:root {
  --primary-bg: #e0e5ec;
  --shadow-dark: #a3b1c6;
  --shadow-light: #ffffff;
  --text-color: #2d3748;
  --accent-color: #6a5acd;
  --card-radius: 15px;
  --transition-speed: 0.2s;
}

body {
  margin: 0;
  padding: 15px;
  font-family: 'Segoe UI', sans-serif;
  background: var(--primary-bg);
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Navigation */
.navbar {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 25px;
  padding: 15px;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: 8px 8px 15px var(--shadow-dark), 
              -8px -8px 15px var(--shadow-light);
}

.nav-btn {
  border: none;
  border-radius: var(--card-radius);
  padding: 12px 20px;
  background: var(--primary-bg);
  box-shadow: 5px 5px 10px var(--shadow-dark), 
              -5px -5px 10px var(--shadow-light);
  cursor: pointer;
  color: var(--text-color);
  font-size: 1em;
  transition: all var(--transition-speed) ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-btn.active {
  box-shadow: inset 3px 3px 6px var(--shadow-dark), 
              inset -3px -3px 6px var(--shadow-light);
  color: var(--accent-color);
}

/* Search Panel */
.search-panel {
  margin-bottom: 20px;
  padding: 15px;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: inset 5px 5px 10px var(--shadow-dark), 
              inset -5px -5px 10px var(--shadow-light);
  display: none;
}

.search-container {
  display: flex;
  gap: 10px;
}

#searchInput {
  flex: 1;
  padding: 12px 15px;
  border: none;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), 
              inset -3px -3px 6px var(--shadow-light);
  font-size: 1em;
}

.close-btn {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--primary-bg);
  box-shadow: 3px 3px 6px var(--shadow-dark), 
              -3px -3px 6px var(--shadow-light);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all var(--transition-speed) ease;
}

.close-btn:hover {
  transform: scale(0.95);
}

/* Page Content */
.page-content {
  display: none;
}

.page-content.active {
  display: block;
}

/* About Page */
.about-content {
  padding: 30px;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: 8px 8px 15px var(--shadow-dark), 
              -8px -8px 15px var(--shadow-light);
  max-width: 800px;
  margin: 0 auto;
}

.about-content h2 {
  color: var(--accent-color);
  margin-top: 0;
}

.contact-info {
  margin-top: 30px;
  padding: 20px;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), 
              inset -3px -3px 6px var(--shadow-light);
}

.contact-info a {
  color: var(--accent-color);
  text-decoration: none;
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* Image Fade-in */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Prompts Grid */
.prompts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.prompt-card {
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: 6px 6px 12px var(--shadow-dark), 
              -6px -6px 12px var(--shadow-light);
  overflow: hidden;
  transition: all var(--transition-speed) ease;
  cursor: pointer;
  aspect-ratio: 1/1;
  position: relative;
}

.prompt-card:hover {
  transform: translateY(-5px);
  box-shadow: 10px 10px 20px var(--shadow-dark), 
              -10px -10px 20px var(--shadow-light);
}

.prompt-card.loading .card-image {
  background: var(--primary-bg);
  height: 70%;
  animation: pulse 1.5s ease-in-out infinite;
}

.prompt-card.loading .card-title {
  width: 80%;
  height: 1em;
  margin: 15px;
  background: var(--primary-bg);
  border-radius: 4px;
  animation: pulse 1.5s ease-in-out infinite;
}

.card-image {
  width: 100%;
  height: 70%;
  object-fit: cover;
  transition: transform 0.3s ease;
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

.card-image.loaded {
  opacity: 1;
}

.card-content {
  padding: 15px;
}

.card-title {
  margin: 0;
  font-size: 0.95em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--text-color);
  opacity: 0.7;
}

.empty-state i {
  font-size: 2em;
  margin-bottom: 10px;
  color: var(--accent-color);
}

/* Expanded View */
.expanded-view {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  padding: 20px;
  overflow-y: auto;
}

.expanded-content {
  max-width: 700px;
  margin: 30px auto;
  padding: 30px;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  position: relative;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#expandedImage {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--card-radius);
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  animation: fadeIn 0.5s ease forwards;
}

.instruction-box, .prompt-box {
  padding: 20px;
  margin: 20px 0;
  border-radius: var(--card-radius);
  background: var(--primary-bg);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), 
              inset -3px -3px 6px var(--shadow-light);
}

.prompt-content {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

#expandedPrompt {
  flex: 1;
  white-space: pre-wrap;
  line-height: 1.6;
}

.copy-btn {
  padding: 10px 15px;
  border: none;
  border-radius: 10px;
  background: var(--primary-bg);
  box-shadow: 3px 3px 6px var(--shadow-dark), 
              -3px -3px 6px var(--shadow-light);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
  min-width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9em;
  color: var(--accent-color);
}

.copy-btn:hover {
  box-shadow: inset 2px 2px 5px var(--shadow-dark), 
              inset -2px -2px 5px var(--shadow-light);
}

.copy-btn.copied {
  background: rgba(106, 90, 205, 0.1);
}

.copy-btn i {
  transition: transform 0.2s ease;
}

.copy-btn.copied i {
  transform: scale(1.2);
}

/* Responsive */
@media (max-width: 768px) {
  .prompts-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }

  .card-image {
    height: 65%;
  }

  .card-content {
    padding: 12px;
  }

  .card-title {
    font-size: 0.9em;
  }

  .expanded-content {
    padding: 20px;
  }

  .copy-btn {
    padding: 8px 12px;
    font-size: 0.85em;
  }
}

@media (max-width: 480px) {
  .prompts-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .card-title {
    font-size: 0.85em;
  }

  .navbar {
    gap: 8px;
  }

  .nav-btn {
    padding: 10px 15px;
    font-size: 0.9em;
  }

  .expanded-content {
    padding: 15px;
  }

  .instruction-box, .prompt-box {
    padding: 15px;
  }
}