:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: black;
    --text-muted: #424242;
    --border-color: #e2e8f0;
    --success-color: #10b981;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    padding: 2rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

header p {
    color: var(--text-muted);
}

.upload-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    margin-bottom: 2rem;
}

.file-input-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.file-input-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.file-input-group input[type="file"] {
    padding: 0.5rem;
    border: 1px dashed var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    cursor: pointer;
}

.file-input-group small {
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

button.btn-diagnostic {
    background-color: var(--warning-color);
}

button.btn-diagnostic:hover:not(:disabled) {
    background-color: var(--warning-color);
}

button:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

.hidden {
    display: none;
}

/* Styles du tableau de résultats */
.table-container {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-color);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

tr:last-child td {
    border-bottom: none;
}

.number-col {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.bold {
    font-weight: 600;
}

.summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    font-size: 1.25rem;
    font-weight: bold;
}

.total-price {
    color: var(--success-color);
    font-size: 1.5rem;
}

.about-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    margin-top: 2rem;
}

.about-section h2 {
    margin-bottom: 1rem;
}

.about-section p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.about-section p:last-child {
    margin-bottom: 0;
}

.about-section a {
    color: var(--primary-color);
    font-weight: 600;
}

.about-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}