/* ===== Ayoo Floating Toolbar — FAB Style ===== */

/* ── FAB 容器（右侧垂直排列） ── */
.fab-container {
  position: fixed;
  right: 1.5rem;
  bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  z-index: 9990;
  -webkit-tap-highlight-color: transparent;
  pointer-events: none;
}
.fab-container > * {
  pointer-events: auto;
}

/* ── FAB 按钮基础 ── */
.fab-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.25s var(--ease),
              background 0.2s var(--ease),
              color 0.2s var(--ease),
              border-color 0.2s var(--ease),
              opacity 0.3s var(--ease);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  outline: none;
}
.fab-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px) scale(1.06);
  box-shadow: 0 6px 18px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.06);
}
.fab-btn:active {
  transform: scale(0.9);
  transition: transform 0.1s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.fab-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

/* ── 主设置按钮（稍大，accent 色） ── */
.fab-btn-main {
  width: 50px;
  height: 50px;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-size: 1.2rem;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 35%, transparent);
}
.fab-btn-main:hover {
  background: var(--accent-hover);
  color: #fff;
  border-color: var(--accent-hover);
  transform: translateY(-2px) scale(1.06);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 45%, transparent);
}
.fab-btn-main:active {
  transform: scale(0.9);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 30%, transparent);
}

/* ── 返回顶部按钮（默认隐藏，滚动后显示） ── */
.fab-btn-top {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px) scale(0.85);
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.2s var(--ease),
              background 0.2s var(--ease),
              color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}
.fab-btn-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* ── 设置弹窗 ── */
.fab-popup {
  position: fixed;
  right: 5.75rem;
  bottom: 2.25rem;
  width: 300px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.08);
  padding: 1.25rem 1.15rem;
  z-index: 9989;
  opacity: 0;
  transform: translateY(6px) scale(0.94);
  pointer-events: none;
  transition: opacity 0.22s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.fab-popup.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* ── 弹窗箭头（指向主设置按钮） ── */
.fab-popup::after {
  content: '';
  position: absolute;
  right: -7px;
  bottom: 1.9rem;
  width: 14px;
  height: 14px;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: rotate(45deg);
  /* 让边框接缝更自然 */
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

/* ── 弹窗标题 ── */
.fab-popup-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── 分组 ── */
.fab-group {
  margin-bottom: 1rem;
}
.fab-group:last-child {
  margin-bottom: 0;
}
.fab-group-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
  padding-left: 0.05rem;
}

/* ── 按钮行 ── */
.fab-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* ── 选项按钮 ── */
.fab-opt {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
  line-height: 1.45;
  outline: none;
  flex-shrink: 0;
}
.fab-opt:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-1px);
}
.fab-opt:active {
  transform: scale(0.96);
}
.fab-opt.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 30%, transparent);
}
.fab-opt.active:hover {
  background: var(--accent-hover);
  color: #fff;
}

/* ── 背景色圆形按钮 ── */
.fab-bg-btn {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 50%;
  position: relative;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.2s var(--ease),
              transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.2s var(--ease);
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  flex-shrink: 0;
}
.fab-bg-btn:hover {
  transform: scale(1.18);
  box-shadow: 0 3px 8px rgba(0,0,0,0.15);
}
.fab-bg-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
  transform: scale(1.1);
}
.fab-bg-btn.active::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.fab-bg-btn.dark-swatch.active::after {
  color: #fff;
}
/* 深色色块的非 active 边框处理：显示 subtle 边框 */
.fab-bg-btn.dark-swatch {
  border-color: var(--border);
}

/* ── 分隔线 ── */
.fab-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.75rem 0;
}

/* ── 遮罩层 ── */
.fab-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.2);
  z-index: 9988;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}
.fab-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── 移动端适配（≤640px） ── */
@media (max-width: 640px) {
  .fab-container {
    right: 0.75rem;
    bottom: 1.5rem;
    gap: 0.6rem;
  }
  .fab-btn {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
  .fab-btn svg {
    width: 16px;
    height: 16px;
  }
  .fab-btn-main {
    width: 46px;
    height: 46px;
    font-size: 1.1rem;
  }
  .fab-popup {
    right: 4rem;
    bottom: 1.5rem;
    width: calc(100vw - 5rem);
    max-width: 300px;
    max-height: calc(100dvh - 3rem);
    overflow-y: auto;
    padding: 1rem;
    border-radius: 12px;
    /* 移动端用底部弹出风格 */
    transform: translateY(10px) scale(0.94);
  }
  .fab-popup.active {
    transform: translateY(0) scale(1);
  }
  .fab-popup::after {
    bottom: 1.75rem;
    right: -6px;
    width: 12px;
    height: 12px;
  }
  .fab-opt {
    padding: 0.45rem 0.7rem;
    font-size: 0.78rem;
    border-radius: 7px;
  }
  .fab-bg-btn {
    width: 28px;
    height: 28px;
  }
  .fab-group-label {
    font-size: 0.68rem;
  }
}

/* ── 极小屏适配（≤380px） ── */
@media (max-width: 380px) {
  .fab-container {
    right: 0.5rem;
    bottom: 1rem;
    gap: 0.5rem;
  }
  .fab-btn {
    width: 44px;
    height: 44px;
    font-size: 0.95rem;
  }
  .fab-btn-main {
    width: 44px;
    height: 44px;
    font-size: 1.05rem;
  }
  .fab-popup {
    right: 3.25rem;
    bottom: 1rem;
    width: calc(100vw - 4rem);
    max-height: calc(100dvh - 2rem);
    padding: 0.85rem;
  }
  .fab-popup::after {
    bottom: 1.5rem;
  }
}