/* --- CSS Variables --- */
:root {
    --bg-color: #FFFFFF; /* Light background */
    --fg-color: #121212; /* Dark foreground */
    --accent-color: #000000; /* Black accent */
    --border-color: rgba(0, 0, 0, 0.2); /* Dark border */
    --font-primary: 'Shippori Mincho', serif;
    --font-secondary: 'Inter', sans-serif;
}

/* --- General Styles --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border-radius: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--fg-color);
    font-family: var(--font-secondary);
    /* cursor: none; */
}

body.floating-world-page,
body.floating-world {
    background-color: #ffffff;
    color: #121212;
    overflow-x: clip;
    overflow-y: visible;
}

body.floating-world-page.is-loading {
    overflow: hidden;
}

.is-loading .floating-main {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s ease;
}

.floating-main {
    transition: opacity 0.6s ease;
}

body.lightbox-open {
    overflow: hidden;
}

body.floating-world-page .main-header {
    /* inherit default header styling */
}

/* --- Main Layout --- */
.main-content {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 100px max(40px, var(--sa-r)) 60px max(40px, var(--sa-l));
    box-sizing: border-box;
}

@media (max-width: 640px) {
    .main-content {
        align-items: flex-start;
        padding: 80px max(24px, var(--sa-r)) 60px max(24px, var(--sa-l));
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .main-content {
        align-items: flex-start;
        padding: 64px max(24px, var(--sa-r)) 40px max(24px, var(--sa-l));
    }
}

.hero-content {
    width: 100%;
    max-width: 900px; /* Adjust as needed */
    text-align: center;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    margin-bottom: 16px;
    opacity: .8;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 900;
    line-height: 1.1;
    white-space: nowrap; /* Prevent wrapping */
    margin-bottom: 24px;
}

.kerning-pre {
    display: inline-block;
    letter-spacing: -0.1em;
}

.kerning-tight {
    display: inline-block;
    letter-spacing: -0.12em;
    font-feature-settings: "palt";
}

.kerning-tight .small-kana {
    display: inline-block;
    margin-left: -0.22em;
    margin-right: -0.15em;
}

.about-text {
    font-size: 1rem;
    line-height: 1.8;
    margin-top: 2rem;
}

.about-text a {
    color: inherit;
    font-weight: 700;
    text-decoration: underline;
}

/* --- Header --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: clamp(18px, 2.5vh, 26px) clamp(20px, 3.5vw, 48px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.22em;
    z-index: 1000;
    pointer-events: none;
    background: transparent !important;
    border: none !important;
}

.main-header .header-item,
.main-header .header-item a {
    pointer-events: auto;
    display: inline-block;
    color: rgba(17, 17, 17, 0.65) !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    padding: 8px 0;
    border: none !important;
    box-shadow: none !important;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.22em;
    line-height: 1;
    text-decoration: none;
    text-transform: uppercase;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.main-header .header-item a:hover {
    color: #000000 !important;
    background: transparent !important;
    border: none !important;
    opacity: 1;
}

@media (max-height: 500px) and (orientation: landscape) {
    .main-header {
        padding: 12px 20px;
    }
}

body.floating-world-page .main-header {
    background: transparent !important;
    backdrop-filter: none !important;
}

body.floating-world-page .main-header .header-item a {
    color: rgba(17, 17, 17, 0.65) !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    padding: 8px 0;
    border: none !important;
    box-shadow: none !important;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.22em;
}

body.floating-world-page .main-header .header-item a:hover {
    background: transparent !important;
    color: #000000 !important;
    border: none !important;
}

/* --- Accessibility Helpers --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- Floating Loader --- */
.floating-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    color: var(--fg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 15000;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.floating-loader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.floating-loader__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    font-family: var(--font-secondary);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.floating-loader__label {
    font-size: 0.9rem;
    opacity: 0.7;
}

.floating-loader__progress {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    font-family: var(--font-primary);
}

.skip-link {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translate(-50%, -150%);
    padding: 0.6rem 1.2rem;
    background: rgba(255, 255, 255, 0.95);
    color: #070708;
    font-weight: 600;
    transition: transform 0.35s ease, opacity 0.35s ease;
    opacity: 0;
    z-index: 100;
}

.skip-link:focus {
    transform: translate(-50%, 0);
    opacity: 1;
    outline: none;
}

/* --- Floating World Works Page --- */
#app[data-page="floating-world"] {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

.floating-main {
    flex: 1;
    padding: 0;
}

.floating-stage {
    position: relative;
    width: 100%;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: 0;
}

.floating-stage::before,
.floating-stage::after {
    content: "";
    display: none;
}

.floating-scene {
    position: fixed;
    inset: 0;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100%;
    height: 100vh;
    height: 100dvh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 2;
}

#floating-canvas {
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
    background: transparent;
    vertical-align: top;
}

.floating-scroll-spacer {
    position: relative;
    width: 1px;
    height: 200vh;
}

@media (max-width: 900px) {
    .floating-stage {
        padding-top: 0;
    }

    .floating-scroll-spacer {
        height: 160vh;
    }
}

@media (max-width: 540px) {
    .floating-stage {
        padding-top: 0;
    }

    .floating-scroll-spacer {
        height: 140vh;
    }
}

/* --- Floating Lightbox --- */
.floating-lightbox {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 20000;
}

.floating-lightbox.is-active {
    opacity: 1;
    pointer-events: auto;
}

.floating-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
}

.floating-lightbox__inner {
    position: relative;
    max-width: min(calc(100vw - 32px), 1600px);
    max-height: min(calc(100vh - 32px), 1600px);
    max-height: min(calc(100dvh - 32px), 1600px);
    background: transparent;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
    padding: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-lightbox__content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 2000px;
}

.floating-lightbox__image {
    position: relative;
    max-width: min(84vw, calc(100vw - 64px));
    max-height: 82vh;
    max-height: 82dvh;
    object-fit: contain;
    display: block;
    transform-origin: center;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    will-change: transform;
}

.floating-lightbox__image.is-animating {
    animation: cardFlipIn 0.8s cubic-bezier(0.22, 0.68, 0.34, 1.02) forwards;
}

.floating-lightbox__close {
    position: fixed;
    top: max(14px, var(--sa-t));
    right: max(18px, var(--sa-r));
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: rgba(0, 0, 0, 0.78);
    color: #ffffff;
    width: 44px;
    height: 44px;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, transform 0.2s ease;
    z-index: 20010;
    pointer-events: auto;
    touch-action: manipulation;
    transform: translateZ(100px);
}

.floating-lightbox__close:hover {
    background: rgba(0, 0, 0, 0.95);
}

@keyframes cardFlipIn {
    0% {
        transform: translate(var(--card-start-x, 0px), var(--card-start-y, 0px)) rotateY(-90deg) scale(0.35);
        opacity: 0;
    }
    55% {
        opacity: 1;
    }
    70% {
        transform: translate(calc(var(--card-start-x, 0px) * 0.25), calc(var(--card-start-y, 0px) * 0.25)) rotateY(15deg) scale(1.08);
    }
    100% {
        transform: translate(0, 0) rotateY(0deg) scale(1);
        opacity: 1;
    }
}



@keyframes loaderGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes loaderDots {
    0% { content: ""; }
    33% { content: "."; }
    66% { content: ".."; }
    100% { content: "..."; }
}



/* --- Ending Card --- */
.ending-card {
    position: fixed;
    inset: 0;
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3;
    --ending-progress: 0;
    opacity: var(--ending-progress);
    pointer-events: none;
    transform: translate3d(0, calc((1 - var(--ending-progress)) * 48px), 0) scale(calc(0.85 + var(--ending-progress) * 0.15));
}

.ending-card.is-visible {
    pointer-events: none;
}

.ending-card p {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    color: #000000;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: -0.1em;
    text-shadow: 0 18px 28px rgba(0, 0, 0, 0.12);
    opacity: var(--ending-progress);
    transform: translate3d(0, calc((1 - var(--ending-progress)) * 64px), 0);
}

/* Scroll Guide */
.scroll-guide {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) perspective(400px) rotateX(60deg);
    width: 80px;
    height: 80px;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: none;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
    animation: bounce-arrow-3d 2s infinite cubic-bezier(0.4, 0, 0.2, 1);
    color: #ffffff;
}

.scroll-guide svg {
    width: 60px;
    height: 60px;
    fill: currentColor;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.4));
}

.scroll-guide.is-hidden {
    opacity: 0;
    transform: translate(-50%, calc(-50% + 20px)) perspective(400px) rotateX(60deg);
    animation: none;
}

@keyframes bounce-arrow-3d {
    0%, 20%, 50%, 80%, 100% {
        transform: translate(-50%, -50%) perspective(400px) rotateX(60deg);
    }
    40% {
        transform: translate(-50%, calc(-50% - 25px)) perspective(400px) rotateX(60deg);
    }
    60% {
        transform: translate(-50%, calc(-50% - 12px)) perspective(400px) rotateX(60deg);
    }
}


/* Floating World: mobile Chrome viewport and canvas edge fixes */
html:has(body.floating-world-page) {
    width: 100%;
    min-height: 100%;
    background: #fff;
    overflow-x: clip;
    overflow-y: auto;
}

body.floating-world-page {
    width: 100%;
    min-height: 100%;
    background: #fff;
    overflow-x: clip;
    overflow-y: visible;
}

body.floating-world-page .floating-stage,
body.floating-world-page .floating-scene {
    width: 100%;
}

@supports (height: 100dvh) {
    body.floating-world-page .floating-scene {
        height: 100dvh;
    }
}

@media (max-width: 640px) {
    body.floating-world-page .ending-card p {
        font-size: clamp(1.8rem, 7vw, 3rem);
        max-width: 94vw;
        overflow-wrap: anywhere;
    }
}


/* --- Safe area (notch): paint the page color behind the cutout, keep content & header inside it --- */
:root{--sa-t:env(safe-area-inset-top,0px);--sa-r:env(safe-area-inset-right,0px);--sa-b:env(safe-area-inset-bottom,0px);--sa-l:env(safe-area-inset-left,0px)}
html { background-color: var(--bg-color); }
.main-header {
    top: var(--sa-t);
    left: var(--sa-l);
    width: calc(100% - var(--sa-l) - var(--sa-r));
}