/**
 * ui-enhancements.css - Enhanced UI Styles for HassleFreebooks
 * =============================================================
 * This file contains enhanced CSS styles that improve the visual
 * appearance and user experience across the application.
 *
 * Features:
 * - Smooth transitions and animations
 * - Enhanced form styling with focus states
 * - Improved button interactions
 * - Card hover effects
 * - Loading animations
 * - Responsive improvements
 * - Modern visual effects (glassmorphism, gradients)
 * - Better typography and spacing
 *
 * @version 1.0.0
 */

/* ==========================================================================
   Enhanced Global Transitions
   ========================================================================== */

/* Smooth transitions for interactive elements */
* {
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

a,
button,
input,
textarea,
select,
.card,
.btn,
.form-control,
.nav__link {
  transition: all 0.3s ease;
}

/* ==========================================================================
   Enhanced Button Styles
   ========================================================================== */

/* Button hover effects with scale and shadow */
.btn {
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  pointer-events: none;
}

.btn:hover::before {
  width: 400px;
  height: 400px;
}

.btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3);
}

.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 8px rgba(13, 148, 136, 0.2);
}

/* Enhanced primary button gradient */
.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border: none;
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

/* Outline button enhancements */
.btn--outline {
  border-width: 2px;
  position: relative;
  z-index: 1;
}

.btn--outline::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-primary);
  z-index: -1;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  border-radius: inherit;
}

.btn--outline:hover::after {
  transform: scaleX(1);
}

/* ==========================================================================
   Enhanced Form Styles
   ========================================================================== */

/* Modern form control styling */
.form-control {
  border: 2px solid var(--color-border-strong);
  background-color: var(--color-surface);
  transition: all 0.3s ease;
}

.form-control:hover:not(:focus) {
  border-color: var(--color-text-muted);
  background-color: var(--color-surface-alt);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
  background-color: var(--color-surface);
  transform: translateY(-1px);
}

/* Floating label effect */
.form-group--floating {
  position: relative;
  margin-top: 1.5rem;
}

.form-group--floating .form-label {
  position: absolute;
  top: 50%;
  left: 1rem;
  transform: translateY(-50%);
  transition: all 0.3s ease;
  pointer-events: none;
  color: var(--color-text-secondary);
  background-color: var(--color-surface);
  padding: 0 0.25rem;
}

.form-group--floating .form-control:focus ~ .form-label,
.form-group--floating .form-control:not(:placeholder-shown) ~ .form-label {
  top: 0;
  font-size: 0.75rem;
  color: var(--color-primary);
  transform: translateY(-50%);
}

/* Enhanced checkbox and radio styling */
.form-check {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 2rem;
  cursor: pointer;
}

.form-check-input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.form-check-label {
  cursor: pointer;
  user-select: none;
}

.form-check-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--color-text-muted);
  background-color: var(--color-surface);
  transition: all 0.3s ease;
}

.form-check-input[type="checkbox"] ~ .form-check-label::before {
  border-radius: 0.25rem;
}

.form-check-input[type="radio"] ~ .form-check-label::before {
  border-radius: 50%;
}

.form-check-input:checked ~ .form-check-label::before {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-check-input[type="checkbox"]:checked ~ .form-check-label::after {
  content: '✓';
  position: absolute;
  left: 0.375rem;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-weight: bold;
}

.form-check-input[type="radio"]:checked ~ .form-check-label::after {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.375rem;
  height: 0.375rem;
  background-color: white;
  border-radius: 50%;
}

/* ==========================================================================
   Enhanced Card Styles
   ========================================================================== */

/* Card hover effects */
.card {
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::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;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* Card with gradient border on hover */
.card--gradient-border {
  position: relative;
  background: var(--color-surface);
}

.card--gradient-border::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent), var(--color-primary-light));
  border-radius: inherit;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card--gradient-border:hover::after {
  opacity: 1;
}

/* ==========================================================================
   Enhanced Table Styles
   ========================================================================== */

/* Modern table styling */
.table {
  border-collapse: separate;
  border-spacing: 0;
}

.table th {
  background-color: var(--color-surface-alt);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  position: sticky;
  top: 0;
  z-index: 10;
}

.table tbody tr {
  transition: all 0.2s ease;
}

.table tbody tr:hover {
  background-color: var(--color-primary-bg);
  transform: scale(1.01);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Sortable column headers */
th[data-sortable] {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: 2rem;
}

th[data-sortable]::after {
  content: '↕';
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
  transition: opacity 0.2s;
}

th[data-sortable]:hover::after {
  opacity: 1;
}

th[data-sortable].sorted-asc::after {
  content: '↑';
  opacity: 1;
  color: var(--color-primary);
}

th[data-sortable].sorted-desc::after {
  content: '↓';
  opacity: 1;
  color: var(--color-primary);
}

/* ==========================================================================
   Loading States and Animations
   ========================================================================== */

/* Enhanced skeleton loader */
.skeleton-shimmer {
  position: relative;
  overflow: hidden;
  background-color: var(--color-border);
}

.skeleton-shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0,
    rgba(255, 255, 255, 0.2) 20%,
    rgba(255, 255, 255, 0.5) 60%,
    rgba(255, 255, 255, 0)
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* Modern spinner */
.spinner-modern {
  width: 40px;
  height: 40px;
  position: relative;
}

.spinner-modern::before,
.spinner-modern::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: var(--color-primary);
}

.spinner-modern::before {
  animation: spin 1.2s linear infinite;
}

.spinner-modern::after {
  border-top-color: var(--color-primary-light);
  animation: spin 1.2s linear infinite 0.2s;
}

/* Pulse animation for badges/indicators */
.pulse-animation {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
    transform: scale(0.95);
  }
}

/* ==========================================================================
   Enhanced Navigation
   ========================================================================== */

/* Modern nav link hover effect */
.nav__link {
  position: relative;
  padding: 0.5rem 1rem;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 80%;
}

/* Enhanced dropdown */
.dropdown__menu {
  transform-origin: top;
  transform: scaleY(0);
  opacity: 0;
  transition: all 0.3s ease;
}

.dropdown__menu:not([hidden]) {
  transform: scaleY(1);
  opacity: 1;
}

/* ==========================================================================
   Notification Enhancements
   ========================================================================== */

/* Slide-in animation for notifications */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

.notification--slide-in {
  animation: slideInRight 0.3s ease-out;
}

.notification--slide-out {
  animation: slideOutRight 0.3s ease-in;
}

.notification-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1070;
  pointer-events: none;
}

.notification {
  pointer-events: all;
  margin-bottom: 1rem;
  min-width: 300px;
  max-width: 500px;
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  background-color: var(--color-surface);
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.notification__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-right: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: bold;
}

.notification--success .notification__icon {
  background-color: var(--color-success);
  color: white;
}

.notification--error .notification__icon {
  background-color: var(--color-danger);
  color: white;
}

.notification--warning .notification__icon {
  background-color: var(--color-warning);
  color: white;
}

.notification--info .notification__icon {
  background-color: var(--color-info);
  color: white;
}

.notification__message {
  flex: 1;
  margin-right: 1rem;
}

.notification__close {
  flex-shrink: 0;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.notification__close:hover {
  color: var(--color-text);
}

/* ==========================================================================
   Modal Enhancements
   ========================================================================== */

/* Enhanced modal backdrop */
.modal__backdrop {
  backdrop-filter: blur(4px);
  background-color: rgba(0, 0, 0, 0.6);
}

/* Modal content animation */
@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal--open .modal__content {
  animation: modalSlideIn 0.3s ease-out;
}

/* ==========================================================================
   Focus States and Accessibility
   ========================================================================== */

/* Enhanced focus outline */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 0.25rem;
}

/* Keyboard navigation indicator */
.keyboard-nav *:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(13, 148, 136, 0.1);
}

/* Skip link enhancements */
.skip-link:focus {
  top: 1rem;
  left: 1rem;
  z-index: 9999;
  padding: 1rem 1.5rem;
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Responsive Enhancements
   ========================================================================== */

/* Improved mobile interactions */
@media (max-width: 768px) {
  /* Larger touch targets */
  .btn,
  .form-control,
  .nav__link {
    min-height: 48px;
    padding: 0.75rem 1rem;
  }

  /* Stack form elements on mobile */
  .form-row {
    flex-direction: column;
  }

  .form-row > * {
    margin-bottom: 1rem;
  }

  /* Responsive table improvements */
  .table-wrapper {
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    overflow: hidden;
  }

  .table--responsive thead {
    display: none;
  }

  .table--responsive tr {
    display: block;
    border: 1px solid var(--color-border);
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    overflow: hidden;
  }

  .table--responsive td {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    border-top: 1px solid var(--color-surface-alt);
  }

  .table--responsive td::before {
    content: attr(data-label);
    font-weight: 600;
    margin-right: 1rem;
  }
}

/* ==========================================================================
   Utility Enhancements
   ========================================================================== */

/* Text gradient utility */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glassmorphism utility */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Shadow utilities */
.shadow-colored {
  box-shadow: 0 10px 25px -5px rgba(13, 148, 136, 0.25);
}

.shadow-glow {
  box-shadow: 0 0 30px rgba(13, 148, 136, 0.3);
}

/* Hover lift effect */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   Page Load Animations
   ========================================================================== */

/* Stagger load animation */
[data-stagger-load] {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

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

/* Page loaded state */
body.page-loaded {
  opacity: 1;
}

body:not(.page-loaded) {
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Animation ready state */
body.animations-ready * {
  animation-play-state: running !important;
}

body:not(.animations-ready) * {
  animation-play-state: paused !important;
}

/* ==========================================================================
   Performance Optimizations
   ========================================================================== */

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Hardware acceleration for transforms */
.card,
.btn,
.modal__content {
  will-change: transform;
}

/* ==========================================================================
   Dark Mode Support (Future Enhancement)
   ========================================================================== */

[data-theme="dark"] {
  /* Dark mode color overrides would go here */
}