/* ============================================================
   KOAKUMA.QUEST — Mid-Century Gold-Black Luxury Candle
   CSS Custom Properties, Typography, Layout, Animations
   ============================================================ */

/* --- Custom Properties --- */
:root {
    --color-black:       #0D0A00;  /* Deep lacquered black */
    --color-gold:        #C9A84C;  /* Hammered gold */
    --color-parchment:   #F5E8C8;  /* Warm parchment */
    --color-umber:       #2C1F00;  /* Dark umber */
    --color-dark-umber:  #1A0D00;  /* Near-black with red-brown */
    --color-near-black:  #1A1200;  /* Near black */
    --color-antique:     #8B6914;  /* Antique gold-brown */

    --font-display: 'Nunito', sans-serif;
    --font-body:    'Lora', serif;

    --margin-side: clamp(40px, 8vw, 120px);
    --section-divider-color: #1A1200;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-parchment);
    color: var(--color-umber);
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.75;
    overflow-x: hidden;
}

/* --- Typography --- */
.logotype {
    display: block;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(52px, 8vw, 96px);
    letter-spacing: -0.02em;
    color: var(--color-black);
    line-height: 1;
}

.logotype-sub {
    display: block;
    margin-top: 4px;
}

h2 {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(40px, 6vw, 80px);
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--color-black);
}

.heading-gold {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(36px, 5vw, 72px);
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--color-gold);
}

.heading-gold-large {
    font-size: clamp(40px, 5.5vw, 76px);
}

.heading-umber {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(36px, 5vw, 68px);
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--color-umber);
    margin: 12px 0 20px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--color-umber);
    opacity: 0.7;
}

.section-label-gold {
    color: var(--color-gold);
    opacity: 0.85;
    display: block;
    margin-bottom: 10px;
}

.section-label-umber {
    color: var(--color-antique);
    opacity: 0.8;
}

.body-prose {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.78;
    color: var(--color-umber);
    max-width: 500px;
    margin-bottom: 1.2em;
}

.body-prose-light {
    color: var(--color-parchment);
    opacity: 0.88;
}

.body-prose-small {
    font-size: 15px;
    line-height: 1.6;
    opacity: 0.7;
    font-style: italic;
}

/* --- Pull-quote background accent --- */
.pull-quote-bg {
    position: absolute;
    font-family: var(--font-display);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(100px, 18vw, 200px);
    color: var(--color-gold);
    opacity: 0.08;
    line-height: 1;
    pointer-events: none;
    user-select: none;
    bottom: 8vh;
    right: var(--margin-side);
    z-index: 0;
}

.pull-quote-close {
    bottom: 12vh;
    right: auto;
    left: calc(var(--margin-side) - 20px);
    font-size: clamp(80px, 14vw, 160px);
    opacity: 0.06;
}

/* ============================================================
   GOLD HORIZONTAL RULE
   ============================================================ */
.gold-rule {
    display: block;
    border: none;
    height: 5px;
    background-color: var(--color-gold);
    width: 0;
    /* width transitions from 0 → 100% via JS IntersectionObserver */
    transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    margin: 0;
}

.gold-rule.rule-visible {
    width: 100%;
}

/* ============================================================
   SCROLL FADE-IN (body text)
   ============================================================ */
.fade-in-scroll {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   ZOOM-FOCUS ENTRY (illustrations)
   ============================================================ */
.zoom-entry {
    transform: scale(0.92);
    opacity: 0.6;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 1.2s ease-out;
}

.zoom-entry.zoom-visible {
    transform: scale(1.0);
    opacity: 1;
}

/* ============================================================
   CANDLE FLAME SWAY (CSS animation — no JS)
   ============================================================ */
@keyframes flame-sway {
    0%   { transform: rotate(-3deg) scale(1.02); }
    50%  { transform: rotate(3deg)  scale(0.98); }
    100% { transform: rotate(-3deg) scale(1.02); }
}

.candle-flame {
    animation: flame-sway 3s ease-in-out infinite;
}

/* ============================================================
   WAX TEXTURE OVERLAY (SVG background)
   ============================================================ */
.wax-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* ============================================================
   COMPOSITION BASE
   ============================================================ */
.composition {
    position: relative;
    width: 100%;
    min-height: 100vh;
    overflow: hidden;
    /* Section dividers: thick rule in section-divider-color */
    border-top: 5px solid var(--section-divider-color);
}

.composition:first-of-type {
    border-top: none;
}

/* --- Z-Zones base --- */
.zone {
    position: absolute;
    z-index: 2;
}

/* ============================================================
   COMPOSITION 1: THE ENTRY (parchment)
   ============================================================ */
.composition-1 {
    background-color: var(--color-parchment);
}

/* Zone 1: logotype top-left */
.composition-1 .zone-1 {
    top: clamp(40px, 6vh, 80px);
    left: var(--margin-side);
    z-index: 3;
}

/* Frame ornament around logotype */
.frame-ornament {
    position: relative;
    padding: 18px 28px 18px 24px;
    border: 1.5px solid var(--color-antique);
    border-radius: 3px;
    display: inline-block;
}

.frame-ornament::before,
.frame-ornament::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: var(--color-antique);
    transform: rotate(45deg);
}

.frame-ornament::before {
    top: -5px;
    left: -5px;
}

.frame-ornament::after {
    bottom: -5px;
    right: -5px;
}

/* Zone 2: large candle illustration top-right */
.composition-1 .zone-2 {
    top: 0;
    right: var(--margin-side);
    height: 58vh;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
}

.illustration-halo {
    position: absolute;
    width: 320px;
    height: 360px;
    top: -20px;
    right: -20px;
    z-index: 1;
    pointer-events: none;
}

.candle-large {
    position: relative;
    z-index: 2;
    width: clamp(180px, 22vw, 300px);
    height: auto;
    margin-top: 20px;
}

/* Zone 3: gold rule at ~55vh */
.composition-1 .zone-3 {
    top: 55vh;
    left: 0;
    right: 0;
    z-index: 2;
    padding: 0 var(--margin-side);
}

.composition-1 .zone-3 .section-label {
    display: block;
    margin-top: 12px;
    text-align: center;
    letter-spacing: 0.28em;
}

/* Zone 4: prose bottom-left */
.composition-1 .zone-4 {
    bottom: clamp(40px, 8vh, 100px);
    left: var(--margin-side);
    max-width: min(480px, 45vw);
    z-index: 3;
}

/* Zone 5: small chapter candle bottom-right */
.composition-1 .zone-5 {
    bottom: clamp(40px, 8vh, 100px);
    right: var(--margin-side);
    z-index: 3;
}

.candle-small {
    width: clamp(50px, 6vw, 80px);
    height: auto;
}

/* ============================================================
   COMPOSITION 2: THE DARK ROOM (deep black)
   ============================================================ */
.composition-2 {
    background-color: var(--color-black);
}

.dark-atmosphere {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.dark-float {
    width: 200px;
    height: 200px;
    opacity: 0.8;
}

/* Zone 1 dark: gold heading top-left */
.composition-2 .zone-1-dark {
    top: clamp(50px, 8vh, 100px);
    left: var(--margin-side);
    z-index: 3;
}

/* Zone 2 dark: negative space top-right */
.composition-2 .zone-2-dark {
    top: clamp(50px, 8vh, 100px);
    right: var(--margin-side);
    z-index: 2;
    opacity: 0.5;
}

/* Zone 3 dark: gold rule */
.composition-2 .zone-3-dark {
    top: 50vh;
    left: 0;
    right: 0;
    padding: 0 var(--margin-side);
    z-index: 2;
}

/* Zone 4 dark: body prose center-left */
.composition-2 .zone-4-dark {
    top: 55vh;
    left: var(--margin-side);
    max-width: min(560px, 55vw);
    z-index: 3;
    padding-top: 24px;
}

/* ============================================================
   COMPOSITION 3: THE CERAMIC STUDIO (parchment)
   ============================================================ */
.composition-3 {
    background-color: var(--color-parchment);
}

/* Zone 2 studio: ceramic vessel right half (background element) */
.zone-2-studio {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 55%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.illustration-halo-studio {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.ceramic-vessel {
    position: relative;
    z-index: 2;
    width: clamp(260px, 35vw, 460px);
    height: auto;
    opacity: 0.9;
}

/* Zone 4 studio: text block with frame ornament, left-anchored */
.zone-4-studio {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: var(--margin-side);
    max-width: min(420px, 40vw);
    z-index: 3;
}

/* Geometric text frame ornament */
.text-frame-ornament {
    position: relative;
    padding: 32px 28px;
    border: 1px solid var(--color-antique);
    border-radius: 2px;
}

.frame-corner {
    position: absolute;
    width: 18px;
    height: 18px;
}

.frame-tl { top: -9px;  left: -9px; }
.frame-tr { top: -9px;  right: -9px; }
.frame-bl { bottom: -9px; left: -9px; }
.frame-br { bottom: -9px; right: -9px; }

/* Zone 1 studio: section label top-left */
.zone-1-studio {
    position: absolute;
    top: clamp(30px, 4vh, 60px);
    left: var(--margin-side);
    z-index: 3;
}

/* Zone 3 studio: gold rule */
.zone-3-studio {
    position: absolute;
    bottom: 22vh;
    left: 0;
    right: 0;
    padding: 0 var(--margin-side);
    z-index: 2;
}

/* Zone 5 studio: bottom-right small candle */
.zone-5-studio {
    position: absolute;
    bottom: clamp(30px, 6vh, 70px);
    right: var(--margin-side);
    z-index: 3;
}

/* ============================================================
   COMPOSITION 4: THE CLOSE (deep black)
   ============================================================ */
.composition-4 {
    background-color: var(--color-dark-umber);
}

/* Zone 1 close: gold heading top-left */
.zone-1-close {
    position: absolute;
    top: clamp(50px, 8vh, 100px);
    left: var(--margin-side);
    max-width: min(500px, 48vw);
    z-index: 3;
}

/* Zone 2 close: large candle top-right */
.zone-2-close {
    position: absolute;
    top: 0;
    right: var(--margin-side);
    height: 65vh;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    z-index: 2;
}

.candle-large-close {
    margin-top: 30px;
    width: clamp(160px, 18vw, 260px);
}

/* Zone 3 close: gold rule */
.zone-3-close {
    position: absolute;
    top: 62vh;
    left: 0;
    right: 0;
    padding: 0 var(--margin-side);
    z-index: 2;
}

/* Zone 4 close: prose bottom-left */
.zone-4-close {
    position: absolute;
    bottom: clamp(50px, 9vh, 110px);
    left: var(--margin-side);
    max-width: min(480px, 46vw);
    z-index: 3;
}

/* Zone 5 close: colophon ornament bottom-right */
.zone-5-close {
    position: absolute;
    bottom: clamp(40px, 7vh, 90px);
    right: var(--margin-side);
    z-index: 3;
}

.colophon-ornament {
    width: clamp(60px, 6vw, 90px);
    height: auto;
}

/* ============================================================
   MOBILE — Single column adaptation
   Z-pattern collapses but illustration-text rhythm preserved
   ============================================================ */
@media (max-width: 768px) {
    :root {
        --margin-side: 28px;
    }

    .composition {
        min-height: 100svh;
        padding: 0;
    }

    /* All zones become static flow on mobile */
    .zone,
    .zone-1, .zone-2, .zone-3, .zone-4, .zone-5,
    .zone-1-dark, .zone-2-dark, .zone-3-dark, .zone-4-dark,
    .zone-2-studio, .zone-4-studio, .zone-1-studio, .zone-3-studio, .zone-5-studio,
    .zone-1-close, .zone-2-close, .zone-3-close, .zone-4-close, .zone-5-close {
        position: static;
        transform: none;
    }

    /* --- Comp 1 mobile --- */
    .composition-1 {
        display: flex;
        flex-direction: column;
        padding: 40px var(--margin-side) 48px;
        gap: 0;
    }

    .composition-1 .zone-1 {
        order: 1;
        margin-bottom: 24px;
    }

    .composition-1 .zone-2 {
        order: 2;
        display: flex;
        justify-content: center;
        margin-bottom: 0;
        height: auto;
    }

    .candle-large {
        width: 140px;
    }

    .illustration-halo {
        display: none;
    }

    .composition-1 .zone-3 {
        order: 3;
        padding: 0;
        margin: 20px 0;
    }

    .composition-1 .zone-4 {
        order: 4;
        max-width: 100%;
        margin-bottom: 20px;
    }

    .composition-1 .zone-5 {
        order: 5;
        display: flex;
        justify-content: flex-end;
    }

    /* --- Comp 2 mobile --- */
    .composition-2 {
        display: flex;
        flex-direction: column;
        padding: 48px var(--margin-side) 48px;
        min-height: 100svh;
    }

    .composition-2 .zone-1-dark {
        order: 1;
        margin-bottom: 16px;
    }

    .composition-2 .zone-2-dark {
        display: none;
    }

    .composition-2 .zone-3-dark {
        order: 2;
        padding: 0;
        margin: 20px 0;
    }

    .composition-2 .zone-4-dark {
        order: 3;
        max-width: 100%;
    }

    .pull-quote-bg {
        display: none;
    }

    /* --- Comp 3 mobile --- */
    .composition-3 {
        display: flex;
        flex-direction: column;
        padding: 48px var(--margin-side) 48px;
        min-height: 100svh;
        gap: 0;
    }

    .zone-1-studio {
        order: 1;
        margin-bottom: 12px;
    }

    .zone-4-studio {
        order: 2;
        max-width: 100%;
        margin-bottom: 24px;
    }

    .text-frame-ornament {
        padding: 20px 16px;
    }

    .zone-2-studio {
        order: 3;
        position: static;
        width: 100%;
        justify-content: center;
        padding: 20px 0;
    }

    .ceramic-vessel {
        width: 80%;
        max-width: 280px;
    }

    .zone-3-studio {
        order: 4;
        position: static;
        padding: 0;
        margin: 20px 0;
    }

    .zone-5-studio {
        order: 5;
        position: static;
        display: flex;
        justify-content: flex-end;
    }

    /* --- Comp 4 mobile --- */
    .composition-4 {
        display: flex;
        flex-direction: column;
        padding: 48px var(--margin-side) 60px;
        min-height: 100svh;
        gap: 0;
    }

    .zone-1-close {
        order: 1;
        max-width: 100%;
        margin-bottom: 24px;
    }

    .zone-2-close {
        order: 2;
        height: auto;
        display: flex;
        justify-content: center;
        margin-bottom: 20px;
    }

    .candle-large-close {
        width: 120px;
        margin-top: 0;
    }

    .zone-3-close {
        order: 3;
        position: static;
        padding: 0;
        margin: 20px 0;
    }

    .zone-4-close {
        order: 4;
        position: static;
        max-width: 100%;
        margin-bottom: 24px;
    }

    .zone-5-close {
        order: 5;
        position: static;
        display: flex;
        justify-content: flex-end;
    }

    .pull-quote-close {
        display: none;
    }

    .body-prose {
        max-width: 100%;
    }
}

/* ============================================================
   TABLET intermediate (769–1024px)
   ============================================================ */
@media (min-width: 769px) and (max-width: 1024px) {
    :root {
        --margin-side: 48px;
    }

    .logotype {
        font-size: clamp(44px, 7vw, 72px);
    }

    .candle-large {
        width: clamp(160px, 20vw, 240px);
    }

    .composition-1 .zone-4 {
        max-width: min(380px, 48vw);
    }

    .zone-4-studio {
        max-width: min(360px, 42vw);
    }
}

/* ============================================================
   LARGE DESKTOP (>1400px) — extra breathing room
   ============================================================ */
@media (min-width: 1400px) {
    :root {
        --margin-side: 140px;
    }
}