body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.section {
    display: none;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.section.active {
    display: block;
}

h2, h3 {
    color: #333;
}

button {
    padding: 10px 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin: 5px;
}

button:hover {
    background-color: #0056b3;
}

button.unlink {
    background-color: #dc3545;
}

button.unlink:hover {
    background-color: #c82333;
}

input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="date"], textarea, select {
    width: 100%;
    max-width: 300px;
    padding: 8px;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

input[readonly] {
    background-color: #e9ecef;
    cursor: not-allowed;
}

textarea {
    height: 100px;
    resize: vertical;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f1f1;
}

.filter-controls {
    margin-bottom: 20px;
}

.filter-controls label {
    margin-right: 10px;
}

.error {
    color: red;
}

.success {
    color: green;
}

.loading .spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.modal-content {
    background: white;
    margin: 10% auto;
    padding: 20px;
    border-radius: 5px;
    width: 80%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.attachment-thumbnail {
    max-width: 100px;
    max-height: 100px;
    margin-right: 10px;
    vertical-align: middle;
}

.attachment-icon {
    cursor: pointer;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    margin-top: 10px;
}

.calendar-day {
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
    cursor: pointer;
}

.calendar-day.assigned {
    background-color: #d4edda;
}

.calendar-day:hover {
    background-color: #e9ecef;
}

#hour-checkboxes label {
    display: inline-block;
    width: 70px;
    margin: 5px;
}

#day-details {
    margin-top: 20px;
}

#day-details ul {
    list-style: none;
    padding: 0;
}

#day-details li {
    margin-bottom: 10px;
}

.hour-block {
    display: inline-block;
    background-color: #e9ecef;
    padding: 2px 6px;
    margin: 2px;
    border-radius: 4px;
}

#user-create-form label, #telegram-config-form label {
    display: inline-block;
    width: 150px;
    margin: 5px 0;
}

#user-create-form input[type="checkbox"], #telegram-config-form input[type="checkbox"] {
    width: auto;
    vertical-align: middle;
}

#user-list {
    margin-top: 20px;
}

#user-list th, #user-list td {
    padding: 8px;
}

#user-list button {
    padding: 5px 10px;
    font-size: 14px;
}

#telegram-config p {
    margin-bottom: 10px;
    color: #555;
}

#telegram-config code {
    background-color: #f4f4f4;
    padding: 2px 4px;
    border-radius: 3px;
}