/* FutureMed Hub - Article Dark Theme
   Matches the landing page aesthetic while preserving content
   =========================================================== */

/* CSS Variables - matches main site */
:root {
  --bg-dark: #0a0f1a;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-solid: #111827;
  --accent-purple: #7c3aed;
  --accent-cyan: #06b6d4;
  --accent-teal: #14b8a6;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(148, 163, 184, 0.15);
  --highlight-bg: rgba(124, 58, 237, 0.12);
  --highlight-border: #7c3aed;
  --success-green: #10b981;
  --link-color: #60a5fa;
  --link-hover: #93c5fd;
}

/* Reset & Base */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #0f172a 50%, #1e1b4b 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  line-height: 1.7;
}

/* Back Navigation */
.article-nav {
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.article-nav a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s ease;
}

.article-nav a:hover {
  color: var(--accent-purple);
}

.article-nav a::before {
  content: '←';
  font-size: 1.1rem;
}

/* Article Container */
.container,
.article-container {
  max-width: 1100px;
  margin: 2rem auto;
  padding: 2.5rem 4rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: 
    0 4px 30px rgba(0, 0, 0, 0.3),
    0 0 60px rgba(124, 58, 237, 0.05);
}

@media (max-width: 768px) {
  .container,
  .article-container {
    margin: 1rem;
    padding: 1.5rem 1.25rem;
    border-radius: 12px;
  }
}

/* Typography */
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-top: 0;
  margin-bottom: 1.5rem;
  text-align: center;
  line-height: 1.3;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-teal);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

strong, b {
  color: var(--text-primary);
  font-weight: 600;
}

em, i {
  color: var(--text-secondary);
}

/* Links */
a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

/* Highlight Boxes */
.highlight,
.glossary,
.tip,
blockquote {
  background: var(--highlight-bg);
  border-left: 4px solid var(--highlight-border);
  padding: 1.25rem 1.5rem;
  border-radius: 0 8px 8px 0;
  margin: 1.75rem 0;
}

.highlight strong,
.glossary strong,
.tip strong {
  color: var(--accent-purple);
}

blockquote {
  font-style: italic;
  color: var(--text-secondary);
}

blockquote::before {
  content: '"';
  font-size: 3rem;
  color: var(--accent-purple);
  opacity: 0.3;
  position: absolute;
  margin-left: -1rem;
  margin-top: -0.5rem;
}

/* Joke/Snarky asides */
.joke,
.snarky {
  font-style: italic;
  color: var(--text-muted);
  background: rgba(6, 182, 212, 0.08);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin: 1rem 0;
  border-left: 3px solid var(--accent-cyan);
}

/* Lists */
ul, ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.6rem;
}

li b, li strong {
  color: var(--accent-cyan);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  background: rgba(17, 24, 39, 0.6);
  border-radius: 8px;
  overflow: hidden;
}

th {
  background: linear-gradient(135deg, var(--accent-purple), #6d28d9);
  color: #fff;
  font-weight: 600;
  padding: 1rem;
  text-align: left;
  font-size: 0.95rem;
}

td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

tr:hover td {
  background: rgba(124, 58, 237, 0.08);
}

tr:last-child td {
  border-bottom: none;
}

/* Images */
.img-section {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.75rem;
  margin: 2rem 0;
}

.img-block {
  text-align: center;
  flex: 1 1 220px;
  min-width: 180px;
  max-width: 300px;
}

.img-block img,
img:not([class]) {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  margin-bottom: 0.75rem;
  box-shadow: 
    0 4px 20px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(124, 58, 237, 0.1);
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.img-block img:hover,
img:not([class]):hover {
  transform: scale(1.02);
  box-shadow: 
    0 8px 30px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(124, 58, 237, 0.15);
}

.img-caption {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 0.5rem;
}

/* Standalone images in articles */
body > img,
.container > img,
.article-container > img,
main > img,
p > img {
  display: block;
  margin: 2rem auto;
  max-width: 85%;
  border-radius: 12px;
  box-shadow: 
    0 4px 20px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(124, 58, 237, 0.1);
  border: 1px solid var(--border-color);
}

/* Article Header (for pages with header element) */
header {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(6, 182, 212, 0.1));
  border-bottom: 1px solid var(--border-color);
  padding: 2rem 1.5rem 1.5rem;
  text-align: center;
  backdrop-filter: blur(10px);
}

header h1 {
  margin-bottom: 0.5rem;
}

header p {
  color: var(--text-muted);
  margin: 0;
}

/* Article Footer */
footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

/* Reference/Source sections */
.reference,
.sources {
  font-size: 0.95rem;
  color: var(--text-muted);
  background: rgba(6, 182, 212, 0.08);
  border-left: 4px solid var(--accent-cyan);
  padding: 1.25rem 1.5rem;
  border-radius: 0 8px 8px 0;
  margin-top: 2rem;
}

.sources h3 {
  color: var(--accent-cyan);
  margin-top: 0;
}

.sources ul {
  margin-bottom: 0;
}

/* Code blocks */
code {
  background: rgba(124, 58, 237, 0.15);
  color: var(--accent-cyan);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: 'Fira Code', 'Monaco', monospace;
  font-size: 0.9em;
}

/* Spotlight entries (for spotlight pages) */
.spotlight-container {
  max-width: 1100px;
  margin: 2rem auto;
  padding: 2.5rem 4rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid var(--border-color);
}

.spotlight-entry {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.spotlight-entry:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.spotlight-entry h2,
.spotlight-entry h3 {
  color: var(--accent-cyan);
  border-bottom: none;
  margin-top: 0;
}

/* Main element for structured pages */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

main section {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 600px) {
  h1 {
    font-size: 1.65rem;
  }
  
  h2 {
    font-size: 1.25rem;
  }
  
  .img-section {
    gap: 1rem;
  }
  
  .img-block {
    flex: 1 1 100%;
    max-width: 100%;
  }
  
  table {
    font-size: 0.85rem;
  }
  
  th, td {
    padding: 0.6rem 0.5rem;
  }
}

/* Print styles */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  
  .article-nav {
    display: none;
  }
  
  .container,
  .article-container,
  .spotlight-container {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}