/* =========================================
   Tokens — shared with both portfolios
   ========================================= */
:root {
    --ink: #0c0d10;
    --paper: #ffffff;
    --bg: #f4f1ec;            /* neutral cream that bridges cyan + beige */
    --bg-cyan: #0138EA;       /* engineer */
    --bg-beige: #e4e8f2;      /* model */
    --bg-deep: #1a1916;       /* model dark */
    --accent-red: #e02d2d;    /* engineer accent */
    --muted: rgba(12, 13, 16, 0.55);
    --line: rgba(12, 13, 16, 0.14);

    --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
    --ease-soft:  cubic-bezier(0.65, 0, 0.35, 1);
    --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: 'Inter', 'Noto Sans JP', system-ui, -apple-system, sans-serif;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    letter-spacing: -0.005em;
    min-height: 100dvh;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--ink); color: #fff; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* =========================================
   Header
   ========================================= */
.site-header {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 50;
    height: 68px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--ink);
    mix-blend-mode: difference;
    pointer-events: none;
}
.site-header > * { pointer-events: auto; }
@media (min-width: 768px) {
    .site-header { padding: 0 36px; height: 76px; }
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: #fff;
}
.brand-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #fff;
}
.brand-name {
    font-family: 'Anton', sans-serif;
    font-size: 16px;
    letter-spacing: 0.18em;
    color: #fff;
}
.brand-sub {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.6);
}
@media (max-width: 540px) {
    .brand-sub { display: none; }
}

.meta-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.25em;
    color: #fff;
}
.meta-num { font-weight: 500; }
.meta-divider {
    width: 18px; height: 1px;
    background: currentColor;
    opacity: 0.5;
}
.meta-label { color: rgba(255,255,255,0.6); }

/* =========================================
   Layout
   ========================================= */
.landing {
    min-height: 100dvh;
    display: grid;
    grid-template-rows: auto 1fr;
    grid-template-columns: 1fr;
    padding-top: 76px;
    padding-bottom: 56px;
}
@media (min-width: 1024px) {
    .landing {
        grid-template-rows: 1fr;
        grid-template-columns: minmax(320px, 32vw) 1fr;
        padding-top: 0;
    }
}

/* =========================================
   Intro (left column on desktop, top on mobile)
   ========================================= */
.intro {
    padding: 32px 22px 36px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 24px;
}
@media (min-width: 1024px) {
    .intro {
        padding: 100px 40px 40px;
        min-height: 100dvh;
        gap: 32px;
        position: sticky;
        top: 0;
    }
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--muted);
    line-height: 1.6;
    flex-wrap: wrap;
}
.eyebrow-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(224, 45, 45, 0.18);
    animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.5; }
}

.intro-title {
    font-family: 'Anton', 'Inter', sans-serif;
    font-size: clamp(2.75rem, 7vw, 4.75rem);
    line-height: 0.92;
    letter-spacing: -0.01em;
    display: flex;
    flex-direction: column;
}
.intro-title em {
    font-family: 'Inter', serif;
    font-weight: 300;
    font-style: italic;
    color: var(--accent-red);
    letter-spacing: -0.02em;
    padding-left: 0.08em;
}
.intro-title .line {
    display: block;
    overflow: hidden;
}
.intro-title .line > span {
    display: inline-block;
    transform: translateY(110%);
    transition: transform 1s var(--ease-out);
}
.intro-title .line:nth-child(1) > span { transition-delay: 0.1s; }
.intro-title .line:nth-child(2) > span { transition-delay: 0.22s; }
.intro-title .line:nth-child(3) > span { transition-delay: 0.34s; }
body.ready .intro-title .line > span { transform: translateY(0); }

.intro-desc {
    font-size: 14px;
    line-height: 1.85;
    color: var(--muted);
    max-width: 360px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.9s var(--ease-out) 0.6s, transform 0.9s var(--ease-out) 0.6s;
}
body.ready .intro-desc { opacity: 1; transform: none; }

.intro-foot {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--muted);
    border-top: 1px solid var(--line);
    padding-top: 18px;
    margin-top: 8px;
    opacity: 0;
    transition: opacity 0.9s var(--ease-out) 0.8s;
}
body.ready .intro-foot { opacity: 1; }

.dot-sep {
    width: 3px; height: 3px;
    border-radius: 50%;
    background: var(--muted);
}

/* =========================================
   Cards
   ========================================= */
.cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 0 22px;
}
@media (min-width: 768px) {
    .cards { gap: 18px; padding: 0 28px; }
}
@media (min-width: 1024px) {
    .cards {
        grid-template-columns: 1fr 1fr;
        padding: 28px 36px 28px 0;
        height: calc(100dvh - 56px);
    }
}

.card {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    border-radius: 24px;
    padding: 28px 26px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 460px;
    color: var(--ink);
    border: 1.5px solid var(--ink);
    transition:
        transform 0.6s var(--ease-spring),
        box-shadow 0.6s var(--ease-out),
        flex 0.7s var(--ease-out);
    opacity: 0;
    transform: translateY(40px);
}
body.ready .card { opacity: 1; transform: translateY(0); }
body.ready .card-eng { transition-delay: 0.5s, 0.5s, 0s; }
body.ready .card-mdl { transition-delay: 0.65s, 0.65s, 0s; }

@media (min-width: 768px) {
    .card { padding: 36px 32px; min-height: 520px; }
}
@media (min-width: 1024px) {
    .card {
        min-height: 0;
        height: 100%;
    }
}

.card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 8px 8px 0 var(--accent-red);
}

/* Engineer card — deep blue */
.card-eng {
    background: var(--bg-cyan);
    color: #f0f4ff;
    border-color: rgba(240,244,255,0.25);
}
.card-eng .card-bg-pattern {
    position: absolute; inset: 0; z-index: -2;
    background-image: radial-gradient(rgba(255,255,255,0.12) 1px, transparent 1.4px);
    background-size: 22px 22px;
    mask-image: radial-gradient(ellipse 100% 80% at 50% 40%, #000 60%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 100% 80% at 50% 40%, #000 60%, transparent 100%);
}
/* 背景レイヤーは両カード共通で絶対配置（フローから外す） */
.card-bg-tint {
    position: absolute; inset: 0; z-index: -1;
}
.card-eng .card-bg-tint {
    background:
        radial-gradient(60% 40% at 80% 20%, rgba(255,255,255,0.12), transparent 70%),
        radial-gradient(50% 50% at 20% 100%, rgba(224, 45, 45, 0.12), transparent 70%);
}
/* White-on-blue readability overrides */
.card-eng .card-jp  { color: rgba(240,244,255,0.75); }
.card-eng .card-en  { color: #f0f4ff; }
.card-eng .card-num { color: rgba(240,244,255,0.7); }
.card-eng .card-desc { color: rgba(240,244,255,0.72); }
.card-eng .card-tag  { background: #f0f4ff; color: #0138EA; }
.card-eng .card-cta  { background: #f0f4ff; color: #0138EA; }
.card-eng:hover { box-shadow: 8px 8px 0 rgba(240,244,255,0.55); }

/* Model card — editorial dark */
.card-mdl {
    background: var(--bg-deep);
    color: #ebe7e0;
    border-color: var(--bg-deep);
}
.card-mdl:hover { box-shadow: 8px 8px 0 #ebe7e0; }

.card-bg-image {
    position: absolute; inset: 0; z-index: -2;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 1.2s var(--ease-out);
    filter: grayscale(0.2) contrast(0.95) brightness(0.7);
}
.card-mdl:hover .card-bg-image { transform: scale(1.08); }

.card-bg-tint--dark {
    background:
        linear-gradient(180deg, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.05) 35%, rgba(0,0,0,0.85) 100%);
}

/* Card head */
.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.25em;
    color: inherit;
    opacity: 0.8;
}
.card-tag {
    display: inline-block;
    font-family: 'Anton', sans-serif;
    font-size: 11px;
    letter-spacing: 0.25em;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--ink);
    color: #fff;
}
.card-tag--ghost {
    background: rgba(255,255,255,0.06);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.4);
    backdrop-filter: blur(8px);
}

/* Card body */
.card-body {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 36px 0;
}
.card-jp {
    font-size: 13px;
    letter-spacing: 0.4em;
    font-weight: 500;
    color: rgba(12,13,16,0.7);
}
.card-mdl .card-jp { color: rgba(235,231,224,0.75); }

.card-en {
    font-family: 'Anton', sans-serif;
    font-weight: 400;
    font-size: clamp(2.5rem, 6.5vw, 4.5rem);
    line-height: 0.9;
    letter-spacing: -0.005em;
    color: var(--ink);
    margin-top: 4px;
    /* 2行分の高さを確保して、左右カードの名前ブロック位置を揃える
       （Engineerは1行・Modelは2行だが両者のフォントサイズは同一） */
    min-height: 1.9em;
}
.card-en--serif {
    font-family: 'Noto Serif JP', 'Inter', serif;
    font-weight: 300;
    letter-spacing: -0.015em;
    color: #ebe7e0;
    line-height: 0.95;
}
.card-en--serif em {
    font-style: italic;
    font-weight: 200;
    color: rgba(235,231,224,0.78);
    padding-left: 0.5em;
}

.card-role {
    margin-top: 10px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent-red);
    font-family: 'Anton', sans-serif;
}
.card-role--light {
    color: rgba(235,231,224,0.7);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-size: 10px;
}

/* Card foot */
.card-foot {
    display: flex;
    flex-direction: column;
    gap: 18px;
    align-items: flex-start;
}

.card-desc {
    font-size: 13px;
    line-height: 1.85;
    color: rgba(12,13,16,0.65);
    max-width: 320px;
}
.card-desc--light { color: rgba(235,231,224,0.65); }

.card-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 13px 22px;
    border-radius: 999px;
    font-family: 'Anton', sans-serif;
    font-size: 13px;
    letter-spacing: 0.18em;
    background: var(--ink);
    color: #fff;
    transition: transform 0.4s var(--ease-spring), background 0.3s, color 0.3s, box-shadow 0.4s;
}
.card:hover .card-cta {
    transform: translate(2px, 0);
}
.cta-icon {
    display: inline-flex;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
    align-items: center;
    justify-content: center;
    transition: transform 0.4s var(--ease-spring);
}
.card:hover .cta-icon {
    transform: rotate(-12deg) scale(1.05);
}

.card-cta--ghost {
    background: transparent;
    color: #ebe7e0;
    border: 1.5px solid rgba(235,231,224,0.5);
}
.card-mdl:hover .card-cta--ghost {
    background: #ebe7e0;
    color: var(--bg-deep);
    border-color: #ebe7e0;
}

/* Card corner stamp */
.card-corner {
    position: absolute;
    top: 0; right: 28px;
    background: var(--accent-red);
    color: #fff;
    font-family: 'Anton', sans-serif;
    font-size: 10px;
    letter-spacing: 0.25em;
    padding: 4px 10px 5px;
    border-radius: 0 0 6px 6px;
}
.card-corner--serif {
    background: rgba(235,231,224,0.95);
    color: var(--bg-deep);
    font-family: 'Noto Serif JP', serif;
    font-style: italic;
    font-weight: 300;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* =========================================
   Page footer
   ========================================= */
.page-foot {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 56px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--muted);
    z-index: 50;
    pointer-events: none;
}
.page-foot > * { pointer-events: auto; }
@media (min-width: 768px) { .page-foot { padding: 0 36px; } }

/* =========================================
   Reduced motion
   ========================================= */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    body.ready .intro-title .line > span,
    body.ready .card { transform: none; opacity: 1; }
}