/* elysiastyle.css - Core Layout & Visual */
:root {
  --accent-start: #9a6ef0;
  --accent-end: #7b3fe4;
  --link: #8f66f0;
  --bg: #ffffff;
  --maxw: 980px;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft Yahei", Arial, sans-serif;
  color: #333;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft Yahei', sans-serif;
  letter-spacing: 0.3px;
  line-height: 1.85;
}

.container {
  max-width: var(--maxw);
  margin: 28px auto;
  padding: 0 48px;
}

.banner {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 18px;
}

.banner img {
  width: 100%;
  height: auto;
  display: block;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.title h1 {
  margin: 0;
  font-size: 1.5rem;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

.subtitle {
  color: #888;
  margin-top: 6px;
  font-size: 0.92rem;
}

.music {
  margin-left: auto;
}

iframe {
  border-radius: 6px;
  border: 0;
}

/* =========================================
   🌌 Elysia — 液态紫粉玻璃倒计时
   ========================================= */
.countdown {
  position: relative;
  margin: 22px 0;
  padding: 20px 28px;
  border-radius: 18px;
  overflow: hidden;
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 4px 18px rgba(160,120,255,0.3);
  animation: countdownFloat 8s ease-in-out infinite;
  transform: translateZ(0);
  will-change: transform;
  backface-visibility: hidden;
  z-index: 1; 
}

.countdown::before {
  content: "";
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(45% 45% at 15% 25%, rgba(156,107,255,0.38), transparent 30%),
    radial-gradient(40% 40% at 70% 60%, rgba(200,150,255,0.28), transparent 25%),
    radial-gradient(35% 35% at 40% 80%, rgba(130,200,255,0.22), transparent 20%);
  filter: blur(40px);
  animation: blobMove 14s ease-in-out infinite;
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: -1; 
}

.countdown div {
  color: rgba(240,230,255,0.9);
  font-size: 0.96rem;
  margin-bottom: 8px;
  text-shadow: none;
}

.countdown .nums {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 1px;
  color: #7a66c7;
  text-shadow: none;
}

@keyframes countdownFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

@keyframes blobMove {
  0% { transform: translate(0,0) scale(1); }
  25% { transform: translate(6%, -4%) scale(1.05); }
  50% { transform: translate(-5%, 5%) scale(1.02); }
  75% { transform: translate(3%, -3%) scale(1.07); }
  100% { transform: translate(0,0) scale(1); }
}

/* =========================================
   ✨ 核心修改：滚动交互淡入淡出 (Scroll Reveal)
   ========================================= */

/* 1. 设置所有 section 和列表项的【初始状态】：
      透明(opacity: 0) + 稍微下沉(translateY) 
*/
section, 
.container ul li {
  opacity: 0;
  transform: translateY(30px);
  /* 添加丝滑过渡 */
  transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  /* 性能优化：告诉浏览器这些属性会变 */
  will-change: opacity, transform;
}

/* 2. 定义【可见状态】：
      当 JS 给它加上 .visible 类时，恢复不透明和原位
*/
section.visible,
.container ul li.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================= */

h2 {
  font-size: 1.02rem;
  margin: 8px 0 14px 0;
  padding-left: 10px;
  border-left: 4px solid rgba(123,63,228,0.12);
  color: var(--accent-end);
  background: linear-gradient(90deg, rgba(154,110,240,0.03), rgba(123,63,228,0.01));
  padding: 8px;
  border-radius: 6px;
  background: linear-gradient(90deg, #b388ff, #9c6bff, #b388ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  transition: all 0.6s ease;
}

h2:hover {
  animation: gradientFlow 3s linear infinite;
}

p, ul, li {
  color: #7a66c7 !important;
  line-height: 1.8;
  font-size: 0.95rem;
  margin-bottom: 8px; /* 列表间距优化 */
}

a {
  color: var(--link);
  text-decoration: none;
  transition: all 0.4s ease;
}
a:hover { text-decoration: underline; }

main.container p:hover,
main.container li:hover {
  color: #9a6ef0 !important;
  transition: all 0.3s ease;
  /* 只有鼠标放在上面时，才稍微放大一点点，增加互动感 */
  transform: translateX(4px); 
}

/* 修复被之前的代码影响的状态 */
main.container ul li.visible:hover {
  transform: translateX(4px); /* 保持hover时的微动，不与fadeIn冲突 */
}

pre {
  background: #faf6ff;
  border: 1px solid rgba(123,63,228,0.06);
  padding: 10px;
  border-radius: 8px;
  overflow: auto;
  color: #5b4aa1;
}

footer {
  margin: 36px 0 0 0;
  padding-top: 12px;
  color: #999;
  font-size: 0.85rem;
  text-align: center;
  border-top: 1px solid rgba(156,107,255,0.2);
  background: linear-gradient(90deg, rgba(179,136,255,0.05), rgba(156,107,255,0.05));
  box-shadow: 0 -4px 12px rgba(156,107,255,0.05);
  transition: all 0.4s ease;
}

footer:hover {
  text-shadow: 0 0 6px rgba(156,107,255,0.6);
  color: #bca9ff;
}

.leftnav {
  position: fixed;
  left: 12px;
  top: 120px;
  width: 160px;
}
.leftnav ul { list-style: none; padding: 0; margin: 0; }
.leftnav li { margin: 8px 0; color: var(--link); font-size: 0.9rem; }

@media (max-width: 900px) {
  .container { padding: 0 18px; }
  .leftnav { display: none; }
  header { flex-direction: column; align-items: flex-start; }
  .music { margin-left: 0; margin-top: 8px; }
}

@keyframes glowPulse {
  0%, 100% { color: #9a6ef0; text-shadow: 0 0 4px rgba(156,107,255,0.4); }
  50% { color: #ffffff; text-shadow: 0 0 10px rgba(156,107,255,0.9); }
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

/* Banner 3D */
.banner-3d {
  position: relative;
  width: 100%;
  max-width: 980px;
  margin: 0 auto 28px auto;
  perspective: 1000px;
  border-radius: 16px;
  overflow: hidden;
  transform-style: preserve-3d;
  box-shadow: 0 8px 28px rgba(120, 80, 255, 0.25);
  animation: bannerFloaty 8s ease-in-out infinite;
}

.banner-3d .banner-layer {
  transition: transform 0.25s ease-out;
  transform-origin: center;
}

.banner-3d img {
  width: 100%;
  display: block;
  border-radius: 16px;
}

.banner-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 30%, rgba(255,255,255,0.25), transparent 70%);
  mix-blend-mode: overlay;
  pointer-events: none;
  opacity: 0.5;
  transition: background-position 0.2s ease-out;
}

@keyframes bannerFloaty {
  0%, 100% { transform: translateY(0); filter: brightness(1); }
  50% { transform: translateY(-6px); filter: brightness(1.05); }
}

.elysia-video-wrapper {
  position: relative;
  margin: 40px auto;
  width: 100%;
  max-width: 800px;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 0 30px rgba(150,120,255,0.15);
}

.elysia-video-wrapper video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  transition: opacity 0.8s ease-in-out;
  background: #000;
}
#videoA { opacity: 1; z-index: 2; }
#videoB { opacity: 0; z-index: 1; }

#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -2;
  background: transparent;
  pointer-events: none;
}

/* 第一段特定渐变 (保留) */
main.container > section:nth-of-type(1) p {
  background: linear-gradient(90deg, #0E52D4 0%, #A639D7 100%);
  width: fit-content;
  width: -moz-fit-content; 
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
  font-weight: normal;
  text-decoration: none;
  margin-bottom: 12px;
}
main.container > section:nth-of-type(1) p strong {
  background: none; 
  -webkit-text-fill-color: transparent; 
  font-weight: 700;
}
main.container > section:nth-of-type(1) p:hover {
  filter: brightness(1.2);
  cursor: default;
}

/* iOS 适配 */
@media screen and (max-width: 1024px) and (-webkit-min-device-pixel-ratio: 2) {
  .container p, .container h2, .container .subtitle, .container .countdown div {
    word-break: break-word !important;
    overflow-wrap: anywhere !important;
    hyphens: auto !important;
    text-align: justify !important;
    line-height: 1.85 !important;
  }
  .container ul li { padding-left: 0.3em; text-indent: -0.3em; }
  .container ul li::marker { unicode-bidi: isolate; font-variant-numeric: tabular-nums; }
  .container p:not(:empty) { text-indent: 0; }
}