:root {
  --bg-color: #101217;
  --sec-color: #1a1d24;
  --sec-color-2: #2a2d35;
  --green: rgb(86, 222, 147);
  --white: #ffffff;
  --border-radius: 12px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Arial", sans-serif;
  background-color: var(--bg-color);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header */
header {
  padding: 2rem 1rem;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-color) 0%, var(--sec-color) 100%);
}

h1 {
  color: var(--green);
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.subtitle {
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.8;
}

.subtitle:hover {
  opacity: 1;
  color: var(--green);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 999;
  align-items: center;
  justify-content: center;
}

.modal-content {
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

select {
  font-size: 1.5rem;
  padding: 1rem;
  color: var(--white);
  border: 2px solid var(--green);
  border-radius: var(--border-radius);
  cursor: pointer;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Sections */
.section {
  margin: 4rem 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  color: var(--green);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.section-desc {
  color: #aaa;
  font-size: 1.1rem;
  font-style: italic;
}

/* Character Research Section */
.character-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .character-groups {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.character-group {
  background: var(--sec-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.character-group.visible {
  opacity: 1;
  transform: translateY(0);
}

.character-group:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(86, 222, 147, 0.1);
}

.character-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--green);
  flex-wrap: wrap;
  justify-content: center;
}

.character-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.character-card h3 {
  color: var(--green);
  font-size: 1.5rem;
  font-weight: 600;
  flex-basis: 100%;
  text-align: center;
  margin-top: 1rem;
}

.status-section {
  margin-bottom: 2rem;
}

.status-section h4 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  padding-left: 0.5rem;
  border-left: 3px solid var(--green);
}

.book-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Book Items */
.book-item {
  background: var(--sec-color-2);
  padding: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.book-item:hover {
  background: var(--bg-color);
  border-left-color: var(--green);
  transform: translateX(5px);
}

.book-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.book-author {
  color: #aaa;
  font-size: 0.9rem;
}

.book-rating {
  display: flex;
  gap: 2px;
  margin-top: 0.5rem;
}

.star {
  width: 16px;
  height: 16px;
  fill: var(--green);
}

.star.empty {
  fill: var(--sec-color);
}

/* Recommendation Groups */
.recommendation-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .recommendation-groups {
    grid-template-columns: 1fr 1fr;
  }
}

.recommendation-group {
  background: var(--sec-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.recommendation-group.visible {
  opacity: 1;
  transform: translateY(0);
}

.recommendation-group h3 {
  color: var(--green);
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* Series Cards */
.series-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .series-container {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

.series-card {
  background: var(--sec-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.series-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.series-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(86, 222, 147, 0.1);
}

.series-card h3 {
  color: var(--green);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

.progress-info {
  text-align: center;
  color: #aaa;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.volume-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto;
}

.volume-slot {
  aspect-ratio: 1;
  background: var(--sec-color-2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.volume-slot.read {
  background: var(--green);
  color: var(--bg-color);
}

.volume-slot.read:hover {
  background: #68d998;
  transform: scale(1.1);
}

.volume-slot:not(.read):hover {
  border-color: var(--green);
  background: var(--bg-color);
}

/* Filter Buttons */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.filter-btn {
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 25px;
  transition: var(--transition);
  user-select: none;
  background: var(--sec-color);
  color: #68d998;
}

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

.filter-btn.active {
  background: var(--green);
  color: var(--sec-color);
}

/* Book Grid */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.book-grid.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .book-grid {
    grid-template-columns: 1fr;
  }
}

.book-card {
  background: var(--sec-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  border-left: 4px solid transparent;
}

.book-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(86, 222, 147, 0.1);
  border-left-color: var(--green);
}

.book-card .book-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.book-card .book-author {
  color: #aaa;
  margin-bottom: 1rem;
}

.book-card .book-rating {
  margin-bottom: 1rem;
}

.mini-quote {
  font-style: italic;
  color: var(--green);
  font-size: 0.9rem;
  line-height: 1.4;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--sec-color-2);
}

.read-date {
  color: #aaa;
  font-size: 0.8rem;
  font-weight: normal;
}

/* Review Modal */
.review-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.review-modal-content {
  background: var(--sec-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 2rem;
  cursor: pointer;
  color: var(--green);
  transition: var(--transition);
}

.close-btn:hover {
  color: var(--white);
  transform: scale(1.1);
}

/* Footer */
footer {
  margin-top: 6rem;
  padding: 3rem 1rem;
  text-align: center;
  background: var(--sec-color);
  border-top: 1px solid var(--sec-color-2);
}

.mirrors {
  color: var(--green);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.goodreads {
  margin: 0.5rem 0;
}

.goodreads a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
}

.goodreads a:hover {
  color: var(--green);
}

/* Fade-in Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Optimizations */
@media (max-width: 768px) {
  .container {
    padding: 0 0.5rem;
  }

  .section {
    margin: 2rem 0;
  }

  .character-group,
  .recommendation-group,
  .series-card {
    padding: 1.5rem;
  }

  .filter-buttons {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }

  .volume-grid {
    grid-template-columns: repeat(auto-fill, minmax(35px, 1fr));
  }

  .review-modal {
    padding: 1rem;
  }

  .review-modal-content {
    padding: 1.5rem;
  }
}

/* Loading Animation */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--green);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #68d998;
}

/* Character Quotes Section */
.character-quotes {
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  min-height: 500px;
}

.character-quotes.visible {
  opacity: 1;
  transform: translateY(0);
}

.quotes-container {
  display: flex;
  flex-direction: column;
  gap: 2rem; /* Increased gap between cards */
  height: 100%;
}

.quote-card {
  background: var(--bg-color); /* Changed to darker background for more contrast */
  border-radius: 12px; /* Increased border radius */
  padding: 1.5rem;
  transition: var(--transition);
  opacity: 1;
  position: relative; /* For better positioning */
}

.quote-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--green);
  border-radius: 2px 0 0 2px;
}

.quote-text {
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  font-style: italic;
}

.quote-text.quote {
  color: var(--green);
}

.quote-text.thought {
  color: var(--white);
}

.quote-attribution {
  color: #aaa;
  font-size: 0.9rem;
  text-align: right;
}

/* Book Images */
.book-images {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  justify-content: flex-start; /* Changed from center to flex-start */
}

.book-thumbnail {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

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

/* Image Modal */
.image-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  z-index: 1001;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.image-modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  text-align: center;
}

.image-modal-content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--border-radius);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.image-caption {
  color: var(--white);
  font-size: 1.1rem;
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--border-radius);
  backdrop-filter: blur(4px);
}

@media (max-width: 768px) {
  .character-groups {
    grid-template-columns: 1fr;
  }

  .character-quotes {
    min-height: 300px;
    padding: 1.5rem;
  }

  .quote-text {
    font-size: 0.95rem;
  }

  .quotes-container {
    gap: 1rem;
  }

  .quote-card {
    padding: 1rem;
  }
}