/* ============================================================
   sim-ai.com — A Living Codex of Simulation Intelligence
   Aesthetic: blobitecture + scholarly codex + aurora gradient
   ============================================================ */

@property --aurora-rotation {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

@property --aurora-hue {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

/* ---------- Color tokens ---------- */
:root {
    --c-codex-ink:        #1B1422;
    --c-twilight-plum:    #2D1F3A;
    --c-cordovan:         #5E4B3B;
    --c-burnished:        #8B6F47;
    --c-aurora-teal:      #00C9A7;
    --c-aurora-violet:    #7B5EA7;
    --c-aurora-rose:      #E85D8A;
    --c-aurora-gold:      #F4B942;
    --c-vellum:           #F2E8D9;
    --c-parchment:        #D4C5B2;
    --c-burnt-sienna:     #3D2E1F;

    --aurora-grad: linear-gradient(135deg, #7B5EA7 0%, #E85D8A 40%, #F4B942 70%, #00C9A7 100%);
    --aurora-grad-soft: linear-gradient(135deg, rgba(123,94,167,0.85) 0%, rgba(232,93,138,0.85) 40%, rgba(244,185,66,0.85) 70%, rgba(0,201,167,0.85) 100%);

    --leather-light:
        radial-gradient(ellipse at 20% 50%, rgba(94,75,59,0.10) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(94,75,59,0.08) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 80%, rgba(139,111,71,0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 30% 30%, rgba(139,111,71,0.04) 0%, transparent 35%),
        radial-gradient(ellipse at 70% 70%, rgba(94,75,59,0.05) 0%, transparent 55%);

    --leather-dark:
        radial-gradient(ellipse at 20% 50%, rgba(123,94,167,0.10) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(232,93,138,0.06) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 80%, rgba(0,201,167,0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 30% 30%, rgba(94,75,59,0.18) 0%, transparent 40%),
        radial-gradient(ellipse at 70% 70%, rgba(45,31,58,0.6) 0%, transparent 50%);
}

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

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

body {
    font-family: 'EB Garamond', 'Cormorant Garamond', Georgia, serif;
    color: var(--c-burnt-sienna);
    background: var(--c-codex-ink);
    overflow: hidden;
    font-feature-settings: 'onum' 1, 'liga' 1, 'kern' 1;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------- Custom scrollbar ---------- */
.codex::-webkit-scrollbar {
    width: 8px;
}
.codex::-webkit-scrollbar-track {
    background: var(--c-twilight-plum);
}
.codex::-webkit-scrollbar-thumb {
    background: var(--c-cordovan);
    border-radius: 4px;
}
.codex::-webkit-scrollbar-thumb:hover {
    background: var(--c-burnished);
}

/* ---------- Codex container ---------- */
.codex {
    height: 100vh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    scrollbar-width: thin;
    scrollbar-color: var(--c-cordovan) var(--c-twilight-plum);
}

/* ---------- Spread base ---------- */
.spread {
    height: 100vh;
    width: 100vw;
    scroll-snap-align: start;
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    gap: 0 2.4rem;
    padding: 4vh 3vw 6rem 3vw;
    position: relative;
    overflow: hidden;
}

.page {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2vh 1.5vw;
    z-index: 1;
}

.page--left {
    grid-column: 1 / span 7;
}

.page--right {
    grid-column: 9 / span 8;
}

.page--vellum {
    color: var(--c-burnt-sienna);
}

.page--ink {
    color: var(--c-vellum);
}

/* ---------- Spine ---------- */
.spine {
    grid-column: 8 / span 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.spine-rule {
    position: absolute;
    top: 8%;
    bottom: 8%;
    left: 50%;
    width: 1px;
    background: var(--c-cordovan);
    opacity: 0.25;
    transform: translateX(-50%);
}

.spine-glyph {
    position: relative;
    z-index: 1;
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-style: italic;
    font-weight: 400;
    color: var(--c-burnished);
    font-size: 1.4rem;
    background: inherit;
    padding: 0.4rem 0;
    transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}

.spine-glyph:hover {
    transform: rotate(15deg) scale(1.2);
    color: var(--c-aurora-teal);
}

/* ---------- Spread backgrounds ---------- */
.spread--frontispiece {
    background-color: var(--c-codex-ink);
    background-image: var(--leather-dark);
    color: var(--c-vellum);
}

.spread--thesis {
    background-color: var(--c-vellum);
    background-image: var(--leather-light);
    color: var(--c-burnt-sienna);
}

.spread--plate {
    background-color: var(--c-twilight-plum);
    background-image: var(--leather-dark);
    color: var(--c-vellum);
}

.spread--marginalia {
    background-color: var(--c-vellum);
    background-image: var(--leather-light);
    color: var(--c-burnt-sienna);
    grid-template-columns: repeat(16, 1fr);
}

.spread--colophon {
    background-color: var(--c-codex-ink);
    background-image: var(--leather-dark);
    color: var(--c-vellum);
}

/* ---------- Frontispiece spread ---------- */
.frontispiece-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 1rem;
    color: var(--c-parchment);
    letter-spacing: 0.16em;
    text-transform: lowercase;
    margin-bottom: 2.4rem;
    opacity: 0;
    transform: translateY(8px);
    animation: fadeReveal 1.2s 0.2s ease-out forwards;
}

.meta-glyph {
    color: var(--c-aurora-teal);
    font-size: 1.4rem;
}

.frontispiece-title {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(2.5rem, 8vw, 7rem);
    line-height: 0.95;
    letter-spacing: 0.04em;
    color: var(--c-vellum);
    margin-bottom: 1.6rem;
}

.title-line {
    display: block;
}

.title-line--top {
    font-weight: 300;
    letter-spacing: 0.12em;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeReveal 1.4s 0.5s ease-out forwards;
}

.title-line--em {
    font-weight: 300;
    font-style: italic;
    letter-spacing: 0.04em;
    background: var(--aurora-grad);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: hue-rotate(var(--aurora-hue));
    animation: fadeReveal 1.4s 0.85s ease-out forwards, gradientShimmer 4s 2s ease-in-out infinite;
    opacity: 0;
    transform: translateY(20px);
}

.title-line--em em {
    font-style: italic;
}

.amp {
    font-style: italic;
    color: var(--c-aurora-teal);
    -webkit-text-fill-color: var(--c-aurora-teal);
}

.frontispiece-subtitle {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: clamp(1.1rem, 1.6vw, 1.5rem);
    color: var(--c-parchment);
    letter-spacing: 0.04em;
    line-height: 1.5;
    max-width: 32rem;
    margin-bottom: 2.4rem;
    opacity: 0;
    transform: translateY(10px);
    animation: fadeReveal 1.2s 1.2s ease-out forwards;
}

.frontispiece-rule {
    position: relative;
    width: 220px;
    height: 14px;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeReveal 1.2s 1.4s ease-out forwards;
}

.frontispiece-rule svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.frontispiece-rule path {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: pathDraw 1.8s 1.6s ease-out forwards;
}

.rule-fleuron {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--c-aurora-teal);
    border-radius: 50% 30% 60% 40%;
    box-shadow: 0 0 12px rgba(0,201,167,0.6);
    opacity: 0;
    animation: fadeReveal 0.6s 2.4s ease-out forwards;
}

.frontispiece-byline {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-weight: 400;
    color: var(--c-parchment);
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 28rem;
    margin-bottom: 2.4rem;
    opacity: 0;
    animation: fadeReveal 1.2s 1.8s ease-out forwards;
}

.numeral {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    color: var(--c-aurora-teal);
    font-size: 1.2em;
}

.frontispiece-folio {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    color: var(--c-burnished);
    font-size: 0.95rem;
    letter-spacing: 0.2em;
    opacity: 0;
    animation: fadeReveal 1.2s 2s ease-out forwards;
}

.folio-sep {
    margin: 0 0.6rem;
    color: var(--c-cordovan);
}

/* ---------- Blob stages ---------- */
.blob-stage {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
    z-index: 3;
}

.blob {
    position: absolute;
    width: 90%;
    height: 90%;
    overflow: visible;
    will-change: transform, filter;
    filter: drop-shadow(0 12px 40px rgba(27,20,34,0.45)) hue-rotate(var(--aurora-rotation));
    animation: blobBreathe 10s ease-in-out infinite, auroraRotate 20s linear infinite;
    transform-origin: center center;
}

.blob--cognitor {
    width: 95%;
    height: 95%;
    animation-duration: 12s, 20s;
}

.blob--synapse {
    width: 88%;
    height: 88%;
    animation-duration: 9s, 22s;
}

.blob-path {
    transition: d 4s ease-in-out;
    will-change: d;
}

.blob-fold {
    opacity: 0.6;
    mix-blend-mode: multiply;
}

.blob-tendril {
    stroke-dasharray: 240;
    stroke-dashoffset: 240;
    animation: pathDraw 3s 0.6s ease-out forwards, tendrilFlow 8s 3.6s ease-in-out infinite;
}

.blob-glint {
    animation: glintPulse 4s ease-in-out infinite;
}

.blob-label {
    position: absolute;
    bottom: 1rem;
    right: 1.5rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--c-parchment);
    letter-spacing: 0.06em;
    z-index: 5;
    opacity: 0.75;
}

.spread--thesis .blob-label {
    color: var(--c-cordovan);
}

/* ---------- Plate spread layered blobs ---------- */
.blob-stage--plate .blob {
    position: absolute;
    transform-origin: center;
}

.blob-layer--1 {
    z-index: 1;
    width: 90%;
    height: 60%;
    top: 30%;
    filter: drop-shadow(0 18px 40px rgba(0,201,167,0.3)) blur(1.5px);
    opacity: 0.85;
}

.blob-layer--3 {
    z-index: 3;
    width: 80%;
    height: 80%;
    top: 5%;
    left: -5%;
    filter: drop-shadow(0 14px 36px rgba(123,94,167,0.45)) blur(0.8px);
    opacity: 0.9;
}

.blob-layer--5 {
    z-index: 5;
    width: 70%;
    height: 70%;
    top: 12%;
    left: 18%;
    filter: drop-shadow(0 10px 30px rgba(232,93,138,0.5));
}

.blob-layer--7 {
    z-index: 7;
    width: 38%;
    height: 38%;
    top: 32%;
    left: 32%;
    filter: drop-shadow(0 16px 38px rgba(244,185,66,0.55));
}

/* ---------- Thesis spread ---------- */
.folio-marker {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.9rem;
    color: var(--c-burnished);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 1.8rem;
    opacity: 0.8;
}

.spread-heading {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    color: inherit;
    margin-bottom: 2rem;
    line-height: 1.05;
}

.heading-supra {
    display: block;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--c-aurora-teal);
    letter-spacing: 0.32em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.heading-main {
    display: block;
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: clamp(1.6rem, 3.5vw, 2.8rem);
    letter-spacing: 0.04em;
    line-height: 1.08;
}

.heading-main em {
    font-style: italic;
    font-weight: 400;
    background: var(--aurora-grad);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: hue-rotate(var(--aurora-hue));
}

.spread-heading--center {
    text-align: center;
}

.thesis-body p,
.colophon-text,
.palimpsest-body p,
.plate-caption {
    font-family: 'EB Garamond', serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.15vw, 1.18rem);
    line-height: 1.78;
    text-align: justify;
    hyphens: auto;
    margin-bottom: 1.1rem;
    font-feature-settings: 'onum' 1, 'liga' 1, 'kern' 1;
}

.thesis-body p + p:not(.drop-cap-paragraph) {
    text-indent: 1.5em;
}

.palimpsest-body p + p:not(.drop-cap-paragraph) {
    text-indent: 1.5em;
}

.thesis-body em,
.palimpsest-body em,
.colophon-text em,
.plate-caption em {
    font-style: italic;
}

/* Illuminated drop cap */
.illuminated {
    float: left;
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: 4.5em;
    line-height: 0.85;
    padding: 0.05em 0.12em 0 0;
    margin-right: 0.05em;
    background: var(--aurora-grad);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: hue-rotate(var(--aurora-hue));
    animation: gradientShimmer 2.6s ease-in-out infinite;
    border: 1px solid rgba(139,111,71,0.45);
    border-radius: 50% 30% 60% 40%;
    padding: 0.05em 0.18em 0.08em 0.14em;
    margin-right: 0.18em;
    margin-top: 0.05em;
    box-shadow: 0 4px 12px rgba(27,20,34,0.08);
}

.illuminated--small {
    font-size: 2.6em;
    border-radius: 60% 40% 50% 30%;
}

/* Marginalia */
.marginalia {
    position: absolute;
    width: 11rem;
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-weight: 400;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--c-cordovan);
    z-index: 2;
}

.marginalia p {
    margin: 0;
}

.marginalia--right {
    right: -10rem;
    top: 30%;
}

.marginalia--right.offset-low {
    top: 60%;
}

.margin-mark {
    display: block;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    color: var(--c-aurora-teal);
    font-size: 1.4rem;
    margin-bottom: 0.2rem;
    line-height: 1;
    transition: transform 200ms ease-out;
    cursor: default;
}

.marginalia:hover .margin-mark,
.margin-block:hover .margin-mark {
    transform: scale(1.15);
}

.thesis-pullquote {
    position: absolute;
    bottom: 6%;
    left: 4%;
    right: 4%;
    padding: 1.6rem 2rem 1.6rem 3rem;
    border-left: 1px solid rgba(139,111,71,0.6);
    border-radius: 50% 30% 60% 40% / 30% 50% 30% 50%;
    background: rgba(242,232,217,0.65);
    backdrop-filter: blur(6px) saturate(1.2);
    -webkit-backdrop-filter: blur(6px) saturate(1.2);
    color: var(--c-burnt-sienna);
    z-index: 4;
    box-shadow: 0 8px 28px rgba(94,75,59,0.18);
}

.thesis-pullquote p {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 1.4rem;
    line-height: 1.4;
    color: var(--c-codex-ink);
}

.thesis-pullquote em {
    font-style: italic;
    color: var(--c-aurora-rose);
}

.quote-mark {
    position: absolute;
    top: 0.4rem;
    left: 0.8rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 3.6rem;
    color: var(--c-aurora-violet);
    line-height: 1;
    opacity: 0.75;
}

.quote-attr {
    display: block;
    margin-top: 0.6rem;
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-size: 0.85rem;
    color: var(--c-cordovan);
    letter-spacing: 0.08em;
}

/* ---------- Plate spread ---------- */
.plate-caption {
    color: var(--c-burnt-sienna);
}

.plate-caption--small {
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--c-cordovan);
}

.plate-legend {
    list-style: none;
    margin-top: 1.6rem;
    padding: 1rem 1.2rem;
    border: 1px solid rgba(139,111,71,0.4);
    border-radius: 50% 30% 60% 40% / 30% 50% 30% 50%;
    background: rgba(242,232,217,0.5);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    box-shadow: 0 6px 20px rgba(94,75,59,0.1);
    font-family: 'EB Garamond', serif;
    font-size: 0.95rem;
    color: var(--c-cordovan);
}

.plate-legend li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.25rem 0.4rem;
    font-style: italic;
}

.legend-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50% 30% 60% 40%;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(27,20,34,0.18);
}

.plate-frame {
    position: absolute;
    inset: 1.5rem;
    border: 1px solid rgba(139,111,71,0.25);
    border-radius: 50% 30% 60% 40% / 40% 50% 30% 50%;
    pointer-events: none;
    z-index: 0;
}

/* ---------- Marginalia spread ---------- */
.spread--marginalia {
    grid-template-columns: 3fr 10fr 3fr;
    gap: 0 1.6rem;
    padding: 4vh 4vw 6rem 4vw;
}

.margin-column {
    grid-column: span 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.4rem;
    padding: 2rem 0.8rem;
}

.margin-column--left {
    grid-column: 1 / 2;
    align-items: flex-end;
    text-align: right;
    border-right: 1px solid rgba(94,75,59,0.18);
}

.margin-column--right {
    grid-column: 3 / 4;
    align-items: flex-start;
    text-align: left;
    border-left: 1px solid rgba(94,75,59,0.18);
}

.margin-block {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-weight: 400;
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--c-cordovan);
    max-width: 14rem;
    opacity: 0;
    transform: translateY(10px);
    transition: transform 200ms ease-out, opacity 200ms ease-out;
}

.spread--marginalia.is-active .margin-block {
    opacity: 1;
    transform: translateY(0);
}

.spread--marginalia.is-active .margin-block:nth-child(1) { transition-delay: 0.2s; }
.spread--marginalia.is-active .margin-block:nth-child(2) { transition-delay: 0.4s; }
.spread--marginalia.is-active .margin-block:nth-child(3) { transition-delay: 0.6s; }
.spread--marginalia.is-active .margin-block:nth-child(4) { transition-delay: 0.8s; }
.spread--marginalia.is-active .margin-block:nth-child(5) { transition-delay: 1s; }

.margin-block .margin-mark {
    font-size: 1.4rem;
    color: var(--c-aurora-violet);
    margin-bottom: 0.2rem;
}

.margin-block:hover {
    transform: translateY(-2px) !important;
}

.mini-blob {
    width: 56px;
    height: 56px;
    overflow: visible;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.mini-blob:hover {
    transform: rotate(15deg) scale(1.15);
}

.mini-blob--alt {
    transform: rotate(-12deg);
}

.margin-center {
    grid-column: 2 / 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem 1.6rem;
    color: var(--c-burnt-sienna);
}

.palimpsest-body {
    margin-top: 1rem;
    margin-bottom: 1.6rem;
}

.palimpsest-quote {
    margin: 1.4rem 0;
    padding: 1.4rem 2rem;
    border-left: 3px solid var(--c-aurora-violet);
    border-radius: 60% 40% 50% 30% / 30% 50% 30% 50%;
    background: rgba(123,94,167,0.06);
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 1.3rem;
    line-height: 1.45;
    color: var(--c-codex-ink);
}

.palimpsest-quote cite {
    display: block;
    margin-top: 0.6rem;
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-size: 0.85rem;
    color: var(--c-cordovan);
    letter-spacing: 0.08em;
    font-weight: 400;
}

.cross-ref {
    color: var(--c-aurora-teal);
    font-style: italic;
    border-bottom: 1px dotted var(--c-aurora-teal);
    padding: 0 0.1em;
    transition: color 200ms;
}

.cross-ref:hover {
    color: var(--c-aurora-rose);
    border-bottom-color: var(--c-aurora-rose);
}

.palimpsest-glosses {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1.6rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(94,75,59,0.18);
}

.gloss {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-size: 0.92rem;
    color: var(--c-cordovan);
    transition: color 200ms;
}

.gloss:hover {
    color: var(--c-aurora-teal);
}

.mono {
    font-family: 'Inconsolata', 'Courier New', monospace;
    font-size: 0.85em;
    color: var(--c-aurora-teal);
    letter-spacing: 0.02em;
}

/* ---------- Colophon spread ---------- */
.colophon-body {
    text-align: left;
}

.colophon-body .spread-heading {
    margin-bottom: 2rem;
}

.colophon-text {
    color: var(--c-parchment);
    margin-bottom: 1.4rem;
}

.colophon-imprint {
    margin-top: 2.4rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 1rem;
    color: var(--c-burnished);
    letter-spacing: 0.08em;
}

.imprint-line em {
    font-style: italic;
    color: var(--c-aurora-teal);
}

.colophon-rule {
    margin-top: 2rem;
    width: 200px;
    height: 14px;
    opacity: 0.6;
}

.colophon-rule svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.colophon-rule path {
    stroke-dasharray: 600;
    stroke-dashoffset: 0;
}

/* Dissolve animation for colophon blob */
.blob--dissolve {
    width: 70%;
    height: 70%;
    animation: blobBreathe 11s ease-in-out infinite, auroraRotate 20s linear infinite, dissolveOpacity 12s 1s ease-in-out infinite;
}

.blob-path--dissolving {
    transition: opacity 4s ease-in-out;
}

.dissolve-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50% 30% 60% 40%;
    background: var(--aurora-grad);
    filter: blur(0.4px);
    opacity: 0;
}

.particle:nth-child(1)  { top: 20%; left: 25%; animation: particleDrift 8s 0s ease-out infinite; }
.particle:nth-child(2)  { top: 30%; left: 70%; animation: particleDrift 9s 0.5s ease-out infinite; }
.particle:nth-child(3)  { top: 55%; left: 40%; animation: particleDrift 10s 1s ease-out infinite; }
.particle:nth-child(4)  { top: 65%; left: 75%; animation: particleDrift 7s 1.5s ease-out infinite; }
.particle:nth-child(5)  { top: 40%; left: 55%; animation: particleDrift 11s 2s ease-out infinite; }
.particle:nth-child(6)  { top: 25%; left: 50%; animation: particleDrift 9s 2.5s ease-out infinite; }
.particle:nth-child(7)  { top: 50%; left: 30%; animation: particleDrift 8s 3s ease-out infinite; }
.particle:nth-child(8)  { top: 70%; left: 50%; animation: particleDrift 10s 3.5s ease-out infinite; }
.particle:nth-child(9)  { top: 35%; left: 35%; animation: particleDrift 9s 4s ease-out infinite; }
.particle:nth-child(10) { top: 60%; left: 60%; animation: particleDrift 8s 4.5s ease-out infinite; }
.particle:nth-child(11) { top: 45%; left: 65%; animation: particleDrift 11s 5s ease-out infinite; }
.particle:nth-child(12) { top: 55%; left: 25%; animation: particleDrift 10s 5.5s ease-out infinite; }

/* ---------- Bottom navigation ---------- */
.codex-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3rem;
    background: rgba(27,20,34,0.92);
    backdrop-filter: blur(12px) saturate(1.1);
    -webkit-backdrop-filter: blur(12px) saturate(1.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.6rem;
    padding: 0 2rem;
    z-index: 100;
    border-top: 1px solid rgba(139,111,71,0.3);
}

.nav-rule {
    position: absolute;
    top: 0;
    left: 8%;
    right: 8%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-burnished) 30%, var(--c-burnished) 70%, transparent);
    opacity: 0.4;
}

.nav-tab {
    background: transparent;
    border: 1px solid rgba(139,111,71,0.3);
    padding: 0.35rem 0.9rem;
    border-radius: 50% 30% 60% 40% / 30% 50% 30% 50%;
    color: var(--c-parchment);
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    cursor: pointer;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, color 0.2s, border-color 0.2s, background 0.2s;
    position: relative;
}

.nav-tab:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,201,167,0.18);
    color: var(--c-vellum);
    border-color: rgba(0,201,167,0.5);
    background: rgba(123,94,167,0.12);
}

.nav-tab.is-active {
    color: var(--c-vellum);
    border-color: var(--c-aurora-teal);
    background: rgba(0,201,167,0.12);
    box-shadow: 0 0 14px rgba(0,201,167,0.45), inset 0 0 8px rgba(0,201,167,0.15);
}

.nav-tab.is-active .tab-num {
    color: var(--c-aurora-teal);
}

.tab-num {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--c-burnished);
    letter-spacing: 0.1em;
    transition: color 0.2s;
}

.tab-label {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: lowercase;
}

.nav-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--aurora-grad);
    width: 20%;
    transition: width 0.6s ease-out;
    box-shadow: 0 0 8px rgba(0,201,167,0.5);
}

/* ---------- Animations ---------- */
@keyframes fadeReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes blobBreathe {
    0%, 100% { transform: scale(1) translate(0,0); }
    50%      { transform: scale(1.03) translate(0, -4px); }
}

@keyframes auroraRotate {
    0%   { --aurora-rotation: 0deg; }
    100% { --aurora-rotation: 30deg; }
}

@keyframes gradientShimmer {
    0%, 100% { opacity: 0.92; }
    50%      { opacity: 1; }
}

@keyframes glintPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50%      { opacity: 1;   transform: scale(1.08); }
}

@keyframes tendrilFlow {
    0%, 100% { stroke-dashoffset: 0; }
    50%      { stroke-dashoffset: 30; }
}

@keyframes dissolveOpacity {
    0%, 30%   { opacity: 1; }
    60%       { opacity: 0.55; }
    100%      { opacity: 1; }
}

@keyframes particleDrift {
    0% {
        opacity: 0;
        transform: translate(0,0) scale(0.4);
    }
    20% {
        opacity: 0.85;
        transform: translate(-12px, -18px) scale(1);
    }
    60% {
        opacity: 0.55;
        transform: translate(-22px, -42px) scale(0.9);
    }
    100% {
        opacity: 0;
        transform: translate(-36px, -80px) scale(0.5);
    }
}

/* ---------- Spread entrance state ---------- */
.spread {
    transition: filter 1s ease-out;
}

.spread.is-active {
    filter: brightness(1);
}

.spread:not(.is-active) {
    filter: brightness(0.92);
}

.spread.is-active .blob {
    animation-play-state: running;
}

/* ---------- Responsive adjustments ---------- */
@media (max-width: 900px) {
    .spread {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 6vh 5vw 5rem 5vw;
    }
    .page--left, .page--right { grid-column: 1 / -1; }
    .spine { display: none; }
    .frontispiece-title { font-size: clamp(2rem, 11vw, 4.5rem); }
    .marginalia { display: none; }
    .thesis-pullquote { position: static; margin-top: 1.5rem; }
    .spread--marginalia {
        grid-template-columns: 1fr;
    }
    .margin-column { display: none; }
    .margin-center { grid-column: 1 / -1; }
    .codex-nav { gap: 0.6rem; padding: 0 0.8rem; }
    .tab-label { display: none; }
}