:root {
    --enchanted-plum: #5a3e7c;
    --petal-pink: #f8e8ee;
    --grimoire-cream: #fdf6ec;
    --lavender-mist: #e8daf0;
    --mint-charm: #d4f0e0;
    --sticky-yellow: #ffeaa7;
    --deep-grimoire: #3d3548;
    --star-gold: #e8b84b;
    --muted-purple: #7a6b8a;
}

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

body {
    font-family: 'Nunito', sans-serif;
    background: var(--grimoire-cream);
    color: var(--deep-grimoire);
    overflow-x: hidden;
    position: relative;
}

/* Star Field */
.star-field {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.star {
    position: absolute;
    color: var(--star-gold);
    font-size: 12px;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.2); }
}

/* Chapter Navigation */
.chapter-nav {
    position: fixed;
    top: 50%;
    right: 1.5rem;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chapter-pill {
    display: block;
    padding: 0.4rem 0.8rem;
    background: var(--lavender-mist);
    border-radius: 20px;
    font-family: 'Nunito', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--enchanted-plum);
    text-decoration: none;
    text-align: center;
    transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 8px rgba(90, 62, 124, 0.1);
}

.chapter-pill:hover {
    transform: scale(1.05);
    background: var(--enchanted-plum);
    color: var(--grimoire-cream);
}

.chapter-pill.active {
    background: var(--enchanted-plum);
    color: var(--grimoire-cream);
}

/* Grimoire Layout */
.grimoire {
    position: relative;
    z-index: 1;
}

.page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
}

.page-paper {
    background: var(--grimoire-cream);
    max-width: 650px;
    width: 100%;
    padding: clamp(2rem, 5vw, 4rem);
    position: relative;
    box-shadow: 4px 6px 20px rgba(61, 53, 72, 0.12), 0 1px 3px rgba(61, 53, 72, 0.08);
    border: 1px solid var(--lavender-mist);
}

.tilted-right {
    transform: rotate(0.8deg);
}

.tilted-left {
    transform: rotate(-0.5deg);
}

/* Cover */
.cover-page .page-paper {
    text-align: center;
    background: linear-gradient(135deg, var(--grimoire-cream) 0%, var(--petal-pink) 50%, var(--lavender-mist) 100%);
    border: 2px solid var(--lavender-mist);
}

.cover-decoration {
    margin-bottom: 1rem;
}

.crystal-top {
    width: 80px;
    height: 80px;
    animation: floatCrystal 6s ease-in-out infinite;
}

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

.grimoire-title {
    font-family: 'Caveat', cursive;
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    font-weight: 700;
    color: var(--enchanted-plum);
    letter-spacing: 0.02em;
    line-height: 1.1;
}

.grimoire-subtitle {
    font-family: 'Nunito', sans-serif;
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--muted-purple);
    margin-top: 0.5rem;
}

.cover-divider {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.star-icon {
    color: var(--star-gold);
    font-size: 1rem;
    opacity: 0.7;
}

.cover-tagline {
    font-family: 'Nunito', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--deep-grimoire);
    font-style: italic;
    max-width: 350px;
    margin: 0 auto;
    line-height: 1.6;
}

.doujin-mark {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.circle-mark {
    font-family: 'Caveat', cursive;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--enchanted-plum);
    width: 60px;
    height: 60px;
    border: 2px solid var(--enchanted-plum);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
}

.circle-year {
    font-family: 'Fira Code', monospace;
    font-size: 0.65rem;
    color: var(--muted-purple);
    letter-spacing: 0.1em;
}

/* Chapter Titles */
.chapter-title {
    font-family: 'Caveat', cursive;
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 700;
    color: var(--enchanted-plum);
}

.chapter-underline {
    width: 60px;
    height: 2px;
    background: var(--star-gold);
    margin: 0.5rem 0 1.5rem;
    opacity: 0.6;
}

/* Body Text */
.body-text {
    font-family: 'Nunito', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    line-height: 1.75;
    color: var(--deep-grimoire);
    margin-bottom: 1rem;
}

/* Sticky Notes */
.sticky-note {
    position: absolute;
    padding: 0.6rem 1rem;
    transform: rotate(-3deg);
    box-shadow: 2px 3px 8px rgba(61, 53, 72, 0.1);
    z-index: 5;
}

.note-yellow {
    background: var(--sticky-yellow);
    top: -15px;
    right: 20px;
}

.note-pink {
    background: var(--petal-pink);
    bottom: -10px;
    left: 20px;
    transform: rotate(2deg);
}

.note-text {
    font-family: 'Caveat', cursive;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--deep-grimoire);
}

/* Theory Card */
.theory-card {
    background: var(--lavender-mist);
    border-left: 3px solid var(--enchanted-plum);
    padding: 1.2rem 1.5rem;
    margin: 1.5rem 0;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.card-icon {
    color: var(--star-gold);
    font-size: 1rem;
}

.card-label {
    font-family: 'Nunito', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--enchanted-plum);
}

.card-text {
    font-family: 'Nunito', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    font-style: italic;
    color: var(--deep-grimoire);
    line-height: 1.6;
}

/* Margin Note */
.margin-note {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.margin-arrow {
    color: var(--muted-purple);
    font-size: 0.8rem;
}

.margin-text {
    font-family: 'Fira Code', monospace;
    font-size: 0.65rem;
    color: var(--muted-purple);
    letter-spacing: 0.05em;
}

/* Framework Grid */
.framework-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 1rem 0;
}

.framework-item {
    text-align: center;
    padding: 1rem;
    border: 1px dashed var(--lavender-mist);
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.framework-item:hover {
    border-color: var(--enchanted-plum);
    transform: translateY(-3px);
}

.crystal-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 0.75rem;
}

.crystal-icon svg {
    width: 100%;
    height: 100%;
}

.item-title {
    font-family: 'Caveat', cursive;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--enchanted-plum);
    margin-bottom: 0.3rem;
}

.item-desc {
    font-family: 'Nunito', sans-serif;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--muted-purple);
    line-height: 1.5;
}

/* Moe Quote */
.moe-quote {
    background: var(--petal-pink);
    padding: 1.5rem 2rem;
    margin: 1.5rem 0;
    position: relative;
    border-radius: 4px;
}

.quote-marks {
    font-family: 'Caveat', cursive;
    font-size: 3rem;
    color: var(--enchanted-plum);
    opacity: 0.3;
    line-height: 0.5;
}

.quote-text {
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    font-style: italic;
    color: var(--deep-grimoire);
    line-height: 1.6;
    margin: 0.5rem 0;
}

.quote-attr {
    font-family: 'Fira Code', monospace;
    font-size: 0.65rem;
    color: var(--muted-purple);
}

/* Sparkle Row */
.sparkle-row {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.sparkle {
    color: var(--star-gold);
    font-size: 1.2rem;
    animation: twinkle 2s ease-in-out infinite;
}

.sparkle:nth-child(2) { animation-delay: 0.4s; }
.sparkle:nth-child(3) { animation-delay: 0.8s; }
.sparkle:nth-child(4) { animation-delay: 1.2s; }
.sparkle:nth-child(5) { animation-delay: 1.6s; }

/* Colophon */
.colophon-page .page-paper {
    text-align: center;
    background: linear-gradient(180deg, var(--grimoire-cream), var(--mint-charm));
}

.colophon-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.colophon-content .chapter-underline {
    margin: 0.5rem auto 1.5rem;
}

.colophon-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.info-row {
    display: flex;
    gap: 1.5rem;
    align-items: baseline;
}

.info-label {
    font-family: 'Fira Code', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted-purple);
    min-width: 80px;
    text-align: right;
}

.info-value {
    font-family: 'Nunito', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--deep-grimoire);
}

.colophon-mark {
    margin-top: 1rem;
}

/* Reveal Animation */
.page-paper > *:not(.sticky-note) {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.page.visible .page-paper > *:not(.sticky-note) {
    opacity: 1;
    transform: translateY(0);
}

.page.visible .page-paper > *:nth-child(1) { transition-delay: 0s; }
.page.visible .page-paper > *:nth-child(2) { transition-delay: 0.1s; }
.page.visible .page-paper > *:nth-child(3) { transition-delay: 0.15s; }
.page.visible .page-paper > *:nth-child(4) { transition-delay: 0.2s; }
.page.visible .page-paper > *:nth-child(5) { transition-delay: 0.25s; }
.page.visible .page-paper > *:nth-child(6) { transition-delay: 0.3s; }
.page.visible .page-paper > *:nth-child(7) { transition-delay: 0.35s; }
.page.visible .page-paper > *:nth-child(8) { transition-delay: 0.4s; }

/* Sticky notes always visible once page visible */
.page.visible .sticky-note {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .chapter-nav {
        top: auto;
        bottom: 1rem;
        right: 50%;
        transform: translateX(50%);
        flex-direction: row;
    }

    .page-paper {
        padding: 2rem 1.5rem;
    }

    .tilted-right,
    .tilted-left {
        transform: none;
    }

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

    .sticky-note {
        position: relative;
        top: auto;
        right: auto;
        bottom: auto;
        left: auto;
        display: inline-block;
        margin-bottom: 0.5rem;
    }
}