/* =================================================================
   taisho.day  ::  Taisho-Roman (大正ロマン) tribute
   Art-Nouveau ornate luxury, Japanese variant.
   Palette tokens use traditional Japanese names.
   ================================================================= */

:root {
    --beni: #c8506a;   /* 紅 reddish-pink */
    --ai:   #264e70;   /* 藍 indigo */
    --kinu: #f0e8d8;   /* 絹 silk-cream */
    --kin:  #c4953a;   /* 金 gold */
    --sumi: #2a2018;   /* 墨 ink */
    --fuji: #8a7ab0;   /* 藤 wisteria */

    --kin-soft:  rgba(196, 149, 58, 0.5);
    --kin-faint: rgba(196, 149, 58, 0.18);
    --beni-faint: rgba(200, 80, 106, 0.12);
    --sumi-soft: rgba(42, 32, 24, 0.7);

    --font-display: "Shippori Mincho B1", "Noto Serif JP", "Cormorant Garamond", serif;
    --font-body-ja: "Noto Serif JP", "Shippori Mincho B1", serif;
    --font-body-en: "Cormorant Garamond", "Shippori Mincho B1", serif;

    --content-max: 880px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--kinu);
    color: var(--sumi);
    font-family: var(--font-body-en);
    font-weight: 500;
    font-size: 1rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

::selection { background: var(--beni); color: var(--kinu); }

/* -------- Reusable typography -------- */

.eyebrow {
    font-family: var(--font-body-en);
    font-size: 0.78rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--kin);
    margin: 0 0 1.2rem 0;
    font-style: italic;
    font-weight: 500;
}
.eyebrow--light { color: var(--kin); }

.section-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.7rem, 3vw, 2.7rem);
    line-height: 1.2;
    color: var(--ai);
    margin: 0 0 1.4rem 0;
    letter-spacing: 0.02em;
}
.section-title em {
    color: var(--beni);
    font-style: italic;
    font-family: var(--font-body-en);
    font-weight: 600;
}
.section-title--light { color: var(--kinu); }
.section-title--light em { color: var(--kin); }
.section-title--ja { font-family: var(--font-body-ja); }

.lead {
    font-family: var(--font-body-en);
    font-size: 1.08rem;
    line-height: 1.85;
    color: var(--sumi);
    margin: 0 0 1.8rem 0;
}
.lead--center { text-align: center; max-width: 640px; margin-left: auto; margin-right: auto; }
.lead em { color: var(--beni); font-style: italic; }

/* -------- Decorative top/bottom ornament bar -------- */

.ornament-bar {
    width: 100%;
    height: 30px;
    background: var(--kinu);
    border-bottom: 1px solid var(--kin-faint);
}
.ornament-bar--bottom { border-top: 1px solid var(--kin-faint); border-bottom: none; }
.ornament-bar__svg { width: 100%; height: 100%; }

/* -------- Background patterns (asanoha + seigaiha) -------- */

.pattern {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.07;
    z-index: 0;
}
/* Asanoha: hemp-leaf approximation via repeating-linear-gradients */
.pattern--asanoha {
    background-color: transparent;
    background-image:
        repeating-linear-gradient( 60deg, var(--kin) 0 1px, transparent 1px 32px),
        repeating-linear-gradient(-60deg, var(--kin) 0 1px, transparent 1px 32px),
        repeating-linear-gradient(  0deg, var(--kin) 0 1px, transparent 1px 32px);
}
/* Seigaiha: wave arcs via radial gradients */
.pattern--seigaiha {
    background-color: transparent;
    background-image:
        radial-gradient(circle at 20px 20px, transparent 14px, var(--kinu) 14px 15px, transparent 16px),
        radial-gradient(circle at 40px 40px, transparent 14px, var(--kinu) 14px 15px, transparent 16px);
    background-size: 40px 40px;
    opacity: 0.18;
}

/* =================================================================
   HERO :: Central Medallion
   ================================================================= */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5rem 1.5rem 6rem;
    background:
        radial-gradient(ellipse at 50% 20%, rgba(200, 80, 106, 0.06), transparent 60%),
        radial-gradient(ellipse at 50% 80%, rgba(138, 122, 176, 0.10), transparent 60%),
        var(--kinu);
    overflow: hidden;
    isolation: isolate;
}

.hero__inner {
    position: relative;
    z-index: 2;
    max-width: var(--content-max);
    width: 100%;
    text-align: center;
}

.hero__era-mark {
    font-family: var(--font-body-en);
    font-style: italic;
    letter-spacing: 0.5em;
    color: var(--kin);
    font-size: 0.85rem;
    margin: 0 0 2.5rem 0;
    text-transform: uppercase;
}

/* Medallion */
.medallion {
    position: relative;
    width: clamp(260px, 50vw, 360px);
    height: clamp(260px, 50vw, 360px);
    margin: 0 auto 3rem;
}
.medallion__frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    animation: medallion-spin 90s linear infinite;
    transform-origin: center;
}
.medallion__petals { transform-origin: 0 0; }

.medallion__core {
    position: absolute;
    inset: 14%;
    border: 2px double var(--kin);
    border-radius: 50%;
    background:
        radial-gradient(circle at 50% 50%, rgba(196, 149, 58, 0.06), transparent 70%),
        var(--kinu);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    box-shadow:
        inset 0 0 0 1px var(--kin-faint),
        0 12px 40px -12px rgba(42, 32, 24, 0.35);
}
.medallion__title-vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-body-ja);
    font-weight: 700;
    color: var(--beni);
    font-size: 0.85rem;
    letter-spacing: 0.4em;
    position: absolute;
    top: 18%;
    right: 12%;
    opacity: 0.85;
}
.medallion__title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(1.7rem, 4.4vw, 2.5rem);
    color: var(--sumi);
    margin: 0;
    line-height: 1;
    letter-spacing: 0.02em;
}
.medallion__dot { color: var(--beni); }
.medallion__sub {
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--kin);
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    margin: 0.6rem 0 0 0;
    text-transform: uppercase;
}

@keyframes medallion-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.hero__lede {
    font-family: var(--font-body-en);
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--sumi);
    max-width: 580px;
    margin: 0 auto 2.5rem;
}
.hero__lede em { color: var(--beni); }

/* CTAs */
.hero__cta {
    display: flex;
    gap: 1.2rem;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    font-family: var(--font-body-en);
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.95rem 2.2rem;
    border: 1px solid var(--kin);
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    display: inline-block;
}
.btn--solid {
    background: var(--ai);
    color: var(--kinu);
    border-color: var(--ai);
}
.btn--solid:hover {
    background: var(--beni);
    border-color: var(--beni);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -10px rgba(200, 80, 106, 0.5);
}
.btn--ghost {
    background: transparent;
    color: var(--ai);
    font-family: var(--font-body-ja);
    letter-spacing: 0.3em;
}
.btn--ghost:hover {
    background: var(--ai);
    color: var(--kinu);
    transform: translateY(-2px);
}

/* Hero corner ornaments */
.hero__corner {
    position: absolute;
    width: 80px;
    height: 80px;
    z-index: 1;
    opacity: 0.85;
}
.hero__corner svg { width: 100%; height: 100%; }
.hero__corner--tl { top: 30px; left: 30px; }
.hero__corner--tr { top: 30px; right: 30px; }
.hero__corner--bl { bottom: 30px; left: 30px; }
.hero__corner--br { bottom: 30px; right: 30px; }

/* =================================================================
   FRAMED SECTIONS (Art Nouveau)
   ================================================================= */

.frame {
    position: relative;
    max-width: 880px;
    margin: 0 auto;
    padding: 4rem 3.5rem;
    background:
        linear-gradient(180deg, var(--kinu), #f5eedc 100%);
}
.frame__svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}
.frame__content {
    position: relative;
    z-index: 1;
}
.frame--inverse {
    background:
        linear-gradient(180deg, var(--kinu), #ece2cd 100%);
}

/* -------- Chronicle section -------- */

.chronicle {
    padding: 6rem 1.5rem;
    background:
        linear-gradient(180deg, var(--kinu), #ebe1cb);
    position: relative;
}

.chronicle__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 3rem;
    margin-top: 2.5rem;
}

.chronicle__entry {
    border-top: 1px solid var(--kin-soft);
    padding-top: 1.4rem;
    position: relative;
    transition: transform 0.4s ease;
}
.chronicle__entry::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 30px;
    height: 1px;
    background: var(--beni);
}
.chronicle__entry:hover {
    transform: translateY(-3px);
}

.entry__year {
    display: block;
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--beni);
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0.3rem;
}
.entry__title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--ai);
    margin: 0 0 0.5rem 0;
    letter-spacing: 0.03em;
}
.chronicle__entry p {
    margin: 0;
    font-family: var(--font-body-en);
    color: var(--sumi);
    font-size: 0.98rem;
    line-height: 1.7;
}

/* =================================================================
   VERTICAL TEXT SECTION (tategaki)
   ================================================================= */

.vertical {
    position: relative;
    background: var(--ai);
    color: var(--kinu);
    padding: 5rem 0 4.5rem;
    overflow: hidden;
    isolation: isolate;
}
.vertical .pattern--seigaiha {
    background-image:
        radial-gradient(circle at 20px 20px, transparent 14px, var(--kin) 14px 15px, transparent 16px),
        radial-gradient(circle at 40px 40px, transparent 14px, var(--kin) 14px 15px, transparent 16px);
    background-size: 40px 40px;
    opacity: 0.08;
}
.vertical__inner {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.vertical__header { text-align: center; margin-bottom: 2.5rem; max-width: 720px; margin-left: auto; margin-right: auto; }
.vertical__sub {
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--kin);
    font-size: 0.95rem;
    margin: 0;
    letter-spacing: 0.1em;
}

.vertical__scroll {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    height: 60vh;
    min-height: 420px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 1.5rem 1rem 2rem;
    direction: ltr;
    display: flex;
    flex-direction: row-reverse;
    gap: 2.5rem;
    border-top: 1px solid var(--kin-soft);
    border-bottom: 1px solid var(--kin-soft);
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--kin) transparent;
}
.vertical__scroll::-webkit-scrollbar { height: 6px; }
.vertical__scroll::-webkit-scrollbar-thumb { background: var(--kin); border-radius: 3px; }
.vertical__scroll::-webkit-scrollbar-track { background: transparent; }

.vertical__column {
    font-family: var(--font-body-ja);
    font-size: 1.05rem;
    line-height: 2.1;
    letter-spacing: 0.18em;
    color: var(--kinu);
    max-height: 100%;
    flex-shrink: 0;
    padding: 0 0.5rem;
    border-left: 1px solid var(--kin-faint);
}
.vertical__column:first-child { border-left: none; }
.vertical__column p { margin: 0; }

.vertical__column--display {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    color: var(--kin);
    letter-spacing: 0.4em;
    line-height: 1.4;
    border-left: none;
    padding-right: 1.5rem;
}
.vertical__column--signature {
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--kin);
    letter-spacing: 0.15em;
    font-size: 0.95rem;
}

.vertical__hint {
    text-align: center;
    margin-top: 1.4rem;
    font-family: var(--font-body-en);
    font-style: italic;
    letter-spacing: 0.3em;
    color: var(--kin);
    font-size: 0.85rem;
    text-transform: uppercase;
    transition: opacity 0.6s ease;
}
.vertical__hint.is-hidden { opacity: 0; }

/* =================================================================
   PALETTE
   ================================================================= */

.palette {
    padding: 6rem 1.5rem;
    background: var(--kinu);
    position: relative;
}
.palette__inner {
    max-width: 1040px;
    margin: 0 auto;
    text-align: center;
}

.palette__list {
    list-style: none;
    margin: 3rem 0 2.5rem;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.2rem;
}

.chip {
    position: relative;
    cursor: pointer;
    background: var(--kinu);
    border: 1px solid var(--kin-faint);
    padding: 1.2rem 0.6rem 1rem;
    text-align: center;
    transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1),
                border-color 0.45s ease,
                box-shadow 0.45s ease;
}
.chip::before {
    content: "";
    position: absolute;
    inset: 4px;
    border: 1px solid transparent;
    transition: border-color 0.45s ease;
    pointer-events: none;
}
.chip:hover, .chip.is-active {
    transform: translateY(-6px);
    border-color: var(--chip-color);
    box-shadow: 0 14px 32px -14px rgba(42, 32, 24, 0.35);
}
.chip:hover::before, .chip.is-active::before {
    border-color: var(--chip-color);
}

.chip__swatch {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--chip-color);
    margin-bottom: 0.9rem;
    position: relative;
    border: 1px solid rgba(42, 32, 24, 0.08);
}
.chip__swatch::after {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px solid rgba(240, 232, 216, 0.45);
    pointer-events: none;
}
.chip__kanji {
    display: block;
    font-family: var(--font-body-ja);
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--sumi);
    line-height: 1;
    margin-bottom: 0.25rem;
}
.chip__name {
    display: block;
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--ai);
    font-size: 0.95rem;
    letter-spacing: 0.15em;
}
.chip__hex {
    display: block;
    font-family: var(--font-body-en);
    font-size: 0.7rem;
    color: var(--kin);
    letter-spacing: 0.15em;
    margin-top: 0.3rem;
    text-transform: uppercase;
}

.palette__readout {
    margin: 2rem auto 0;
    max-width: 600px;
    padding: 1.6rem 2rem;
    border-top: 1px solid var(--kin-soft);
    border-bottom: 1px solid var(--kin-soft);
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    column-gap: 1.5rem;
    row-gap: 0.4rem;
    align-items: center;
    text-align: left;
    transition: background-color 0.5s ease;
}
.readout__kanji {
    grid-row: 1 / span 2;
    font-family: var(--font-body-ja);
    font-weight: 700;
    font-size: 3rem;
    color: var(--beni);
    line-height: 1;
    transition: color 0.5s ease;
}
.readout__name {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--ai);
    font-weight: 700;
    letter-spacing: 0.05em;
}
.readout__hex {
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--kin);
    letter-spacing: 0.2em;
    font-size: 0.85rem;
    text-transform: uppercase;
}
.readout__meaning {
    grid-column: 2 / span 2;
    font-family: var(--font-body-en);
    color: var(--sumi);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* =================================================================
   ATELIER (two columns: EN | JA)
   ================================================================= */

.atelier {
    padding: 6rem 1.5rem;
    background: linear-gradient(180deg, #ebe1cb, var(--kinu));
}
.atelier__content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2.5rem;
    align-items: stretch;
}
.atelier__col p {
    margin: 0 0 1.1rem 0;
}
.atelier__col--ja {
    font-family: var(--font-body-ja);
    line-height: 2;
    letter-spacing: 0.04em;
}
.atelier__col--ja .section-title em {
    font-family: var(--font-body-ja);
    color: var(--beni);
}
.atelier__divider {
    width: 4px;
}
.atelier__divider svg { height: 100%; width: 100%; }
.atelier__signature {
    margin-top: 1.6rem !important;
    font-style: italic;
    color: var(--kin);
    font-size: 0.95rem;
    letter-spacing: 0.1em;
}

/* =================================================================
   FOOTER
   ================================================================= */

.footer {
    background: var(--sumi);
    color: var(--kinu);
    padding: 4rem 1.5rem 3rem;
    text-align: center;
    position: relative;
}
.footer__inner {
    max-width: 720px;
    margin: 0 auto;
}
.footer__divider {
    width: 100%;
    max-width: 600px;
    height: 30px;
    margin: 0 auto 2rem;
}
.footer__crest {
    font-family: var(--font-body-ja);
    font-weight: 700;
    color: var(--kin);
    font-size: 1.6rem;
    letter-spacing: 0.4em;
    margin: 0 0 0.6rem 0;
}
.footer__tagline {
    font-family: var(--font-body-en);
    font-style: italic;
    color: var(--kinu);
    font-size: 1.05rem;
    margin: 0 0 2rem 0;
    line-height: 1.7;
}
.footer__tagline em { color: var(--beni); }
.footer__meta {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-family: var(--font-body-en);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    color: rgba(240, 232, 216, 0.55);
    text-transform: uppercase;
}

/* =================================================================
   RESPONSIVE
   ================================================================= */

@media (max-width: 880px) {
    .frame { padding: 3rem 2rem; }
    .chronicle__grid { grid-template-columns: 1fr; gap: 1.6rem; }
    .palette__list { grid-template-columns: repeat(3, 1fr); }
    .atelier__content { grid-template-columns: 1fr; }
    .atelier__divider { display: none; }
    .atelier__col--ja { border-top: 1px solid var(--kin-soft); padding-top: 2rem; }
    .hero__corner { width: 50px; height: 50px; }
    .hero__corner--tl, .hero__corner--tr { top: 18px; }
    .hero__corner--bl, .hero__corner--br { bottom: 18px; }
    .hero__corner--tl, .hero__corner--bl { left: 18px; }
    .hero__corner--tr, .hero__corner--br { right: 18px; }
    .readout__hex { grid-column: 1 / span 3; grid-row: 3; }
    .palette__readout { grid-template-columns: auto 1fr; }
    .readout__kanji { grid-row: 1 / span 3; }
    .readout__meaning { grid-column: 2; grid-row: 2; }
}

@media (max-width: 520px) {
    .palette__list { grid-template-columns: repeat(2, 1fr); }
    .hero__cta { flex-direction: column; align-items: stretch; }
    .btn { text-align: center; }
    .ornament-bar { height: 22px; }
}

@media (prefers-reduced-motion: reduce) {
    .medallion__frame { animation: none; }
    * { transition-duration: 0.001ms !important; }
}