/* ============================================================
   Mondial Atelier – style.css
   Author: Generated for Mondial Atelier
   Description: Main stylesheet – mobile-first, warm palette
============================================================ */

/* ---- 1. CSS Custom Properties (Design Tokens) ---- */
:root {
  /* Warm colour palette */
  --clr-primary:       #c8944a;   /* warm gold */
  --clr-primary-dark:  #a87535;
  --clr-primary-light: #e8c07a;
  --clr-bg:            #fdfaf5;   /* warm off-white */
  --clr-bg-warm:       #f5ede0;   /* warm cream section bg */
  --clr-dark:          #1a1410;   /* near-black */
  --clr-text:          #3d3228;
  --clr-text-muted:    #7a6a59;
  --clr-border:        #e0d4c0;
  --clr-white:         #ffffff;

  /* Typography */
  --font-serif:   'Georgia', 'Times New Roman', serif;
  --font-sans:    'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.375rem;
  --fs-xl:   1.75rem;
  --fs-2xl:  2.25rem;
  --fs-3xl:  3rem;
  --fs-4xl:  4rem;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Misc */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --shadow-sm:  0 2px 8px rgba(26, 20, 16, 0.08);
  --shadow-md:  0 8px 32px rgba(26, 20, 16, 0.12);
  --shadow-lg:  0 20px 60px rgba(26, 20, 16, 0.18);
  --transition: 0.3s ease;
  --nav-h:      72px;
}

/* ---- 2. Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ---- 3. Typography Helpers ---- */
.section-label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--clr-dark);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.section-desc {
  color: var(--clr-text-muted);
  max-width: 56ch;
  font-size: var(--fs-md);
}

/* ---- 4. Layout Helpers ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section-warm {
  background: var(--clr-bg-warm);
}

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

.section-header .section-desc {
  margin: 0 auto;
}

/* ---- 5. Buttons ---- */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border: 2px solid var(--clr-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 148, 74, 0.4);
}

.btn-light {
  background: rgba(255, 255, 255, 0.95);
  color: var(--clr-dark);
  border: 2px solid transparent;
}

.btn-light:hover,
.btn-light:focus-visible {
  background: var(--clr-white);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--clr-dark);
  color: var(--clr-white);
  border: 2px solid var(--clr-dark);
}

.btn-dark:hover,
.btn-dark:focus-visible {
  background: var(--clr-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-full { width: 100%; text-align: center; }

/* ---- 6. Navigation ---- */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar {
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

/* Scrolled state (added via JS) */
#site-header.scrolled {
  background: rgba(26, 20, 16, 0.97);
  box-shadow: var(--shadow-md);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--clr-white);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: opacity var(--transition);
}

.logo:hover { opacity: 0.85; }

.logo-mark {
  width: 38px;
  height: 38px;
  /* border: 2px solid var(--clr-primary); */
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-family: var(--font-serif);
  color: var(--clr-primary);
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: var(--fs-md);
  letter-spacing: 0.06em;
}

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

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color var(--transition);
  position: relative;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--clr-primary);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-white);
}

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

/* CTA button in nav */
.nav-link.cta-btn {
  background: var(--clr-primary);
  color: var(--clr-white);
  padding: 0.45rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition);
}

.nav-link.cta-btn::after { display: none; }

.nav-link.cta-btn:hover {
  background: var(--clr-primary-dark);
  transform: translateY(-1px);
}

/* Hamburger (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 2px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hamburger open state */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- 7. Hero / Carousel ---- */
#hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  overflow: hidden;
}

.carousel {
  position: relative;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.9s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide.active { opacity: 1; z-index: 1; }

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,20,16,0.72) 0%, rgba(26,20,16,0.3) 100%);
}

.slide-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--clr-white);
  padding: 0 var(--space-md);
  max-width: 760px;
  animation: fadeUp 0.8s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.slide-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--clr-primary-light);
  color: var(--clr-primary-light);
  padding: 0.25rem 0.9rem;
  border-radius: 20px;
  margin-bottom: var(--space-sm);
}

.slide-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 7vw, var(--fs-4xl));
  line-height: 1.1;
  margin-bottom: var(--space-sm);
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.slide-sub {
  font-size: var(--fs-md);
  opacity: 0.88;
  margin-bottom: var(--space-lg);
}

/* Carousel controls */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  color: var(--clr-white);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.3);
  transition: background var(--transition), transform var(--transition);
  backdrop-filter: blur(4px);
}

.carousel-btn:hover {
  background: var(--clr-primary);
  transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev { left: var(--space-md); }
.carousel-btn.next { right: var(--space-md); }

/* Dots */
.carousel-dots {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: var(--space-xs);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  padding: 0;
}

.carousel-dot.active,
.carousel-dot:hover {
  background: var(--clr-primary);
  transform: scale(1.3);
}

/* ---- 8. Product Cards ---- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.product-card {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .card-img-wrap img {
  transform: scale(1.07);
}

.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,20,16,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover .card-overlay { opacity: 1; }

.card-body {
  padding: var(--space-md);
}

.card-tag {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-primary);
  display: block;
  margin-bottom: var(--space-xs);
}

.card-body h3 {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  color: var(--clr-dark);
  margin-bottom: var(--space-xs);
}

.card-body p {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ---- 9. About Section ---- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-media {
  position: relative;
}

.about-img {
  width: 100%;
  border-radius: var(--radius-lg);
  aspect-ratio: 4/5;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

.about-badge {
  position: absolute;
  bottom: -var(--space-md);
  right: -var(--space-md);
  bottom: calc(var(--space-md) * -1);
  right: calc(var(--space-md) * -1);
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.badge-num {
  display: block;
  font-size: var(--fs-2xl);
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1;
}

.badge-text {
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  opacity: 0.9;
}

.about-content { padding: var(--space-sm) 0; }

.about-content p {
  color: var(--clr-text-muted);
  margin-bottom: var(--space-sm);
  font-size: var(--fs-md);
}

.about-highlights {
  margin: var(--space-md) 0 var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.about-highlights li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-sm);
  color: var(--clr-text);
  font-weight: 500;
}

.highlight-icon {
  color: var(--clr-primary);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ---- 10. Features ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-white);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--clr-primary-light);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  color: var(--clr-primary);
}

.feature-icon svg { width: 100%; height: 100%; }

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: var(--fs-xl);
  color: var(--clr-dark);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ---- 11. Stats Banner ---- */
.stats-banner {
  background: var(--clr-dark);
  padding: var(--space-xl) 0;
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  text-align: center;
}

.stat-item p {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: var(--fs-3xl);
  color: var(--clr-primary);
  font-weight: 700;
  line-height: 1;
}

.stat-unit {
  font-size: var(--fs-xl);
  color: var(--clr-primary-light);
}

/* ---- 12. Contact ---- */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info .section-desc {
  margin-bottom: var(--space-lg);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-list li {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--clr-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  flex-shrink: 0;
}

.contact-icon svg { width: 20px; height: 20px; }

.contact-list strong {
  display: block;
  font-size: var(--fs-sm);
  color: var(--clr-dark);
  margin-bottom: 2px;
}

.contact-list p {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
}

/* Contact form */
.contact-form {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-sm);
}

.form-group label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-dark);
}

.form-group label span {
  color: var(--clr-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(200,148,74,0.15);
}

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

.form-feedback {
  margin-top: var(--space-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-align: center;
  min-height: 1.5em;
}

.form-feedback.success { color: #4caf50; }
.form-feedback.error   { color: #e53935; }

/* ---- 13. Footer ---- */
#site-footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.75);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.footer-brand .logo { margin-bottom: var(--space-sm); }

.footer-brand p {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-md);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-icon {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.social-icon svg { width: 16px; height: 16px; }

.social-icon:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(200,148,74,0.08);
}

.footer-nav h4 {
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-nav a {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-nav a:hover {
  color: var(--clr-primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-md) 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.footer-bottom p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.4);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-bottom a:hover { color: var(--clr-primary-light); }

/* ---- 14. Back to Top ---- */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-md);
  z-index: 999;
  width: 44px;
  height: 44px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-sm);
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--clr-primary-dark);
}

/* ---- 15. Responsive ---- */

/* Tablet */
@media (max-width: 1024px) {
  .features-grid  { grid-template-columns: repeat(2, 1fr); }
  .stats-inner    { grid-template-columns: repeat(2, 1fr); }
  .about-inner    { gap: var(--space-xl); }
}

/* Mobile */
@media (max-width: 768px) {
  /* Nav */
  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(26,20,16,0.98);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md);
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
    pointer-events: none;
    backdrop-filter: blur(8px);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: var(--fs-base);
  }

  .nav-link::after { display: none; }
  .nav-link.cta-btn { margin-top: var(--space-sm); text-align: center; }

  /* About */
  .about-inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .about-badge {
    bottom: var(--space-sm);
    right: var(--space-sm);
  }

  /* Features */
  .features-grid { grid-template-columns: 1fr; }

  /* Stats */
  .stats-inner { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .contact-inner { grid-template-columns: 1fr; }
  .form-row      { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding-top: var(--space-xl);
  }

  .footer-bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .product-grid  { grid-template-columns: 1fr; }
  .stats-inner   { grid-template-columns: 1fr 1fr; }
  .slide-content h1 { font-size: 2.2rem; }
  .contact-form  { padding: var(--space-md); }
}

/* ---- 16. Focus visible accessibility ---- */
:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
}