/* source/css/ppt-viewer.css
 * 页面内嵌 PPT 观看器样式 —— 视觉语言与 run_html 运行框保持一致：
 * 同一套主题变量（--card / --theme / --block / --block-border / --text-p2 / --block-radius），
 * 不写死颜色，深浅色切换与主题配色变更自动生效。
 */

.ppt-view {
  margin: 1.25rem 0;
  border: 1px solid var(--block-border, rgba(127, 127, 127, 0.2));
  border-radius: var(--block-radius, 12px);
  background: var(--card);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* ---------- 标题栏（与 html-demo 完全一致） ---------- */
.ppt-view__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-p2, #888);
  background: var(--block, rgba(127, 127, 127, 0.06));
  border-bottom: 1px solid var(--block-border, rgba(127, 127, 127, 0.2));
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.ppt-view__header:hover {
  background: var(--block-hover, rgba(127, 127, 127, 0.12));
}
.ppt-view[data-collapsed="true"] .ppt-view__header {
  border-bottom: 0;
}
.ppt-view__body[hidden] {
  display: none;
}

.ppt-view__dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--theme, #1BCDFC);
  flex: 0 0 auto;
}
.ppt-view__title {
  font-weight: 600;
  color: var(--text, #333);
}
/* 页数 / 状态提示（加载前显示 PPT，加载后显示 “5 页”） */
.ppt-view__meta {
  font-size: 0.72rem;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  background: var(--block, rgba(127, 127, 127, 0.1));
  color: var(--text-p2, #888);
}

.ppt-view__collapse,
.ppt-view__dl {
  border: 1px solid var(--block-border, rgba(127, 127, 127, 0.3));
  background: transparent;
  color: var(--text-p1, #555);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
  font-size: 0.75rem;
  line-height: 1.4;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s;
}
.ppt-view__collapse {
  margin-left: auto;
}
.ppt-view__collapse::before {
  content: "▸ ";
  color: var(--theme, #1BCDFC);
}
.ppt-view[data-collapsed="false"] .ppt-view__collapse::before {
  content: "▾ ";
}
.ppt-view__collapse:hover,
.ppt-view__dl:hover {
  color: var(--theme, #1BCDFC);
  border-color: var(--theme, #1BCDFC);
}

/* ---------- 播放区 ---------- */
.ppt-view__player {
  display: flex;
  flex-direction: column;
}

.ppt-view__stage {
  position: relative;
  width: 100%;
  aspect-ratio: var(--ppt-ratio, 16 / 9);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ppt-view__stage[data-ratio="auto"] {
  aspect-ratio: auto;
  min-height: 240px;
}

/* 渲染引擎是按 canvas 的 CSS 布局尺寸来决定像素尺寸的，
   所以这里必须给明确的 100%（若写 auto，会拿到 canvas 默认的 300×150，画面被拉伸模糊）。 */
.ppt-view__canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* 加载 / 错误提示浮层 */
.ppt-view__state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #666;
  background: #f6f7f8;
}
.ppt-view__state[hidden] {
  display: none;
}
.ppt-view__state.is-error {
  color: #c0392b;
  background: #fdf3f2;
}
:root[data-theme="dark"] .ppt-view__state {
  background: #2a2a2a;
  color: #bbb;
}
:root[data-theme="dark"] .ppt-view__state.is-error {
  background: #3a2626;
  color: #ff8f85;
}

/* ---------- 控制条 ---------- */
.ppt-view__bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.6rem;
  background: var(--block, rgba(127, 127, 127, 0.06));
  border-top: 1px solid var(--block-border, rgba(127, 127, 127, 0.2));
}
.ppt-view__bar button {
  border: 1px solid var(--block-border, rgba(127, 127, 127, 0.3));
  background: transparent;
  color: var(--text-p1, #555);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  font-size: 0.78rem;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.ppt-view__bar button:hover:not(:disabled) {
  color: var(--theme, #1BCDFC);
  border-color: var(--theme, #1BCDFC);
}
.ppt-view__bar button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.ppt-view__nav {
  min-width: 2rem;
  font-size: 1rem;
  line-height: 1;
  padding: 0.2rem 0.5rem;
}
.ppt-view__num {
  font-size: 0.78rem;
  color: var(--text-p2, #888);
  font-variant-numeric: tabular-nums;
  min-width: 4.2rem;
  text-align: center;
}
.ppt-view__fs {
  margin-left: auto;
}

/* ---------- 缩略图网格 ---------- */
.ppt-view__thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: 0.5rem;
  padding: 0.6rem;
  max-height: 320px;
  overflow: auto;
  background: var(--block, rgba(127, 127, 127, 0.04));
  border-top: 1px solid var(--block-border, rgba(127, 127, 127, 0.2));
}
.ppt-view__thumbs[hidden] {
  display: none;
}
.ppt-view__thumb {
  position: relative;
  padding: 0;
  border: 1px solid var(--block-border, rgba(127, 127, 127, 0.25));
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  overflow: hidden;
  line-height: 0;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.ppt-view__thumb:hover {
  border-color: var(--theme, #1BCDFC);
}
.ppt-view__thumb.is-active {
  border-color: var(--theme, #1BCDFC);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--theme, #1BCDFC) 35%, transparent);
}
.ppt-view__thumb canvas {
  width: 100%;
  height: auto;
  /* canvas 的固有默认比例是 2:1，不显式指定会量成错误高度导致缩略图被压扁 */
  aspect-ratio: var(--ppt-ratio, 16 / 9);
  display: block;
}
.ppt-view__thumb span {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.05rem 0.35rem;
  font-size: 0.68rem;
  line-height: 1.5;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-top-right-radius: 6px;
}

/* ---------- 全屏 ---------- */
.ppt-view__player:fullscreen {
  width: 100vw;
  height: 100vh;
  background: #000;
  justify-content: center;
}
.ppt-view__player:fullscreen .ppt-view__stage {
  flex: 1;
  aspect-ratio: auto;
  height: 100%;
  background: #000;
}
.ppt-view__player:fullscreen .ppt-view__canvas {
  max-width: 100vw;
  max-height: calc(100vh - 3rem);
}
.ppt-view__player:fullscreen .ppt-view__bar {
  background: #111;
  border-top: 1px solid #333;
}
.ppt-view__player:fullscreen .ppt-view__bar button {
  color: #ddd;
  border-color: #555;
}
.ppt-view__player:fullscreen .ppt-view__num {
  color: #ddd;
}
/* WebKit 旧语法兜底 */
.ppt-view__player:-webkit-full-screen {
  background: #000;
}

/* ---------- 移动端 ---------- */
@media (max-width: 600px) {
  .ppt-view__thumbs {
    grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  }
  .ppt-view__meta {
    display: none;
  }
}