.chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    background: #f4f5f7;
    border-radius: 6px;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
}
.chip:hover {
    background: #e6e9ed;
}
.chip.selected {
    background: #d2e5fa;
    border: 1px solid #4299e1;
}
.chip input {
    margin-right: 6px;
}

.timeline {
    display: flex;
    align-items: flex-end;
    gap: 12px;
}
.timeline div {
    display: flex;
    flex-direction: column;
}
.warning {
    color: #c53030;
    font-size: 0.9em;
}

.student-sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 6px 14px;
    margin: 8px 0 18px;
}

.student-sources-grid label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    background: #f8fafc;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.student-sources-grid label.selected {
    background: #e5f2ff;
    border-color: #007aff;
    color: #004a9f;
    font-weight: 500;
}

.student-sources-grid label:hover {
    background: #eef3f9;
    border-color: #c0c8d2;
}

.planning-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.planning-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 15px;
    color: #1d1d1f;
}

.planning-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.planning-actions .btn {
    background-color: #f3f4f6;
    border: 1px solid #cfd6dd;
    color: #333;
}

.planning-actions .btn:hover {
    background-color: #e8ecf1;
}

.planning-actions .btn.danger {
    border-color: #d9534f;
    color: #a30000;
}

.timeline-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    background: #f8fafc;
    padding: 12px;
    border-radius: 8px;
}
.timeline-block {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 8px;
    text-align: center;
    font-size: 13px;
}
.timeline-label {
    font-weight: 600;
    color: #475569;
    margin-bottom: 4px;
}
.timeline-range {
    color: #1e293b;
}


.flatpickr-calendar {
    border-radius: 6px !important;
    border: 1px solid #d8d8d8 !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08) !important;
    font-family: system-ui, sans-serif !important;
}

.flatpickr-day {
    border-radius: 4px !important;
    color: #444 !important;
}

.flatpickr-day:hover,
.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange {
    background-color: #0d99f2 !important; /* Craft blue */
    color: white !important;
}

.flatpickr-months .flatpickr-month {
    font-weight: 600 !important;
    color: #111 !important;
}

.flatpickr-weekdays {
    font-weight: 500 !important;
    color: #666 !important;
}