/* Design History Artifacts Website - Main Stylesheet */

/* ===== CSS Variables ===== */
:root {
  /* Primary Colors */
  --color-terracotta: #A63A24;
  --color-beige: #E6DFD9;
  --color-brown: #3E2B23;
  
  /* Secondary Colors */
  --color-sage: #7D9D8C;
  --color-gold: #D4B483;
  --color-slate: #5D6970;
  
  /* Neutral Colors */
  --color-offwhite: #F7F4F1;
  --color-charcoal: #333333;
  --color-lightgray: #CCCCCC;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif; /* Fallback for Neutra Text */
  --font-body: 'Libre Baskerville', Georgia, serif;
  --font-accent: 'Courier New', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;
  
  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  
  /* Container Widths */
  --container-max: 1440px;
  --container-narrow: 1200px;
}

/* ===== Reset & Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-charcoal);
  background-color: var(--color-offwhite);
  line-height: 1.6;
}

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

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

a:hover {
  color: var(--color-brown);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-brown);
}

h1 {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
  font-weight: 500;
}

h6 {
  font-size: 1rem;
  font-weight: 500;
}

p {
  margin-bottom: var(--space-md);
}

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

.text-center {
  text-align: center;
}

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

.container-narrow {
  max-width: var(--container-narrow);
}

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

.section-sm {
  padding: var(--space-lg) 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

/* ===== Header & Navigation ===== */
.header {
  background-color: var(--color-offwhite);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-md);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-terracotta);
}

.logo a {
  color: inherit;
}

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: var(--space-lg);
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  color: var(--color-brown);
  position: relative;
}

.nav-link:after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-terracotta);
  transition: width var(--transition-medium);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--color-brown);
}

/* ===== Hero Section ===== */
.hero {
  background-color: var(--color-beige);
  padding: var(--space-xxl) 0;
  position: relative;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--space-md);
  color: var(--color-terracotta);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  color: var(--color-brown);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

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

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

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

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

/* ===== Cards ===== */
.card {
  background-color: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-image {
  height: 200px;
  overflow: hidden;
}

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

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

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

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.card-text {
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

/* ===== Featured Artifacts Section ===== */
.featured-artifacts {
  padding: var(--space-xl) 0;
}

.artifacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

/* ===== Thematic Sections ===== */
.thematic-section {
  padding: var(--space-xl) 0;
  background-color: var(--color-beige);
}

.theme-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.theme-image {
  height: 300px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

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

.theme-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ===== Artifact Detail Page ===== */
.artifact-header {
  background-color: var(--color-beige);
  padding: var(--space-lg) 0;
}

.breadcrumb {
  display: flex;
  list-style: none;
  margin-bottom: var(--space-md);
}

.breadcrumb-item {
  font-size: 0.9rem;
}

.breadcrumb-item:not(:last-child):after {
  content: '/';
  margin: 0 var(--space-sm);
  color: var(--color-lightgray);
}

.artifact-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.primary-image {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.artifact-details {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.details-table {
  width: 100%;
  border-collapse: collapse;
}

.details-table tr {
  border-bottom: 1px solid var(--color-lightgray);
}

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

.details-table th {
  text-align: left;
  padding: var(--space-sm) 0;
  font-weight: 500;
  color: var(--color-brown);
  width: 40%;
}

.details-table td {
  padding: var(--space-sm) 0;
}

.thumbnails {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.thumbnail {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.thumbnail.active {
  border-color: var(--color-terracotta);
}

.thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-brown);
  color: var(--color-beige);
  padding: var(--space-xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.footer-heading {
  color: white;
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
}

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

.footer-link a {
  color: var(--color-beige);
}

.footer-link a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.9rem;
}

/* ===== Book Details ===== */
.book-details {
  margin: var(--space-md) 0;
  padding: var(--space-md);
  background-color: var(--color-offwhite);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-terracotta);
}

.book-details p {
  margin: var(--space-xs) 0;
  font-size: 0.9rem;
  color: var(--color-slate);
}

.book-details strong {
  color: var(--color-brown);
  font-weight: 500;
}

/* ===== Responsive Styles ===== */
@media (max-width: 1200px) {
  .container {
    max-width: 100%;
  }
}

@media (max-width: 992px) {
  html {
    font-size: 15px;
  }
  
  .theme-card {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-offwhite);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: var(--space-md) 0;
    flex-direction: column;
    align-items: center;
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-item {
    margin: var(--space-sm) 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .artifact-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}