/* ==========================================================================
   MD Viewer — Premium Markdown Documentation Reader
   Theme: Refined Noir · Sora + Source Serif 4 + JetBrains Mono
   ========================================================================== */

/* ── Custom Properties ────────────────────────────────────────────────────── */
.mdv-app {
  /* Palette — Light */
  --mdv-bg:              #F8F7F3;
  --mdv-surface:         #FFFFFF;
  --mdv-surface-2:       #F2F1ED;
  --mdv-border:          rgba(0,0,0,0.08);
  --mdv-border-strong:   rgba(0,0,0,0.14);

  --mdv-sidebar-bg:      #0D0D11;
  --mdv-sidebar-border:  rgba(255,255,255,0.05);
  --mdv-sidebar-text:    #9090A0;
  --mdv-sidebar-hover:   rgba(255,255,255,0.055);
  --mdv-sidebar-active-bg: rgba(255,255,255,0.1);
  --mdv-sidebar-active-text: #FFFFFF;

  --mdv-topbar-bg:       rgba(248,247,243,0.88);
  --mdv-topbar-border:   rgba(0,0,0,0.08);
  --mdv-topbar-text:     #3A3830;

  --mdv-text:            #1C1A18;
  --mdv-text-2:          #5A5650;
  --mdv-text-3:          #8A8780;

  --mdv-accent:          #C9761C;
  --mdv-accent-bg:       rgba(201,118,28,0.1);
  --mdv-accent-border:   rgba(201,118,28,0.25);

  --mdv-code-bg:         #EEEAE2;
  --mdv-code-border:     rgba(0,0,0,0.08);
  --mdv-code-text:       #1C1A18;

  --mdv-toc-bg:          #F8F7F3;
  --mdv-toc-border:      rgba(0,0,0,0.07);
  --mdv-toc-text:        #7A7870;
  --mdv-toc-active:      #1C1A18;

  --mdv-blockquote-border: #C9761C;
  --mdv-blockquote-bg:     rgba(201,118,28,0.06);
  --mdv-blockquote-text:   #5A4A30;

  --mdv-table-head-bg:   #F2F1ED;
  --mdv-table-stripe:    rgba(0,0,0,0.025);
  --mdv-table-border:    rgba(0,0,0,0.08);

  --mdv-check-bg:        #C9761C;
  --mdv-check-border:    rgba(0,0,0,0.18);

  --mdv-shadow-sm:       0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.05);
  --mdv-shadow-md:       0 4px 12px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.06);

  /* Typography */
  --mdv-font-ui:    'Sora', -apple-system, system-ui, sans-serif;
  --mdv-font-body:  'Source Serif 4', Georgia, 'Times New Roman', serif;
  --mdv-font-mono:  'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Layout */
  --mdv-topbar-h:   56px;
  --mdv-sidebar-w:  268px;
  --mdv-toc-w:      228px;

  /* Transitions */
  --mdv-ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --mdv-dur:        180ms;
}

/* Dark Mode Overrides */
.mdv-app.mdv-dark {
  --mdv-bg:              #0F0F12;
  --mdv-surface:         #18181C;
  --mdv-surface-2:       #1E1E23;
  --mdv-border:          rgba(255,255,255,0.07);
  --mdv-border-strong:   rgba(255,255,255,0.12);

  --mdv-topbar-bg:       rgba(15,15,18,0.92);
  --mdv-topbar-border:   rgba(255,255,255,0.07);
  --mdv-topbar-text:     #C8C6C0;

  --mdv-text:            #E8E6DF;
  --mdv-text-2:          #8A8880;
  --mdv-text-3:          #5A5850;

  --mdv-accent:          #F0A030;
  --mdv-accent-bg:       rgba(240,160,48,0.1);
  --mdv-accent-border:   rgba(240,160,48,0.25);

  --mdv-code-bg:         #0A0A0D;
  --mdv-code-border:     rgba(255,255,255,0.07);
  --mdv-code-text:       #D4D0C8;

  --mdv-toc-bg:          #0F0F12;
  --mdv-toc-border:      rgba(255,255,255,0.06);
  --mdv-toc-text:        #5A5858;
  --mdv-toc-active:      #E8E6DF;

  --mdv-blockquote-border: #F0A030;
  --mdv-blockquote-bg:     rgba(240,160,48,0.07);
  --mdv-blockquote-text:   #B0A890;

  --mdv-table-head-bg:   rgba(255,255,255,0.04);
  --mdv-table-stripe:    rgba(255,255,255,0.025);
  --mdv-table-border:    rgba(255,255,255,0.07);

  --mdv-check-border:    rgba(255,255,255,0.18);

  --mdv-shadow-sm:       0 1px 3px rgba(0,0,0,0.3);
  --mdv-shadow-md:       0 4px 16px rgba(0,0,0,0.4);
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */
.mdv-app *,
.mdv-app *::before,
.mdv-app *::after {
  box-sizing: border-box;
}

.mdv-app {
  font-family: var(--mdv-font-ui);
  font-size: 14px;
  line-height: 1.5;
  color: var(--mdv-text);
  background: var(--mdv-bg);
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Shortcode: fills container instead of viewport */
.mdv-app:not(.mdv-fullscreen-page .mdv-app) {
  min-height: 85vh;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.08);
}

/* ── Top Bar ──────────────────────────────────────────────────────────────── */
.mdv-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--mdv-topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px 0 0;
  background: var(--mdv-topbar-bg);
  border-bottom: 1px solid var(--mdv-topbar-border);
  backdrop-filter: blur(12px) saturate(1.5);
  -webkit-backdrop-filter: blur(12px) saturate(1.5);
  flex-shrink: 0;
}

.mdv-topbar__brand {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 20px;
  height: 100%;
  border-right: 1px solid var(--mdv-topbar-border);
  width: var(--mdv-sidebar-w);
  flex-shrink: 0;
  color: var(--mdv-topbar-text);
}

.mdv-brand-icon {
  color: var(--mdv-accent);
  flex-shrink: 0;
}

.mdv-brand-name {
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: -0.01em;
  color: var(--mdv-topbar-text);
}

.mdv-topbar__meta {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  opacity: 0;
  transition: opacity var(--mdv-dur) var(--mdv-ease);
}

.mdv-topbar__meta.mdv-visible {
  opacity: 1;
}

.mdv-filename {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--mdv-topbar-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.mdv-meta-dot {
  color: var(--mdv-text-3);
  flex-shrink: 0;
}

.mdv-wordcount {
  font-size: 12px;
  color: var(--mdv-text-3);
  white-space: nowrap;
  flex-shrink: 0;
}

.mdv-topbar__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.mdv-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mdv-font-ui);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--mdv-dur) var(--mdv-ease);
  white-space: nowrap;
  text-decoration: none;
}

.mdv-btn--upload {
  padding: 6px 12px;
  border-radius: 7px;
  border: 1px solid var(--mdv-border-strong);
  color: var(--mdv-topbar-text);
  background: var(--mdv-surface);
  box-shadow: var(--mdv-shadow-sm);
}

.mdv-btn--upload:hover {
  background: var(--mdv-surface-2);
  border-color: var(--mdv-border-strong);
}

.mdv-btn--upload input[type="file"] {
  display: none;
}

.mdv-btn--icon {
  width: 34px;
  height: 34px;
  justify-content: center;
  border-radius: 7px;
  border: 1px solid var(--mdv-border);
  color: var(--mdv-text-2);
  background: var(--mdv-surface);
  box-shadow: var(--mdv-shadow-sm);
}

.mdv-btn--icon:hover {
  color: var(--mdv-text);
  background: var(--mdv-surface-2);
}

/* Sun/moon icon swap */
.mdv-icon-moon { display: none; }
.mdv-dark .mdv-icon-sun  { display: none; }
.mdv-dark .mdv-icon-moon { display: block; }

/* ── Drop Zone ────────────────────────────────────────────────────────────── */
.mdv-dropzone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--mdv-dur) var(--mdv-ease);
  background: var(--mdv-bg);
  outline: none;
}

.mdv-dropzone:focus-visible {
  outline: 2px solid var(--mdv-accent);
  outline-offset: -4px;
}

.mdv-dropzone__inner {
  text-align: center;
  max-width: 360px;
  padding: 48px 24px;
  border-radius: 16px;
  border: 1.5px dashed var(--mdv-border-strong);
  transition: all var(--mdv-dur) var(--mdv-ease);
  background: var(--mdv-surface);
}

.mdv-dropzone:hover .mdv-dropzone__inner,
.mdv-dropzone--active .mdv-dropzone__inner {
  border-color: var(--mdv-accent);
  background: var(--mdv-accent-bg);
}

.mdv-dropzone__icon-wrap {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mdv-text-3);
  transition: color var(--mdv-dur) var(--mdv-ease);
}

.mdv-dropzone:hover .mdv-dropzone__icon-wrap,
.mdv-dropzone--active .mdv-dropzone__icon-wrap {
  color: var(--mdv-accent);
}

.mdv-dropzone__title {
  font-family: var(--mdv-font-ui);
  font-size: 17px;
  font-weight: 600;
  color: var(--mdv-text);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.mdv-dropzone__sub {
  font-size: 13.5px;
  color: var(--mdv-text-2);
  margin: 0 0 14px;
}

.mdv-dropzone__hint {
  font-size: 11.5px;
  color: var(--mdv-text-3);
  margin: 0;
  line-height: 1.6;
}

/* ── Main Layout (3-column grid) ──────────────────────────────────────────── */
.mdv-main {
  flex: 1;
  display: grid;
  grid-template-columns: var(--mdv-sidebar-w) 1fr var(--mdv-toc-w);
  min-height: 0;
  overflow: hidden;
}

/* ── Left Sidebar ─────────────────────────────────────────────────────────── */
.mdv-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--mdv-sidebar-bg);
  border-right: 1px solid var(--mdv-sidebar-border);
  overflow: hidden;
}

.mdv-sidebar__top {
  padding: 14px 12px 10px;
  border-bottom: 1px solid var(--mdv-sidebar-border);
  flex-shrink: 0;
}

.mdv-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.mdv-search-icon {
  position: absolute;
  left: 10px;
  color: #4A4A5A;
  pointer-events: none;
  flex-shrink: 0;
}

.mdv-search {
  width: 100%;
  padding: 7px 28px 7px 30px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 7px;
  color: #D0D0D8;
  font-family: var(--mdv-font-ui);
  font-size: 12.5px;
  outline: none;
  transition: all var(--mdv-dur) var(--mdv-ease);
}

.mdv-search::placeholder { color: #4A4A5A; }
.mdv-search:focus {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.15);
  color: #F0F0F8;
}

.mdv-search-clear {
  position: absolute;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  color: #5A5A6A;
  border-radius: 3px;
  transition: color var(--mdv-dur);
}
.mdv-search-clear:hover { color: #A0A0B0; }

.mdv-sidebar__files {
  flex: 1;
  overflow-y: auto;
  padding: 8px 8px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.mdv-sidebar__files::-webkit-scrollbar { width: 4px; }
.mdv-sidebar__files::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
}

.mdv-file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.mdv-file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 7px;
  cursor: pointer;
  color: var(--mdv-sidebar-text);
  font-size: 12.5px;
  line-height: 1.4;
  transition: all var(--mdv-dur) var(--mdv-ease);
  min-width: 0;
  position: relative;
  animation: mdv-slide-in var(--mdv-dur) var(--mdv-ease) both;
}

@keyframes mdv-slide-in {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

.mdv-file-item:hover {
  background: var(--mdv-sidebar-hover);
  color: #D0D0D8;
}

.mdv-file-item--active {
  background: var(--mdv-sidebar-active-bg);
  color: var(--mdv-sidebar-active-text);
  font-weight: 500;
}

.mdv-file-item--active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--mdv-accent);
  border-radius: 0 2px 2px 0;
}

.mdv-file-icon {
  flex-shrink: 0;
  display: flex;
  color: #4A4A6A;
}

.mdv-file-item--active .mdv-file-icon { color: var(--mdv-accent); }

.mdv-file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}

.mdv-file-name mark.mdv-match {
  background: rgba(201,118,28,0.3);
  color: #F0C060;
  border-radius: 2px;
  padding: 0 1px;
}
.mdv-dark .mdv-file-name mark.mdv-match {
  background: rgba(240,160,48,0.25);
  color: #F5C060;
}

.mdv-file-remove {
  flex-shrink: 0;
  display: none;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: 4px;
  color: #6A6A7A;
  cursor: pointer;
  transition: all var(--mdv-dur);
  padding: 0;
}

.mdv-file-item:hover .mdv-file-remove { display: flex; }
.mdv-file-remove:hover { background: rgba(220,50,50,0.2); color: #FF7070; }

.mdv-file-empty {
  padding: 16px 10px;
  color: #4A4A5A;
  font-size: 12px;
  font-style: italic;
  list-style: none;
}

.mdv-sidebar__bottom {
  padding: 10px 12px;
  border-top: 1px solid var(--mdv-sidebar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.mdv-file-count {
  font-size: 11px;
  color: #3A3A4A;
}

.mdv-clear-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mdv-font-ui);
  font-size: 11px;
  color: #4A4A5A;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 5px;
  transition: all var(--mdv-dur);
}

.mdv-clear-btn:hover { color: #EF4444; background: rgba(239,68,68,0.12); }

/* ── Content Area ─────────────────────────────────────────────────────────── */
.mdv-content-area {
  overflow-y: auto;
  scroll-behavior: smooth;
  background: var(--mdv-bg);
  scrollbar-width: thin;
  scrollbar-color: var(--mdv-border-strong) transparent;
}

.mdv-content-area::-webkit-scrollbar { width: 5px; }
.mdv-content-area::-webkit-scrollbar-thumb {
  background: var(--mdv-border-strong);
  border-radius: 3px;
}

.mdv-prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 52px 48px 80px;
}

/* ── Prose Typography ─────────────────────────────────────────────────────── */
.mdv-prose { font-family: var(--mdv-font-body); color: var(--mdv-text); }

.mdv-prose h1,
.mdv-prose h2,
.mdv-prose h3,
.mdv-prose h4,
.mdv-prose h5,
.mdv-prose h6 {
  font-family: var(--mdv-font-ui);
  font-weight: 600;
  color: var(--mdv-text);
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 0;
  scroll-margin-top: calc(var(--mdv-topbar-h) + 24px);
}

.mdv-prose h1 { font-size: 32px; margin-bottom: 8px; padding-bottom: 16px; border-bottom: 1px solid var(--mdv-border); margin-bottom: 24px; }
.mdv-prose h2 { font-size: 22px; margin-top: 48px; margin-bottom: 16px; padding-top: 8px; }
.mdv-prose h3 { font-size: 17px; margin-top: 36px; margin-bottom: 12px; }
.mdv-prose h4 { font-size: 15px; margin-top: 28px; margin-bottom: 10px; font-weight: 600; }
.mdv-prose h5 { font-size: 13.5px; margin-top: 20px; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--mdv-text-2); font-weight: 600; }
.mdv-prose h6 { font-size: 13px; margin-top: 16px; margin-bottom: 8px; color: var(--mdv-text-2); }

/* Heading anchor on hover */
.mdv-prose h1::before,
.mdv-prose h2::before,
.mdv-prose h3::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 0.9em;
  background: var(--mdv-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: middle;
  opacity: 0;
  transition: opacity var(--mdv-dur);
}
.mdv-prose h1:hover::before,
.mdv-prose h2:hover::before,
.mdv-prose h3:hover::before { opacity: 1; }

.mdv-prose p {
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--mdv-text);
  margin: 0 0 18px;
}

.mdv-prose a {
  color: var(--mdv-accent);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--mdv-dur);
}
.mdv-prose a:hover { text-decoration-color: var(--mdv-accent); }

/* Lists */
.mdv-prose ul, .mdv-prose ol {
  margin: 0 0 18px 0;
  padding-left: 24px;
}
.mdv-prose li {
  font-size: 16.5px;
  line-height: 1.7;
  margin-bottom: 6px;
  color: var(--mdv-text);
}
.mdv-prose li::marker { color: var(--mdv-accent); }
.mdv-prose ol li::marker { font-family: var(--mdv-font-ui); font-weight: 600; font-size: 13px; }

/* Task list items */
.mdv-prose .mdv-task-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  list-style: none;
  margin-left: -24px;
}

.mdv-prose .mdv-checkbox {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--mdv-check-border);
  flex-shrink: 0;
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--mdv-dur);
}

.mdv-prose .mdv-checkbox--checked {
  background: var(--mdv-check-bg);
  border-color: var(--mdv-check-bg);
}

.mdv-prose .mdv-task-item.mdv-checked > span:last-child {
  opacity: 0.55;
  text-decoration: line-through;
}

/* Inline code */
.mdv-prose :not(pre) > code {
  font-family: var(--mdv-font-mono);
  font-size: 13px;
  background: var(--mdv-code-bg);
  border: 1px solid var(--mdv-code-border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--mdv-code-text);
  white-space: nowrap;
}

/* Code Blocks */
.mdv-code-block {
  margin: 4px 0 24px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.07);
  background: #0D1117;
  box-shadow: var(--mdv-shadow-md);
}

.mdv-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 16px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mdv-code-lang {
  font-family: var(--mdv-font-mono);
  font-size: 11px;
  color: #6A7080;
  text-transform: lowercase;
  letter-spacing: 0.05em;
}

.mdv-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mdv-font-ui);
  font-size: 11px;
  color: #6A7080;
  background: none;
  border: none;
  cursor: pointer;
  padding: 3px 8px;
  border-radius: 5px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--mdv-dur);
}
.mdv-copy-btn:hover { color: #A8B0C0; background: rgba(255,255,255,0.06); }

.mdv-code-block pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  background: transparent !important;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.mdv-code-block pre code {
  font-family: var(--mdv-font-mono) !important;
  font-size: 13px !important;
  line-height: 1.65 !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  white-space: pre;
}

/* Blockquote */
.mdv-blockquote {
  margin: 4px 0 24px;
  padding: 14px 20px;
  border-left: 3px solid var(--mdv-blockquote-border);
  background: var(--mdv-blockquote-bg);
  border-radius: 0 8px 8px 0;
  color: var(--mdv-blockquote-text);
  font-style: italic;
}
.mdv-blockquote p { font-size: 16px; margin: 0; color: inherit; }
.mdv-blockquote p + p { margin-top: 10px; }

/* Tables */
.mdv-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 4px 0 24px;
  border-radius: 8px;
  border: 1px solid var(--mdv-table-border);
  box-shadow: var(--mdv-shadow-sm);
}

.mdv-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mdv-font-ui);
  font-size: 13.5px;
}

.mdv-table th {
  background: var(--mdv-table-head-bg);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mdv-text-2);
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--mdv-table-border);
}

.mdv-table td {
  padding: 10px 16px;
  color: var(--mdv-text);
  border-bottom: 1px solid var(--mdv-table-border);
  line-height: 1.5;
}

.mdv-table tr:last-child td { border-bottom: none; }
.mdv-table tbody tr:nth-child(even) { background: var(--mdv-table-stripe); }
.mdv-table tbody tr:hover { background: var(--mdv-accent-bg); }

/* Horizontal rule */
.mdv-prose hr {
  border: none;
  border-top: 1px solid var(--mdv-border);
  margin: 36px 0;
}

/* Images */
.mdv-prose img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--mdv-shadow-md);
  margin: 4px 0 24px;
}

/* Strong / Em */
.mdv-prose strong { font-weight: 700; color: var(--mdv-text); }
.mdv-prose em { font-style: italic; }

/* Frontmatter Badge */
.mdv-frontmatter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  padding: 10px 14px;
  background: var(--mdv-surface-2);
  border: 1px solid var(--mdv-border);
  border-radius: 8px;
  font-family: var(--mdv-font-ui);
  font-size: 12px;
  color: var(--mdv-text-2);
}

.mdv-frontmatter span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ── TOC Panel ────────────────────────────────────────────────────────────── */
.mdv-toc-panel {
  display: flex;
  flex-direction: column;
  background: var(--mdv-toc-bg);
  border-left: 1px solid var(--mdv-toc-border);
  overflow-y: auto;
  scrollbar-width: none;
}

.mdv-toc-panel::-webkit-scrollbar { display: none; }

.mdv-toc-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 20px 16px 12px;
  font-family: var(--mdv-font-ui);
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mdv-toc-text);
  background: var(--mdv-toc-bg);
  border-bottom: 1px solid var(--mdv-toc-border);
}

.mdv-toc-list {
  list-style: none;
  margin: 0;
  padding: 10px 0 24px;
}

.mdv-toc-item {
  display: block;
}

.mdv-toc-item a {
  display: block;
  padding: 5px 16px;
  font-family: var(--mdv-font-ui);
  font-size: 12px;
  line-height: 1.5;
  color: var(--mdv-toc-text);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all var(--mdv-dur) var(--mdv-ease);
  word-break: break-word;
}

.mdv-toc-item a:hover {
  color: var(--mdv-text);
  border-left-color: var(--mdv-border-strong);
}

.mdv-toc-item--active > a {
  color: var(--mdv-toc-active);
  border-left-color: var(--mdv-accent);
  font-weight: 500;
  background: var(--mdv-accent-bg);
}

.mdv-toc-level-1 > a { padding-left: 16px; font-weight: 500; }
.mdv-toc-level-2 > a { padding-left: 28px; }
.mdv-toc-level-3 > a { padding-left: 40px; font-size: 11.5px; opacity: 0.85; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .mdv-toc-panel { display: none; }
  .mdv-main { grid-template-columns: var(--mdv-sidebar-w) 1fr; }
}

@media (max-width: 768px) {
  .mdv-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    position: relative;
  }

  .mdv-sidebar {
    display: none;
  }

  .mdv-topbar__brand {
    width: auto;
    padding: 0 16px;
    border-right: none;
  }

  .mdv-prose {
    padding: 32px 20px 60px;
  }

  .mdv-btn--upload span { display: none; }
  .mdv-btn--upload { padding: 6px 10px; }
}

/* ── Utility: hidden ──────────────────────────────────────────────────────── */
.mdv-hidden { display: none !important; }

/* ── Selection ────────────────────────────────────────────────────────────── */
.mdv-prose ::selection {
  background: var(--mdv-accent-bg);
  color: var(--mdv-text);
}

/* ── Focus Styles ─────────────────────────────────────────────────────────── */
.mdv-app *:focus-visible {
  outline: 2px solid var(--mdv-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Print ────────────────────────────────────────────────────────────────── */
@media print {
  .mdv-topbar, .mdv-sidebar, .mdv-toc-panel { display: none !important; }
  .mdv-main { display: block; }
  .mdv-prose { max-width: none; padding: 0; }
}