/* ppzz.lu — The Forbidden Index */
/* Color Palette */
:root {
    --void: #0a0a0f;
    --cyan: #00f0ff;
    --magenta: #ff006e;
    --violet: #7b2ff7;
    --silver: #e0e0e8;
    --lavender: #b0b0c0;
    --cyan-glow: rgba(0, 240, 255, 0.3);
    --magenta-glow: rgba(255, 0, 110, 0.3);
    --violet-glow: rgba(123, 47, 247, 0.3);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--void);
    color: var(--silver);
    font-family: 'Commissioner', sans-serif;
    font-weight: 300;
    font-size: clamp(1rem, 1.4vw, 1.25rem);
    line-height: 1.75;
    overflow-x: hidden;
    perspective: 1000px;
}

/* ========================================
   LAYER 1: Ghost Grid (fixed background)
   ======================================== */
#ghost-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 64px 64px;
}

/* ========================================
   LAYER 3: Neon Annotations
   ======================================== */
#neon-annotations {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 50;
    pointer-events: none;
    overflow: hidden;
}

.margin-note {
    position: absolute;
    font-family: 'Commissioner', sans-serif;
    font-weight: 200;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--magenta);
    opacity: 0;
    filter: blur(0.5px);
    transition: opacity 0.8s ease;
    will-change: transform;
}

.margin-note.visible {
    opacity: 0.7;
}

.margin-note[data-drift='1'] { right: 8%; top: 15%; }
.margin-note[data-drift='2'] { right: 5%; top: 35%; }
.margin-note[data-drift='3'] { right: 12%; top: 55%; }
.margin-note[data-drift='4'] { right: 3%; top: 72%; }
.margin-note[data-drift='5'] { right: 10%; top: 88%; }
.margin-note[data-drift='6'] { right: 6%; top: 25%; }
.margin-note[data-drift='7'] { right: 15%; top: 48%; }
.margin-note[data-drift='8'] { right: 4%; top: 65%; }

/* ========================================
   Navigation Dots
   ======================================== */
#chapter-nav {
    position: fixed;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid var(--cyan);
    background: transparent;
    cursor: pointer;
    padding: 0;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.nav-dot.active {
    background-color: var(--cyan);
    box-shadow: 0 0 8px var(--cyan-glow);
}

.nav-dot:hover {
    background-color: var(--cyan);
    box-shadow: 0 0 12px var(--cyan-glow);
}

/* ========================================
   LAYER 2: Content Plane
   ======================================== */
#content-plane {
    position: relative;
    z-index: 30;
    transform: translateZ(30px);
}

/* ========================================
   Chapters
   ======================================== */
.chapter {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 38.2%;
    position: relative;
}

.chapter-inner {
    max-width: 520px;
    width: 100%;
}

/* ========================================
   Chapter 1: Prolegomenon
   ======================================== */
#chapter-1 {
    padding-left: 0;
    justify-content: center;
}

#chapter-1 .chapter-inner {
    padding-left: 38.2%;
    max-width: none;
}

.stagger-title {
    font-family: 'Commissioner', sans-serif;
    font-weight: 900;
    font-size: clamp(4rem, 10vw, 8rem);
    color: var(--cyan);
    letter-spacing: -0.04em;
    line-height: 1;
    text-shadow: 0 0 40px var(--cyan-glow);
    margin-bottom: 1.5rem;
}

.stagger-title .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px);
    animation: letterReveal 0.5s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
    animation-delay: calc(var(--delay) * 120ms + 0.5s);
}

@keyframes letterReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.annotation-text {
    font-family: 'Commissioner', sans-serif;
    font-weight: 200;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--magenta);
    opacity: 0;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid var(--magenta);
    width: 0;
    animation: typewriter 1.2s steps(22) 1.5s forwards, blinkCursor 0.6s step-end 1.5s 4;
}

@keyframes typewriter {
    to {
        width: 14em;
        opacity: 1;
    }
}

@keyframes blinkCursor {
    50% {
        border-color: transparent;
    }
}

.icon-container {
    margin-top: 4rem;
    opacity: 0;
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.8, 0.25, 1) 2.5s forwards;
}

.icon-container svg {
    overflow: visible;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* SVG Draw Animation */
.svg-draw {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
}

.icon-container .svg-draw {
    animation: drawPath 0.8s cubic-bezier(0.25, 0.8, 0.25, 1) 2.8s forwards;
}

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

/* ========================================
   Chapter Separators
   ======================================== */
.chapter-separator {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 48px 0;
}

.glowing-dots {
    display: flex;
    gap: 24px;
    align-items: center;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.glowing-dots.visible {
    opacity: 1;
}

.glow-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.glowing-dots.visible .glow-dot {
    opacity: 1;
    transform: scale(1);
}

.dot-outer-left, .dot-outer-right {
    background-color: var(--magenta);
    box-shadow: 0 0 6px var(--magenta-glow);
}

.dot-inner-left, .dot-inner-right {
    background-color: var(--cyan);
    box-shadow: 0 0 6px var(--cyan-glow);
}

.dot-center {
    background-color: var(--violet);
    box-shadow: 0 0 8px var(--violet-glow);
}

.glowing-dots.visible .dot-outer-left { transition-delay: 0ms; }
.glowing-dots.visible .dot-inner-left { transition-delay: 80ms; }
.glowing-dots.visible .dot-center { transition-delay: 160ms; }
.glowing-dots.visible .dot-inner-right { transition-delay: 240ms; }
.glowing-dots.visible .dot-outer-right { transition-delay: 320ms; }

/* ========================================
   Chapter 2: Entries
   ======================================== */
.entries-chapter {
    padding: 4rem 0;
}

.index-entry {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 48px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.25, 0.8, 0.25, 1),
                transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.index-entry.visible {
    opacity: 1;
    transform: translateY(0);
}

.index-entry:nth-child(1) { transition-delay: 0ms; }
.index-entry:nth-child(2) { transition-delay: 150ms; }
.index-entry:nth-child(3) { transition-delay: 300ms; }
.index-entry:nth-child(4) { transition-delay: 450ms; }
.index-entry:nth-child(5) { transition-delay: 600ms; }
.index-entry:nth-child(6) { transition-delay: 750ms; }

.entry-icon {
    position: absolute;
    left: 0;
    top: 4px;
}

.entry-icon .svg-draw {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    transition: stroke-dashoffset 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.index-entry.visible .entry-icon .svg-draw {
    stroke-dashoffset: 0;
}

.entry-heading {
    font-family: 'Commissioner', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: var(--silver);
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.entry-underline {
    width: 0;
    height: 2px;
    margin-bottom: 0.75rem;
    transition: width 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.index-entry.visible .entry-underline {
    width: 100%;
}

.index-entry:nth-child(odd) .entry-underline {
    background-color: var(--cyan);
    box-shadow: 0 0 4px var(--cyan-glow);
}

.index-entry:nth-child(even) .entry-underline {
    background-color: var(--magenta);
    box-shadow: 0 0 4px var(--magenta-glow);
}

.entry-body {
    font-family: 'Commissioner', sans-serif;
    font-weight: 300;
    font-size: clamp(1rem, 1.4vw, 1.25rem);
    line-height: 1.75;
    color: var(--silver);
}

.entry-margin-note {
    position: absolute;
    right: -180px;
    top: 0;
    font-family: 'Commissioner', sans-serif;
    font-weight: 200;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--magenta);
    opacity: 0;
    transition: opacity 0.6s ease 0.3s;
}

.index-entry.visible .entry-margin-note {
    opacity: 0.7;
}

/* ========================================
   Chapter 3: Marginalia (Icon Network)
   ======================================== */
.marginalia-chapter {
    max-width: none;
    width: 100%;
    height: 100vh;
    position: relative;
}

#chapter-3 {
    padding-left: 0;
    justify-content: center;
}

#icon-network {
    width: 100%;
    height: 100%;
}

.network-line {
    stroke: var(--violet);
    stroke-width: 1;
    opacity: 0.3;
    transition: opacity 0.4s ease;
}

.network-icon {
    cursor: pointer;
    opacity: 0;
    transform-origin: center;
    transition: opacity 0.6s ease;
}

.network-icon.visible {
    opacity: 1;
}

.network-icon:hover ~ .network-line,
.network-icon:hover .network-line {
    opacity: 0.8;
}

.icon-label {
    font-family: 'Commissioner', sans-serif;
    font-weight: 500;
    font-size: 10px;
    fill: var(--lavender);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.network-icon:hover .icon-label {
    opacity: 1;
}

.network-icon::after {
    content: '';
    display: block;
}

/* Icon hover underline effect */
.network-icon-underline {
    stroke-width: 2;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.network-icon:hover .network-icon-underline {
    opacity: 1;
}

/* ========================================
   Chapter 4: Colophon
   ======================================== */
#chapter-4 {
    padding-left: 0;
    justify-content: center;
}

.colophon-chapter {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.colophon-block {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}

.colophon-block.visible {
    opacity: 1;
    transform: translateY(0);
}

.colophon-text {
    font-family: 'Commissioner', sans-serif;
    font-weight: 300;
    font-size: 1rem;
    line-height: 2;
    color: var(--silver);
}

.colophon-separator {
    margin: 3rem 0;
}

.end-title {
    font-family: 'Commissioner', sans-serif;
    font-weight: 900;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--magenta);
    text-shadow: 0 0 40px var(--magenta-glow);
    opacity: 0;
    transition: opacity 2s ease;
}

.end-title.visible {
    opacity: 1;
}

/* ========================================
   Hover States & Interactions
   ======================================== */
.entry-heading {
    position: relative;
    display: inline-block;
}

.entry-heading::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--cyan);
    transition: width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.index-entry:nth-child(even) .entry-heading::after {
    background-color: var(--magenta);
}

.index-entry:hover .entry-heading::after {
    width: 100%;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 900px) {
    .chapter {
        padding-left: 10%;
        padding-right: 10%;
    }

    #chapter-1 .chapter-inner {
        padding-left: 10%;
    }

    .entry-margin-note {
        display: none;
    }

    #chapter-nav {
        right: 12px;
    }

    .stagger-title {
        font-size: clamp(3rem, 12vw, 6rem);
    }

    .marginalia-chapter {
        padding: 2rem;
    }
}

@media (max-width: 600px) {
    .chapter {
        padding-left: 5%;
        padding-right: 5%;
    }

    #chapter-1 .chapter-inner {
        padding-left: 5%;
    }

    .entry-heading {
        font-size: 1.5rem;
    }

    .stagger-title {
        font-size: clamp(2.5rem, 14vw, 5rem);
    }
}

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--void);
}

::-webkit-scrollbar-thumb {
    background: var(--violet);
    border-radius: 2px;
}

/* ========================================
   Selection
   ======================================== */
::selection {
    background-color: var(--magenta);
    color: var(--void);
}