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

:root {
    --bg: #f7f5f2;
    --fg: #1a1a18;
    --muted: #8a8880;
    --accent: #2d5a3d;
    --line: #e0ddd8;
    --serif: 'DM Serif Display', serif;
    --mono: 'DM Mono', monospace;
    --sans: 'Noto Sans JP', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--sans);
    font-weight: 300;
    line-height: 1.7;
    min-height: 100vh;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(247, 245, 242, 0.88);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}

.nav-logo {
    font-family: var(--serif);
    font-size: 1.15rem;
    letter-spacing: 0.02em;
    color: var(--fg);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--fg);
}

/* ── HERO ── */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 3rem 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero-label {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.1s forwards;
}

.hero h1 {
    font-family: var(--serif);
    font-size: clamp(3rem, 8vw, 6.5rem);
    line-height: 1.05;
    letter-spacing: -0.01em;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.7s 0.2s forwards;
}

.hero h1 em {
    font-style: italic;
    color: var(--accent);
}

.hero-desc {
    max-width: 480px;
    font-size: 1rem;
    color: var(--muted);
    line-height: 1.8;
    opacity: 0;
    animation: fadeUp 0.7s 0.35s forwards;
}

.hero-cta {
    margin-top: 3rem;
    opacity: 0;
    animation: fadeUp 0.7s 0.5s forwards;
}

.btn {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg);
    border: 1px solid var(--fg);
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.btn:hover {
    background: var(--fg);
    color: var(--bg);
}

/* ── SECTION ── */
section {
    max-width: 900px;
    margin: 0 auto;
    padding: 6rem 3rem;
    border-top: 1px solid var(--line);
}

.section-label {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 3rem;
}

.section-label span {
    margin-right: 1rem;
    color: var(--accent);
}

/* ── ABOUT ── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-family: var(--serif);
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.9;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 0.5rem;
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--line);
}

.skill-name {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--fg);
}

.skill-tag {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--accent);
    letter-spacing: 0.06em;
}

/* ── WORKS ── */
.works-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.work-card {
    border: 1px solid var(--line);
    padding: 2rem;
    transition: border-color 0.2s;
    position: relative;
    overflow: hidden;
}

.work-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--accent);
    transition: height 0.3s ease;
}

.work-card:hover::before {
    height: 100%;
}

.work-card:hover {
    border-color: var(--accent);
}

.work-status {
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.8rem;
}

.work-title {
    font-family: var(--serif);
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.work-desc {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 1.2rem;
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag {
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--muted);
    border: 1px solid var(--line);
    padding: 0.25rem 0.6rem;
    letter-spacing: 0.04em;
}

/* ── CONTACT ── */
.contact-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.contact-left h2 {
    font-family: var(--serif);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-left p {
    color: var(--muted);
    font-size: 0.9rem;
    max-width: 360px;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    align-items: flex-end;
}

.contact-link {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-link:hover {
    color: var(--fg);
}

.contact-link::after {
    content: '↗';
    font-size: 0.7rem;
}

/* ── FOOTER ── */
footer {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 3rem;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer p {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.06em;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── SCROLL REVEAL ── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 700px) {
    nav {
        padding: 1.2rem 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .hero,
    section {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .about-grid,
    .works-grid,
    .contact-inner {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 2rem;
    }

    .contact-links {
        align-items: flex-start;
    }
}