/* Modern Aikido Library Styles */
:root {
  /* Color Palette */
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --light-gray: #ecf0f1;
  --medium-gray: #bdc3c7;
  --dark-gray: #34495e;
  --white: #ffffff;
  --black: #2c3e50;
  
  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-accent: 'Playfair Display', serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
    /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--black);
  background-color: var(--white);
  font-weight: 400;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-accent);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--dark-gray);
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Layout Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Modern Header */
.modern-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-gray) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  width: 100%;
  min-width: 0; /* Allow shrinking */
}

.logo-modern {
  display: flex;
  align-items: center;
  font-family: var(--font-accent);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.logo-modern:hover {
  color: var(--white);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  margin-right: var(--spacing-sm);
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
}

/* Modern Navigation */
.nav-container {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: flex-end;
  min-width: 0; /* Allow shrinking */
}

.nav-modern {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  align-items: center;
}

.nav-modern a {
  color: var(--white);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.nav-modern a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-2px);
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: var(--white);
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Hamburger animation */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Prevent body scroll when mobile menu is open */
body.mobile-menu-open {
  overflow: hidden;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--dark-gray);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* Main Content Layout */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-xxl);
  padding: var(--spacing-xxl) 0;
  min-height: calc(100vh - 200px);
}

.content-area {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

/* Modern Sidebar */
.sidebar-modern {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  height: fit-content;
  position: sticky;
  top: calc(80px + var(--spacing-md));
}

.search-modern {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: border-color var(--transition-normal);
  margin-bottom: var(--spacing-xl);
}

.search-modern:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.menu-section {
  margin-bottom: var(--spacing-xl);
}

.menu-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--light-gray);
}

.menu-list {
  list-style: none;
}

.menu-item {
  margin-bottom: var(--spacing-sm);
}

.menu-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--dark-gray);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  font-weight: 500;
}

.menu-link:hover {
  background-color: var(--light-gray);
  color: var(--primary-color);
  text-decoration: none;
  transform: translateX(5px);
}

/* Card Components */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.card-content {
  color: var(--dark-gray);
  line-height: 1.7;
}

/* Library Grid */
.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.library-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  border-left: 4px solid var(--secondary-color);
}

.library-item-clickable {
  cursor: pointer;
}

.library-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-left-color: var(--accent-color);
}

.library-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.chapter-list {
  list-style: none;
}

.chapter-item {
  margin-bottom: var(--spacing-sm);
}

.chapter-link {
  display: block;
  padding: var(--spacing-sm);
  color: var(--dark-gray);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.chapter-link:hover {
  background-color: var(--light-gray);
  color: var(--primary-color);
  text-decoration: none;
  padding-left: var(--spacing-md);
}

/* Playlists */
.playlist-selector {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background-color: var(--white);
  margin-bottom: var(--spacing-xl);
  transition: border-color var(--transition-normal);
}

.playlist-selector:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.track-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.track-item {
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  animation: fadeInUp 0.4s ease-out forwards;
}

.modal-body .track-item {
  padding: 0;
  background-color: transparent;
}

.modal-body .track-link {
  display: block;
  padding: var(--spacing-md);
  background-color: var(--light-gray);
  border-radius: var(--radius-md);
  color: var(--dark-gray);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.modal-body .track-link:hover {
  background-color: var(--secondary-color);
  color: var(--white);
  transform: translateX(5px);
}

/* Legacy track styles for other pages */
.track-item:not(.modal-body .track-item) {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background-color: var(--light-gray);
  transition: all var(--transition-normal);
}

.track-item:not(.modal-body .track-item):hover {
  background-color: var(--medium-gray);
  transform: translateX(5px);
}

.track-link {
  color: var(--primary-color);
  font-weight: 500;
  font-size: 1.1rem;
}

.track-link:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

.playlist-tile {
  position: relative;
  overflow: hidden;
}

.playlist-tile:hover {
  cursor: pointer;
}

.playlist-track-count {
  color: var(--medium-gray);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.playlist-preview {
  margin-top: var(--spacing-sm);
}

.preview-text {
  font-style: italic;
  color: var(--dark-gray);
  font-size: 0.9rem;
}

/* Modal */
.modal {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: var(--white);
  margin: 5% auto;
  padding: 0;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.modal-header {
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
}

.close {
  color: var(--white);
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
  transition: opacity var(--transition-normal);
}

.close:hover {
  opacity: 0.7;
}

.modal-body {
  padding: var(--spacing-lg);
  max-height: 60vh;
  overflow-y: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-color);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-2px);
}

/* Footer */
.footer-modern {
  background-color: var(--primary-color);
  color: var(--white);
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xxl);
}

.footer-content {
  color: var(--medium-gray);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in-up-delay {
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

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

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid var(--light-gray);
  border-top: 2px solid var(--secondary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  transform: translate(-50%, -50%);
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Desktop Navigation - ensure both buttons are visible */
@media (min-width: 769px) {
  .nav-modern {
    display: flex !important;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    align-items: center;
  }
  
  .nav-container {
    position: relative;
    flex: 1;
    display: flex;
    justify-content: flex-end;
    min-width: 0;
  }
  
  .mobile-menu-toggle {
    display: none;
  }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0; /* Reduced from --spacing-xxl */
  }
  
  .sidebar-modern {
    order: -1;
    position: static;
    padding: var(--spacing-md); /* Reduced padding */
  }
  
  .content-area {
    padding: var(--spacing-md); /* Reduced padding */
  }
  
  /* Compact header for mobile */
  .header-content {
    padding: var(--spacing-sm) 0; /* Reduced from --spacing-md */
    position: relative;
  }
  
  .logo-modern {
    font-size: 1.25rem; /* Smaller logo */
  }
  
  .logo-icon {
    width: 32px; /* Smaller icon */
    height: 32px;
    font-size: 1rem;
  }
    /* Show mobile menu toggle */
  .mobile-menu-toggle {
    display: flex;
  }
    /* Hide desktop navigation and make it a dropdown */
  .nav-modern {
    display: none !important; /* Hide desktop nav by default on mobile - use !important for specificity */
  }
  
  .nav-container {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-color);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    max-height: 0;
    overflow: hidden;
    flex: none; /* Reset desktop flex properties */
  }
  .nav-container.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    max-height: 500px; /* Increased to accommodate all menu items */
  }
    .nav-container.active .nav-modern {
    display: flex !important; /* Show nav when menu is active - use !important for specificity */
    flex-direction: column;
    gap: 0;
    width: 100%;
    padding: var(--spacing-md) 0;
  }
  
  .nav-modern li {
    width: 100%;
    transform: translateX(-20px);
    opacity: 0;
    transition: all 0.3s ease;
  }
  
  .nav-container.active .nav-modern li {
    transform: translateX(0);
    opacity: 1;
  }
  
  /* Stagger the animation */
  .nav-container.active .nav-modern li:nth-child(1) { transition-delay: 0.1s; }
  .nav-container.active .nav-modern li:nth-child(2) { transition-delay: 0.15s; }
  .nav-container.active .nav-modern li:nth-child(3) { transition-delay: 0.2s; }
  .nav-container.active .nav-modern li:nth-child(4) { transition-delay: 0.25s; }
  .nav-container.active .nav-modern li:nth-child(5) { transition-delay: 0.3s; }
  .nav-container.active .nav-modern li:nth-child(6) { transition-delay: 0.35s; }
  .nav-container.active .nav-modern li:nth-child(7) { transition-delay: 0.4s; }
  
  .nav-modern a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    text-align: left;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
  }
  
  /* Enhanced button styling for mobile */
  .nav-modern .btn {
    margin: var(--spacing-xs) var(--spacing-lg);
    padding: var(--spacing-md);
    text-align: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    min-height: 44px; /* Ensure proper touch target size */
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .nav-modern a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
    padding-left: calc(var(--spacing-lg) + 5px);
  }
  
  /* Button hover states on mobile */
  .nav-modern .btn:hover {
    transform: translateX(0); /* Override the translateX for buttons */
    padding-left: var(--spacing-md); /* Keep original padding */
  }
  
  .nav-modern .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
  }
  
  .nav-modern .btn-primary:hover {
    background-color: rgba(52, 152, 219, 0.8);
  }
  
  .nav-modern li:last-child a {
    border-bottom: none;
  }
  
  /* Compact hero section for mobile */
  .hero-section {
    padding: var(--spacing-lg) 0; /* Significantly reduced from --spacing-xxl */
  }
  
  .hero-title {
    font-size: 1.75rem; /* Smaller hero title */
    margin-bottom: var(--spacing-sm); /* Reduced margin */
  }
  
  .hero-subtitle {
    font-size: 1rem; /* Smaller subtitle */
    margin-bottom: var(--spacing-md); /* Reduced margin */
  }
  
  .library-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md); /* Reduced grid gap */
  }
  
  /* Compact typography */
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  h4 { font-size: 1.1rem; }
  
  /* Ensure header doesn't take too much space */
  .modern-header {
    min-height: auto;
  }
  
  /* Make sure the main content area is easily accessible */
  .main-layout {
    min-height: calc(100vh - 120px); /* Adjust based on header height */
  }
  
  /* Improve touch targets */
  .nav-modern a,
  .menu-link,
  .btn {
    min-height: 44px; /* Apple recommended touch target size */
    display: flex;
    align-items: center;
  }
  
  /* Enhance sidebar for mobile when shown */
  .sidebar-modern {
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
  }
}

/* Extra mobile optimizations for small screens */
@media (max-width: 360px) {
  .hero-section {
    padding: var(--spacing-sm) 0; /* Minimal padding for very small screens */
  }
  
  .hero-title {
    font-size: 1.25rem;
    margin-bottom: 0;
  }
  
  .hero-subtitle {
    font-size: 0.8rem;
    margin-bottom: var(--spacing-xs);
  }
  
  .header-content {
    padding: var(--spacing-xs) 0;
  }
  
  .main-layout {
    padding: var(--spacing-sm) 0;
  }
  
  /* Ultra-compact spacing */
  .container {
    padding: 0 var(--spacing-xs);
  }
  
  /* Minimal header height */
  .header-content {
    padding: var(--spacing-xs) 0;
  }
  
  /* Smaller mobile menu items */
  .nav-modern a {
    padding: var(--spacing-sm);
    font-size: 0.85rem;
  }
}

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

/* Focus States */
.btn:focus,
.search-modern:focus,
.playlist-selector:focus {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #000000;
    --secondary-color: #0066cc;
    --light-gray: #ffffff;
    --dark-gray: #000000;
  }
}