/* ═══════════════════════════════════════════════
   AI 副业赚钱手册 - 样式
   ═══════════════════════════════════════════════ */

.handbook-readme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 10px 18px;
  border-radius: 100px;
  border: 1px solid rgba(99,102,241,0.35);
  background: rgba(99,102,241,0.1);
  color: var(--accent);
  font-size: 14px;
  cursor: pointer;
  transition: all .2s;
}

.handbook-readme-toggle:hover {
  background: rgba(99,102,241,0.18);
  border-color: rgba(99,102,241,0.5);
}

.handbook-readme-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.handbook-readme-modal[hidden] {
  display: none;
}

.handbook-readme-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
}

.handbook-readme-dialog {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg);
  text-align: left;
}

.handbook-readme-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(18, 18, 26, 0.95);
}

.handbook-readme-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.handbook-readme-close {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-size: 18px;
  cursor: pointer;
  transition: all .2s;
}

.handbook-readme-close:hover {
  color: var(--text);
  border-color: rgba(99,102,241,0.4);
  background: rgba(99,102,241,0.12);
}

.handbook-readme-main {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  width: 100%;
  min-height: 0;
  overflow: hidden;
  text-align: left;
}

.handbook-readme-toc {
  display: none;
}

.handbook-readme-toc-nav {
  position: static;
  top: auto;
  left: auto;
  right: auto;
  z-index: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  height: auto;
  padding: 0;
  margin: 0;
  background: transparent;
  backdrop-filter: none;
  border: none;
  text-align: left;
}

.handbook-readme-toc-title {
  flex-shrink: 0;
}

.handbook-readme-body {
  flex: 1;
  overflow-y: auto;
  padding: 32px 24px 48px;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  text-align: left;
}

.handbook-readme-body.handbook-article {
  max-width: none;
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 32px 24px 48px;
}

.handbook-readme-body h1,
.handbook-readme-body h2,
.handbook-readme-body h3,
.handbook-readme-body h4 {
  scroll-margin-top: 24px;
}

.handbook-readme-loading {
  text-align: center;
  color: var(--text-dim);
  padding: 48px 24px;
}

.handbook-page {
  padding: 100px 0 80px;
}

.handbook-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 28px;
}

.handbook-search {
  flex: 1;
  min-width: 240px;
  display: flex;
  gap: 10px;
}

.handbook-search input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
}

.handbook-search input:focus {
  outline: none;
  border-color: rgba(99,102,241,0.5);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.handbook-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.filter-chip {
  padding: 8px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}

.filter-chip:hover,
.filter-chip.active {
  color: var(--text);
  border-color: rgba(99,102,241,0.4);
  background: rgba(99,102,241,0.12);
}

.filter-chip .count {
  margin-left: 6px;
  opacity: 0.7;
}

.handbook-stats {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 20px;
}

.handbook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.handbook-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  transition: transform .2s, border-color .2s, box-shadow .2s;
  min-height: 220px;
}

.handbook-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99,102,241,0.35);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}

.handbook-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.handbook-series {
  font-size: 12px;
  color: var(--accent-2);
}

.handbook-chapter {
  font-size: 12px;
  color: var(--text-dim);
}

.handbook-card h3 {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
}

.handbook-card p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
}

.handbook-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.handbook-tag {
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(99,102,241,0.12);
  color: var(--accent);
  font-size: 12px;
}

.handbook-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: all .2s;
}

.page-btn:hover:not(:disabled) {
  border-color: rgba(99,102,241,0.4);
  background: rgba(99,102,241,0.12);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.handbook-empty,
.handbook-loading {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
}

.handbook-empty .icon {
  font-size: 48px;
  margin-bottom: 16px;
}

/* Detail page */
.handbook-detail {
  padding: 100px 0 80px;
}

.handbook-detail-header {
  max-width: 820px;
  margin: 0 auto 32px;
}

.handbook-detail-header h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.3;
  margin: 16px 0;
}

.handbook-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 14px;
}

.handbook-article {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  line-height: 1.9;
}

.handbook-article h1,
.handbook-article h2,
.handbook-article h3,
.handbook-article h4 {
  margin: 1.6em 0 0.8em;
  line-height: 1.4;
}

.handbook-article h1 { font-size: 28px; }
.handbook-article h2 { font-size: 22px; }
.handbook-article h3 { font-size: 18px; }
.handbook-article h4 { font-size: 16px; }

.handbook-article p {
  margin: 1em 0;
  color: var(--text);
}

.handbook-article ul,
.handbook-article ol {
  margin: 1em 0 1em 1.4em;
}

.handbook-article li {
  margin: 0.4em 0;
}

.handbook-article code {
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  font-size: 0.92em;
}

.handbook-article pre {
  margin: 1.2em 0;
  padding: 16px;
  border-radius: 12px;
  background: #0d0d14;
  overflow-x: auto;
}

.handbook-article pre code {
  padding: 0;
  background: none;
}

.handbook-article a {
  color: var(--accent-2);
  text-decoration: underline;
}

.handbook-article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.handbook-nav-links {
  max-width: 820px;
  margin: 32px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.handbook-nav-card {
  padding: 18px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color .2s;
}

.handbook-nav-card:hover {
  border-color: rgba(99,102,241,0.35);
}

.handbook-nav-card .label {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.handbook-nav-card .title {
  font-size: 14px;
  line-height: 1.5;
}

.handbook-nav-card.next {
  text-align: right;
}

.handbook-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 20px;
  transition: color .2s;
}

.handbook-back:hover {
  color: var(--text);
}

@media (max-width: 768px) {
  .handbook-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .handbook-nav-links {
    grid-template-columns: 1fr;
  }

  .handbook-nav-card.next {
    text-align: left;
  }

  .handbook-article {
    padding: 20px;
  }
}

@media (min-width: 1024px) {
  .handbook-readme-toc {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    align-self: stretch;
    width: 380px;
    flex-shrink: 0;
    border-right: 1px solid var(--border);
    background: rgba(18, 18, 26, 0.75);
    overflow: hidden;
    padding: 24px 16px 32px;
    text-align: left;
  }

  .handbook-readme-toc-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    margin-bottom: 16px;
    padding: 0 12px;
    text-align: left;
    flex-shrink: 0;
  }

  .handbook-readme-toc-nav {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    gap: 4px;
  }

  .handbook-readme-toc-link {
    display: block;
    width: 100%;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-dim);
    text-align: left;
    transition: all .2s;
    border-left: 2px solid transparent;
  }

  .handbook-readme-toc-link:hover,
  .handbook-readme-toc-link.active {
    color: var(--text);
    background: rgba(99,102,241,0.1);
    border-left-color: var(--accent);
  }

  .handbook-readme-toc-link.level-1 { padding-left: 12px; font-weight: 600; }
  .handbook-readme-toc-link.level-2 { padding-left: 20px; }
  .handbook-readme-toc-link.level-3 { padding-left: 28px; font-size: 12px; }
  .handbook-readme-toc-link.level-4 { padding-left: 36px; font-size: 12px; }

  .handbook-readme-body,
  .handbook-readme-body.handbook-article {
    max-width: none;
    margin: 0;
    padding: 32px 48px 48px;
    text-align: left;
  }
}