/**
 * notes.css - 笔记内容、目录、笔记卡片
 * NEGIAO.github.io 模块化 CSS
 */

/* ========================
   Mobile Scroll Optimization
   ======================== */
@media (max-width: 768px) {
  html {
    overscroll-behavior-y: none;
    -webkit-overflow-scrolling: touch;
  }

  body {
    overscroll-behavior-y: none;
    -webkit-overflow-scrolling: touch;
    position: static;
  }

  body::before {
    position: absolute;
    height: 200vh;
    will-change: auto;
    transform: translateZ(0);
  }
}

/* ========================
   Notes Layout
   ======================== */
.note-layout {
  display: block;
  position: relative;
}

.note-content {
  width: 100%;
  max-width: 100vw;
  padding: calc(var(--space-lg) * 1.25) var(--space-lg);
  margin: 0;
  min-height: 100vh;
  box-sizing: border-box;
  text-align: left;
  display: block;
  align-items: normal;
  justify-content: normal;
  overflow: visible;
}

/* ========================
   Note Content Typography
   ======================== */
.note-content h1,
.note-content h2,
.note-content h3,
.note-content h4 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  color: var(--text);
  line-height: 1.3;
  text-align: left;
}

.note-content h1 {
  font-size: 2.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3em;
}

.note-content h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.3em;
}

.note-content h3 {
  font-size: 1.5rem;
  text-align: center;
  margin-top: 2em;
}

.note-content h4 {
  font-size: 1.25rem;
}

.note-content p {
  margin-bottom: 1.2em;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: left;
}

.note-content ul,
.note-content ol {
  padding-left: 2em;
  margin-bottom: 1.2em;
  color: var(--text-secondary);
  text-align: left;
}

.note-content li {
  margin-bottom: 0.5em;
}

.note-content li p {
  margin-bottom: 0.5em;
}

.note-content blockquote {
  border-left: 4px solid var(--primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: rgba(0, 217, 255, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
}

.note-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

.note-content th,
.note-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  text-align: left;
}

.note-content th {
  background: var(--surface-elevated);
  font-weight: 600;
  color: var(--text);
}

.note-content td:last-child {
  text-align: left;
}

.note-content tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.note-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-xl) 0;
}

.note-content strong {
  color: var(--text);
  font-weight: 600;
}

.note-content a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.note-content a:hover {
  border-bottom-color: var(--primary);
}

.note-content img,
.note-content video {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-md) 0;
}

.note-content iframe {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: var(--space-md) 0;
}

.note-content pre,
.note-content code {
  font-family: var(--font-mono);
}

.note-content pre {
  position: relative;
}

/* ========================
   Note TOC (Table of Contents)
   ======================== */
.note-toc {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%) translateZ(0);
  width: 280px;
  overflow: visible;
  padding: calc(var(--space-lg) * 0.9);
  background: linear-gradient(180deg, rgba(18, 22, 30, 1), rgba(12, 14, 18, 1));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: calc(var(--radius-xl) - 4px);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.6), 0 2px 6px rgba(0, 0, 0, 0.4);
  z-index: 1050;
  transition: transform 0.28s cubic-bezier(.2, .9, .2, 1), right 0.25s ease, opacity 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.note-toc__nav {
  max-height: 70vh;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 5px;
}

.note-toc__nav::-webkit-scrollbar {
  width: 4px;
}

.note-toc__nav::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.note-toc__nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

/* Collapsed state */
.note-toc.note-toc--collapsed {
  transform: translateY(-50%) translateX(280px);
  opacity: 1;
  pointer-events: auto;
}

/* Toggle button */
#toc-toggle {
  position: absolute;
  left: -40px;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 8px 0 0 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-right: none;
  background: inherit;
  background-color: rgba(18, 22, 30, 1);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100000;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

#toc-toggle:hover {
  transform: translateY(-50%) scale(1.05);
}

/* TOC Title */
.note-toc__title {
  margin: 0 0 var(--space-sm) 0;
  flex-shrink: 0;
  text-align: left;
  font-size: 1rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.note-toc__title .toc-accent {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  display: inline-block;
}

/* TOC Navigation */
.note-toc__nav {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  overflow-y: auto;
}

.note-toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.note-toc__item {
  margin-bottom: 2px;
}

.note-toc__link {
  display: block;
  padding: 6px 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}

.note-toc__link:hover {
  color: var(--primary);
  background: rgba(0, 217, 255, 0.05);
  border-left-color: rgba(0, 217, 255, 0.3);
}

.note-toc__link.is-active {
  color: var(--primary);
  background: rgba(0, 217, 255, 0.1);
  border-left-color: var(--primary);
  font-weight: 500;
}

/* TOC Level Indentation */
.note-toc__link.toc-level-1 {
  padding-left: 12px;
  font-weight: 600;
  font-size: 0.9rem;
}

.note-toc__link.toc-level-2 {
  padding-left: 24px;
}

.note-toc__link.toc-level-3 {
  padding-left: 36px;
  font-size: 0.8rem;
}

.note-toc__link.toc-level-4,
.note-toc__link.toc-level-5,
.note-toc__link.toc-level-6 {
  padding-left: 48px;
  font-size: 0.78rem;
  color: var(--text-disabled);
}

.note-toc-level-h2 {
  margin-left: var(--space-sm);
}

.note-toc-level-h3 {
  margin-left: calc(var(--space-sm) * 2);
}

.note-toc-level-h4 {
  margin-left: calc(var(--space-sm) * 3);
}

.note-toc-level-h5 {
  margin-left: calc(var(--space-sm) * 3.5);
}

.note-toc-level-h6 {
  margin-left: calc(var(--space-sm) * 4);
}

/* TOC Scrollbar */
.note-toc::-webkit-scrollbar,
.note-toc__nav::-webkit-scrollbar {
  width: 4px;
}

.note-toc::-webkit-scrollbar-track,
.note-toc__nav::-webkit-scrollbar-track {
  background: transparent;
}

.note-toc::-webkit-scrollbar-thumb,
.note-toc__nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
}

.note-toc::-webkit-scrollbar-thumb:hover,
.note-toc__nav::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Desktop TOC Override */
@media (min-width: 769px) {
  .note-toc {
    position: fixed !important;
    right: 28px !important;
    top: 50% !important;
    transform: translateY(-50%) translateZ(0) !important;
    width: 300px !important;
    max-height: 70vh !important;
    z-index: 99999 !important;
    box-shadow: var(--shadow-2xl) !important;
    display: flex !important;
    flex-direction: column !important;
  }

  .note-toc__nav {
    display: flex !important;
    flex-direction: column !important;
    flex-grow: 1 !important;
    overflow-y: auto !important;
    max-height: calc(70vh - 60px) !important;
  }

  .note-toc.note-toc--collapsed {
    transform: translateY(-50%) translateX(120%) !important;
    right: 12px !important;
    opacity: 0.98 !important;
  }
}

/* ========================
   Note TOC Responsive
   ======================== */
@media (max-width: 1400px) {
  .note-content {
    max-width: 100vw;
    padding: var(--space-lg) var(--space-3xl);
    width: 100%;
  }

  .note-toc {
    width: 300px;
    right: 30px;
  }
}

@media (max-width: 1200px) {
  .note-content {
    max-width: 100vw;
    padding: var(--space-lg) var(--space-lg);
    width: 100%;
  }

  .note-toc {
    width: 260px;
    right: 20px;
  }
}

@media (max-width: 1024px) {
  .note-toc__link {
    padding: 5px 10px;
    font-size: 0.82rem;
  }

  .note-toc__link.toc-level-3 {
    padding-left: 28px;
  }

  .note-toc__link.toc-level-4,
  .note-toc__link.toc-level-5,
  .note-toc__link.toc-level-6 {
    padding-left: 36px;
  }

  .note-toc-level-h6 {
    margin-left: calc(var(--space-sm) * 4);
  }
}

@media (max-width: 768px) {
  #toc-toggle {
    display: none;
  }

  .note-toc {
    position: static;
    transform: none;
    right: auto;
    top: auto;
  }

  .note-layout {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    padding-top: calc(4.5rem + var(--space-2xl));
  }

  .note-toc {
    order: -1;
    position: static;
    width: 100%;
    max-height: 50vh;
    top: auto;
    right: auto;
    transform: none;
    margin: var(--space-2xl) 0 var(--space-lg) 0;
    box-shadow: var(--shadow-lg);
  }

  .note-content {
    padding: var(--space-lg);
    max-width: 100%;
    min-height: auto;
    overflow: visible;
  }
}

/* ========================
   Notes Page Styles
   ======================== */
.notes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.notes-header .back-link {
  margin-bottom: 0;
}

.notes-category {
  margin-bottom: var(--space-3xl);
}

.notes-section-title {
  font-size: 1.75rem;
  color: var(--text);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.notes-section-title i {
  color: var(--primary);
}

.note-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.note-icon {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.note-card__header h3 {
  margin: 0 0 var(--space-xs) 0;
  color: var(--text);
  font-size: 1.25rem;
}

.note-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.note-badge--template {
  background: rgba(255, 217, 61, 0.2);
  color: var(--warning);
  border: 1px solid rgba(255, 217, 61, 0.3);
}

.note-badge--tech {
  background: rgba(0, 217, 255, 0.2);
  color: var(--primary);
  border: 1px solid rgba(0, 217, 255, 0.3);
}

.note-badge--data {
  background: rgba(81, 207, 102, 0.2);
  color: var(--success);
  border: 1px solid rgba(81, 207, 102, 0.3);
}

.note-card__description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.note-card__meta {
  margin-bottom: var(--space-lg);
}

.note-meta__item {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.note-card__actions {
  margin-top: auto;
}

.notes-info {
  margin-bottom: var(--space-3xl);
}

.notes-info h2 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.info-item {
  text-align: center;
  padding: var(--space-lg);
  background: rgba(0, 217, 255, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 217, 255, 0.1);
}

.info-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.info-item h4 {
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.info-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.notes-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.stats-item {
  text-align: center;
}

.stats-item h3 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.stats-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

@media (max-width: 768px) {
  .notes-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .notes-stats {
    gap: var(--space-xl);
  }

  .stats-item h3 {
    font-size: 2rem;
  }
}

/* ========================
   Light Theme Overrides
   ======================== */
body[data-theme='light'] .note-content {
  color: var(--text);
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

body[data-theme='light'] .note-content h1,
body[data-theme='light'] .note-content h2,
body[data-theme='light'] .note-content h3,
body[data-theme='light'] .note-content h4 {
  color: var(--text);
}

body[data-theme='light'] .note-content h1 {
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .note-content h2 {
  border-bottom-color: rgba(0, 0, 0, 0.06);
}

body[data-theme='light'] .note-content p,
body[data-theme='light'] .note-content li {
  color: var(--text-secondary);
}

body[data-theme='light'] .note-content a {
  color: var(--primary);
  border-bottom-color: transparent;
}

body[data-theme='light'] .note-content a:hover {
  border-bottom-color: var(--primary);
}

body[data-theme='light'] .note-content pre {
  background: #F4F6F8;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
}

body[data-theme='light'] .note-content code {
  background: rgba(0, 0, 0, 0.06);
  color: #C7254E;
  padding: 2px 6px;
  border-radius: 4px;
}

body[data-theme='light'] .note-content pre code {
  background: transparent;
  color: var(--text);
  padding: 0;
}

body[data-theme='light'] .note-card {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

body[data-theme='light'] .note-card:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .note-badge--tech {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.25);
}

body[data-theme='light'] .note-badge--template {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
}

body[data-theme='light'] .note-badge--data {
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.25);
}

body[data-theme='light'] .info-item {
  background: rgba(37, 99, 235, 0.06);
  border-color: rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .note-toc__link:hover {
  background: rgba(37, 99, 235, 0.06);
  border-left-color: rgba(37, 99, 235, 0.4);
}

body[data-theme='light'] .note-toc__link.is-active {
  background: rgba(37, 99, 235, 0.1);
  border-left-color: var(--primary);
  color: var(--primary);
  font-weight: 600;
}

/* TOC Toggle Button (shared) */
.note-viewer-page .toc-toggle-btn,
.toc-toggle-btn {
    position: fixed;
    bottom: 30px;
    right: 100px;
    width: 45px;
    height: 45px;
    background: var(--surface-elevated);
    border: 2.5px solid var(--border);
    border-radius: 50%;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.toc-toggle-btn:hover {
    background: var(--primary);
    color: #ffffff;
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.4);
}

.note-toc {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.note-toc.note-toc--hidden {
    transform: translateY(-50%) translateX(150%);
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 768px) {
    .toc-toggle-btn {
        bottom: 100px;
        right: 30px;
    }

    .note-toc {
        position: fixed;
        top: 50%;
        right: 20px;
        width: 260px;
        max-height: 60vh;
        transform: translateY(-50%) translateZ(0);
        z-index: 1050;
        order: unset;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        will-change: transform, opacity;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
        isolation: isolate;
    }

    .note-toc.note-toc--hidden {
        transform: translateY(-50%) translateX(150%);
        opacity: 0;
        pointer-events: none;
    }
}