/* ============================================
   University of Cologne Corporate Design
   Official Branding Guidelines (Sept 2023)
   ============================================ */

/* 
 * UzK Official Colors (from Corporate Branding Handbook)
 * Primary: #005176 (University Blue)
 * Accent 1: #009dcc (Turquoise)
 * Accent 2: #ea564f (Coral)
 * 
 * Official Fonts:
 * - Albert Sans (sans-serif) - Google Font
 * - Source Serif (serif) - Google Font
 * - Fallback: Arial
 */

:root {
  /* UzK Corporate Colors */
  --uzk-blue: #005176;
  --uzk-blue-dark: #003d59;
  --uzk-blue-light: #006a9a;
  --uzk-turquoise: #009dcc;
  --uzk-turquoise-light: #33b3d9;
  --uzk-coral: #ea564f;
  --uzk-coral-light: #ee7971;
  --uzk-black: #000000;
  --uzk-gray-dark: #666666;
  --uzk-gray: #999999;
  --uzk-gray-light: #CCCCCC;
  --uzk-gray-lightest: #F0F0F0;
  --uzk-white: #FFFFFF;
}

/* Import official UzK fonts from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Albert+Sans:wght@300;400;500;600;700&family=Source+Serif+4:wght@300;400;600;700&display=swap');

/* Override Material theme primary colors with UzK Blue */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--uzk-blue);
  --md-primary-fg-color--light: var(--uzk-blue-light);
  --md-primary-fg-color--dark: var(--uzk-blue-dark);
  --md-accent-fg-color: var(--uzk-turquoise);
  --md-accent-fg-color--transparent: rgba(0, 157, 204, 0.1);
  
  /* Apply Albert Sans as default font */
  --md-text-font: "Albert Sans", Arial, sans-serif;
  --md-code-font: "Roboto Mono", monospace;
}

/* Header styling with UzK branding */
.md-header {
  background-color: var(--uzk-blue);
  color: var(--uzk-white);
  min-height: 140px;  /* Taller header for much larger logo */
  padding: 10px 0;  /* Add padding for better spacing */
}

.md-header__title {
  color: var(--uzk-white);
  font-family: "Albert Sans", Arial, sans-serif;
  font-weight: 600;
}

.md-header__button {
  color: var(--uzk-white);
}

/* Navigation tabs with UzK colors */
.md-tabs {
  background-color: var(--uzk-blue-dark);
}

.md-tabs__link {
  color: rgba(255, 255, 255, 0.7);
  font-family: "Albert Sans", Arial, sans-serif;
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: var(--uzk-white);
}

/* Links with UzK Blue and Turquoise accents */
.md-content a {
  color: var(--uzk-blue);
  text-decoration: none;
}

.md-content a:hover {
  color: var(--uzk-turquoise);
  text-decoration: underline;
}

/* Buttons with UzK styling */
.md-button {
  background-color: var(--uzk-blue);
  color: var(--uzk-white);
  border: 2px solid var(--uzk-blue);
  font-family: "Albert Sans", Arial, sans-serif;
  font-weight: 500;
}

.md-button:hover {
  background-color: var(--uzk-turquoise);
  border-color: var(--uzk-turquoise);
}

.md-button--primary {
  background-color: var(--uzk-blue);
  border-color: var(--uzk-blue);
  color: var(--uzk-white);
}

.md-button--primary:hover {
  background-color: var(--uzk-turquoise);
  border-color: var(--uzk-turquoise);
}

/* Footer with UzK branding */
.md-footer {
  background-color: var(--uzk-gray-dark);
  color: var(--uzk-white);
}

.md-footer__inner {
  padding: 2rem 0;
}

.md-footer__link {
  color: var(--uzk-white);
  text-decoration: none;
}

.md-footer__link:hover {
  color: var(--uzk-gray-light);
  text-decoration: underline;
}

/* Custom footer section for UzK links */
.uzk-footer {
  background-color: var(--uzk-gray-dark);
  color: var(--uzk-white);
  padding: 2rem 0;
  margin-top: 3rem;
  border-top: 3px solid var(--uzk-blue);
}

.uzk-footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.uzk-footer__section h4 {
  color: var(--uzk-white);
  margin-bottom: 1rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: "Albert Sans", Arial, sans-serif;
}

.uzk-footer__section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.uzk-footer__section li {
  margin-bottom: 0.5rem;
}

.uzk-footer__section a {
  color: var(--uzk-gray-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: "Albert Sans", Arial, sans-serif;
}

.uzk-footer__section a:hover {
  color: var(--uzk-turquoise);
  text-decoration: underline;
}

.uzk-footer__copyright {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--uzk-gray);
  color: var(--uzk-gray-light);
  font-size: 0.85rem;
  font-family: "Albert Sans", Arial, sans-serif;
}

/* Logo styling - ensure SFB logo displays prominently */
.md-header__button.md-logo img {
  height: 120px;  /* MUCH larger - make it really prominent! */
  width: auto;
  max-width: 400px;  /* Allow logo to be very wide */
  filter: none;  /* Remove white filter to show original logo colors */
  padding: 10px 0;  /* Add vertical padding for better spacing */
}

/* Site title styling to match SFB hierarchy */
.md-header__title {
  color: var(--uzk-white);
  font-family: "Albert Sans", Arial, sans-serif;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

/* Add subtle subtitle under site name */
.md-header__title::after {
  content: "SFB 1252 - Universität zu Köln";
  font-size: 0.7em;
  font-weight: 400;
  opacity: 0.85;
  margin-top: 2px;
}

/* Admonitions with UzK colors */
.md-typeset .admonition.note {
  border-left-color: var(--uzk-blue);
}

.md-typeset .admonition.note > .admonition-title {
  background-color: rgba(0, 81, 118, 0.1);
}

.md-typeset .admonition.info {
  border-left-color: var(--uzk-turquoise);
}

.md-typeset .admonition.info > .admonition-title {
  background-color: rgba(0, 157, 204, 0.1);
}

.md-typeset .admonition.warning {
  border-left-color: var(--uzk-coral);
}

.md-typeset .admonition.warning > .admonition-title {
  background-color: rgba(234, 86, 79, 0.1);
}

/* Workshop cards with UzK accents */
.workshop-card {
  border-left: 4px solid var(--uzk-blue);
}

.workshop-card:hover {
  border-left-color: var(--uzk-turquoise);
  box-shadow: 0 4px 12px rgba(0, 81, 118, 0.15);
}

/* Code blocks subtle UzK accent */
.md-typeset code {
  background-color: var(--uzk-gray-lightest);
}

/* Search highlighting with UzK colors */
.md-search-result__meta {
  background-color: var(--uzk-blue);
}

.md-search-result__article--document:hover {
  background-color: rgba(0, 81, 118, 0.05);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .uzk-footer__container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .md-header__button.md-logo img {
    height: 70px;  /* Still quite large on mobile */
    padding: 6px 0;
  }
  
  .md-header {
    min-height: 90px;  /* Adjust header height for mobile */
  }
}

/* Accessibility - ensure sufficient contrast */
.md-typeset {
  color: var(--uzk-black);
  font-family: "Albert Sans", Arial, sans-serif;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  color: var(--uzk-blue);
  font-family: "Albert Sans", Arial, sans-serif;
  font-weight: 600;
  text-transform: uppercase; /* UzK style: headlines in capitals */
  letter-spacing: 0.5px;
}

.md-typeset h4,
.md-typeset h5,
.md-typeset h6 {
  color: var(--uzk-blue);
  font-family: "Albert Sans", Arial, sans-serif;
  font-weight: 600;
}

/* Body text can use Source Serif for better readability */
.md-typeset p {
  font-family: "Albert Sans", Arial, sans-serif;
}

/* Button Styles from custom.css - update to use UzK colors */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  font-family: "Albert Sans", Arial, sans-serif;
}

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

.btn-primary:hover {
  background: var(--uzk-turquoise);
  color: var(--uzk-white);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--uzk-blue);
  border: 2px solid var(--uzk-blue);
}

.btn-secondary:hover {
  background: var(--uzk-blue);
  color: var(--uzk-white);
  transform: translateY(-1px);
}

/* Accent highlights with turquoise */
.winter-highlight {
  border-color: var(--uzk-turquoise);
  box-shadow: 0 0 0 2px rgba(0, 157, 204, 0.2);
}

.winter-highlight h3 {
  color: var(--uzk-turquoise);
}

/* Print styles - maintain UzK branding */
@media print {
  .md-header,
  .md-tabs {
    background-color: var(--uzk-blue) !important;
    color: var(--uzk-white) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}