/* =====================================================================
   hero-effects.css — 首页 hero 特效层 + 控制面板
   结构:.hero-fx-layer(叠在背景图之上、文字之下)
        ├ canvas.hero-fx-canvas(流体等特效画布)
        └ .hero-fx-panel(可折叠控制面板,由 hero-panel.js 生成)
   ===================================================================== */

.hero-fx-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0; /* 背景图/遮罩(-2/-1)之上,标题文字(1)之下 */
  overflow: hidden;
  pointer-events: none; /* 画布不拦截点击;交互监听在 .hero-section 上 */
  /* 隔离混合作用域:画布的 screen 叠光只作用于 hero 背景图,不渗到页面其他部分 */
  isolation: isolate;
}

.hero-fx-canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  /* ★ 叠光合成:染料只向背景图"加光"(亮部相加),画布本身完全透明,
     不会形成任何暗色蒙版;特效自身不透明度保持原版,背景图无需变透明 */
  mix-blend-mode: screen;
}

/* ── 主题明暗适配 ────────────────────────────────────────────────
   流体算法面向暗色底设计(screen 叠光只加亮):
   · 暗色模式:hero 遮罩 0.8,背景板最暗,默认即是最佳观感;
   · 亮色模式:hero 遮罩 0.7,背景板稍亮,叠光偏易泛白,
     补一点饱和度/亮度让流体同样鲜亮。 */
body:not(.dark-mode) .hero-fx-canvas {
  filter: saturate(1.25) brightness(1.05);
}

/* 主题明暗适配:面板跟随站点主题,不使用固定深色外观 */
body:not(.dark-mode) .hero-fx-body {
  color: #263238;
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.2);
}

body:not(.dark-mode) .hero-fx-head {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

body:not(.dark-mode) .hero-fx-title,
body:not(.dark-mode) .hero-fx-item-name {
  color: #263238;
}

body:not(.dark-mode) .hero-fx-item + .hero-fx-item {
  border-top-color: rgba(0, 0, 0, 0.08);
}

body:not(.dark-mode) .hero-fx-ctl {
  color: rgba(38, 50, 56, 0.86);
}

body:not(.dark-mode) .hero-fx-val {
  color: rgba(38, 50, 56, 0.62);
}

body:not(.dark-mode) .hero-fx-ctl select {
  color: #263238;
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.16);
}

body:not(.dark-mode) .hero-fx-ctl select option {
  background: #fff;
  color: #263238;
}

body:not(.dark-mode) .hero-fx-btn {
  color: #263238;
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.16);
}

body:not(.dark-mode) .hero-fx-btn:hover {
  background: rgba(0, 0, 0, 0.1);
}

/* ── 控制面板 ──────────────────────────────────────────────────── */
.hero-fx-panel {
  position: absolute;
  right: 18px;
  bottom: 18px;
  box-sizing: border-box;
  max-width: calc(100% - 24px);
  z-index: 10; /* 面板由 hero-panel.js 挂到 .hero-section,浮在文字之上 */
  pointer-events: auto;
  font-size: 0.82rem;
  color: var(--text-color, #eee);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

/* 折叠胶囊按钮 */
.hero-fx-toggle {
  pointer-events: auto;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  border-radius: 999px;
  padding: 5px 14px;
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.hero-fx-toggle:hover {
  background: rgba(0, 0, 0, 0.55);
  border-color: var(--accent-color, #0ff);
}

/* 面板主体 */
.hero-fx-body {
  box-sizing: border-box;
  width: min(246px, calc(100vw - 24px));
  max-height: min(58vh, 480px);
  overflow-y: auto;
  border-radius: 12px;
  background: rgba(20, 22, 28, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.35);
}

.hero-fx-panel.collapsed .hero-fx-body {
  display: none;
}

.hero-fx-head {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 8px;
  background: rgba(20, 22, 28, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-fx-title {
  font-size: 0.86rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.06em;
}

.hero-fx-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 2px 6px;
  border-radius: 6px;
}

.hero-fx-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.hero-fx-list {
  padding: 6px 4px 10px;
}

/* 每个特效一个可折叠分组 */
.hero-fx-item + .hero-fx-item {
  margin-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.hero-fx-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 6px;
}

.hero-fx-item-name {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: none;
  border: none;
  color: #f0f2f5;
  cursor: pointer;
  font-size: 0.84rem;
  padding: 2px 0;
}

.hero-fx-item-icon {
  font-size: 0.95rem;
}

.hero-fx-chevron {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  transition: transform 0.25s ease;
}

.hero-fx-item.collapsed .hero-fx-chevron {
  transform: rotate(-90deg);
}

.hero-fx-item-body {
  padding: 2px 12px 10px 34px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero-fx-item.collapsed .hero-fx-item-body {
  display: none;
}

/* 控件行 */
.hero-fx-ctl {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: rgba(240, 242, 245, 0.85);
}

.hero-fx-ctl-label {
  flex: 0 1 62px;
  min-width: 0;
  font-size: 0.76rem;
  white-space: nowrap;
}

.hero-fx-ctl input[type="range"] {
  flex: 1;
  min-width: 0;
  accent-color: var(--accent-color, #0ff);
  height: 3px;
  cursor: pointer;
}

.hero-fx-ctl input[type="checkbox"] {
  accent-color: var(--accent-color, #0ff);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.hero-fx-ctl select {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.08);
  color: #f0f2f5;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 0.76rem;
  cursor: pointer;
}

.hero-fx-ctl select option {
  background: #1a1d24;
  color: #eee;
}

.hero-fx-val {
  flex: 0 0 34px;
  text-align: right;
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.6);
  font-variant-numeric: tabular-nums;
}

.hero-fx-btn {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #f0f2f5;
  border-radius: 8px;
  padding: 4px 14px;
  font-size: 0.76rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.hero-fx-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--accent-color, #0ff);
}

/* 开关(switch) */
.hero-fx-switch {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 19px;
  flex: 0 0 auto;
}

.hero-fx-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.hero-fx-slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  transition: background 0.2s ease;
  cursor: pointer;
}

.hero-fx-slider::before {
  content: "";
  position: absolute;
  top: 2.5px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s ease;
}

.hero-fx-switch input:checked + .hero-fx-slider {
  background: var(--accent-color, #0ff);
}

.hero-fx-switch input:checked + .hero-fx-slider::before {
  transform: translateX(14px);
}

.hero-fx-switch input:disabled + .hero-fx-slider {
  opacity: 0.35;
  cursor: not-allowed;
}

/* 移动端:面板更小巧,位置避开滚动提示 */
@media (max-width: 768px) {
  .hero-fx-panel {
    right: 8px;
    bottom: 28px;
    max-width: calc(100% - 16px);
  }

  .hero-fx-body {
    width: min(224px, calc(100vw - 24px));
    max-height: min(46vh, calc(100% - 52px));
  }

  .hero-fx-item-body {
    padding-left: 12px;
    padding-right: 10px;
  }

  .hero-fx-ctl-label {
    flex-basis: clamp(50px, 20vw, 62px);
    white-space: normal;
    line-height: 1.2;
  }

  .hero-fx-ctl select,
  .hero-fx-ctl input[type="range"] {
    width: 0;
  }
}