:root {
    color-scheme: dark;
    font-family: var(--font-ui, 'Inter', 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Segoe UI', 'NanumSquareRound', sans-serif);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    background: #09090b;
    color: #fafafa;
}

button,
a {
    font: inherit;
}

.slide-viewer {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    height: 100dvh;
    min-height: 100dvh;
    background: #09090b;
}

.slide-viewer__toolbar,
.slide-viewer__controls {
    display: grid;
    align-items: center;
    gap: 16px;
    background: rgba(9, 9, 11, 0.96);
    padding-right: max(18px, env(safe-area-inset-right));
    padding-left: max(18px, env(safe-area-inset-left));
    position: relative;
    z-index: 5;
}

.slide-viewer__toolbar {
    grid-template-columns: minmax(92px, auto) minmax(0, 1fr) minmax(116px, auto);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 62px;
    padding-top: max(10px, env(safe-area-inset-top));
    padding-bottom: 10px;
}

.slide-viewer__controls {
    grid-template-columns: minmax(92px, auto) minmax(140px, 360px) minmax(92px, auto);
    justify-content: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 68px;
    padding-top: 10px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
}

.slide-viewer__title {
    overflow: hidden;
    margin: 0;
    font-size: 15px;
    font-weight: 800;
    line-height: 1.4;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.slide-viewer__back,
.slide-viewer__fullscreen,
.slide-viewer__button {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    color: #fafafa;
    cursor: pointer;
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    transition: background 140ms ease, border-color 140ms ease, opacity 140ms ease;
}

.slide-viewer__back,
.slide-viewer__fullscreen {
    padding: 8px 13px;
}

.slide-viewer__button {
    min-width: 92px;
    padding: 8px 16px;
}

.slide-viewer__back:hover,
.slide-viewer__fullscreen:hover,
.slide-viewer__button:hover:not(:disabled) {
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(255, 255, 255, 0.14);
}

.slide-viewer__back:focus-visible,
.slide-viewer__fullscreen:focus-visible,
.slide-viewer__button:focus-visible {
    outline: 3px solid #a78bfa;
    outline-offset: 2px;
}

.slide-viewer__button:disabled {
    cursor: default;
    opacity: 0.35;
}

.slide-viewer__stage {
    position: relative;
    min-height: 0;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 44%, rgba(124, 58, 237, 0.12), transparent 46%),
        #111114;
}

.slide-viewer__frame {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    background: #111114;
}

.slide-viewer__status {
    position: absolute;
    top: 50%;
    left: 50%;
    max-width: min(420px, calc(100% - 40px));
    transform: translate(-50%, -50%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    background: rgba(9, 9, 11, 0.88);
    padding: 12px 16px;
    color: #d4d4d8;
    font-size: 13px;
    font-weight: 700;
    text-align: center;
}

.slide-viewer__status span {
    display: block;
}

.slide-viewer__status a {
    display: inline-flex;
    margin-top: 9px;
    color: #c4b5fd;
    font-weight: 850;
    text-underline-offset: 3px;
}

.slide-viewer__status a:focus-visible {
    outline: 3px solid #a78bfa;
    outline-offset: 3px;
}

.slide-viewer__status[hidden] {
    display: none;
}

.slide-viewer__progress-group {
    display: grid;
    gap: 7px;
    width: min(360px, 100%);
}

.slide-viewer__counter {
    color: #e4e4e7;
    font-size: 13px;
    font-variant-numeric: tabular-nums;
    font-weight: 800;
    text-align: center;
}

.slide-viewer__progress {
    height: 4px;
    overflow: hidden;
    border-radius: 99px;
    background: rgba(255, 255, 255, 0.13);
}

.slide-viewer__progress-value {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: #8b5cf6;
    transition: width 160ms ease;
}

@media (max-width: 640px) {
    .slide-viewer__toolbar {
        grid-template-columns: 48px minmax(0, 1fr) 48px;
        min-height: 54px;
        padding-right: max(10px, env(safe-area-inset-right));
        padding-left: max(10px, env(safe-area-inset-left));
    }

    .slide-viewer__toolbar .slide-viewer__back,
    .slide-viewer__toolbar .slide-viewer__fullscreen {
        min-width: 42px;
        padding: 8px;
    }

    .slide-viewer__toolbar .slide-viewer__back span:last-child,
    .slide-viewer__toolbar .slide-viewer__fullscreen span:last-child {
        display: none;
    }

    .slide-viewer__controls {
        grid-template-columns: 78px minmax(100px, 1fr) 78px;
        gap: 10px;
        padding-right: max(10px, env(safe-area-inset-right));
        padding-left: max(10px, env(safe-area-inset-left));
    }

    .slide-viewer__button {
        min-width: 0;
        padding: 8px 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .slide-viewer__back,
    .slide-viewer__fullscreen,
    .slide-viewer__button,
    .slide-viewer__progress-value {
        transition: none;
    }
}