* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: #0a0a0a;
    color: #e0e0e0;
    font-family: 'Special Elite', 'Courier Prime', serif;
    overflow: hidden;
    height: 100vh;
    position: relative;
}

.film-grain {
    position: fixed;
    inset: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="300" height="300"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="300" height="300" filter="url(%23n)" opacity="1"/></svg>');
    opacity: 0.15;
    pointer-events: none;
    z-index: 1000;
    animation: grainShift 0.5s infinite;
}

@keyframes grainShift {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(-2px, -2px);
    }
}

.vignette {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at center, transparent 20%, rgba(0, 0, 0, 0.95));
    pointer-events: none;
    z-index: 997;
}

.scanlines {
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(0deg,
            rgba(0, 0, 0, 0.15),
            rgba(0, 0, 0, 0.15) 1px,
            transparent 1px,
            transparent 2px);
    pointer-events: none;
    z-index: 998;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(100vh);
    }
}

.book-container {
    position: fixed;
    inset: 0;
    perspective: 2000px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.book {
    position: relative;
    width: min(90vw, 900px);
    height: min(90vh, 650px);
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.book-spine {
    position: absolute;
    left: -20px;
    top: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(90deg, #1a1a1a 0%, #0a0a0a 50%, #1a1a1a 100%);
    transform: rotateY(-90deg);
    transform-origin: right;
    box-shadow: inset -5px 0 15px rgba(0, 0, 0, 0.9);
}

.page {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 50%, #1a1a1a 100%);
    border: 3px solid #3a3a3a;
    overflow: hidden;
    backface-visibility: hidden;
    transform-origin: left center;
    box-shadow:
        inset 0 0 80px rgba(0, 0, 0, 0.5),
        5px 5px 30px rgba(0, 0, 0, 0.9),
        -2px 0 15px rgba(0, 0, 0, 0.6);
}

.page::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(45deg,
            transparent,
            transparent 10px,
            rgba(255, 255, 255, 0.01) 10px,
            rgba(255, 255, 255, 0.01) 11px),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="8" numOctaves="4"/><feColorMatrix values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.05 0"/></filter><rect width="200" height="200" filter="url(%23noise)"/></svg>');
    pointer-events: none;
}

.page::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 10% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
        radial-gradient(ellipse at 90% 80%, rgba(0, 0, 0, 0.4) 0%, transparent 50%);
    pointer-events: none;
}

.page.turning-forward {
    animation: turnForward 1s cubic-bezier(0.645, 0.045, 0.355, 1) forwards;
}

.page.turning-backward {
    animation: turnBackward 1s cubic-bezier(0.645, 0.045, 0.355, 1) forwards;
}

@keyframes turnForward {
    0% {
        transform: perspective(2000px) rotateY(0deg);
        box-shadow: 5px 5px 30px rgba(0, 0, 0, 0.9);
    }

    50% {
        transform: perspective(2000px) rotateY(-90deg) translateZ(50px);
        box-shadow: -30px 0 80px rgba(0, 0, 0, 0.95);
    }

    100% {
        transform: perspective(2000px) rotateY(-180deg);
        box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    }
}

@keyframes turnBackward {
    0% {
        transform: perspective(2000px) rotateY(-180deg);
    }

    50% {
        transform: perspective(2000px) rotateY(-90deg) translateZ(50px);
        box-shadow: 30px 0 80px rgba(0, 0, 0, 0.95);
    }

    100% {
        transform: perspective(2000px) rotateY(0deg);
        box-shadow: 5px 5px 30px rgba(0, 0, 0, 0.9);
    }
}

.page-content {
    padding: 3rem 4rem;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    z-index: 2;
    color: #e0e0e0;
    -webkit-overflow-scrolling: touch;
}

.page-content::-webkit-scrollbar {
    width: 10px;
}

.page-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.5);
    border-left: 1px solid #3a3a3a;
}

.page-content::-webkit-scrollbar-thumb {
    background: #505050;
    border-left: 2px solid #707070;
}

.cover {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #0a0a0a;
    position: relative;
}

.cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.02) 2px, rgba(255, 255, 255, 0.02) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255, 255, 255, 0.02) 2px, rgba(255, 255, 255, 0.02) 4px);
    opacity: 0.3;
}

.cover-title {
    font-family: 'Creepster', cursive;
    font-size: clamp(4rem, 10vw, 8rem);
    margin-bottom: 2rem;
    letter-spacing: 0.3em;
    color: #ffffff;
    text-shadow:
        -2px -2px 0 #000,
        2px -2px 0 #000,
        -2px 2px 0 #000,
        2px 2px 0 #000,
        0 0 20px rgba(255, 255, 255, 0.5);
    animation: titleGlitch 3s infinite;
    position: relative;
}

@keyframes titleGlitch {

    0%,
    90%,
    100% {
        transform: translate(0);
        text-shadow: -2px -2px 0 #000, 2px -2px 0 #000, -2px 2px 0 #000, 2px 2px 0 #000, 0 0 20px rgba(255, 255, 255, 0.5);
    }

    92% {
        transform: translate(-3px, 3px);
        text-shadow: -2px -2px 0 #ff0000, 2px -2px 0 #00ff00, -2px 2px 0 #0000ff, 2px 2px 0 #000;
    }

    94% {
        transform: translate(3px, -3px);
        text-shadow: -2px -2px 0 #00ff00, 2px -2px 0 #0000ff, -2px 2px 0 #ff0000, 2px 2px 0 #000;
    }
}

.cover-subtitle {
    font-size: 2rem;
    letter-spacing: 0.3em;
    margin-bottom: 3rem;
    color: #c0c0c0;
    opacity: 0.9;
    text-transform: uppercase;
}

.click-to-open {
    font-size: 1.5rem;
    padding: 1.5rem 3rem;
    border: 4px solid #ffffff;
    cursor: pointer;
    transition: all 0.3s;
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    animation: pulse 2s infinite;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 0.2em;
}

.click-to-open::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.click-to-open:hover::before {
    width: 300px;
    height: 300px;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.click-to-open:hover {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.side-nav-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
    background: #1a1a1a;
    border: 3px solid #505050;
    color: #ffffff;
    font-family: 'Press Start 2P', cursive;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 2rem;
    padding: 2rem 1rem;
    box-shadow: 4px 4px 20px rgba(0, 0, 0, 0.9);
    display: none;
}

.side-nav-btn:hover:not(:disabled) {
    background: #2a2a2a;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.side-nav-btn:disabled {
    opacity: 0.2;
    cursor: not-allowed;
}

#prevBtnSide {
    left: 1rem;
}

#nextBtnSide {
    right: 1rem;
}

.page-number {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 999;
    font-size: 1.1rem;
    opacity: 0.5;
    font-family: 'Courier Prime', monospace;
    color: #909090;
}

h2 {
    font-family: 'Creepster', cursive;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 0.2em;
    color: #ffffff;
    text-shadow:
        -1px -1px 0 #000,
        1px -1px 0 #000,
        -1px 1px 0 #000,
        1px 1px 0 #000,
        0 0 10px rgba(255, 255, 255, 0.3);
    border-bottom: 4px solid #505050;
    padding-bottom: 1rem;
    text-transform: uppercase;
}

.info-section {
    background: rgba(0, 0, 0, 0.6);
    border: 3px solid #3a3a3a;
    border-left: 6px solid #606060;
    padding: 2rem;
    margin-bottom: 2rem;
    line-height: 2;
    font-size: 1.1rem;
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.8);
}

.image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    font-size: 4rem;
    opacity: 0.3;
}

.image-placeholder::after {
    content: 'Image Placeholder';
    position: absolute;
    bottom: 1rem;
    font-size: 0.9rem;
    opacity: 0;
    font-family: 'Courier Prime', monospace;
}

.image-filter {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    width: 100%;
    margin-bottom: 1rem;
}

.image-filter img {
    width: 100%;
    display: block;
}

.image-filter::after {
    content: "";
    position: absolute;
    inset: 0;
    background: #8a8a8a;
    mix-blend-mode: multiply;
    pointer-events: none;
}


.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.grid-item {
    aspect-ratio: 3/4;
    border: 4px solid #3a3a3a;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(20, 20, 20, 0.6) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    text-align: center;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.7);
}

.grid-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    transform: translateY(100%);
    transition: transform 0.4s;
}

.grid-item:hover::before {
    transform: translateY(0);
}

.grid-item:hover {
    transform: scale(1.08) rotateZ(2deg);
    border-color: #707070;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.9), 0 0 20px rgba(255, 255, 255, 0.2);
    z-index: 10;
}

.track-display-vhs {
    text-align: center;
    margin-bottom: 1.5rem;
    background: rgba(0, 0, 0, 0.8);
    padding: 1.5rem;
    border: 3px solid #3a3a3a;
    border-top: 6px solid #505050;
}

.track-name-vhs {
    font-size: 1.2rem;
    color: #ffffff;
    font-family: 'Courier Prime', monospace;
    margin-bottom: 0.5rem;
    font-weight: bold;
    text-transform: uppercase;
}

.track-artist-vhs {
    font-size: 0.9rem;
    color: #909090;
}

.player-controls-vhs {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}

.player-btn {
    padding: 0.8rem 1.5rem;
    background: rgba(0, 0, 0, 0.9);
    border: 3px solid #505050;
    color: #ffffff;
    font-family: 'Courier Prime', monospace;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.3s;
    font-weight: bold;
}

.player-btn:hover {
    background: rgba(50, 50, 50, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    justify-content: center;
    margin-top: 1rem;
}

.playlist-archive {
    background: rgba(0, 0, 0, 0.7);
    border: 3px solid #3a3a3a;
    padding: 1.5rem;
    max-height: 250px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.track-item {
    padding: 0.8rem;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
    margin-bottom: 0.5rem;
}

.track-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #505050;
}

.track-item.active {
    background: rgba(255, 255, 255, 0.15);
    border-color: #707070;
    font-weight: bold;
}

.message-input {
    width: 100%;
    min-height: 120px;
    background: rgba(0, 0, 0, 0.8);
    border: 3px solid #3a3a3a;
    color: #e0e0e0;
    padding: 1.2rem;
    font-family: 'Special Elite', monospace;
    margin-bottom: 1.5rem;
    resize: vertical;
    font-size: 1rem;
}

.message-input:focus {
    outline: none;
    border-color: #606060;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.send-btn {
    padding: 1rem 2.5rem;
    background: rgba(0, 0, 0, 0.9);
    border: 4px solid #505050;
    color: #ffffff;
    font-family: 'Creepster', cursive;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all 0.3s;
    text-transform: uppercase;
    font-weight: bold;
}

.send-btn:hover {
    background: rgba(50, 50, 50, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3);
}

.unlock-btn-horror {
    width: 100%;
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.8);
    border: 3px dashed #3a3a3a;
    color: #c0c0c0;
    font-family: 'Special Elite', monospace;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

.unlock-btn-horror:hover {
    background: rgba(30, 30, 30, 0.9);
    border-color: #505050;
}

.message-list {
    margin-top: 2.5rem;
}

.message-bubble {
    background: rgba(0, 0, 0, 0.7);
    border: 3px solid #3a3a3a;
    border-left: 6px solid #505050;
    padding: 1.2rem;
    margin-bottom: 1.2rem;
    border-radius: 0;
    animation: messageAppear 0.5s;
    line-height: 1.7;
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateX(-25px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.message-sender-horror {
    color: #ffffff;
    font-weight: bold;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.message-sender-horror.blurred {
    filter: blur(5px);
    user-select: none;
}

.message-text {
    color: #c0c0c0;
    line-height: 1.7;
}

.message-text.blurred {
    filter: blur(5px);
    user-select: none;
}

.message-timestamp {
    color: #707070;
    font-size: 0.75rem;
    margin-top: 0.5rem;
    display: block;
}

.message-timestamp.blurred {
    filter: blur(5px);
    user-select: none;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.98);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: #1a1a1a;
    border: 4px solid #505050;
    padding: 3rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 10px 60px rgba(0, 0, 0, 0.95);
}

.modal h3 {
    font-family: 'Creepster', cursive;
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: #ffffff;
    text-transform: uppercase;
}

.modal input {
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    border: 3px solid #3a3a3a;
    color: #e0e0e0;
    padding: 1rem;
    margin-bottom: 1rem;
    font-family: 'Courier Prime', monospace;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.modal-btn {
    flex: 1;
    padding: 1rem;
    border: 3px solid #505050;
    background: rgba(0, 0, 0, 0.9);
    color: #ffffff;
    cursor: pointer;
    font-family: 'Special Elite', monospace;
    transition: all 0.3s;
    text-transform: uppercase;
    font-weight: bold;
}

.modal-btn:hover {
    background: rgba(50, 50, 50, 0.9);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.error-msg {
    display: none;
    color: #ff3333;
    text-align: center;
    margin-bottom: 1rem;
    font-weight: bold;
    text-transform: uppercase;
}

@media (max-width: 768px) {
    .page-content {
        padding: 2rem 1.5rem;
        font-size: 0.9rem;
    }

    .cover-title {
        font-family: 'Creepster', cursive;
        font-size: 3.5rem;
    }

    .cover-subtitle {
        font-size: 1.3rem;
    }

    h2 {
        font-size: 2rem;
    }

    .grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .side-nav-btn {
        font-size: 1.5rem;
        padding: 1.5rem 0.8rem;
    }

    #prevBtnSide {
        left: 0.5rem;
    }

    #nextBtnSide {
        right: 0.5rem;
    }

    .image-placeholder {
        height: 180px;
    }

    .book {
        width: 95vw;
        height: 95vh;
    }
}

@media (max-width: 480px) {
    .cover-title {
        font-size: 2.5rem;
    }

    .click-to-open {
        font-size: 1.2rem;
        padding: 1rem 2rem;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    .player-controls-vhs {
        gap: 0.8rem;
    }

    .player-btn {
        padding: 0.6rem 1rem;
        font-size: 1rem;
    }

    .side-nav-btn {
        font-size: 1.2rem;
        padding: 1.2rem 0.6rem;
    }
}