/* ByteStash-inspired dark theme for Frozen Pi Labs */

:root {
  --bg: #0f172a;           /* dark-bg */
  --surface: #1e293b;      /* dark-surface */
  --border: #334155;       /* dark-border */
  --text: #e2e8f0;         /* dark-text */
  --text-secondary: #94a3b8; /* dark-text-secondary */
  --primary: #2563eb;      /* blue-600 */
  --primary-dark: #1d4ed8; /* blue-700 */
  --primary-light: #3b82f6; /* blue-500 */
  --hover: #334155;        /* dark-hover */
  --hover-more: #4d6280;   /* dark-hover-more */
  --success: #10b981;
  --error: #ef4444;
  --radius: 0.5rem;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 { color: var(--text); margin-bottom: 0.5rem; line-height: 1.3; }
.page-title, .article-title, .section-title { color: #2094f3; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.main { flex: 1; padding: 2rem 0; }

/* Header */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}
.logo-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}
.logo {
  display: flex;
  align-items: center;
}
.logo-text {
  font-size: 1.75rem;
  font-weight: 700;
  color: #2094f3;
  line-height: 1;
}
.header-tagline {
  font-size: 0.875rem;
  color: #2094f3;
}
.nav-list {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}
.nav-link {
  color: var(--text);
  font-weight: 500;
  padding: 0.5rem;
  border-radius: var(--radius);
}
.nav-link:hover {
  background: var(--hover);
  text-decoration: none;
}
.nav-link.admin { color: var(--success); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

/* Footer */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}
.footer-links {
  margin-top: 0.5rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}
.footer-links a { color: var(--text-secondary); }
.footer-links a:hover { color: var(--primary); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.card-image-link {
  display: block;
}
.card-image {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.card-body { padding: 1rem; }
.link-item {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 0.75rem;
  align-items: start; /* align items to top */
}
.link-item .card-body {
  padding: 0.75rem;
}
.link-item .card-image {
  width: 200px;
  height: 200px;
  object-fit: cover;
}
.link-list {
  max-width: 800px;
  margin: 0 auto;
}
.category-badge {
  display: inline-block;
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}
.excerpt { color: var(--text-secondary); margin: 0.5rem 0; }
.meta { display: flex; gap: 1rem; font-size: 0.875rem; color: var(--text-secondary); }
.meta-item { margin-right: 1rem; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 500;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }

/* Category navigation (horizontal buttons) */
.home-category-nav {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  padding: 0.75rem;
}
.category-btn {
  display: inline-block;
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.category-btn:hover {
  background: var(--hover);
  border-color: var(--primary);
  color: var(--text);
  text-decoration: none;
}
.category-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

/* Grid layouts */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.album-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.gallery-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

/* Article detail */
.article-detail { max-width: 800px; margin: 0 auto; }
.article-header { margin-bottom: 2rem; }
.article-title { font-size: 2.25rem; margin-bottom: 0.5rem; }
.article-meta { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 1rem; }
.lead { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.article-featured-image { width: 100%; max-height: 500px; object-fit: cover; border-radius: var(--radius-lg); margin-bottom: 2rem; }
.article-body { font-size: 1.1rem; line-height: 1.8; }
.article-body p { margin-bottom: 1.5rem; }
.article-body img { max-width: 100%; height: auto; border-radius: var(--radius-md); }
.article-body .pics-left { float: left; margin: 0 1.5rem 1rem 0; max-width: 320px; }
.article-body .pics-right { float: right; margin: 0 0 1rem 1.5rem; max-width: 320px; }
.article-body .pics { display: block; margin: 1.5rem auto; max-width: 600px; }
.article-images { margin-top: 2rem; }
.article-images h3 { margin-bottom: 1rem; }
.clearfix::after { content: ""; display: table; clear: both; }

/* Back link */
.back-link { margin-top: 2rem; }

/* Pagination */
.pagination { display: flex; gap: 1rem; margin: 2rem 0; align-items: center; }

/* Search */
.search-form { display: flex; gap: 0.5rem; margin-bottom: 2rem; }
.search-input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
}

/* Messages */
.messages { margin-bottom: 1rem; }
.message { padding: 0.75rem; border-radius: var(--radius); margin-bottom: 0.5rem; }
.message.success { background: rgba(16, 185, 129, 0.2); border: 1px solid var(--success); }
.message.error { background: rgba(239, 68, 68, 0.2); border: 1px solid var(--error); }

/* Form */
.contact-card {
  max-width: 500px;
  margin: 0 auto;
  padding: 1rem;
}
.contact-intro {
  margin-bottom: 1.5rem;
  color: var(--text);
  line-height: 1.7;
  font-size: 1.5rem;
  text-align: center;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.form-group label {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
.form-group textarea {
  min-height: 150px;
  resize: vertical;
}
.help-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}
.field-error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}
.form-actions {
  display: flex;
  justify-content: center;
  margin-top: 0.5rem;
}

/* Breadcrumb */
.breadcrumb { margin-bottom: 1rem; font-size: 0.875rem; color: var(--text-secondary); }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); text-decoration: none; }

/* Category nav on category_detail */
.category-nav { display: flex; justify-content: space-between; margin-top: 2rem; }

/* Filter bar */
.filter-bar { margin-bottom: 1.5rem; }
.filter-link {
  margin-right: 1rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}
.filter-link:hover {
  background: var(--hover);
  color: var(--text);
  text-decoration: none;
}
.filter-link.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Album header */
.album-header { margin-bottom: 2rem; }
.album-description { color: var(--text-secondary); font-size: 1.1rem; }

/* Link list */
.link-list { display: flex; flex-direction: column; gap: 1rem; }
.link-item .card-body { display: flex; flex-direction: column; gap: 0.5rem; }
.link-item h3 { font-size: 1.25rem; margin: 0; }
.link-item a { color: var(--primary); }

/* Thumb grid in sidebar */
.thumb-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
.thumb-link { display: flex; flex-direction: column; align-items: center; font-size: 0.75rem; color: var(--text-secondary); text-decoration: none; }
.thumb-link img { width: 100%; height: 60px; object-fit: cover; border-radius: var(--radius); }
.thumb-link:hover { color: var(--text); }
.thumb-placeholder { width: 100%; height: 60px; background: var(--bg); border: 1px dashed var(--border); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; }

/* Responsive */
@media (max-width: 768px) {
  .nav-list { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); flex-direction: column; padding: 1rem; gap: 0.5rem; }
  .nav-list.active { display: flex; }
  .nav-toggle { display: flex; }
  .card-grid, .album-grid, .image-grid, .gallery-grid { grid-template-columns: 1fr; }
  .article-meta { flex-direction: column; align-items: flex-start; }
  .contact-form {
    grid-template-columns: 1fr;
  }
}

/* Scrollbar styling */
body::-webkit-scrollbar { width: 8px; height: 8px; }
body::-webkit-scrollbar-track { background: var(--bg); }
body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
body::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }