/* Thème sombre */
:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent-primary: #2196F3;
    --accent-secondary: #FFC107;
    --border-color: #404040;
    --hover-bg: #353535;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-title {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.nav-link:hover {
    background-color: var(--hover-bg);
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.container {
    width: 100%;
}

h2, h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

.user-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
}

.user-selector label {
    font-weight: 500;
}

.user-info {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.user-info p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.form {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.input, .select-input {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
}

.input:focus, .select-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background-color: #1976D2;
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--hover-bg);
}

.add-weight-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.batch-import-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.help-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

.example-text {
    background-color: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin: 0.5rem 0;
    white-space: pre-wrap;
    border: 1px solid var(--border-color);
}

textarea.input {
    font-family: 'Courier New', monospace;
    resize: vertical;
    min-height: 150px;
}

.import-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
}

.import-result .success {
    color: #4caf50;
    font-weight: 500;
}

.import-result .error {
    color: #f44336;
    font-weight: 500;
}

.import-result .warning {
    color: #ff9800;
    font-weight: 500;
}

.import-result ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.import-result li {
    margin: 0.25rem 0;
}

.chart-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.chart-container {
    margin-bottom: 2rem;
}

.chart-container h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.chart-container canvas {
    max-height: 400px;
}

.month-selector {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.month-selector h2 {
    margin: 0;
    font-size: 1.5rem;
}

.stats-box {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
}

#weight-chart {
    max-height: 400px;
    margin-top: 1rem;
}

.table-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th {
    background-color: var(--bg-tertiary);
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.data-table tr:hover {
    background-color: var(--hover-bg);
}

.user-form-section {
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .user-selector {
        flex-direction: column;
        align-items: stretch;
    }
    
    .month-selector {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-box {
        flex-direction: column;
    }
}