.ior-course-calendar {
    --ior-columns: 3;
    --ior-brand-primary: #4E9AC6;
    --ior-brand-secondary: #473B76;
    --ior-brand-surface: #ffffff;
    --ior-text-dark: #333333;
    display: grid;
    grid-template-columns: repeat(var(--ior-columns), minmax(0, 1fr));
    gap: 20px;
    margin: 0 0 28px;
    padding: 8px;
    background: radial-gradient(120% 120% at 20% 20%, rgba(78,154,198,0.08), transparent 55%),
                radial-gradient(90% 90% at 85% 10%, rgba(71,59,118,0.08), transparent 50%),
                #f7f9fc;
}

.ior-course-calendar.columns-1 { --ior-columns: 1; }
.ior-course-calendar.columns-2 { --ior-columns: 2; }
.ior-course-calendar.columns-3 { --ior-columns: 3; }
.ior-course-calendar.columns-4 { --ior-columns: 4; }

.ior-course-card {
    position: relative;
    background: var(--ior-brand-surface);
    border-radius: 16px;
    padding: 18px 18px 20px;
    box-shadow: 0 10px 30px rgba(26, 45, 84, 0.10);
    display: flex;
    flex-direction: column;
    gap: 12px;
    color: var(--ior-text-dark);
    overflow: hidden;
    border: 1px solid rgba(78, 154, 198, 0.14);
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.ior-course-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(78, 154, 198, 0.10), rgba(71, 59, 118, 0.10));
    opacity: 0;
    transition: opacity 160ms ease;
    pointer-events: none;
}

.ior-course-card:hover,
.ior-course-card:focus-within {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(26, 45, 84, 0.16);
    border-color: rgba(71, 59, 118, 0.18);
}

.ior-course-card:hover::before,
.ior-course-card:focus-within::before {
    opacity: 1;
}

.ior-course-title {
    font-size: 1.32rem;
    margin: 0;
    color: var(--ior-text-dark);
    font-weight: 800;
    letter-spacing: -0.015em;
}

.ior-course-dates {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: linear-gradient(135deg, rgba(78, 154, 198, 0.12), rgba(71, 59, 118, 0.10));
    border-radius: 14px;
    font-weight: 600;
    color: var(--ior-text-dark);
    font-size: 1.02rem;
    border: 1px solid rgba(78, 154, 198, 0.18);
}

.ior-course-dates-label {
    color: var(--ior-brand-secondary);
    font-weight: 800;
    white-space: nowrap;
}

.ior-course-dates-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.35;
}

.ior-course-brief {
    font-size: 1.12rem;
    color: #3b4755;
    line-height: 1.55;
}

.ior-course-price,
.ior-course-payment {
    font-size: 1.1rem;
    color: #2d3542;
    line-height: 1.5;
}

.ior-course-price strong,
.ior-course-payment strong {
    color: var(--ior-brand-secondary);
}

.ior-course-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--ior-brand-primary), var(--ior-brand-secondary));
    color: #ffffff;
    font-weight: 700;
    padding: 12px 16px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 10px 25px rgba(78, 154, 198, 0.25);
    transition: transform 140ms ease, box-shadow 140ms ease;
}

.ior-course-link a:hover,
.ior-course-link a:focus {
    transform: translateY(-1px);
    box-shadow: 0 14px 32px rgba(71, 59, 118, 0.28);
}

.ior-course-calendar.ior-empty {
    padding: 14px;
    border: 1px dashed rgba(78, 154, 198, 0.36);
    border-radius: 12px;
    text-align: center;
    color: #4b5565;
    background: rgba(78, 154, 198, 0.05);
}

@media (max-width: 1100px) {
    .ior-course-calendar {
        --ior-columns: 2;
    }
}

@media (max-width: 720px) {
    .ior-course-calendar {
        --ior-columns: 1;
    }
}

/* Calendar grid */
.ior-calendar-shell {
    background: #f7f9fc;
    border-radius: 18px;
    padding: 20px;
    border: 1px solid rgba(78, 154, 198, 0.16);
    box-shadow: 0 12px 36px rgba(26, 45, 84, 0.12);
    position: relative;
    overflow: hidden;
}

.ior-calendar-shell::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(60% 60% at 80% 10%, rgba(78, 154, 198, 0.10), transparent 60%),
                radial-gradient(50% 50% at 15% 15%, rgba(71, 59, 118, 0.08), transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.ior-calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.ior-calendar-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #5c6b7a;
    font-weight: 700;
}

.ior-calendar-month {
    font-size: 1.4rem;
    color: #333333;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.ior-calendar-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ior-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(78, 154, 198, 0.16), rgba(71, 59, 118, 0.16));
    color: #1f2b3a;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid rgba(78, 154, 198, 0.25);
    transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.ior-nav-btn:hover,
.ior-nav-btn:focus {
    transform: translateY(-1px);
    border-color: rgba(71, 59, 118, 0.32);
    box-shadow: 0 8px 20px rgba(26, 45, 84, 0.16);
}

.ior-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(78, 154, 198, 0.18);
    position: relative;
    z-index: 1;
    min-width: 760px;
}

.ior-calendar-grid-wrap {
    overflow-x: auto;
    margin: 0 -8px;
    padding: 0 8px 8px;
}

.ior-weekday {
    padding: 12px 10px;
    text-align: center;
    font-weight: 700;
    color: #4b5565;
    background: rgba(78, 154, 198, 0.10);
    border-bottom: 1px solid rgba(78, 154, 198, 0.18);
    font-size: 0.9rem;
}

.ior-day {
    min-height: 140px;
    padding: 12px;
    border-right: 1px solid rgba(232, 237, 245, 0.9);
    border-bottom: 1px solid rgba(232, 237, 245, 0.9);
    position: relative;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ior-day:nth-child(7n) {
    border-right: none;
}

.ior-day-number {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    font-weight: 800;
    color: #333333;
    background: rgba(78, 154, 198, 0.12);
}

.ior-day.is-today .ior-day-number {
    background: linear-gradient(135deg, #4E9AC6, #473B76);
    color: #ffffff;
    box-shadow: 0 10px 24px rgba(78, 154, 198, 0.35);
}

.ior-day.is-empty {
    background: #f5f7fb;
}

.ior-day-events {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ior-event-pill {
    display: block;
    text-decoration: none;
    padding: 10px 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(78, 154, 198, 0.22);
    background: linear-gradient(135deg, rgba(78, 154, 198, 0.12), rgba(71, 59, 118, 0.12));
    color: #1f2b3a;
    box-shadow: 0 6px 16px rgba(26, 45, 84, 0.12);
    transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}

.ior-event-pill:hover,
.ior-event-pill:focus {
    transform: translateY(-1px);
    border-color: rgba(71, 59, 118, 0.3);
    box-shadow: 0 10px 24px rgba(26, 45, 84, 0.18);
}

.ior-event-title {
    font-weight: 700;
    color: #333333;
    font-size: 0.98rem;
}

.ior-event-time {
    font-size: 0.9rem;
    color: #2b394d;
    margin-top: 2px;
}

.ior-event-price {
    font-size: 0.88rem;
    color: #473B76;
    font-weight: 700;
    margin-top: 4px;
}

.ior-calendar-empty {
    margin-top: 12px;
    padding: 12px;
    text-align: center;
    border: 1px dashed rgba(78, 154, 198, 0.36);
    border-radius: 12px;
    background: rgba(78, 154, 198, 0.05);
    color: #4b5565;
    position: relative;
    z-index: 1;
}

@media (max-width: 1024px) {
    .ior-weekday {
        font-size: 0.85rem;
    }
    .ior-day {
        min-height: 120px;
        padding: 10px;
    }
    .ior-calendar-grid {
        min-width: 680px;
    }
}

@media (max-width: 768px) {
    .ior-calendar-grid {
        border-radius: 10px;
    }
    .ior-day {
        min-height: 100px;
        padding: 8px;
    }
    .ior-calendar-grid {
        min-width: 620px;
    }
    .ior-calendar-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 540px) {
    .ior-day {
        min-height: 90px;
        padding: 8px 6px;
    }
    .ior-event-title {
        font-size: 0.95rem;
    }
    .ior-calendar-grid {
        min-width: 560px;
    }
    .ior-calendar-header {
        gap: 10px;
    }
    .ior-nav-btn {
        width: 100%;
        justify-content: center;
    }
}