/* ============================================= */
/* LingoXpress Redesign CSS                     */
/* Educational/Friendly + Minimalist Style      */
/* Accent Color: #db545a (rgb(219, 84, 90))     */
/* ============================================= */

/* -------------------------------------------------------------------------- */
/*                              CSS Variables                                  */
/* -------------------------------------------------------------------------- */

:root {
  /* Brand Colors - Primary accent preserved */
  --lx-primary: #db545a;
  --lx-primary-rgb: 219, 84, 90;
  --lx-primary-light: rgba(219, 84, 90, 0.1);
  --lx-primary-lighter: rgba(219, 84, 90, 0.05);
  --lx-primary-dark: #c14850;

  /* Secondary - Navy blue for headings */
  --lx-secondary: #002147;
  --lx-secondary-rgb: 0, 33, 71;

  /* Functional Colors */
  --lx-success: #79B93C;
  --lx-info: #00B2B2;
  --lx-warning: #F17228;
  --lx-danger: #EE4D47;

  /* Neutrals */
  --lx-white: #FFFEFE;
  --lx-gray-50: #F8F9FA;
  --lx-gray-100: #F0F4F9;
  --lx-gray-200: #E9ECEF;
  --lx-gray-300: #DEE2E6;
  --lx-gray-400: #CED4DA;
  --lx-gray-500: #ADB5BD;
  --lx-gray-600: #6C757D;
  --lx-gray-700: #495057;
  --lx-gray-800: #343A40;
  --lx-gray-900: #212529;

  /* Text Colors */
  --lx-text-primary: #402B2B;
  --lx-text-secondary: #6C757D;
  --lx-text-muted: #ADB5BD;

  /* Background */
  --lx-bg-body: #FFFEFE;
  --lx-bg-surface: #F8F9FA;
  --lx-bg-elevated: #FFFFFF;

  /* Typography */
  --lx-font-heading: 'DM Serif Display', Georgia, serif;
  --lx-font-body: 'Rubik', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing Scale (8px base) */
  --lx-space-1: 0.25rem;   /* 4px */
  --lx-space-2: 0.5rem;    /* 8px */
  --lx-space-3: 1rem;      /* 16px */
  --lx-space-4: 1.5rem;    /* 24px */
  --lx-space-5: 2rem;      /* 32px */
  --lx-space-6: 3rem;      /* 48px */
  --lx-space-7: 4rem;      /* 64px */
  --lx-space-8: 6rem;      /* 96px */

  /* Border Radius */
  --lx-radius-sm: 0.375rem;
  --lx-radius-md: 0.5rem;
  --lx-radius-lg: 1rem;
  --lx-radius-xl: 1.5rem;
  --lx-radius-full: 50%;

  /* Shadows - Soft for friendly feel */
  --lx-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --lx-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --lx-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --lx-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --lx-transition-fast: 150ms ease;
  --lx-transition-base: 200ms ease;
  --lx-transition-slow: 300ms ease;
}

/* -------------------------------------------------------------------------- */
/*                              Base Overrides                                 */
/* -------------------------------------------------------------------------- */

body {
  font-family: var(--lx-font-body);
  color: var(--lx-text-primary);
  background-color: var(--lx-bg-body);
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--lx-font-heading);
  color: var(--lx-secondary);
}

/* -------------------------------------------------------------------------- */
/*                              Layout Utilities                               */
/* -------------------------------------------------------------------------- */

.bg-gradient-light {
  background: linear-gradient(180deg, var(--lx-gray-50) 0%, var(--lx-white) 100%);
}

.bg-primary-subtle {
  background-color: var(--lx-primary-light) !important;
}

.bg-success-subtle {
  background-color: rgba(121, 185, 60, 0.1) !important;
}

.bg-info-subtle {
  background-color: rgba(0, 178, 178, 0.1) !important;
}

.bg-warning-subtle {
  background-color: rgba(241, 114, 40, 0.1) !important;
}

/* -------------------------------------------------------------------------- */
/*                              Top Bar                                        */
/* -------------------------------------------------------------------------- */

.top-bar {
  font-size: 0.875rem;
}

.top-bar a,
.top-bar a.text-900 {
  color: #fff !important; /* Override text-900 for accessibility on primary bg */
  text-decoration: none;
  transition: color var(--lx-transition-fast);
}

.top-bar a:hover {
  color: #fff !important;
  text-decoration: underline;
}

/* -------------------------------------------------------------------------- */
/*                              Language Switcher                              */
/* -------------------------------------------------------------------------- */

.language-switcher .dropdown-toggle {
  font-size: 0.875rem;
  font-weight: 500;
  color: #fff !important; /* Full white for WCAG AA compliance on primary bg */
}

.language-switcher .dropdown-toggle:hover {
  color: #fff !important;
  text-decoration: underline;
}

.language-switcher .dropdown-menu {
  min-width: 180px;
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--lx-gray-200);
  box-shadow: var(--lx-shadow-lg);
  border-radius: var(--lx-radius-md);
  background-color: #fff !important; /* Force white background */
  z-index: 1050 !important; /* Above sticky navbar (1030) */
}

.language-switcher .dropdown-item {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  color: var(--lx-text-primary) !important; /* Dark text for contrast */
  background-color: #fff !important;
  transition: background-color var(--lx-transition-fast);
}

.language-switcher .dropdown-item:hover {
  background-color: var(--lx-gray-100) !important;
  color: var(--lx-primary) !important;
}

.language-switcher .dropdown-item.active {
  background-color: var(--lx-primary-light) !important;
  color: var(--lx-primary) !important;
}

/* -------------------------------------------------------------------------- */
/*                              Navigation                                     */
/* -------------------------------------------------------------------------- */

.navbar {
  box-shadow: var(--lx-shadow-sm);
  background-color: var(--lx-white) !important;
}

.navbar-brand img {
  transition: transform var(--lx-transition-base);
}

.navbar-brand:hover img {
  transform: scale(1.02);
}

.nav-link {
  font-weight: 500;
  color: var(--lx-text-primary) !important;
  transition: color var(--lx-transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--lx-primary) !important;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background-color: var(--lx-primary);
  border-radius: 3px;
}

/* -------------------------------------------------------------------------- */
/*                              Hero Search                                    */
/* -------------------------------------------------------------------------- */

.hero-search {
  background: linear-gradient(135deg, var(--lx-gray-50) 0%, var(--lx-white) 50%, var(--lx-primary-lighter) 100%);
  position: relative;
  overflow: hidden;
}

.hero-search::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 150%;
  background: radial-gradient(ellipse, var(--lx-primary-lighter) 0%, transparent 70%);
  pointer-events: none;
}

.hero-image {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-search-card {
  background: var(--lx-white);
  border-radius: var(--lx-radius-xl);
  box-shadow: var(--lx-shadow-xl);
  position: relative;
  z-index: 1;
}

.hero-search-form .form-select {
  border: 2px solid var(--lx-gray-200);
  border-radius: var(--lx-radius-md);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: border-color var(--lx-transition-fast), box-shadow var(--lx-transition-fast);
}

.hero-search-form .form-select:focus {
  border-color: var(--lx-primary);
  box-shadow: 0 0 0 3px var(--lx-primary-light);
}

.hero-search-form .btn-primary {
  background: var(--lx-primary);
  border: none;
  font-weight: 600;
  transition: transform var(--lx-transition-fast), box-shadow var(--lx-transition-fast);
}

.hero-search-form .btn-primary:hover {
  background: var(--lx-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--lx-shadow-lg);
}

.search-label {
  font-weight: 500;
  color: var(--lx-text-secondary);
}

/* -------------------------------------------------------------------------- */
/*                              Book Cards                                     */
/* -------------------------------------------------------------------------- */

.book-card {
  border-radius: var(--lx-radius-lg);
  overflow: hidden;
  transition: transform var(--lx-transition-base), box-shadow var(--lx-transition-base);
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--lx-shadow-lg);
}

.book-card .card-img-wrapper {
  background: var(--lx-gray-100);
  aspect-ratio: 2/3;
}

.book-card .book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--lx-transition-slow);
}

.book-card:hover .book-cover {
  transform: scale(1.05);
}

.book-card .format-badges .badge {
  font-size: 0.65rem;
  padding: 0.35em 0.5em;
}

.book-card .card-title {
  font-family: var(--lx-font-body);
  font-size: 0.875rem;
  line-height: 1.4;
}

.text-truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Hover lift effect */
.hover-lift {
  transition: transform var(--lx-transition-base), box-shadow var(--lx-transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--lx-shadow-lg);
}

/* -------------------------------------------------------------------------- */
/*                              Feature Cards                                  */
/* -------------------------------------------------------------------------- */

.feature-card {
  transition: transform var(--lx-transition-base), box-shadow var(--lx-transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--lx-shadow-lg);
}

.feature-icon {
  transition: transform var(--lx-transition-base);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

/* -------------------------------------------------------------------------- */
/*                              Search Page                                    */
/* -------------------------------------------------------------------------- */

.search-header {
  background: linear-gradient(180deg, var(--lx-gray-50) 0%, var(--lx-white) 100%);
}

.search-form {
  border-radius: var(--lx-radius-xl);
}

.search-form .form-select,
.search-form .form-control {
  border: 2px solid var(--lx-gray-200);
  border-radius: var(--lx-radius-md);
}

.search-form .form-select:focus,
.search-form .form-control:focus {
  border-color: var(--lx-primary);
  box-shadow: 0 0 0 3px var(--lx-primary-light);
}

.no-results {
  min-height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* -------------------------------------------------------------------------- */
/*                              Resource Detail                                */
/* -------------------------------------------------------------------------- */

.resource-detail .book-cover-wrapper img {
  border-radius: var(--lx-radius-lg);
}

.purchase-options {
  border-radius: var(--lx-radius-lg);
}

.purchase-options .btn {
  transition: transform var(--lx-transition-fast);
}

.purchase-options .btn:hover {
  transform: translateY(-2px);
}

/* -------------------------------------------------------------------------- */
/*                              Footer                                         */
/* -------------------------------------------------------------------------- */

footer {
  background-color: var(--lx-secondary);
}

footer h5 {
  color: var(--lx-white);
}

footer .text-200 {
  color: rgba(255, 255, 255, 0.85) !important; /* WCAG AA compliant: ~6:1 contrast on #002147 */
}

footer .text-400 {
  color: rgba(255, 255, 255, 0.75) !important; /* WCAG AA compliant: ~5:1 contrast on #002147 */
}

footer a.hover-primary {
  transition: color var(--lx-transition-fast);
}

footer a.hover-primary:hover {
  color: var(--lx-primary) !important;
}

.border-700 {
  border-color: rgba(255, 255, 255, 0.1) !important;
}

/* -------------------------------------------------------------------------- */
/*                              Buttons                                        */
/* -------------------------------------------------------------------------- */

.btn-primary {
  background-color: var(--lx-primary);
  border-color: var(--lx-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--lx-primary-dark);
  border-color: var(--lx-primary-dark);
}

.btn-outline-primary {
  color: var(--lx-primary);
  border-color: var(--lx-primary);
}

.btn-outline-primary:hover {
  background-color: var(--lx-primary);
  border-color: var(--lx-primary);
  color: var(--lx-white);
}

/* Fix btn-light - theme.css has inverted colors (white text on light bg) */
.btn-light {
  color: var(--lx-text-primary) !important; /* Dark text for contrast */
  background-color: #fff !important;
  border-color: #fff !important;
}

.btn-light:hover,
.btn-light:focus {
  color: var(--lx-text-primary) !important;
  background-color: var(--lx-gray-100) !important;
  border-color: var(--lx-gray-100) !important;
}

/* -------------------------------------------------------------------------- */
/*                              Utilities                                      */
/* -------------------------------------------------------------------------- */

.rounded-4 {
  border-radius: var(--lx-radius-lg) !important;
}

.shadow-sm {
  box-shadow: var(--lx-shadow-sm) !important;
}

.shadow-lg {
  box-shadow: var(--lx-shadow-lg) !important;
}

.text-primary {
  color: var(--lx-primary) !important;
}

.bg-primary {
  background-color: var(--lx-primary) !important;
}

.text-secondary {
  color: var(--lx-secondary) !important;
}

.bg-secondary {
  background-color: var(--lx-secondary) !important;
}

/* -------------------------------------------------------------------------- */
/*                              Responsive                                     */
/* -------------------------------------------------------------------------- */

@media (max-width: 991.98px) {
  .hero-search-card {
    margin-top: 2rem;
  }

  .hero-image {
    max-width: 70% !important;
    margin: 0 auto;
  }
}

@media (max-width: 767.98px) {
  .hero-search {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }

  .hero-search h1 {
    font-size: 1.75rem;
  }

  .book-card .format-badges {
    display: none;
  }
}

/* -------------------------------------------------------------------------- */
/*                              Print Styles                                   */
/* -------------------------------------------------------------------------- */

@media print {
  .navbar,
  .top-bar,
  .language-switcher,
  footer {
    display: none !important;
  }
}

/* -------------------------------------------------------------------------- */
/*                              Word of the Day                                */
/* -------------------------------------------------------------------------- */

.wotd-hero {
  background: linear-gradient(135deg, var(--lx-gray-50) 0%, var(--lx-white) 50%, var(--lx-primary-lighter) 100%);
  position: relative;
  overflow: hidden;
}

.wotd-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 140%;
  background: radial-gradient(ellipse, var(--lx-primary-lighter) 0%, transparent 70%);
  pointer-events: none;
}

.wotd-steps .step-number {
  font-family: var(--lx-font-heading);
  box-shadow: var(--lx-shadow-md);
}

.wotd-signup .card {
  overflow: hidden;
}

.wotd-signup .form-control:focus,
.wotd-signup .form-select:focus {
  border-color: var(--lx-primary);
  box-shadow: 0 0 0 3px var(--lx-primary-light);
}

.wotd-success .success-icon,
.wotd-unsubscribe .unsubscribe-icon {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.wotd-languages .btn {
  transition: all var(--lx-transition-base);
}

.wotd-languages .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--lx-shadow-md);
}

/* -------------------------------------------------------------------------- */
/*                              Error Pages                                    */
/* -------------------------------------------------------------------------- */

.error-page .error-icon {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* -------------------------------------------------------------------------- */
/*                              Blog Styles                                    */
/* -------------------------------------------------------------------------- */

/* Constrain blog content width for readability */
.u-section-1,
.u-section-2 {
  max-width: 100%;
}

.u-section-1 .u-sheet,
.u-section-2 .u-sheet {
  max-width: 800px !important;
  margin-left: auto !important;
  margin-right: auto !important;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Blog post text styling */
.u-section-2 .u-rich-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--lx-text-primary);
}

.u-section-2 .u-rich-text p {
  margin-bottom: 1.25rem;
}

/* Blog post text styling */
.blog-post-content {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--lx-text-primary);
}

.blog-post-content p {
  margin-bottom: 1.5rem;
}

.blog-post-content h2,
.blog-post-content h3,
.blog-post-content h4 {
  color: var(--lx-secondary);
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.blog-post-content h2 {
  font-size: 1.75rem;
}

.blog-post-content h3 {
  font-size: 1.5rem;
}

.blog-post-content h4 {
  font-size: 1.25rem;
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.blog-post-content li {
  margin-bottom: 0.5rem;
}

.blog-post-content blockquote {
  border-left: 4px solid var(--lx-primary);
  padding-left: 1rem;
  margin-left: 0;
  margin-bottom: 1.5rem;
  font-style: italic;
  color: var(--lx-text-secondary);
}

.blog-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--lx-radius-md);
  margin: 1.5rem 0;
  box-shadow: var(--lx-shadow-md);
}

/* Legacy support (to be removed after refactor, but kept for safety during transition) */
.u-section-2 .u-rich-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--lx-text-primary);
}

/* Blog listing cards */
.u-blog .u-repeater {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 1rem;
}

.u-blog-post {
  max-width: 350px;
}

/* -------------------------------------------------------------------------- */
/*                          Landing Page Fixes                                 */
/* -------------------------------------------------------------------------- */

/* Breadcrumb visibility fix */
.breadcrumb-item a {
  color: var(--lx-text-secondary) !important;
}

.breadcrumb-item.active {
  color: var(--lx-text-primary) !important;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--lx-gray-400) !important;
}

/* FAQ Accordion styling */
.accordion-item {
  border: 1px solid var(--lx-gray-200);
  margin-bottom: 0.5rem;
  border-radius: var(--lx-radius-md) !important;
  overflow: hidden;
}

.accordion-button {
  background-color: var(--lx-gray-100) !important;
  color: var(--lx-text-primary) !important;
  font-weight: 500;
  padding: 1rem 1.25rem;
}

.accordion-button:not(.collapsed) {
  background-color: var(--lx-gray-100) !important;
  color: var(--lx-text-primary) !important;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--lx-primary);
}

.accordion-button::after {
  background-size: 1rem;
}

.accordion-body {
  background-color: #fff;
  padding: 1.25rem;
}