:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #2f81f7;
    --accent-glow: rgba(47, 129, 247, 0.4);
    --border: #30363d;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

main {
    flex: 1;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
    height: 100%;
    overflow: hidden;
}

.stats-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.section-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
}

.section-header h2 {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.stats-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid rgba(48, 54, 61, 0.4);
    transition: background 0.2s;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

.stat-rank {
    width: 24px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-variant-numeric: tabular-nums;
}

.stat-word {
    flex: 1;
    font-weight: 500;
    margin-left: 1rem;
    color: var(--text-primary);
}

.stat-count {
    background: rgba(47, 129, 247, 0.15);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    min-width: 40px;
    text-align: center;
}

.chat-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.message {
    line-height: 1.4;
    word-wrap: break-word;
    animation: fadeIn 0.3s ease-out;
}

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

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

.user-name {
    font-weight: 700;
    color: var(--accent);
    margin-right: 0.4rem;
}

.msg-content {
    color: var(--text-primary);
    opacity: 0.9;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #484f58;
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
}