/* ==========================================================================
   TRIBUART - Design System & Styles
   Based on "Tagua Artisan - Variante Tonos Tierra" Stitch Design
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  --primary: #182319;
  --on-primary: #ffffff;
  --primary-container: #2d392d;
  --on-primary-container: #95a393;
  --secondary: #904b36;
  --on-secondary: #ffffff;
  --secondary-container: #fea58a;
  --on-secondary-container: #783924;
  --tertiary: #212121;
  --on-tertiary: #ffffff;
  --tertiary-container: #363636;
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  --success: #2e7d32;
  --success-container: #e8f5e9;
  --surface: #fbf9f4;
  --surface-dim: #dbdad5;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f3ee;
  --surface-container: #f0eee9;
  --surface-container-high: #eae8e3;
  --surface-container-highest: #e4e2dd;
  --on-surface: #1b1c19;
  --on-surface-variant: #444842;
  --on-background: #1b1c19;
  --background: #fbf9f4;
  --outline: #747872;
  --outline-variant: #c4c8c0;
  --inverse-surface: #30312e;
  --inverse-on-surface: #f2f1ec;
  --surface-tint: #556254;
  --surface-variant: #e4e2dd;

  --font-serif: 'Noto Serif', Georgia, serif;
  --font-sans: 'Manrope', system-ui, sans-serif;

  --spacing-unit: 8px;
  --spacing-gutter: 24px;
  --spacing-margin: 64px;
  --container-max: 1280px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-full: 12px;

  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 700ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-background);
  background-color: var(--background);
}

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

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

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

input, textarea {
  font-family: inherit;
  outline: none;
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ---------- Announcement Bar ---------- */
.announcement-bar {
  background-color: var(--primary);
  color: var(--on-primary);
  padding: 10px 16px;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* ---------- Header / Navbar ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #fdfcfb;
  border-bottom: 1px solid rgba(214, 211, 207, 0.6);
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px 64px;
}

.header-logo {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--on-surface);
  position: relative;
  padding-bottom: 4px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background-color: var(--primary);
  transition: width var(--transition-normal);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--primary);
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.lang-switch:hover {
  background-color: var(--surface-container);
}

.lang-switch .lang-active {
  font-weight: 700;
}

.lang-switch .material-symbols-outlined {
  font-size: 20px;
}

.mobile-menu-btn {
  display: none;
  color: var(--primary);
  padding: 8px;
}

.mobile-menu-btn .material-symbols-outlined {
  font-size: 28px;
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(251, 249, 244, 0.98);
  z-index: 200;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--primary);
}

.mobile-nav-close {
  position: absolute;
  top: 20px; right: 24px;
  color: var(--primary);
  padding: 8px;
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  height: 85vh;
  min-height: 550px;
  max-height: 900px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(24, 35, 25, 0.35);
  mix-blend-mode: multiply;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 0 24px;
  max-width: 800px;
}

.hero-content h1 {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--on-primary);
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards 0.3s;
}

.hero-content p {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease forwards 0.6s;
}

/* ---------- Seasonal Section ---------- */
.seasonal {
  background-color: var(--surface-container-low);
  margin: var(--spacing-margin) auto;
  padding: var(--spacing-margin);
  max-width: var(--container-max);
  border-radius: var(--radius-lg);
}

.seasonal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-gutter);
  align-items: center;
}

.seasonal-content {
  padding: 0 32px;
}

.seasonal-label {
  color: var(--secondary);
  font-size: 14px;
  letter-spacing: 0.1em;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}

.seasonal-content h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: 24px;
}

.seasonal-content p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 32px;
}

.seasonal-image {
  height: 500px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.seasonal-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.seasonal-image:hover img {
  transform: scale(1.03);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.05em;
  font-weight: 600;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-normal), color var(--transition-normal), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background-color: var(--primary);
  color: var(--on-primary);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background-color: var(--primary-container);
}

/* ---------- Catalog Section ---------- */
.catalog {
  padding: var(--spacing-margin);
  max-width: var(--container-max);
  margin: 0 auto;
}

.catalog-header {
  text-align: center;
  margin-bottom: 64px;
}

.catalog-header h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: 16px;
}

.catalog-header p {
  font-size: 16px;
  color: var(--on-surface-variant);
  max-width: 600px;
  margin: 0 auto;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-gutter);
  row-gap: 56px;
}

.product-card { cursor: pointer; }

.product-card-image {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--surface-container);
  margin-bottom: 20px;
}

.product-card-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: transform var(--transition-slow);
}

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

.product-card h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 6px;
}

.product-card p {
  font-size: 15px;
  color: var(--on-surface-variant);
}

/* ---------- Story Section ---------- */
.story {
  background-color: var(--surface-container-high);
  padding: var(--spacing-margin) 0;
  margin: var(--spacing-margin) 0;
}

.story-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-margin);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.story-image {
  height: 600px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.story-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  opacity: 0.9;
  mix-blend-mode: multiply;
  transition: filter var(--transition-slow);
}

.story-image:hover img {
  filter: grayscale(0.3);
}

.story-content h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: 24px;
}

.story-content .text-lg {
  font-size: 18px;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 24px;
}

.story-content .text-md {
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 32px;
}

.story-divider {
  width: 64px;
  height: 1px;
  background-color: var(--outline-variant);
}

/* ---------- Contact Section ---------- */
.contact {
  padding: var(--spacing-margin);
  max-width: 720px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 48px;
}

.contact-header h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 16px;
}

.contact-header p {
  color: var(--on-surface-variant);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.form-group label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--outline-variant);
  padding: 10px 0;
  font-size: 16px;
  color: var(--on-surface);
  transition: border-color var(--transition-normal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--outline);
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--primary);
}

.form-group textarea {
  resize: none;
  min-height: 100px;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

#response-msg {
  font-size: 14px;
  font-weight: 500;
  min-height: 20px;
}

#response-msg.success-msg {
  color: var(--success);
}

#response-msg.error-msg {
  color: var(--error);
}

.loader {
  width: 20px; height: 20px;
  border: 2px solid var(--on-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

.btn .loader {
  margin-left: 8px;
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--surface-container-high);
  border-top: 1px solid rgba(214, 211, 207, 0.4);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 64px;
  align-items: center;
}

.footer-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  margin-bottom: 16px;
}

.footer-copy {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--outline);
  letter-spacing: 0.02em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: flex-end;
}

.footer-nav a {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--outline);
  letter-spacing: 0.02em;
  transition: color var(--transition-normal), transform var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--primary);
  transform: translateY(-1px);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root {
    --spacing-margin: 40px;
  }

  .header-inner { padding: 14px 32px; }
  .footer-inner { padding: 40px 32px; }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .story-grid {
    gap: 40px;
    padding: 0 40px;
  }

  .story-image { height: 450px; }
}

@media (max-width: 768px) {
  :root {
    --spacing-margin: 28px;
  }

  .main-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .mobile-nav { display: flex; }

  .header-inner { padding: 12px 20px; }
  .header-logo { height: 36px; }

  .hero { height: 70vh; min-height: 450px; }
  .hero-content h1 { font-size: 36px; }
  .hero-content p { font-size: 16px; }

  .seasonal-grid {
    grid-template-columns: 1fr;
  }
  .seasonal-content {
    padding: 0;
    order: 2;
  }
  .seasonal-image {
    height: 350px;
    order: 1;
  }
  .seasonal { padding: var(--spacing-margin); }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    row-gap: 40px;
  }
  .product-card h3 { font-size: 18px; }
  .product-card p { font-size: 14px; }

  .story-grid {
    grid-template-columns: 1fr;
    padding: 0 var(--spacing-margin);
  }
  .story-image { height: 350px; }
  .story-content h2 { font-size: 28px; }

  .contact-header h2 { font-size: 28px; }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 32px 20px;
    text-align: center;
  }
  .footer-nav {
    justify-content: center;
  }
  .footer-logo { margin: 0 auto 16px; }
}

@media (max-width: 480px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .hero-content h1 { font-size: 30px; }

  .seasonal-content h2 { font-size: 26px; }
  .catalog-header h2 { font-size: 26px; }

  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn { width: 100%; }
}