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

:root {
    --primary-color: #E82127;
    --secondary-color: #393C41;
    --accent-color: #3E6AE1;
    --success-color: #00A67E;
    --warning-color: #FFB800;
    --background: #F4F4F4;
    --card-bg: #FFFFFF;
    --text-primary: #181B21;
    --text-secondary: #5C5E62;
    --border-color: #E4E4E4;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 16px;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

.calculator-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.update-banner {
    background: linear-gradient(135deg, #E82127, #E85A5F);
    color: white;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 30px;
    text-align: center;
}

.badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.form-section {
    margin-bottom: 30px;
}

.form-section h2 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.4em;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

input, select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.input-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

.input-prefix, .input-suffix {
    position: absolute;
    color: var(--text-secondary);
    pointer-events: none;
}

.input-prefix {
    left: 12px;
}

.input-suffix {
    right: 12px;
}

.input-wrapper input {
    padding-left: 25px;
}

.input-wrapper input:has(+ .input-suffix) {
    padding-right: 50px;
}

small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.calculate-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.calculate-btn:hover {
    background: #C41E1E;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(232, 33, 39, 0.3);
}

.results-section {
    animation: slideIn 0.5s ease;
}

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

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.result-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
}

.result-card h3 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.2em;
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item span {
    color: var(--text-secondary);
}

.result-item strong {
    color: var(--text-primary);
    font-size: 1.1em;
}

.highlight {
    background: rgba(232, 33, 39, 0.05);
    padding: 15px;
    border-radius: 8px;
    border: 2px solid var(--primary-color);
}

.highlight strong {
    color: var(--primary-color);
    font-size: 1.3em;
}

.comparison-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.comparison-table {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.comparison-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--background);
    border-radius: 8px;
}

.financing-options {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

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

.financing-card {
    text-align: center;
    padding: 20px;
    background: var(--background);
    border-radius: 8px;
}

.financing-card h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.financing-card p {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-bottom: 10px;
}

.financing-card strong {
    color: var(--primary-color);
    font-size: 1.2em;
}

.recalculate-btn {
    display: block;
    margin: 30px auto;
    padding: 12px 40px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.recalculate-btn:hover {
    background: #2C2F33;
}

.info-section {
    margin-top: 50px;
}

.info-section h2 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 30px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.info-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
}

.info-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.info-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

footer {
    margin-top: 50px;
    padding: 30px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9em;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }
    
    .container {
        padding: 10px;
    }
    
    .calculator-card {
        padding: 20px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}