/* ==========================================================
   namu.style — Light-Academia + Dopamine-Neon
   Magazine-Spread Layout with Kinetic Typography
   ========================================================== */

/* --- Custom Properties --- */
:root {
    --parchment: #faf6f0;
    --walnut: #2c1e0f;
    --gold: #c8a96e;
    --linen: #f0ebe2;
    --neon-magenta: #ff2d9b;
    --neon-yellow: #e8ff00;
    --neon-blue: #00d4ff;
    --neon-green: #7fff00;
    --shadow-sepia: #d4c5a9;
    --spread-spine: 1px;
    --page-padding: clamp(2rem, 5vw, 6rem);
    --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --spring-smooth: cubic-bezier(0.22, 1, 0.36, 1);
    --spring-annotation: cubic-bezier(0.34, 1.3, 0.64, 1);
    --spring-blob: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--parchment);
    color: var(--walnut);
    font-family: 'Crimson Pro', Georgia, serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    line-height: 1.72;
    letter-spacing: 0.01em;
    overflow-x: hidden;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)' opacity='0.03'/%3E%3C/svg%3E");
}

/* --- Reading Mode --- */
body.reading-mode .annotation-card,
body.reading-mode .blob,
body.reading-mode .blob-fullbleed,
body.reading-mode .floating-word,
body.reading-mode .tree-watermark,
body.reading-mode .blob-title,
body.reading-mode .blob-spread-2a,
body.reading-mode .blob-spread-2b,
body.reading-mode .discovery-words,
body.reading-mode .annotation-stack {
    opacity: 0 !important;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

body.reading-mode .highlight {
    background: none;
    padding: 0;
}

body.reading-mode .pull-quote,
body.reading-mode .pull-quote .word-glow {
    text-shadow: none !important;
    color: var(--walnut);
    opacity: 1 !important;
}

body.reading-mode #spine-line {
    background-color: var(--shadow-sepia);
}

/* --- Spine Line --- */
#spine-line {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: var(--spread-spine);
    height: 100vh;
    background-color: var(--gold);
    z-index: 50;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#spine-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10px;
    right: -10px;
    bottom: 0;
}

/* --- Spread / Section Base --- */
.spread {
    position: relative;
    width: 100%;
    min-height: 100vh;
    overflow: hidden;
}

.spread-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
    gap: 0;
}

/* --- Pages --- */
.page {
    position: relative;
    padding: var(--page-padding);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
}

.page-left {
    padding-right: calc(var(--page-padding) + 20px);
}

.page-right {
    padding-left: calc(var(--page-padding) + 20px);
}

/* --- Page Numbers --- */
.page-number {
    position: absolute;
    bottom: 1.5rem;
    font-family: 'Crimson Pro', Georgia, serif;
    font-style: italic;
    font-size: 0.75rem;
    color: var(--gold);
}

.page-number-left {
    left: var(--page-padding);
}

.page-number-right {
    right: var(--page-padding);
}

.page-number-center {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Crimson Pro', Georgia, serif;
    font-style: italic;
    font-size: 0.75rem;
    color: var(--gold);
}

/* Page number auto-counting */
.spread { counter-increment: page-counter 2; }

.spread .page-number-left::after {
    counter-increment: page-counter -1;
    content: counter(page-counter);
}
.spread .page-number-right::after {
    content: counter(page-counter);
}
.spread .page-number-center::after {
    content: counter(page-counter);
}

body { counter-reset: page-counter 0; }

/* --- Typography: Headings (Playfair Display) --- */
h1, h2, h3, .pull-quote {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-style: italic;
    letter-spacing: -0.02em;
}

/* --- Typography: Annotations (Caveat) --- */
.annotation-text,
.tree-label,
.prompt-text,
.floating-word {
    font-family: 'Caveat', cursive;
}

/* --- Typography: UI (DM Sans) --- */
nav, .nav-label, .page-turn-prompt .prompt-text {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: 0.85rem;
    letter-spacing: 0.06em;
}

/* ========================================================
   SPREAD 1: Title / Opening Sequence
   ======================================================== */
.spread-title {
    display: flex;
    align-items: center;
    justify-content: center;
}

.spread-title .spread-inner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.title-overlay {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.title-namu {
    font-size: clamp(4rem, 10vw, 8rem);
    color: var(--walnut);
    line-height: 1;
    margin-bottom: 0;
}

.title-namu .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(40px);
}

.title-namu .char.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s var(--spring-bounce), transform 0.5s var(--spring-bounce);
}

.title-line {
    width: 0;
    height: 1px;
    background-color: var(--gold);
    margin: 0.8rem 0;
    transition: width 0.5s var(--spring-smooth);
}

.title-line.animate-in {
    width: 30vw;
}

.title-style {
    font-family: 'Crimson Pro', Georgia, serif;
    font-style: italic;
    font-weight: 400;
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    color: var(--walnut);
    opacity: 0;
    letter-spacing: 0.3em;
    transition: opacity 0.4s ease, letter-spacing 0.6s var(--spring-smooth);
}

.title-style.animate-in {
    opacity: 1;
    letter-spacing: 0.08em;
}

/* Blob behind title */
.blob-title {
    position: absolute;
    width: 350px;
    height: 350px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0;
    transition: opacity 1s ease;
    pointer-events: none;
}

.blob-title.animate-in {
    opacity: 0.2;
}

/* Tree Watermark */
.tree-watermark {
    position: absolute;
    height: 60vh;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
    transition: opacity 0.8s ease;
}

/* Page turn prompt */
.page-turn-prompt {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.page-turn-prompt.animate-in {
    opacity: 1;
    animation: pulse-prompt 2s ease-in-out infinite;
}

.prompt-text {
    font-family: 'Caveat', cursive;
    font-size: 1rem;
    color: var(--gold);
}

@keyframes pulse-prompt {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

/* ========================================================
   SPREAD 2: Thesis
   ======================================================== */
.spread-thesis .page-right {
    position: relative;
    overflow: visible;
}

.pull-quote {
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    line-height: 1.3;
    color: var(--walnut);
    max-width: 38ch;
}

.pull-quote.neon-glow-text {
    opacity: 0;
    transform: translateY(30px);
}

.pull-quote.neon-glow-text.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s var(--spring-bounce), transform 0.5s var(--spring-bounce);
}

/* Neon glow entrance for pull-quote words */
.pull-quote .word-glow {
    display: inline-block;
    opacity: 0;
}

.pull-quote .word-glow.glow-active {
    opacity: 1;
    animation: neon-on 0.4s ease forwards;
}

@keyframes neon-on {
    0% {
        text-shadow: 0 0 40px var(--neon-magenta);
        opacity: 0.6;
    }
    100% {
        text-shadow: 0 0 0px var(--neon-magenta);
        opacity: 1;
    }
}

/* --- Annotation Cards --- */
.annotation-card {
    background-color: rgba(232, 255, 0, 0.9);
    padding: 0.75rem 1rem;
    border-radius: 2px;
    transform: rotate(var(--rotation, -1deg));
    box-shadow: 0 4px 12px rgba(44, 30, 15, 0.12);
    width: fit-content;
    max-width: 220px;
    transition: transform 0.35s var(--spring-annotation), box-shadow 0.3s ease;
    z-index: 30;
}

.annotation-card:hover {
    transform: rotate(var(--rotation, -1deg)) translateY(-4px);
    box-shadow: 0 8px 20px rgba(44, 30, 15, 0.18);
}

.annotation-text {
    font-size: clamp(0.9rem, 1.5vw, 1.3rem);
    font-weight: 400;
    color: var(--walnut);
    transform: rotate(-1deg);
}

.annotation-float {
    position: absolute;
    left: var(--offset-x, 10%);
    top: var(--offset-y, 50%);
    opacity: 0;
    transform: rotate(var(--rotation, -1deg)) translateY(20px);
}

.annotation-float.animate-in {
    opacity: 1;
    transform: rotate(var(--rotation, -1deg)) translateY(0);
    transition: opacity 0.35s var(--spring-annotation), transform 0.35s var(--spring-annotation);
}

/* Annotation stack (Spread 3 right page) */
.annotation-stack {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    align-items: flex-start;
    padding-top: 2rem;
}

.annotation-stack .annotation-card {
    opacity: 0;
    transform: rotate(var(--rotation, -1deg)) translateY(20px);
    margin-left: calc(var(--stack-offset, 0) * 15px);
}

.annotation-stack .annotation-card.animate-in {
    opacity: 1;
    transform: rotate(var(--rotation, -1deg)) translateY(0);
    transition: opacity 0.35s var(--spring-annotation), transform 0.35s var(--spring-annotation);
}

/* --- Blobs --- */
.blob {
    pointer-events: none;
}

.blob-spread-2a {
    position: absolute;
    width: 320px;
    height: 320px;
    top: 15%;
    right: 5%;
    opacity: 0;
    z-index: 5;
    transition: opacity 0.8s var(--spring-blob);
    animation: blob-morph-a 10s ease-in-out infinite;
}

.blob-spread-2a.animate-in {
    opacity: 0.2;
}

.blob-spread-2b {
    position: absolute;
    width: 280px;
    height: 280px;
    top: 35%;
    right: 20%;
    opacity: 0;
    z-index: 4;
    transition: opacity 0.8s var(--spring-blob);
    animation: blob-morph-b 12s ease-in-out infinite;
}

.blob-spread-2b.animate-in {
    opacity: 0.18;
}

@keyframes blob-morph-a {
    0%, 100% { transform: scale(1) rotate(0deg); }
    33% { transform: scale(1.05) rotate(5deg); }
    66% { transform: scale(0.95) rotate(-3deg); }
}

@keyframes blob-morph-b {
    0%, 100% { transform: scale(1) rotate(0deg); }
    33% { transform: scale(0.97) rotate(-4deg); }
    66% { transform: scale(1.04) rotate(6deg); }
}

/* Blob hover interaction */
.blob.blob-hovered {
    animation-duration: 5s !important;
    opacity: 0.3 !important;
}

/* --- Floating Words --- */
.floating-word {
    position: absolute;
    font-size: 4rem;
    font-weight: 400;
    color: var(--neon-magenta);
    opacity: 0.05;
    z-index: 60;
    pointer-events: none;
    left: var(--start-x, 10%);
    top: var(--start-y, 50%);
    will-change: transform;
}

/* ========================================================
   SPREAD 3: Exploration
   ======================================================== */
.spread-exploration .body-text {
    max-width: 38ch;
}

.spread-exploration .body-text p {
    margin-bottom: 1.5em;
    opacity: 0;
    transform: translateY(20px);
}

.spread-exploration .body-text p.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s var(--spring-smooth), transform 0.4s var(--spring-smooth);
}

/* Highlighter effect */
.highlight {
    background: linear-gradient(transparent 55%, var(--neon-yellow) 55%);
    padding: 0 0.15em;
    transition: text-shadow 0.3s ease;
    cursor: default;
}

.highlight:hover {
    text-shadow: 0 0 20px var(--neon-magenta);
}

/* Text emboss */
.body-text p {
    text-shadow: 2px 2px 0px rgba(200, 169, 110, 0.15);
}

/* ========================================================
   SPREAD 4: Discovery (Full-Bleed)
   ======================================================== */
.spread-discovery {
    display: flex;
    align-items: center;
    justify-content: center;
}

.blob-fullbleed {
    position: absolute;
    width: 70vw;
    height: 70vw;
    max-width: 800px;
    max-height: 800px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    opacity: 0;
    transition: opacity 0.8s var(--spring-blob);
    animation: blob-morph-discovery 12s ease-in-out infinite;
    pointer-events: none;
}

.blob-fullbleed.animate-in {
    opacity: 0.25;
}

@keyframes blob-morph-discovery {
    0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); }
    25% { transform: translate(-50%, -50%) scale(1.03) rotate(3deg); }
    50% { transform: translate(-50%, -50%) scale(0.97) rotate(-2deg); }
    75% { transform: translate(-50%, -50%) scale(1.02) rotate(4deg); }
}

.discovery-words {
    position: relative;
    width: 100%;
    height: 100vh;
    z-index: 10;
}

.kinetic-word {
    position: absolute;
    left: var(--pos-x);
    top: var(--pos-y);
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-style: italic;
    font-size: clamp(2rem, 5vw, 4.5rem);
    color: var(--walnut);
    opacity: 0;
    transform: translateY(30px);
    letter-spacing: -0.02em;
}

.kinetic-word.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s var(--spring-bounce), transform 0.5s var(--spring-bounce);
}

/* ========================================================
   SPREAD 5: Resolution
   ======================================================== */
.spread-resolution .page-left .body-text {
    max-width: 38ch;
}

.spread-resolution .page-left .body-text p {
    margin-bottom: 1.5em;
    opacity: 0;
    transform: translateY(20px);
}

.spread-resolution .page-left .body-text p.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s var(--spring-smooth), transform 0.4s var(--spring-smooth);
}

/* Handwriting reveal clip-path */
.handwriting-reveal p {
    clip-path: inset(0 100% 0 0);
}

.handwriting-reveal p.animate-in {
    clip-path: inset(0 0% 0 0);
    transition: clip-path 1.2s var(--spring-smooth);
}

/* Tree in resolution spread */
.tree-resolution {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 80%;
    width: auto;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.tree-resolution.animate-in {
    opacity: 1;
}

.tree-label {
    font-family: 'Caveat', cursive;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.tree-resolution.animate-in .tree-label {
    opacity: 0.8;
}

/* ========================================================
   SPREAD TRANSITION ANIMATIONS
   ======================================================== */

/* Page-turn animation classes */
.spread.exiting {
    transform: perspective(1200px) rotateY(-3deg);
    opacity: 0.6;
    transition: transform 0.6s var(--spring-smooth), opacity 0.6s ease;
}

.spread.entering {
    transform: perspective(1200px) rotateY(3deg);
    opacity: 0.6;
}

.spread.entered {
    transform: perspective(1200px) rotateY(0deg);
    opacity: 1;
    transition: transform 0.6s var(--spring-smooth), opacity 0.6s ease;
}

/* ========================================================
   RESPONSIVE (Tablet / Mobile)
   ======================================================== */
@media (max-width: 768px) {
    .spread-inner {
        grid-template-columns: 1fr;
    }

    .page {
        min-height: 50vh;
    }

    .page-left {
        padding-right: var(--page-padding);
    }

    .page-right {
        padding-left: var(--page-padding);
    }

    #spine-line {
        display: none;
    }

    .page-number-left {
        left: 1rem;
    }

    .page-number-right {
        right: 1rem;
    }

    .blob-spread-2a,
    .blob-spread-2b {
        width: 200px;
        height: 200px;
    }

    .blob-fullbleed {
        width: 90vw;
        height: 90vw;
    }

    .pull-quote {
        font-size: clamp(1.4rem, 5vw, 2.5rem);
    }

    .kinetic-word {
        font-size: clamp(1.5rem, 6vw, 3rem);
    }

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

    .annotation-float {
        position: relative;
        left: auto;
        top: auto;
        margin-top: 1rem;
    }

    .tree-watermark,
    .tree-resolution {
        height: 40vh;
    }

    .floating-word {
        font-size: 2.5rem;
    }
}

/* ========================================================
   UTILITY
   ======================================================== */

/* Ensure smooth page rendering */
.spread {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Prevent selection on decorative elements */
.blob,
.blob-fullbleed,
.floating-word,
.tree-watermark,
.tree-resolution,
.prompt-arrow {
    user-select: none;
    -webkit-user-select: none;
}