:root {
  color-scheme: dark;
  --surface: #0c1324;
  --surface-lowest: #070d1f;
  --surface-low: #151b2d;
  --surface-container: #191f31;
  --surface-high: #23293c;
  --surface-highest: #2e3447;
  --primary: #bec6e0;
  --secondary: #b9c8de;
  --tertiary: #d0bcff;
  --on-surface: #dce1fb;
  --on-surface-variant: #c6c6cd;
  --outline: #909097;
  --outline-variant: #45464d;
  --font-cjk: "三极行楷简体", serif;
}

html[data-lang="zh"] body,
html[data-lang="zh"] .font-body-lg {
  font-family: "汉仪细行楷", "Hanken Grotesk", var(--font-cjk), sans-serif;
}

html {
  background: var(--surface);
  scroll-behavior: smooth;
}

body {
  background: var(--surface);
  color: var(--on-surface);
  overflow-x: hidden;
  font-family: "Hanken Grotesk", var(--font-cjk), sans-serif;
}

.markdown-body {
  font-family: "Hanken Grotesk", var(--font-cjk), sans-serif;
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 1px solid var(--tertiary);
  outline-offset: 3px;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(12, 19, 36, 0.5);
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.22);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.38);
}

.glass-card,
.glass-panel {
  background-color: rgba(21, 27, 45, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.glass-panel {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(148, 163, 184, 0.2);
}

.glass-card {
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(208, 188, 255, 0.3);
  box-shadow: 0 0 20px rgba(208, 188, 255, 0.05);
}

.glass-input {
  background: rgba(12, 19, 36, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.2);
  color: var(--on-surface);
}

.glass-input:focus {
  border-color: var(--tertiary);
  box-shadow: 0 0 0 1px var(--tertiary);
  outline: none;
}

.admin-editor #markdown-editor,
.admin-editor textarea {
  background-color: transparent !important;
  color: var(--on-surface);
  caret-color: var(--tertiary);
}

.admin-editor .glass-input,
.admin-editor input[type="text"],
.admin-editor input[type="number"],
.admin-editor input[type="url"],
.admin-editor select {
  background-color: rgba(12, 19, 36, 0.5) !important;
  color: var(--on-surface);
}

.sky-container {
  background: #0c1324;
  overflow: hidden;
}

.milky-way {
  position: absolute;
  top: -22%;
  left: -20%;
  width: 140%;
  height: 86%;
  background: radial-gradient(ellipse at center, rgba(145, 98, 252, 0.11) 0%, rgba(12, 19, 36, 0) 62%),
    radial-gradient(ellipse at 70% 30%, rgba(190, 198, 224, 0.06) 0%, rgba(12, 19, 36, 0) 54%);
  opacity: 0.72;
  transform: rotate(-15deg);
  animation: milky-way-drift 120s linear infinite alternate;
  pointer-events: none;
}

.aurora-1,
.aurora-2,
.aurora-3 {
  position: absolute;
  top: -12%;
  width: 120%;
  height: 46%;
  opacity: 0.48;
  filter: blur(60px);
  mix-blend-mode: screen;
  pointer-events: none;
}

.aurora-1 {
  left: -10%;
  background: linear-gradient(90deg, rgba(30, 0, 82, 0) 0%, rgba(145, 98, 252, 0.3) 40%, rgba(0, 212, 255, 0.2) 60%, rgba(12, 19, 36, 0) 100%);
  animation: aurora-flow 25s ease-in-out infinite;
}

.aurora-2 {
  left: 0;
  top: 5%;
  background: linear-gradient(90deg, rgba(12, 19, 36, 0) 0%, rgba(0, 212, 255, 0.18) 30%, rgba(208, 188, 255, 0.28) 70%, rgba(12, 19, 36, 0) 100%);
  animation: aurora-flow 35s ease-in-out infinite reverse;
}

.aurora-3 {
  left: 10%;
  top: -7%;
  background: linear-gradient(90deg, rgba(12, 19, 36, 0) 0%, rgba(145, 98, 252, 0.2) 50%, rgba(30, 0, 82, 0.4) 80%, rgba(12, 19, 36, 0) 100%);
  animation: aurora-flow 30s ease-in-out infinite 5s;
}

.star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
}

.sky-fade {
  background: radial-gradient(circle at 50% -20%, rgba(30, 0, 82, 0.34) 0%, rgba(12, 19, 36, 0) 60%),
    radial-gradient(ellipse at 80% 30%, rgba(190, 198, 224, 0.05) 0%, rgba(12, 19, 36, 0) 50%),
    linear-gradient(to bottom, rgba(12, 19, 36, 0) 0%, rgba(12, 19, 36, 0.8) 68%, #0c1324 100%);
  mix-blend-mode: screen;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--tertiary), var(--primary));
  transition: width 0.1s ease;
}

.divider {
  width: 100%;
  height: 0.5px;
  background: rgba(148, 163, 184, 0.2);
}

.annotation-marker {
  color: var(--secondary);
  cursor: pointer;
  position: relative;
  vertical-align: super;
  font-size: 0.75em;
  text-decoration: none;
  transition: color 0.2s ease;
}

.annotation-marker:hover {
  color: var(--tertiary);
}

.annotation-popover {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 150%;
  left: 50%;
  width: max-content;
  max-width: 280px;
  transform: translateX(-50%) translateY(10px);
  color: var(--on-surface);
  padding: 10px 14px;
  border-radius: 0.25rem;
  z-index: 60;
  pointer-events: none;
  transition: all 0.2s ease;
  text-indent: 0;
}

.annotation-marker:hover .annotation-popover,
.annotation-marker:focus .annotation-popover {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  color: var(--primary);
  font-family: "三极行楷简体", var(--font-cjk), serif;
  font-weight: 700;
  line-height: 1.25;
  scroll-margin-top: 96px;
}

.markdown-body h2 {
  font-size: clamp(1.7rem, 2vw, 2.3rem);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.markdown-body h3 {
  font-size: 1.55rem;
  margin-top: 2.4rem;
  margin-bottom: 0.9rem;
}

.markdown-body h4 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol {
  margin-top: 0;
  margin-bottom: 1.75rem;
}

.markdown-body:not(.poetry-body) p.prose-line {
  text-indent: 2em;
  margin-top: 0;
  margin-bottom: 0;
}

.markdown-body:not(.poetry-body) > .prose-para-gap {
  height: 0;
  margin: 0 0 1.75rem;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5rem;
}

.markdown-body li + li {
  margin-top: 0.45rem;
}

.markdown-body a:not(.annotation-marker) {
  color: var(--tertiary);
  text-decoration: underline;
  text-decoration-color: rgba(208, 188, 255, 0.4);
  text-underline-offset: 3px;
}

.markdown-body blockquote {
  position: relative;
  margin-top: 0;
  margin-bottom: 1.75rem;
  padding: 1rem;
  border-left: 3px solid var(--tertiary);
  background: rgba(21, 27, 45, 0.4);
  border-radius: 0.35rem;
  color: var(--primary);
  font-family: "Playfair Display", var(--font-cjk), serif;
  font-size: 1.5rem;
  font-style: italic;
  line-height: 1.35;
}

.markdown-body img {
  max-width: 100%;
  border-radius: 0.5rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.markdown-body.poetry-body {
  --poetry-base-indent: 2.5em;
  text-align: left;
}

.markdown-body.poetry-body .poetry-line {
  --poetry-hang: 2em;
  margin-top: 0;
  margin-bottom: 0.35em;
  text-align: left;
  padding-left: calc(var(--poetry-base-indent) + var(--poetry-hang));
  text-indent: calc(-1 * var(--poetry-hang));
}

.markdown-body.poetry-body .poetry-line.is-latin {
  --poetry-hang: 4ch;
}

.markdown-body.poetry-body .poetry-stanza-gap {
  height: 1.1em;
}

.markdown-body.poetry-body .poetry-heading {
  text-align: left;
  padding-left: var(--poetry-base-indent);
}

.markdown-body.poetry-body blockquote {
  margin-top: 0;
  margin-bottom: 0.35em;
  padding: 1rem;
  font-family: inherit;
  font-size: inherit;
  font-style: italic;
  line-height: inherit;
}

.markdown-body.poetry-body blockquote .poetry-line {
  padding-left: calc(var(--poetry-base-indent) + var(--poetry-hang) - 1rem);
  margin-bottom: 0.35em;
}

.markdown-body.poetry-body blockquote .poetry-line:last-child {
  margin-bottom: 0;
}

.line-clamp-2,
.line-clamp-3,
.line-clamp-4 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 { -webkit-line-clamp: 2; }
.line-clamp-3 { -webkit-line-clamp: 3; }
.line-clamp-4 { -webkit-line-clamp: 4; }

.sort-button.is-active {
  font-family: "三极行楷简体", var(--font-cjk), serif;
  font-weight: 700;
  background: var(--surface-variant);
  color: var(--primary);
}

.sort-underline .sort-button {
  border-bottom: 1px solid transparent;
  border-radius: 0;
}

.sort-underline .sort-button.is-active {
  background: transparent;
  border-bottom-color: var(--tertiary);
  color: var(--tertiary);
}

.nav-link.is-active {
  color: var(--tertiary);
  border-bottom: 2px solid var(--tertiary);
  padding-bottom: 0.25rem;
}

.reader-sidebar-link.is-current {
  color: var(--tertiary);
  border-left-color: var(--tertiary);
  background: rgba(46, 52, 71, 0.2);
}

.font-option {
  color: var(--on-surface-variant);
}

.font-option.is-active {
  color: var(--tertiary);
}

@keyframes twinkle {
  0%, 100% { opacity: 0.12; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.18); }
}

@keyframes aurora-flow {
  0% { transform: translateX(-10%) rotate(-5deg) scale(1); }
  50% { transform: translateX(10%) rotate(5deg) scale(1.08); }
  100% { transform: translateX(-10%) rotate(-5deg) scale(1); }
}

@keyframes milky-way-drift {
  0% { background-position: 0% 0%; }
  100% { background-position: 100% 100%; }
}

@media (max-width: 900px) {
  .desktop-only {
    display: none !important;
  }
}

/* Reader page: hide content until CJK fonts are loaded */
.fonts-loading [data-article-body],
.fonts-loading [data-reader-title],
.fonts-loading [data-reader-toc],
.fonts-loading [data-reader-series],
.fonts-loading [data-annotation-list] {
  visibility: hidden;
}

.fonts-loading .font-loading-indicator {
  display: flex;
}

.font-loading-indicator {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  background: var(--surface);
}

.font-loading-indicator::after {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--outline-variant);
  border-top-color: var(--tertiary);
  border-radius: 50%;
  animation: font-load-spin 0.8s linear infinite;
}

@keyframes font-load-spin {
  to { transform: rotate(360deg); }
}

/* Staged font loading skeletons */
.stellar-card-skeleton {
  position: relative;
  overflow: hidden;
  pointer-events: none;
}

.stellar-card-skeleton::after,
.stellar-line-skeleton,
.stellar-title-skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-container-high) 0%,
    var(--surface-container-highest, var(--surface-container-high)) 50%,
    var(--surface-container-high) 100%
  );
  background-size: 200% 100%;
  animation: stellar-skeleton-pulse 1.4s ease-in-out infinite;
}

.stellar-card-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.55;
}

.stellar-line-skeleton {
  border-radius: 0.375rem;
  height: 1rem;
}

.stellar-title-skeleton {
  display: inline-block;
  min-width: 12rem;
  min-height: 2.5rem;
  border-radius: 0.5rem;
  color: transparent !important;
}

html:not([data-icons-ready="1"]) .material-symbols-outlined {
  visibility: hidden;
}

@keyframes stellar-skeleton-pulse {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* CJK listing pages: chrome / card font gate */
html.cjk-ui-pending [data-cjk-ui] {
  visibility: hidden;
}

html.cjk-cards-pending [data-work-grid] > :not(.stellar-card-skeleton),
html.cjk-cards-pending [data-category-list] > :not(.stellar-card-skeleton) {
  visibility: hidden;
}

.stellar-reveal-fade {
  animation: stellar-reveal-fade 0.45s ease forwards;
}

.stellar-card-enter {
  transition: opacity 0.35s ease;
}

@keyframes stellar-reveal-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Reader: hide main column until content is rendered (avoids empty glass-card flash) */
html.stellar-reader-pending [data-reader-content] {
  visibility: hidden;
}

html.stellar-reader-pending.stellar-reader-staged [data-reader-content] {
  visibility: visible;
}

html.stellar-reader-pending.stellar-reader-staged [data-reader-header],
html.stellar-reader-pending.stellar-reader-staged [data-reader-image],
html.stellar-reader-pending.stellar-reader-staged [data-reader-actions],
html.stellar-reader-pending.stellar-reader-staged [data-reader-dates],
html.stellar-reader-pending.stellar-reader-staged [data-reader-divider],
html.stellar-reader-pending.stellar-reader-staged #annotations {
  visibility: hidden;
  height: 0;
  min-height: 0;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden;
  border-width: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}