/* ================================================
   GGIGGL.com - Isometric Scholarly Chaos
   Cool-gray palette with glitch accents
   ================================================ */

/* --- CSS Custom Properties --- */
:root {
    --parchment-fog: #e8e6e1;
    --slate-mist: #c8ced6;
    --graphite: #2c3038;
    --pewter: #6b7b8d;
    --signal-red: #e63946;
    --phosphor-cyan: #06d6a0;
    --archive-gold: #d4a843;
    --deep-ink: #1a1e26;
    --white-burn: #f8f9fa;

    --font-heading: 'Cormorant Garamond', 'Georgia', serif;
    --font-body: 'Lora', 'Georgia', serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
    --font-display: 'Playfair Display', 'Georgia', serif;

    --draw-timing: 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
    --spine-offset: 8vw;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
}

body {
    background-color: var(--parchment-fog);
    color: var(--graphite);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.1vw, 1.2rem);
    line-height: 1.8;
    letter-spacing: 0.005em;
    overflow-x: hidden;
    position: relative;
}

/* --- Scan-Line Overlay --- */
#scanline-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 1px,
        rgba(28, 30, 38, 0.03) 1px,
        rgba(28, 30, 38, 0.03) 2px
    );
}

/* --- Spine Line --- */
#spine-line {
    position: fixed;
    top: 0;
    left: var(--spine-offset);
    width: 2px;
    height: 100vh;
    background-color: var(--pewter);
    z-index: 50;
}

/* --- Spine Numbers --- */
.spine-number {
    position: absolute;
    left: calc(var(--spine-offset) - 18px);
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pewter);
    z-index: 51;
    writing-mode: horizontal-tb;
}

.spine-number span {
    display: inline-block;
    transition: transform 0.1s steps(1);
}

.spine-number.glitch-jitter span {
    animation: spineJitter 0.15s steps(1) 1;
}

@keyframes spineJitter {
    0% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    50% { transform: translateX(1px); }
    75% { transform: translateX(-1px); }
    100% { transform: translateX(0); }
}

/* --- Page Counter (Bottom Right) --- */
#page-counter {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    z-index: 80;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.counter-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--pewter);
    margin-bottom: 0.2rem;
}

.counter-number {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--graphite);
    line-height: 1;
    display: inline-block;
}

.counter-number.glitch-flash {
    animation: counterGlitch 0.05s steps(1) 1;
}

@keyframes counterGlitch {
    0% { transform: translateX(0); color: var(--graphite); }
    50% { transform: translateX(3px); color: var(--signal-red); }
    100% { transform: translateX(0); color: var(--graphite); }
}

.counter-underline {
    display: block;
    width: 0;
    height: 2px;
    background-color: var(--archive-gold);
    transition: width var(--draw-timing);
    margin-top: 0.3rem;
}

.counter-underline.drawn {
    width: 100%;
}

/* --- Table of Contents Overlay --- */
#toc-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 200;
    background-color: rgba(26, 30, 38, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#toc-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

.toc-inner {
    text-align: center;
}

.toc-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    font-weight: 600;
    color: var(--parchment-fog);
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
}

.toc-list {
    list-style: none;
}

.toc-list li {
    margin-bottom: 1.2rem;
}

.toc-num {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--archive-gold);
    margin-right: 1rem;
    vertical-align: middle;
}

.toc-link {
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    font-weight: 600;
    color: var(--parchment-fog);
    text-decoration: none;
    letter-spacing: -0.02em;
    position: relative;
    background-image: linear-gradient(var(--archive-gold), var(--archive-gold));
    background-size: 0% 2px;
    background-position: left bottom;
    background-repeat: no-repeat;
    transition: background-size var(--draw-timing);
    padding-bottom: 4px;
}

.toc-link:hover {
    background-size: 100% 2px;
    color: var(--phosphor-cyan);
}

/* --- Page Sections --- */
.page-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem calc(var(--spine-offset) + 3rem);
    overflow: hidden;
}

/* --- Page Depth Strip (isometric edge) --- */
.page-depth-strip {
    position: absolute;
    left: calc(var(--spine-offset) + 2px);
    top: 0;
    width: 5px;
    height: 100%;
    background-color: var(--slate-mist);
    transform: skewY(-0.5deg);
    z-index: 2;
}

/* --- Page Content --- */
.page-content {
    max-width: 68ch;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
    position: relative;
    z-index: 10;
}

/* --- Glitch Text Effect (RGB channel split on headings) --- */
.glitch-text {
    position: relative;
    display: inline-block;
}

.glitch-text::before,
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.glitch-text::before {
    color: var(--signal-red);
    left: -2px;
    clip-path: inset(0 0 100% 0);
    animation: glitchRedChannel 4s steps(1) infinite;
    animation-delay: 0.5s;
}

.glitch-text::after {
    color: var(--phosphor-cyan);
    left: 2px;
    clip-path: inset(0 0 100% 0);
    animation: glitchCyanChannel 4s steps(1) infinite;
    animation-delay: 0.7s;
}

@keyframes glitchRedChannel {
    0%, 79% { clip-path: inset(0 0 100% 0); }
    80% { clip-path: inset(10% 0 70% 0); }
    81% { clip-path: inset(40% 0 30% 0); }
    82% { clip-path: inset(60% 0 10% 0); }
    83% { clip-path: inset(20% 0 50% 0); }
    84%, 100% { clip-path: inset(0 0 100% 0); }
}

@keyframes glitchCyanChannel {
    0%, 81% { clip-path: inset(0 0 100% 0); }
    82% { clip-path: inset(50% 0 20% 0); }
    83% { clip-path: inset(15% 0 60% 0); }
    84% { clip-path: inset(70% 0 5% 0); }
    85% { clip-path: inset(30% 0 40% 0); }
    86%, 100% { clip-path: inset(0 0 100% 0); }
}

/* --- Hero Section --- */
#section-hero {
    flex-direction: column;
    text-align: center;
}

#section-hero .page-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 7vw, 6.5rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--deep-ink);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(10px);
    animation: letterEntrance 0.4s ease forwards;
    animation-delay: calc(var(--delay) * 120ms + 0.3s);
}

@keyframes letterEntrance {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    30% {
        opacity: 1;
        transform: translateY(0);
        background-color: var(--white-burn);
    }
    40% {
        background-color: transparent;
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        background-color: transparent;
    }
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.5vw, 1.3rem);
    font-style: italic;
    color: var(--pewter);
    line-height: 1.8;
    margin-bottom: 1rem;
    max-width: 40ch;
}

.hero-domain {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--pewter);
}

/* --- Section Headings --- */
.section-heading {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--graphite);
    margin-bottom: 2.5rem;
}

/* --- Body Text --- */
.body-text {
    margin-bottom: 1.8rem;
    color: var(--graphite);
}

.body-text em {
    font-style: italic;
}

/* --- Pull Quotes --- */
.pull-quote {
    margin: 3rem 0;
    padding: 2.5rem 2rem;
    background-color: var(--slate-mist);
    position: relative;
}

.pull-quote-text {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    font-weight: 600;
    font-style: italic;
    letter-spacing: -0.02em;
    color: var(--deep-ink);
    line-height: 1.5;
}

.pull-quote-text.playfair {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(1.6rem, 3.5vw, 2.8rem);
    letter-spacing: -0.04em;
    font-style: normal;
}

/* --- Isometric Card Shadow --- */
.isometric-card {
    position: relative;
    transition: transform 0.3s ease;
}

.isometric-card::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 4px;
    right: -4px;
    height: 6px;
    background-color: var(--slate-mist);
    transform: skewY(-2deg);
    filter: brightness(0.85);
    transition: height 0.3s ease, bottom 0.3s ease;
    z-index: -1;
}

.isometric-card:hover {
    transform: translateY(-4px);
}

.isometric-card:hover::after {
    height: 10px;
    bottom: -10px;
}

/* --- Marginalia --- */
.marginalia {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 18ch;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-style: italic;
    color: var(--pewter);
    line-height: 1.6;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.marginalia.visible {
    opacity: 1;
}

.marginalia-left {
    left: calc(var(--spine-offset) + 12px);
    transform: translateY(-50%) rotate(-0.5deg);
}

.marginalia-right {
    right: 3vw;
    transform: translateY(-50%) rotate(1deg);
}

.marginalia .pilcrow {
    font-family: var(--font-mono);
    font-style: normal;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--archive-gold);
    display: block;
    margin-bottom: 0.3rem;
}

.marginalia em {
    position: relative;
    display: inline;
    background-image: linear-gradient(var(--archive-gold), var(--archive-gold));
    background-size: 0% 1px;
    background-position: left bottom;
    background-repeat: no-repeat;
    transition: background-size var(--draw-timing);
    padding-bottom: 2px;
}

.marginalia.visible em {
    background-size: 100% 1px;
}

/* --- Section Dividers --- */
.section-divider {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    z-index: 10;
}

.divider-line {
    display: block;
    width: 0;
    height: 1px;
    background-color: var(--pewter);
    transition: width var(--draw-timing);
}

.section-divider.visible .divider-line {
    width: 60px;
}

.diamond-ornament {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 1px solid var(--archive-gold);
    transform: rotate(45deg) translate(20px, 20px);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
}

.section-divider.visible .diamond-ornament {
    transform: rotate(45deg) translate(0, 0);
    opacity: 1;
}

.section-divider.visible .diamond-ornament:nth-child(2) {
    transition-delay: 0.1s;
}

.section-divider.visible .diamond-ornament:nth-child(3) {
    transition-delay: 0.2s;
}

.section-divider.visible .diamond-ornament:nth-child(4) {
    transition-delay: 0.3s;
}

/* --- Isometric Book Constructions --- */
.isometric-book-construction {
    position: absolute;
    right: -8vw;
    top: 50%;
    transform: translateY(-50%) rotateX(30deg) rotateY(-45deg);
    transform-style: preserve-3d;
    z-index: 1;
    opacity: 0.7;
}

.iso-book {
    position: relative;
    width: 80px;
    height: 20px;
    margin-bottom: 4px;
    transform-style: preserve-3d;
}

.iso-top {
    position: absolute;
    width: 80px;
    height: 40px;
    background-color: var(--slate-mist);
    transform: rotateX(0deg) translateZ(10px);
    top: -10px;
}

.iso-left {
    position: absolute;
    width: 80px;
    height: 20px;
    background-color: var(--pewter);
    transform-origin: bottom left;
    transform: rotateX(0deg);
}

.iso-right {
    position: absolute;
    width: 40px;
    height: 20px;
    background-color: var(--graphite);
    right: -20px;
    transform-origin: bottom left;
    transform: skewY(-30deg);
}

.iso-book-2 { margin-left: 5px; }
.iso-book-3 { margin-left: -3px; }
.iso-book-4 { margin-left: 8px; }
.iso-book-5 { margin-left: 2px; }
.iso-book-6 { margin-left: -5px; }
.iso-book-7 { margin-left: 10px; }

.iso-construct-1 { opacity: 0; transition: opacity 0.8s ease; }
.iso-construct-2 { opacity: 0; transition: opacity 0.8s ease; }
.iso-construct-3 { opacity: 0; transition: opacity 0.8s ease; }

.iso-construct-1.visible,
.iso-construct-2.visible,
.iso-construct-3.visible {
    opacity: 0.7;
}

/* --- Footnote Markers --- */
.footnote-marker {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--phosphor-cyan);
    cursor: pointer;
    position: relative;
    vertical-align: super;
    line-height: 0;
    margin-left: 2px;
    transition: color 0.2s ease;
}

.footnote-marker:hover {
    color: var(--archive-gold);
}

/* --- Footnote Tooltip --- */
.footnote-tooltip {
    position: fixed;
    z-index: 150;
    background-color: var(--parchment-fog);
    border: 1px solid var(--pewter);
    padding: 0.8rem 1.2rem;
    max-width: 280px;
    pointer-events: none;
    opacity: 0;
    transform: translateX(4px);
    transition: opacity 0.1s steps(1), transform 0.1s steps(1);
}

.footnote-tooltip.visible {
    opacity: 1;
    transform: translateX(0);
}

.footnote-tooltip-text {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--graphite);
    letter-spacing: -0.02em;
}

/* --- Colophon Section --- */
#section-colophon {
    min-height: 100vh;
}

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

.colophon-details {
    margin-top: 3rem;
    border-top: 1px solid var(--pewter);
    padding-top: 2rem;
}

.colophon-item {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.8rem;
}

.colophon-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pewter);
    margin-bottom: 0.4rem;
}

.colophon-value {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--graphite);
    line-height: 1.6;
}

.colophon-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--pewter);
}

.colophon-mark .diamond-ornament {
    opacity: 1;
    transform: rotate(45deg);
    transition: none;
}

.colophon-domain {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--deep-ink);
    letter-spacing: -0.02em;
}

/* --- Glitch Flash Animation (micro-interaction) --- */
.glitch-micro {
    animation: glitchMicroFlash 0.05s steps(1) 1;
}

@keyframes glitchMicroFlash {
    0% { transform: translateX(0); }
    50% { transform: translateX(3px); filter: hue-rotate(90deg); }
    100% { transform: translateX(0); filter: none; }
}

/* --- Scroll Reveal for Body Text --- */
.body-text,
.pull-quote {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.body-text.revealed,
.pull-quote.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Section Heading Reveal --- */
.section-heading {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.section-heading.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive Adjustments --- */
@media (max-width: 900px) {
    :root {
        --spine-offset: 4vw;
    }

    .marginalia {
        position: relative;
        top: auto;
        right: auto;
        left: auto;
        transform: none;
        width: 100%;
        margin: 2rem 0;
        padding: 1rem;
        border-left: 2px solid var(--archive-gold);
    }

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

    .isometric-book-construction {
        display: none;
    }

    .page-section {
        padding: 4rem 2rem;
    }

    #page-counter {
        bottom: 1.5rem;
        right: 1.5rem;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: clamp(2rem, 12vw, 4rem);
    }

    .page-section {
        padding: 3rem 1.5rem;
    }

    .page-content {
        padding: 0 0.5rem;
    }

    .pull-quote {
        padding: 1.5rem 1rem;
    }

    .spine-number {
        display: none;
    }
}