/* Glassmorphism — 玻璃拟态 CSS
 * 参考 iOS 18 / visionOS Liquid Glass 设计
 * 纯 CSS，无依赖，直接可用
 */

/* ===== 基础玻璃卡片 ===== */
.glass-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}
.glass-card:hover {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

/* ===== 深色玻璃 ===== */
.glass-dark {
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255,255,255,0.05);
}

/* ===== 玻璃按钮 ===== */
.glass-btn {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  color: inherit;
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.25s ease;
  font-weight: 500;
}
.glass-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.02);
}
.glass-btn:active {
  transform: scale(0.98);
}

/* ===== 玻璃导航栏 ===== */
.glass-nav {
  background: rgba(15, 23, 42, 0.7) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06) !important;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15) !important;
}

/* ===== 玻璃搜索框 ===== */
.glass-input {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  padding: 10px 18px 10px 42px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: all 0.3s ease;
  width: 220px;
}
.glass-input::placeholder { color: rgba(255,255,255,0.45); }
.glass-input:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  width: 300px;
  box-shadow: 0 0 20px rgba(197, 48, 48, 0.15);
}

/* ===== 玻璃弹窗/覆盖层 ===== */
.glass-overlay {
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ===== 玻璃列表项 ===== */
.glass-list-item {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 8px;
  transition: all 0.2s ease;
}
.glass-list-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateX(4px);
}

/* ===== 玻璃标签 ===== */
.glass-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  color: rgba(255,255,255,0.8);
}

/* ===== 玻璃分割线 ===== */
.glass-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  margin: 16px 0;
}

/* ===== 玻璃内发光 ===== */
.glass-glow {
  position: relative;
  overflow: hidden;
}
.glass-glow::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .glass-input { width: 160px; padding: 8px 14px 8px 36px; font-size: 13px; }
  .glass-input:focus { width: 200px; }
  .glass-card { border-radius: 12px; }
}

/* ===== 玻璃动画 ===== */
@keyframes glass-fade-in {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.glass-animate-in {
  animation: glass-fade-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ===== 玻璃进度条 ===== */
.glass-progress {
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  overflow: hidden;
}
.glass-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, rgba(197,48,48,0.8), rgba(229,62,62,0.8));
  border-radius: 2px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px rgba(197,48,48,0.4);
}

/* ===== 玻璃表单容器（适配 MUI） ===== */
.glass-form-container {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255,255,255,0.08);
}

@media (max-width: 768px) {
  .glass-form-container { padding: 24px 20px; border-radius: 16px; }
}