/* ===== 강의 일정 PC (768px 이상) ===== */
@media (min-width: 768px) {
    .schedule-content {
        max-width: 1200px;
        margin: 0 auto;
        padding: 40px 20px 60px;
    }

    .schedule-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 32px;
        flex-wrap: wrap;
        gap: 20px;
    }

    .schedule-header h1 {
        font-size: 26px;
        font-weight: 700;
        color: #212529;
    }

    .date-selector {
        display: flex;
        gap: 12px;
        align-items: center;
    }

    .date-selector select {
        padding: 10px 14px;
        border: 1px solid #dee2e6;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 500;
        color: #212529;
        background: #fff;
        min-width: 90px;
        cursor: pointer;
    }

    .date-selector select:focus {
        outline: none;
        border-color: #007bff;
    }

    .btn-prev-month,
    .btn-next-month {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: 1px solid #dee2e6;
        border-radius: 8px;
        color: #495057;
        font-size: 18px;
        transition: background 0.2s, color 0.2s;
    }

    .btn-prev-month:hover,
    .btn-next-month:hover {
        background: #f8f9fa;
        color: #007bff;
        border-color: #007bff;
    }

    .schedule-layout {
        display: grid;
        grid-template-columns: 320px 1fr;
        gap: 32px;
    }

    .schedule-calendar-section {
        position: sticky;
        top: 90px;
        height: fit-content;
    }

    .calendar-container {
        background: #f8f9fa;
        padding: 24px;
        border-radius: 12px;
        border: 1px solid #e9ecef;
    }

    .calendar-month {
        font-size: 18px;
        font-weight: 700;
        color: #212529;
        margin-bottom: 20px;
        text-align: center;
    }

    .calendar-grid {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 6px;
    }

    .calendar-day {
        padding: 12px;
        text-align: center;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        background: #fff;
        color: #495057;
        border: 1px solid #e9ecef;
        transition: background 0.2s, color 0.2s;
    }

    .calendar-day[data-day] {
        cursor: pointer;
    }

    .calendar-day:not([data-day]) {
        visibility: hidden;
        pointer-events: none;
    }

    .calendar-day[data-day]:hover {
        background: #e9ecef;
        color: #212529;
    }

    .calendar-day.has-schedule {
        background: #007bff;
        color: #fff;
        border-color: #007bff;
    }

    .calendar-day.has-schedule:hover {
        background: #0056b3;
        border-color: #0056b3;
    }

    .calendar-day.selected {
        background: #0056b3;
        color: #fff;
        border-color: #0056b3;
    }

    .schedule-list-section {
        padding: 0;
        min-height: 300px;
    }

    .schedule-list-header {
        margin-bottom: 20px;
    }

    .schedule-list-header h2 {
        font-size: 20px;
        font-weight: 700;
        color: #212529;
    }

    .schedule-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .schedule-item {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 20px 24px;
        background: #f8f9fa;
        border-radius: 10px;
        border: 1px solid #e9ecef;
    }

    .schedule-date {
        font-size: 14px;
        font-weight: 700;
        color: #007bff;
        min-width: 52px;
    }

    .schedule-title {
        flex: 1;
        min-width: 0;
        font-size: 16px;
        font-weight: 600;
        color: #212529;
    }

    .schedule-description {
        width: 100%;
        font-size: 14px;
        color: #495057;
        line-height: 1.6;
        margin-top: 4px;
    }

    .schedule-link {
        font-size: 14px;
        font-weight: 500;
        color: #007bff;
        white-space: nowrap;
    }

    .schedule-link:hover {
        text-decoration: underline;
    }

    .empty-state {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 80px 20px;
        color: #868e96;
        background: #f8f9fa;
        border-radius: 12px;
        border: 1px dashed #dee2e6;
    }

    .empty-state i {
        font-size: 56px;
        margin-bottom: 16px;
        color: #adb5bd;
    }

    .empty-state p {
        font-size: 15px;
    }
}