: 16px;
}

.card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.spec-tag {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 0.78rem;
  color: var(--text-mid);
}

.card-link {
  display: inline-block;
  padding: 10px 18px;
  background: var(--samsung-blue);
  color: #fff;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: background var(--transition);
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.card-link:hover {
  background: var(--samsung-blue-dark);
  text-decoration: none;
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.feature-item {
  text-align: center;
  padding: 28px 20px;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
  display: block;
}

.feature-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.breadcrumb a { color: var(--samsung-blue); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

/* ===== PAGE HERO ===== */
.page-hero {
  background: linear-gradient(135deg, var(--samsung-blue) 0%, #0d1e7a 100%);
  color: #fff;
  padding: 56px 20px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero p {
  opacity: 0.88;
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--samsung-blue);
  color: #fff;
  padding: 24px 20px;
}

.stats-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  text-align: center;
}

.stat-item strong { display: block; font-size: 2rem; font-weight: 800; }
.stat-item span { font-size: 0.85rem; opacity: 0.85; }

/* ===== TABLES ===== */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--samsung-blue);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-mid);
}

tr:hover td { background: var(--bg-light); }

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  text-align: left;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dark);
  transition: background var(--transition);
}

.faq-question:hover { background: var(--bg-light); }

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--samsung-blue);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-question[aria-expanded="true"]::after { content: '-'; }

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.7;
}

.faq-answer.open { display: block; }

/* ===== CONTACT FORM ===== */
.contact-form { max-width: 600px; margin: 0 auto; }

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text-dark);
  font-family: inherit;
  transition: border-color var(--transition);
  background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--samsung-blue);
  box-shadow: 0 0 0 3px rgba(20,40,160,0.1);
}

.form-group textarea { height: 140px; resize: vertical; }

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--samsung-blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-submit:hover { background: var(--samsung-blue-dark); }

/* ===== RETAILER CARDS ===== */
.retailer-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}

.retailer-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.retailer-logo {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

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

.retailer-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 18px;
}

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

.notice-info {
  background: #e8eaf6;
  border-left: 4px solid var(--samsung-blue);
  color: var(--samsung-blue-dark);
}

.notice-tip {
  background: #e8f5e9;
  border-left: 4px solid #2e7d32;
  color: #1b5e20;
}

/* ===== AD SLOTS ===== */
.ad-slot {
  background: var(--bg-light);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  margin: 24px 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== FOOTER ===== */
.site-footer {
  background: #0d1228;
  color: rgba(255,255,255,0.75);
  padding: 56px 20px 24px;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.65);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: #fff; }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
}
.footer-bottom a:hover { color: #fff; }

.footer-links { display: flex; gap: 20px; }

/* ===== DISCLAIMER ===== */
.disclaimer {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  font-size: 0.78rem;
  color: var(--text-light);
  text-align: center;
}

/* ===== UTILITY ===== */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 2px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 0.95rem; padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .hero { padding: 56px 20px; }
  .section { padding: 48px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .card-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
}