/* Delightful Interactions - Minimal & Elegant */

/* Navigation Links - Apply to LI elements */
nav ul li {
  position: relative !important;
  transition: all var(--transition-fast) !important;
  background-color: transparent !important;
  border: none !important;
  outline: none !important;
  overflow: visible !important;
}

nav ul li:after {
  content: '' !important;
  position: absolute !important;
  bottom: -2px !important;
  left: 0 !important;
  width: 0 !important;
  height: 2px !important;
  background: var(--color-accent) !important;
  transition: width var(--transition-smooth) !important;
  z-index: 1 !important;
}

nav ul li:hover {
  background-color: transparent !important;
  border: none !important;
  outline: none !important;
}

nav ul li:hover:after {
  width: 100% !important;
}

nav ul li:hover a {
  color: var(--color-accent) !important;
  background-color: transparent !important;
  border: none !important;
  outline: none !important;
  text-decoration: none !important;
}

/* Pressed state for navigation links */
nav ul li:active {
  transform: scale(0.95) translateY(1px) !important;
  transition: transform 0.1s ease-out !important;
  background-color: transparent !important;
  box-shadow: none !important;
  border: none !important;
  outline: none !important;
}

/* Ensure parent containers allow overflow for pseudo-elements */
nav ul {
  overflow: visible !important;
}

/* CSS Custom Properties for consistent theming */
:root {
  --transition-fast: 0.15s ease-out;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
  --color-accent: #007bff;
  --color-accent-hover: #0056b3;
}

/* Page Transition System */
.page-transition {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.page-transition.loaded {
  opacity: 1;
  transform: translateY(0);
}

/* Smooth scrolling for anchor links */
html {
  scroll-behavior: smooth;
}

/* Reading Progress Bar */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #000000, #333333);
  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* AGGRESSIVE LINK OVERRIDES - Force our styles to work */

/* All links base styles */
a {
  position: relative !important;
  transition: color var(--transition-fast) !important;
  text-decoration: none !important;
}

/* Text links - permanent underline + animated blue line on hover */
a:not(.no-underline):not(nav a):not(.link.black-90):not(a.link.black-90.pa1.ph2.bw1) {
  text-decoration: underline !important;
  text-decoration-color: #ccc !important;
  text-underline-offset: 2px !important;
  position: relative !important;
}

a:not(.no-underline):not(nav a):not(.link.black-90):not(a.link.black-90.pa1.ph2.bw1):after {
  content: '' !important;
  position: absolute !important;
  bottom: 2px !important; /* Match the text-underline-offset */
  left: 0 !important;
  width: 0 !important;
  height: 2px !important;
  background: var(--color-accent) !important;
  transition: width var(--transition-smooth) !important;
  z-index: 2 !important; /* Higher z-index to overlay the gray underline */
}

a:not(.no-underline):not(nav a):not(.link.black-90):not(a.link.black-90.pa1.ph2.bw1):hover:after {
  width: 100% !important;
}

/* Pressed state for text links - color change only */
a:not(.no-underline):not(nav a):not(.link.black-90):not(a.link.black-90.pa1.ph2.bw1):active {
  color: var(--color-accent-hover) !important;
  transition: color 0.1s ease-out !important;
}


/* Fallback selectors for broader compatibility */
.link.black-90:after {
  content: '' !important;
  position: absolute !important;
  bottom: -2px !important;
  left: 0 !important;
  width: 0 !important;
  height: 2px !important;
  background: var(--color-accent) !important;
  transition: width var(--transition-smooth) !important;
  z-index: 1 !important;
}

.link.black-90:hover:after {
  width: 100% !important;
}

/* AGGRESSIVE HOVER AND STATE OVERRIDES */

/* All links turn blue on hover */
a:hover,
nav a:hover,
.link.black-90:hover,
nav ul li a:hover,
nav ul li a.link.black-90:hover {
  color: var(--color-accent) !important;
  text-decoration: none !important;
  background-color: transparent !important;
  box-shadow: none !important;
  border: none !important;
  border-top: none !important;
  border-bottom: none !important;
  outline: none !important;
}

/* Remove all unwanted effects from all link states */
a, a:hover, a:active, a:focus,
nav a, nav a:hover, nav a:active, nav a:focus,
.link.black-90, .link.black-90:hover, .link.black-90:active, .link.black-90:focus,
nav ul li a, nav ul li a:hover, nav ul li a:active, nav ul li a:focus {
  background-color: transparent !important;
  box-shadow: none !important;
  border: none !important;
  border-top: none !important;
  border-bottom: none !important;
  border-left: none !important;
  border-right: none !important;
  text-decoration: none !important;
  outline: none !important;
}

/* Remove focus rings and frames from all interactive elements */
*:focus,
*:active,
button:focus,
button:active,
a:focus,
a:active {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

/* Only show focus ring for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--color-accent) !important;
  outline-offset: 2px !important;
}

/* Card Hover Effects */
.card, .post-card, .book-card {
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  cursor: pointer;
}

.card:hover, .post-card:hover, .book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* Index Page Specific Interactions */
.hero-section {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out forwards;
}

.hero-section:nth-child(2) { animation-delay: 0.2s; }
.hero-section:nth-child(3) { animation-delay: 0.4s; }
.hero-section:nth-child(4) { animation-delay: 0.6s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Principle Cards Animation */
.principle-card {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
}

.principle-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Library Page Enhancements */
.book-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)) !important;
  gap: 1.5rem !important;
  margin: 2rem 0 !important;
  width: 100% !important;
}

.book-item {
  display: block !important;
  transition: all var(--transition-smooth) !important;
  width: 100% !important;
  max-width: none !important;
}

.book-item .book-card {
  background: white !important;
  border-radius: 8px !important;
  padding: 1.5rem !important;
  border: 1px solid #f0f0f0 !important;
  box-shadow: var(--shadow-subtle) !important;
  transition: all var(--transition-smooth) !important;
}

.book-item:hover .book-card {
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-hover) !important;
  border-color: var(--color-accent) !important;
}

.book-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #333;
  transition: color var(--transition-fast);
}

.book-item:hover .book-title {
  color: var(--color-accent);
}

.book-author {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.book-description {
  color: #555;
  font-size: 0.85rem;
  line-height: 1.5;
}

/* Qualification Grid Animation */
.qualification-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.qualification-item {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 6px;
  text-align: center;
  transition: all var(--transition-smooth);
  border: 2px solid transparent;
}

.qualification-item:hover {
  background: white;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-subtle);
}

/* Mark Highlight Animation - Remove old yellow hover */
mark {
  background: transparent;
  padding: 0.1em 0.2em;
  border-radius: 3px;
  transition: all var(--transition-smooth);
}

mark:hover {
  background: transparent;
  color: var(--color-accent);
}

/* Button Interactions */
.btn, button {
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn:before, button:before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover:before, button:hover:before {
  left: 100%;
}

/* Smooth Focus States */
*:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .book-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .qualification-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
  
  .hero-section {
    transform: translateY(15px);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Simple Press States */
a:active {
  transform: scale(0.98);
  transition: transform var(--transition-fast);
}

/* Card press effects */
.book-item:active, .book-item:active .book-card,
.qualification-item:active,
.card:active, .post-card:active {
  transform: scale(0.95) translateY(2px);
  transition: transform var(--transition-fast);
}

/* Remove any yellow highlight utility classes if present */
.bg-yellow, .hover-bg-yellow:hover { 
  background-color: transparent !important; 
}

/* Remove top/bottom stroke/borders on links (especially nav/header) */
nav a, nav a:hover, nav a:focus,
.link, .link:hover, .link:focus,
.header a, .header a:hover, .header a:focus {
  border: none !important;
  border-top: none !important;
  border-bottom: none !important;
  box-shadow: none !important;
  text-decoration: none !important;
}

/* Disable custom underline effect on nav links entirely */
nav a:after { display: none !important; }

/* Make hover appearance animated (color, border, shadow) */
a {
  transition: color var(--transition-smooth),
              border-color var(--transition-smooth),
              box-shadow var(--transition-smooth),
              background-color var(--transition-smooth);
}

/* Ensure underline animation is smooth on content links */
a:not(.no-underline):after {
  transition: width var(--transition-smooth), background-color var(--transition-smooth);
}