.ccv-tool-wrapper {
    background: #ffffff;
    border: 1px solid #eaeaea;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    font-family: system-ui, -apple-system, sans-serif;
}

.ccv-tool-header {
    margin-bottom: 20px;
}

.ccv-tool-header h3 {
    margin: 0 0 10px 0;
    font-size: 24px;
    color: #111;
}

.ccv-tool-header p {
    margin: 0;
    color: #666;
    font-size: 15px;
}

.ccv-textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.ccv-textarea:focus {
    border-color: #3b82f6; /* Đổi màu viền khi click vào */
}

.ccv-tool-results {
    display: flex;
    gap: 20px;
    margin-top: 25px;
}

.rt-stat-box {
    flex: 1;
    background: #f8fafc;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #f1f5f9;
}

.rt-stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 5px;
}

.rt-stat-label {
    display: block;
    font-size: 13px;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive cho điện thoại */
@media (max-width: 600px) {
    .ccv-tool-results {
        flex-direction: column;
        gap: 15px;
    }
}