/* ================================================================
   loader.css — 可爱加载动画
   设计理念：柔光唱片 · 丝滑旋转 · 品牌融入
   ================================================================ */

.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9990;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity var(--duration-slow) var(--ease-out), visibility var(--duration-slow) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* 唱片旋转 */
.loader-spinner {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid rgba(var(--brand-rgb), 0.1);
  box-shadow: 0 8px 24px rgba(var(--brand-rgb), 0.2), inset 0 0 0 6px rgba(var(--brand-rgb), 0.05);
  background:
    repeating-radial-gradient(circle at 50% 50%, rgba(var(--brand-rgb), 0.06) 0 1.5px, transparent 1.5px 4px),
    radial-gradient(circle at 50% 50%, var(--brand) 0 14%, #1e293b 14.5% 100%);
  position: relative;
  animation: loader-spin 1.25s linear infinite;
}

.loader-spinner::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--brand-soft);
  box-shadow: 0 0 0 2px rgba(var(--brand-rgb), 0.3);
}

.loader-tip {
  margin-top: var(--space-6);
  color: var(--text-soft);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
}

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

@media (prefers-reduced-motion: reduce) {
  .loader-spinner {
    animation: none;
  }
}