/* ============================================
   KKV Library - Main Stylesheet
   Light WordPress Twenty Twenty-Four Theme
   ============================================ */

/* Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Font Awesome */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css');

/* CSS Variables - matching kkvlibrary.com (Twenty Twenty-Four) */
:root {
  --color-base: #f9f9f9;
  --color-base-2: #ffffff;
  --color-contrast: #111111;
  --color-contrast-2: #636363;
  --color-contrast-3: #A4A4A4;
  --color-accent: #cfcabe;
  --color-accent-2: #c2a990;
  --color-accent-3: #d8613c;
  --color-accent-4: #b1c5a4;
  --color-accent-5: #b5bdbc;
  --content-width: 620px;
  --wide-width: 1280px;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --border-color: #dddddd;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  --radius: 4px;
  --transition: all 0.2s ease;
}

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-base);
  color: var(--color-contrast);
  line-height: 1.6;
  min-height: 100vh;
  font-size: 16px;
}

a {
  color: var(--color-contrast);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-contrast-2);
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-contrast);
}

/* ========== SITE HEADER / NAVBAR ========== */
.site-header {
  background: var(--color-base-2);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-header-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.site-brand .brand-text {
  font-family: var(--font-body);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-contrast);
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 5px;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 8px 16px;
  color: var(--color-contrast-2);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: var(--transition);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-contrast);
  background: var(--color-base);
}

/* Search bar in navbar */
.nav-search {
  position: relative;
  margin: 0 15px;
}

.nav-search input {
  width: 250px;
  padding: 8px 36px 8px 12px;
  background: var(--color-base);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--color-contrast);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.nav-search input:focus {
  border-color: var(--color-contrast-3);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.nav-search input::placeholder {
  color: var(--color-contrast-3);
}

.nav-search button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-contrast-2);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-contrast);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 10px;
}

/* ========== HOMEPAGE ========== */
.home-hero {
  text-align: center;
  padding: 40px 20px 0;
  max-width: var(--wide-width);
  margin: 0 auto;
}

.home-hero figure {
  margin: 0 auto 20px;
}

.home-hero figure img {
  display: block;
  margin: 0 auto;
  width: 100%;
  height: auto;
}

.home-heading {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-contrast);
  text-align: center;
}

/* WordPress-style separator */
.wp-separator {
  border: none;
  border-top: 2px solid var(--color-contrast);
  opacity: 0.15;
  margin: 30px auto;
  max-width: 100px;
}

.wp-separator.wide {
  max-width: var(--wide-width);
  margin-left: auto;
  margin-right: auto;
}

/* Category Images Grid (matching kkvlibrary.com homepage) */
.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 20px 20px 40px;
}

.category-grid figure {
  margin: 0;
  text-align: center;
}

.category-grid figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: var(--transition);
}

.category-grid figure img:hover {
  box-shadow: var(--shadow);
}

/* ========== ABOUT SECTION ON HOMEPAGE ========== */
.home-about {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 20px 40px;
}

.home-about-grid {
  display: grid;
  grid-template-columns: 32% auto;
  gap: 30px;
  align-items: start;
}

.home-about-grid .about-image {
  text-align: center;
}

.home-about-grid .about-image img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.home-about-grid .about-text p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-contrast-2);
  margin-bottom: 15px;
}

.home-about-grid .about-text p strong {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  display: block;
  margin-bottom: 15px;
  color: var(--color-contrast);
  letter-spacing: 1px;
}

/* ========== VISITOR COUNTER ========== */
.visitor-counter {
  text-align: center;
  padding: 20px;
  margin: 20px auto;
  max-width: var(--wide-width);
}

.visitor-counter .counter-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-contrast);
  font-family: var(--font-heading);
}

.visitor-counter .counter-label {
  font-size: 0.85rem;
  color: var(--color-contrast-3);
}

.visitor-counter .counter-today {
  font-size: 0.85rem;
  color: var(--color-contrast-3);
  margin-top: 5px;
}

/* ========== CONTACT SECTION ========== */
.contact-section {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
}

.contact-section h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.contact-section p {
  font-size: 0.95rem;
  color: var(--color-contrast-2);
  line-height: 1.8;
  margin-bottom: 10px;
}

.contact-section .highlight {
  color: var(--color-contrast);
  font-weight: 600;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border: none;
  text-align: center;
  background: var(--color-contrast);
  color: var(--color-base-2);
}

.btn:hover {
  opacity: 0.85;
  color: var(--color-base-2);
}

.btn-outline {
  background: transparent;
  color: var(--color-contrast);
  border: 1px solid var(--color-contrast);
}

.btn-outline:hover {
  background: var(--color-contrast);
  color: var(--color-base-2);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.85rem;
}

.btn-danger {
  background: #dc3545;
  color: white;
}

.btn-danger:hover {
  background: #c82333;
  color: white;
}

.btn-success {
  background: #28a745;
  color: white;
}

/* ========== STATS COUNTERS ========== */
.stats-section {
  background: var(--color-base-2);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 40px 20px;
}

.stats-grid {
  max-width: var(--wide-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-card {
  padding: 15px;
}

.stat-card .stat-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
  display: block;
}

.stat-card .stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-contrast);
  display: block;
  line-height: 1;
  margin-bottom: 5px;
}

.stat-card .stat-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-contrast-3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ========== SECTION HEADERS ========== */
.section-header {
  text-align: center;
  margin-bottom: 40px;
  padding: 0 20px;
}

.section-header h2 {
  font-size: 1.8rem;
  color: var(--color-contrast);
  margin-bottom: 8px;
}

.section-header p {
  color: var(--color-contrast-2);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin: 15px 0;
}

.section-divider::before,
.section-divider::after {
  content: '';
  height: 1px;
  width: 60px;
  background: var(--border-color);
}

.section-divider .divider-icon {
  color: var(--color-contrast-3);
  font-size: 1rem;
}

/* ========== CATEGORY PAGE (Library/Personal Books) ========== */
.category-banner {
  position: relative;
  text-align: center;
  padding: 20px 20px;
  background: var(--color-base);
  border-bottom: 1px solid var(--border-color);
}

.category-banner h1 {
  font-size: 1.8rem;
  color: var(--color-contrast);
  margin-bottom: 5px;
}

.category-banner p {
  font-size: 0.95rem;
  color: var(--color-contrast-2);
}

/* ========== BOOK GRID ========== */
.books-section {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 30px 20px;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* ========== BOOK CARD ========== */
.book-card {
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.book-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.book-card-cover {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: var(--color-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.book-card:hover .book-card-cover img {
  transform: scale(1.03);
}

.book-card-cover .cover-placeholder {
  text-align: center;
  padding: 20px;
}

.book-card-cover .cover-placeholder .book-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 10px;
  opacity: 0.4;
}

.book-card-cover .cover-placeholder .book-title-mini {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-contrast-2);
  line-height: 1.3;
  max-height: 4em;
  overflow: hidden;
}

.book-card-category {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--color-base-2);
  color: var(--color-contrast-2);
  padding: 3px 10px;
  font-size: 0.7rem;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.book-card-body {
  padding: 15px;
}

.book-card-body h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin-bottom: 4px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card-body h3 a {
  color: var(--color-contrast);
}

.book-card-body h3 a:hover {
  color: var(--color-contrast-2);
}

.book-card-author {
  color: var(--color-contrast-2);
  font-size: 0.85rem;
  margin-bottom: 10px;
  font-style: italic;
}

.book-card-stats {
  display: flex;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.book-card-stats .stat {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--color-contrast-3);
}

.book-card-stats .stat .stat-icon {
  font-size: 0.85rem;
}

/* ========== BOOK DETAIL ========== */
.book-detail {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 40px 20px;
}

.book-detail-header {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.book-detail-cover {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  background: var(--color-base);
  aspect-ratio: 3/4;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-detail-cover .cover-placeholder {
  text-align: center;
  padding: 30px;
}

.book-detail-cover .cover-placeholder .book-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 15px;
  opacity: 0.3;
}

.book-detail-info h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-contrast);
  margin-bottom: 8px;
}

.book-detail-info .book-author {
  font-size: 1.1rem;
  color: var(--color-contrast-2);
  font-style: italic;
  margin-bottom: 20px;
}

.book-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.book-detail-meta .meta-item {
  background: var(--color-base);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--color-contrast-2);
}

.book-detail-meta .meta-item strong {
  color: var(--color-contrast);
  margin-right: 4px;
}

.book-detail-description {
  color: var(--color-contrast-2);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 25px;
  text-align: justify;
}

.book-detail-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.book-detail-stats {
  display: flex;
  gap: 25px;
  padding: 15px 0;
  border-top: 1px solid var(--border-color);
}

.book-detail-stats .stat {
  text-align: center;
}

.book-detail-stats .stat .stat-number {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-contrast);
  display: block;
}

.book-detail-stats .stat .stat-label {
  font-size: 0.8rem;
  color: var(--color-contrast-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Like button */
.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--color-base);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--color-contrast-2);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.like-btn:hover {
  border-color: #dc3545;
  color: #dc3545;
}

.like-btn.liked {
  border-color: #dc3545;
  color: #dc3545;
  background: rgba(220, 53, 69, 0.05);
}

.like-btn .heart-icon {
  font-size: 1.1rem;
  transition: var(--transition);
}

.like-btn.liked .heart-icon {
  animation: heartbeat 0.4s ease;
}

@keyframes heartbeat {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ========== SEARCH RESULTS ========== */
.search-results-header {
  text-align: center;
  padding: 30px 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 25px;
}

.search-results-header h1 {
  font-size: 1.6rem;
  color: var(--color-contrast);
  margin-bottom: 8px;
}

.search-results-header .result-count {
  color: var(--color-contrast-2);
}

.search-highlight {
  background: rgba(207, 202, 190, 0.4);
  padding: 0 2px;
  border-radius: 2px;
}

.snippet {
  background: var(--color-base);
  border-left: 3px solid var(--color-contrast);
  padding: 12px 16px;
  margin: 10px 0;
  font-size: 0.9rem;
  color: var(--color-contrast-2);
  line-height: 1.6;
  font-style: italic;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.search-filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 25px;
}

.search-filters .filter-btn {
  padding: 6px 16px;
  background: var(--color-base);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--color-contrast-2);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-decoration: none;
}

.search-filters .filter-btn:hover,
.search-filters .filter-btn.active {
  background: var(--color-contrast);
  color: var(--color-base-2);
  border-color: var(--color-contrast);
}

/* ========== SUBJECT FILTER CHECKBOXES ========== */
.subject-filter {
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 25px;
  overflow: hidden;
}

.subject-filter-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-contrast);
  list-style: none;
  user-select: none;
  transition: var(--transition);
}

.subject-filter-summary::-webkit-details-marker { display: none; }

.subject-filter-summary:hover { background: var(--color-base); }

.subject-filter-summary::after {
  content: '\f078'; /* chevron-down */
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--color-contrast-3);
  transition: transform 0.2s ease;
}

.subject-filter[open] .subject-filter-summary::after { transform: rotate(180deg); }

.subject-filter-count {
  background: var(--color-contrast);
  color: var(--color-base-2);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 12px;
}

.subject-filter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);      /* fixed 3 columns */
  gap: 4px 18px;
  padding: 12px 18px 15px;
  max-height: 340px;
  overflow-y: auto;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 900px) {
  .subject-filter-grid { grid-template-columns: repeat(2, 1fr); }
}

.subject-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.85rem;
  color: var(--color-contrast-2);
}

.subject-checkbox:hover { background: var(--color-base); }

.subject-checkbox-input { display: none; }

.subject-checkbox-box {
  width: 17px;
  height: 17px;
  min-width: 17px;
  border: 2px solid var(--border-color);
  border-radius: 3px;
  position: relative;
  transition: var(--transition);
}

.subject-checkbox.checked .subject-checkbox-box {
  background: var(--color-contrast);
  border-color: var(--color-contrast);
}

.subject-checkbox.checked .subject-checkbox-box::after {
  content: '\f00c'; /* check */
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: var(--color-base-2);
}

.subject-checkbox.checked .subject-checkbox-label {
  color: var(--color-contrast);
  font-weight: 600;
}

.subject-checkbox-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.subject-checkbox-count {
  font-size: 0.72rem;
  color: var(--color-contrast-3);
  background: var(--color-base);
  border: 1px solid var(--border-color);
  padding: 1px 8px;
  border-radius: 10px;
}

.subject-checkbox.checked .subject-checkbox-count {
  background: var(--color-contrast);
  color: var(--color-base-2);
  border-color: var(--color-contrast);
}

.subject-filter-clear {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 18px 15px;
  padding: 6px 14px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--color-contrast-2);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}

.subject-filter-clear:hover {
  border-color: #dc3545;
  color: #dc3545;
}

@media (max-width: 640px) {
  .subject-filter-grid { grid-template-columns: 1fr; max-height: 260px; }
}

/* ========== REQUEST MODAL (personal books) ========== */
.request-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}

.request-modal {
  background: var(--color-base-2);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  padding: 30px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.request-modal h2 { font-size: 1.25rem; margin-bottom: 6px; }

.request-modal-close {
  position: absolute;
  top: 12px;
  right: 15px;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-contrast-3);
  line-height: 1;
}

.request-modal-close:hover { color: var(--color-contrast); }

/* ========== REQUEST FORM (shared: modal + comments) ========== */
.request-form-note {
  color: var(--color-contrast-2);
  font-size: 0.9rem;
  margin-bottom: 22px;
}

.request-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.request-form-grid .form-group:first-child {
  grid-column: 1 / -1;
}

.request-captcha-group { grid-column: 1 / -1; }

.request-captcha {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 420px;
}

.captcha-question {
  background: var(--color-base);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 9px 14px;
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.captcha-refresh {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 40px;
  height: 40px;
  min-width: 40px;
  cursor: pointer;
  color: var(--color-contrast-2);
  transition: var(--transition);
}

.captcha-refresh:hover { border-color: var(--color-contrast); color: var(--color-contrast); }

.request-form-actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.request-status { font-size: 0.85rem; }
.request-status.success { color: #28a745; }
.request-status.error { color: #dc3545; }

.table-request-btn { white-space: nowrap; }

/* ========== BOOK COMMENTS ========== */
.book-comments { margin-top: 45px; }

.comments-list { margin-bottom: 30px; }

.comment-item {
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}

.comment-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.comment-date {
  color: var(--color-contrast-3);
  font-size: 0.78rem;
}

.comment-text {
  color: var(--color-contrast-2);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
  white-space: pre-wrap;
}

.comment-form-wrap {
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 25px;
}

@media (max-width: 640px) {
  .request-form-grid { grid-template-columns: 1fr; }
  .request-captcha { flex-wrap: wrap; }
  .subject-filter-grid { grid-template-columns: 1fr; }
}

/* ========== PAGINATION ========== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 5px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: var(--transition);
}

.pagination a {
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  color: var(--color-contrast-2);
  text-decoration: none;
}

.pagination a:hover {
  border-color: var(--color-contrast);
  color: var(--color-contrast);
}

.pagination .active {
  background: var(--color-contrast);
  color: var(--color-base-2);
  border: 1px solid var(--color-contrast);
  font-weight: 600;
}

.pagination .disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ========== FOOTER (matching kkvlibrary.com) ========== */
.site-footer {
  background: var(--color-base-2);
  border-top: 2px solid var(--color-contrast);
  padding: 40px 20px;
  margin-top: 40px;
}

.site-footer-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-section p {
  font-size: 0.95rem;
  color: var(--color-contrast-2);
  line-height: 1.7;
  margin-bottom: 5px;
}

.footer-section strong {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-contrast);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-section .visitor-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-contrast);
  margin: 5px 0;
  line-height: 1;
}

/* ========== FORMS ========== */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-contrast-2);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--color-contrast);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-contrast-3);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.form-control::placeholder {
  color: var(--color-contrast-3);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23636363' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* ========== ALERTS ========== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 15px;
  font-size: 0.9rem;
  border-left: 3px solid;
}

.alert-success {
  background: rgba(40, 167, 69, 0.08);
  border-color: #28a745;
  color: #28a745;
}

.alert-danger {
  background: rgba(220, 53, 69, 0.08);
  border-color: #dc3545;
  color: #dc3545;
}

.alert-info {
  background: rgba(0, 123, 255, 0.08);
  border-color: #007bff;
  color: #007bff;
}

.alert-warning {
  background: rgba(255, 193, 7, 0.08);
  border-color: #ffc107;
  color: #856404;
}

/* ========== LOADING ========== */
.loading {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-contrast-3);
}

.loading-spinner {
  display: inline-block;
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-contrast);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-contrast-3);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 15px;
  display: block;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 1.3rem;
  color: var(--color-contrast);
  margin-bottom: 8px;
}

.empty-state p {
  max-width: 500px;
  margin: 0 auto 20px;
  font-size: 0.9rem;
}

/* ========== AUTOCOMPLETE ========== */
.autocomplete-container {
  position: relative;
}

.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-base-2);
  border: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius) var(--radius);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1001;
  display: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.autocomplete-dropdown.show {
  display: block;
}

.autocomplete-item {
  padding: 10px 12px;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  display: block;
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.active {
  background: var(--color-base);
}

.autocomplete-item .suggestion-title {
  color: var(--color-contrast);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.autocomplete-item .suggestion-author {
  color: var(--color-contrast-3);
  font-size: 0.8rem;
  font-style: italic;
}

/* ========== BOOK IMAGE GALLERY ========== */
.book-gallery {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 20px 40px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

.gallery-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-base-2);
  transition: var(--transition);
  aspect-ratio: 4/3;
}

.gallery-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.03);
}

/* ========== ABOUT PAGE ========== */
.about-section {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 40px 20px;
}

.about-section h1 {
  font-size: 2rem;
  color: var(--color-contrast);
  text-align: center;
  margin-bottom: 20px;
}

.about-section p {
  font-size: 0.95rem;
  color: var(--color-contrast-2);
  line-height: 1.8;
  margin-bottom: 15px;
  text-align: justify;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .book-detail-header {
    grid-template-columns: 250px 1fr;
    gap: 30px;
  }

  .home-about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 15px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
  }

  .site-nav.show {
    display: flex;
  }

  .site-nav a {
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
  }

  .nav-search {
    margin: 10px 0;
    width: 100%;
  }

  .nav-search input {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
  }

  .book-detail-header {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .book-detail-cover {
    max-width: 280px;
    margin: 0 auto;
  }

  .book-detail-meta {
    justify-content: center;
  }

  .book-detail-actions {
    justify-content: center;
  }

  .book-detail-stats {
    justify-content: center;
  }

  .category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }

  .home-hero h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
  }

  .book-card-cover {
    height: 200px;
  }

  .stat-card .stat-number {
    font-size: 1.5rem;
  }

  .category-grid {
    grid-template-columns: 1fr;
    padding: 15px;
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
    gap: 25px;
  }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-contrast-3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-contrast-2);
}

/* ========== SELECTION ========== */
::selection {
  background: var(--color-accent);
  color: var(--color-contrast);
}

/* ========== UTILITIES ========== */
.text-muted { color: var(--color-contrast-3); }
.text-center { text-align: center; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.container {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 20px;
}