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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1em;
    opacity: 0.95;
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.calculator-card, .results-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.calculator-card h2, .results-card h2 {
    color: #667eea;
    margin-bottom: 25px;
    font-size: 1.8em;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
    font-size: 1em;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.input-group input:focus, .input-group select:focus {
    outline: none;
    border-color: #667eea;
}

.input-info {
    font-size: 0.85em;
    color: #666;
    margin-top: 5px;
}

.calculate-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.calculate-btn:active {
    transform: translateY(0);
}

.result-item {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.result-item h3 {
    color: #667eea;
    font-size: 1em;
    margin-bottom: 8px;
}

.result-item .value {
    font-size: 1.8em;
    font-weight: 700;
    color: #333;
}

.result-breakdown {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.result-breakdown h3 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
}

.breakdown-row:last-child {
    border-bottom: none;
    font-weight: 700;
    color: #667eea;
    font-size: 1.1em;
}

.info-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.info-section h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 1.8em;
}

.info-section h3 {
    color: #764ba2;
    margin-top: 20px;
    margin-bottom: 10px;
}

.info-section ul {
    margin-left: 20px;
    line-height: 1.8;
    color: #555;
}

.info-section p {
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

    .header h1 {
        font-size: 1.8em;
    }

    .calculator-card, .results-card, .info-section {
        padding: 20px;
    }
}