.dca-simulator-container {
    max-width: 1200px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

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

.dca-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #2c3e50;
    background: linear-gradient(135deg, #3498db, #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dca-subtitle {
    font-size: 1.1rem;
    color: #7f8c8d;
    margin: 0;
}

.dca-simulator-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    border: 1px solid #e1e8ed;
}

.dca-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dca-form-group {
    display: flex;
    flex-direction: column;
}

.dca-form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #2c3e50;
    font-size: 0.95rem;
}

.dca-form-group input,
.dca-form-group select {
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
}

.dca-form-group input:focus,
.dca-form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.dca-calculate-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.dca-calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
}

.dca-calculate-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.dca-error {
    background: #fee;
    color: #c33;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid #e74c3c;
}

.dca-results {
    margin-top: 30px;
}

.dca-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dca-result-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.dca-result-card:hover {
    transform: translateY(-3px);
    border-color: #3498db;
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.15);
}

.dca-result-card h3 {
    font-size: 0.85rem;
    color: #6c757d;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.dca-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #2c3e50;
}

.dca-value.positive {
    color: #27ae60;
}

.dca-value.negative {
    color: #e74c3c;
}

.dca-chart-container {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    height: 400px;
    position: relative;
}

.dca-purchases-table {
    margin-top: 30px;
}

.dca-purchases-table h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.dca-table-wrapper {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid #e1e8ed;
}

.dca-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.dca-table th,
.dca-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e1e8ed;
}

.dca-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dca-table tbody tr:hover {
    background: #f8f9fa;
}

.dca-info-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 1px solid #e1e8ed;
}

.dca-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.dca-info-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.dca-info-card p,
.dca-info-card li {
    color: #555;
    margin-bottom: 10px;
}

.dca-info-card ul {
    padding-left: 20px;
}

/* Thème sombre */
.dca-simulator-container[data-theme="dark"] {
    background: #2c3e50;
    color: #ecf0f1;
}

.dca-simulator-container[data-theme="dark"] .dca-simulator-card,
.dca-simulator-container[data-theme="dark"] .dca-info-section {
    background: #34495e;
    border-color: #4a5f7a;
}

.dca-simulator-container[data-theme="dark"] .dca-form-group input,
.dca-simulator-container[data-theme="dark"] .dca-form-group select {
    background: #2c3e50;
    color: #ecf0f1;
    border-color: #4a5f7a;
}

/* Responsive */
@media (max-width: 768px) {
    .dca-title {
        font-size: 1.8rem;
    }
    
    .dca-form-grid {
        grid-template-columns: 1fr;
    }
    
    .dca-simulator-card {
        padding: 20px;
    }
    
    .dca-results-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .dca-chart-container {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .dca-simulator-container {
        padding: 10px;
    }
    
    .dca-value {
        font-size: 1.4rem;
    }
    
    .dca-results-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
}