:root {
    --dark-bg: #0d0d0d;
    --card-bg: #0d0d0d;
    --title-accent: #32d92e;
    --text-primary: #ffffff;
    --text-muted: #a0a0a0;
    --border: #2d2d2d;
    --avatar-border: #2d2d2d;
}

[data-theme="light"] {
    --dark-bg: #ffffff;
    --card-bg: #f8f9fa;
    --title-accent: #32d92e;
    --text-primary: #0d0d0d;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --avatar-border: #d8dde6;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
}

.top-buyers-page { padding: 8.4rem 0 3.5rem; }
.top-buyers-shell { max-width: 560px; margin: 0 auto; }
.top-buyers-header { text-align: left; margin-bottom: 1.8rem; padding: 0 0.25rem; }

.top-buyers-header h1 {
    font-size: clamp(1.8rem, 4.2vw, 2.35rem);
    font-weight: 800;
    margin: 0;
    line-height: 1.08;
    letter-spacing: -0.02em;
}

.top-buyers-header .highlight { color: var(--title-accent); }
.top-buyers-header p { color: var(--text-muted); margin: 0.75rem 0 0; font-size: 0.78rem; }
.top20-buyers-grid { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }

.top20-buyer-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 0.85rem 1.05rem;
    display: grid;
    grid-template-columns: 64px 1fr;
    align-items: center;
    min-height: 104px;
    box-shadow: none;
    position: relative;
    overflow: hidden;
}

.top20-buyer-card::before {
    content: "";
    position: absolute;
    left: 0; top: 14px; bottom: 14px;
    width: 3px;
    border-radius: 2px;
    background: var(--title-accent);
    opacity: 0.18;
}

.top20-buyer-card.is-rank-1::before { opacity: 0.7; }
.top20-buyer-card.is-rank-2::before { opacity: 0.5; }
.top20-buyer-card.is-rank-3::before { opacity: 0.35; }

.top20-buyer-rank-badge {
    width: 52px;
    height: 66px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(50, 217, 46, 0.06);
}

.top20-buyer-rank-label {
    font-size: 0.52rem;
    line-height: 1;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.top20-buyer-rank-value {
    color: var(--title-accent);
    font-weight: 800;
    font-size: 1.02rem;
    line-height: 1;
}

.top20-buyer-rank-badge.is-rank-1 {
    background: rgba(50, 217, 46, 0.16);
    border-color: rgba(50, 217, 46, 0.35);
}
.top20-buyer-rank-badge.is-rank-2 {
    background: rgba(50, 217, 46, 0.1);
    border-color: rgba(50, 217, 46, 0.25);
}
.top20-buyer-rank-badge.is-rank-3 {
    background: rgba(50, 217, 46, 0.08);
    border-color: rgba(50, 217, 46, 0.2);
}

.top20-buyer-user {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.top20-buyer-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--avatar-border);
    flex-shrink: 0;
    background: var(--dark-bg);
}

.top20-buyer-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.top20-buyer-avatar-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.3rem;
}

.top20-buyer-info { min-width: 0; }

.top20-buyer-name {
    font-weight: 600;
    font-size: clamp(0.98rem, 1.8vw, 1.2rem);
    line-height: 1.15;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.top20-buyer-purchases {
    color: var(--title-accent);
    font-size: clamp(0.78rem, 1.3vw, 0.98rem);
    margin-top: 0.25rem;
    font-weight: 500;
    line-height: 1.2;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 1rem 0 0;
    font-size: 1rem;
}

@media (max-width: 768px) {
    .top-buyers-page { padding-top: 7.1rem; }
    .top-buyers-shell { max-width: 100%; }
    .top20-buyer-card {
        grid-template-columns: 58px 1fr;
        min-height: 94px;
        padding: 0.75rem 0.85rem;
    }
    .top20-buyer-rank-badge {
        width: 46px;
        height: 58px;
    }
    .top20-buyer-rank-value { font-size: 0.9rem; }
    .top20-buyer-avatar { width: 58px; height: 58px; }
}