@import url('../style.css');

.diary {
    width: 55vw;
    height: 68vh;
    display: flex;
    border-radius: 1rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
    z-index: 0;
    overflow: hidden;
    position: relative;
    font-family: 'Italianno', cursive;
    font-size: 1.7rem;
    color: #3E2723;
    text-shadow:
        0px 0px 1.2px #3E2723,
        0px 0px 1px #3E2723;
    word-spacing: 2px;
    perspective: 2000px;
}

.diary::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.dark .diary {
    border: 1px solid rgba(255, 255, 255, 0.07);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.55);
}



.page-number {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Italianno', cursive;
    font-size: 20px;
    opacity: 0.7;
    letter-spacing: 3px;
    pointer-events: none;
    user-select: none;
}



.diary::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    transform: translateX(-50%);
    box-shadow:
        -10px 0px 15px rgba(0, 0, 0, 0.2),
        10px 0px 15px rgba(0, 0, 0, 0.2);
    z-index: 5;
}

.dark .page .back {
    color: rgba(255, 255, 255, 0.85);
    text-shadow:
        0 0 2px rgba(255, 255, 255, 0.15),
        0 0 25px rgba(255, 244, 255, 0.06);
}

.page {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: #fffef8;
    overflow: hidden;
    backface-visibility: visible;
    transform-style: preserve-3d;
    transition: text-shadow 0.25s ease;
    cursor: default;
}

@keyframes inkReveal {
    0% {
        opacity: 0;
        filter: blur(6px) brightness(0.8);
        transform: translateY(20px);
        text-shadow: 0px 0px 12px rgba(255, 140, 170, 0.35);
    }

    100% {
        opacity: 1;
        filter: blur(0);
        /* text-shadow: none; */
        transform: translateY(0px);
    }
}

.page .front,
.page .back {
    position: absolute;
    inset: 0;
    padding: 2.5rem 2rem;
    backface-visibility: hidden;
    transform-style: preserve-3d;
}


.page .back {
    /* margin-top: 1rem; */
    opacity: 0.15;
    filter: blur(2px);
    color: #3e2723;
    transform: rotateY(180deg);
    backface-visibility: visible;
    transform-style: preserve-3d;
}


.left-page {
    position: absolute;
    transform-origin: right center;
    left: 0;
    z-index: 1;
    border-right: 2px solid #e5dcd2;
    box-shadow: inset -12px 0 25px rgba(0, 0, 0, 0.07);
}

.page:hover {
    text-shadow:
        0 0 1px rgba(62, 39, 35, 0.95),
        /* inner ink edge */
        0 0 4px rgba(255, 160, 185, 0.75),
        /* brighter glow */
        0 0 9px rgba(255, 130, 165, 0.55),
        /* medium bloom */
        0 0 15px rgba(255, 110, 155, 0.45),
        /* strong outer bloom */
        0 0 18px rgba(255, 90, 140, 0.25);
    /* romantic aura */
}



body.dark .page:hover {
    text-shadow:
        0 0 1px rgba(62, 39, 35, 0.95),
        0 0 11px rgba(255, 130, 165, 0.55),
        0 0 18px rgba(255, 90, 140, 0.38),
        0 0 28px rgba(255, 70, 130, 0.25);
}



/* --- soft curl shadow layer --- */
.page::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 50%, rgba(0, 0, 0, 0.15), transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.right-page {
    left: 50%;
    transform-origin: left center;
    z-index: 2;
    box-shadow: inset 12px 0 25px rgba(0, 0, 0, 0.07);
}

.dark .page {
    background: #2a223d;
    color: #e8dff8;
}

.left-page::before,
.right-page::before {
    content: "";
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Fold shadow leaning toward the spine */
.left-page::before {
    left: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.07), transparent 70%);
}

.right-page::before {
    right: 0;
    background: linear-gradient(to left, rgba(0, 0, 0, 0.07), transparent 70%);
}

.dark .left-page::before {
    background: linear-gradient(to right, rgba(0, 0, 0, 0.3), transparent 60%);
}

.dark .right-page::before {
    background: linear-gradient(to left, rgba(0, 0, 0, 0.3), transparent 60%);
}


.curl-RL {
    box-shadow: inset 20px 0 40px rgba(0, 0, 0, 0.2);
    animation: flipRTL 1.5s forwards ease-in-out;
    z-index: 999;
}

.curl-LR {
    box-shadow: inset -20px 0 40px rgba(0, 0, 0, 0.2);
    animation: flipLTR 1.5s forwards ease-in-out;
    z-index: 999;
}

@keyframes flipRTL {
    0% {
        transform: rotateY(0deg);
    }

    8% {
        transform: rotateY(-10deg);
    }

    18% {
        transform: rotateY(-25deg);
    }

    30% {
        transform: rotateY(-55deg);
    }

    42% {
        transform: rotateY(-95deg);
    }

    55% {
        transform: rotateY(-125deg);
    }

    70% {
        transform: rotateY(-150deg);
    }

    84% {
        transform: rotateY(-168deg);
    }

    100% {
        transform: rotateY(-180deg);
    }
}


@keyframes flipLTR {
    0% {
        transform: rotateY(0deg);
    }

    8% {
        transform: rotateY(10deg);
    }

    18% {
        transform: rotateY(25deg);
    }

    30% {
        transform: rotateY(55deg);
    }

    42% {
        transform: rotateY(95deg);
    }

    55% {
        transform: rotateY(125deg);
    }

    70% {
        transform: rotateY(150deg);
    }

    84% {
        transform: rotateY(168deg);
    }

    100% {
        transform: rotateY(180deg);
    }
}

.page .front p {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(4px);
}



.page[data-num="1"],
.page[data-num="2"] {
    display: block;
}


.curl-RL,
.curl-LR {
    transform-style: preserve-3d;
    animation-timing-function: ease-in-out;
    animation-fill-mode: forwards;
}

.page.curl-RL,
.page.curl-LR {
    filter: drop-shadow(0 0 8px rgba(0, 0, 0, 0.4));
}

@media (max-width: 1230px) {
    .diary {
        font-size: 1.4rem;
    }
}

@media (max-width: 950px) {
    .diary {
        font-size: 1.1rem;
        width: 65vw;
    }
}

@media (max-width: 600px) {
    .diary {
        font-size: 1.1rem;
        width: 80vw;
    }
}