.popup {
    display: none;
    position: fixed;
    top: 80px; /* Adjusted to clear compact header */
    left: 0;
    width: 100%;
    height: calc(100% - 80px);
    background: rgba(0, 0, 0, 0.6);
    justify-content: center;
    align-items: center;
    z-index: 100; /* Higher than header */
}

.popup-content {
    background: #ffffff;
    padding: 24px;
    border-radius: 12px;
    width: 350px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 20px;
    color: #6b7280;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: #1e40af;
}

.popup-content h2 {
    font-size: 18px;
    margin-bottom: 16px;
    color: #1e40af;
}

form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-scroll {
    max-height: 60vh;
    overflow-y: auto;
    padding-right: 8px;
}

.form-scroll::-webkit-scrollbar {
    width: 6px;
}

.form-scroll::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 3px;
}

label {
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.label-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

input, select {
    padding: 8px 32px 8px 8px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
}

input:focus, select:focus {
    outline: none;
    border-color: #3b82f6;
}

#doi-search-btn {
    font-size: 16px;
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #1e40af;
    cursor: pointer;
}

#doi-search-btn.searching {
    color: #10b981;
}

#doi-search-btn.invalid {
    color: #dc2626;
}

.field-controls {
    display: flex;
    gap: 12px;
}

.field-controls button {
    padding: 8px;
    background: #10b981;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

.field-controls button:hover {
    background: #059669;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.form-actions button {
    padding: 8px;
    background: #1e40af;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

.form-actions button:hover {
    background: #3b82f6;
}

.form-actions #delete-btn {
    background: #dc2626;
}

.form-actions #delete-btn:hover {
    background: #b91c1c;
}

.additional-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.additional-field .field-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
}

.additional-field button {
    padding: 4px;
    background: #dc2626;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.additional-field button:hover {
    background: #b91c1c;
}

.additional-field .move-btn {
    background: #6b7280;
}

.additional-field .move-btn:hover {
    background: #4b5563;
}

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #1e40af;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 6px;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    transform: translateY(20px);
    z-index: 100; /* Ensure toast is above header */
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.mini-upload {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 5px 8px;
    margin-left: 5px;
    background-color: #007bff; /* رنگ دلخواه */
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
}

.mini-upload i {
    margin: 0;
    font-size: 1em;
}

.mini-upload:hover {
    background-color: #0056b3;
}


/* Responsive adjustments for popup */
@media (max-width: 600px), (min-resolution: 2dppx) {
    .popup-content {
        width: 90%;
        padding: 16px;
    }
}