*, *::before, *::after { box-sizing: border-box; }

:root {
  --sidebar-width: 280px;
  --menu-bar-height: 68px;
  --body-font: "Open Sans", "Inter", system-ui, sans-serif;
  --mono-font: "JetBrains Mono", monospace;
}

html, body { margin: 0; height: 100%; }
body {
  font-family: var(--body-font);
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.25s ease;
}
a { cursor: pointer; text-decoration: none; color: var(--links); }

#body-container {
  position: relative;
  min-height: 100vh;
  background-color: var(--bg);
}

.bg-animation {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 20%, var(--bg-effect-primary) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, var(--bg-effect-secondary) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(246, 25, 0, 0.04) 0%, transparent 40%);
  animation: bg-drift 28s ease-in-out infinite alternate;
  transition: opacity 0.35s;
}

.grid-overlay {
  position: fixed; inset: 0; pointer-events: none; z-index: 1;
  background-image:
    linear-gradient(var(--grid-overlay-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-overlay-color) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: 0.75;
  animation: grid-float 40s linear infinite;
}

.particles { position: fixed; inset: 0; pointer-events: none; z-index: 2; overflow: hidden; }

.particle {
  position: absolute;
  width: var(--particle-w);
  height: var(--particle-h);
  background: var(--particle-color);
  border-radius: var(--particle-shape);
  opacity: 0;
  filter: blur(0.15px);
  box-shadow: 0 0 7px var(--particle-glow), 0 0 16px var(--particle-glow-soft);
  animation: float-particle var(--p-dur, 16s) infinite;
  animation-delay: var(--p-delay, 0s);
}

@keyframes bg-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-2%, 1%, 0) scale(1.04); }
}
@keyframes grid-float {
  0%   { background-position: 0 0, 0 0; }
  100% { background-position: 60px 30px, 30px 60px; }
}
@keyframes float-particle {
  0%   { transform: translate3d(var(--px), 100vh, 0) rotate(0deg); opacity: 0; }
  10%  { opacity: 0.85; }
  90%  { opacity: 0.85; }
  100% { transform: translate3d(calc(var(--px) * 1.4), -120vh, 0) rotate(720deg); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .bg-animation, .grid-overlay, .particles { display: none !important; }
}

.page-wrapper {
  position: relative; z-index: 5;
  min-height: 100vh;
  display: flex; flex-direction: column;
}

#menu-bar {
  position: sticky; top: 0; z-index: 106;
  height: var(--menu-bar-height);
  background: var(--menu-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--table-border-color);
  box-shadow: 0 1px 0 var(--menu-border-red);
  transition: background 0.35s;
}

.menu-bar-container {
  max-width: 1600px; margin: 0 auto; height: 100%;
  padding: 0 16px 0 20px;
  display: flex; align-items: center; gap: 12px;
}

.menu-brand {
  display: inline-block; max-width: 100%;
  line-height: 1.15; flex-shrink: 0; text-decoration: none;
  font-size: 23px;
}
.menu-brand:hover { text-decoration: none; }
.menu-brand-anchor { display: block; width: fit-content; max-width: 100%; }
.menu-logo {
  font-weight: 700; font-size: 1em;
  color: var(--heading-color, var(--fg));
  white-space: nowrap;
}
.menu-logo span { color: var(--links); }
.menu-handle {
  display: block; width: 100%; box-sizing: border-box;
  font-family: var(--mono-font); font-size: 1em; font-weight: 600;
  color: var(--brand-handle-color, var(--links));
  letter-spacing: 0; margin-top: 0.15em;
  white-space: nowrap;
  text-shadow: 0 0 12px color-mix(in srgb, var(--brand-handle-color, var(--links)) 28%, transparent);
}

.menu-tagline {
  font-family: var(--mono-font); font-size: 11px;
  color: color-mix(in srgb, var(--fg) 42%, transparent);
  display: none;
}
@media (min-width: 960px) { .menu-tagline { display: block; } }

.menu-links { display: flex; gap: 12px; }
.menu-bar-link {
  color: var(--menu-bar-link-color); font-size: 14px;
  text-decoration: none; transition: color 0.2s;
}
.menu-bar-link:hover { color: var(--menu-bar-link-color-hover); text-decoration: none; }

.menu-bar-pill {
  border: 1px solid color-mix(in srgb, var(--pill-border) 55%, transparent);
  border-radius: 999px; padding: 5px 11px; font-weight: 700; font-size: 13px;
  color: var(--menu-bar-link-color-hover); text-decoration: none;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--links) 18%, transparent),
    color-mix(in srgb, var(--red) 10%, transparent));
  transition: all 0.2s;
}
.menu-bar-pill:hover {
  border-color: var(--red);
  box-shadow: 0 0 12px var(--particle-glow-soft);
  text-decoration: none; color: var(--menu-bar-link-color-hover);
}

.menu-right { margin-left: auto; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

/* theme controls */
.theme-controls {
  display: flex; align-items: center; gap: 4px;
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  border: 1px solid var(--table-border-color);
  border-radius: 8px; padding: 3px;
}
.theme-controls .lbl {
  font-family: var(--mono-font); font-size: 9px;
  color: color-mix(in srgb, var(--fg) 40%, transparent);
  padding: 0 4px; letter-spacing: 0.05em;
}
.theme-btn {
  border: none; background: transparent;
  color: color-mix(in srgb, var(--fg) 50%, transparent);
  font-family: var(--mono-font); font-size: 10px;
  padding: 5px 8px; border-radius: 5px; cursor: pointer;
  transition: all 0.15s; white-space: nowrap;
}
.theme-btn:hover { color: var(--fg); background: color-mix(in srgb, var(--fg) 8%, transparent); }
.theme-btn.active { background: var(--links); color: var(--bg); font-weight: 700; }
[data-visual="classic"] .theme-btn.active { background: var(--heading-color); color: #000; }
.theme-btn-mode {
  width: 32px; height: 28px; font-size: 14px; padding: 0;
  display: flex; align-items: center; justify-content: center;
}
.theme-btn-mode.active { background: color-mix(in srgb, var(--red) 25%, transparent); color: var(--fg); }

.search-box {
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  border: 1px solid var(--table-border-color);
  border-radius: 6px; padding: 6px 10px;
  color: var(--fg); font-size: 13px; width: 140px;
  transition: border-color 0.2s;
}
.search-box:focus {
  outline: none;
  border-color: var(--hover-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--red) 18%, transparent);
}

.red-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--red); box-shadow: 0 0 6px var(--particle-glow);
  animation: pulse-red 2s infinite; flex-shrink: 0;
}
@keyframes pulse-red { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }

.page-inner {
  display: flex; flex: 1;
  max-width: 1600px; margin: 0 auto; width: 100%;
}

.sidebar {
  width: var(--sidebar-width); flex-shrink: 0;
  background: var(--red-ui);
  border-right: 1px solid color-mix(in srgb, var(--table-border-color) 80%, var(--red-border));
  padding: 14px 0 40px;
  position: sticky; top: var(--menu-bar-height);
  height: calc(100vh - var(--menu-bar-height));
  overflow-y: auto;
}
.sidebar::-webkit-scrollbar { width: 5px; }
.sidebar::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--fg) 25%, transparent); border-radius: 3px; }

.part-title {
  font-weight: 700; font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 0.9rem 1.25rem 0.3rem;
  color: color-mix(in srgb, var(--fg) 50%, transparent);
}
.chapter { list-style: none; padding: 0; margin: 0; line-height: 2.1em; }
.chapter li a {
  display: block; padding: 2px 12px 2px 20px; border-radius: 10px;
  color: color-mix(in srgb, var(--fg) 65%, var(--links));
  font-size: 13.5px; text-decoration: none;
  transition: color 0.2s, background 0.2s;
}
.chapter li a.sub { padding-left: 36px; font-size: 13px; }
.chapter li a:hover {
  color: color-mix(in srgb, var(--hover-accent) 80%, var(--fg));
  background: linear-gradient(90deg, color-mix(in srgb, var(--red) 12%, transparent), transparent);
  text-decoration: none;
}
.chapter li a.active {
  color: var(--sidebar-active); font-weight: 600;
  background: linear-gradient(90deg, color-mix(in srgb, var(--sidebar-active) 22%, transparent), transparent);
}

.nav-group { list-style: none; margin: 0; padding: 0; }
.nav-group-trigger {
  display: block; padding: 2px 12px 2px 20px; border-radius: 10px;
  color: color-mix(in srgb, var(--fg) 65%, var(--links));
  font-size: 13.5px; text-decoration: none;
  transition: color 0.2s, background 0.2s;
}
.nav-group-trigger:hover {
  color: color-mix(in srgb, var(--hover-accent) 80%, var(--fg));
  background: linear-gradient(90deg, color-mix(in srgb, var(--red) 12%, transparent), transparent);
  text-decoration: none;
}
.nav-group-trigger.active {
  color: var(--sidebar-active); font-weight: 600;
  background: linear-gradient(90deg, color-mix(in srgb, var(--sidebar-active) 22%, transparent), transparent);
}
.nav-folder-trigger {
  padding-left: 36px; font-family: var(--mono-font); font-size: 12.5px;
  color: var(--terminal-color);
}
.nav-children {
  list-style: none; margin: 0; padding: 0;
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.3s ease, opacity 0.22s ease;
}
.nav-group.open > .nav-children {
  max-height: 2400px; opacity: 1;
}
.nav-children .sub { padding-left: 36px !important; font-size: 12.5px; }
.nav-group-nested .nav-folder-trigger { padding-left: 36px; }
.nav-group-nested .nav-children .sub { padding-left: 52px !important; }
.nav-group-nested .nav-group-nested .nav-folder-trigger { padding-left: 52px; }
.nav-group-nested .nav-group-nested .nav-children .sub { padding-left: 68px !important; }
.nav-ext::after { content: ' ↗'; font-size: 10px; opacity: 0.45; }
.nav-notes-tree { padding-left: 0; }
.nav-empty {
  padding: 2px 12px 2px 36px; font-size: 12px;
  color: color-mix(in srgb, var(--fg) 38%, transparent);
  font-style: italic; list-style: none;
}

.content {
  flex: 1; min-width: 0;
  padding: 30px 38px 70px;
  max-width: 860px;
}
.content h1 {
  font-size: 2rem; font-weight: 700; margin: 0 0 14px;
  color: var(--heading-color, var(--fg));
  border-bottom: 1px solid var(--table-border-color);
  padding-bottom: 12px;
}
.content h2 { font-size: 1.28rem; margin: 26px 0 10px; color: var(--heading-color, var(--fg)); }
.content p, .content li { color: color-mix(in srgb, var(--fg) 72%, transparent); line-height: 1.75; font-size: 14.5px; }
.breadcrumb { font-size: 13px; color: color-mix(in srgb, var(--fg) 42%, transparent); margin-bottom: 18px; }

.hero-sub {
  font-family: var(--mono-font); font-size: 12px;
  color: var(--terminal-color); letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 8px;
}
.hero-title { border: none !important; padding: 0 !important; font-size: clamp(1.55rem, 3vw, 2.05rem); margin-bottom: 0 !important; white-space: nowrap; }
.hero-brand {
  display: inline-block; max-width: 100%;
  margin-bottom: 14px;
}
.hero-brand-anchor { display: block; width: fit-content; max-width: 100%; }
.hero-handle {
  display: block; width: 100%; box-sizing: border-box;
  font-family: var(--mono-font);
  font-size: clamp(1.55rem, 3vw, 2.05rem);
  font-weight: 600; line-height: 1.15;
  color: var(--brand-handle-color, var(--links));
  letter-spacing: 0; margin: 0.15em 0 0;
  white-space: nowrap;
  text-shadow: 0 0 18px color-mix(in srgb, var(--brand-handle-color, var(--links)) 30%, transparent);
}
.hero-desc { font-size: 15px; max-width: 540px; margin-bottom: 22px; }

.glitch-bar {
  text-align: center; padding: 15px 0; margin: 22px 0;
  border-top: 1px var(--glitch-border-style, solid) var(--red-border, var(--table-border-color));
  border-bottom: 1px var(--glitch-border-style, solid) var(--red-border, var(--table-border-color));
}
.glitch-text {
  font-family: var(--mono-font); font-size: clamp(12px, 2.5vw, 16px);
  letter-spacing: 0.3em; text-transform: uppercase;
  color: color-mix(in srgb, var(--fg) 35%, transparent);
}
.glitch-text em { color: var(--accent-glitch); font-style: normal; text-shadow: 0 0 14px var(--particle-glow-soft); }

.term-strip {
  border-radius: 8px; padding: 14px 18px; margin-bottom: 20px;
  background: var(--card-bg); border: 1px solid var(--table-border-color);
  border-left: 3px solid var(--red);
  font-family: var(--mono-font); font-size: 12.5px;
  color: var(--terminal-color); backdrop-filter: blur(8px);
}

.alert-tip {
  border-radius: 8px; padding: 14px 18px; margin: 16px 0;
  background: var(--alert-tip-bg);
  border: 1px solid color-mix(in srgb, var(--alert-tip-border) 28%, transparent);
  border-left: 4px solid var(--alert-tip-border);
  font-size: 14px; line-height: 1.65;
}
.alert-tip .t { color: var(--alert-tip-title); font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.alert-tip p { margin: 4px 0; color: color-mix(in srgb, var(--fg) 75%, transparent); }

.post-card {
  background: var(--card-bg);
  border: 1px solid var(--table-border-color);
  border-radius: 8px; padding: 17px 19px; margin: 11px 0;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.post-card:hover {
  border-color: color-mix(in srgb, var(--card-hover-border) 50%, transparent);
  background: color-mix(in srgb, var(--red) 5%, var(--card-bg));
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2), 0 0 20px var(--particle-glow-soft);
  transform: translateY(-1px);
}
.post-card h3 { margin: 0 0 6px; font-size: 15px; }
.post-card h3 a { color: var(--links); font-weight: 600; text-decoration: none; }
.post-card h3 a:hover { color: var(--accent-secondary); text-decoration: underline; }
.post-card .post-meta { margin-bottom: 10px; }
.post-card .desc { font-size: 13.5px; margin: 10px 0 0; color: color-mix(in srgb, var(--fg) 60%, transparent); }
.post-card-thumb {
  margin: 4px 0 0;
  line-height: 0;
}
.post-card-thumb a {
  display: inline-block;
  max-width: 100%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--table-border-color);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.post-card-thumb a:hover {
  border-color: color-mix(in srgb, var(--links) 45%, transparent);
  box-shadow: 0 4px 20px var(--particle-glow-soft);
}
.post-card-thumb img {
  display: block;
  width: auto;
  max-width: min(450px, 100%);
  height: auto;
  max-height: 220px;
  object-fit: cover;
}
.tag {
  display: inline-block; font-size: 11px; padding: 2px 8px;
  border-radius: 20px; margin-right: 4px;
  background: color-mix(in srgb, var(--links) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--links) 20%, transparent);
  color: color-mix(in srgb, var(--links) 80%, var(--fg));
}
.tag.red {
  background: rgba(246, 25, 0, 0.1);
  border-color: rgba(246, 25, 0, 0.25);
  color: #ff6b4a;
}
[data-mode="light"] .tag.red { color: #a81200; }

.terminal {
  border-radius: 10px; overflow: hidden; margin: 20px 0;
  border: 1px solid var(--table-border-color);
  border-top: 2px solid var(--red);
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25), 0 0 20px var(--particle-glow-soft);
}
.term-bar {
  padding: 10px 16px; display: flex; gap: 8px; align-items: center;
  border-bottom: 1px solid var(--table-border-color);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.r { background: #ff5f57; } .dot.y { background: #febc2e; } .dot.g { background: #28c840; }
.term-title { margin-left: 8px; font-family: var(--mono-font); font-size: 12px; color: color-mix(in srgb, var(--fg) 40%, transparent); }
.term-body {
  padding: 20px 24px; font-family: var(--mono-font); font-size: 13.5px;
  line-height: 1.85; color: var(--terminal-color);
  text-shadow: 0 0 8px color-mix(in srgb, var(--terminal-color) 25%, transparent);
}
.term-body .u { color: var(--links); }
.term-body .red { color: var(--red); }
.cursor { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.section-h {
  font-family: var(--mono-font); font-size: 12px;
  letter-spacing: 0.13em; text-transform: uppercase;
  margin: 26px 0 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--table-border-color);
}
.skill { margin: 11px 0; }
.skill-head { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 5px; }
.skill-pct { font-family: var(--mono-font); font-size: 12px; color: var(--terminal-color); }
.skill-track {
  height: 7px; background: color-mix(in srgb, var(--fg) 6%, transparent);
  border-radius: 4px; border: 1px solid var(--table-border-color); overflow: hidden;
}
.skill-fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--red), var(--skill-gradient-end, var(--terminal-color)));
  box-shadow: 0 0 8px var(--particle-glow-soft);
  transition: width 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

code.inline {
  background: color-mix(in srgb, var(--fg) 7%, transparent);
  border: 1px solid var(--table-border-color);
  border-radius: 4px; padding: 2px 6px;
  font-family: var(--mono-font); font-size: 0.875em;
  color: var(--inline-code-color);
}
pre {
  background: var(--card-bg); border: 1px solid var(--table-border-color);
  border-radius: 8px; padding: 16px; overflow-x: auto;
  font-family: var(--mono-font); font-size: 13px;
}

.footer {
  border-top: 1px solid var(--table-border-color);
  padding: 14px; text-align: center;
  font-size: 12px; color: color-mix(in srgb, var(--fg) 38%, transparent);
  font-family: var(--mono-font);
  background: var(--menu-bg);
}

@media (max-width: 900px) {
  .sidebar { display: none; }
  .content { padding: 22px 16px 60px; }
  .menu-links, .menu-tagline { display: none !important; }
  .theme-controls .lbl { display: none; }
  .search-box { width: 100px; }
}