/**
 * Baseline styles for birgitta.info
 */

/* CSS Variables */
:root {
  /* Fonts */
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-monospace: Consolas, "Liberation Mono", Menlo, Courier, monospace;
  
  /* Colors */
  --color-alpha: #666;
  --color-beta: #222;
  --color-gamma: #aaa;
  --color-delta: #b25b7a;
  --color-epsilon: #cccccc;
  
  /* Palette */
  --palette-1: #f6b7d0;
  --palette-2: #d99ebc;
  --palette-3: #bd85ad;
  --palette-4: #a06d96;
  --palette-5: #84547b;
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  color: var(--color-beta);
  background-color: #e5e5e5;
  margin: 0;
  padding: 0 2rem;
}

/* Header styles */
header {
  background: white;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.header-thumbnail img {
  width: 80px;
  height: 80px;
  object-fit: cover;
}

.header-title {
  flex: 1;
  min-width: 200px;
}

.header-title h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-beta);
  margin-bottom: 0.25rem;
}

.header-title p {
  font-size: 1rem;
  color: var(--color-alpha);
}

.social-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-links a {
  display: inline-block;
  transition: opacity 0.2s ease;
}

.social-links a:hover {
  opacity: 0.6;
}

.social-links img {
  width: 24px;
  height: 24px;
  filter: brightness(0) saturate(100%) invert(39%) sepia(17%) saturate(1293%) hue-rotate(262deg) brightness(91%) contrast(89%);
}

/* Category navigation */
.category-nav {
  padding: 1rem 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 769px) {
  .category-nav {
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .category-nav.stuck {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
  }
}

.category-nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.category-nav li {
  display: inline;
}

.category-nav a {
  color: var(--palette-5);
  text-decoration: none;
  font-weight: 700;
  padding: 0.5rem 1rem;
  transition: all 0.2s ease;
  display: inline-block;
  background: white;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  border-radius: 4px;
  text-align: center;
}

.category-nav a:hover {
  color: var(--palette-4);
  background: #f5f5f5;
}

/* Main content */
main {
  padding: 0 0 2rem;
}

/* Section styles */
.category-section {
  margin-bottom: 3rem;
  padding: 2rem;
}

@media (min-width: 769px) {
  .category-section {
    scroll-margin-top: 12rem;
  }
}

.category-section h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--palette-5);
  padding: 0 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Publications grid */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Publication tile */
.publication-card {
  position: relative;
}

.publication-tile {
  border: 3px solid var(--palette-5);
  padding: 1.5rem;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  background: white;
  display: flex;
  flex-direction: column;
  box-shadow: 5px 5px 0 0 var(--palette-5);
  color: inherit;
  text-decoration: none;
  height: 100%;
  cursor: pointer;
}

.publication-tile:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 0 var(--palette-5);
}

.publication-tile:focus-visible {
  outline: 3px solid var(--palette-2);
  outline-offset: 4px;
}

.publication-tile h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--palette-5);
  line-height: 1.4;
  order: 1;
  height: 5.25rem;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.publication-date {
  font-size: 0.875rem;
  color: var(--color-alpha);
  margin-bottom: 1rem;
  order: 2;
}

.teaser-image-container {
  width: 100%;
  height: 200px;
  margin-bottom: 1rem;
  order: 3;
  display: flex;
  align-items: flex-start;
}

.teaser-image {
  max-width: 100%;
  height: auto;
  max-height: 200px;
  filter: grayscale(100%);
  display: block;
}

.publication-description {
  margin-bottom: 1rem;
  color: #555;
  font-size: 0.95rem;
  flex-grow: 1;
  order: 4;
}

.cta-button {
  display: inline-block;
  background-color: var(--palette-5);
  color: white;
  text-decoration: none;
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  border: none;
  transition: background-color 0.2s ease;
  align-self: flex-start;
  order: 5;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
}

.cta-button:hover {
  background-color: var(--palette-4);
}

.scroll-to-top-btn {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  text-decoration: none;
  display: inline-block;
  color: var(--palette-3);
  z-index: 1;
}

.scroll-to-top-btn img {
  width: 20px;
  height: 20px;
  display: block;
}

/* Responsive design */
@media (max-width: 768px) {
  body {
    padding: 0;
  }
  
  header {
    padding: 1rem;
  }
  
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-title h1 {
    font-size: 1.5rem;
  }

  .category-nav {
    padding: 0.75rem 0;
  }

  .category-nav ul {
    gap: 0.5rem;
    padding: 0 1rem;
  }

  .category-nav a {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
  }
  
  main {
    padding: 0 0 1rem;
  }
  
  .category-section {
    padding: 1rem 0;
  }
  
  .header-content,
  .category-nav ul,
  .category-section h2 {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .category-section h2 {
    font-size: 1.5rem;
  }
  
  .publications-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 0 1rem;
  }
  
  .publication-card {
    max-width: 400px;
    width: 100%;
  }
}