/* ==========================================================================
   HÁBITAT & METAL — Sistema de Diseño Industrial & Estilos Oficiales
   Identidad: Mobiliario Industrial Moderno, Acero Calibre 14 & Maderas Macizas
   ========================================================================== */

:root {
  --color-dark-950: #0E1114;
  --color-dark-900: #14181D;
  --color-dark-850: #1A2027;
  --color-dark-800: #222932;
  --color-steel-700: #333C4A;
  --color-steel-600: #4B5565;
  --color-steel-400: #8896A6;
  --color-rust-500: #C85A2A;
  --color-rust-600: #A8451B;
  --color-rust-700: #8A3311;
  --color-timber-600: #9E6532;
  --color-canvas-bg: #F4F5F7;
  --color-surface: #FFFFFF;
  --color-border: #E0E3E8;
  --color-border-dark: #2A323D;
  
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --shadow-sm: 0 1px 3px rgba(14, 17, 20, 0.08);
  --shadow-md: 0 4px 14px rgba(14, 17, 20, 0.12);
  --shadow-lg: 0 12px 30px rgba(14, 17, 20, 0.18);
  --shadow-xl: 0 24px 48px rgba(14, 17, 20, 0.24);
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-canvas-bg);
  color: var(--color-dark-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark-900);
  letter-spacing: -0.03em;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

/* ==========================================================================
   Header & Barra Superior
   ========================================================================== */
.top-bar {
  background-color: var(--color-dark-950);
  color: #94A3B8;
  font-size: 0.76rem;
  padding: 8px 16px;
  text-align: center;
  letter-spacing: 0.03em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.top-bar strong {
  color: #F8FAFC;
}
.top-bar span {
  display: inline-block;
  margin: 0 8px;
  opacity: 0.5;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(20, 24, 29, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-dark);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background-color: var(--color-rust-500);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.05em;
  box-shadow: 0 4px 12px rgba(200, 90, 42, 0.3);
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.28rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  line-height: 1;
}
.brand-sub {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-rust-500);
  margin-top: 4px;
}

.main-nav {
  display: none;
}
@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
  }
}
.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: #CBD5E1;
  padding: 6px 0;
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: #FFFFFF;
}
.nav-link.active::after, .nav-link:hover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-rust-500);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}
.btn-icon:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--color-rust-500);
}

.cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--color-rust-500);
  color: #FFFFFF;
  font-size: 0.68rem;
  font-weight: 800;
  width: 18px;
  height: 18px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-menu-toggle {
  display: flex;
}
@media (min-width: 992px) {
  .btn-menu-toggle {
    display: none;
  }
}

/* ==========================================================================
   Botones & Insignias
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-xs);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-rust {
  background-color: var(--color-rust-500);
  color: #FFFFFF;
}
.btn-rust:hover {
  background-color: var(--color-rust-600);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(200, 90, 42, 0.35);
}

.btn-dark {
  background-color: var(--color-dark-900);
  color: #FFFFFF;
}
.btn-dark:hover {
  background-color: var(--color-dark-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-steel {
  background: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-dark-900);
}
.btn-outline-steel:hover {
  border-color: var(--color-dark-900);
  background-color: #FFFFFF;
}

.btn-outline-dark {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}
.btn-outline-dark:hover {
  border-color: var(--color-rust-500);
  background: rgba(255, 255, 255, 0.05);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-rust {
  background-color: rgba(200, 90, 42, 0.12);
  color: var(--color-rust-500);
  border: 1px solid rgba(200, 90, 42, 0.3);
}
.badge-steel {
  background-color: rgba(255, 255, 255, 0.08);
  color: #E2E8F0;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   Secciones y Grillas
   ========================================================================== */
.section {
  padding: 80px 0;
}
.section-sm {
  padding: 44px 0;
}
.section-dark {
  background-color: var(--color-dark-900);
  color: #E2E8F0;
}
.section-dark h1, .section-dark h2, .section-dark h3 {
  color: #FFFFFF;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}
.section-header h2 {
  font-size: 2.2rem;
  margin-top: 12px;
  margin-bottom: 14px;
}
.section-header p {
  color: var(--color-steel-600);
  font-size: 1.05rem;
}
.section-dark .section-header p {
  color: #94A3B8;
}

/* Grilla de Productos */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.product-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-rust-500);
}

.product-image-wrap {
  position: relative;
  padding-top: 85%;
  background-color: #E2E8F0;
  overflow: hidden;
}
.product-image-wrap img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .product-image-wrap img {
  transform: scale(1.05);
}

.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

.product-content {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-rust-500);
  margin-bottom: 6px;
}
.product-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark-900);
  margin-bottom: 8px;
  line-height: 1.3;
}
.product-spec {
  font-size: 0.82rem;
  color: var(--color-steel-600);
  margin-bottom: 16px;
  line-height: 1.5;
  flex-grow: 1;
}
.product-price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}
.product-price {
  font-size: 1.3rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--color-dark-900);
}
.product-tax-note {
  font-size: 0.68rem;
  color: #64748B;
}

/* ==========================================================================
   Carrito Drawer
   ========================================================================== */
.cart-drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(14, 17, 20, 0.75);
  backdrop-filter: blur(4px);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.cart-drawer-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 440px;
  background-color: var(--color-surface);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
  z-index: 101;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.cart-drawer.active {
  transform: translateX(0);
}

.cart-drawer-header {
  padding: 20px 24px;
  background-color: var(--color-dark-900);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cart-drawer-header h3 {
  font-size: 1.25rem;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cart-free-shipping-bar {
  background-color: #F1F5F9;
  padding: 12px 24px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8rem;
}
.shipping-progress-bg {
  width: 100%;
  height: 6px;
  background-color: #CBD5E1;
  border-radius: 9999px;
  margin-top: 8px;
  overflow: hidden;
}
.shipping-progress-fill {
  height: 100%;
  background-color: var(--color-rust-500);
  border-radius: 9999px;
  transition: width 0.4s ease;
}

.cart-items-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cart-item {
  display: flex;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.cart-item-img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xs);
  object-fit: cover;
  background-color: #E2E8F0;
}
.cart-item-details {
  flex: 1;
}
.cart-item-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-dark-900);
}
.cart-item-variant {
  font-size: 0.75rem;
  color: var(--color-steel-600);
  margin-top: 2px;
}
.cart-item-price {
  font-size: 0.95rem;
  font-weight: 800;
  margin-top: 6px;
}
.cart-qty-ctrl {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  margin-top: 8px;
}
.cart-qty-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  font-weight: 700;
}
.cart-qty-num {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0 8px;
}

.cart-drawer-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  background-color: #F8FAFC;
}
.cart-summary-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--color-steel-600);
  margin-bottom: 6px;
}
.cart-summary-line.total {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-dark-900);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
}

/* Modales */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(14, 17, 20, 0.8);
  backdrop-filter: blur(4px);
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  padding: 32px;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}
.modal-backdrop.active .modal-card {
  transform: scale(1);
}

.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-dark-900);
  margin-bottom: 6px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background-color: #F8FAFC;
  color: var(--color-dark-900);
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-rust-500);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(200, 90, 42, 0.15);
}

/* Footer */
.site-footer {
  background-color: var(--color-dark-950);
  color: #94A3B8;
  padding-top: 70px;
  padding-bottom: 30px;
  margin-top: auto;
  border-top: 1px solid var(--color-border-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}
.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}
.footer-links a:hover {
  color: #FFFFFF;
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.78rem;
  color: #64748B;
}
@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* Toast & Cookies */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  background-color: var(--color-dark-900);
  color: #FFFFFF;
  padding: 14px 20px;
  border-radius: var(--radius-xs);
  font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: toastIn 0.3s ease;
  border-left: 4px solid var(--color-rust-500);
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  max-width: 440px;
  background-color: rgba(20, 24, 29, 0.96);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  padding: 20px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-xl);
  z-index: 150;
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
}
.cookie-banner.show {
  display: block;
  animation: toastIn 0.4s ease;
}