body {
    font-family: Arial;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 80%;
    width: 80%;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
}

.input-columns {
    display: flex;
    margin-bottom: 20px;
}

.column {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 10px;
}

.column:first-child {
    padding-left: 0;
}

.column:last-child {
    padding-right: 0;
}

.column h3 {
    margin: 0 0 10px 0;
    font-size: 1.1em;
    color: #555;
}

.column > * {
    margin-bottom: 10px;
}

.column > *:last-child {
    margin-bottom: 0;
}

.file-type-separator {
    text-align: center;
    margin: 15px 0;
    color: #666;
    font-size: 14px;
    font-weight: 500;
}

/* Apple HIG inspired drop area */
.drop-area {
    border: 2px dashed #007AFF;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    background-color: rgba(0, 122, 255, 0.05);
    transition: all 0.2s;
    cursor: pointer;
}

.drop-area.highlight {
    background-color: rgba(0, 122, 255, 0.1);
    border-color: #0066CC;
}

.drop-text {
    display: flex;
    flex-direction: column;
    margin: 5px 0;
}

.drop-text p {
    margin: 0;
    color: #007AFF;
    font-size: 14px;
    line-height: 1.4;
}

/* Apple HIG Form Elements */
#calendarName {
    width: 100%;
    max-width: 220px; /* Standard Apple control width */
    padding: 8px 12px;
    border: 1px solid #d1d1d6;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #1c1c1e;
    background-color: #ffffff;
}

#calendarName:focus {
    outline: none;
    border-color: #007AFF;
    /* Removed box-shadow for UXP compatibility */
    outline: 2px solid rgba(0, 122, 255, 0.2);
    outline-offset: 2px;
}

button {
    width: 100%;
    max-width: 220px; /* Standard Apple control width */
    padding: 8px 16px;
    background-color: #007AFF;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: Arial, Helvetica, sans-serif; /* UXP compatible font stack */
}

button:hover {
    background-color: #0066CC;
}

button:active {
    background-color: #0052A3;
    /* Removed transform for UXP compatibility */
    position: relative;
    top: 1px;
    left: 1px;
}

button:disabled {
    background-color: #e5e5ea;
    color: #aeaeb2;
    cursor: not-allowed;
}

.drop-area input[type="file"] {
    display: none;
}

/* Apple HIG button styles */
button {
    padding: 8px 16px;
    background-color: #007AFF;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0066CC;
}

button:active {
    background-color: #0052A3;
}

button:disabled {
    background-color: #E5E5EA;
    color: #8E8E93;
    cursor: not-allowed;
}

#calendarName {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

input[type="file"] {
    flex-grow: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 8px 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.calendar-name-section {
    margin: 15px 0;
    padding: 15px;
    border: 1px solid #e5e5ea;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.calendar-name-section h4 {
    margin: 0 0 12px 0;
    font-size: 1em;
    color: #333;
}

.calendar-name-row {
    display: flex;
    align-items: flex-start;
}

.calendar-name-row #calendarName {
    width: 220px;
    max-width: 220px;
    margin-bottom: 0;
    margin-right: 10px;
    flex: none;
}

.calendar-name-row #downloadBtn {
    width: auto;
    max-width: none;
    white-space: nowrap;
}

.add-event-section {
    margin: 15px 0;
    padding: 15px;
    border: 1px solid #e5e5ea;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.add-event-section h4 {
    margin: 0 0 12px 0;
    font-size: 1em;
    color: #333;
}

.date-input {
    width: 100%;
    max-width: 220px;
    padding: 8px 12px;
    border: 1px solid #d1d1d6;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #1c1c1e;
    background-color: #ffffff;
}

.date-input:focus {
    outline: none;
    border-color: #007AFF;
    outline: 2px solid rgba(0, 122, 255, 0.2);
    outline-offset: 2px;
}

#addEventBtn {
    width: 100%;
    max-width: 220px;
    padding: 8px 16px;
    background-color: #34C759;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
}

#addEventBtn:hover {
    background-color: #30A14E;
}

#addEventBtn:active {
    background-color: #2D8F46;
}

.events-preview {
    margin: 20px 0;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 4px;
    overflow-x: auto;
}

.events-preview h3 {
    margin-top: 0;
    color: #555;
    margin-bottom: 15px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #f5f5f5;
    font-weight: bold;
}

tr:hover {
    background-color: #f9f9f9;
}

.editable {
    cursor: pointer;
}

.editable:hover {
    background-color: #f0f8ff;
}

.editable input,
.editable textarea {
    width: 100%;
    padding: 4px;
    border: 1px solid #007AFF;
    border-radius: 4px;
    font-family: Arial;
    font-size: 14px;
}

.editable textarea {
    min-height: 60px;
}

.delete-btn {
    padding: 4px 8px;
    margin: 2px;
    font-size: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    max-width: 80px;
    background-color: #FF3B30;
    color: white;
}

.delete-btn:hover {
    background-color: #D70015;
}

.actions-column {
    white-space: nowrap;
}

ul {
    padding: 0;
}

li {
    padding: 8px;
    border-bottom: 1px solid #eee;
}

li:last-child {
    border-bottom: none;
}

@media (max-width: 600px) {
    .upload-section, .download-section {
        flex-direction: column;
    }
    .upload-section > *,
    .download-section > * {
        margin-right: 0;
        margin-bottom: 10px;
    }
}