/* Core Variables for Luxury Corporate Navy, Platinum & Glacial Blue Theme */
:root {
    --bg-base: #020512;
    --bg-navy-dark: #060b1a;
    --bg-card: rgba(10, 18, 38, 0.5);
    
    /* Platinum & Glacial Blue Colors */
    --platinum-solid: #cbd5e1;
    --platinum-light: #f8fafc;
    --platinum-accent: #94a3b8;
    --platinum-gradient: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 50%, #94a3b8 100%);
    
    /* Glacial Blue Accents */
    --glacial-solid: #38bdf8;
    --glacial-light: #7dd3fc;
    --glacial-accent: #0284c7;
    --glacial-glow: rgba(56, 189, 248, 0.06);
    
    /* Typography Colors */
    --text-pure: #ffffff;
    --text-soft: #f1f5f9;
    --text-muted: #94a3b8;
    --text-dark: #475569;
    
    /* Layout Details */
    --border-platinum: rgba(203, 213, 225, 0.1);
    --border-platinum-hover: rgba(56, 189, 248, 0.3);
    --border-white: rgba(255, 255, 255, 0.04);
    --transition-premium: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Setup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-base);
    color: var(--text-soft);
    font-family: 'Noto Sans JP', 'Montserrat', -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    line-height: 1.8;
}

/* Premium Visual Backdrop */
.ambient-glow {
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    opacity: 0.45;
    pointer-events: none;
}

.bg-left {
    top: -20%;
    left: -10%;
    background: radial-gradient(circle, #0a142c 0%, transparent 70%);
    animation: driftLeft 20s infinite alternate ease-in-out;
}

.bg-right {
    bottom: -20%;
    right: -10%;
    background: radial-gradient(circle, #050b18 0%, transparent 70%);
    animation: driftRight 20s infinite alternate ease-in-out;
}

.fine-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    z-index: -1;
    pointer-events: none;
}

@keyframes driftLeft {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 5%) scale(1.1); }
}

@keyframes driftRight {
    0% { transform: translate(0, 0) scale(1.1); }
    100% { transform: translate(-5%, -5%) scale(1); }
}

/* Header & Elegant Branding */
.header {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

/* Logo Wordmark Styling */
.logo {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.logo-main {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--text-pure);
    line-height: 1;
}

.logo-divider {
    width: 1px;
    height: 1.1rem;
    background-color: var(--platinum-solid);
    opacity: 0.35;
}

.logo-sub {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    line-height: 1;
}

/* Language Selection Pill */
.lang-selector {
    display: flex;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    padding: 2px;
    backdrop-filter: blur(8px);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.1rem;
    cursor: pointer;
    border-radius: 2px;
    transition: var(--transition-premium);
}

.lang-btn:hover {
    color: var(--text-pure);
}

.lang-btn.active {
    background: var(--platinum-gradient);
    color: #020512;
    font-weight: 600;
}

/* Main Area Container */
.main-content {
    flex: 1;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 5rem;
    align-items: center;
}

/* Hero Title block */
.hero-section {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    animation: fadeInDown 1.2s ease;
}

.badge {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.4em;
    color: var(--glacial-light);
    border: 1px solid var(--border-platinum);
    padding: 0.4rem 1.5rem;
    border-radius: 2px;
    background: var(--glacial-glow);
    display: inline-block;
}

.main-title {
    font-family: 'Cinzel', serif;
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    line-height: 1.3;
    background: linear-gradient(135deg, var(--text-pure) 40%, var(--glacial-solid) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 300;
    max-width: 580px;
    letter-spacing: 0.05em;
}

/* Registry Grid */
.registry-section {
    width: 100%;
    animation: fadeInUp 1.4s ease;
}

.registry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    width: 100%;
}

.registry-card {
    background: var(--bg-card);
    border: 1px solid var(--border-white);
    border-radius: 6px;
    padding: 2rem;
    display: flex;
    gap: 1.25rem;
    backdrop-filter: blur(15px);
    transition: var(--transition-premium);
    position: relative;
    overflow: hidden;
}

.registry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: var(--transition-premium);
}

.registry-card:hover {
    border-color: var(--border-platinum-hover);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 20px var(--glacial-glow);
}

.registry-card:hover::before {
    background: linear-gradient(90deg, var(--platinum-solid), var(--glacial-solid));
}

.registry-card.highlight {
    border: 1px solid var(--border-platinum);
    box-shadow: 0 10px 25px rgba(56, 189, 248, 0.02);
}

.registry-card.full-width {
    grid-column: span 2;
}

.card-icon {
    font-size: 1.35rem;
    color: var(--glacial-solid);
    margin-top: 0.2rem;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

.card-label {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 500;
}

.card-value {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-pure);
}

.address-text {
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.8;
}

.mono-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.15rem;
    letter-spacing: 0.08em;
}

/* Elegant verify button inside card */
.verify-button {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--glacial-solid);
    text-decoration: none;
    margin-top: 0.5rem;
    border-bottom: 1px solid var(--border-platinum);
    padding-bottom: 2px;
    transition: var(--transition-premium);
}

.verify-button:hover {
    color: var(--text-pure);
    border-color: var(--text-pure);
}

/* Contact Block */
.contact-section {
    width: 100%;
    max-width: 650px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    animation: fadeInUp 1.6s ease;
}

.contact-title {
    font-family: 'Cinzel', serif;
    font-size: 1.6rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--text-pure);
}

.contact-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 450px;
    line-height: 1.8;
}

.email-wrapper {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    padding: 1px;
    background: var(--border-platinum);
    transition: var(--transition-premium);
    margin-top: 1rem;
}

.email-wrapper:hover {
    background: linear-gradient(135deg, var(--platinum-solid) 0%, var(--glacial-solid) 100%);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15);
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--glacial-light);
    background: var(--bg-navy-dark);
    padding: 0.85rem 2.5rem;
    text-decoration: none;
    border-radius: 3px;
    transition: var(--transition-premium);
}

.email-link:hover {
    color: #020512;
    background: transparent;
}

/* Footer Section */
.footer {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-white);
    z-index: 10;
}

.footer p {
    font-size: 0.75rem;
    color: var(--text-dark);
    letter-spacing: 0.05em;
}

/* Animation Defs */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
/* Responsive Scaling */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem 1rem;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .logo {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.15rem;
    }
    
    .logo-divider {
        display: none;
    }
    
    .logo-main {
        order: 2;
        font-size: 1.1rem;
        letter-spacing: 0.25em;
    }
    
    .logo-sub {
        order: 1;
        font-size: 0.65rem;
        letter-spacing: 0.15em;
        color: var(--glacial-solid);
    }

    .main-title {
        font-size: 2rem;
        letter-spacing: 0.1em;
    }
    
    .registry-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .registry-card.full-width {
        grid-column: span 1;
    }
    
    .main-content {
        padding: 2.5rem 1rem;
        gap: 3.5rem;
    }
}