/* ==========================================================================
   EP Climatização — Catálogo Oficial & Vendas de Ar-Condicionado
   Identidade: Azul Polar / Navy & Ciano Elétrico | Mobile First & Responsivo
   ========================================================================== */

:root {
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-dark: #075985;
  --cyan-accent: #38bdf8;
  --navy-dark: #0b1528;
  --navy-surface: #111e38;

  --whatsapp-green: #25d366;
  --whatsapp-hover: #1ebd56;

  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-card: #cbd5e1;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 14px rgba(11,21,40,0.08);
  --shadow-lg: 0 10px 28px rgba(11,21,40,0.12);
  --shadow-whatsapp: 0 4px 18px rgba(37,211,102,0.35);

  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.top-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 20px;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: #e0f2fe;
  color: var(--primary-dark);
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--whatsapp-green);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-whatsapp);
  transition: all 0.2s ease;
}

.header-cta-btn:hover {
  background: var(--whatsapp-hover);
  transform: translateY(-1px);
}

.whatsapp-svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #0d2847 100%);
  color: #ffffff;
  padding: 48px 20px 40px;
  text-align: center;
  border-bottom: 3px solid var(--cyan-accent);
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-block;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--cyan-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-title {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.5;
  margin-bottom: 24px;
}

.hero-badges-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-feature-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: #f1f5f9;
}

/* Main Container */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* Controls Bar (Search + Filter Tabs) */
.controls-bar {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-box-wrap {
  position: relative;
  max-width: 460px;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  outline: none;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.search-icon-svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-dim);
}

/* Category Filter Tabs */
.categories-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.category-tab-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 9px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.category-tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.category-tab-btn.active {
  background: var(--navy-dark);
  border-color: var(--navy-dark);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.cat-count-badge {
  background: rgba(2, 132, 199, 0.15);
  color: var(--primary);
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: 4px;
}

.category-tab-btn.active .cat-count-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Catalog Grid */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 24px;
}

/* Product Card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.card-image-box {
  position: relative;
  width: 100%;
  height: 220px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card-image-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: transform 0.3s ease;
}

.product-card:hover .card-image-img {
  transform: scale(1.04);
}

.card-ref-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(11, 21, 40, 0.85);
  color: #ffffff;
  font-family: monospace;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.card-btu-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #0284c7;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

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

.card-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.card-brand-name {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--primary);
}

.card-category-label {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--text-main);
  text-decoration: none;
}

.card-title:hover {
  color: var(--primary);
}

.card-specs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.spec-chip {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 18px;
  flex: 1;
}

.card-footer-box {
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.price-label {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.price-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--navy-dark);
}

.price-sob-consulta {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
}

/* Button Pedir Cotação */
.btn-cotacao-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--whatsapp-green);
  color: #ffffff;
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-whatsapp);
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  width: 100%;
}

.btn-cotacao-whatsapp:hover {
  background: var(--whatsapp-hover);
  transform: translateY(-1px);
}

.card-link-detalhes {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.card-link-detalhes:hover {
  text-decoration: underline;
}

/* ==================== PÁGINA DO APARELHO INDIVIDUAL (/a/{codigo}) ==================== */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

@media (max-width: 820px) {
  .product-detail-layout {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 24px;
  }
}

.gallery-box {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gallery-main-img-wrap {
  width: 100%;
  height: 380px;
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.gallery-main-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
}

.gallery-thumbs-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.gallery-thumb-btn {
  width: 72px;
  height: 72px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  background: #f1f5f9;
  cursor: pointer;
  overflow: hidden;
  padding: 4px;
  transition: border-color 0.2s;
}

.gallery-thumb-btn.active {
  border-color: var(--primary);
}

.gallery-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-info-box {
  display: flex;
  flex-direction: column;
}

.detail-ref-badge {
  display: inline-block;
  align-self: flex-start;
  background: var(--navy-dark);
  color: #ffffff;
  font-family: monospace;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.detail-title {
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--navy-dark);
  margin-bottom: 8px;
}

.detail-category-link {
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 20px;
  display: inline-block;
}

.detail-price-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.detail-price-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy-dark);
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.spec-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}

.spec-name {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 600;
}

.spec-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.detail-desc-box {
  margin-bottom: 28px;
}

.detail-desc-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--navy-dark);
}

.detail-desc-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.detail-whatsapp-action {
  margin-top: auto;
}

.btn-detail-whatsapp {
  padding: 16px 24px;
  font-size: 1.15rem;
  font-weight: 800;
  border-radius: var(--radius-lg);
}

.breadcrumb-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 20px;
}

.breadcrumb-back:hover {
  text-decoration: underline;
}

/* Empty State */
.empty-catalog {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: #ffffff;
  border: 1px dashed var(--border-card);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.empty-catalog h3 {
  color: var(--navy-dark);
  margin-bottom: 6px;
  font-size: 1.25rem;
}

/* Footer */
.app-footer {
  background: var(--navy-dark);
  color: #94a3b8;
  padding: 40px 20px 24px;
  border-top: 1px solid #1e293b;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-contact {
  font-size: 0.9rem;
  color: #cbd5e1;
}

.footer-contact a {
  color: var(--cyan-accent);
  text-decoration: none;
  font-weight: 700;
}

.footer-disclaimer {
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.45;
  border-top: 1px solid #1e293b;
  padding-top: 16px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: #64748b;
}

.footer-bottom a {
  color: #94a3b8;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: #ffffff;
}

.owner-login-link {
  color: #475569 !important;
  font-size: 0.75rem;
}

.owner-login-link:hover {
  color: var(--cyan-accent) !important;
}

/* Utility */
.hidden { display: none !important; }