:root {
  --bg-color: #f8f9fa;
  --surface-color: #ffffff;
  --text-main: #2d3748;
  --text-muted: #718096;
  --accent-color: #d32f2f;
  --border-color: #e2e8f0;
  --max-width: 800px;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a202c;
    --surface-color: #2d3748;
    --text-main: #f7fafc;
    --text-muted: #a0aec0;
    --border-color: #4a5568;
    --accent-color: #fc8181;
  }
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.7;
  padding: 2rem 1rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Base Card / Entry */
.entry {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  /* Top padding removed so the banner sits flush at the very top */
  padding: 0 2rem 2rem 2rem; 
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  overflow: hidden; 
}

/* Card Typography */
.entry h2 {
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

/* Banner Styles */
.entry-banner {
  /* Pull the banner out to the left and right edges */
  margin: 0 -2rem 1.5rem -2rem; 
  padding: 1rem 2rem;
  background-color: #f1f5f9; 
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Dark mode adjustment for the banner background */
@media (prefers-color-scheme: dark) {
  .entry-banner {
    background-color: #2d3748; 
  }
}

/* The Location Text */
.banner-location {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* The Clickable Day Button */
a.day-link {
  background-color: #cbd5e1; 
  color: var(--text-main);
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background-color 0.2s ease, transform 0.1s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

a.day-link:hover {
  background-color: var(--accent-color);
  color: #ffffff;
}

a.day-link:active {
  transform: translateY(1px);
}

/* Dark mode adjustment for the button */
@media (prefers-color-scheme: dark) {
  a.day-link {
    background-color: #4a5568; 
    color: var(--text-main);
  }
  a.day-link:hover {
    background-color: var(--accent-color);
    color: #1a202c; 
  }
}

/* Responsive Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: calc(var(--radius) - 4px);
  margin: 1.5rem 0;
}

/* Navigation & Vault Specific Styles */
.private-link {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.private-link:hover {
  color: var(--accent-color);
}

.vault-header {
  border-bottom-color: var(--accent-color);
}

.vault-card {
  border-left: 4px solid var(--accent-color);
}

/* Mobile & Small Screen Optimizations */
@media (max-width: 600px) {
  body {
    padding: 1.25rem 0.75rem;
  }

  header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
  }

  header h1 {
    font-size: 1.85rem;
  }

  .entry {
    /* Adjust padding for mobile width */
    padding: 0 1.25rem 1.25rem 1.25rem;
  }

  /* Adjust banner margins to match mobile padding */
  .entry-banner {
    margin: 0 -1.25rem 1.25rem -1.25rem;
    padding: 0.85rem 1.25rem;
  }

  .entry h2 {
    font-size: 1.4rem;
  }
}