/* ==========================================================================
   Modern Clean Link, Typography & Mobile Viewport Styling for Notes & Insights
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Mobile Viewport & Single-Column Layout (iPhone / Tablets <= 1024px)
   -------------------------------------------------------------------------- */

html {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  position: relative;
  min-width: 0 !important;
}

@media only screen and (max-width: 1024px) {
  /* Replace broken 3-column desktop grid with clean single-column flex */
  body,
  body:has(#sidebar) {
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: none !important;
    grid-template-areas: none !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  main,
  #main-content,
  #sidebar + main {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 1rem auto 3rem !important;
    padding: 0 1.25rem !important;
    box-sizing: border-box !important;
  }

  #sidebar {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   2. Code Blocks & Overflow Isolation (Only Code & Tables Scroll Horizontally)
   -------------------------------------------------------------------------- */

main,
article,
#main-content,
.post-nav-item,
#post-nav,
#site-nav,
#site-footer,
#article-list {
  min-width: 0 !important;
  box-sizing: border-box !important;
}

/* Code blocks strictly contained with isolated scroll */
pre,
pre.giallo,
pre.z-code {
  display: block !important;
  max-width: 100% !important;
  width: 100% !important;
  overflow-x: auto !important;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch !important;
  box-sizing: border-box !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}

pre code {
  white-space: pre !important;
  word-break: normal !important;
  overflow-wrap: normal !important;
}

/* Post navigation wrapping */
#post-nav .post-title {
  max-width: 100% !important;
  white-space: normal !important;
  word-break: break-word !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
}

/* Tables: horizontal scroll container */
table {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch !important;
  border-collapse: collapse;
}

/* KaTeX Formulas: contained scrolling */
.katex-display {
  max-width: 100% !important;
  overflow-x: auto !important;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch !important;
}

/* Responsive Media */
img,
svg,
video,
iframe {
  max-width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   3. Proportional, Balanced Headings (Compact H1, No Overflow)
   -------------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.025em;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* Post Title (H1) */
h1,
article #heading h1,
main > h1 {
  font-size: clamp(1.6rem, 2.8vw + 0.6rem, 2.2rem);
  line-height: 1.25;
  margin: 0.85rem 0 1rem 0;
}

/* Section Headings (H2) */
h2,
article h2 {
  font-size: clamp(1.3rem, 2.2vw + 0.4rem, 1.6rem);
  line-height: 1.3;
  margin: 2.25rem 0 0.85rem 0;
}

/* Sub-sections (H3) */
h3,
article h3 {
  font-size: clamp(1.1rem, 1.6vw + 0.35rem, 1.3rem);
  line-height: 1.35;
  margin: 1.75rem 0 0.65rem 0;
}

/* Mobile Headings */
@media (max-width: 640px) {
  h1,
  article #heading h1,
  main > h1 {
    font-size: 1.55rem !important;
    line-height: 1.28 !important;
    margin: 0.5rem 0 0.75rem 0 !important;
  }

  h2,
  article h2 {
    font-size: 1.3rem !important;
    line-height: 1.3 !important;
    margin: 1.75rem 0 0.65rem 0 !important;
  }

  h3,
  article h3 {
    font-size: 1.15rem !important;
    line-height: 1.35 !important;
  }
}

/* --------------------------------------------------------------------------
   4. Modern Clean Links
   -------------------------------------------------------------------------- */

/* Base links: clean, no clunky dotted/wavy default decorations */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease, text-underline-offset 0.2s ease;
}

/* Article prose links: subtle, elegant underline */
article p a,
article li a,
article blockquote a,
article td a,
main > p a,
main > ul a:not(.tag),
main > ol a {
  text-decoration: underline;
  text-decoration-style: solid;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3.5px;
  text-decoration-color: rgba(56, 189, 248, 0.38);
}

/* Light mode underline opacity */
[data-theme="light"] article p a,
[data-theme="light"] article li a,
[data-theme="light"] article blockquote a,
[data-theme="light"] article td a,
[data-theme="light"] main > p a {
  text-decoration-color: rgba(37, 99, 235, 0.35);
}

/* Hover state: smooth accent glow */
article p a:hover,
article li a:hover,
article blockquote a:hover,
article td a:hover,
main > p a:hover,
main > ul a:not(.tag):hover,
main > ol a:hover {
  text-decoration-style: solid !important;
  text-decoration-color: var(--accent-color) !important;
  text-underline-offset: 4.5px;
}

/* Headings, article cards, navigation, tags, badges: strictly clean without underline */
h1 a, h2 a, h3 a, h4 a, h5 a, h6 a,
#article-list article h3 a,
#article-list article a,
.tags a,
.tag,
#site-nav a,
#site-footer a,
#post-nav a,
#buttons-container a,
.badge {
  text-decoration: none !important;
}

/* Card title hover interaction */
#article-list article:hover h3 a {
  color: var(--accent-color);
}

/* Table of Contents links */
#toc a,
#sidebar a {
  text-decoration: none !important;
  transition: color 0.15s ease;
}

#toc a:hover,
#sidebar a:hover {
  color: var(--accent-color);
}


/* --------------------------------------------------------------------------
   5. Medium-Style Image Zoom Lightbox
   -------------------------------------------------------------------------- */

img.zoomable-img {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  border-radius: 8px;
}

img.zoomable-img:hover {
  filter: brightness(1.04);
}

.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.zoom-overlay.zoom-active {
  opacity: 1;
  pointer-events: auto;
}

.zoom-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: zoom-out;
}

.zoom-content {
  position: relative;
  max-width: 94vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
}

.zoom-target-img {
  max-width: 94vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 35px rgba(56, 189, 248, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: zoom-out;
  animation: zoomImgIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes zoomImgIn {
  from {
    transform: scale(0.92);
    opacity: 0.8;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.zoom-caption {
  margin-top: 14px;
  color: #94a3b8;
  font-size: 13px;
  font-family: "JetBrains Mono", monospace;
  text-align: center;
  background: rgba(15, 23, 42, 0.8);
  padding: 4px 14px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.zoom-close-btn {
  position: absolute;
  top: -42px;
  right: 0;
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.15s ease;
}

.zoom-close-btn:hover {
  background: #ef4444;
  color: #fff;
  border-color: #ef4444;
  transform: scale(1.1);
}

body.zoom-lock-scroll {
  overflow: hidden !important;
}

/* --------------------------------------------------------------------------
   6. Modern Hybrid Navigation & Slide-Out Drawer (Theme-Adaptive)
   -------------------------------------------------------------------------- */

/* Prevent body scroll when drawer is open */
body.nav-drawer-locked {
  overflow: hidden !important;
}

#site-nav.site-nav-header {
  position: sticky !important;
  top: 0.75rem !important;
  z-index: 1000 !important;
  width: 100% !important;
  max-width: min(var(--container-width, 1180px), 94vw) !important;
  margin: 0 auto !important;
  padding: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  border: none !important;
}

#site-nav.site-nav-header::before {
  display: none !important;
}

.nav-bar-container {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  background: var(--glass-bg) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border: 1px solid var(--fg-muted-2) !important;
  border-radius: 9999px !important;
  padding: 0.4rem 0.65rem 0.4rem 0.9rem !important;
  box-shadow: var(--shadow-glass), var(--edge-highlight) !important;
  transition: border-color 0.25s ease, box-shadow 0.25s ease !important;
}

.nav-bar-container:hover {
  border-color: var(--accent-color) !important;
}

/* Brand Link */
.nav-brand-pill {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.5rem !important;
  text-decoration: none !important;
  color: var(--fg-color) !important;
  font-weight: 700 !important;
  font-size: 14.5px !important;
  letter-spacing: -0.01em !important;
  transition: transform 0.2s ease, opacity 0.2s ease !important;
}

.nav-brand-pill:hover {
  opacity: 0.85 !important;
  transform: translateY(-1px) !important;
}

.brand-emoji {
  font-size: 16px !important;
}

.brand-name {
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  max-width: 220px !important;
}

/* Action Buttons */
.nav-top-actions {
  display: flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
}

.nav-icon-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 36px !important;
  height: 36px !important;
  border-radius: 50% !important;
  border: 1px solid var(--fg-muted-2) !important;
  background: var(--fg-muted-1) !important;
  color: var(--fg-muted-5) !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
  padding: 0 !important;
}

.nav-icon-btn:hover {
  background: var(--fg-muted-2) !important;
  color: var(--fg-color) !important;
  border-color: var(--fg-muted-3) !important;
  transform: scale(1.06) !important;
}

.nav-action-svg {
  width: 17px !important;
  height: 17px !important;
}

/* Menu Toggle Pill */
.nav-menu-toggle-btn {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.45rem !important;
  padding: 0.38rem 0.85rem !important;
  border-radius: 9999px !important;
  background: var(--accent-color-alpha) !important;
  border: 1px solid var(--accent-color) !important;
  color: var(--accent-color) !important;
  font-size: 13.5px !important;
  font-weight: 600 !important;
  font-family: inherit !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
}

.nav-menu-toggle-btn:hover {
  background: var(--accent-color) !important;
  color: var(--contrast-color, #ffffff) !important;
  box-shadow: 0 0 15px var(--accent-color-alpha) !important;
}

.menu-hamburger-svg {
  width: 16px !important;
  height: 16px !important;
}

/* --------------------------------------------------------------------------
   7. Slide-Out Drawer Navigation Panel (Theme-Adaptive)
   -------------------------------------------------------------------------- */
.drawer-backdrop {
  position: fixed !important;
  inset: 0 !important;
  background: rgba(0, 0, 0, 0.5) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
  z-index: 9998 !important;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease !important;
}

.drawer-backdrop.open {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
}

.site-drawer {
  position: fixed !important;
  top: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: min(360px, 88vw) !important;
  height: 100vh !important;
  background: var(--bg-color) !important;
  backdrop-filter: blur(28px) !important;
  -webkit-backdrop-filter: blur(28px) !important;
  border-left: 1px solid var(--fg-muted-2) !important;
  box-shadow: -15px 0 50px rgba(0, 0, 0, 0.4) !important;
  z-index: 9999 !important;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1) !important;
  display: flex !important;
  flex-direction: column !important;
  overflow: hidden !important;
}

.site-drawer.open {
  transform: translateX(0) !important;
}

.drawer-header-bar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 1.25rem 1.25rem 1rem !important;
  border-bottom: 1px solid var(--fg-muted-2) !important;
}

.drawer-brand {
  display: flex !important;
  align-items: center !important;
  gap: 0.5rem !important;
}

.drawer-emoji {
  font-size: 18px !important;
}

.drawer-brand-name {
  color: var(--fg-color) !important;
  font-weight: 700 !important;
  font-size: 15px !important;
}

.drawer-dismiss-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 32px !important;
  height: 32px !important;
  border-radius: 50% !important;
  background: var(--fg-muted-1) !important;
  border: 1px solid var(--fg-muted-2) !important;
  color: var(--fg-muted-5) !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
}

.drawer-dismiss-btn:hover {
  background: #ef4444 !important;
  color: #ffffff !important;
  border-color: #ef4444 !important;
  transform: scale(1.08) !important;
}

.drawer-scroll-body {
  flex: 1 !important;
  overflow-y: auto !important;
  padding: 1.25rem !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 1.75rem !important;
}

.drawer-group {
  display: flex !important;
  flex-direction: column !important;
  gap: 0.6rem !important;
}

.drawer-group-title {
  color: var(--fg-muted-4) !important;
  font-size: 11.5px !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.06em !important;
  padding-left: 0.25rem !important;
}

.drawer-nav-items {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.4rem !important;
}

.drawer-row-link {
  display: flex !important;
  align-items: center !important;
  gap: 0.85rem !important;
  padding: 0.7rem 0.85rem !important;
  border-radius: 12px !important;
  text-decoration: none !important;
  background: var(--fg-muted-1) !important;
  border: 1px solid transparent !important;
  transition: all 0.2s ease !important;
}

.drawer-row-link:hover {
  background: var(--fg-muted-2) !important;
  border-color: var(--fg-muted-3) !important;
  transform: translateX(3px) !important;
}

.drawer-row-link.active {
  background: var(--accent-color-alpha) !important;
  border-color: var(--accent-color) !important;
}

.drawer-row-icon {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 36px !important;
  height: 36px !important;
  border-radius: 10px !important;
  background: var(--fg-muted-2) !important;
  color: var(--fg-muted-5) !important;
  flex-shrink: 0 !important;
}

.drawer-row-link:hover .drawer-row-icon {
  color: var(--accent-color) !important;
  background: var(--accent-color-alpha) !important;
}

.drawer-row-link.active .drawer-row-icon {
  background: var(--accent-color) !important;
  color: var(--contrast-color, #ffffff) !important;
}

.drawer-row-icon svg {
  width: 18px !important;
  height: 18px !important;
}

.drawer-row-text {
  display: flex !important;
  flex-direction: column !important;
  gap: 0.15rem !important;
}

.drawer-row-title {
  color: var(--fg-color) !important;
  font-size: 14.5px !important;
  font-weight: 600 !important;
}

.drawer-row-link.active .drawer-row-title {
  color: var(--accent-color) !important;
}

.drawer-row-caption {
  color: var(--fg-muted-4) !important;
  font-size: 12px !important;
}

/* Utilities Grid Cards */
.drawer-grid-cards {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 0.5rem !important;
}

.drawer-action-card {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.5rem !important;
  padding: 0.75rem 0.5rem !important;
  border-radius: 10px !important;
  background: var(--fg-muted-1) !important;
  border: 1px solid var(--fg-muted-2) !important;
  color: var(--fg-color) !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  text-decoration: none !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
}

.drawer-action-card:hover {
  background: var(--accent-color-alpha) !important;
  border-color: var(--accent-color) !important;
  color: var(--accent-color) !important;
}

.drawer-action-card svg {
  width: 16px !important;
  height: 16px !important;
  color: var(--fg-muted-5) !important;
}

.drawer-action-card:hover svg {
  color: var(--accent-color) !important;
}

/* --------------------------------------------------------------------------
   8. Clean Search Modal Overlay (Theme-Adaptive)
   -------------------------------------------------------------------------- */
#search-container.site-search-modal {
  position: fixed !important;
  inset: 0 !important;
  z-index: 10005 !important;
  display: flex !important;
  align-items: flex-start !important;
  justify-content: center !important;
  padding-top: 10vh !important;
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: none !important;
  height: 100vh !important;
  width: 100vw !important;
  transition: opacity 0.2s ease, visibility 0.2s ease !important;
}

#search-container.site-search-modal.active {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
}

.search-modal-backdrop {
  position: absolute !important;
  inset: 0 !important;
  background: rgba(0, 0, 0, 0.6) !important;
  backdrop-filter: blur(10px) !important;
  -webkit-backdrop-filter: blur(10px) !important;
}

.search-modal-card {
  position: relative !important;
  width: min(580px, 92vw) !important;
  background: var(--bg-color) !important;
  border: 1px solid var(--accent-color) !important;
  border-radius: 16px !important;
  box-shadow: var(--shadow-glass), 0 25px 50px -12px rgba(0, 0, 0, 0.5) !important;
  overflow: hidden !important;
  z-index: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  max-height: 75vh !important;
}

.search-modal-header {
  display: flex !important;
  align-items: center !important;
  padding: 0.85rem 1rem !important;
  border-bottom: 1px solid var(--fg-muted-2) !important;
  gap: 0.75rem !important;
}

.search-icon {
  width: 18px !important;
  height: 18px !important;
  color: var(--accent-color) !important;
  flex-shrink: 0 !important;
}

#search-bar {
  flex: 1 !important;
  background: transparent !important;
  border: none !important;
  outline: none !important;
  color: var(--fg-color) !important;
  font-size: 15px !important;
  font-family: inherit !important;
}

.search-modal-close {
  background: transparent !important;
  border: none !important;
  color: var(--fg-muted-4) !important;
  font-size: 16px !important;
  cursor: pointer !important;
  padding: 0.25rem 0.5rem !important;
  border-radius: 6px !important;
  transition: all 0.15s ease !important;
}

.search-modal-close:hover {
  color: var(--fg-color) !important;
  background: var(--fg-muted-2) !important;
}

#search-results-container {
  overflow-y: auto !important;
  max-height: calc(75vh - 60px) !important;
  padding: 0.5rem 0.75rem 1rem !important;
}

@media (max-width: 640px) {
  #site-nav.site-nav-header {
    top: 0.4rem !important;
    max-width: 96vw !important;
  }
  .nav-bar-container {
    padding: 0.35rem 0.5rem 0.35rem 0.75rem !important;
  }
  .brand-name {
    max-width: 140px !important;
    font-size: 13.5px !important;
  }
  .nav-menu-toggle-btn {
    padding: 0.32rem 0.65rem !important;
    font-size: 12.5px !important;
  }
}