/* Modern Theme Enhancements for MemoDiction */

:root {
  /* Modern color palette inspired by logo */
  --primary-color: #4a7c7e;
  --primary-gradient: linear-gradient(135deg, #5a8f92 0%, #3d6466 100%);
  --accent-gradient: linear-gradient(135deg, #6ca4a7 0%, #4a7c7e 100%);
  --secondary-color: #7fb4b7;
  --success-color: #5a8f92;
  --info-color: #8fc4c7;
  --warning-color: #e89c3c;

  /* Neutral colors */
  --text-primary: #2c4547;
  --text-secondary: #5a7577;
  --text-muted: #8a9b9d;
  --bg-light: #f0f5f5;
  --bg-white: #ffffff;

  /* Shadows and effects */
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  --shadow-lifted: 0 10px 25px rgba(0, 0, 0, 0.12), 0 5px 10px rgba(0, 0, 0, 0.08);

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease-in-out;
}

/* Modern typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Playfair+Display:wght@700&display=swap');

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  font-weight: 400;
  letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  color: var(--text-primary);
}

/* Modern card design for word grid */
.card {
  border: none !important;
  border-radius: var(--radius-lg) !important;
  transition: var(--transition-base);
  overflow: hidden;
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: relative;
}

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

.card .card-img-top {
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

.card .card-img-overlay {
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.7) 100%);
  transition: var(--transition-base);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card:hover .card-img-overlay {
  background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.8) 100%);
}

.card-title {
  font-family: 'Inter', sans-serif !important;
  font-weight: 600 !important;
  font-size: 1.25rem !important;
  text-transform: capitalize;
  letter-spacing: -0.02em;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

/* Modern gradient backgrounds for cards */
.random-gradient {
  background: var(--accent-gradient);
  animation: gradientShift 10s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Word detail page enhancements */
.word-box {
  background: var(--primary-gradient);
  color: white;
  border: none !important;
  position: relative;
  overflow: hidden;
  padding: 2rem 1.5rem !important;
  margin-bottom: 2rem !important;
}

.word-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.1); opacity: 0.1; }
}

.word-title {
  font-size: 3rem !important;
  font-family: 'Playfair Display', serif !important;
  margin: 0 !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.speaker-btn {
  background: rgba(255,255,255,0.2) !important;
  border: 2px solid rgba(255,255,255,0.3) !important;
  backdrop-filter: blur(10px);
  border-radius: 50% !important;
  width: 60px;
  height: 60px;
  transition: var(--transition-base);
  color: white !important;
}

.speaker-btn:hover {
  background: rgba(255,255,255,0.3) !important;
  transform: scale(1.1);
  border-color: rgba(255,255,255,0.5) !important;
}

/* Definition boxes with modern styling */
.definition-box,
.etymology-box,
.idioms-box,
.misconceptions-box {
  background: var(--bg-white);
  border: 1px solid rgba(0,0,0,0.05) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  padding: 1.5rem !important;
}

.definition-box:hover,
.etymology-box:hover,
.idioms-box:hover,
.misconceptions-box:hover {
  box-shadow: var(--shadow);
  transform: translateX(5px);
}

.definition-box h2,
.etymology-box h2,
.idioms-box h2,
.misconceptions-box h2 {
  font-size: 1.25rem !important;
  color: var(--primary-color);
  margin-bottom: 1rem !important;
  font-family: 'Inter', sans-serif !important;
  font-weight: 600;
  display: flex;
  align-items: center;
}

.definition-box h2::before {
  content: "📖";
  margin-right: 0.5rem;
}

.etymology-box h2::before {
  content: "🌍";
  margin-right: 0.5rem;
}

.idioms-box h2::before {
  content: "💭";
  margin-right: 0.5rem;
}

.misconceptions-box h2::before {
  content: "⚠️";
  margin-right: 0.5rem;
}

/* Modern search bar */
#home-search-link {
  background: var(--primary-gradient) !important;
  color: white !important;
  border: none !important;
  padding: 0.75rem 2rem !important;
  border-radius: var(--radius-xl) !important;
  font-weight: 500;
  transition: var(--transition-base);
  box-shadow: var(--shadow);
}

#home-search-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Modern pagination */
.pagination {
  margin-top: 3rem;
}

.page-link {
  border: none !important;
  border-radius: var(--radius) !important;
  margin: 0 0.25rem;
  padding: 0.5rem 1rem !important;
  font-weight: 500;
  color: var(--text-secondary) !important;
  background: var(--bg-light) !important;
  transition: var(--transition-fast);
}

.page-link:hover {
  background: var(--primary-gradient) !important;
  color: white !important;
  transform: translateY(-2px);
}

.page-item.active .page-link {
  background: var(--primary-gradient) !important;
  color: white !important;
  box-shadow: var(--shadow);
}

.page-item.disabled .page-link {
  background: var(--bg-light) !important;
  color: var(--text-muted) !important;
  opacity: 0.5;
}

/* Badge styling */
.badge.bg-secondary {
  background: var(--primary-gradient) !important;
  padding: 0.5rem 1rem !important;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

/* Navbar enhancements */
.navbar {
  box-shadow: var(--shadow-sm) !important;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.95) !important;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color) !important;
}

/* Footer enhancements */
footer {
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%) !important;
  border-top: 1px solid rgba(0,0,0,0.05);
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Loading animation for cards */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.15s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.25s; }
.card:nth-child(5) { animation-delay: 0.3s; }
.card:nth-child(6) { animation-delay: 0.35s; }

/* Inner box styling for structured content */
.inner-box {
  background: var(--bg-light);
  padding: 1rem;
  border-radius: var(--radius);
  margin-top: 0.5rem;
  border-left: 3px solid var(--primary-color);
}

.inner-box strong {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-block;
  margin-bottom: 0.25rem;
}

.inner-box p {
  margin: 0.5rem 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Dark mode adjustments */
.page-dark-mode {
  --text-primary: #e8f2f2;
  --text-secondary: #b8d0d1;
  --text-muted: #8fa8a9;
  --bg-white: #1a2e2f;
  --bg-light: #233b3c;
  --primary-color: #6ca4a7;
  --primary-gradient: linear-gradient(135deg, #7ab5b8 0%, #5a8f92 100%);
  --accent-gradient: linear-gradient(135deg, #8fc4c7 0%, #6ca4a7 100%);
  --secondary-color: #8fc4c7;
}

.page-dark-mode .card,
.page-dark-mode .definition-box,
.page-dark-mode .etymology-box,
.page-dark-mode .idioms-box,
.page-dark-mode .misconceptions-box {
  background: var(--bg-white) !important;
  border-color: rgba(255,255,255,0.1) !important;
}

.page-dark-mode .navbar {
  background: rgba(26,46,47,0.95) !important;
}

.page-dark-mode .navbar-brand {
  color: var(--secondary-color) !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .word-title {
    font-size: 2rem !important;
  }

  .card-title {
    font-size: 1.1rem !important;
  }

  .speaker-btn {
    width: 50px;
    height: 50px;
  }
}