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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #000000;
    min-height: 100vh;
    padding: 20px;
    color: #ffffff;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: #1a1a1a;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(255, 255, 0, 0.3);
    overflow: hidden;
    border: 2px solid #ffff00;
}

header {
    background: #000000;
    color: #ffff00;
    padding: 30px;
    text-align: center;
    border-bottom: 3px solid #ffff00;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 300;
    text-shadow: 2px 2px 4px rgba(255, 255, 0, 0.5);
}

header .subtitle {
    font-size: 1.1em;
    opacity: 0.9;
    color: #ffffff;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 40px;
}

.input-section, .results-section {
    background: #2a2a2a;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(255, 255, 0, 0.2);
    border: 1px solid #444444;
}

h2 {
    color: #ffff00;
    margin-bottom: 25px;
    font-size: 1.5em;
    border-bottom: 3px solid #ffff00;
    padding-bottom: 10px;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #ffff00;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #444444;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    background: #1a1a1a;
    color: #ffffff;
}

.input-group input:focus, .input-group select:focus {
    outline: none;
    border-color: #ffff00;
    background: #2a2a2a;
}

.input-group small {
    display: block;
    margin-top: 5px;
    color: #cccccc;
    font-size: 0.85em;
}

.summary-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: #1a1a1a;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(255, 255, 0, 0.2);
    transition: transform 0.3s ease;
    border: 1px solid #444444;
}

.card:hover {
    transform: translateY(-5px);
    border-color: #ffff00;
}

.card h3 {
    color: #ffff00;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.card .value {
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 5px;
    color: #ffffff;
}

.card .sub-value {
    color: #cccccc;
    font-size: 0.9em;
}

.detailed-breakdown {
    background: #1a1a1a;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(255, 255, 0, 0.2);
    border: 1px solid #444444;
}

.detailed-breakdown h3 {
    color: #ffff00;
    margin-bottom: 20px;
}

.breakdown-table {
    width: 100%;
    border-collapse: collapse;
}

.breakdown-table td {
    padding: 12px;
    border-bottom: 1px solid #444444;
    color: #ffffff;
}

.breakdown-table .subtotal {
    font-weight: bold;
    background: #2a2a2a;
    color: #ffff00;
}

.breakdown-table .total {
    font-weight: bold;
    font-size: 1.1em;
    background: #333333;
    color: #ffff00;
}

.positive {
    color: #00ff00;
    font-weight: 600;
}

.negative {
    color: #ff4444;
    font-weight: 600;
}

.dscr-explanation {
    margin-top: 25px;
    padding: 20px;
    background: #2a2a2a;
    border-radius: 8px;
    border-left: 4px solid #ffff00;
}

.dscr-explanation h3 {
    color: #ffff00;
    margin-bottom: 10px;
}

.dscr-explanation p {
    color: #ffffff;
    line-height: 1.6;
}

/* CTA Button Styles */
.cta-button {
    display: inline-block;
    background: #ffff00;
    color: #000000;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    margin: 10px 0;
    transition: all 0.3s ease;
    border: 2px solid #ffff00;
}

.cta-button:hover {
    background: #000000;
    color: #ffff00;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 0, 0.4);
}

.faq-section {
    background: #2a2a2a;
    margin: 20px 0;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #444444;
}

.faq-section h3 {
    color: #ffff00;
    margin-bottom: 15px;
}

.faq-section h4 {
    color: #ffff00;
    margin: 15px 0 10px 0;
}

.faq-section p {
    color: #ffffff;
    line-height: 1.6;
    margin-bottom: 10px;
}


/* Mobile Optimization */
@media (max-width: 1024px) {
    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 30px;
    }
    
    .container {
        margin: 10px;
        border-radius: 15px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        margin: 5px;
        border-radius: 10px;
    }
    
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 1.8em;
        margin-bottom: 8px;
    }
    
    header .subtitle {
        font-size: 1em;
    }
    
    .calculator-grid {
        padding: 20px 15px;
        gap: 25px;
    }
    
    .input-section, .results-section {
        padding: 20px;
    }
    
    h2 {
        font-size: 1.3em;
        margin-bottom: 20px;
    }
    
    .input-group {
        margin-bottom: 15px;
    }
    
    .input-group label {
        font-size: 0.9em;
        margin-bottom: 6px;
    }
    
    .input-group input, .input-group select {
        padding: 10px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 20px;
    }
    
    .card {
        padding: 20px;
    }
    
    .card h3 {
        font-size: 1em;
        margin-bottom: 12px;
    }
    
    .card .value {
        font-size: 1.5em;
    }
    
    .detailed-breakdown {
        padding: 20px;
    }
    
    .breakdown-table td {
        padding: 10px;
        font-size: 0.9em;
    }
    
    .dscr-explanation {
        padding: 15px;
        margin-top: 20px;
    }
    
    .finance-cta {
        padding: 15px;
        margin: 15px 0;
    }
    
    .finance-cta h3 {
        font-size: 1.1em;
    }
    
    .cta-button {
        padding: 10px 20px;
        font-size: 0.9em;
        width: 100%;
        text-align: center;
        display: block;
        margin: 10px 0;
    }
    
    .faq-section {
        padding: 15px;
        margin: 15px 0;
    }
    
    .faq-section h3 {
        font-size: 1.2em;
    }
    
    .faq-section h4 {
        font-size: 1em;
        margin: 12px 0 8px 0;
    }
    
    .faq-section p {
        font-size: 0.85em;
        line-height: 1.5;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }
    
    .calculator-grid {
        padding: 15px 10px;
        gap: 20px;
    }
    
    .input-section, .results-section {
        padding: 15px;
    }
    
    .card {
        padding: 15px;
    }
    
    .card .value {
        font-size: 1.3em;
    }
    
    .breakdown-table td {
        padding: 8px;
        font-size: 0.85em;
    }
    
    .breakdown-table .total {
        font-size: 1em;
    }
}

/* Touch-friendly elements for mobile */
@media (hover: none) {
    .card:hover {
        transform: none;
    }
    
    .cta-button:active {
        transform: translateY(-1px);
    }
}

/* Ensure proper viewport scaling */
@viewport {
    width: device-width;
    zoom: 1.0;
}

/* Improve tap targets for mobile */
.input-group input, .input-group select, .cta-button {
    min-height: 44px; /* Minimum recommended touch target size */
}

/* Prevent horizontal scrolling */
.container, .calculator-grid, .faq-section {
    overflow-x: hidden;
}

/* Optimize form elements for mobile */
input, select, button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border-radius: 8px;
}

/* Improve readability on small screens */
@media (max-width: 768px) {
    .breakdown-table {
        font-size: 0.85em;
    }
    
    .dscr-explanation p {
        font-size: 0.9em;
    }
    
    .finance-cta p {
        font-size: 0.9em;
    }
}

/* Animation for value changes */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.value-updating {
    animation: pulse 0.3s ease-in-out;
}

/* DSCR Status Colors */
.dscr-excellent { color: #00ff00; }
.dscr-good { color: #88ff88; }
.dscr-acceptable { color: #ffff00; }
.dscr-poor { color: #ff8844; }
.dscr-critical { color: #ff4444; }

/* Finance Group CTA */
.finance-cta {
    background: #1a1a1a;
    border: 2px solid #ffff00;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    text-align: center;
}

.finance-cta h3 {
    color: #ffff00;
    margin-bottom: 15px;
}

.finance-cta p {
    color: #ffffff;
    margin-bottom: 15px;
}