/* css/test.css */

/* --- 基础设定 --- */
:root {
  --grid-cols: 4;
  --border-color: rgba(255, 255, 255, 0.2);
}

body,
html {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  background-color: #000000;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  color: #fff;
  cursor: none;
  overflow-x: hidden;
}

/* Index 页面使用系统默认鼠标 */
body.bg-compact,
body.bg-compact *,
body.bg-full,
body.bg-full * {
  cursor: default !important;
}

/* --- 1. 全局背景层 (SVG 扭曲版) --- */
/* Full background style - 原有的全屏背景 */
body.bg-full .reflection-layer {
  position: fixed;
  top: -10%;
  left: -10%;
  width: 120%;
  height: 120%;
  background-image: url('/uploads/BG2.jpg');
  background-size: cover;
  background-position: center;

  /* 默认状态：模糊+扭曲 */
  filter: grayscale(100%) contrast(120%) brightness(0.6) url(#glass-warp);
  z-index: 0;
  pointer-events: none;
  transition: transform 0.1s ease-out;
  opacity: 1;
}

/* Compact background style - 全屏背景，让粒子效果可见 */
body.bg-compact #bg-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  /* 全屏高度，让粒子效果在滚动时依然可见 */
  background: #000000;
  pointer-events: none;
  /* 保持 none，讓點擊穿透 */
  transition: all 0.3s ease;
  overflow: visible;
  /* 改为 visible 让 canvas 可以超出容器 */
  z-index: 5;
  /* 提高 z-index 讓粒子在 hero 文字之下但在背景之上 */
}

/* 動態背景容器（預留給 JS） */
body.bg-compact .dynamic-bg-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: background 0.5s ease;
  /* 移除 transform，使用相機 setViewOffset 實現偏移 */
  overflow: visible;
}

/* Canvas 元素可以接收點擊 */
body.bg-compact .dynamic-bg-container canvas {
  pointer-events: auto;
  cursor: pointer;
}

/* Compact 模式下調整 hero 高度 */
body.bg-compact .hero-section {
  height: 65vh;
  /* 配合背景高度調整 */
  padding-left: 60px;
}

/* Compact 模式下調整 hero 文字 */
body.bg-compact .hero-text {
  font-size: 4vw;
  color: #ffffff;
  mix-blend-mode: normal;
}

body.bg-compact .hero-sub {
  color: rgba(255, 255, 255, 0.7);
}

/* --- 2. UI Layer --- */
.ui-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  padding: 40px 60px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
}

.ui-layer header,
.ui-layer nav {
  pointer-events: auto;
}

header h1 {
  margin: 0;
  font-family: 'Inter', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: bold;
  color: rgba(255, 255, 255, 0.9);

  /* 新增：让 logo + 文字 横着排在一起 */
  display: flex;
  align-items: center;
  gap: 12px;
  /* logo 和名字中间的间距，可自己调 */
}

/* 让 logo 高度 ≈ 文字高度 */
.header-logo {
  height: 1.2rem;
  /* 和 h1 的 font-size 保持一致 */
  width: auto;
  display: block;
  color: #ffffff;
  mix-blend-mode: difference !important;
}

/* 导航栏移到右边 */
.nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  line-height: 1.4rem;
  letter-spacing: 1px;
  margin-right: 0;
  position: relative;
  cursor: none;
  transition: color 0.3s;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
}

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

.nav a:hover::after {
  width: 100%;
}

.filters {
  display: flex;
  align-items: center;
  gap: 15px;
}

.filters input,
.filters select,
.filters button {
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 5px 0;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: none;
  text-align: right;
}

.filters input:focus,
.filters select:focus {
  outline: none;
  border-bottom-color: #fff;
}

.filters button {
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  padding: 5px 20px;
  margin-left: 10px;
}

.filters button:hover {
  background: #fff;
  color: #000;
}

/* --- 3. Hero Section --- */
.hero-section {
  position: relative;
  height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 60px;
  z-index: 10;
  pointer-events: none;
  /* border: 1px solid #f5f5f5; */
}

.hero-text {
  font-size: 5vw;
  line-height: 1.1;
  font-weight: 300;
  color: #fff;
  mix-blend-mode: difference;
  opacity: 0.9;
}

.hero-text .highlight {
  font-family: 'Times New Roman', serif;
  font-style: italic;
  font-weight: 400;
}

.hero-sub {
  margin-top: 30px;
  font-size: 0.9rem;
  font-family: 'Courier New', monospace;
  opacity: 0.6;
  max-width: 1000px;
}

/* --- 3.5. Particle Project Title (独立层，不受 canvas 影响) --- */
.particle-project-title {
  position: absolute;
  bottom: 160px;
  left: 60px;
  z-index: 60;
  /* 高于 canvas，低于 UI layer */
  pointer-events: auto;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.6s ease;
  /* border: 1px solid #fff; */
}

/* 粒子交互提示的闪烁动画 */
@keyframes clickHint {
  0%, 100% {
    opacity: 0.2;
    transform: translate(-50%, -50%) scale(0.9);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

.particle-project-title h2 {
  font-family: 'Times New Roman', serif;
  font-style: italic;
  font-size: 2vw;
  font-weight: 300;
  color: #fff;
  margin: 0;
  letter-spacing: 1px;
  mix-blend-mode: difference;
}

.particle-project-title p {
  font-family: 'Times New Roman', serif;
  font-size: 1vw;
  font-style: italic;
  color: #fff;
  margin: 8px 0 0 0;
  opacity: 0.8;
  letter-spacing: 0.5px;
  mix-blend-mode: difference;
}

/* --- 4. Cursor --- */
#cursor-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 30px;
  height: 60px;
  pointer-events: none;
  z-index: 100;
  mix-blend-mode: normal;
}

.cursor-main {
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.65376 12.3673H5.46026L5.31717 12.4976L0.500002 16.8829L0.500002 1.19823L11.4818 12.1799L5.65376 12.3673Z' fill='white' stroke='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

.cursor-reflection {
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.65376 12.3673H5.46026L5.31717 12.4976L0.500002 16.8829L0.500002 1.19823L11.4818 12.1799L5.65376 12.3673Z' fill='white' stroke='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  opacity: 0.4;
  transform-origin: 0 0;
  transform: scaleY(-1) skewX(-10deg) translateY(2px);
  filter: blur(1px);
}

/* --- 5. Grid System --- */
.glass-grid {
  position: relative;
  z-index: 10;
  /* 恢复到 hero section 同级，黑色背景遮住粒子效果 */
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100vw;
  box-sizing: border-box;
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
  background-color: #000000;
  pointer-events: none; /* 让点击穿透到下层的 canvas */
}

.grid-item {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  border-right: 4px solid var(--border-color);
  border-bottom: 4px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  /* opacity: 0.3; */
  pointer-events: auto; /* grid-item 本身恢复点击 */
}

/* .grid-item {
  position: relative;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  transition: border-color 0.5s ease;
  /* 只过渡边框，背景图单独过渡 
  overflow: hidden;
}
*/


.grid-item:hover {
  background: rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 0 40px rgba(255, 255, 255, 0.05);
  /* border-color: rgba(143, 143, 143, 0.6); */
  z-index: 2;
  /* opacity: 1; */
}

/* --- 核心修复：特定作品倒影 --- */
/* COMMENTED OUT: Background image on grid items */
/*
.grid-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: var(--project-img);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;

  opacity: 0;
  transform: scale(calc(1.05 * var(--cover-scale, 1)));
  filter: grayscale(100%) contrast(120%) brightness(0.7);

  transition:
    opacity 0.6s ease,
    transform 0.6s cubic-bezier(0.19, 1, 0.22, 1),
    filter 0.8s ease;
}

.grid-item:hover::before {
  opacity: 1;
  transform: scale(var(--cover-scale, 1));
  filter: grayscale(0%) contrast(105%) brightness(1) saturate(1.1);
}
*/

/* Project cover image - grayscale by default */
.project-cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;

  opacity: 0;
  filter: grayscale(100%) contrast(110%) brightness(0.85);
  transform: scale(var(--cover-scale, 1));

  transition:
    opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    filter 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    transform 4s cubic-bezier(0.4, 0, 0.2, 1);

  will-change: opacity, filter, transform;
  background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
}

/* Image loaded state */
.project-cover.loaded {
  opacity: 0.8;
}




.grid-item:hover .project-cover.loaded {
  opacity: 1;
  filter: grayscale(0%) contrast(105%) brightness(1) saturate(1.1);
  transform: scale(calc(var(--cover-scale, 1) * 1.15));

  transition:
    opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    filter 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.grid-item:hover::after {
  background-position: 0 0;
}

.grid-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  cursor: none;
}

/* --- 扫光效果 (更细腻) --- */
.grid-item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0) 30%, rgba(255, 255, 255, 0.08) 50%, rgba(255, 255, 255, 0) 70%);
  background-size: 200% 100%;
  background-position: 100% 0;
  transition: background-position 1s ease-out;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
  /* 叠加模式让光更自然 */
}


.content {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
  mix-blend-mode: difference;
  z-index: 5;
  pointer-events: none;
}

.grid-item:hover .content {
  opacity: 1;
  transform: translateY(0);
}

h2 {
  font-size: 1.8rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin: 0;
  font-weight: 300;
}

p {
  font-size: 0.8rem;
  margin-top: 10px;
  font-family: 'Courier New', monospace;
  opacity: 0.8;
}

footer {
  position: relative;
  z-index: 20;
  text-align: center;
  padding: 40px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}


.footer-logo {
  display: block;
  margin: 0 auto;
  /* 水平居中 */
  height: 3em;
  /* 字体大小的 3 倍 */
  width: auto;
  /* 對於 <img> 標籤的 SVG，用 filter 調整顏色 */
  /* opacity: 1; */
  /* 調整透明度 */
  /* filter: brightness(0.3) contrast(1.2); */
  /* color: rgba(255, 255, 255, 0.4); */
  /* brightness 越小越暗，contrast 調整對比度 */
}

/* WebGL 水面画布：铺满整个背景层 */
#glCanvas {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
  /* 让鼠标事件穿透，但仍然可以检测鼠标位置 */
}


/* ================================
   Mobile Navigation (hidden on desktop)
   ================================ */

.mobile-nav-toggle,
.mobile-nav-menu,
.mobile-nav-overlay {
  display: none;
}

@media (max-width: 1024px) {
  .glass-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-text {
    font-size: 8vw;
  }

  .ui-layer {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  /* Hide desktop navigation */
  .ui-layer .nav {
    display: none;
  }

  /* Mobile hamburger menu button */
  .mobile-nav-toggle {
    display: block;
    position: fixed;
    top: 10px;
    right: 20px;
    z-index: 1000;
    width: 46px;
    height: 46px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    transition: all 0.3s ease;
    outline: none;
  }

  .mobile-nav-toggle:hover {
    transform: scale(1.1);
  }

  .mobile-nav-toggle span {
    width: 20px;
    height: 2.5px;
    background: #fff;
    border-radius: 3px;
    transition: all 0.3s ease;
  }

  .mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Mobile navigation menu */
  .mobile-nav-menu {
    display: block;
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    background: rgba(0, 0, 0, 0.85);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 999;
    padding: 80px 30px 30px;
    transition: right 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    pointer-events: all;
  }

  .mobile-nav-menu.active {
    right: 0;
  }

  .mobile-nav-menu a {
    display: block;
    padding: 18px 20px;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
  }

  .mobile-nav-menu a:hover,
  .mobile-nav-menu a:active {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateX(-5px);
  }

  /* Overlay */
  .mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: all;
  }

  .mobile-nav-overlay.active {
    display: block;
    opacity: 1;
  }


  .glass-grid {
    grid-template-columns: repeat(1, 1fr);
  }

  .filters {
    display: none;
  }

  /* 移动端隐藏自定义鼠标 */
  #cursor-wrapper {
    display: none !important;
  }

  /* 恢复默认鼠标 */
  body,
  html,
  * {
    cursor: auto !important;
  }

  /* 移动端 bg-compact 模式显示静态背景 */
  body.bg-compact #bg-layer {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: calc(70vh + 20%);
    background-image: url('/uploads/BG2.jpg');
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) contrast(120%) brightness(0.6) url(#glass-warp);
    z-index: 5;
    pointer-events: none;
    overflow: hidden;
  }

  /* 移动端隐藏动态背景容器 */
  body.bg-compact .dynamic-bg-container {
    display: none;
  }

  /* 移动端直接显示彩色封面，不需要 hover */
  .grid-item::before {
    opacity: 1 !important;
    transform: scale(var(--cover-scale, 1)) !important;
    filter: grayscale(0%) contrast(105%) brightness(1) saturate(1.1) !important;
  }

  /* 移动端标题和元数据始终可见 */
  .grid-item .content {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }


  .grid-item .content h2,
  .grid-item .content p {
    opacity: 1 !important;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  }
}