:root {
    --primary-dark: #0a1929;
    --primary-blue: #0144a8;
    --accent-blue: #1e88e5;
    --light-bg: #f5f7fa;
    --border-color: #d0d6dd;
    --text-dark: #1a1a1a;
    --text-muted: #666666;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    color: var(--text-dark);
}

.page-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a3a52 100%);
    color: white;
    padding: 30px 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.header-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    height: 50px;
    width: auto;
}

.page-header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 600;
}

table {
    margin: auto;
    border-collapse: collapse;
    width: 100%;
    max-width: 900px;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-radius: 6px;
    overflow: hidden;
}

th, td {
    border: 1px solid var(--border-color);
    padding: 12px;
    font-size: 14px;
    text-align: center;
}

th {
    background-color: var(--primary-blue);
    color: white;
    font-weight: 600;
}

tr:hover {
    background-color: #f9fbfc;
}

button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.upload-section {
    margin: 30px auto 20px;
    max-width: 900px;
    text-align: left;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.upload-section h3 {
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--primary-blue);
    font-size: 16px;
}

.upload-section p {
    margin: 8px 0;
    color: var(--text-muted);
    font-size: 14px;
}

.upload-section input[type="file"] {
    margin-top: 8px;
    margin-bottom: 12px;
}

.upload-status {
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-muted);
}

.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0;
    padding: 16px 20px;
    font-size: 20px;
    color: var(--primary-blue);
    border-bottom: 1px solid var(--border-color);
    background: white;
    width: 100%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.loading-indicator.hidden {
    display: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Data section */
div[style*="max-width: 900px"] {
    background: white;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

div[style*="max-width: 900px"] p {
    margin: 8px 0;
    font-size: 14px;
}

div[style*="max-width: 900px"] strong {
    color: var(--primary-blue);
}

span {
    color: var(--text-dark);
}