:root {
    --primary-color: #4a6fa5;
    --secondary-color: #166088;
    --accent-color: #4fc3f7;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f5f7fa;
    padding: 20px;
}

.calculator-container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.calculator-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 25px 30px;
    text-align: center;
}

.calculator-header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    margin-bottom: 5px;
}

.calculator-header p {
    font-size: 1rem;
    opacity: 0.9;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 25px;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 500;
    color: var(--secondary-color);
    font-size: 0.95rem;
}

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

.input-with-icon i {
    position: absolute;
    left: 12px;
    color: var(--primary-color);
}

.input-with-icon input,
.input-with-icon select {
    width: 100%;
    padding: 12px 15px 12px 35px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.input-with-icon input:focus,
.input-with-icon select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(79, 195, 247, 0.2);
}

input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: #e0e0e0;
    border-radius: 3px;
    margin-top: 8px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.dual-range {
    display: flex;
    align-items: center;
    gap: 10px;
}

.dual-range span {
    min-width: 40px;
    text-align: center;
    font-weight: 500;
    color: var(--primary-color);
}

.calculate-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 14px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.calculate-button:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.results-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.summary-card, .breakdown-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
}

.summary-card h2, .breakdown-card h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.summary-item.total {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--secondary-color);
    border-bottom: none;
    padding-top: 15px;
}

.breakdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.breakdown-item {
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: var(--border-radius);
}

.breakdown-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.breakdown-label {
    font-size: 0.85rem;
    color: #666;
}

.chart-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
    height: 250px;
}

.schedule-section {
    padding: 0 25px 25px;
}

.schedule-section h2 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.schedule-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.pagination-info {
    font-size: 0.9rem;
    color: #666;
}

.pagination-controls {
    display: flex;
    gap: 8px;
}

.pagination-controls button {
    background: var(--light-color);
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    transition: var(--transition);
}

.pagination-controls button:hover {
    background: var(--primary-color);
    color: white;
}

.pagination-controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--light-color);
    color: inherit;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    background: var(--primary-color);
    color: white;
    padding: 12px 8px;
    text-align: left;
}

td {
    padding: 10px 8px;
    border-bottom: 1px solid #eee;
}

tr:nth-child(even) {
    background-color: #f8f9fa;
}

tr:hover {
    background-color: #e9f5ff;
}

@media (max-width: 900px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .results-section {
        grid-row: 1;
    }
}

@media (max-width: 600px) {
    .breakdown-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-header h1 {
        font-size: 1.8rem;
    }
    
    .input-with-icon input,
    .input-with-icon select {
        padding: 10px 12px 10px 32px;
    }
}