/* ============================================================
   KALLINOS - Global Stylesheet
   Brand: Luxury Golf / Sports Wear
   Design: Minimal, Elegant, Monochrome
   ============================================================ */

/* --- Root Variables --- */
:root {
  --color-black:   #0A0A0A;
  --color-white:   #FAFAF8;
  --color-grey-1:  #1C1C1C;
  --color-grey-2:  #3A3A3A;
  --color-grey-3:  #6B6B6B;
  --color-grey-4:  #9E9E9E;
  --color-grey-5:  #D4D4D0;
  --color-grey-6:  #EBEBEA;
  --color-beige:   #F2EDE7;
  --color-beige-2: #E8E0D6;
  --color-gold:    #B8A88A;
  --color-gold-2:  #9E8E72;

  --font-primary:  'Cormorant Garamond', 'Noto Serif JP', Georgia, serif;
  --font-secondary:'Montserrat', 'Noto Sans JP', sans-serif;
  --font-body:     'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;

  --spacing-xs:    0.5rem;
  --spacing-sm:    1rem;
  --spacing-md:    2rem;
  --spacing-lg:    4rem;
  --spacing-xl:    6rem;
  --spacing-xxl:   10rem;

  --border-thin:   1px solid var(--color-grey-5);
  --border-medium: 1px solid var(--color-grey-3);

  --transition:    all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s ease;

  --shadow-soft:   0 4px 30px rgba(0,0,0,0.06);
  --shadow-medium: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-strong: 0 16px 60px rgba(0,0,0,0.18);

  --container-max: 1280px;
  --header-height: 70px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.04em;
}

.heading-xl {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-family: var(--font-secondary);
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  line-height: 1.1;
}

.heading-lg {
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-family: var(--font-primary);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.heading-md {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-family: var(--font-primary);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.heading-sm {
  font-size: 1.125rem;
  font-family: var(--font-secondary);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.label-text {
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-grey-3);
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

.section {
  padding: var(--spacing-xl) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-lg) 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-label {
  display: block;
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--spacing-xs);
}

.section-title {
  font-family: var(--font-primary);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-black);
  margin-bottom: var(--spacing-xs);
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--color-grey-3);
  letter-spacing: 0.05em;
  max-width: 480px;
  margin: 0 auto;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border-thin);
  transition: var(--transition);
}

.site-header.scrolled {
  background-color: rgba(250, 250, 248, 0.98);
  box-shadow: var(--shadow-soft);
}

.site-header.header-dark {
  background-color: rgba(10, 10, 10, 0.95);
  border-bottom-color: rgba(255,255,255,0.1);
}

.site-header.header-dark .nav-link,
.site-header.header-dark .logo-text,
.site-header.header-dark .header-icon {
  color: var(--color-white);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--spacing-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-secondary);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-black);
  transition: var(--transition-fast);
}

/* Nav */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-link {
  font-family: var(--font-secondary);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-2);
  padding: 0.25rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-black);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--color-black);
}

/* Header Icons */
.header-icons {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-grey-2);
  font-size: 1.1rem;
  border-radius: 50%;
  transition: var(--transition-fast);
  position: relative;
}

.header-icon:hover {
  color: var(--color-black);
  background: var(--color-grey-6);
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  background: var(--color-black);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 1px;
  background: var(--color-black);
  transition: var(--transition);
  transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1);
  overflow-y: auto;
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--spacing-sm) 0;
  border-top: var(--border-thin);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
  border-bottom: var(--border-thin);
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-black);
}

.mobile-nav-link i {
  font-size: 0.75rem;
  color: var(--color-grey-4);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2.5rem;
  font-family: var(--font-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-grey-1);
  color: var(--color-white);
}

.btn-secondary {
  background: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

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

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

.btn-white:hover {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}

.btn-ghost:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

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

.btn-gold:hover {
  background: var(--color-gold-2);
}

.btn-lg {
  padding: 1.1rem 3rem;
  font-size: 0.78rem;
}

.btn-sm {
  padding: 0.6rem 1.5rem;
  font-size: 0.68rem;
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- Product Card --- */
.product-card {
  background: var(--color-white);
  cursor: pointer;
  group: hover;
}

.product-card-image-wrap {
  position: relative;
  overflow: hidden;
  background: var(--color-grey-6);
  aspect-ratio: 3/4;
}

.product-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-card:hover .product-card-image {
  transform: scale(1.05);
}

.product-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.3rem 0.8rem;
  font-family: var(--font-secondary);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  z-index: 2;
}

.badge-new {
  background: var(--color-black);
  color: var(--color-white);
}

.badge-limited {
  background: var(--color-gold);
  color: var(--color-white);
}

.badge-popular {
  background: var(--color-grey-2);
  color: var(--color-white);
}

.product-card-actions {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 0.5rem;
  padding: 1rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  background: linear-gradient(transparent, rgba(0,0,0,0.3));
}

.product-card:hover .product-card-actions {
  transform: translateY(0);
}

.product-wishlist-btn {
  width: 40px;
  height: 40px;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--color-grey-3);
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.product-wishlist-btn:hover,
.product-wishlist-btn.active {
  color: #C0392B;
}

.product-card-info {
  padding: 1rem 0;
}

.product-card-category {
  font-family: var(--font-secondary);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.35rem;
}

.product-card-name {
  font-family: var(--font-primary);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--color-black);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.product-card-price {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-grey-2);
  letter-spacing: 0.05em;
}

/* Product grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem 1.5rem;
}

@media (max-width: 1100px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 1rem;
  }
}

@media (max-width: 480px) {
  .products-grid {
    gap: 1.2rem 0.75rem;
  }
}

/* --- Forms --- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-3);
  margin-bottom: 0.6rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--color-white);
  border: var(--border-thin);
  color: var(--color-black);
  font-size: 0.9rem;
  transition: var(--transition-fast);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-black);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-grey-4);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select-wrap {
  position: relative;
}

.form-select-wrap::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-grey-3);
  pointer-events: none;
  font-size: 0.7rem;
}

.form-error {
  font-size: 0.78rem;
  color: #C0392B;
  margin-top: 0.4rem;
  display: none;
}

.form-error.show {
  display: block;
}

/* --- Custom Checkbox (filter-checkbox) --- */
.filter-checkbox {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-grey-4);
  background: var(--color-white);
  flex-shrink: 0;
  position: relative;
  transition: var(--transition-fast);
  cursor: pointer;
}

.filter-checkbox.checked {
  background: var(--color-black);
  border-color: var(--color-black);
}

.filter-checkbox.checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid var(--color-white);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

/* --- Toast Notification --- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (max-width: 768px) {
  .toast-container {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
  }
}

.toast {
  background: var(--color-black);
  color: var(--color-white);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  min-width: 280px;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  box-shadow: var(--shadow-medium);
}

.toast.toast-success { border-left: 3px solid #27AE60; }
.toast.toast-error   { border-left: 3px solid #C0392B; }
.toast.toast-info    { border-left: 3px solid var(--color-gold); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(100%); }
}

/* --- Loading --- */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-white);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.loading-logo {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--color-black);
}

.loading-bar {
  width: 120px;
  height: 1px;
  background: var(--color-grey-5);
  position: relative;
  overflow: hidden;
}

.loading-bar::after {
  content: '';
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: var(--color-black);
  animation: loadingSlide 1.2s ease infinite;
}

@keyframes loadingSlide {
  0%   { left: -100%; }
  100% { left: 100%; }
}

/* Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-grey-5);
  border-top-color: var(--color-black);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 0;
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-grey-4);
}

.breadcrumb-item a:hover {
  color: var(--color-black);
}

.breadcrumb-sep {
  font-size: 0.6rem;
}

.breadcrumb-item.active {
  color: var(--color-black);
}

/* --- Page Header --- */
.page-header {
  padding: calc(var(--header-height) + 3rem) 0 3rem;
  text-align: center;
  background: var(--color-beige);
}

.page-header-label {
  display: block;
  font-family: var(--font-secondary);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.page-header-title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-black);
  margin-bottom: 0.75rem;
}

.page-header-desc {
  font-size: 0.9rem;
  color: var(--color-grey-3);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.8;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 600px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

.footer-brand-logo {
  font-family: var(--font-secondary);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 1rem;
  display: block;
}

.footer-brand-desc {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.footer-social-link {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: var(--transition-fast);
  border-radius: 50%;
}

.footer-social-link:hover {
  border-color: var(--color-white);
  color: var(--color-white);
}

.footer-nav-title {
  font-family: var(--font-secondary);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1.2rem;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-nav-link {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.03em;
  transition: var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* --- Divider --- */
.divider {
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin: 1rem auto;
}

.divider-left {
  margin-left: 0;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
}

/* stagger delay */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* --- Utility --- */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.text-gold   { color: var(--color-gold); }
.text-grey   { color: var(--color-grey-3); }
.text-white  { color: var(--color-white); }
.bg-black    { background: var(--color-black); color: var(--color-white); }
.bg-beige    { background: var(--color-beige); }
.bg-grey     { background: var(--color-grey-6); }
.hidden      { display: none !important; }
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm      { gap: var(--spacing-sm); }
.gap-md      { gap: var(--spacing-md); }
.mt-sm       { margin-top: var(--spacing-sm); }
.mt-md       { margin-top: var(--spacing-md); }
.mt-lg       { margin-top: var(--spacing-lg); }
.mb-sm       { margin-bottom: var(--spacing-sm); }
.mb-md       { margin-bottom: var(--spacing-md); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--color-white);
  max-width: 500px;
  width: 100%;
  padding: 2.5rem;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-grey-3);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-black);
}

/* Size selector */
.size-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.size-btn {
  min-width: 48px;
  height: 48px;
  padding: 0 0.75rem;
  border: var(--border-thin);
  font-family: var(--font-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition-fast);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.size-btn:hover {
  border-color: var(--color-black);
}

.size-btn.selected {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.size-btn.out-of-stock {
  opacity: 0.3;
  cursor: not-allowed;
  position: relative;
}

.size-btn.out-of-stock::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 1px;
  background: var(--color-grey-4);
  transform: rotate(-45deg);
}

/* Color selector */
.color-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.color-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.color-btn.selected {
  border-color: var(--color-black);
  box-shadow: 0 0 0 2px var(--color-white), 0 0 0 4px var(--color-black);
}

/* Quantity */
.quantity-control {
  display: flex;
  align-items: center;
  border: var(--border-thin);
  width: fit-content;
}

.qty-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--color-grey-3);
}

.qty-btn:hover {
  background: var(--color-grey-6);
  color: var(--color-black);
}

.qty-input {
  width: 56px;
  height: 44px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  border-left: var(--border-thin);
  border-right: var(--border-thin);
}

/* Accordion */
.accordion-item {
  border-bottom: var(--border-thin);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  font-family: var(--font-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--color-black);
  background: none;
  border: none;
  text-align: left;
  transition: var(--transition-fast);
}

.accordion-trigger:hover {
  color: var(--color-grey-2);
}

.accordion-icon {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
  color: var(--color-grey-4);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding-bottom: 1.25rem;
  font-size: 0.88rem;
  color: var(--color-grey-3);
  line-height: 1.8;
}

/* --- Newsletter Section --- */
.newsletter-section {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.newsletter-label {
  display: block;
  font-family: var(--font-secondary);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.newsletter-title {
  font-family: var(--font-primary);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  color: var(--color-white);
}

.newsletter-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  max-width: 420px;
  margin: 0 auto 2rem;
  line-height: 1.8;
}

.newsletter-form {
  display: flex;
  gap: 0;
  max-width: 460px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  padding: 0.9rem 1.25rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--color-white);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  transition: var(--transition-fast);
}

.newsletter-input::placeholder {
  color: rgba(255,255,255,0.35);
}

.newsletter-input:focus {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.12);
  outline: none;
}

.newsletter-btn {
  padding: 0.9rem 2rem;
  background: var(--color-white);
  color: var(--color-black);
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.newsletter-btn:hover {
  background: var(--color-grey-6);
}

@media (max-width: 480px) {
  .newsletter-form {
    flex-direction: column;
    gap: 0.75rem;
  }
  .newsletter-btn {
    padding: 0.9rem;
  }
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: var(--border-thin);
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  padding: 0.875rem 1.5rem;
  font-family: var(--font-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--color-black);
}

.tab-btn.active {
  color: var(--color-black);
  border-bottom-color: var(--color-black);
}

.tab-panel {
  display: none;
  padding: var(--spacing-md) 0;
}

.tab-panel.active {
  display: block;
}

/* Price tag */
.price-tag {
  font-family: var(--font-secondary);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-black);
}

.price-tag.price-sm {
  font-size: 1rem;
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th {
  padding: 0.875rem 1rem;
  background: var(--color-grey-6);
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-grey-3);
  text-align: left;
  border-bottom: var(--border-thin);
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: var(--border-thin);
  color: var(--color-grey-2);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: var(--color-grey-6);
}

/* Responsive visibility */
@media (max-width: 1024px) {
  .desktop-only { display: none !important; }
  .menu-toggle  { display: flex; }
  .header-nav   { display: none; }
}

@media (min-width: 1025px) {
  .mobile-only { display: none !important; }
}

/* Page top padding for fixed header */
.page-content {
  padding-top: var(--header-height);
}

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, var(--color-grey-6) 25%, var(--color-grey-5) 50%, var(--color-grey-6) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: 2px;
}

@keyframes skeletonShimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}