/* ═══════════════════════════════════════════════════════════════
   柳町 一磨 Portfolio — style.css
   Design: Neumorphism × Glassmorphism — Light & Premium
   ═══════════════════════════════════════════════════════════════ */

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

:root {
    /* Light neumorphic base */
    --bg:         #eae8e4;
    --bg2:        #ece9e5;
    --surface:    #eae8e4;

    /* Neumorphism shadows */
    --neu:        6px 6px 18px #cbc8c3, -6px -6px 18px #ffffff;
    --neu-sm:     3px 3px 10px #cbc8c3, -3px -3px 10px #ffffff;
    --neu-in:     inset 3px 3px 8px #cbc8c3, inset -3px -3px 8px #ffffff;
    --neu-lg:     10px 10px 30px #c2bfba, -10px -10px 30px #ffffff;

    /* Glass */
    --glass-bg:   rgba(255,255,255,0.55);
    --glass-bg2:  rgba(255,255,255,0.75);
    --glass-bd:   rgba(255,255,255,0.8);
    --glass-sh:   0 8px 32px rgba(120,110,100,0.12);

    /* Text */
    --t1:         #2a2520;
    --t2:         #6b6560;
    --t3:         #9c9590;

    /* Accent colors */
    --accent:     #4a7c59;
    --accent-l:   rgba(74,124,89,0.1);
    --accent-b:   rgba(74,124,89,0.2);
    --purple:     #7c5cbf;
    --purple-l:   rgba(124,92,191,0.1);
    --red:        #c0392b;
    --red-l:      rgba(192,57,43,0.1);
    --blue:       #2563eb;
    --blue-l:     rgba(37,99,235,0.1);
    --gold:       #b7791f;
    --gold-l:     rgba(183,121,31,0.1);

    --font-head:  'Syne', 'Noto Sans JP', sans-serif;
    --font-body:  'Space Grotesk', 'Noto Sans JP', sans-serif;
    --radius:     16px;
    --radius-lg:  24px;
    --radius-xl:  32px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--t1);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(234,232,228,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.6);
    box-shadow: 0 2px 20px rgba(120,110,100,0.08);
}
.nav-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 40px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.logo-avatar {
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), #2d5a40);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-head); font-size: 14px; font-weight: 800;
    color: #fff; letter-spacing: -.02em;
    box-shadow: var(--neu-sm);
}
.logo-name { display: block; font-size: 16px; font-weight: 700; color: var(--t1); font-family: var(--font-head); line-height: 1.2; }
.logo-role { display: block; font-size: 10px; color: var(--t3); letter-spacing: .1em; }
.nav-links { display: flex; gap: 8px; list-style: none; }
.nav-links a {
    display: block; padding: 8px 18px; border-radius: 100px;
    font-size: 13px; font-weight: 600; color: var(--t2);
    transition: all 0.25s;
}
.nav-links a:hover {
    background: var(--glass-bg); box-shadow: var(--neu-sm);
    color: var(--t1);
}
.nav-links a.active {
    background: var(--accent); color: #fff;
    box-shadow: 0 4px 14px rgba(74,124,89,0.35);
}
.nav-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-menu-btn span { display: block; width: 22px; height: 1.5px; background: var(--t2); transition: all 0.3s; border-radius: 2px; }
.mobile-menu {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(234,232,228,0.95); backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.5); padding: 16px 40px;
}
.mobile-menu.open { display: block; }
.mobile-menu ul { list-style: none; }
.mobile-menu li { padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,.05); }
.mobile-menu a { font-size: 16px; color: var(--t2); font-weight: 600; }

/* ── Glassmorphism ──────────────────────────────────────────── */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-bd);
    box-shadow: var(--glass-sh);
}
.glass-card {
    background: var(--glass-bg2);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-bd);
    box-shadow: var(--neu-lg);
}

/* ── Container & Section ────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.section { padding: 80px 0; }

.section-label {
    display: inline-block;
    font-size: 10px; letter-spacing: .25em; text-transform: uppercase;
    color: var(--accent); font-weight: 700; margin-bottom: 12px;
    padding: 4px 14px; border-radius: 100px;
    background: var(--accent-l);
    border: 1px solid var(--accent-b);
}
.section-title {
    font-family: var(--font-head);
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800; letter-spacing: -.025em;
    line-height: 1.15; color: var(--t1); margin-bottom: 14px;
}
.section-sub { font-size: 15px; color: var(--t2); margin-bottom: 56px; }

/* ── Reveal Animation ───────────────────────────────────────── */
.reveal {
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* ── Page Header ─────────────────────────────────────────────── */
.works { padding-top: 60px; }
.page-header {
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 40px; margin-bottom: 60px; flex-wrap: wrap;
}
.page-header-left { flex: 1; min-width: 240px; }
.page-header-right { flex-shrink: 0; }

.intro-card {
    display: flex; align-items: center; gap: 16px;
    padding: 20px 24px; border-radius: var(--radius-lg);
}
.intro-avatar {
    width: 52px; height: 52px; border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), #2d5a40);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-head); font-size: 18px; font-weight: 800;
    color: #fff; flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(74,124,89,0.35);
}
.intro-name { font-size: 18px; font-weight: 800; color: var(--t1); font-family: var(--font-head); line-height: 1.3; }
.intro-title { font-size: 11px; color: var(--t3); line-height: 1.5; margin-top: 2px; }

/* ── Project List ────────────────────────────────────────────── */
.projects-list { display: flex; flex-direction: column; gap: 64px; }

.project-card {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 48px; align-items: center;
    padding: 40px; border-radius: var(--radius-xl);
    background: var(--glass-bg2);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-bd);
    box-shadow: var(--neu-lg);
    transition: transform 0.35s var(--transition), box-shadow 0.35s;
}
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 14px 14px 40px #babab0, -14px -14px 40px #ffffff;
}
.project-card:nth-child(even) .project-image-col { order: 2; }
.project-card:nth-child(even) .project-content-col { order: 1; }

/* ── Project Image ───────────────────────────────────────────── */
.project-image-col { position: relative; }
.project-image-wrap {
    position: relative; border-radius: var(--radius-lg);
    overflow: hidden; aspect-ratio: 16/10;
    box-shadow: var(--neu);
    cursor: pointer;
    transition: transform 0.4s var(--transition), box-shadow 0.4s;
}
.project-image-wrap:hover { transform: scale(1.02); box-shadow: var(--neu-lg); }
.project-image-wrap img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s var(--transition);
}
.project-image-wrap:hover img { transform: scale(1.04); }
.project-image-overlay {
    position: absolute; inset: 0;
    background: rgba(42,37,32,0.5);
    backdrop-filter: blur(2px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.3s;
}
.project-image-wrap:hover .project-image-overlay { opacity: 1; }
.overlay-btn {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: 100px;
    background: var(--glass-bg2); backdrop-filter: blur(12px);
    border: 1px solid var(--glass-bd);
    font-size: 13px; font-weight: 700; color: var(--t1);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

/* ── Project Content ─────────────────────────────────────────── */
.project-content-col { min-width: 0; }
.project-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.project-category {
    font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
    color: var(--t3); font-weight: 600;
}
.project-status {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 12px; border-radius: 100px;
    font-size: 10px; font-weight: 700; letter-spacing: .06em;
}
.status-active {
    background: rgba(74,124,89,0.1);
    color: var(--accent);
    border: 1px solid rgba(74,124,89,0.25);
}
.status-active::before {
    content: ''; width: 5px; height: 5px; border-radius: 50%;
    background: var(--accent); animation: pulse 2s infinite; display: inline-block;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(1.5)} }
.status-dev {
    background: var(--gold-l); color: var(--gold);
    border: 1px solid rgba(183,121,31,0.25);
}
.project-year { font-size: 11px; color: var(--t3); }

.project-title {
    font-family: var(--font-head);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 800; letter-spacing: -.02em;
    line-height: 1.2; color: var(--t1); margin-bottom: 6px;
}
.project-subtitle {
    font-size: 11px; letter-spacing: .18em; color: var(--t3);
    text-transform: uppercase; margin-bottom: 16px;
}
.project-overview { font-size: 14px; color: var(--t2); line-height: 1.8; margin-bottom: 24px; }

.feature-list {
    list-style: none; display: flex; flex-direction: column; gap: 6px; margin-bottom: 24px;
}
.feature-list li {
    font-size: 12px; color: var(--t2);
    padding: 8px 14px; border-radius: 10px;
    background: var(--surface);
    box-shadow: var(--neu-sm);
    line-height: 1.5;
    transition: transform 0.2s;
}
.feature-list li:hover { transform: translateX(4px); }

.project-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 24px; }
.tech-badge {
    padding: 5px 12px; border-radius: 8px;
    background: var(--surface); box-shadow: var(--neu-sm);
    font-size: 11px; font-weight: 700; color: var(--t2);
    letter-spacing: .04em; font-family: 'Space Grotesk', monospace;
    transition: all 0.2s;
}
.tech-badge:hover { background: var(--accent); color: #fff; box-shadow: 0 4px 12px rgba(74,124,89,0.35); }

.project-highlight {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 16px; border-radius: 12px;
    background: var(--accent-l); border: 1px solid var(--accent-b);
    font-size: 12px; font-weight: 700; color: var(--accent);
}

.detail-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: 100px;
    background: var(--surface); box-shadow: var(--neu);
    color: var(--t1); font-size: 13px; font-weight: 700;
    border: none; cursor: pointer;
    transition: all 0.3s; margin-top: 16px;
}
.detail-btn:hover {
    background: var(--accent); color: #fff;
    box-shadow: 0 6px 20px rgba(74,124,89,0.4);
    transform: translateY(-1px);
}

/* ── Color accents per project ──────────────────────────────── */
.project-card[data-color="green"] .project-title { color: var(--accent); }
.project-card[data-color="blue"] .project-title { color: var(--blue); }
.project-card[data-color="red"] .project-title { color: var(--red); }
.project-card[data-color="purple"] .project-title { color: var(--purple); }

.project-card[data-color="blue"] .detail-btn:hover { background: var(--blue); box-shadow: 0 6px 20px rgba(37,99,235,0.4); }
.project-card[data-color="red"] .detail-btn:hover { background: var(--red); box-shadow: 0 6px 20px rgba(192,57,43,0.4); }
.project-card[data-color="purple"] .detail-btn:hover { background: var(--purple); box-shadow: 0 6px 20px rgba(124,92,191,0.4); }
.project-card[data-color="gold"] .detail-btn:hover { background: var(--gold); box-shadow: 0 6px 20px rgba(183,121,31,0.4); }

.project-card[data-color="blue"] .tech-badge:hover { background: var(--blue); }
.project-card[data-color="red"] .tech-badge:hover { background: var(--red); }
.project-card[data-color="purple"] .tech-badge:hover { background: var(--purple); }
.project-card[data-color="gold"] .tech-badge:hover { background: var(--gold); color: #fff; box-shadow: 0 4px 12px rgba(183,121,31,0.35); }

.project-card[data-color="blue"] .project-highlight { background: var(--blue-l); border-color: rgba(37,99,235,0.25); color: var(--blue); }
.project-card[data-color="red"] .project-highlight { background: var(--red-l); border-color: rgba(192,57,43,0.25); color: var(--red); }
.project-card[data-color="purple"] .project-highlight { background: var(--purple-l); border-color: rgba(124,92,191,0.25); color: var(--purple); }
.project-card[data-color="gold"] .project-highlight { background: var(--gold-l); border-color: rgba(183,121,31,0.25); color: var(--gold); }
.project-card[data-color="gold"] .project-title { color: var(--gold); }

/* ── Skills ─────────────────────────────────────────────────── */
.skills { background: var(--bg2); }
.skills-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px; margin-top: 48px;
}
.skill-card {
    padding: 22px 16px; border-radius: var(--radius);
    background: var(--surface); box-shadow: var(--neu);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: default;
}
.skill-card:hover { transform: translateY(-4px); box-shadow: var(--neu-lg); }
.skill-icon { font-size: 26px; margin-bottom: 10px; line-height: 1; }
.skill-name { font-size: 11px; font-weight: 700; color: var(--t2); letter-spacing: .04em; }

/* ── Contact ────────────────────────────────────────────────── */
.contact-glass {
    max-width: 600px; margin: 0 auto; text-align: center;
    padding: 56px 48px; border-radius: var(--radius-xl);
    background: var(--glass-bg2);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-bd);
    box-shadow: var(--neu-lg);
}
.contact-glass .section-label { display: block; margin-bottom: 12px; }
.contact-sub { font-size: 15px; color: var(--t2); margin: 16px 0 36px; line-height: 1.7; }
.contact-email-btn {
    display: inline-flex; align-items: center; gap: 14px;
    padding: 16px 28px; border-radius: var(--radius);
    background: var(--surface); box-shadow: var(--neu);
    font-size: 16px; font-weight: 700; color: var(--t1);
    transition: all 0.35s; margin-bottom: 32px;
}
.contact-email-btn:hover {
    background: var(--accent); color: #fff;
    box-shadow: 0 8px 30px rgba(74,124,89,0.4);
    transform: translateY(-2px);
}
.email-icon-wrap {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
}
.email-icon-wrap svg { width: 20px; height: 20px; }
.contact-details { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.contact-chip {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px; border-radius: 100px;
    background: var(--surface); box-shadow: var(--neu-sm);
}
.chip-label { font-size: 10px; letter-spacing: .1em; color: var(--t3); font-weight: 700; }
.chip-value { font-size: 13px; font-weight: 600; color: var(--t2); }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
    border-top: 1px solid rgba(200,197,192,0.5);
    padding: 28px 0;
    background: var(--bg);
}
.footer .container { display: flex; justify-content: center; }
.footer-copy { font-size: 12px; color: var(--t3); }

/* ── Modal ──────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0; z-index: 5000;
    background: rgba(42,37,32,0.5);
    backdrop-filter: blur(16px);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.glass-modal {
    width: 100%; max-width: 860px; max-height: 90vh;
    background: rgba(240,237,232,0.9);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-bd);
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 60px rgba(42,37,32,0.2);
    overflow-y: auto; position: relative;
    transform: scale(0.96); transition: transform 0.3s;
    scrollbar-width: thin; scrollbar-color: #cbc8c3 transparent;
}
.modal-overlay.open .glass-modal { transform: scale(1); }
.modal-close {
    position: sticky; top: 16px; float: right;
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--surface); box-shadow: var(--neu-sm);
    border: 1px solid rgba(255,255,255,0.7);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    margin: 16px 16px 0 0; transition: all 0.2s; z-index: 10;
}
.modal-close svg { width: 14px; height: 14px; color: var(--t2); }
.modal-close:hover { background: var(--accent); }
.modal-close:hover svg { color: #fff; }
.modal-content { padding: 32px 40px 40px; clear: both; }
.modal-img-wrap {
    position: relative; margin-bottom: 28px;
}
.modal-img {
    width: 100%; border-radius: var(--radius);
    box-shadow: var(--neu); aspect-ratio: 16/9; object-fit: cover;
}
.modal-title { font-family: var(--font-head); font-size: 28px; font-weight: 800; color: var(--t1); margin-bottom: 6px; }
.modal-sub { font-size: 11px; letter-spacing: .2em; color: var(--t3); text-transform: uppercase; margin-bottom: 18px; }
.modal-overview { font-size: 15px; color: var(--t2); line-height: 1.8; margin-bottom: 28px; }
.modal-section-title {
    font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
    color: var(--accent); font-weight: 700; margin-bottom: 14px;
    padding-bottom: 8px; border-bottom: 1px solid var(--accent-b);
}
.modal-features {
    list-style: none; display: grid; grid-template-columns: 1fr 1fr;
    gap: 8px; margin-bottom: 28px;
}
.modal-features li {
    padding: 10px 16px; border-radius: 10px;
    background: var(--surface); box-shadow: var(--neu-sm);
    font-size: 12px; color: var(--t2); line-height: 1.5;
}
.modal-tech { display: flex; flex-wrap: wrap; gap: 8px; }

/* ── Reference Image Badge ───────────────────────────────────── */
.ref-badge {
    position: absolute; bottom: 8px; left: 8px; z-index: 5;
    font-size: 9px; font-weight: 700; letter-spacing: .1em;
    color: rgba(255,255,255,0.9);
    background: rgba(0,0,0,0.45);
    backdrop-filter: blur(6px);
    padding: 3px 10px; border-radius: 100px;
    pointer-events: none;
    white-space: nowrap;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    .project-card { grid-template-columns: 1fr; padding: 28px; gap: 28px; }
    .project-card:nth-child(even) .project-image-col { order: 0; }
    .project-card:nth-child(even) .project-content-col { order: 0; }
    .page-header { flex-direction: column; align-items: flex-start; }
    .page-header-right { width: 100%; }
    .intro-card { max-width: 360px; }
}
@media (max-width: 768px) {
    .nav-inner { padding: 12px 20px; }
    .nav-links { display: none; }
    .nav-menu-btn { display: flex; }
    .container { padding: 0 20px; }
    .section { padding: 60px 0; }
    .modal-features { grid-template-columns: 1fr; }
    .modal-content { padding: 20px 24px 32px; }
    .contact-glass { padding: 36px 24px; }
    .skills-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 12px; }
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #cbc8c3; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--t3); }