/* — GLOBAL — */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Playfair Display', serif;
    background: #f0f0f0;
    overflow-x: hidden;
}

/* — CONTENEDOR DEL “LIBRO” — */
#book {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* — PORTADA TIPO LIBRO — */
.book-cover {
    position: relative;
    width: 300px;
    height: 400px;
    margin: 0 auto 2rem auto;
    background: #0a2342;
    border: 8px solid #d4af37;
    border-radius: 6px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* Si ya no quieres SVG externos, coméntalos o sustituye por puro CSS */
.ornament {
    position: absolute;
    width: 60px;
    height: 60px;
    background: url('/images/ornament.svg') no-repeat center/contain;
}

.top-left {
    top: 0;
    left: 0;
    transform: rotate(0deg);
}

.top-right {
    top: 0;
    right: 0;
    transform: rotate(90deg);
}

.bottom-right {
    bottom: 0;
    right: 0;
    transform: rotate(180deg);
}

.bottom-left {
    bottom: 0;
    left: 0;
    transform: rotate(270deg);
}

.silhouette {
    position: absolute;
    top: 60px;
    left: 50%;
    width: 100px;
    height: 120px;
    transform: translateX(-50%);
    background: url('/images/silhouette.svg') no-repeat center/contain;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.2);
}

.ribbon {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 40px;
    transform: translateY(-50%);
    background: #c72e41;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.jewel {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 32px;
    height: 32px;
    transform: translate(-50%,-50%) rotate(45deg);
    background: #0056b3;
    border: 4px solid #d4af37;
    box-shadow: 0 0 8px rgba(0,0,0,0.5);
    border-radius: 4px;
}

/* — NAVEGACIÓN POR PÁGINAS — */
.page {
    display: none;
    width: 100%;
}

    .page.current {
        display: block;
    }

.nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    color: rgba(0,0,0,0.3);
    cursor: pointer;
    z-index: 100;
    user-select: none;
}

    .nav.left {
        left: 1rem;
    }

    .nav.right {
        right: 1rem;
    }

    .nav:hover {
        color: rgba(0,0,0,0.6);
    }

/* — DOBLE PÁGINA (SPREAD) — */
.spread {
    display: flex;
    position: relative;
    margin: 0 auto 2rem auto;
    background: #fdfdf7;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.2);
    overflow: visible;
    min-height: 75vh; /* altura fija mínima */
    border-top: 20px solid #0a2342; /* pasta superior */
    border-bottom: 20px solid #0a2342; /* pasta inferior */
}

    /* lomo dorado */
    .spread::before {
        content: "";
        position: absolute;
        top: 0;
        left: 50%;
        width: 6px;
        height: 100%;
        background: #d4af37;
        transform: translateX(-50%);
        z-index: 5;
    }

/* páginas lado a lado */
.page-half {
    flex: 1;
    position: relative;
    background: #fdfdf7;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.1);
    overflow: visible;
    padding: 1rem;
}

    /* solapas azules */
    .page-half.left-page::before {
        content: "";
        position: absolute;
        top: 0;
        left: -20px;
        width: 20px;
        height: 100%;
        background: #0a2342;
        z-index: 2;
    }

    .page-half.right-page::after {
        content: "";
        position: absolute;
        top: 0;
        right: -20px;
        width: 20px;
        height: 100%;
        background: #0a2342;
        z-index: 2;
    }

    /* — HERO (izquierda) — */
    .page-half.left-page .hero {
        margin: 0;
        height: 100%;
    }

        .page-half.left-page .hero img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

    /* — MEMORY (derecha) — */
    .page-half.right-page {
        padding: 2rem;
        background-image: repeating-linear-gradient( to bottom, #fdfdf7, #fdfdf7 30px, #e0e0e0 31px );
        border-left: 4px solid #f28c8c;
    }

        .page-half.right-page .memory {
            max-width: 500px;
            margin: auto;
            text-align: center;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }








.petalo {
    position: fixed;
    top: -50px;
    width: 35px;
    height: 22px;
    background: radial-gradient(circle at 50% 40%, #d80027, #a0001d);
    border-radius: 50% 70% 50% 50% / 60% 80% 40% 40%;
    transform: rotate(-20deg) skewX(-10deg);
    opacity: 0.85;
    pointer-events: none;
    z-index: 9999;
    animation: caer linear infinite;
}

@keyframes caer {
    0% {
        transform: translateX(0) translateY(0) rotate(0deg);
        opacity: 1;
    }

    50% {
        transform: translateX(15px) translateY(50vh) rotate(180deg);
    }

    100% {
        transform: translateX(-15px) translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.vertical-line {
    position: absolute;
    top: 50px;
    left: 50%;
    width: 2px;
    height: calc(100% - 50px);
    background-color: #c5a900;
    transform: translateX(-50%);
    z-index: 1;
}