/* ===== Custom Properties ===== */
:root {
  --color-accent: #FF6600;
  --color-accent-visited: #FF9900;
  --color-text: #6E6E6E;
  --color-bg: #FFFFFF;
  --color-dark-bg: #6E6E6E;
  --color-dark-text: #FFFFFF;
  --max-width: 1200px;
  --content-width: 860px;
  --font-family: Arial, Helvetica, sans-serif;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  text-align: justify;
}

img {
  border: none;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
}
a:visited {
  color: var(--color-accent-visited);
}
a:hover {
  text-decoration: none;
}

h1, h2, h3 {
  font-weight: normal;
  padding-top: 0.5em;
  margin-bottom: 0.3em;
}
h1 { font-size: 1.4em; }
h2 { font-size: 1.2em; }
h3 { font-size: 1em; }

p {
  margin-bottom: 0.8em;
  font-size: 0.95em;
}

ul, ol {
  margin-left: 1.5em;
  margin-bottom: 1em;
}
li {
  margin-top: 0.5em;
}

/* ===== Site Layout ===== */
.site-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 20px;
  position: relative;
}

.site-columns {
  display: flex;
  align-items: stretch;
}

.sidebar {
  width: 170px;
  flex-shrink: 0;
  padding: 5px 15px 5px 0;
}

.sidebar-orange {
  width: 1px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

.content-column {
  flex: 1;
  min-width: 0;
  padding: 20px;
}

.logo-link {
  display: block;
}
.logo {
  display: block;
  width: 150px;
  height: auto;
}

/* ===== Navigation ===== */
.main-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 10px;
}

.main-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 1.05em;
  padding: 2px 0;
}
.main-nav a:visited {
  color: var(--color-text);
}
.main-nav a:hover,
.main-nav a.active {
  text-decoration: underline;
}

.main-nav .lang-switch {
  margin-top: 10px;
  color: var(--color-accent);
  font-size: 0.9em;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.3s;
}

/* ===== Orange Line ===== */
.orange-line {
  height: 1px;
  background-color: var(--color-accent);
  margin: 5px 0;
}

/* ===== Main Content ===== */
.main-content {
  padding: 20px 0;
  min-height: 400px;
}

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

/* ===== Footer ===== */
.site-footer {
  padding: 15px 0;
  font-size: 0.75em;
}
.site-footer .small {
  font-size: 1em;
  margin-bottom: 0.3em;
}

/* ===== Home Page ===== */
.special-message {
  border: 1px solid var(--color-text);
  text-align: center;
  padding: 20px;
  margin: 10px 0 20px;
}
.special-message p {
  text-align: center;
  margin-bottom: 0.5em;
}

.home-image {
  text-align: center;
  margin: 20px 0;
}
.home-image img {
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
}

.home-caption {
  text-align: center;
  margin: 10px 0 20px;
}

.recent-works {
  margin-top: 30px;
}
.recent-works h2 {
  text-align: center;
}

/* ===== Artwork Grid (masonry via CSS columns) ===== */
.artwork-grid {
  column-count: 5;
  column-gap: 12px;
  margin: 20px 0;
}

.artwork-thumb {
  display: block;
  break-inside: avoid;
  margin-bottom: 12px;
}
.artwork-thumb img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity 0.2s;
}
.artwork-thumb:hover img {
  opacity: 0.85;
}

/* ===== Exhibition List ===== */
.exhibition-entry {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 1.5em;
}
.exhibition-entry .expo-text {
  flex: 1;
  min-width: 0;
}
.exhibition-entry .expo-artists {
  font-size: 1.1em;
  line-height: 1.3;
  margin-bottom: 0.2em;
}
.exhibition-entry .expo-technique {
  margin-bottom: 0.1em;
}
.exhibition-entry .expo-dates {
  font-size: 0.9em;
}
.expo-previews {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.expo-previews a {
  display: block;
  line-height: 0;
}
.expo-previews img {
  height: 80px;
  width: auto;
  display: block;
}

/* ===== Exhibition Detail ===== */
.exhibition-detail .expo-image {
  text-align: center;
  margin: 20px 0;
}
.exhibition-detail .expo-image img {
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
}

.exhibition-detail .expo-info {
  margin: 15px 0;
}

.exhibition-detail .expo-description {
  margin: 20px 0;
}

/* ===== Artists List ===== */
.artists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.artist-card {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}
.artist-card img {
  width: 120px;
  height: auto;
  flex-shrink: 0;
}
.artist-card .artist-info {
  flex: 1;
}
.artist-card .artist-name {
  font-size: 1.1em;
  margin-bottom: 0.2em;
}
.artist-card .artist-technique {
  font-size: 0.9em;
}

/* ===== Artist Detail ===== */
.artist-detail .artist-image {
  text-align: center;
  margin: 20px 0;
}
.artist-detail .artist-image img {
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
}

.artist-detail .artist-bio {
  margin: 20px 0;
  max-width: var(--content-width);
}

/* ===== Artwork Detail ===== */
body.artwork-page {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
}
body.artwork-page a {
  color: var(--color-dark-text);
}
body.artwork-page a:visited {
  color: var(--color-dark-text);
}
body.artwork-page .orange-line {
  display: none;
}
body.artwork-page .sidebar,
body.artwork-page .sidebar-orange,
body.artwork-page .site-footer {
  display: none;
}
body.artwork-page .site-columns {
  display: block;
}
body.artwork-page .content-column {
  padding: 0;
}

.artwork-detail {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 20px;
  text-align: center;
}

.artwork-viewer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 20px 0;
}

.artwork-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  flex-shrink: 0;
  font-size: 2em;
  color: var(--color-dark-text);
  text-decoration: none;
  opacity: 0.4;
  transition: opacity 0.2s;
  padding: 20px 8px;
  user-select: none;
  -webkit-user-select: none;
}
.artwork-arrow:visited {
  color: var(--color-dark-text);
}
.artwork-arrow:hover {
  opacity: 1;
  text-decoration: none;
}

.artwork-detail .artwork-image {
  border: 1px solid var(--color-dark-text);
  display: inline-block;
  padding: 10px;
}
.artwork-detail .artwork-image img {
  max-width: 100%;
  max-height: 70vh;
  width: auto;
  height: auto;
  transition: opacity 0.25s ease-in-out;
}
.artwork-detail .artwork-image img.fading {
  opacity: 0;
}

.artwork-detail .artwork-info {
  margin: 20px auto;
  max-width: 400px;
  text-align: left;
}
.artwork-detail .artwork-title {
  font-size: 1.2em;
  font-style: italic;
}
.artwork-detail .artwork-price {
  margin-top: 0.5em;
  font-size: 1.1em;
  color: var(--color-accent);
}

.artwork-nav {
  margin: 20px 0;
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.artwork-nav a {
  padding: 5px 0;
}

.artwork-artist-link {
  text-align: center;
  margin: 15px 0;
}

/* ===== Catalogue Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  margin: 20px 0;
  font-size: 0.95em;
}
.pagination a {
  color: var(--color-accent);
}
.page-info {
  color: var(--color-text);
}

/* ===== Presentation / Contact ===== */
.page-content {
  max-width: var(--content-width);
}
.page-content img {
  display: block;
  margin: 10px auto;
  max-width: 600px;
}

/* ===== Admin Styles ===== */
.admin-layout {
  max-width: var(--content-width);
}
.admin-layout h2 {
  margin-bottom: 1em;
}
.admin-nav {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding: 10px 0;
  border-bottom: 1px solid #ddd;
}
.admin-nav a {
  color: var(--color-text);
  text-decoration: none;
  padding: 5px 10px;
  border: 1px solid #ddd;
  border-radius: 3px;
}
.admin-nav a:hover {
  background-color: #f5f5f5;
}

.form-group {
  margin-bottom: 15px;
}
.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  font-size: 0.9em;
}
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
  width: 100%;
  max-width: 500px;
  padding: 8px;
  border: 1px solid var(--color-text);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 0.9em;
}
.form-group textarea {
  min-height: 200px;
  max-width: 100%;
}

.btn {
  display: inline-block;
  padding: 8px 20px;
  background-color: #aaa;
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.95em;
  text-decoration: none;
}
.btn:hover {
  background-color: #777;
}
.btn-primary {
  background-color: var(--color-accent);
}
.btn-primary:hover {
  background-color: #cc5200;
}

.alert {
  padding: 10px 15px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
}
.alert-success {
  background-color: #dff0d8;
  border-color: #d6e9c6;
  color: #3c763d;
}
.alert-error {
  background-color: #f2dede;
  border-color: #ebccd1;
  color: #a94442;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 15px 0;
  font-size: 0.9em;
}
table.data-table th,
table.data-table td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}
table.data-table th {
  background-color: #f5f5f5;
}

/* ===== 404 ===== */
.error-page {
  text-align: center;
  padding: 60px 20px;
}
.error-page h1 {
  font-size: 3em;
  color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (min-width: 769px) {
  .hamburger {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .site-columns {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 5px 0;
    gap: 10px;
  }

  .sidebar-orange {
    display: none;
  }

  .content-column {
    padding: 10px 0;
  }

  .hamburger {
    display: flex;
    position: absolute;
    top: 15px;
    right: 20px;
  }

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: 10px 0;
    border-top: 1px solid #eee;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 8px 0;
    font-size: 1.1em;
  }

  .artwork-grid {
    column-count: 3;
    column-gap: 8px;
  }

  .artists-grid {
    grid-template-columns: 1fr;
  }

  .artist-card img {
    width: 80px;
  }

  .pagination {
    gap: 15px;
  }

  .expo-previews img {
    height: 60px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  .site-wrapper {
    padding: 0 10px;
  }

  .logo {
    width: 100px;
  }

  .artwork-grid {
    column-count: 2;
    column-gap: 6px;
  }

  .expo-previews {
    display: none;
  }

  .artwork-detail .artwork-image {
    padding: 5px;
  }

  .artwork-arrow {
    width: 32px;
    font-size: 1.5em;
    padding: 10px 4px;
  }

  .artwork-nav {
    gap: 20px;
  }
}