:root {
    --color-bg: #FFFFFF;
    --color-text-main: #1A1A1A;
    --color-text-secondary: #666666;
    --color-accent: #D4AF37;
    /* Metallic Gold */
    --color-border: #E5E5E5;
    --color-off-white: #FAFAFA;

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography Utilities */
h1,
h2,
h3 {
    font-family: var(--font-heading);
    font-weight: 400;
    color: var(--color-text-main);
}

/* Header */
.site-header {
    padding: 2rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--color-off-white);
}

.logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    position: relative;
    text-align: center;
    padding-bottom: 3rem;
}

.hero-image-container {
    width: 100%;
    height: 60vh;
    overflow: hidden;
    background-color: var(--color-off-white);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-content {
    padding: 2rem 1.5rem 0;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.edition {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
}

/* Certificate Section */
.certificate-section {
    padding: 3rem 1.5rem;
    background-color: var(--color-bg);
}

.certificate-card {
    border: 1px solid var(--color-border);
    padding: 2.5rem 2rem;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* Decorative corner accents */
.certificate-card::before,
.certificate-card::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 1px solid var(--color-accent);
    transition: all 0.3s ease;
}

.certificate-card::before {
    top: 10px;
    left: 10px;
    border-right: none;
    border-bottom: none;
}

.certificate-card::after {
    bottom: 10px;
    right: 10px;
    border-left: none;
    border-top: none;
}

.cert-text {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.current-owner-display {
    margin-bottom: 3rem;
}

.current-owner-display .label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.current-owner-display h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-details {
    display: grid;
    gap: 1.5rem;
    text-align: left;
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.detail-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-weight: 500;
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 2rem;
    background-color: var(--color-bg);
}

.tab-btn {
    background: none;
    border: none;
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding-bottom: 0.5rem;
    position: relative;
    transition: color 0.3s ease;
}

.tab-btn:hover {
    color: var(--color-text-main);
}

.tab-btn.active {
    color: var(--color-text-main);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1.6rem;
    /* Align with container border */
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
}

/* Tab Content Visibility */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

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

/* Service Section */
.service-section {
    padding: 0 1.5rem 3rem;
    background-color: var(--color-bg);
}

.service-card {
    border: 1px solid var(--color-border);
    padding: 2rem;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-off-white);
}

.service-text {
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.service-tracker {
    background: #FFF;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.tracker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-slots {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.service-slot {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: var(--color-off-white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.service-slot.filled {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #FFF;
}

.service-note {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: 1rem;
}

/* Provenance Section */
.provenance-section {
    padding: 4rem 1.5rem;
    background-color: var(--color-off-white);
    max-width: 100%;
}

.provenance-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
    font-family: var(--font-heading);
    font-style: italic;
}

.timeline {
    max-width: 600px;
    margin: 0 auto;
    border-left: 1px solid var(--color-border);
    padding-left: 2rem;
    position: relative;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -2.35rem;
    /* Adjust based on padding/border */
    top: 0.25rem;
    width: 10px;
    height: 10px;
    background-color: var(--color-bg);
    border: 2px solid var(--color-accent);
    border-radius: 50%;
}

.timeline-date {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-action {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-details {
    font-size: 0.95rem;
    color: var(--color-text-main);
}

.timeline-location {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
    display: block;
}

/* Footer */
.site-footer {
    padding: 4rem 1.5rem;
    text-align: center;
    background-color: #111;
    color: #FFF;
}

.footer-note {
    font-size: 0.75rem;
    color: #666;
    margin-top: 1rem;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    .hero-section {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
        height: 80vh;
        padding-bottom: 0;
    }

    .hero-image-container {
        height: 100%;
        order: 2;
    }

    .hero-content {
        padding: 4rem;
        text-align: left;
        order: 1;
    }

    .hero-content h1 {
        font-size: 4rem;
    }
}