:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --background-noise: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIj48ZmlsdGVyIGlkPSJub2lzZSI+PGZlVHVyYnVsZW5jZSB0eXBlPSJmcmFjdGFsTm9pc2UiIGJhc2VGcmVxdWVuY3k9IjAuOCIgbnVtT2N0YXZlcz0iMyIgc3RpdGNoVGlsZXM9InN0aXRjaCIvPjwvZmlsdGVyPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbHRlcj0idXJsKCNub2lzZSkiIG9wYWNpdHk9IjAuMCIvPjwvc3ZnPg==');
}

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

header {
    background-color: white;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 a {
    text-decoration: none;
    margin: 0;
    color: var(--primary-color);
    font-size: 2rem;
}

header nav a {
    margin-left: 20px;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
}

header nav a:hover {
    color: var(--primary-color);
}

.login-btn, .logout-btn {
    background-color: var(--primary-color);
    color: white !important;
    padding: 10px 20px;
    border-radius: 5px;
    transition: background-color 0.3s;
    cursor: pointer;
}

.login-btn:hover, .logout-btn:hover {
    background-color: #0056b3;
}

.hidden {
    display: none;
}

main {
    padding: 20px;
}

#hero {
    position: relative;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 40px;
    color: white;
    overflow: hidden;
}

#hero-image-container {
    width: 100%;
    height: 500px;
}

#hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

#hero-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#hero h2 {
    margin: 0;
    font-size: 3rem;
}

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

#services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

#reviews {
    text-align: center;
    padding: 40px 20px;
    background-color: white;
    border-radius: 8px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

#reviews h2 {
    margin-bottom: 40px;
    font-size: 2rem;
}

.review-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

#partners {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--light-color);
}

#partners h2 {
    margin-bottom: 40px;
    font-size: 2rem;
}

.partner-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.partner-region h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.partner-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

#symptom-checker-form {
    padding: 40px 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

#symptom-checker-form h2 {
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group select, .form-group input {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ced4da;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
}

.modal {
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    border-radius: 8px;
}

.close-btn {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-btn:hover,
.close-btn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

#diagnosis-result {
    padding: 40px 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 20px auto 0;
}

#diagnosis-result h2 {
    text-align: center;
    margin-bottom: 20px;
}

.triage-warning {
    background-color: var(--danger-color);
    color: white;
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background-color: white;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
    }

    header h1 {
        margin-bottom: 10px;
    }

    header nav {
        margin-top: 10px;
    }

    #hero h2 {
        font-size: 2.5rem;
    }

    .modal-content {
        width: 90%;
    }
}