/* ==========================================================================
   Atelier Papier - Design System & Global Stylesheet
   Minimal, Editorial, Luxury Interior & Surface Brand Aesthetic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #FFFFFF;
  --bg-alt: #F6F5F2;
  --bg-subtle: #FBFBF9;
  --text-main: #1B1B1B;
  --text-muted: #676767;
  --text-light: #949494;
  --border-color: #E4E2DD;
  --border-dark: #1B1B1B;
  --accent: #BA6E4F; /* Terracotta luxury accent */
  --accent-soft: #F4ECE4;
  --sage: #687865;
  --sage-soft: #EEF2EC;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-pill: 9999px;
  
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --header-height: 80px;
  --container-max: 1440px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Box Sizing */
*, *::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-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

@media (max-width: 768px) {
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}

.text-serif {
  font-family: var(--font-serif);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-main);
  line-height: 1.1;
}

.brand-subtitle {
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 2px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-main);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--text-main);
  transition: width 0.25s ease;
}

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

.nav-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.nav-badge-pill:hover {
  border-color: var(--text-main);
  background: #FFF;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--text-main);
  transition: var(--transition);
  position: relative;
}

.action-btn:hover {
  background-color: var(--bg-alt);
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background-color: var(--text-main);
  color: #FFF;
  font-size: 0.7rem;
  font-weight: 600;
  min-width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Mobile Hamburger */
.hamburger-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.hamburger-line {
  width: 22px;
  height: 1.5px;
  background-color: var(--text-main);
  transition: var(--transition);
}

@media (max-width: 1024px) {
  .nav-desktop {
    display: none;
  }
  .hamburger-btn {
    display: flex;
  }
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-drawer.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 85%;
  max-width: 360px;
  height: 100%;
  background: var(--bg-primary);
  transform: translateX(-100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  overflow-y: auto;
}

.mobile-nav-drawer.open .mobile-drawer-content {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.mobile-drawer-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.mobile-drawer-link {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text-main);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.25rem 0;
}

.mobile-drawer-link.highlight {
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--text-main);
  color: #FFF;
  border: 1px solid var(--text-main);
}

.btn-primary:hover {
  background-color: #333;
  border-color: #333;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-dark);
}

.btn-outline:hover {
  background-color: var(--text-main);
  color: #FFF;
}

.btn-accent {
  background-color: var(--accent);
  color: #FFF;
  border: 1px solid var(--accent);
}

.btn-accent:hover {
  background-color: #A0593B;
  border-color: #A0593B;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: 0.95rem;
}

/* Hero Section */
.hero-section {
  position: relative;
  background-color: var(--bg-alt);
  padding: 5rem 0 6rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  max-width: 620px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 1.75rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

.hero-image-frame {
  width: 100%;
  aspect-ratio: 4/5;
  background: #FFF;
  border: 1px solid var(--border-color);
  padding: 1rem;
  box-shadow: 0 20px 40px -15px rgba(0,0,0,0.05);
  border-radius: var(--radius-xs);
}

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

.hero-floating-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: #FFF;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 25px rgba(0,0,0,0.04);
  max-width: 220px;
}

.hero-floating-badge p {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.2;
}

.hero-floating-badge span {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (max-width: 992px) {
  .hero-section {
    padding: 3.5rem 0 4rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual {
    max-width: 500px;
    margin: 0 auto;
  }
}

/* 3-Step "How It Works" Section */
.steps-section {
  padding: 5rem 0;
  background: #FFF;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4rem;
}

.section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  position: relative;
}

.step-card {
  padding: 2.5rem 2rem;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-dark);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 1.25rem;
}

.step-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.step-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.6;
}

@media (max-width: 860px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Featured Collections Section */
.collections-section {
  padding: 5.5rem 0;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
}

.collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.collection-card {
  position: relative;
  overflow: hidden;
  background: #FFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  transition: var(--transition);
}

.collection-card:hover {
  border-color: var(--text-main);
}

.collection-thumb {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-alt);
}

.collection-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.collection-card:hover .collection-thumb img {
  transform: scale(1.05);
}

.collection-info {
  padding: 1.5rem;
}

.collection-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.collection-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.collection-link {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.collection-link:hover {
  color: var(--accent);
}

/* Product Cards (General) */
.product-card {
  background: #FFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  border-color: #CCC;
}

.product-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  background-color: var(--bg-alt);
  overflow: hidden;
  cursor: pointer;
}

.product-thumb-primary,
.product-thumb-secondary {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.35s ease, transform 0.4s ease;
}

.product-thumb-secondary {
  opacity: 0;
}

.product-card:hover .product-thumb-secondary {
  opacity: 1;
}

.product-card:hover .product-thumb-primary {
  transform: scale(1.03);
}

.badge-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-xs);
  background: #FFF;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.badge-new {
  background: var(--text-main);
  color: #FFF;
  border-color: var(--text-main);
}

.quick-view-btn {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-xs);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  white-space: nowrap;
  z-index: 3;
}

.product-card:hover .quick-view-btn {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.product-details {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-category-sub {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin-bottom: 0.3rem;
}

.product-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.product-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.product-swatches {
  display: flex;
  align-items: center;
  gap: 4px;
}

.swatch-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.15);
}

.product-prices {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid #F0EFEA;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.sample-price-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.sample-price-val {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-main);
}

/* Add Sample Button */
.btn-add-sample {
  margin-top: 0.85rem;
  width: 100%;
  padding: 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--text-main);
  background: #FFF;
  color: var(--text-main);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.btn-add-sample:hover {
  background: var(--text-main);
  color: #FFF;
}

.btn-add-sample.selected {
  background: var(--sage);
  color: #FFF;
  border-color: var(--sage);
}

.btn-add-sample.selected:hover {
  background: #4F5E4C;
  border-color: #4F5E4C;
}

/* Modals (Quick View & Search) */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #FFF;
  width: 100%;
  max-width: 880px;
  max-height: 90vh;
  border-radius: var(--radius-xs);
  overflow-y: auto;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  transform: translateY(20px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  color: var(--text-main);
}

.modal-close-btn:hover {
  background: var(--text-main);
  color: #FFF;
}

.quick-view-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 768px) {
  .quick-view-grid {
    grid-template-columns: 1fr;
  }
}

.quick-view-gallery {
  background: var(--bg-alt);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.quick-view-main-img {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 4/5;
  object-fit: cover;
  border: 1px solid var(--border-color);
  background: #FFF;
}

.quick-view-info {
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--text-main);
  color: #FFF;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-xs);
  font-size: 0.875rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideInToast 0.3s ease;
  pointer-events: auto;
}

.toast.toast-error {
  background: #C0392B;
}

.toast.toast-success {
  background: var(--sage);
}

@keyframes slideInToast {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Footer */
.site-footer {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-link:hover {
  color: var(--text-main);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Form inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background-color: #FFF;
  color: var(--text-main);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--text-main);
}

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

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}