/* General Body and Layout */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f7f6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #fff;
    padding: 1rem 0;
    border-bottom: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

header .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
    text-decoration: none;
}

header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: flex-end;
}

header nav ul li {
    margin-left: 20px;
}

header nav ul li a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
}

main {
    padding: 2rem 0;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #777;
    background-color: #e9ecef;
    margin-top: 2rem;
}

/* Buttons and Forms */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.btn-primary {
    background-color: #28a745;
    color: #fff;
    border: none;
}

.btn-primary:hover {
    background-color: #218838;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
    border: none;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-small {
    padding: 5px 10px;
    font-size: 0.8rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button[type="submit"] {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
    background-color: #0056b3;
}

/* Page-specific styles */
.hero {
    text-align: center;
    padding: 4rem 0;
    background-color: #d4edda;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    color: #155724;
}

.hero p {
    font-size: 1.2rem;
}

.features {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    text-align: center;
}

.feature-item {
    flex-basis: 30%;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.auth-form {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dashboard-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 2rem;
}

.diagnosis-list, .history-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.diagnosis-item, .history-item {
    display: flex;
    align-items: center;
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.diagnosis-thumbnail, .history-thumbnail {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 5px;
    margin-right: 15px;
}

.diagnosis-details, .history-details {
    flex-grow: 1;
}

.report-details {
    display: flex;
    gap: 20px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.report-details img {
    max-width: 50%;
    height: auto;
    border-radius: 8px;
}

.stat-card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.data-table th, .data-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

.data-table th {
    background-color: #f2f2f2;
}

.message {
    padding: 15px;
    margin-bottom: 1rem;
    border-radius: 5px;
    color: #fff;
}

.message.success {
    background-color: #28a745;
}

.message.error {
    background-color: #dc3545;
}