* {
    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%);
    min-height: 100vh;
    padding: 20px;
}

.calculator-container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 30px;
    backdrop-filter: blur(10px);
}

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

.header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.header p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

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

.input-section {
    background: #ffffff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1rem;
}

.input-wrapper {
    position: relative;
}

.input-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e0e6ed;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.currency-symbol {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #667eea;
    font-weight: 600;
    font-size: 1rem;
}

.currency-input {
    padding-left: 40px !important;
}

.percent-symbol {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #667eea;
    font-weight: 600;
    font-size: 1rem;
}

.percent-input {
    padding-right: 40px !important;
}

.calculate-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.results-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.results-section h3 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 700;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(5px);
}

.result-item:last-child {
    margin-bottom: 0;
    background: rgba(255, 255, 255, 0.2);
    font-weight: 700;
    font-size: 1.1rem;
}

.result-label {
    font-weight: 500;
}

.result-value {
    font-weight: 700;
    font-size: 1.2rem;
}

.breakdown-section {
    grid-column: 1 / -1;
    background: #ffffff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    margin-top: 20px;
}

.breakdown-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

.breakdown-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.breakdown-item {
    text-align: center;
    padding: 20px;
    border: 2px solid #e0e6ed;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.breakdown-item:hover {
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.breakdown-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.breakdown-label {
    color: #7f8c8d;
    font-weight: 500;
}

.error {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
}

.loading {
    opacity: 0.7;
    pointer-events: none;
}

@media (max-width: 768px) {
    .calculator-container {
        padding: 20px;
        margin: 10px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .breakdown-grid {
        grid-template-columns: 1fr;
    }

    .input-section,
    .results-section {
        padding: 20px;
    }

    .result-item {
        flex-direction: column;
        text-align: center;
        gap: 5px;
    }

    .result-value {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .calculator-container {
        padding: 15px;
        margin: 5px;
    }

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

    .input-section,
    .results-section,
    .breakdown-section {
        padding: 15px;
    }
}

/* Animation for results */
.result-fade-in {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tooltip styles */
.tooltip {
    position: relative;
    display: inline-block;
    cursor: help;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.9rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}