/* Calculator Common Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-green: #10b981;
    --primary-green-dark: #059669;
    --secondary-green: #d1fae5;
    --neutral-dark: #1f2937;
    --neutral-gray: #6b7280;
    --neutral-light: #f3f4f6;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--neutral-dark);
    line-height: 1.6;
    background: var(--neutral-light);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--neutral-dark);
    text-decoration: none;
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: var(--primary-green);
    color: var(--white);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.back-link:hover {
    background: var(--primary-green-dark);
    transform: translateY(-2px);
}

/* Calculator Page */
.calculator-page {
    padding: 100px 0 60px;
    min-height: 100vh;
}

.calculator-header {
    text-align: center;
    margin-bottom: 3rem;
}

.calculator-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--neutral-dark);
}

.calculator-subtitle {
    font-size: 1.125rem;
    color: var(--neutral-gray);
    max-width: 600px;
    margin: 0 auto;
}

.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

/* Input Section */
.calculator-inputs {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px var(--shadow);
}

.input-group {
    margin-bottom: 2rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--neutral-dark);
    font-size: 1rem;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all 0.3s ease;
    background: var(--white);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px var(--secondary-green);
}

.input-suffix {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--neutral-gray);
    font-weight: 500;
    pointer-events: none;
}

.range-slider {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: linear-gradient(to right, var(--primary-green) 0%, var(--primary-green) 50%, #e5e7eb 50%, #e5e7eb 100%);
    outline: none;
    -webkit-appearance: none;
    margin-top: 0.5rem;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-green);
    cursor: pointer;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s ease;
}

.range-slider::-webkit-slider-thumb:hover {
    background: var(--primary-green-dark);
    transform: scale(1.1);
}

.range-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-green);
    cursor: pointer;
    box-shadow: 0 2px 10px var(--shadow);
    border: none;
    transition: all 0.3s ease;
}

.range-slider::-moz-range-thumb:hover {
    background: var(--primary-green-dark);
    transform: scale(1.1);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--neutral-gray);
    margin-top: 0.5rem;
}

.calculate-btn {
    width: 100%;
    padding: 1.125rem;
    background: var(--primary-green);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.calculate-btn:hover {
    background: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--shadow-lg);
}

/* Results Section */
.calculator-results {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.result-card {
    background: linear-gradient(135deg, var(--secondary-green) 0%, #d1fae580 100%);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.result-label {
    font-size: 1rem;
    color: var(--neutral-gray);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green-dark);
    margin-bottom: 0.5rem;
}

.result-subtext {
    font-size: 0.9rem;
    color: var(--neutral-gray);
}

.result-breakdown {
    background: var(--neutral-light);
    padding: 1.5rem;
    border-radius: 12px;
}

.result-breakdown h3 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--neutral-dark);
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 0.875rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.breakdown-row:last-child {
    border-bottom: none;
}

.breakdown-label {
    color: var(--neutral-gray);
    font-weight: 500;
}

.breakdown-value {
    color: var(--neutral-dark);
    font-weight: 600;
}

.breakdown-row.total {
    border-top: 2px solid var(--primary-green);
    padding-top: 1rem;
    margin-top: 0.5rem;
}

.breakdown-row.total .breakdown-label,
.breakdown-row.total .breakdown-value {
    color: var(--primary-green-dark);
    font-size: 1.125rem;
}

/* Chart Placeholder */
.chart-container {
    background: var(--neutral-light);
    padding: 2rem;
    border-radius: 12px;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-placeholder {
    text-align: center;
    color: var(--neutral-gray);
}

.pie-chart {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto 1rem;
}

/* Info Section */
.calculator-info {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-top: 3rem;
}

.calculator-info h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--neutral-dark);
}

.calculator-info h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--neutral-dark);
}

.calculator-info p {
    color: var(--neutral-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.calculator-info ul {
    list-style: none;
    padding-left: 0;
}

.calculator-info li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--neutral-gray);
    line-height: 1.7;
}

.calculator-info li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

/* Responsive Design */
@media (max-width: 968px) {
    .calculator-container {
        grid-template-columns: 1fr;
    }

    .calculator-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .calculator-page {
        padding: 80px 0 40px;
    }

    .calculator-title {
        font-size: 1.75rem;
    }

    .calculator-inputs,
    .calculator-results,
    .calculator-info {
        padding: 1.5rem;
    }

    .result-value {
        font-size: 2rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .calculator-title {
        font-size: 1.5rem;
    }

    .calculator-subtitle {
        font-size: 1rem;
    }

    .result-value {
        font-size: 1.75rem;
    }
}