/* Sistema de Slides — visualizador público.
   Reaproveita a paleta e a tipografia já usadas no site (Julius Sans One
   nos títulos, Arial no corpo, azul #007bff de destaque, cartões com
   raio 8px) para que o player pareça parte do mesmo site, não um plugin. */

.slide-player {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px 48px;
    overflow: hidden;
}

.slide-player__background {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-color: #1a202c;
    transition: background-image 0.2s ease-in-out;
}

/* O fundo é sempre a mesma imagem original — o "apagado" é só este
   gradiente, então nunca precisamos reprocessar/re-upar uma imagem
   escurecida à parte. */
.slide-player__scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(20, 24, 32, 0.55) 0%,
        rgba(20, 24, 32, 0.72) 60%,
        rgba(20, 24, 32, 0.82) 100%
    );
}

.slide-player__loading,
.slide-player__error {
    position: relative;
    z-index: 2;
    color: #fff;
    font-family: Arial, sans-serif;
}

.slide-player__error {
    background: #fff;
    color: #333;
    border-radius: 8px;
    padding: 16px 20px;
    max-width: 480px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.slide-player__frame {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 720px;
    background: rgba(255, 255, 255, 0.97);
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    padding: 24px 28px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.slide-player__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: Arial, sans-serif;
    font-size: 14px;
    color: #666;
}

.slide-player__back {
    color: #007bff;
    text-decoration: none;
}

.slide-player__back:hover {
    color: #0056b3;
    text-decoration: underline;
}

.slide-player__progress {
    font-variant-numeric: tabular-nums;
}

.slide-player__title {
    font-family: "Julius Sans One", sans-serif;
    font-size: 1.6em;
    color: #333;
    margin: 0;
}

.slide-player__blocks {
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-family: Arial, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Blocos de conteúdo */

.slide-block--text p {
    margin: 0 0 0.75em;
}

.slide-block--lead p {
    font-size: 1.15em;
    color: #333;
}

.slide-block--image img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
    background-color: #f0f0f0; /* placeholder até a imagem carregar */
}

.slide-block--image figcaption {
    margin-top: 6px;
    font-size: 0.85em;
    color: #666;
    text-align: center;
}

.slide-block--video figcaption {
    margin-top: 6px;
    font-size: 0.85em;
    color: #666;
    text-align: center;
}

.video-facade {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: #000;
}

.video-facade__thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-facade__play {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 64px;
    height: 64px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
}

.video-facade__play::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 55%;
    transform: translate(-50%, -50%);
    border-style: solid;
    border-width: 12px 0 12px 20px;
    border-color: transparent transparent transparent #fff;
}

.video-facade__iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    border: 0;
}

.slide-link {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.95em;
}

.slide-link--internal {
    background-color: #007bff;
    color: #fff;
}

.slide-link--internal:hover {
    background-color: #0056b3;
}

.slide-link--external {
    border: 1px solid #007bff;
    color: #007bff;
}

.slide-link--external:hover {
    background-color: #f0f8ff;
}

/* Navegação */

.slide-player__nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding-top: 8px;
    border-top: 1px solid #e2e8f0;
}

.slide-nav-btn {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 5px;
    font-size: 15px;
    cursor: pointer;
}

.slide-nav-btn:hover:not(:disabled) {
    background-color: #0056b3;
}

.slide-nav-btn:disabled {
    background-color: #ccc;
    cursor: default;
}

/* Índice de decks (/decks) — reaproveita .books/.book-info/.book-presentation
   já usados na vitrine de livros para manter o mesmo visual de cartão. */

.slides-deck-index__intro {
    color: #666;
    margin-bottom: 16px;
}

@media (max-width: 600px) {
    .slide-player {
        padding: 12px 8px 32px;
    }
    .slide-player__frame {
        padding: 18px 16px 16px;
        border-radius: 8px;
    }
    .slide-player__title {
        font-size: 1.3em;
    }
}