/* ============================================
   Pages Additional Styles
   ============================================ */

/* === Page Hero === */
.page-hero {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.page-hero-inner {
  max-width: 640px;
}

.page-hero-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.03em;
  line-height: 1.55;
  margin-bottom: 20px;
  margin-top: 16px;
}

.page-hero-desc {
  font-size: 18px;
  color: var(--gray);
  line-height: 1.75;
}

/* === Filter Bar === */
.filter-section {
  padding: 32px 0 0;
  background: var(--bg);
}

.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray);
  background: var(--light-gray);
  border: 1.5px solid transparent;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}

.filter-btn:hover {
  color: var(--dark);
  border-color: var(--border);
}

.filter-btn.active {
  background: var(--dark);
  color: var(--white);
}

/* === Blog Page === */
.blog-hero-search {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  max-width: 480px;
}

.search-input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  font-size: 15px;
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--gold);
}

.search-input::placeholder { color: var(--gray); }

.btn-search {
  padding: 14px 24px;
  background: var(--dark);
  color: var(--white);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-search:hover { background: var(--gold); }

/* === Ebook Page === */
.ebooks-page-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .ebooks-page-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .ebooks-page-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-hero-search { flex-direction: column; }
}

@media (max-width: 480px) {
  .ebooks-page-grid { grid-template-columns: 1fr; }
}

/* === Blog Full Grid === */
.blog-full-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.blog-full-grid .blog-card:first-child {
  grid-column: 1 / -1;
}

.blog-full-grid .blog-card:first-child .blog-thumb {
  aspect-ratio: 21/9;
}

@media (max-width: 768px) {
  .blog-full-grid { grid-template-columns: 1fr; }
  .blog-full-grid .blog-card:first-child { grid-column: auto; }
  .blog-full-grid .blog-card:first-child .blog-thumb { aspect-ratio: 16/9; }
}

/* === Article Modal === */
.article-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 9000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  overflow-y: auto;
}

.article-modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.article-modal {
  background: var(--white);
  border-radius: 24px;
  width: 100%;
  max-width: 700px;
  padding: 48px 52px 56px;
  position: relative;
  transform: translateY(24px);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.article-modal-overlay.open .article-modal {
  transform: translateY(0);
}

.article-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--light-gray);
  border: none;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  line-height: 1;
}

.article-modal-close:hover { background: var(--border); }

.article-modal-tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--gold-pale);
  color: var(--gold);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 18px;
}

.article-modal-title {
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.45;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.article-modal-meta {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.article-modal-body {
  font-size: 17px;
  color: #333;
  line-height: 1.85;
}

.article-modal-body p {
  margin-bottom: 20px;
}

.article-modal-body .highlight-box {
  background: var(--gold-pale);
  border-left: 4px solid var(--gold);
  border-radius: 0 12px 12px 0;
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 16px;
  color: var(--dark);
}

.article-modal-body .rule-list {
  background: var(--light-gray);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
  list-style: none;
}

.article-modal-body .rule-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
  color: var(--dark);
}

.article-modal-body .rule-list li:last-child { border-bottom: none; }

.article-modal-body .rule-list li strong {
  color: var(--gold);
  display: block;
  margin-bottom: 2px;
}

.article-modal-body .answer-box {
  background: #E8F5E9;
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 16px;
}

.article-modal-body .answer-box p { margin-bottom: 8px; }
.article-modal-body .answer-box p:last-child { margin-bottom: 0; }

.article-modal-author {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--gray);
  font-style: italic;
}

.article-modal-author span { color: var(--gold); font-weight: 700; font-style: normal; }

@media (max-width: 600px) {
  .article-modal { padding: 36px 24px 40px; }
  .article-modal-overlay { padding: 20px 12px; }
}

/* === About Page === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-photo {
  aspect-ratio: 4/5;
  border-radius: 32px;
  background: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  overflow: hidden;
}

.about-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.4;
}

.about-text {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-credentials {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.credential-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--dark);
  font-weight: 500;
}

.credential-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gold-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}