* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --bg-color: #f5f5f5;
    --container-bg: #fff;
    --text-color: #333;
    --heading-color: #2c3e50;
    --border-color: #eee;
    --button-bg: #3498db;
    --button-hover: #2980b9;
    --details-bg: #f9f9f9;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --bg-color: #1a1a1a;
    --container-bg: #2c2c2c;
    --text-color: #f5f5f5;
    --heading-color: #6ab0de;
    --border-color: #444;
    --button-bg: #3498db;
    --button-hover: #2980b9;
    --details-bg: #383838;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;    
    border-radius: 8px;    
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--heading-color);
    font-size: 24px;
}

h2 {
    color: var(--heading-color);
    margin: 10px 0;
    font-size: 18px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 5px;
}

.main-content {
    display: flex;
    flex: 1;
    gap: 20px;
    margin-bottom: 20px;
}

.input-section, .results-section {
    flex: 1;
    padding: 15px;
    border-radius: 8px;
    background-color: var(--container-bg);
    box-shadow: 0 0 10px var(--shadow-color);
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    background-color: var(--container-bg);
    color: var(--text-color);
}

button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: var(--button-bg);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    margin-top: 15px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--button-hover);
}

.results-grid {
    display: flex;
    gap: 20px;
}

.result-column {
    flex: 1;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.total {
    font-weight: bold;
    font-size: 16px;
    margin-top: 5px;
    border-top: 2px solid var(--border-color);
    padding-top: 5px;
}

.result-label {
    font-weight: 500;
}

.result-value {
    font-weight: 600;
}

.details-section {
    margin-top: 20px;
    padding: 10px;
    border-radius: 8px;
    background-color: var(--details-bg);
}

.details-section h3 {
    color: var(--heading-color);
    font-size: 14px;
    margin-bottom: 10px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

#detailsCalcul {
    padding: 5px;
    font-size: 13px;
    line-height: 1.4;
    max-height: 25vh;
    overflow-y: auto;
}

.tax-brackets-indicator {
    margin-top: 20px;
    padding: 10px;
    background-color: var(--container-bg);
    border-radius: 8px;
    box-shadow: 0 0 5px var(--shadow-color);
}

.tax-brackets-indicator h3 {
    color: var(--heading-color);
    font-size: 14px;
    margin-bottom: 10px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.bracket-header {
    font-weight: bold;
    margin-bottom: 8px;
    padding: 4px;
    background-color: var(--details-bg);
    border-radius: 4px;
    text-align: center;
    font-size: 13px;
}

.bracket-item {
    margin-bottom: 5px;
    padding: 4px;
    border-radius: 4px;
    font-size: 12px;
    transition: all 0.3s ease;
}

.bracket-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bracket-rate {
    font-weight: bold;
    font-size: 13px;
}

.bracket-range {
    font-size: 11px;
    color: var(--text-color);
    opacity: 0.8;
}

.bracket-status {
    font-size: 12px;
    color: #2c3e50;
    margin-left: 5px;
}

.dark-mode .bracket-status {
    color: #ddd;
}

.bracket-summary {
    margin-top: 8px;
    padding: 6px;
    background-color: var(--details-bg);
    border-radius: 4px;
    text-align: center;
    font-size: 12px;
}

.bracket-25 {
    background-color: rgba(76, 175, 80, 0.2);
    border-left: 4px solid #4CAF50;
}

.bracket-25.active {
    background-color: rgba(76, 175, 80, 0.4);
    font-weight: bold;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
}

.bracket-40 {
    background-color: rgba(255, 193, 7, 0.2);
    border-left: 4px solid #FFC107;
}

.bracket-40.active {
    background-color: rgba(255, 193, 7, 0.4);
    font-weight: bold;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
}

.bracket-45 {
    background-color: rgba(255, 152, 0, 0.2);
    border-left: 4px solid #FF9800;
}

.bracket-45.active {
    background-color: rgba(255, 152, 0, 0.4);
    font-weight: bold;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
}

.bracket-50 {
    background-color: rgba(244, 67, 54, 0.2);
    border-left: 4px solid #F44336;
}

.bracket-50.active {
    background-color: rgba(244, 67, 54, 0.4);
    font-weight: bold;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
}

.mini-chart-container, .chart-container {
    display: none;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
}

#themeToggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background-color: var(--button-bg);
    color: white;
    cursor: pointer;
    transition: transform 0.3s ease;
}

#themeToggle:hover {
    transform: rotate(30deg);
}

/* Styles pour la section des échéances de paiement */
.payment-schedule {
    margin-top: 20px;
    padding: 10px;
    border-radius: 8px;
    background-color: var(--details-bg);
}

.payment-schedule h3 {
    color: var(--heading-color);
    font-size: 14px;
    margin-bottom: 10px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.payment-tabs {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.payment-tab {
    flex: 1;
    padding: 6px 10px;
    background-color: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    text-align: center;
    transition: all 0.3s ease;
    margin: 0 2px;
}

.payment-tab:hover {
    background-color: var(--hover-color);
}

.payment-tab.active {
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
}

.payment-panel {
    display: none;
    font-size: 12px;
    line-height: 1.4;
}

.payment-panel.active {
    display: block;
}

.payment-panel p {
    margin: 5px 0;
}

.payment-panel ul {
    margin: 5px 0;
    padding-left: 20px;
}

.payment-panel li {
    margin-bottom: 3px;
}

.payment-note {
    font-style: italic;
    color: var(--text-muted);
    margin-top: 8px;
    font-size: 11px;
}

/* Styles pour le taux marginal */
.marginal-rate-indicator {
    background-color: var(--primary-color);
    color: black;
    padding: 8px;
    border-radius: 6px;
    margin: 10px 0;
    text-align: center;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dark-mode .marginal-rate-indicator {
    color: white;
}

.marginal-rate-label {
    font-size: 13px;
}

.marginal-rate-value {
    font-size: 16px;
    background-color: rgba(255, 255, 255, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
}

.bracket-item.marginal {
    border-left: 3px solid var(--primary-color);
    position: relative;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    transform: scale(1.05);
    z-index: 1;
    transition: all 0.3s ease;
}

.marginal-indicator {
    position: absolute;
    right: 5px;
    top: -5px;
    background-color: var(--primary-color);
    color: black;
    font-size: 9px;
    padding: 2px 4px;
    border-radius: 3px;
    white-space: nowrap;
    font-weight: bold;
}

.dark-mode .marginal-indicator {
    color: white;
}

/* Renforcement des couleurs pour les tranches actives */
.bracket-25.active.marginal {
    background-color: rgba(76, 175, 80, 0.7);
}

.bracket-40.active.marginal {
    background-color: rgba(255, 193, 7, 0.7);
}

.bracket-45.active.marginal {
    background-color: rgba(255, 152, 0, 0.7);
}

.bracket-50.active.marginal {
    background-color: rgba(244, 67, 54, 0.7);
}

@media (max-width: 768px) {
    .container {
        height: auto;
        margin: 10px;
        padding: 15px;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .results-grid {
        flex-direction: column;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .details-section {
        max-height: none;
    }
    
    .details-flex {
        flex-direction: column;
    }
    
    .tax-brackets-indicator {
        flex: 0 0 auto;
        margin-top: 10px;
        max-height: none;
    }
    
    #detailsCalcul {
        max-height: none;
    }
}