/* =============================================
   Alabaster · 汉白玉 — Personal Site Styles
   ============================================= */

:root {
  --c-bg: #060d1a;
  --c-text: #eaf3ff;
  --c-dim: rgba(210, 230, 255, 0.55);
  --c-accent: #7eb8ff;
  --c-pink: #ffa8cc;
  --glass: rgba(180, 215, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.15);
  --radius: 20px;
  --font-en: "Cinzel", serif;
  --font-zh: "Ma Shan Zheng", "Noto Serif SC", "PingFang SC", "Microsoft YaHei", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: rgba(126, 184, 255, 0.2) transparent; }
body {
  font-family: var(--font-zh);
  color: var(--c-text);
  background: var(--c-bg);
  cursor: url('./assets/frieren-cursor-32.png') 4 4, auto;
  overflow-x: hidden;
}

body.has-intro {
  overflow: hidden;
}

a, button, .link-card, .gallery-item {
  cursor: url('./assets/frieren-pointer-32.png') 4 4, pointer;
}

/* ---- Custom Cursor Ghost Trail ---- */
.custom-cursor {
  position: fixed;
  width: 24px;
  height: 24px;
  pointer-events: none;
  z-index: 9999;
  background: url('./assets/frieren-cursor-32.png') center/contain no-repeat;
  opacity: 0.3;
  filter: drop-shadow(0 0 4px rgba(126, 184, 255, 0.3));
  transition: transform 0.3s ease, opacity 0.25s ease, filter 0.3s ease;
}

.custom-cursor.hover {
  background-image: url('./assets/frieren-pointer-32.png');
  transform: scale(1.3);
  opacity: 0.55;
  filter: drop-shadow(0 0 8px rgba(255, 168, 204, 0.5));
}

/* ---- Intro Cinematic ---- */
.intro {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: #020810;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 1.2s ease, visibility 1.2s;
}

.intro.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.intro-text {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.intro-en {
  font-family: "Ma Shan Zheng", var(--font-zh);
  font-size: clamp(1rem, 1.8vw, 1.4rem);
  letter-spacing: 0.2em;
  opacity: 0;
  animation: intro-word 1.8s ease 0.3s forwards;
}

.intro-name {
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  opacity: 0;
  animation: intro-word 2s ease 1.4s forwards;
}

.intro-zh {
  font-family: "Ma Shan Zheng", var(--font-zh);
  font-size: clamp(1rem, 2vw, 1.6rem);
  color: var(--c-dim);
  opacity: 0;
  animation: intro-word 1.8s ease 2.6s forwards;
}

@keyframes intro-word {
  0%   { opacity: 0; transform: translateY(18px); filter: blur(8px); }
  20%  { opacity: 1; transform: translateY(0); filter: blur(0); }
  75%  { opacity: 1; }
  100% { opacity: 0; filter: blur(6px); }
}

/* ---- Intro Skip Button ---- */
.intro-skip {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 3;
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.5);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 8px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s ease;
  opacity: 0;
  animation: skip-fade-in 1s ease 3s forwards;
}

.intro-skip:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.08);
}

@keyframes skip-fade-in {
  to { opacity: 1; }
}

/* ---- Background Stack ---- */
.bg-stack {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.bg-img {
  position: absolute;
  inset: -30px;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.8s ease;
  will-change: opacity, transform;
}

.bg-img--active { opacity: 1; }

.bg-tint {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(90, 170, 255, 0.12), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 140, 200, 0.1), transparent 50%),
    linear-gradient(180deg, rgba(6, 13, 26, 0.35), rgba(6, 13, 26, 0.65));
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 94vw);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 22px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(160%);
  border-radius: 999px;
  z-index: 50;
  opacity: 0;
  transition: opacity 0.8s ease, background 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.visible { opacity: 1; }

.nav-brand {
  font-family: var(--font-en);
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--c-text);
  letter-spacing: 0.1em;
}

.nav-links {
  display: flex;
  gap: 18px;
}

.nav-links a {
  text-decoration: none;
  color: var(--c-dim);
  font-size: 0.88rem;
  transition: color 0.25s;
  position: relative;
}

.nav-links a:hover { color: #fff; }

.nav-links a.active {
  color: #fff;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
  border-radius: 1px;
  box-shadow: 0 0 8px rgba(126, 184, 255, 0.4);
}

.nav.scrolled {
  background: rgba(10, 20, 40, 0.45);
  backdrop-filter: blur(24px) saturate(180%);
}

/* ---- Stage (scrollable area) ---- */
.stage {
  position: relative;
  z-index: 1;
  opacity: 0;
  transition: opacity 1.5s ease;
}

.stage.visible { opacity: 1; }

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 60px 16px;
  text-align: center;
}

.hero-avatar {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.6);
  box-shadow: 0 0 40px rgba(100, 180, 255, 0.25);
  animation: avatar-glow 4s ease-in-out infinite;
  will-change: box-shadow;
  transition: transform 0.5s ease;
}

.hero-avatar:hover {
  transform: scale(1.08);
  box-shadow: 0 0 50px rgba(100, 180, 255, 0.4), 0 0 100px rgba(160, 140, 255, 0.15);
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-title-en {
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: 0.12em;
  font-weight: 700;
}

.hero-title-zh {
  font-family: "Ma Shan Zheng", var(--font-zh);
  font-size: 1.2rem;
  color: var(--c-dim);
}

.hero-typewriter {
  font-size: 1rem;
  color: var(--c-dim);
  min-height: 1.6em;
  border-right: 2px solid var(--c-accent);
  padding-right: 4px;
  white-space: nowrap;
  overflow: hidden;
  animation: blink-caret 1.4s step-end infinite;
}

@keyframes blink-caret {
  50% { border-color: transparent; }
}

.hero-social {
  display: flex;
  gap: 16px;
  margin-top: 10px;
}

.hero-social a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.1rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.3s ease;
}

.hero-social a.social-pending {
  opacity: 0.45;
}

.hero-social a:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(100,180,255,0.2);
}

/* ---- Glass Panel ---- */
.glass-panel {
  position: relative;
  max-width: 680px;
  margin: 60px auto;
  padding: 40px 36px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(150%);
  border-radius: var(--radius);
  text-align: center;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.glass-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(126, 184, 255, 0.3), rgba(255, 168, 204, 0.2), transparent);
  border-radius: 1px;
}

.glass-panel h2 {
  font-family: var(--font-en);
  margin-bottom: 16px;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
}

.glass-panel p {
  color: var(--c-dim);
  line-height: 2;
  font-size: 0.95rem;
}

/* ---- About Tags ---- */
.about-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.tag {
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  background: rgba(126, 184, 255, 0.1);
  border: 1px solid rgba(126, 184, 255, 0.25);
  color: var(--c-accent);
  transition: all 0.3s ease;
}

.tag:hover {
  background: rgba(126, 184, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(126, 184, 255, 0.15);
}

.tag:nth-child(3n+2) {
  background: rgba(255, 168, 204, 0.1);
  border-color: rgba(255, 168, 204, 0.25);
  color: var(--c-pink);
}

.tag:nth-child(3n+2):hover {
  background: rgba(255, 168, 204, 0.2);
  box-shadow: 0 4px 12px rgba(255, 168, 204, 0.15);
}

.tag:nth-child(3n) {
  background: rgba(180, 160, 255, 0.1);
  border-color: rgba(180, 160, 255, 0.25);
  color: #b4a0ff;
}

.tag:nth-child(3n):hover {
  background: rgba(180, 160, 255, 0.2);
  box-shadow: 0 4px 12px rgba(180, 160, 255, 0.15);
}

/* ---- Gallery ---- */
.gallery {
  max-width: 900px;
  margin: 60px auto;
  padding: 0 16px;
  text-align: center;
}

.gallery h2 {
  font-family: var(--font-en);
  margin-bottom: 24px;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
}

.gallery-grid {
  columns: 3 260px;
  column-gap: 14px;
}

.gallery-item {
  break-inside: avoid;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 14px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.gallery-item:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

/* ---- Link Cards ---- */
.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  text-decoration: none;
  color: var(--c-text);
  transition: all 0.3s ease;
}

.link-card i {
  font-size: 1.4rem;
  color: var(--c-accent);
}

.link-card span {
  font-size: 0.85rem;
  color: var(--c-dim);
}

.link-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.2);
}

.link-soon {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-pink);
  opacity: 0.7;
}

/* ---- Footer ---- */
.footer {
  text-align: center;
  padding: 40px 16px;
  color: var(--c-dim);
  font-size: 0.8rem;
}

/* ---- Footer Wave Canvas ---- */
.footer-wave-canvas {
  display: block;
  width: 100%;
  height: 80px;
  margin-bottom: -10px;
  pointer-events: none;
}

/* ---- Floating Buttons ---- */
.bg-toggle,
.to-top {
  position: fixed;
  z-index: 55;
  width: 44px;
  height: 44px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--glass);
  backdrop-filter: blur(12px);
  color: #fff;
  cursor: url('./assets/frieren-pointer-32.png') 4 4, pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease, opacity 0.5s ease;
}

.bg-toggle { right: 18px; bottom: 76px; }
.to-top    { right: 18px; bottom: 22px; }

.bg-toggle.show,
.to-top.show {
  opacity: 1;
  pointer-events: auto;
}

.bg-toggle:hover,
.to-top:hover {
  background: rgba(255,255,255,0.15);
  transform: scale(1.1);
}

/* ---- Scroll Reveal (blur + slide) ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  filter: blur(6px);
  transition: opacity 0.9s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), filter 0.8s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* ---- Hero Title Glow ---- */
.hero-title-en {
  text-shadow: 0 0 40px rgba(126, 184, 255, 0.3), 0 0 80px rgba(126, 184, 255, 0.1);
}

/* ---- Gallery Hover Overlay ---- */
.gallery-item::after {
  content: "\f065";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.35s ease;
  z-index: 2;
}

.gallery-item:hover::after {
  opacity: 1;
}

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s;
  backdrop-filter: blur(8px);
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 88vh;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  transform: scale(0.92);
  transition: transform 0.4s ease, opacity 0.2s ease;
}

.lightbox.open .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 1.3rem;
  display: grid;
  place-items: center;
  transition: all 0.25s ease;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: rotate(90deg);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-50%) scale(1.1);
}

/* ---- Scroll Progress ---- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--c-accent), var(--c-pink));
  z-index: 100;
  transition: width 0.05s linear;
  pointer-events: none;
}


/* ---- Animations ---- */
@keyframes avatar-glow {
  0%, 100% { box-shadow: 0 0 30px rgba(100, 180, 255, 0.2), 0 0 60px rgba(100, 180, 255, 0.05); }
  50% { box-shadow: 0 0 45px rgba(100, 180, 255, 0.35), 0 0 80px rgba(160, 140, 255, 0.1); }
}

/* ---- Page Header (sub-pages) ---- */
.page-header {
  min-height: 45vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 80px 16px 20px;
}

.page-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.page-title-en {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.12em;
  font-weight: 700;
  text-shadow: 0 0 40px rgba(126, 184, 255, 0.3), 0 0 80px rgba(126, 184, 255, 0.1);
}

.page-title-zh {
  font-family: "Ma Shan Zheng", var(--font-zh);
  font-size: 1.1rem;
  color: var(--c-dim);
}

.page-subtitle {
  color: var(--c-dim);
  font-size: 0.9rem;
}

.page-section {
  opacity: 0;
  transform: translateY(28px);
  filter: blur(6px);
  transition: opacity 0.9s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), filter 0.8s ease;
}

/* ---- Section More Link ---- */
.section-more {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.85rem;
  color: var(--c-accent);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: all 0.3s ease;
}

.section-more:hover {
  color: #fff;
  transform: translateX(4px);
}

/* ---- Section Headings ---- */
.section-heading {
  font-family: var(--font-en);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  text-align: center;
}

/* ---- About Full Page ---- */
.about-full {
  max-width: 720px;
}

.about-profile {
  display: flex;
  align-items: center;
  gap: 28px;
  text-align: left;
}

.about-profile .hero-avatar {
  flex-shrink: 0;
}

.about-intro h2 {
  font-family: var(--font-en);
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.about-name-zh {
  font-family: "Ma Shan Zheng", var(--font-zh);
  font-size: 0.95rem;
  color: var(--c-dim);
  margin-left: 6px;
}

.about-identity {
  color: var(--c-accent);
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
  opacity: 0.85;
}

.about-intro p {
  color: var(--c-dim);
  line-height: 2;
  font-size: 0.9rem;
}

/* ---- Skill Grid ---- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.skill-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 10px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
}

.skill-card i {
  font-size: 1.5rem;
  color: var(--c-accent);
}

.skill-card span {
  font-size: 0.78rem;
  color: var(--c-dim);
}

.skill-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* ---- Timeline ---- */
.timeline {
  position: relative;
  padding-left: 28px;
  text-align: left;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-pink), transparent);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-dot {
  position: absolute;
  left: -24px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 12px rgba(126, 184, 255, 0.4);
}

.timeline-content h3 {
  font-family: var(--font-en);
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--c-text);
}

.timeline-content p {
  color: var(--c-dim);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* ---- Friend Cards ---- */
.friend-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.friend-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
}

.friend-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.friend-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(126, 184, 255, 0.12);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.friend-avatar i {
  font-size: 1.2rem;
  color: var(--c-accent);
}

.friend-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.friend-info h3 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.friend-info p {
  font-size: 0.78rem;
  color: var(--c-dim);
}

/* ---- Friend Apply ---- */
.friend-apply p {
  color: var(--c-dim);
  font-size: 0.9rem;
  margin-bottom: 18px;
  line-height: 1.8;
  text-align: center;
}

.apply-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.apply-item {
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.apply-item strong {
  display: block;
  font-size: 0.72rem;
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.apply-item span {
  font-size: 0.85rem;
  color: var(--c-dim);
}

/* ---- Page Transition Overlay ---- */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--c-bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.page-transition-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(126, 184, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(126, 184, 255, 0.4);
}

/* (Firefox scrollbar rules merged into html above) */

/* ---- Scroll Down Hint ---- */
.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.5;
}

.scroll-hint span {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-dim);
}

.scroll-hint i {
  font-size: 0.9rem;
  color: var(--c-accent);
  animation: chevron-bob 2.5s ease-in-out infinite;
}

@keyframes chevron-bob {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ---- Easter Egg Toast ---- */
.easter-egg-toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 14px 28px;
  background: rgba(20, 20, 40, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid var(--c-accent);
  border-radius: 16px;
  color: var(--c-text);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 10000;
  box-shadow: 0 0 20px rgba(126, 184, 255, 0.15);
  pointer-events: none;
}

.easter-egg-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- Time Greeting ---- */
.time-greeting {
  font-size: 0.8rem;
  color: var(--c-dim);
  letter-spacing: 0.06em;
  opacity: 0.7;
  margin-top: 4px;
}

/* ---- Footer Stats ---- */
.footer-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.72rem;
  color: var(--c-dim);
  opacity: 0.6;
  flex-wrap: wrap;
  letter-spacing: 0.03em;
}

.footer-stat i {
  margin-right: 4px;
  color: var(--c-accent);
  opacity: 0.7;
}

.footer-stat-sep {
  opacity: 0.3;
}

.footer-stats:hover {
  opacity: 0.85;
}

@media (max-width: 680px) {
  .footer-stats {
    flex-direction: column;
    gap: 4px;
  }
  .footer-stat-sep {
    display: none;
  }
}

/* ---- Stay Timer (in footer-stats) ---- */
.stay-time {
  color: var(--c-accent);
  opacity: 0.8;
}

/* ---- Mini Music Player ---- */
.music-btn {
  position: fixed;
  left: 18px;
  bottom: 22px;
  z-index: 56;
  width: 44px;
  height: 44px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--glass);
  backdrop-filter: blur(12px);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: url('./assets/frieren-pointer-32.png') 4 4, pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.music-btn:hover {
  background: rgba(255,255,255,0.15);
  transform: scale(1.1);
}

.music-btn.playing i {
  animation: spin-disc 8s linear infinite;
}

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

.music-btn.playing {
  box-shadow: 0 0 16px rgba(126, 184, 255, 0.25);
  border-color: rgba(126, 184, 255, 0.35);
}

.music-panel {
  position: fixed;
  left: 18px;
  bottom: 76px;
  z-index: 56;
  width: 260px;
  padding: 18px 16px 14px;
  background: rgba(10, 18, 35, 0.88);
  backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.95);
  transition: opacity 0.35s ease, visibility 0.35s, transform 0.35s ease;
  pointer-events: none;
}

.music-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.music-track-name {
  font-size: 0.78rem;
  color: var(--c-text);
  text-align: center;
  margin-bottom: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.03em;
}

.music-time-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.music-time-cur,
.music-time-dur {
  font-size: 0.62rem;
  color: var(--c-dim);
  opacity: 0.7;
  min-width: 28px;
  font-variant-numeric: tabular-nums;
}

.music-time-dur { text-align: right; }

.music-track-idx {
  text-align: center;
  font-size: 0.6rem;
  color: var(--c-dim);
  opacity: 0.45;
  margin-top: 8px;
  letter-spacing: 0.08em;
}

.music-progress-wrap {
  flex: 1;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}

.music-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-pink));
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
}

.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.music-controls button {
  background: none;
  border: none;
  color: var(--c-dim);
  font-size: 0.85rem;
  cursor: url('./assets/frieren-pointer-32.png') 4 4, pointer;
  transition: color 0.2s ease, transform 0.2s ease;
  padding: 4px;
}

.music-controls button:hover {
  color: #fff;
  transform: scale(1.15);
}

.music-controls .music-play-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(126, 184, 255, 0.15);
  border: 1px solid rgba(126, 184, 255, 0.3);
  color: var(--c-accent);
  font-size: 0.9rem;
  display: grid;
  place-items: center;
}

.music-controls .music-play-btn:hover {
  background: rgba(126, 184, 255, 0.25);
}

.music-volume-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.music-volume-wrap i {
  font-size: 0.7rem;
  color: var(--c-dim);
}

.music-volume {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 3px;
  background: rgba(255,255,255,0.12);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.music-volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
}

.music-volume::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  border: none;
  cursor: pointer;
}

/* ---- Likes Grid (About page) ---- */
.likes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.like-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 10px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
}

.like-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.like-card .like-emoji {
  font-size: 1.6rem;
}

.like-card span {
  font-size: 0.78rem;
  color: var(--c-dim);
  text-align: center;
}

@media (max-width: 680px) {
  .music-panel { width: 220px; left: 12px; }
  .likes-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Time-aware body tints ---- */
body[data-time="dawn"] { background: linear-gradient(180deg, #0f0e1a 0%, #1a120e 100%); }
body[data-time="dusk"] { background: linear-gradient(180deg, #110a18 0%, #0d0515 100%); }
body[data-time="afternoon"] { background: linear-gradient(180deg, #12100e 0%, #0f0d0a 100%); }

/* ---- Hamburger Button ---- */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 2;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-text);
  border-radius: 1px;
  transition: all 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Mobile ---- */
@media (max-width: 680px) {
  .nav-hamburger { display: flex; }

  .nav { padding: 10px 16px; flex-wrap: wrap; border-radius: 20px; }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 4px;
    padding-top: 10px;
    order: 3;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    font-size: 0.85rem;
    padding: 10px 12px;
    border-radius: 12px;
    transition: background 0.2s ease;
    white-space: nowrap;
  }

  .nav-links a:hover,
  .nav-links a.active {
    background: rgba(255,255,255,0.06);
  }
  .hero-avatar { width: 100px; height: 100px; }
  .glass-panel { margin: 40px 16px; padding: 28px 20px; }
  .gallery { padding: 0 12px; }
  .gallery-grid { columns: 2 140px; }
  .about-profile { flex-direction: column; text-align: center; }
  .about-intro { text-align: center; }
  .apply-info { grid-template-columns: 1fr; }
  .friend-cards { grid-template-columns: 1fr; }
  .page-header { min-height: 35vh; }
}

/* Touch devices: hide custom cursor trail */
@media (hover: none), (pointer: coarse) {
  .custom-cursor { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  /* 只关掉大规模的背景动画，保留文字等关键过渡 */
  #particleCanvas,
  #starfield,
  .bg-img,
  .page-transition-overlay {
    animation: none !important;
    transition: none !important;
  }
}