:root {
    --primary-color: #10b981;
    --primary-hover-color: #059669;
    --text-color: #1f2937;
    --sub-text-color: #6b7280;
    --bg-color: #f3f4f6;
    --container-bg: #ffffff;
    --border-color: #d1d5db;
    --result-bg: #ecfdf5;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.main-wrapper {
    width: 100%;
    max-width: 650px;
}

.calculator-container {
    background: var(--container-bg);
    padding: 35px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.calculator-header {
    text-align: center;
    margin-bottom: 25px;
}

h1 {
    font-size: 26px;
    margin-bottom: 5px;
    color: var(--text-color);
    font-weight: 700;
}

.subtitle {
    font-size: 14px;
    color: var(--sub-text-color);
    margin: 0;
}

.form-group {
    margin-bottom: 18px;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-group.half {
    flex: 1;
}

.checkbox-row {
    margin-top: 10px;
    margin-bottom: 5px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-color);
}

input[type="number"], select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    box-sizing: border-box;
    font-family: 'Roboto', Arial, sans-serif;
    background-color: #fff;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.result-box {
    margin-top: 25px;
    background: var(--result-bg);
    padding: 18px 20px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.result-box h2 {
    font-size: 17px;
    margin-top: 0;
    margin-bottom: 12px;
    color: var(--primary-hover-color);
}

.result-item.netto {
    display: flex;
    justify-content: space-between;
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.result-item-details {
    border-top: 1px solid rgba(0,0,0,0.06);
    padding-top: 8px;
}

.result-item-details .small {
    font-size: 13px;
    color: var(--sub-text-color);
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

/* SEO Секция отдолу за Google */
.seo-content {
    background: #ffffff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
    font-size: 14px;
    line-height: 1.6;
}

.seo-content h2 {
    font-size: 20px;
    color: var(--text-color);
    margin-top: 0;
}

.seo-content h3 {
    font-size: 17px;
    color: var(--text-color);
    margin-top: 25px;
}

.faq-item h4 {
    margin-bottom: 5px;
    color: #374151;
}

.faq-item p {
    margin-top: 0;
    color: var(--sub-text-color);
}