/* Стили для календаря */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.header-left h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-left p {
    color: var(--gray-600);
}

.calendar-navigation {
    margin-bottom: 2rem;
}

.nav-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.current-month h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.calendar-container {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    margin-bottom: 2rem;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-weight: 600;
    padding: 1rem;
}

.weekday {
    text-align: center;
    padding: 0.5rem;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--gray-200);
}

.calendar-day {
    background: white;
    min-height: 150px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.calendar-day.empty {
    background: var(--gray-50);
}

.calendar-day.today {
    background: #f0f9ff;
}

.calendar-day.today::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
}

.day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.day-number {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.today-badge {
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
}

.day-lessons {
    flex: 1;
    overflow-y: auto;
    max-height: 100px;
}

.lesson-item {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    border-left: 3px solid var(--primary);
    transition: var(--transition);
}

.lesson-item:hover {
    background: var(--gray-100);
    transform: translateX(2px);
}

.lesson-time {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.125rem;
}

.lesson-title {
    color: var(--gray-700);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.125rem;
}

.lesson-student {
    color: var(--gray-600);
    font-size: 0.7rem;
}

.lesson-actions {
    margin-top: 0.25rem;
    opacity: 0;
    transition: var(--transition);
}

.lesson-item:hover .lesson-actions {
    opacity: 1;
}

.btn-link {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.125rem;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--primary);
}

.lesson-status-scheduled {
    border-left-color: var(--primary);
}

.lesson-status-completed {
    border-left-color: #4CAF50;
}

.lesson-status-in_progress {
    border-left-color: #FF9800;
}

.lesson-status-cancelled {
    border-left-color: var(--danger);
}

.day-empty {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 0.875rem;
    font-style: italic;
}

.day-actions {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--gray-200);
}

.add-lesson-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.add-lesson-link:hover {
    background: var(--gray-100);
}

.calendar-legend {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.calendar-legend h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 3px;
}

.legend-color.scheduled {
    background: var(--primary);
}

.legend-color.completed {
    background: #4CAF50;
}

.legend-color.in_progress {
    background: #FF9800;
}

.legend-color.cancelled {
    background: var(--danger);
}

.lesson-form-container {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    animation: fadeIn 0.3s ease-out;
}

.form-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.form-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lesson-form .form-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.lesson-form .form-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.lesson-form .form-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lesson-form .form-group {
    margin-bottom: 1.5rem;
}

.lesson-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lesson-form input,
.lesson-form select,
.lesson-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
}

.lesson-form input:focus,
.lesson-form select:focus,
.lesson-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.lesson-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

/* Адаптивность */
@media (max-width: 1024px) {
    .calendar-weekdays {
        padding: 0.75rem;
    }
    
    .weekday {
        font-size: 0.875rem;
    }
    
    .calendar-day {
        min-height: 120px;
        padding: 0.75rem;
    }
}

@media (max-width: 768px) {
    .calendar-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .header-right {
        display: flex;
        justify-content: flex-end;
    }
    
    .nav-controls {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .nav-controls .btn {
        width: 100%;
        justify-content: center;
    }
    
    .calendar-weekdays {
        display: none;
    }
    
    .calendar-days {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .calendar-day {
        min-height: auto;
        border-radius: var(--radius-lg);
        border: 1px solid var(--gray-200);
    }
    
    .calendar-day.empty {
        display: none;
    }
    
    .legend-items {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .lesson-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .lesson-form-container {
        padding: 1.5rem;
    }
    
    .form-header h2 {
        font-size: 1.25rem;
    }
    
    .lesson-form .form-section h3 {
        font-size: 1.125rem;
    }
}