body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

header {
    background: #2c3e50;
    color: #ffffff;
    padding: 15px 0;
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 20px auto;
    overflow: hidden;
}

#app {
    display: flex;
    gap: 20px;
}

#main-container {
    flex: 3;
    width: 60%;
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

#history-container {
    position: relative;
    width: 300px;
    background: #f4f4f4;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: opacity 0.3s ease, max-height 0.3s ease;
    opacity: 1;
    max-height: 1000px; /* Large enough to fit the content */
    overflow: auto;
}

#history-container.hidden {
    opacity: 0;
    max-height: 0;
    padding: 0;
    margin: 0;
    pointer-events: none; /* Prevent interaction when hidden */
}

.arrow-button {
    position: absolute;
    top: 10px;
    left: -30px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.arrow-button:hover {
    background: #2980b9;
}

.history-image {
    max-width: 100%;
    margin-bottom: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.history-image:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

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

input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

input[type="checkbox"] {
    margin-right: 10px;
}

.ketcher-panel {
    margin: 0 0 18px;
    border: 1px solid #d7dde3;
    border-radius: 8px;
    background: #ffffff;
    overflow: hidden;
}

.ketcher-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    background: #eef2f6;
    border-bottom: 1px solid #d7dde3;
}

.ketcher-panel-header h2 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.3;
}

.ketcher-panel-header button {
    padding: 7px 12px;
    font-size: 0.9rem;
}

.ketcher-panel.collapsed .ketcher-panel-header {
    border-bottom: none;
}

.ketcher-panel-body {
    padding: 12px;
}

.ketcher-frame {
    display: block;
    width: 100%;
    height: 520px;
    border: 1px solid #cfd7df;
    border-radius: 6px;
    background: #ffffff;
}

.ketcher-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

#clear-drawn-molecule-button {
    background: #6b7280;
}

#clear-drawn-molecule-button:hover {
    background: #4b5563;
}

#ketcher-status {
    color: #4b5563;
    font-size: 0.9rem;
}

#ketcher-status.error {
    color: #c0392b;
    font-weight: bold;
}

button {
    background: #2c3e50;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

button:hover {
    background: #1a252f;
    transform: scale(1.05);
}

#results-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.shap-panel {
    margin-top: 18px;
    border: 1px solid #d7dde3;
    border-radius: 8px;
    background: #ffffff;
    overflow: hidden;
}

.shap-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    background: #eef2f6;
    border-bottom: 1px solid #d7dde3;
}

.shap-panel-header h2 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.3;
}

#shap-status {
    color: #4b5563;
    font-size: 0.9rem;
}

#shap-status.error {
    color: #c0392b;
    font-weight: bold;
}

.shap-output {
    box-sizing: border-box;
    width: 100%;
    max-height: 520px;
    margin: 0;
    padding: 12px;
    overflow: auto;
    background: #111827;
    color: #f9fafb;
    font: 0.85rem/1.45 Consolas, Monaco, 'Courier New', monospace;
    white-space: pre;
}

.result-image {
    max-width: 150px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.result-image:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

footer {
    text-align: center;
    padding: 20px 0;
    background: #2c3e50;
    color: #ffffff;
    position: relative;
    bottom: 0;
    width: 100%;
    font-size: 0.9rem;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
}

.button-container {
    display: flex;
    justify-content: center;
    gap: 10px; /* Space between buttons */
    margin-top: 10px;
}

.image-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}


.red-button, .green-button, .grey-button {
    margin: 5px;
    padding: 5px 10px;
    font-size: 1.3 rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.red-button {
    background: #e74c3c;
    color: white;
}

.red-button:hover {
    background: #c0392b;
}

.green-button {
    background: #2ecc71;
    color: white;
}

.green-button:hover {
    background: #27ae60;
}

.grey-button {
    background: darkgrey;
    color: white;
}

.grey-button:hover {
    background: grey;
}

.submit-button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-button:hover {
    background: #2980b9;
}

.bulk-grey-button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1rem;
    background: darkgrey;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.bulk-grey-button:hover {
    background: grey;
}

/* Modal styles */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    border-radius: 10px;
    width: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
}

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

.close-button:hover {
    color: #000;
}


#confirmation-popup{
    position: fixed;
    bottom: 20px;
    left: 50%;
    transition: translateY(50 px);
    color: green;
    background-color: #2ecc71;
    border-radius: 5px;
    padding: 12px 20px;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}
#confirmation-popup.show {
    opacity: 1;
}

#error-popup{
    position: fixed;
    bottom: 20px;
    left: 50%;
    transition: translateY(50 px);
    color: red;
    background-color: #e2b9b9;
    border-radius: 5px;
    padding: 12px 20px;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}
#error-popup.show {
    opacity: 1;
}


/* Responsive Design for Phone Users */
@media (max-width: 768px) {
    body {
        font-size: 0.9rem;
    }

    #app {
        flex-direction: column; /* Stack the main container and history container vertically */
        gap: 10px;
    }

    #main-container {
        flex: 1;
        width: 100%; /* Full width for smaller screens */
        padding: 15px;
        box-shadow: none; /* Remove shadow for simplicity */
    }

    #history-container {
        width: 100%; /* Full width for smaller screens */
        padding: 15px;
        box-shadow: none; /* Remove shadow for simplicity */
    }

    .arrow-button {
        top: 5px;
        left: 5px;
        width: 25px;
        height: 25px;
        font-size: 0.8rem;
    }

    #results-container {
        flex-direction: column; /* Stack results vertically */
        gap: 10px;
    }

    .ketcher-frame {
        height: 430px;
    }

    .ketcher-panel-header,
    .ketcher-actions {
        align-items: stretch;
        flex-direction: column;
    }
}