/* Modern, professional styling for Circle MSP Sprint Documentation */
:root {
  --primary-blue: #1e3a5f;
  --accent-blue: #2196F3;
  --success-green: #4CAF50;
  --text-primary: #2c3e50;
  --text-secondary: #5a6c7d;
  --text-muted: #8e9aab;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e0;
  --shadow-light: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-medium: 0 4px 6px rgba(0,0,0,0.1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Header styling */
header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

header img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 50%;
  box-shadow: var(--shadow-light);
}

h1 {
  color: var(--primary-blue);
  font-size: 2.25rem;
  font-weight: 700;
  margin: 0;
  text-align: center;
  border-bottom: 3px solid var(--accent-blue);
  padding-bottom: 1rem;
  flex: 1;
}

/* Main layout */
main {
  display: flex;
  flex-direction: column-reverse;
  gap: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-medium);
  padding: 2rem;
  position: relative;
}

main.sort-asc {
  flex-direction: column;
}

/* Sort buttons */
#sort-asc, #sort-desc {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent-blue);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-light);
  z-index: 10;
}

#sort-asc:hover, #sort-desc:hover {
  background: var(--primary-blue);
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

main.sort-asc #sort-asc {
  display: none;
}

main.sort-desc #sort-desc {
  display: none;
}

/* Details elements */
details {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all 0.2s ease;
  padding: 0 1.5rem;
}

details:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-light);
}

details[open] {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-medium);
}

/* Summary styling */
summary {
  padding: 1.25rem 0;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s ease;
}

details[open] > summary {
  border-bottom-color: var(--border-light);
  margin-bottom: 1rem;
}

summary:hover {
  color: var(--accent-blue);
}

summary > * {
  display: inline-block;
  margin: 0;
  vertical-align: middle;
}

/* Headings in summaries */
summary h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-right: 1rem;
}

summary h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-right: 1rem;
}

summary h4 {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-right: 0.75rem;
}

/* Sprint descriptions */
summary p {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin: 0;
}

/* Links styling */
details a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.625rem 0;
  margin-left: 1rem;
  border-left: 2px solid transparent;
  padding-left: 1rem;
  transition: all 0.2s ease;
  font-weight: 500;
}

details a:hover {
  color: var(--accent-blue);
  border-left-color: var(--accent-blue);
  background: linear-gradient(90deg, rgba(33,150,243,0.05), transparent);
  transform: translateX(4px);
}

/* Nested details styling */
details details {
  margin: 0.5rem 0;
  border: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

details details summary {
  padding: 0.75rem 0;
}

details details[open] {
  background: var(--bg-primary);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-light);
  margin: 0.5rem 0;
}

/* Time elements */
time {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Responsive design */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }
  
  h1 {
    font-size: 1.875rem;
  }
  
  main {
    padding: 1.5rem;
  }
  
  #sort-asc, #sort-desc {
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
  }
  
  summary h2 {
    font-size: 1.25rem;
  }
  
  details a {
    margin-left: 0.5rem;
    padding-left: 0.75rem;
  }
}

/* Legacy navbar styles (in case used elsewhere) */
.navbar {
  background-color: var(--primary-blue);
  border-radius: var(--radius);
  max-width: 800px;
  box-shadow: var(--shadow-medium);
}

.navbar a {
  color: var(--text-muted);
  display: inline-block;
  font-size: 15px;
  padding: 10px;
  text-decoration: none;
  transition: color 0.2s ease;
}

.navbar a:hover {
  color: var(--bg-primary);
}