:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    
    --badge-newcomer: linear-gradient(135deg, #a8ff78 0%, #78ffd6 100%);
    --badge-researcher: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    --badge-scholar: linear-gradient(135deg, #fccb90 0%, #d57eeb 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background-color: var(--card-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.logo span {
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Main Content */
main {
    padding: 2rem 0;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--primary-color);
}

/* Badge Section */
.badge-section {
    margin-bottom: 3rem;
}

.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.badge-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    transition: transform 0.2s;
}

.badge-card:hover {
    transform: translateY(-2px);
}

.badge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.badge-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.points-tag {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.contract-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.holders-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8fafc;
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px dashed var(--border-color);
}

.holders-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.holders-count {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-main);
}

.contract-address {
    background: #f1f5f9;
    padding: 0.75rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.contract-address code {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
    word-break: break-all;
    color: var(--text-main);
}

.copy-btn {
    background: white;
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: all 0.2s;
    flex-shrink: 0;
}

.copy-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Badge Colors */
.badge-card.newcomer { border-top: 4px solid #10b981; }
.badge-card.researcher { border-top: 4px solid #3b82f6; }
.badge-card.scholar { border-top: 4px solid #8b5cf6; }

/* Chart Section */
.chart-section {
    margin-bottom: 3rem;
}

.chart-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    height: 400px;
    position: relative;
}

.chart-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    background-color: #fffbeb;
    color: #b45309;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid #fcd34d;
}




/* Footer */
.site-footer {
    background-color: var(--card-bg);
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

.author-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.author-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .badge-grid {
        grid-template-columns: 1fr;
    }
}