/* Trình chiếu ảnh toàn màn hình (Autoplay) — js/album-slideshow.js */
html.sa-ss-on { overflow: hidden; }

.sa-slideshow {
    position: fixed;
    inset: 0;
    z-index: 3000; /* trên LightGallery */
    overflow: hidden;
    background: #000;
    color: #fff;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    user-select: none;
}
.sa-slideshow[hidden] { display: none; }

/* Nền mờ lấy từ chính ảnh đang chiếu */
.ss-bg {
    position: absolute;
    inset: -60px;
    background: center / cover no-repeat;
    filter: blur(40px) brightness(.55);
    transition: background-image .8s;
}

.ss-stage {
    position: absolute;
    inset: 0;
    perspective: 1400px;
}
.ss-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.ss-img.ss-out { animation: ss-out .8s ease forwards; z-index: 0; }
.ss-img.ss-in { z-index: 1; animation-duration: 1s; animation-fill-mode: both; animation-timing-function: ease-out; }

@keyframes ss-out { to { opacity: 0; } }

.fx-fade { animation-name: ss-fade; }
@keyframes ss-fade { from { opacity: 0; } }

.fx-top-bottom { animation-name: ss-top-bottom; }
@keyframes ss-top-bottom { from { transform: translateY(-100%); opacity: 0; } }

.fx-light-speed { animation-name: ss-light-speed; }
@keyframes ss-light-speed {
    0%   { transform: translateX(100%) skewX(-30deg); opacity: 0; }
    60%  { transform: skewX(20deg); opacity: 1; }
    80%  { transform: skewX(-5deg); }
    100% { transform: none; }
}

.fx-rotate { animation-name: ss-rotate; }
@keyframes ss-rotate { from { transform: rotate(-200deg) scale(.6); opacity: 0; } }

.fx-bottom-left { animation-name: ss-bottom-left; }
@keyframes ss-bottom-left { from { transform: translate(-100%, 100%); opacity: 0; } }

.fx-roll-in { animation-name: ss-roll-in; }
@keyframes ss-roll-in { from { transform: translateX(-100%) rotate(-120deg); opacity: 0; } }

.fx-zoom-in { animation-name: ss-zoom-in; }
@keyframes ss-zoom-in { from { transform: scale(.3); opacity: 0; } }

.fx-flip { animation-name: ss-flip; backface-visibility: hidden; }
@keyframes ss-flip {
    0%   { transform: rotateY(90deg); opacity: 0; }
    40%  { transform: rotateY(-15deg); opacity: 1; }
    70%  { transform: rotateY(8deg); }
    100% { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    .ss-img.ss-in { animation-name: ss-fade; }
}

/* ── Nút điều khiển ── */
.ss-ui {
    position: absolute;
    z-index: 2;
    transition: opacity .4s;
}
.sa-slideshow.ss-idle { cursor: none; }
.sa-slideshow.ss-idle .ss-ui { opacity: 0; pointer-events: none; }

.ss-top {
    top: 14px;
    right: 14px;
    display: flex;
    gap: 6px;
}
.ss-icon {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 10px;
    background: none;
    color: #fff;
    font-size: 34px;
    cursor: pointer;
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, .6));
    transition: background .2s;
}
.ss-icon:hover,
.ss-icon.active { background: rgba(255, 255, 255, .14); }

.ss-qr {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    padding: 14px;
    border-radius: 12px;
    background: #fff;
    color: #222;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
}
.ss-qr[hidden] { display: none; }
.ss-qr-code img,
.ss-qr-code canvas { display: block; margin: 0 auto; }
.ss-qr-text { margin-top: 10px; font-size: 13px; font-weight: 500; }

.ss-controls {
    right: 14px;
    bottom: 14px;
    display: flex;
    align-items: flex-end;
    gap: 10px;
}
.ss-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 40px;
    padding: 0 14px;
    border: 0;
    border-radius: 4px;
    background: rgba(25, 25, 25, .92);
    color: #fff;
    font-size: 15px;
    white-space: nowrap;
    cursor: pointer;
    transition: background .2s;
}
.ss-btn:hover { background: rgba(60, 60, 60, .95); }
.ss-btn .mdi { font-size: 18px; line-height: 1; }

.ss-dd { position: relative; }
.ss-dd-toggle { justify-content: space-between; }
.ss-dd[data-dd="speed"] .ss-dd-toggle { min-width: 104px; }
.ss-dd[data-dd="effect"] .ss-dd-toggle { min-width: 128px; }
.ss-dd-menu {
    position: absolute;
    right: 0;
    bottom: calc(100% + 6px); /* mở lên trên */
    min-width: 100%;
    max-height: 70vh;
    overflow-y: auto;
    padding: 6px;
    border-radius: 4px;
    background: rgba(25, 25, 25, .96);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
    display: grid;
    gap: 2px;
}
.ss-dd-menu[hidden] { display: none; }
.ss-dd-menu button {
    border: 0;
    border-radius: 3px;
    background: none;
    color: #ddd;
    text-align: left;
    padding: 7px 12px;
    font-size: 15px;
    white-space: nowrap;
    cursor: pointer;
}
.ss-dd-menu button:hover { background: rgba(255, 255, 255, .1); color: #fff; }
.ss-dd-menu button.active { background: rgba(255, 255, 255, .85); color: #111; }

@media (max-width: 576px) {
    .ss-controls {
        left: 10px;
        right: 10px;
        bottom: 10px;
        justify-content: center;
        gap: 6px;
    }
    .ss-btn { height: 38px; padding: 0 10px; font-size: 14px; }
    .ss-full-label { display: none; } /* chỉ còn icon cho đủ chỗ */
    .ss-dd[data-dd="speed"] .ss-dd-toggle { min-width: 82px; }
    .ss-dd[data-dd="effect"] .ss-dd-toggle { min-width: 0; }
    .ss-icon { width: 42px; height: 42px; font-size: 28px; }
}