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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
}

body {
    background: #ffffff;
    font-family: 'Noto Serif SC', serif;
    overflow-x: hidden;
}

/* ===== Section 1: Hero ===== */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    scroll-snap-align: start;
}

/* CD Player - Turntable (reference: top-down view, wooden case, simple elegant) */
.cd-player {
    position: relative;
    width: 420px;
    height: 420px;
    margin: 0 auto 60px;
    cursor: pointer;
}

.turntable-base {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background: #f8f4ef;
    box-shadow:
        0 20px 60px rgba(0,0,0,0.1),
        0 4px 12px rgba(0,0,0,0.05),
        inset 0 1px 0 rgba(255,255,255,0.8);
    border: 1px solid #e0dbd5;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cd-disc {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background:
        radial-gradient(circle,
            #333 0%, #222 6%,
            #1a1a1a 7%, #111 10%,
            #1c1c1c 11%, #0f0f0f 18%,
            #1a1a1a 19%, #0d0d0d 28%,
            #1a1a1a 29%, #111 38%,
            #1a1a1a 39%, #0d0d0d 50%,
            #1a1a1a 51%, #111 62%,
            #1a1a1a 63%, #0d0d0d 75%,
            #1a1a1a 76%, #111 88%,
            #222 89%, #2a2a2a 100%
        );
    box-shadow:
        0 2px 20px rgba(0,0,0,0.3),
        inset 0 0 40px rgba(0,0,0,0.2);
    position: relative;
}

.cd-disc.spinning {
    animation: spin 16s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Vinyl grooves */
.cd-groove {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.04);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 75%;
    height: 75%;
}

.cd-groove-2 {
    width: 55%;
    height: 55%;
    border-color: rgba(255,255,255,0.05);
}

.cd-groove-3 {
    width: 90%;
    height: 90%;
    border-color: rgba(255,255,255,0.03);
}

/* Vinyl light reflection */
.cd-disc::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(135deg,
        transparent 35%,
        rgba(255,255,255,0.06) 48%,
        transparent 52%
    );
    pointer-events: none;
}

.cd-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f0ede8, #e5e0d8);
    border: 1px solid #d5d0c8;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cd-label-text {
    color: #555;
    font-size: 11px;
    letter-spacing: 2px;
    font-weight: 700;
}

.cd-hole {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f8f4ef;
    border: 2px solid #ccc;
    z-index: 2;
}

/* Tonearm */
.cd-arm {
    position: absolute;
    top: 30px;
    right: 50px;
    width: 3px;
    height: 140px;
    background: linear-gradient(180deg, #aaa, #888);
    border-radius: 2px;
    transform-origin: top center;
    transform: rotate(-35deg);
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 5;
}

.cd-arm::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #999;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.cd-arm::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 10px;
    background: #777;
    border-radius: 0 0 2px 2px;
}

.cd-arm.playing {
    transform: rotate(-5deg);
}

.cd-status {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    color: #aaa;
    font-size: 11px;
    letter-spacing: 3px;
    white-space: nowrap;
    transition: color 0.3s;
}

.cd-player:hover .cd-status {
    color: #666;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 10vw;
}

.typewriter {
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    color: #222;
    letter-spacing: 0.15em;
    line-height: 2;
    min-height: 3em;
    margin-top: 60px;
}

.typewriter .cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: #222;
    margin-left: 4px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(0,0,0,0.25);
    font-size: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Section 2: Constellation Globe ===== */
.magazine-section {
    width: 100%;
    height: 160vh;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    scroll-snap-align: start;
    position: relative;
    margin-top: 10vh;
    margin-bottom: 0;
    padding-bottom: 25vh;
}

#globe-canvas {
    width: 100%;
    height: 100%;
    background: #ffffff;
}

.globe-info {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    pointer-events: none;
    z-index: 10;
}

.globe-hint {
    font-size: 0.8rem;
    color: #aaa;
    letter-spacing: 0.3em;
}

.globe-detail {
    margin-top: 12px;
    font-size: 1.1rem;
    color: #333;
    letter-spacing: 0.1em;
}

.globe-detail .constellation-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: #111;
    margin-bottom: 6px;
    letter-spacing: 0.15em;
}


/* ===== Section 3: 3D Carousel ===== */
.books3d-section {
    width: 100%;
    height: 100vh;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    scroll-snap-align: start;
    margin-top: -120px;
    overflow: hidden;
    position: relative;
}

.books3d-scene {
    width: 100%;
    height: 70vh;
    position: relative;
    perspective: 1200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.book3d-card {
    position: absolute;
    width: 700px;
    max-width: 85vw;
    height: 400px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    background: #fff;
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 20px 80px rgba(0,0,0,0.08);
    opacity: 0;
    transform: rotateY(60deg) translateZ(-300px) scale(0.7);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.book3d-card.active {
    opacity: 1;
    transform: rotateY(0deg) translateZ(0) scale(1);
    pointer-events: all;
    z-index: 5;
}

.book3d-card.prev {
    opacity: 0.4;
    transform: rotateY(35deg) translateX(-60%) translateZ(-200px) scale(0.8);
}

.book3d-card.next {
    opacity: 0.4;
    transform: rotateY(-35deg) translateX(60%) translateZ(-200px) scale(0.8);
}

.book3d-img {
    width: 100%;
    height: 300px;
    overflow: hidden;
    border-radius: 4px;
}

.book3d-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(80%) contrast(1.05);
}

.book3d-text {
    padding: 10px 0;
}

.book3d-text h3 {
    font-size: 1.8rem;
    color: #111;
    margin-bottom: 8px;
    letter-spacing: 0.1em;
}

.book3d-author {
    font-size: 0.8rem;
    color: #999;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.book3d-excerpt {
    font-size: 0.9rem;
    color: #444;
    line-height: 1.9;
    overflow: hidden;
    max-height: 260px;
}

.books3d-nav {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 24px;
}

.books3d-btn {
    background: none;
    border: 1px solid #ccc;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    color: #333;
    transition: all 0.2s;
}

.books3d-btn:hover {
    background: #111;
    color: #fff;
    border-color: #111;
}

.books3d-counter {
    font-size: 0.85rem;
    color: #999;
    letter-spacing: 0.2em;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .book3d-card {
        grid-template-columns: 1fr;
        height: auto;
        padding: 20px;
        gap: 20px;
    }

    .book3d-img {
        height: 180px;
    }

    .book3d-card.prev,
    .book3d-card.next {
        opacity: 0;
    }

    .cd-player {
        width: 300px;
        height: 300px;
    }

    .cd-disc {
        width: 220px;
        height: 220px;
    }
}