/* motion/downloadfx.css — 下载页发布门禁 checklist 与平台状态卡。 */

/* -------------------------------------------------------------------------- */
/* A. 门禁网格 / 卡片                                                         */
/* -------------------------------------------------------------------------- */

.gate-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0 8px;
}

.gate-card {
  position: relative;
  padding: 26px 30px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--surface);
}

.gate-card[data-gate-platform="macos"]::before,
.gate-card[data-gate-platform="windows"]::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 16px;
  width: 6px;
  height: 6px;
  border-radius: 99px;
  pointer-events: none;
}

.gate-card[data-gate-platform="macos"]::before {
  background: var(--mint-strong);
}

.gate-card[data-gate-platform="windows"]::before {
  background: var(--amber);
}

.gate-card h3 {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 16px;
}

.gate-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.gate-card li[data-gate-item] {
  position: relative;
  list-style: none;
  padding: 9px 0 9px 30px;
  border-bottom: 1px solid var(--line);
  color: #a9b8b1;
  font-size: 13px;
  transition: color 0.35s cubic-bezier(0.2, 0.8, 0.3, 1.1);
  transition-delay: calc(var(--si, 0) * 160ms);
}

.gate-card li[data-gate-item]:last-child {
  border-bottom: none;
}

/* 勾选框 */
.gate-card li[data-gate-item]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.02);
  pointer-events: none;
  transform: translateY(-50%);
  transition: border-color 0.35s cubic-bezier(0.2, 0.8, 0.3, 1.1);
  transition-delay: calc(var(--si, 0) * 160ms);
}

/* 对勾：底+左边框旋转成 L */
.gate-card li[data-gate-item]::after {
  content: "";
  position: absolute;
  left: 5px;
  top: calc(50% - 6px);
  width: 8px;
  height: 5px;
  border-color: var(--mint-strong);
  border-style: solid;
  border-width: 0 0 2px 2px;
  pointer-events: none;
  opacity: 0;
  transform: rotate(-45deg) scale(0.4);
  transform-origin: center;
  transition:
    opacity 0.35s cubic-bezier(0.2, 0.8, 0.3, 1.1),
    transform 0.35s cubic-bezier(0.2, 0.8, 0.3, 1.1);
  transition-delay: calc(var(--si, 0) * 160ms);
}

.gate-card[data-gate-platform="windows"] li[data-gate-item],
.gate-card[data-gate-platform="windows"] li[data-gate-item]::before,
.gate-card[data-gate-platform="windows"] li[data-gate-item]::after {
  transition-delay: calc(var(--si, 0) * 160ms + 500ms);
}

.gates-live .gate-card li[data-gate-item] {
  color: #d9e5df;
}

.gates-live .gate-card li[data-gate-item]::before {
  border-color: rgba(185, 248, 211, 0.5);
}

.gates-live .gate-card li[data-gate-item]::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

@media (hover: hover) and (pointer: fine) {
  .gate-card {
    transition: border-color 0.25s ease, transform 0.25s ease;
  }

  .gate-card:hover {
    border-color: rgba(185, 248, 211, 0.35);
    transform: translateY(-2px);
  }
}

@media (max-width: 760px) {
  .gate-grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------------------- */
/* C. 平台状态卡入场：无 JS 时没有 html.has-motion，卡片保持完整可见。         */
/* -------------------------------------------------------------------------- */

html.has-motion .download-platforms:not(.platforms-in) article {
  opacity: 0;
  transform: translateY(10px);
}

html.has-motion .download-platforms article {
  transition:
    opacity 0.45s cubic-bezier(0.2, 0.8, 0.3, 1.1),
    transform 0.45s cubic-bezier(0.2, 0.8, 0.3, 1.1);
}

html.has-motion .download-platforms article:nth-child(2) {
  transition-delay: 120ms;
}

html.has-motion .download-platforms.platforms-in article {
  opacity: 1;
  transform: none;
}

@keyframes download-ready-glow {
  0%,
  100% {
    text-shadow: 0 0 0 transparent;
  }
  42% {
    text-shadow: 0 0 12px rgba(112, 233, 164, 0.35);
  }
}

html.has-motion .download-platforms.platforms-in article.is-ready strong {
  animation: download-ready-glow 1.2s ease 0.45s 1;
}

/* reduced：去掉错峰 delay，避免 duration 被压到 0.01ms 后仍按 160ms/500ms 依次弹出。 */
html.motion-reduced .gate-card li[data-gate-item],
html.motion-reduced .gate-card li[data-gate-item]::before,
html.motion-reduced .gate-card li[data-gate-item]::after,
html.motion-reduced .download-platforms article:nth-child(2) {
  transition-delay: 0s;
}

html.motion-reduced .download-platforms article,
html.motion-reduced .download-platforms.platforms-in article.is-ready strong {
  animation: none;
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html.has-motion .download-platforms article {
    animation: none;
    opacity: 1;
    transform: none;
  }

  html.has-motion .download-platforms.platforms-in article.is-ready strong {
    animation: none;
  }
}