/* General Styles */
body {
    font-family: 'Segoe UI', Calibri, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    font-size: 18px;
    line-height: 1.6;
}

/* Responsive container */
.container {
    width: 90%;
    max-width: 900px;
    margin: 20px auto;
    padding: 0;
    background-color: #fff;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    overflow: hidden;
}

/* Section Styles */
main {
    padding: 0;
}

section {
    margin-bottom: 0;
    padding: 30px 40px;
}

.introduction, .search-section, .upload-section, .contact {
    padding: 30px 40px;
    border-bottom: 1px solid #e8e8e8;
}

.introduction {
    background-color: #fff;
    text-align: center;
}


h1 {
    text-align: center;
    font-size: 2.5em;
    margin-top: 0px;
    margin-bottom: 10px;
    color: #23415A;
    font-weight: 600;
}

h2 {
    text-align: center;
    font-size: 1.5em;
    color: #23415A;
    margin-bottom: 20px;
    font-weight: 500;
}

.tooltip-text {
    line-height: 1.8;
    text-align: justify;
}

/* Link Styles */
a {
    color: #4682B4;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #23415A;
    text-decoration: underline;
}

/* Image Styles */
.image-container {
    text-align: center;
    margin: 30px 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Search Section */
.search-section {
    background-color: #f8f9fa;
}

.search-section h2 {
    margin-top: 0;
}

/* Contact Section */
.contact {
    background-color: #f8f9fa;
}

.contact-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.contact-info, .contact-logo {
    margin-bottom: 0px;
    text-align: center;
}

/* Button Styles */
.btn-submit {
    background: linear-gradient(135deg, #23415A 0%, #2c5a7a 100%);
    color: #fff;
    border: none;
    padding: 12px 24px;
    font-size: 1em;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(35, 65, 90, 0.2);
}

.btn-submit:hover {
    background: linear-gradient(135deg, #2c5a7a 0%, #4682B4 100%);
    box-shadow: 0 6px 16px rgba(35, 65, 90, 0.3);
    transform: translateY(-2px);
}

.btn-submit:disabled {
    background: linear-gradient(135deg, #888 0%, #999 100%);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* Form Styles */
.input-file {
    width: 70%;
    margin-bottom: 20px;
    margin-right: 20px;
    font-size: 1em;
    padding: 10px;
    border: 2px dashed #4682B4;
    border-radius: 8px;
    background-color: #f8f9fa;
    cursor: pointer;
}

.input-file:hover {
    background-color: #e9ecef;
    border-color: #23415A;
}

.input-select {
    width: 100%;
    padding: 12px;
    margin-bottom: 10px;
    font-size: 1em;
    border: 2px solid #4682B4;
    border-radius: 8px;
    background-color: #fff;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
}

.input-select:hover {
    border-color: #23415A;
    box-shadow: 0 2px 8px rgba(70, 130, 180, 0.2);
}

.input-select:focus {
    outline: none;
    border-color: #23415A;
    box-shadow: 0 0 0 3px rgba(70, 130, 180, 0.1);
}

/* Progress Bar Styles */
#progressContainer {
    margin-top: 20px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

#progressText {
    margin-bottom: 10px;
    font-weight: 500;
    color: #23415A;
}

#progressBar {
    transition: width 0.3s ease;
    font-weight: 500;
}

/* Contact logo image */
.contact-logo img {
    max-width: 200px;
    height: auto;
}

.header-logo {
    max-width: 150px;
    margin-bottom: 0px;
}

/* Error message styles */
.error-message {
    margin-top: 10px;
    padding: 15px;
    background-color: #f8d7da;
    color: #721c24;
    border-radius: 8px;
    border: 1px solid #f5c6cb;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .container {
        width: 95%;
        margin: 10px auto;
        border-radius: 8px;
    }

    section {
        padding: 20px 20px;
    }
    
    .introduction, .search-section, .upload-section, .contact {
        padding: 20px 20px;
    }

    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.3em;
    }

    .btn-submit {
        font-size: 0.95em;
        padding: 10px 20px;
    }
}