/* ==========================================================================
   Dr. Andrew Theme - Health & Science Aesthetic
   ========================================================================== */

:root {
  /* Primary Colors - Deep Navy #0A1D37 */
  --color-primary: #0A1D37;
  --color-primary-dark: #061224;
  --color-primary-light: #1a3a5c;
  --color-accent: #3b82f6;
  --color-secondary: #1e40af;

  /* Text Colors - High contrast */
  --color-text: #0A1D37;
  --color-text-secondary: #1e3a5c;
  --color-text-muted: #475569;

  /* Backgrounds */
  --color-bg: #ffffff;
  --color-bg-alt: #f0f4f8;
  --color-bg-elevated: #ffffff;
  --color-surface: #e1e8f0;
  --color-border: #94a3b8;
  --color-border-light: #cbd5e1;
}

/* Dark Mode */
[data-theme="dr-andrew"].dark,
.dark[data-theme="dr-andrew"] {
  --color-bg: #0A1D37;
  --color-bg-alt: #0f2847;
  --color-bg-elevated: #1a3a5c;
  --color-surface: #1e40af;
  --color-border: #3b5998;
  --color-border-light: #1a3a5c;
  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
}

/* Hero Section - Deep Navy */
.hero {
  background: linear-gradient(135deg, #0A1D37 0%, #1a3a5c 50%, #1e40af 100%);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero__title {
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

/* Categories Bar */
.categories-bar {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.categories-bar__item.is-active,
.categories-bar__item:hover {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-color: transparent;
}

/* Post Cards - Clean Medical Style */
.post-card {
  border: 1px solid var(--color-border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.post-card:hover {
  border-color: var(--color-primary);
  box-shadow:
    0 20px 25px -5px rgba(10, 29, 55, 0.15),
    0 8px 10px -6px rgba(10, 29, 55, 0.1);
}

.post-card__category {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* Sidebar Widgets */
.sidebar__widget {
  border-color: var(--color-border);
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg-alt) 100%);
}

.sidebar__widget-title {
  border-bottom-color: var(--color-primary);
  position: relative;
}

.sidebar__widget-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 30px;
  height: 2px;
  background: var(--color-accent);
}

/* Article Styling */
.article__header {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.article__category {
  background: linear-gradient(135deg, rgba(10, 29, 55, 0.1) 0%, rgba(30, 64, 175, 0.1) 100%);
  color: var(--color-primary);
}

.article__content blockquote {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, rgba(10, 29, 55, 0.05) 100%);
  border-left-color: var(--color-primary);
}

.article__content blockquote::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--color-primary);
  opacity: 0.2;
  font-family: Georgia, serif;
}

/* Video Container - Special Styling */
.article__video-container {
  border: 3px solid var(--color-primary);
  box-shadow:
    0 0 0 6px rgba(10, 29, 55, 0.1),
    0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Share Buttons */
.article__share {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, rgba(10, 29, 55, 0.05) 100%);
  border: 1px solid var(--color-border);
}

/* Tags */
.article__tag {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
}

.article__tag:hover {
  background: linear-gradient(135deg, rgba(10, 29, 55, 0.1) 0%, rgba(30, 64, 175, 0.1) 100%);
  border-color: var(--color-primary);
}

/* Related Posts */
.related-posts {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

/* Category Cards */
.category-card {
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg-alt) 100%);
  border: 1px solid var(--color-border);
}

.category-card:hover {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, rgba(10, 29, 55, 0.05) 100%);
}

.category-card__icon {
  background: linear-gradient(135deg, rgba(10, 29, 55, 0.1) 0%, rgba(30, 64, 175, 0.1) 100%);
}

/* Footer */
.footer {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, #e1e8f0 100%);
}

.dark .footer {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, #0A1D37 100%);
}

/* Pagination */
.pagination__number--active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* Search Header */
.search-header__input-wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 29, 55, 0.15);
}

/* About Features */
.about-feature__icon {
  background: linear-gradient(135deg, rgba(10, 29, 55, 0.1) 0%, rgba(30, 64, 175, 0.1) 100%);
}

/* Error Page */
.error-content__code {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Reading Progress Bar */
.reading-progress {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* Selection */
::selection {
  background-color: rgba(10, 29, 55, 0.3);
  color: var(--color-text);
}

/* Links in content */
.article__content a {
  color: var(--color-primary);
  text-decoration-color: rgba(10, 29, 55, 0.3);
  transition: all 0.2s ease;
}

.article__content a:hover {
  color: var(--color-primary-dark);
  text-decoration-color: var(--color-primary);
}

/* Special Health/Science Elements */
.health-tip {
  padding: var(--space-5);
  background: linear-gradient(135deg, rgba(10, 29, 55, 0.08) 0%, rgba(30, 64, 175, 0.08) 100%);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-6) 0;
}

.health-tip::before {
  content: '💡';
  margin-right: var(--space-2);
}

.warning-box {
  padding: var(--space-5);
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.1) 0%, rgba(239, 68, 68, 0.1) 100%);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-6) 0;
}

.warning-box::before {
  content: '⚠️';
  margin-right: var(--space-2);
}

/* Animations */
@keyframes pulse-blue {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(10, 29, 55, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(10, 29, 55, 0);
  }
}

.post-card--featured:hover {
  animation: pulse-blue 2s infinite;
}

/* Header Enhancement */
.header {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 244, 248, 0.95) 100%);
}

.dark .header {
  background: linear-gradient(180deg, rgba(10, 29, 55, 0.98) 0%, rgba(15, 40, 71, 0.95) 100%);
}

.header__nav-link:hover,
.header__nav-link.is-active {
  background-color: var(--color-surface);
}

/* View All Posts Button */
.view-all-posts {
  display: flex;
  justify-content: center;
  margin-top: var(--space-10);
  padding-top: var(--space-8);
}

.view-all-posts__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(10, 29, 55, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.view-all-posts__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(10, 29, 55, 0.4);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.view-all-posts__btn svg {
  transition: transform 0.3s ease;
}

.view-all-posts__btn:hover svg {
  transform: translateX(4px);
}

/* Mobile Enhancements */
@media (max-width: 768px) {
  .hero {
    background: linear-gradient(180deg, #0A1D37 0%, #1e40af 100%);
  }

  .view-all-posts__btn {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
  }
}