/* ============================================================
   清清童创 v3.0 纹理系统
   版本：v3.0 (2026-07-06)
   
   层次说明：
   ─ body::before → 全局噪点纹理（pointer-events:none, fixed）
   ─ .card-gloss  → 卡片光泽高光（::after 伪元素）
   ─ .brand-texture → 品牌微纹理（页面装饰用）
   ============================================================ */

/* ==================== 1. 全局噪点纹理层 ==================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background-image: var(--surface-grain);
  background-repeat: repeat;
  background-size: 200px 200px;
  opacity: 1;
}

/* 在 .page-* 容器上也加一层，确保模态等不受影响 */
#app > #page-container {
  position: relative;
  z-index: 0;
}

/* ==================== 2. 卡片光泽高光 ==================== */

/* 2.1 自动光泽：所有 .card-clay 的 ::after 伪元素 */
.card-clay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: var(--surface-gloss);
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.card-clay:hover::after {
  opacity: 1;
}

/* 2.2 手动光泽类：可在任意元素上加 */
.card-gloss {
  position: relative;
  overflow: hidden;
}

.card-gloss::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 45%;
  background: var(--surface-gloss);
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.card-gloss:hover::after {
  opacity: 1;
}

/* 2.3 始终可见光泽（用于 premium 卡片） */
.card-gloss-always {
  position: relative;
  overflow: hidden;
}

.card-gloss-always::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 45%;
  background: var(--surface-gloss);
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

/* ==================== 3. 品牌微纹理 ==================== */

/* 3.1 点阵纹理背景（hero 区域或页面背景） */
.brand-dots {
  background-image: var(--surface-dots);
  background-size: var(--surface-dots-size);
}

/* 3.2 对角光泽带（CTA 卡片用） */
.brand-sheen {
  position: relative;
}

.brand-sheen::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(180, 167, 246, 0.12) 0%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 0;
}

/* ==================== 4. 辉光动画 ==================== */

/* 4.1 品牌紫辉光呼吸 */
@keyframes glow-breathe-purple {
  0%, 100% { box-shadow: 0 0 20px rgba(180, 167, 246, 0.15); }
  50%      { box-shadow: 0 0 40px rgba(180, 167, 246, 0.3); }
}

@keyframes glow-breathe-orange {
  0%, 100% { box-shadow: 0 0 16px rgba(255, 169, 77, 0.15); }
  50%      { box-shadow: 0 0 36px rgba(255, 169, 77, 0.3); }
}

@keyframes glow-breathe-pink {
  0%, 100% { box-shadow: 0 0 14px rgba(255, 143, 163, 0.12); }
  50%      { box-shadow: 0 0 28px rgba(255, 143, 163, 0.28); }
}

.glow-purple { animation: glow-breathe-purple 3s ease-in-out infinite; }
.glow-orange { animation: glow-breathe-orange 3s ease-in-out infinite 0.5s; }
.glow-pink   { animation: glow-breathe-pink   3s ease-in-out infinite 1s; }

/* 4.2 微量辉光（被动 hover 触发） */
.glow-hover {
  transition: box-shadow var(--duration-normal) var(--ease-smooth);
}

.glow-hover:hover {
  box-shadow: var(--surface-glow-purple);
}

.glow-hover-orange:hover { box-shadow: var(--surface-glow-orange); }
.glow-hover-pink:hover   { box-shadow: var(--surface-glow-pink); }
.glow-hover-blue:hover   { box-shadow: var(--surface-glow-blue); }
.glow-hover-green:hover  { box-shadow: var(--surface-glow-green); }

/* ==================== 5. 暗色模式适配 ==================== */
body.dark-mode .brand-sheen::before {
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(102, 126, 234, 0.08) 0%,
    transparent 60%
  );
}

body.dark-mode .glow-purple {
  animation-name: glow-breathe-purple-dark;
}

body.dark-mode .glow-orange {
  animation-name: glow-breathe-orange-dark;
}

body.dark-mode .glow-pink {
  animation-name: glow-breathe-pink-dark;
}

@keyframes glow-breathe-purple-dark {
  0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.1); }
  50%      { box-shadow: 0 0 40px rgba(102, 126, 234, 0.2); }
}

@keyframes glow-breathe-orange-dark {
  0%, 100% { box-shadow: 0 0 16px rgba(255, 169, 77, 0.1); }
  50%      { box-shadow: 0 0 36px rgba(255, 169, 77, 0.2); }
}

@keyframes glow-breathe-pink-dark {
  0%, 100% { box-shadow: 0 0 14px rgba(255, 143, 163, 0.08); }
  50%      { box-shadow: 0 0 28px rgba(255, 143, 163, 0.18); }
}

/* ==================== 6. 性能保护 ==================== */
@media (prefers-reduced-motion: reduce) {
  .glow-purple,
  .glow-orange,
  .glow-pink {
    animation: none;
  }
  
  .card-gloss::after {
    transition: none;
  }
}

/* 移动端低频设备降级 */
@media (max-width: 480px) {
  body::before {
    background-size: 256px 256px; /* 减少 GPU 负担 */
  }
}