/* === CSS Variables: Light & Dark Themes === */
:root {
  --bg-image: url('images/bg.png');
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-sheen: rgba(255, 255, 255, 0.32);
  --card-border: rgba(255, 255, 255, 0.8);
  --card-border-hover: rgba(255, 255, 255, 0.98);
  --text-primary: #1a1a2e;
  --text-secondary: rgba(0, 0, 0, 0.5);
  --tab-active-bg: rgba(255, 255, 255, 0.7);
  --tab-inactive: rgba(0, 0, 0, 0.35);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --hover-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --divider: rgba(0, 0, 0, 0.08);
  --tag-bg: rgba(0, 0, 0, 0.05);
  --accent: #8a665e;
  --accent-soft: rgba(138, 102, 94, 0.11);
  --glass-blur: blur(20px) saturate(180%);
  --nav-bg: rgba(250, 250, 252, 0.52);
  --nav-pill-bg: rgba(255, 255, 255, 0.22);
  --focus-ring: rgba(138, 102, 94, 0.58);
}

[data-theme="dark"] {
  --card-bg: rgba(21, 25, 42, 0.7);
  --card-sheen: rgba(255, 255, 255, 0.055);
  --card-border: rgba(255, 255, 255, 0.18);
  --card-border-hover: rgba(255, 255, 255, 0.32);
  --text-primary: #f6f4fb;
  --text-secondary: rgba(246, 244, 251, 0.68);
  --tab-active-bg: rgba(255, 255, 255, 0.14);
  --tab-inactive: rgba(255, 255, 255, 0.55);
  --shadow: 0 12px 36px rgba(3, 5, 15, 0.28);
  --hover-shadow: 0 16px 42px rgba(3, 5, 15, 0.42);
  --divider: rgba(255, 255, 255, 0.16);
  --tag-bg: rgba(255, 255, 255, 0.1);
  --nav-bg: rgba(12, 16, 31, 0.6);
  --nav-pill-bg: rgba(255, 255, 255, 0.055);
  --accent: #d1a29a;
  --accent-soft: rgba(209, 162, 154, 0.14);
  --focus-ring: rgba(209, 162, 154, 0.58);
}

/* === Reset & Base === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: #3a2f2c;
  overscroll-behavior: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-primary);
  background: none;
  min-height: 100vh;
  overscroll-behavior: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 9px 13px;
  border-radius: 9px;
  color: #fff;
  background: #201d2c;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.reading-progress {
  position: absolute;
  inset: auto 0 -1px;
  z-index: 1;
  height: 2px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #b37d79, #8a665e 55%, #574b9c);
  transform: scaleX(0);
  transform-origin: left;
}

/* Layer 1: image A (always visible, bottom layer) */
#bg-layer-a {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: url('images/bgA.png') center top / cover fixed;
  box-shadow:
    inset 0 0 180px rgba(6, 8, 24, .18),
    inset 0 -160px 180px rgba(6, 8, 24, .18);
  pointer-events: none;
}

/* Layer 2: image B (top layer, opacity controlled by JS scroll) */
#bg-layer-b {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-image) center / cover fixed;
  box-shadow:
    inset 0 0 180px rgba(6, 8, 24, .18),
    inset 0 -160px 180px rgba(6, 8, 24, .2);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

/* === Top Bar === */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 24px;
  background: var(--nav-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--divider);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
  transition: padding .25s ease, background .25s ease, box-shadow .25s ease;
}

/* === Tab Navigation === */
.tab-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  background: var(--nav-pill-bg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}

.top-bar.is-scrolled {
  padding-top: 6px;
  padding-bottom: 6px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .08),
    0 8px 30px rgba(9, 10, 24, .16);
}

.site-name {
  padding: 0;
  border: 0;
  background: none;
  flex-shrink: 0;
  white-space: nowrap;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* === Theme Toggle === */
.theme-toggle {
  background: none;
  border: 1px solid var(--card-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s, transform 0.2s, border-color .2s, box-shadow .2s;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  background: var(--card-bg);
  color: var(--accent);
}

.theme-icon {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .3s ease, opacity .2s ease;
}

.theme-icon-spark {
  stroke-width: 1.45;
}

.theme-icon-sun {
  display: none;
}

[data-theme="dark"] .theme-icon-moon {
  display: none;
}

[data-theme="dark"] .theme-icon-sun {
  display: block;
}

.theme-toggle:hover {
  transform: scale(1.1);
  border-color: var(--card-border-hover);
  box-shadow: 0 6px 18px rgba(7, 8, 20, .14);
}

.theme-toggle:hover .theme-icon {
  transform: rotate(10deg);
}

/* === Main Container === */
.main-container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}


.tab-btn {
  padding: 6px 12px;
  border: none;
  border-radius: 999px;
  background: transparent;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary);
  font-family: inherit;
  transition: color 0.2s, background .2s, box-shadow .2s, transform .2s;
}

.tab-btn + .tab-btn::before {
  content: none;
}

.tab-btn.active {
  color: var(--text-primary);
  font-weight: 700;
  background: var(--tab-active-bg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .16),
    0 3px 10px rgba(6, 8, 22, .08);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: var(--nav-pill-bg);
}

.tab-btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--focus-ring);
}

.tab-btn.active:focus-visible {
  box-shadow:
    inset 0 0 0 2px var(--focus-ring),
    0 3px 10px rgba(6, 8, 22, .08);
}

/* === Tab Content === */
.tab-content {
  display: none;
  animation: fadeSlideIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

#tab-blog.active,
#tab-messages.active,
#tab-links.active {
  padding-top: 120px;
}

/* === Glass Card === */
.card {
  background:
    linear-gradient(145deg, var(--card-sheen), transparent 42%),
    var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 20px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .1),
    var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color .3s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--hover-shadow);
  border-color: var(--card-border-hover);
}

.card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  margin-bottom: 18px;
  padding-bottom: 9px;
  background: linear-gradient(90deg, var(--accent), var(--accent)) left bottom / 22px 2px no-repeat;
}

.project-more-btn {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: none;
  border: 1px solid var(--divider);
  border-radius: 6px;
  padding: 2px 10px;
  cursor: pointer;
  font-family: inherit;
  letter-spacing: 0;
  text-transform: none;
  transition: all 0.2s;
}

.project-more-btn:hover {
  border-color: var(--accent);
  background: var(--tag-bg);
}

/* === Hero Title Overlay === */
.hero-title-wrap {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.5s ease;
}

.hero-intro {
  position: relative;
  isolation: isolate;
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
}

.hero-intro::before {
  content: '';
  position: absolute;
  inset: -42px -72px;
  z-index: -1;
  background: radial-gradient(
    ellipse at center,
    rgba(13, 12, 31, .5) 0%,
    rgba(13, 12, 31, .3) 44%,
    rgba(13, 12, 31, 0) 74%
  );
  filter: blur(4px);
  pointer-events: none;
}

.hero-kicker,
.hero-subtitle {
  color: rgba(255, 255, 255, .9);
  text-shadow: 0 2px 14px rgba(0, 0, 0, .38);
}

.hero-kicker {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .19em;
}

.hero-subtitle {
  max-width: 32rem;
  font-size: .92rem;
  line-height: 1.75;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.9);
  text-shadow:
    0 1px 1px rgba(7, 7, 18, .8),
    0 4px 24px rgba(7, 7, 18, .72);
  text-align: center;
  font-family: "Noto Serif SC", "Georgia", serif;
}

.hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  border: none;
  border-radius: 0;
  color: rgba(255, 255, 255, .85);
  text-shadow: 0 2px 12px rgba(7, 7, 18, .78);
  background: none;
  box-shadow: none;
  font: inherit;
  font-size: 1.1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: none;
  letter-spacing: 0.06em;
  transition: color .2s ease;
}

.hero-scroll:hover {
  color: #fff;
  background: none;
  transform: none;
}

.hero-scroll span {
  font-weight: 900;
  font-size: 1.2em;
  animation: blink-arrow 1.5s ease-in-out infinite;
}

@keyframes blink-arrow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.15; }
}

.hero-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, .48);
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 255, 255, .12);
  box-shadow: 0 5px 22px rgba(0, 0, 0, .12);
  font: inherit;
  font-size: .8rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform .2s ease, background .2s ease;
}

.hero-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .26);
  transform: translateY(-2px);
}

/* === Hero Section === */
.hero {
  text-align: center;
  padding: 32px 28px 28px;
  margin-top: 110vh;
}

.avatar-link {
  display: inline-block;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.25s ease;
}

.avatar-link:hover {
  transform: scale(1.06);
}

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--card-border);
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  display: block;
}

.hero-name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.hero-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.hero-links {
  display: flex;
  justify-content: center;
  gap: 9px;
  margin-top: 20px;
}

.hero .hero-link {
  border-color: var(--divider);
  color: var(--text-primary);
  background: var(--tag-bg);
  box-shadow: none;
}

.hero .hero-link:hover {
  color: var(--text-primary);
  background: var(--card-border);
}

/* === About Section === */
.about-text {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.about-text p + p {
  margin-top: 1em;
}

/* About section labels */
.about-section-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.4em 0 0.5em;
}

.about-section-label:first-child {
  margin-top: 0;
}

/* === Poetic Quote === */
.poetic-quote {
  margin: 1.4em 0 0;
  padding: 28px 32px 32px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--tag-bg) 0%, transparent 60%);
  border-left: 3px solid var(--accent);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "KaiTi", "STKaiti", serif;
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

/* Top-left decorative quote mark */
.poetic-quote::before {
  content: "\201C";
  position: absolute;
  top: -6px;
  left: 10px;
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.12;
  line-height: 1;
  font-family: "Noto Serif SC", serif;
  pointer-events: none;
}

/* Bottom-right decorative closing quote mark */
.poetic-quote::after {
  content: "\201D";
  position: absolute;
  bottom: -24px;
  right: 16px;
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.08;
  line-height: 1;
  font-family: "Noto Serif SC", serif;
  pointer-events: none;
}

/* Subtle decorative line on the right side */
.poetic-quote {
  background-image:
    linear-gradient(135deg, var(--tag-bg) 0%, transparent 60%),
    linear-gradient(to right, transparent calc(100% - 1px), var(--divider) calc(100% - 1px));
  background-size: 100% 100%, 1px 60%;
  background-position: 0 0, 100% 100%;
  background-repeat: no-repeat;
}

.poetic-quote p {
  margin: 0;
  position: relative;
  z-index: 1;
  letter-spacing: 0.04em;
  text-indent: 0;
}


/* Typography utilities */
.text-sm   { font-size: 0.85rem; }
.text-xs   { font-size: 0.78rem; }
.text-muted { color: var(--text-secondary); }

/* Tag row */
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0.8em 0 0.5em;
}

/* Inline tag/chip */
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 2px 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-right: 6px;
  vertical-align: middle;
  letter-spacing: 0.02em;
}

/* Section divider */
.about-divider {
  border: none;
  border-top: 1px solid var(--divider);
  margin: 1.2em 0;
}

/* === Project Grid (in About tab) === */
.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.project-card {
  cursor: pointer;
  background:
    linear-gradient(145deg, var(--card-sheen), transparent 45%),
    var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color .3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--hover-shadow);
  border-color: var(--card-border-hover);
}

.project-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--tag-bg);
}

.project-cover[src=""],
.project-cover:not([src]),
.project-cover[data-hidden] {
  display: none;
}

.project-body {
  padding: 14px 16px;
}

.project-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-inner-link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
}

.project-inner-link:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
}

/* === Project Cards (legacy) === */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-item {
  padding: 20px 24px;
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.project-link {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.project-link:hover {
  opacity: 0.7;
}

/* === Blog Filter Bar === */
.blog-filter-bar {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.blog-categories {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.blog-cat-btn {
  padding: 6px 16px;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary);
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: all 0.2s ease;
  font-family: inherit;
}

.blog-cat-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.blog-cat-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.blog-search {
  order: -1;
  width: 100%;
  min-height: 40px;
  padding: 8px 15px;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  font-size: 0.8rem;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow .2s, background .2s;
  font-family: inherit;
}

.blog-search::placeholder {
  color: var(--text-secondary);
}

.blog-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* === Blog List === */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.blog-item {
  padding: 0;
  overflow: hidden;
  display: block;
  text-decoration: none;
  color: inherit;
}

.blog-item-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--tag-bg);
}

.blog-item-image[src=""],
.blog-item-image:not([src]),
.blog-item-image[data-hidden] {
  display: none;
}

.blog-item-body {
  padding: 20px 24px;
}

.blog-item-date {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.blog-item-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.blog-item-cat {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--tag-bg);
  padding: 1px 8px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
}

.blog-item-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === Contact Links === */
.contact-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--tag-bg);
  transition: background 0.2s, transform 0.2s, border-color .2s;
}

.contact-link:hover {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 34%, transparent);
  transform: translateY(-2px);
}

.contact-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  font-size: 1.1rem;
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 12px 20px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.footer-counter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-variant-numeric: tabular-nums;
}

.footer-counter-value {
  color: var(--text-primary);
  font-weight: 650;
}

.footer-counter-divider {
  color: var(--divider);
}

.footer-cv {
  white-space: nowrap;
}

/* === Blog Detail Page === */
.blog-detail {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.back-link:hover {
  color: var(--text-primary);
}

.blog-detail-cover {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 20px;
}

.course-orbit-cover {
  aspect-ratio: 1;
  max-height: 420px;
  object-fit: contain;
  background: #f6f4ee;
}

.blog-detail-cover[src=""],
.blog-detail-cover:not([src]),
.blog-detail-cover[data-hidden] {
  display: none;
}

.blog-detail-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.blog-detail-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.3;
}

.blog-detail-body {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-primary);
}

.blog-detail-body p + p {
  margin-top: 1em;
}

.blog-detail-body h2 {
  font-size: 1.2rem;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
}

.blog-detail-body ul,
.blog-detail-body ol {
  margin: 0.8em 0;
  padding-left: 1.5em;
}

.blog-detail-body li + li {
  margin-top: 0.3em;
}

.blog-detail-body code {
  background: var(--tag-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.blog-detail-body pre {
  background: var(--tag-bg);
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 1em 0;
}

.blog-detail-body pre code {
  background: none;
  padding: 0;
}

.blog-detail-body hr {
  border: none;
  border-top: 1px solid var(--divider);
  margin: 1.6em 0;
}

.blog-detail-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  color: var(--text-secondary);
  margin: 1em 0;
}

/* === No Posts Placeholder === */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.empty-state-text {
  font-size: 0.9rem;
}

/* === Scroll Animation === */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Animations === */
@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === Responsive === */
@media (max-width: 480px) {
  body {
    padding: 88px 12px calc(88px + env(safe-area-inset-bottom));
  }

  .top-bar {
    gap: 8px;
    padding: 9px 12px;
  }

  .site-name {
    font-size: 0;
  }

  .site-name::after {
    content: 'SunXT';
    font-size: .8rem;
    letter-spacing: .01em;
  }

  .tab-nav {
    gap: 0;
    padding: 2px;
  }

  .tab-btn {
    padding: 5px 8px;
    font-size: .76rem;
  }

  .theme-toggle {
    width: 31px;
    height: 31px;
  }

  .theme-icon {
    width: 17px;
    height: 17px;
  }

  .card {
    padding: 20px;
    border-radius: 17px;
  }

  #tab-blog.active,
  #tab-messages.active,
  #tab-links.active {
    padding-top: 48px;
  }

  .hero {
    padding: 24px 20px;
    margin-top: 75vh;
  }

  .avatar {
    width: 76px;
    height: 76px;
  }

  .hero-name {
    font-size: 1.35rem;
  }

  .hero-title {
    font-size: clamp(2.35rem, 13vw, 3.1rem);
    letter-spacing: .045em;
  }

  .hero-intro {
    gap: 11px;
  }

  .hero-kicker {
    font-size: .6rem;
  }

  .hero-subtitle {
    max-width: 18rem;
    font-size: .82rem;
  }

  .blog-item-image {
    height: 140px;
  }
}

@media (max-width: 340px) {
  .tab-btn {
    padding-inline: 6px;
    font-size: .72rem;
  }
}

/* === Side Panel === */
.side-panel {
  position: absolute;
  top: calc(110vh);
  right: 24px;
  z-index: 80;
  width: 260px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

.side-panel.stuck {
  position: fixed;
  top: 90px;
  bottom: 24px;
}

@media (min-width: 1280px) and (max-width: 1520px) {
  .main-container {
    margin-left: auto;
    margin-right: auto;
  }

  .side-panel {
    right: 20px;
    left: calc(50% + 360px);
    width: auto;
  }
}

@media (min-width: 1521px) {
  .main-container {
    margin-left: auto;
    margin-right: auto;
  }

  .side-panel {
    right: auto;
    left: calc(75% - 20px);
    width: 380px;
  }
}

.side-widget {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  overflow: visible;
}

.widget-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

/* ==============================================
   Custom Music Player UI
   ============================================== */

/* ---- 1. Title bar ---- */
.player-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
}

.player-header-bar {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
  align-self: center;
}

.player-header-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex: 1;
}

.player-header-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
  margin-left: auto;
}

.player-header-btn:hover {
  color: var(--accent);
  background: var(--tag-bg);
}

.player-playlist-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
}

.player-playlist-btn:hover {
  color: var(--accent);
  background: var(--tag-bg);
}

/* ---- 2. Song info row ---- */
.player-song-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.player-cover-wrap {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.player-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.player-cover[src=""],
.player-cover:not([src]) {
  background: var(--tag-bg);
}

.player-song-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.player-song-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.player-song-artist {
  font-size: 0.75rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.player-status-icon {
  font-size: 1rem;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity 0.3s;
}

.player-status-icon.playing {
  opacity: 1;
  animation: pulse-icon 1.5s ease-in-out infinite;
}

@keyframes pulse-icon {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ---- 3. Time & Volume row ---- */
.player-time-vol-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.player-time {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 78px;
}

.player-volume-icon {
  font-size: 0.85rem;
  cursor: pointer;
  flex-shrink: 0;
  user-select: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.player-volume-icon:hover {
  opacity: 1;
}

.player-volume-bar-wrap {
  flex: 1;
  min-width: 60px;
  height: 18px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.player-volume-bar {
  position: relative;
  width: 100%;
  height: 4px;
  background: var(--divider);
  border-radius: 2px;
  transition: height 0.15s;
}

.player-volume-bar-wrap:hover .player-volume-bar {
  height: 6px;
}

.player-volume-bar::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--accent);
  border-radius: 2px;
  width: var(--vol-pct, 70%);
}

.player-volume-thumb {
  display: none;
}

.player-volume-bar-wrap:hover .player-volume-thumb {
  display: block;
  position: absolute;
  left: var(--vol-pct, 70%);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(74,108,247,0.4);
}

/* ---- 4. Main progress bar ---- */
.player-progress-wrap {
  width: 100%;
  height: 22px;
  display: flex;
  align-items: center;
  cursor: pointer;
  margin-bottom: 14px;
}

.player-progress-bar {
  position: relative;
  width: 100%;
  height: 4px;
  background: var(--divider);
  border-radius: 2px;
  transition: height 0.15s;
}

.player-progress-wrap:hover .player-progress-bar {
  height: 6px;
}

.player-progress-bar::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--accent);
  border-radius: 2px;
  width: var(--prog-pct, 0%);
}

.player-progress-thumb {
  display: none;
}

.player-progress-wrap:hover .player-progress-thumb {
  display: block;
  position: absolute;
  left: var(--prog-pct, 0%);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 1px 6px rgba(74,108,247,0.5);
}

/* ---- 5. Control buttons ---- */
.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.player-ctrl-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
  padding: 0;
  line-height: 1;
}

.player-ctrl-btn:hover {
  color: var(--accent);
  background: var(--tag-bg);
}

.player-ctrl-btn:active {
  transform: scale(0.93);
}

/* Main play/pause button — larger, accent colored */
.player-ctrl-main {
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
}

.player-ctrl-main:hover {
  background: var(--accent);
  color: #fff;
  opacity: 0.85;
}

/* Mode indicator active */
.player-ctrl-btn.mode-active {
  color: var(--accent);
}

/* ---- Playlist panel ---- */
.player-list-panel {
  margin-top: 12px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  max-height: 240px;
  overflow-y: auto;
}

.player-list-ol {
  list-style: none;
  padding: 4px 0;
  margin: 0;
}

.player-list-ol li {
  padding: 7px 14px;
  font-size: 0.76rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--divider);
  transition: background 0.15s;
}

.player-list-ol li:last-child {
  border-bottom: none;
}

.player-list-ol li:hover {
  background: var(--tag-bg);
}

.player-list-ol li.cur {
  color: var(--accent);
  font-weight: 600;
  background: var(--tag-bg);
}

.player-list-index {
  color: var(--text-secondary);
  min-width: 22px;
  font-variant-numeric: tabular-nums;
}

.player-list-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.player-list-author {
  color: var(--text-secondary);
  font-size: 0.7rem;
  flex-shrink: 0;
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Title bar: in-place playlist switcher ---- */
.player-pl-switch {
  position: relative;
  flex-shrink: 0;
}

.pl-inline-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
  z-index: 10;
  box-shadow: var(--hover-shadow);
}

.pl-option {
  display: block;
  width: 100%;
  padding: 8px 14px;
  border: none;
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: transparent;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.pl-option:hover {
  background: var(--tag-bg);
  color: var(--text-primary);
}

.pl-option.active {
  color: var(--accent);
  font-weight: 600;
}

/* ---- Player status indicator ---- */
.player-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

.player-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.7s linear infinite;
}

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

.player-status-error {
  color: #e05555;
}

.player-retry-btn {
  margin-left: 4px;
  padding: 2px 10px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: var(--card-bg);
  color: var(--text-primary);
  font-size: 0.75rem;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
}

.player-retry-btn:hover {
  background: var(--tag-bg);
}

/* On narrow screens, move side panel below top bar as a thin strip */
@media (max-width: 1279px) {
  .side-panel {
    position: fixed;
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    width: auto;
    flex-direction: row;
    gap: 10px;
    padding: 8px 12px;
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--card-border);
    border-radius: 0;
    z-index: 90;
  }

  .side-panel.stuck {
    top: auto;
    bottom: 0;
  }

  .side-widget {
    flex: 1;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .widget-title,
  .player-header-bar,
  .player-header-text {
    display: none;
  }

  .player-custom-ui {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .player-header {
    margin-bottom: 0;
    gap: 4px;
  }

  .player-header-bar,
  .player-header-text {
    display: none;
  }

  .player-song-row {
    margin-bottom: 0;
    gap: 8px;
    flex-shrink: 0;
  }

  .player-cover-wrap {
    width: 36px;
    height: 36px;
  }

  .player-song-info {
    max-width: 120px;
  }

  .player-song-name {
    font-size: 0.75rem;
  }

  .player-song-artist {
    font-size: 0.65rem;
  }

  .player-status-icon {
    display: none;
  }

  .player-time-vol-row,
  .player-progress-wrap {
    display: none;
  }

  .player-controls {
    gap: 6px;
    flex-shrink: 0;
    margin-left: auto;
  }

  .player-ctrl-btn {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }

  .player-ctrl-main {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }

  .player-list-panel {
    display: none !important;
  }

  .player-pl-switch {
    flex-shrink: 0;
  }

  .pl-inline-dropdown {
    font-size: 0.68rem;
    min-width: 140px;
  }

  .player-status {
    margin-top: 0;
    font-size: 0.65rem;
    flex-shrink: 0;
  }
}

/* === Messages / Guestbook === */
.msg-login {
  text-align: center;
  padding: 24px 0 8px;
}

.msg-login-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.msg-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  font-size: 0.9rem;
  color: #fff;
  background: #24292e;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.msg-login-btn:hover {
  background: #1b1f23;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.msg-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--divider);
}

.msg-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.msg-user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.msg-logout-btn {
  padding: 4px 12px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: transparent;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.msg-logout-btn:hover {
  color: #e05555;
  border-color: #e05555;
}

/* Input area */
.msg-input-area {
  margin-bottom: 16px;
}

.msg-input-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.msg-tab-btn {
  padding: 4px 14px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: transparent;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.msg-tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.msg-textarea {
  width: 100%;
  min-height: 120px;
  padding: 12px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  font-size: 0.85rem;
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  color: var(--text-primary);
  background: var(--tag-bg);
  resize: vertical;
  line-height: 1.6;
  outline: none;
  transition: border-color 0.2s;
}

.msg-textarea:focus {
  border-color: var(--accent);
}

.msg-preview {
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: var(--tag-bg);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.msg-submit-btn {
  margin-top: 8px;
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.msg-submit-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.msg-submit-btn:not(:disabled):hover {
  opacity: 0.85;
}

.msg-submit-hint {
  margin-left: 10px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Message list */
.msg-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.msg-loading,
.msg-empty {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 20px 0;
}

.msg-item {
  display: flex;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  transition: border-color 0.2s;
}

.msg-item:hover {
  border-color: var(--card-border);
}

.msg-item-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msg-item-body {
  flex: 1;
  min-width: 0;
}

.msg-item-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.msg-item-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.msg-item-time {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.msg-reply-btn {
  margin-left: auto;
  padding: 2px 10px;
  border: 1px solid var(--divider);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.msg-reply-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--tag-bg);
}

.msg-item-content {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-primary);
  word-break: break-word;
}

/* Markdown content styling (matches GitHub) */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin-top: 1em;
  margin-bottom: 0.5em;
  font-weight: 600;
}
.markdown-body h1 { font-size: 1.2rem; }
.markdown-body h2 { font-size: 1.05rem; }
.markdown-body h3 { font-size: 0.92rem; }

.markdown-body p + p { margin-top: 0.6em; }

.markdown-body code {
  background: var(--tag-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: "SF Mono", "Fira Code", monospace;
  white-space: pre-wrap;
  word-break: break-all;
}

.markdown-body pre {
  background: var(--tag-bg);
  padding: 12px 14px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0.6em 0;
  white-space: pre;
  word-wrap: normal;
}

.markdown-body pre code {
  background: none;
  padding: 0;
  white-space: inherit;
}

.markdown-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--text-secondary);
  margin: 0.6em 0;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5em;
  margin: 0.5em 0;
}

.markdown-body li + li { margin-top: 0.2em; }

.markdown-body a {
  color: var(--accent);
}

.markdown-body img {
  max-width: 100%;
  border-radius: 6px;
}

/* === Friend Links === */
.links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border-radius: 14px;
  background:
    linear-gradient(145deg, var(--card-sheen), transparent 45%),
    var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color .3s ease;
}

.link-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--hover-shadow);
  border-color: var(--card-border-hover);
}

.link-avatar-wrap {
  position: relative;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}

.link-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--card-border);
  background: var(--tag-bg);
  position: relative;
  z-index: 1;
}

.link-avatar-fallback {
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
}

.link-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.link-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-code {
  background: var(--tag-bg);
  border: 1px solid var(--divider);
  border-radius: 10px;
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-primary);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.link-code code {
  background: none;
  padding: 0;
  font-size: inherit;
}

@media (max-width: 480px) {
  .links-grid {
    grid-template-columns: 1fr;
  }
}

/* === Lightbox === */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 85vw;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.5);
  cursor: default;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}