/* ebbinghaus.css */
.ebbinghaus-student-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.ebbinghaus-student-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.ebbinghaus-student-card:hover {
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-md);
}

.ebbinghaus-student-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ebbinghaus-student-name {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--text-primary);
}

.plan-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.plan-tab {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    background: var(--bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.plan-tab:hover {
    border-color: var(--accent-purple);
}

.plan-tab.active {
    background: linear-gradient(135deg, var(--accent-purple), #C084FC);
    color: white;
    box-shadow: var(--shadow-md);
}

.plan-status-tag {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    margin-left: var(--space-sm);
}

.plan-calendar {
    margin-top: var(--space-lg);
}

.plan-calendar-toolbar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-md);
    align-items: center;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--border-color);
}

.plan-calendar-nav {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.plan-calendar-title {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 800;
    color: var(--text-primary);
    justify-content: center;
    position: relative;
}

.plan-calendar-title i {
    color: var(--info);
}

.plan-calendar-title-btn {
    border: none;
    background: transparent;
    color: inherit;
    font: inherit;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.plan-calendar-title-btn:hover {
    background: rgba(255, 107, 53, 0.08);
}

.plan-calendar-title-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.18);
}

.plan-calendar-view-toggle {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-xs);
}

.plan-calendar-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    padding: 6px 12px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.plan-calendar-btn:hover {
    background: var(--bg-primary);
    border-color: var(--primary-light);
    color: var(--text-primary);
}

.plan-calendar-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-color: transparent;
}

.plan-calendar-today {
    color: var(--primary);
}

.plan-calendar-filters {
    margin-top: var(--space-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.plan-filter-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 4px 8px 4px 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.plan-filter-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.plan-filter-item input {
    accent-color: var(--primary);
}

.plan-filter-delete {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
}

.plan-filter-delete:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.plan-filter-dot,
.plan-event-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--plan-color, var(--primary));
    flex-shrink: 0;
}

.plan-filter-label {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.plan-calendar-body {
    margin-top: var(--space-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.plan-calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, minmax(120px, 1fr));
    gap: var(--space-sm);
    font-weight: 700;
    color: var(--text-secondary);
    text-align: center;
    min-width: 840px;
}

.plan-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(120px, 1fr));
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    min-width: 840px;
}

.plan-calendar-cell {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: var(--space-sm);
    min-height: 140px;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.plan-calendar-cell.is-outside {
    opacity: 0.45;
}

.plan-calendar-cell.is-today {
    background: #FEE2E2;
    border-color: var(--danger);
}

.plan-calendar-date {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.plan-calendar-events {
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    max-height: 120px;
    padding-right: 2px;
}

.plan-calendar-event {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid;
    border-left-width: 4px;
    font-size: 0.78rem;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
}

.plan-calendar-event:hover {
    transform: translateY(-1px);
}

.plan-calendar-event.type-study {
    border-color: #22C55E;
}

.plan-calendar-event.type-review {
    border-color: #F59E0B;
}

.plan-calendar-event.is-overdue {
    border-color: var(--danger);
    color: var(--danger);
}

.plan-calendar-event.is-complete .plan-calendar-event-title {
    text-decoration: line-through;
    color: var(--text-muted);
}

.plan-event-checkbox {
    width: 14px;
    height: 14px;
    accent-color: var(--primary);
}

.plan-calendar-week-view {
    display: grid;
    grid-template-columns: repeat(7, minmax(160px, 1fr));
    gap: var(--space-sm);
    min-width: 980px;
}

.plan-calendar-week-day {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: var(--space-sm);
    min-height: 220px;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.plan-calendar-week-day.is-today {
    background: #FEE2E2;
    border-color: var(--danger);
}

.plan-calendar-week-header {
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.plan-calendar-day-view {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: var(--space-md);
}

.plan-calendar-day-view.is-today {
    background: #FEE2E2;
    border-color: var(--danger);
}

.plan-calendar-day-header {
    display: flex;
    justify-content: space-between;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.plan-calendar-day-events {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.plan-calendar-empty {
    text-align: center;
    color: var(--text-muted);
    padding: var(--space-lg);
    font-weight: 600;
}

@media (max-width: 900px) {
    .plan-calendar-toolbar {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .plan-calendar-nav,
    .plan-calendar-view-toggle {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .plan-calendar-weekdays,
    .plan-calendar-grid {
        grid-template-columns: repeat(7, minmax(90px, 1fr));
        min-width: 0;
    }

    .plan-calendar-week-view {
        grid-template-columns: repeat(7, minmax(120px, 1fr));
        min-width: 0;
    }

    .plan-calendar-week-day {
        min-height: 180px;
    }
}

@media (max-width: 480px) {
    .plan-calendar-weekdays,
    .plan-calendar-grid {
        grid-template-columns: repeat(7, minmax(80px, 1fr));
    }
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.calendar-day {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
}

.calendar-day:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.calendar-date {
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.calendar-status {
    font-size: 0.85rem;
    font-weight: 700;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    display: inline-block;
    color: white;
}

.plan-calendar-year-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.plan-calendar-year-row select {
    flex: 1;
}

.plan-calendar-month-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.plan-calendar-month-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    padding: 8px 0;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.plan-calendar-month-btn:hover {
    background: var(--bg-primary);
    border-color: var(--primary-light);
    color: var(--text-primary);
}

.plan-calendar-month-btn.is-active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-color: transparent;
}