@charset "utf-8";

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100;300;400;500;700;900&display=swap');

/* CSS Document */

.before-after-container {
    --border-color: #ffffff; /* 境界線の色 */
    --slide-bg-color: #00B3B1; /* スライドテキストの背景色 */
    --slide-text-color: #ffffff; /* スライドテキストの文字色 */
    --slide-text: "←Slide→"; /* スライドのテキスト */
    --border-width: 4px; /* 境界線の幅 */
    position: relative;
    display: inline-block;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    margin-bottom: 15px;
}

.before-image, .after-image {
    display: block;
    width: 100%;
    height: auto;
}

.after-image {
    position: absolute;
    top: 0;
    left: 0;
    clip-path: polygon(50% 0, 100% 0, 100% 100%, 50% 100%);
}

.slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: var(--border-width);
    background: var(--border-color);
    cursor: ew-resize;
    z-index: 10;
}

.slider-handle::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 30px; /* 当たり判定を広げる幅 */
    transform: translateX(-50%);
    background: transparent;
    pointer-events: auto;
}

.slider-handle::after {
    content: var(--slide-text);
    position: absolute;
    top: 50%;
    left: 50%;
    background: var(--slide-bg-color);
    color: var(--slide-text-color);
    transform: translate(-50%, -50%);
    padding: 5px;
    border-radius: 5px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0.8;
    transition: opacity 0.3s ease;
    font-weight: bold;
    pointer-events: auto;
    animation: slideText 0.5s ease-in-out infinite;
}

.slider-handle.active::after {
    opacity: 0;
}

.slider-handle.used::after {
  animation: none;
  content: "";
  width: 15px;
  height: 15px;
  opacity: 1;
  border-radius: 50%;
  background: var(--border-color);
}

@keyframes slideText {
    0%, 100% { transform: translate(-50%, -50%) translateX(-2px); }
    50% { transform: translate(-50%, -50%) translateX(2px); }
}