/* ==========================================================================
   TOCHKA Exhibition Website: Migration of Memories
   Design Worldview: Blueprint / Millimeter Grid Paper & Technical CAD DTP Style
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
    --bg-paper: #f7f9fa;
    --grid-line-major: rgba(0, 50, 100, 0.08);
    --grid-line-minor: rgba(0, 50, 100, 0.03);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #64748b;
    --accent-blue: #2563eb;
    --accent-cyan: #06b6d4;
    --accent-purple: #6c5ce7;
    --accent-purple-light: #8c7ae6;
    --accent-neon-yellow: #facc15;
    --accent-neon-red: #f43f5e;
    --border-color: #cbd5e1;
    --border-dark: #0f172a;
    --font-mono: 'Share Tech Mono', monospace;
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --container-max-width: 1100px;
}

/* Base Reset & Grid Background */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-paper);
    background-image: 
        linear-gradient(to right, var(--grid-line-major) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line-major) 1px, transparent 1px),
        linear-gradient(to right, var(--grid-line-minor) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line-minor) 1px, transparent 1px);
    background-size: 25px 25px, 25px 25px, 5px 5px, 5px 5px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: var(--accent-cyan);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Utility Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.mono-font {
    font-family: var(--font-mono);
}

/* Header & Navigation */
.header-bar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(247, 249, 250, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo-group {
    display: flex;
    flex-direction: column;
}

.site-logo-artist {
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.site-logo-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
    list-style: none;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-purple);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.btn-cta {
    display: inline-block;
    background-color: var(--accent-purple);
    color: #ffffff !important;
    font-family: var(--font-mono);
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 2px;
    border: 1px solid var(--accent-purple-light);
    box-shadow: 0 2px 4px rgba(108, 92, 231, 0.2);
    transition: all 0.25s ease;
}

.btn-cta:hover {
    background-color: #5b4cc4;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(108, 92, 231, 0.35);
}

/* Hero Section */
.hero-section {
    padding: 40px 0 60px;
    border-bottom: 1px solid var(--border-color);
}

.hero-meta {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--border-color);
}

.hero-artists {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.hero-title-main {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: 4px;
    margin-bottom: 4px;
}

.hero-title-sub {
    font-size: 1.4rem;
    color: var(--accent-blue);
    letter-spacing: 2px;
}

/* Hero Frame & Visual */
.hero-visual-container {
    position: relative;
    margin: 25px 0;
    border: 2px solid var(--border-dark);
    background: #000;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.hero-visual-img {
    width: 100%;
    max-height: 620px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.hero-visual-container:hover .hero-visual-img {
    transform: scale(1.015);
}

.hero-info-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-top: 25px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-color);
    padding: 24px;
}

.info-block-item {
    margin-bottom: 12px;
}

.info-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    display: block;
}

.info-value-main {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.info-value-eng {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.badge-free {
    display: inline-block;
    background-color: var(--accent-neon-yellow);
    color: #000000;
    font-weight: 700;
    padding: 4px 12px;
    font-size: 0.9rem;
    border: 1px solid #d97706;
    margin-top: 8px;
}

/* Concept Section */
.section-padding {
    padding: 70px 0;
}

.section-banner-purple {
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-light));
    color: #ffffff;
    padding: 14px 24px;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    border-radius: 2px;
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.25);
}

.section-title-ja {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 25px;
    line-height: 1.4;
}

.concept-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    padding: 35px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.concept-text-ja {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.concept-text-eng {
    font-size: 0.98rem;
    line-height: 1.7;
    color: var(--text-secondary);
    border-top: 1px dashed var(--border-color);
    padding-top: 20px;
}

/* Exhibits & Programs Grid */
.exhibits-container {
    margin-top: 40px;
}

.section-header-tag {
    font-family: var(--font-mono);
    color: var(--accent-blue);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.exhibits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.exhibit-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.exhibit-card:hover {
    border-color: var(--accent-purple);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.15);
}

.exhibit-img-wrap {
    height: 220px;
    overflow: hidden;
    background: #000;
}

.exhibit-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.exhibit-card:hover .exhibit-img {
    transform: scale(1.05);
}

.exhibit-content {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.exhibit-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.exhibit-desc-ja {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.exhibit-desc-eng {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Main Mid Visual Banner */
.mid-banner-container {
    margin: 50px 0;
    border: 2px solid var(--border-dark);
    overflow: hidden;
    background: #000;
}

.mid-banner-img {
    width: 100%;
    max-height: 520px;
    object-fit: cover;
}

/* Workshop Program Section */
.workshop-section {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    padding: 40px;
    margin-top: 50px;
    position: relative;
}

.workshop-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    align-items: center;
}

.workshop-date-badge {
    display: inline-block;
    background: var(--accent-neon-red);
    color: #ffffff;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 4px 14px;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.workshop-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.workshop-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.qr-box {
    text-align: center;
    padding: 20px;
    background: var(--bg-paper);
    border: 1px dashed var(--border-color);
}

.qr-img {
    width: 130px;
    height: 130px;
    margin: 0 auto 10px;
}

.qr-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Gallery Strip */
.gallery-strip-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 30px 0;
}

.gallery-item {
    height: 160px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #000;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.08);
}

/* Artist Profile Section */
.profile-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 35px;
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 30px;
    align-items: start;
    margin-top: 30px;
}

.profile-img-wrap {
    width: 100%;
    border: 1px solid var(--border-color);
}

.profile-name-ja {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.profile-name-eng {
    font-size: 0.95rem;
    color: var(--accent-blue);
    margin-bottom: 15px;
}

.profile-bio {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Access & Info Section */
.access-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
}

.access-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    padding: 30px;
}

.access-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent-purple);
    padding-bottom: 8px;
}

.access-list {
    list-style: none;
}

.access-list-item {
    margin-bottom: 12px;
    font-size: 0.98rem;
    display: flex;
    gap: 10px;
}

.access-list-label {
    font-family: var(--font-mono);
    color: var(--text-light);
    min-width: 80px;
}

/* Footer & Credits */
.footer-section {
    background: #0f172a;
    color: #f8fafc;
    padding: 60px 0 30px;
    margin-top: 80px;
    border-top: 3px solid var(--accent-purple);
}

.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.credit-item-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #94a3b8;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.credit-item-value {
    font-size: 1rem;
    color: #ffffff;
    font-weight: 500;
}

.footer-logo-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid #334155;
}

.footer-kao-logo {
    height: 38px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #64748b;
}

/* Responsive Media Queries */
@media (max-width: 900px) {
    .hero-title-main {
        font-size: 2.2rem;
    }
    
    .hero-info-grid, .workshop-grid, .access-grid {
        grid-template-columns: 1fr;
    }

    .profile-card {
        grid-template-columns: 1fr;
    }

    .profile-img-wrap {
        max-width: 200px;
    }
}

@media (max-width: 600px) {
    .nav-menu {
        display: none; /* Mobile menu can be toggled */
    }

    .hero-title-main {
        font-size: 1.7rem;
    }

    .section-banner-purple {
        font-size: 1rem;
    }

    .footer-logo-row {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}