:root {
    --primary: #2e3fb1;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
}

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

.calc-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.calc-form .form-group { margin-bottom: 16px; }

.calc-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-main);
}

.calc-form input,
.calc-form select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.calc-form input:focus { outline: none; border-color: var(--primary); }

.calc-result {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid #fcd34d;
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.calc-result .result-value { font-size: 2rem; font-weight: 700; color: #92400e; }
.calc-result .result-label { font-size: 0.9rem; color: var(--text-muted); margin-top: 8px; }

.calc-info { font-size: 0.85rem; color: var(--text-muted); margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-color); }