:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --border: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 30px;
    margin-top: 20px;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(to right, #38bdf8, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

p {
    color: var(--text-secondary);
    font-size: 14px;
}

.leaderboard-container {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 10px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
    padding: 15px 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border);
}

.text-right {
    text-align: right;
}

td {
    padding: 15px 10px;
    vertical-align: middle;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

tr:last-child td {
    border-bottom: none;
}

.user-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 16px;
}

.username {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
}

.rank {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 14px;
    width: 20px;
    text-align: center;
}

.rank-1 { color: #fbbf24; text-shadow: 0 0 10px rgba(251, 191, 36, 0.3); }
.rank-2 { color: #94a3b8; }
.rank-3 { color: #b45309; }

.count-val {
    font-weight: 700;
    color: var(--text-primary);
}

.spent-val {
    color: var(--text-secondary);
    font-size: 13px;
}

/* Loading Spinner */
.loading {
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.hidden {
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}