/* Pastel theme – biến màu */
:root {
    --pastel-bg: #f8f6fc;
    --pastel-bg-warm: #fdf8f5;
    --pastel-card: #ffffff;
    --pastel-border: #e8e2f0;
    --pastel-border-soft: #f0ecf5;
    --pastel-text: #4a4458;
    --pastel-text-muted: #7d7589;
    --pastel-accent: #9b8bb8;
    --pastel-accent-strong: #7c6b9e;
    --pastel-blue: #a8c5e8;
    --pastel-blue-strong: #7ba3d4;
    --pastel-mint: #b8e0d2;
    --pastel-mint-strong: #8bc9b8;
    --pastel-peach: #f5d5c8;
    --pastel-peach-strong: #e8b8a8;
    --pastel-lavender: #d4c8e8;
    --pastel-lavender-strong: #b8a6d4;
    --pastel-rose: #e8c8d8;
    --pastel-rose-strong: #d4a8c0;
    --pastel-yellow: #f5ebc8;
    --pastel-yellow-strong: #e8d8a0;
    --pastel-btn-primary: #8b9ed4;
    --pastel-btn-primary-hover: #7a8fc4;
    --pastel-btn-secondary: #9a8fa8;
    --pastel-btn-secondary-hover: #857a94;
    --pastel-today-bg: #faf3e0;
    --pastel-today-border: #e8dcc0;
    --pastel-weekend: #f0e4ec;
    --pastel-orange: #e8c898;
    --pastel-orange-strong: #d4a050;
    --pastel-modal-overlay: rgba(74, 68, 88, 0.4);
    --pastel-shadow: 0 4px 24px rgba(124, 107, 158, 0.08);
    --pastel-shadow-strong: 0 8px 32px rgba(124, 107, 158, 0.12);
}

html {
    height: 100%;
    margin: 0;
}
body {
    margin: 0;
    min-height: 100%;
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    background: linear-gradient(160deg, var(--pastel-bg) 0%, var(--pastel-bg-warm) 100%) !important;
    color: var(--pastel-text) !important;
    overflow-x: hidden;
    overflow-y: auto;
}
/* Dashboard: viewport cố định, scroll bên trong app */
body.calendar-dashboard {
    height: 100%;
    overflow: hidden;
}

/* Full viewport layout – trang lịch 100% fit màn hình */
.calendar-app-full {
    display: flex;
    flex-direction: column;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    padding: 10px;
}
.calendar-app-scroll {
    flex: 1;
    min-height: 0;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}
.calendar-app-header {
    flex-shrink: 0;
    margin-bottom: 0.75rem;
}
.calendar-shell-full {
    width: 100%;
    max-width: 100%;
    border-radius: 1.5rem;
}
.calendar-shell-full > #calendar-view.calendar-view-outer {
    overflow: visible;
}
.calendar-shell-full > #room-view,
.calendar-shell-full > #teacher-view,
.calendar-shell-full > #text-view {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

#room-view,
#teacher-view {
    -webkit-overflow-scrolling: touch;
}

/* Kẻ dọc nhẹ giữa các cột giờ trong Sử dụng phòng */
#room-view table td,
#room-view table th {
    border-right: 1px solid rgba(148, 130, 180, 0.18);
}

/* Preview vị trí khi kéo thả – ước lượng ô sẽ đặt ở đâu */
.drop-preview {
    animation: drop-preview-fade 0.15s ease-out;
}
@keyframes drop-preview-fade {
    from { opacity: 0.5; transform: scale(0.97); }
    to { opacity: 1; transform: scale(1); }
}
.calendar-shell-full > #stats-view.stats-view-outer {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}
/* Ẩn hẳn stats-view khi không ở tab Thống kê — tránh hiển thị sai vị trí */
.calendar-shell-full > #stats-view.stats-view-outer.hidden {
    display: none !important;
    visibility: hidden;
    position: absolute;
    left: -9999px;
    width: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}
/* Ẩn hẳn calendar-view khi ở Text view — tránh chồng chéo lưới tuần */
.calendar-shell-full > #calendar-view.calendar-view-outer.hidden {
    display: none !important;
    visibility: hidden;
    position: absolute;
    left: -9999px;
    width: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

.calendar-shell {
    display: flex;
    flex-direction: column;
    min-height: 0;
    flex: 1;
    background: linear-gradient(180deg, var(--pastel-card) 0%, #fdfcff 100%);
    box-shadow: var(--pastel-shadow), 0 1px 3px rgba(124, 107, 158, 0.06);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--pastel-border-soft);
}

.calendar-header-bar {
    background: linear-gradient(135deg, #f5f0fa 0%, #f0ebe8 50%, #f5f2ef 100%);
    color: var(--pastel-text);
    border-bottom: 1px solid var(--pastel-border-soft);
}

.calendar-title-badge {
    background: var(--pastel-lavender);
    border: 1px solid var(--pastel-lavender-strong);
    color: var(--pastel-accent-strong);
}

.calendar-logo-img {
    height: 32px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
    display: block;
}

.calendar-control-pill {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--pastel-border-soft);
    color: var(--pastel-text);
    box-shadow: 0 1px 2px rgba(124, 107, 158, 0.06);
}

/* Calendar switcher tabs */
.calendar-switcher-tabs {
    background: var(--pastel-border-soft);
    border: 1px solid var(--pastel-border);
    scrollbar-width: thin;
}
.calendar-switcher-tabs::-webkit-scrollbar {
    height: 6px;
}
.calendar-switcher-tabs .calendar-tab {
    flex-shrink: 0;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pastel-text-muted);
    background: transparent;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
    white-space: nowrap;
}
.calendar-switcher-tabs .calendar-tab:hover {
    color: var(--pastel-text);
    background: rgba(255, 255, 255, 0.7);
}
.calendar-switcher-tabs .calendar-tab[aria-selected="true"],
.calendar-switcher-tabs .calendar-tab.active {
    color: var(--pastel-accent-strong);
    background: var(--pastel-card);
    box-shadow: 0 1px 2px rgba(124, 107, 158, 0.1);
}

/* --- Calendar month view --- */
.calendar-shell.calendar-shell-outer {
    overflow-x: hidden;
}
/* Trong layout full, #calendar-view là vùng cuộn (overflow: auto) để sticky hoạt động */
#calendar-view.calendar-view-outer {
    overflow-x: hidden;
}
.calendar-shell-full > #calendar-view.calendar-view-outer {
    overflow-y: auto;
    overflow-x: auto;
}

#calendar-view {
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 50%, #f0edf5 100%);
}
#calendar-view.week-time-axis-mode {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    background: #f3f4f6 !important;
}
#calendar-view.week-time-axis-mode #calendar-weekdays-wrap {
    display: none !important;
}
#calendar-view.week-time-axis-mode #calendar-list {
    display: flex;
    flex: 1;
    min-height: 0;
}
.week-time-axis-root {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}
.week-time-axis-grid-wrap {
    position: relative;
    min-width: min-content;
}
.week-time-axis-header.calendar-grid,
.week-time-axis-grid.calendar-grid {
    min-width: 600px;
}
.week-time-axis-header .hour-row,
.week-time-axis-grid .hour-row {
    height: 80px;
}
/* Đường kẻ dọc ngăn cách các thứ trong lịch tuần 1 giáo viên */
.week-time-axis-header > div:not(:first-child) {
    border-left: 1px solid #e2e8f0 !important;
}
.week-time-axis-grid .hour-row.border-l {
    border-left-width: 1px !important;
    border-left-color: #e2e8f0 !important;
}
.week-time-axis-scroll {
    overflow-y: auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    /* Ẩn thanh cuộn dọc */
    scrollbar-width: none;
}
.week-time-axis-scroll::-webkit-scrollbar {
    width: 0;   /* Ẩn thanh cuộn dọc */
    height: 6px;
}
.week-time-axis-scroll::-webkit-scrollbar-track {
    background: #f1f5f9;
}
.week-time-axis-scroll::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}

/* Text view – mobile-friendly event list */
#text-view {
    flex: 1;
    min-height: 0;
    -webkit-overflow-scrolling: touch;
}
#text-view-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
#text-view-list.text-view-week-mode {
    gap: 1.5rem;
}
.text-view-day-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.text-view-day-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.625rem 1rem;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    border-radius: 0.75rem;
    border: 1px solid #a7f3d0;
    font-weight: 700;
}
.text-view-day-name {
    font-size: 0.9375rem;
    color: #047857;
}
.text-view-day-date {
    font-size: 0.8125rem;
    color: #059669;
    opacity: 0.9;
}
.text-view-card {
    min-height: 48px;
    touch-action: manipulation;
}
.text-view-card-week {
    border-left: 4px solid #10b981;
}
.text-view-time-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: #047857;
    background: #d1fae5;
    border-radius: 0.5rem;
}

#calendar-weekdays-placeholder {
    min-height: 0;
    transition: height 0.15s ease;
}

#calendar-weekdays {
    gap: 10px;
    padding: 20px 24px 20px;
    position: sticky;
    top: var(--sticky-header-height, 0);
    z-index: 15;
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    border-bottom: 1px solid var(--pastel-border-soft);
    margin-bottom: 0;
}

/* Dính mép khi cuộn (JS bật class .stuck-viewport, dùng fixed) */
#calendar-weekdays.stuck-viewport {
    position: fixed;
    top: var(--stuck-top, 0);
    left: var(--stuck-left, 0);
    width: var(--stuck-width, 100%);
    z-index: 15;
    box-sizing: border-box;
}

#calendar-grid {
    gap: 10px;
    padding: 16px 24px 24px;
}

.calendar-weekday {
    color: var(--pastel-text-muted);
    letter-spacing: 0.02em;
    text-transform: none;
    font-weight: 700;
    font-size: 1rem;
    padding: 10px 0;
}

.calendar-weekday.is-weekend {
    color: var(--pastel-rose-strong);
}

.calendar-weekday.is-saturday {
    color: var(--pastel-blue-strong);
}

.calendar-weekday.is-sunday {
    color: var(--pastel-orange-strong);
}

.calendar-day-cell {
    background: var(--pastel-card);
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(124, 107, 158, 0.06), 0 1px 2px rgba(124, 107, 158, 0.04);
    border: 1px solid var(--pastel-border-soft);
    position: relative;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.calendar-day-cell:hover {
    box-shadow: 0 8px 20px rgba(155, 139, 184, 0.14), 0 2px 6px rgba(124, 107, 158, 0.06);
    border-color: var(--pastel-lavender);
    transform: translateY(-1px);
}

.calendar-day-cell::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 12px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--pastel-border) 0%, var(--pastel-accent) 100%);
    opacity: 0.5;
}

.calendar-day-cell.is-weekend::after {
    opacity: 0.6;
}

.calendar-day-cell.is-saturday::after {
    background: linear-gradient(90deg, var(--pastel-blue) 0%, var(--pastel-blue-strong) 100%);
}

.calendar-day-cell.is-sunday::after {
    background: linear-gradient(90deg, var(--pastel-orange) 0%, var(--pastel-orange-strong) 100%);
}

.calendar-day-cell.is-outside {
    background: #f8f6fc;
    opacity: 0.75;
}

/* Ô ngày có thể dán khi đang ở chế độ copy */
.calendar-cell-can-paste {
    cursor: pointer;
}
.calendar-cell-can-paste:hover {
    box-shadow: 0 4px 16px rgba(124, 107, 158, 0.15);
}

.calendar-day-cell.is-outside::after {
    opacity: 0.35;
}

.calendar-day-cell.is-today {
    background: linear-gradient(135deg, var(--pastel-yellow) 0%, var(--pastel-today-bg) 100%);
    border-color: var(--pastel-today-border);
    box-shadow: 0 4px 14px rgba(232, 216, 160, 0.25), 0 2px 6px rgba(124, 107, 158, 0.06);
}

.calendar-day-cell.is-today:hover {
    box-shadow: 0 8px 24px rgba(232, 216, 160, 0.3), 0 2px 8px rgba(124, 107, 158, 0.06);
}

/* Nền hoa văn ngày nghỉ lễ (Bộ LĐTBXH) – khi lang=vi */
.calendar-day-cell.is-holiday {
    background-color: rgba(254, 242, 242, 0.95);
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 4px,
            rgba(225, 150, 160, 0.12) 4px,
            rgba(225, 150, 160, 0.12) 5px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 4px,
            rgba(225, 150, 160, 0.08) 4px,
            rgba(225, 150, 160, 0.08) 5px
        );
    border-color: rgba(225, 150, 160, 0.3);
}
.calendar-day-cell.is-holiday.is-today {
    background-color: rgba(254, 248, 235, 0.98);
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 4px,
            rgba(225, 175, 130, 0.15) 4px,
            rgba(225, 175, 130, 0.15) 5px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 4px,
            rgba(225, 175, 130, 0.1) 4px,
            rgba(225, 175, 130, 0.1) 5px
        );
}
.calendar-day-cell.is-holiday.is-outside {
    background-color: rgba(252, 240, 241, 0.9);
}

.calendar-day-number {
    background: transparent;
    color: var(--pastel-text);
    box-shadow: none;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.calendar-day-number.is-today {
    color: #8b7340;
}

.calendar-day-number.is-saturday {
    color: var(--pastel-blue-strong);
}

.calendar-day-number.is-sunday {
    color: var(--pastel-orange-strong);
}

.calendar-event-chip {
    box-shadow: 0 2px 6px rgba(124, 107, 158, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
    transition: transform 0.12s ease, box-shadow 0.12s ease;
    font-size: clamp(0.7rem, 1.2vw + 0.5rem, 0.95rem);
    color: #000 !important;
    cursor: grab;
}
/* Nền tối: chữ sáng để dễ đọc, tương phản tốt */
.calendar-event-chip--light-text {
    color: #fff !important;
}
.calendar-event-chip:active {
    cursor: grabbing;
}

.calendar-event-chip:hover {
    transform: translateY(-0.5px);
    box-shadow: 0 4px 12px rgba(124, 107, 158, 0.18);
}

/* Thẻ lịch có GV dạy thay: viền trái màu cam */
.calendar-event-chip--substitute {
    border-left-color: #f59e0b !important;
    border-left-width: 4px;
    border-left-style: solid;
}

/* Sự kiện trung tâm: nổi bật hơn */
.calendar-event-chip--center-event {
    box-shadow: 0 4px 12px rgba(124, 107, 158, 0.2), 0 0 0 2px rgba(245, 158, 11, 0.3);
    border-left-width: 4px;
    border-left-style: solid;
    border-left-color: rgba(0, 0, 0, 0.2);
}

/* Icons trong thẻ lịch: màu theo nền (đen trên nền sáng, trắng trên nền tối) */
.calendar-event-chip button,
.calendar-event-chip button i,
.calendar-event-chip button svg {
    color: #000 !important;
}
.calendar-event-chip--light-text button,
.calendar-event-chip--light-text button i,
.calendar-event-chip--light-text button svg {
    color: #fff !important;
}
/* Ẩn icon điểm danh học viên */
.calendar-event-chip a[href*="attendance"],
.calendar-event-chip a[href*="attendance"] i,
.calendar-event-chip a[href*="attendance"] svg {
    display: none !important;
}

/* Hiệu ứng magnification giống macOS khi hover icons (thùng rác, copy, điểm danh) */
.calendar-event-chip button,
.calendar-event-chip a[href*="attendance"] {
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center;
}
.calendar-event-chip button:hover,
.calendar-event-chip a[href*="attendance"]:hover {
    transform: scale(1.25);
}

.calendar-day-add-bar {
    flex-shrink: 0;
}

/* --- Event detail modal (popup chi tiết sự kiện) --- */
.event-detail-modal {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999 !important;
    padding: 0.5rem;
    padding-left: max(0.5rem, env(safe-area-inset-left));
    padding-right: max(0.5rem, env(safe-area-inset-right));
    box-sizing: border-box;
}
.event-detail-modal-overlay {
    backdrop-filter: blur(4px);
}
.event-detail-modal-box {
    width: 100%;
    max-width: 56rem;
    max-height: 90vh;
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.event-detail-modal-header-wrap {
    flex-shrink: 0;
}
.event-detail-modal-header-new {
    flex-wrap: wrap;
    gap: 0.75rem;
}
.event-detail-modal-header-new .event-detail-modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
}
.event-detail-modal-header-green {
    background: linear-gradient(to right, #059669, #047857);
}
.event-detail-modal-header-green .text-green-100 {
    color: rgba(255, 255, 255, 0.9);
}
.event-detail-modal-body-new {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid #e2e8f0;
}
.event-detail-modal-body-new > div {
    border-left: none !important;
    border-top: 1px solid #e2e8f0;
}
.event-detail-modal-body-new > div:first-child {
    border-top: none;
}
@media (min-width: 768px) {
    .event-detail-modal-header-new .event-detail-modal-title {
        font-size: 1.5rem;
    }
    .event-detail-modal-body-new {
        grid-template-columns: repeat(3, 1fr);
    }
    .event-detail-modal-body-new > div {
        border-top: none !important;
        border-left: 1px solid #e2e8f0 !important;
    }
    .event-detail-modal-body-new > div:first-child {
        border-left: none !important;
    }
}
@media (max-width: 640px) {
    .event-detail-modal {
        align-items: flex-end;
        padding: 0;
        padding-bottom: env(safe-area-inset-bottom, 0);
    }
    .event-detail-modal-box {
        max-height: 92vh;
        max-height: calc(100vh - 1rem);
        border-radius: 1rem 1rem 0 0;
        border-bottom: none;
    }
    .event-detail-modal-header-new {
        padding: 1rem 1rem 1rem !important;
        gap: 0.5rem;
    }
    .event-detail-modal-header-new .event-detail-modal-title {
        font-size: 1.125rem;
        line-height: 1.35;
    }
    .event-detail-modal-header-new > div:first-child > div:first-child {
        padding: 0.5rem !important;
    }
    .event-detail-modal-header-new > div:first-child > div:first-child i,
    .event-detail-modal-header-new > div:first-child > div:first-child [data-lucide] {
        width: 1.25rem !important;
        height: 1.25rem !important;
    }
    .event-detail-status-badge {
        padding: 0.25rem 0.5rem !important;
        font-size: 0.75rem !important;
    }
    .event-detail-modal-close-header {
        width: 2.25rem !important;
        height: 2.25rem !important;
        min-width: 44px;
        min-height: 44px;
    }
    .event-detail-modal-body-new > div,
    .event-detail-modal-body-legacy {
        padding: 0.75rem 1rem !important;
    }
    .event-detail-modal-body-new h3 {
        font-size: 0.8125rem !important;
        margin-bottom: 0.5rem !important;
    }
    .event-detail-info-row {
        padding: 0.5rem 0.75rem !important;
        gap: 0.5rem;
    }
    .event-detail-info-row p.text-xs {
        font-size: 0.6875rem !important;
    }
    .event-detail-info-row p.text-sm {
        font-size: 0.8125rem !important;
    }
    .event-detail-modal-footer {
        padding: 0.75rem 1rem !important;
        flex-direction: column;
        gap: 0.75rem;
    }
    .event-detail-modal-footer p.text-xs {
        font-size: 0.6875rem;
        text-align: center;
        order: 2;
    }
    .event-detail-modal-footer > div {
        order: 1;
        width: 100%;
        justify-content: stretch;
    }
    .event-detail-modal-close,
    .event-detail-modal-edit {
        min-height: 44px;
        padding: 0.625rem 1rem;
        flex: 1;
        justify-content: center;
    }
}
@media (max-width: 480px) {
    .event-detail-modal-header-new {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    .event-detail-modal-header-new > div:first-child {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .event-detail-modal-header-new > div:last-child {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}
.event-detail-modal-body {
    font-size: 0.8125rem;
    line-height: 1.45;
    color: #334155;
}
.event-detail-modal-body-legacy {
    padding: 1rem 1.25rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: #334155;
}
.event-detail-modal-body-legacy .event-detail-row {
    margin-bottom: 0.375rem;
}
.event-detail-info-row {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    transition: background 0.15s;
}
.event-detail-info-row:hover {
    background: #f8fafc;
}
.event-detail-modal-footer {
    padding: 1rem 1.25rem;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
}
.event-detail-modal-close {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
    background: #fff;
    border: 1px solid #e2e8f0;
    color: #475569;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.event-detail-modal-close:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #334155;
}
.event-detail-modal-close-header {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    background: transparent;
    transition: background 0.15s;
}
.event-detail-modal-close-header:hover {
    background: rgba(255, 255, 255, 0.2);
}
.event-detail-modal-edit {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
    background: #0d9488;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.15s;
}
.event-detail-modal-edit:hover {
    background: #0f766e;
}
.event-detail-modal-body .font-bold.text-sm {
    font-size: 0.8125rem;
}
.event-detail-modal-body .text-xs {
    font-size: 0.75rem;
}

.calendar-day-add-bar button:hover {
    color: var(--pastel-accent-strong, #0d9488);
}

/* --- Calendar grid: mobile responsive --- */
@media (max-width: 640px) {
    #calendar-weekdays {
        gap: 6px;
        padding: 12px 12px 12px;
    }
    #calendar-grid {
        gap: 6px;
        padding: 12px 12px 16px;
    }
    .calendar-weekday {
        font-size: 0.75rem;
        padding: 6px 0;
    }
    .calendar-day-cell {
        border-radius: 10px;
    }
    .calendar-day-cell::after {
        left: 8px;
        right: 8px;
        bottom: 8px;
    }
    .calendar-day-number {
        font-size: 1rem;
    }
    .calendar-event-chip {
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    #calendar-weekdays {
        gap: 4px;
        padding: 10px 8px 10px;
    }
    #calendar-grid {
        gap: 4px;
        padding: 10px 8px 14px;
    }
    .calendar-weekday {
        font-size: 0.6875rem;
        padding: 4px 0;
    }
    .calendar-day-number {
        font-size: 0.875rem;
    }
    .calendar-event-chip {
        font-size: 0.6rem;
    }
}

/* Stats view mobile responsive */
@media (max-width: 640px) {
    #stats-view .flex-wrap,
    .stats-view-outer .flex-wrap {
        flex-direction: column;
        align-items: stretch;
    }
    #stats-view .stats-filter-wrap,
    .stats-view-outer .stats-filter-wrap {
        flex-wrap: wrap;
    }
    #stats-student-export-wrap {
        flex-direction: column;
    }
}

/* Touch targets: minimum 44px for tap areas on mobile */
@media (max-width: 640px) {
    .pastel-control:not(select),
    .pastel-nav-icon,
    .pastel-event-btn,
    button[id^="view-"],
    #prev-month,
    #next-month,
    #lang-selector-btn,
    .lang-option {
        min-height: 44px;
    }
    .pastel-control:not(select) {
        padding: 0.625rem 1rem;
    }
    .calendar-tab {
        min-height: 40px;
        padding: 0.5rem 0.75rem;
    }
    .calendar-event-chip button,
    .calendar-event-chip a[href*="attendance"] {
        min-height: 36px;
        min-width: 36px;
        padding: 0.5rem;
    }
    /* Dropdown panels: constrain to viewport on mobile */
    #calendar-teacher-filter-panel,
    #calendar-class-filter-panel,
    #teacher-view-filter-panel,
    #room-view-filter-panel {
        max-height: 70vh;
    }
}

/* Filter dropdowns: visible scrollbar for long lists */
#calendar-teacher-filter-panel,
#calendar-class-filter-panel,
#teacher-view-filter-panel,
#room-view-filter-panel {
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #94a3b8 #f1f5f9;
}
#calendar-teacher-filter-panel::-webkit-scrollbar,
#calendar-class-filter-panel::-webkit-scrollbar,
#teacher-view-filter-panel::-webkit-scrollbar,
#room-view-filter-panel::-webkit-scrollbar {
    width: 8px;
}
#calendar-teacher-filter-panel::-webkit-scrollbar-track,
#calendar-class-filter-panel::-webkit-scrollbar-track,
#teacher-view-filter-panel::-webkit-scrollbar-track,
#room-view-filter-panel::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}
#calendar-teacher-filter-panel::-webkit-scrollbar-thumb,
#calendar-class-filter-panel::-webkit-scrollbar-thumb,
#teacher-view-filter-panel::-webkit-scrollbar-thumb,
#room-view-filter-panel::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}
#calendar-teacher-filter-panel::-webkit-scrollbar-thumb:hover,
#calendar-class-filter-panel::-webkit-scrollbar-thumb:hover,
#teacher-view-filter-panel::-webkit-scrollbar-thumb:hover,
#room-view-filter-panel::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

.calendar-modal {
    position: fixed;
    inset: 0;
    background: var(--pastel-modal-overlay);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 50;
}

.calendar-modal-card {
    background: var(--pastel-card);
    border-radius: 24px;
    width: 100%;
    max-width: 520px;
    overflow: hidden;
    box-shadow: var(--pastel-shadow-strong);
    border: 1px solid var(--pastel-border-soft);
    animation: calendarZoomIn 0.2s ease-out;
}

@media (max-width: 640px) {
    .calendar-modal {
        padding: 0.5rem;
        align-items: flex-end;
    }
    .calendar-modal-card {
        max-width: 100%;
        max-height: 95vh;
        overflow-y: auto;
        border-radius: 20px 20px 0 0;
    }
}

.calendar-modal-header {
    padding: 20px 24px;
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    border-bottom: 1px solid var(--pastel-border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.calendar-input {
    width: 100%;
    background: #faf8fc;
    border: 1px solid var(--pastel-border-soft);
    border-radius: 16px;
    padding: 12px 16px;
    outline: none;
    font-weight: 600;
    color: var(--pastel-text);
}

.calendar-input::placeholder {
    color: var(--pastel-text-muted);
}

.calendar-input:focus {
    border-color: var(--pastel-blue-strong);
    box-shadow: 0 0 0 3px rgba(123, 163, 212, 0.15);
}

.calendar-time-indicator {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--pastel-rose-strong);
    z-index: 40;
    pointer-events: none;
    transition: left 0.2s ease-out;
}

.calendar-time-dot {
    position: absolute;
    top: -4px;
    left: -6px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--pastel-rose-strong);
}

.calendar-current-cell {
    background-image: repeating-linear-gradient(45deg, transparent, transparent 4px, rgba(184, 224, 210, 0.25) 4px, rgba(184, 224, 210, 0.25) 8px);
}

@keyframes calendarZoomIn {
    from { transform: scale(0.98); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* Searchable select (popup Xếp lịch) */
.searchable-select-dropdown {
    background: var(--pastel-card);
    border: 1px solid var(--pastel-border);
    border-radius: 12px;
    box-shadow: var(--pastel-shadow-strong);
    max-height: 220px;
    overflow-y: auto;
    padding: 4px 0;
}
.searchable-select-dropdown:not(.hidden) {
    display: block;
}
.searchable-select-item {
    padding: 8px 14px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pastel-text);
    cursor: pointer;
    transition: background 0.1s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.searchable-select-item:hover,
.searchable-select-item.active {
    background: var(--pastel-border-soft);
}
.searchable-select-item.empty-msg {
    color: var(--pastel-text-muted);
    cursor: default;
}
.searchable-select-item.empty-msg:hover {
    background: transparent;
}
.searchable-select-item-assigned {
    font-weight: 700;
}
.searchable-select-item.searchable-select-item-busy,
.searchable-select-item-busy {
    color: #dc2626 !important;
}
.searchable-select-input.searchable-select-input-busy,
.searchable-select-input-busy {
    color: #dc2626 !important;
}
.searchable-select-separator {
    height: 0;
    padding: 0;
    margin: 6px 12px;
    border-top: 1px solid var(--pastel-border-soft);
    cursor: default;
    pointer-events: none;
}

/* --- Pastel utility classes (dùng trong PHP) --- */
.pastel-page {
    background: linear-gradient(160deg, var(--pastel-bg) 0%, var(--pastel-bg-warm) 100%) !important;
    color: var(--pastel-text) !important;
}

.pastel-card {
    background: var(--pastel-card);
    border: 1px solid var(--pastel-border-soft);
    box-shadow: var(--pastel-shadow);
}

.pastel-card-header {
    border-bottom: 1px solid var(--pastel-border-soft);
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
}

.pastel-icon-box {
    background: var(--pastel-lavender);
    color: var(--pastel-accent-strong);
}

.pastel-btn-primary {
    background: var(--pastel-btn-primary);
    color: #fff;
}

.pastel-btn-primary:hover {
    background: var(--pastel-btn-primary-hover);
    color: #fff;
}

.pastel-btn-secondary {
    background: var(--pastel-btn-secondary);
    color: #fff;
}

.pastel-btn-secondary:hover {
    background: var(--pastel-btn-secondary-hover);
    color: #fff;
}

.pastel-link {
    color: var(--pastel-blue-strong);
}

.pastel-link:hover {
    color: var(--pastel-accent-strong);
}

.pastel-sidebar {
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    border: 1px solid var(--pastel-border-soft);
}

.pastel-label {
    color: var(--pastel-text-muted);
}

.pastel-bar {
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    border-bottom: 1px solid var(--pastel-border-soft);
}

.pastel-control {
    background: var(--pastel-card);
    border: 1px solid var(--pastel-border-soft);
    color: var(--pastel-text);
}

.pastel-control:hover {
    background: #faf8fc;
}

.pastel-badge {
    background: var(--pastel-lavender);
    color: var(--pastel-accent-strong);
}

.pastel-summary {
    background: var(--pastel-card);
    border: 1px solid var(--pastel-border-soft);
    color: var(--pastel-text-muted);
}

.pastel-summary span {
    color: var(--pastel-text);
}

/* Calendar summary – thống kê (dùng chung dashboard & share) */
.calendar-summary-wrap {
    display: flex;
    align-items: center;
    gap: 0;
    background: linear-gradient(135deg, #f0fdfa 0%, #ecfdf5 100%);
    border: 1px solid #a7f3d0;
    border-radius: 0.75rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
}
.calendar-summary-item {
    display: flex;
    align-items: baseline;
    gap: 0.35rem;
    padding: 0 0.5rem;
}
.calendar-summary-item:first-child { padding-left: 0.25rem; }
.calendar-summary-item:last-child { padding-right: 0.25rem; }
.calendar-summary-label {
    color: #0d9488;
    font-weight: 600;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.calendar-summary-value {
    color: #0f766e;
    font-weight: 700;
    font-size: 0.9375rem;
}
.calendar-summary-divider {
    width: 1px;
    height: 1.25rem;
    background: #99f6e4;
    border-radius: 1px;
    flex-shrink: 0;
}
@media (max-width: 640px) {
    .calendar-summary-wrap { flex-wrap: wrap; gap: 0.5rem; padding: 0.5rem 0.75rem; }
    .calendar-summary-divider { display: none; }
    .calendar-summary-item { padding: 0.15rem 0; }
}

.pastel-table-head {
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    border-color: var(--pastel-border-soft);
    color: var(--pastel-text-muted);
}

.stats-student-table thead tr th {
    background: transparent;
}

/* Bảng thống kê giờ dạy giáo viên: độ rộng cột, text không bị che */
.stats-teacher-table {
    table-layout: fixed;
    min-width: 100%;
}
.stats-teacher-table th,
.stats-teacher-table td {
    overflow-wrap: break-word;
    word-wrap: break-word;
    padding: 0.75rem 1rem;
    vertical-align: middle;
}
.stats-teacher-table td:nth-child(3),
.stats-teacher-table td:nth-child(4),
.stats-teacher-table td:nth-child(5),
.stats-teacher-table td:nth-child(11),
.stats-teacher-table td:nth-child(12) {
    white-space: normal;
    min-width: 0;
}
.stats-teacher-table th:nth-child(3),
.stats-teacher-table th:nth-child(4),
.stats-teacher-table th:nth-child(5),
.stats-teacher-table th:nth-child(11),
.stats-teacher-table th:nth-child(12) {
    white-space: normal;
}
#stats-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Kéo đổi độ rộng cột: handle bên phải mỗi ô header */
.stats-student-table th.stats-th-resize {
    position: relative;
}
.stats-student-table .stats-col-resize-handle {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 8px;
    cursor: col-resize;
    user-select: none;
}
.stats-student-table .stats-col-resize-handle:hover {
    background: rgba(124, 107, 158, 0.15);
}
/* Dòng header bảng: sticky khi cuộn trong #stats-student-table-wrap */
.stats-student-table thead tr {
    position: sticky;
    top: 0;
    z-index: 10;
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
    box-shadow: 0 2px 8px rgba(124, 107, 158, 0.12);
}
/* Panel Học tập học viên: flex để table-wrap chiếm phần còn lại và tự cuộn */
#stats-student-wrap.stats-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}
#stats-student-wrap .flex.justify-end.mb-3 {
    flex-shrink: 0;
}
/* Khung bảng: scroll dọc + scroll ngang, giới hạn chiều cao để luôn có thanh cuộn dọc */
#stats-student-table-wrap.stats-student-scroll-wrap {
    flex: 1;
    min-height: 0;
    overflow: auto;
    max-height: calc(100vh - 220px);
}

/* Wrapper bảng Học tập học viên */
.stats-student-scroll-wrap {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--pastel-border) var(--pastel-border-soft);
}
.stats-student-scroll-wrap::-webkit-scrollbar {
    height: 10px;
    width: 10px;
}
.stats-student-scroll-wrap::-webkit-scrollbar-track {
    background: var(--pastel-border-soft);
    border-radius: 0 0 8px 8px;
}
.stats-student-scroll-wrap::-webkit-scrollbar-thumb {
    background: var(--pastel-border);
    border-radius: 5px;
}
.stats-student-scroll-wrap::-webkit-scrollbar-thumb:hover {
    background: var(--pastel-text-muted);
}

/* Bảng Học tập học viên: colgroup điều khiển độ rộng cột (có thể kéo resize) */
.stats-student-table {
    table-layout: fixed;
    width: 100%;
    min-width: max-content;
}
.stats-student-table th,
.stats-student-table td {
    border-right: 1px solid var(--pastel-border-soft);
    white-space: nowrap;
}
.stats-student-table th:last-child,
.stats-student-table td:last-child {
    border-right: none;
    white-space: normal;
    min-width: 14rem;
    max-width: 22rem;
}
/* Cột STT và Học viên: sticky trái khi cuộn ngang */
.stats-student-table th:nth-child(1),
.stats-student-table td:nth-child(1) {
    position: sticky;
    left: 0;
    z-index: 2;
    background: #ffffff;
    width: 1%;
    min-width: 2.75rem;
}
.stats-student-table thead th:nth-child(1) {
    z-index: 6;
    background: #f5f2f8;
}
.stats-student-table th:nth-child(2),
.stats-student-table td:nth-child(2) {
    position: sticky;
    left: var(--stats-col-0-width, 2.75rem);
    z-index: 2;
    background: #ffffff;
    min-width: 8rem;
    box-shadow: 2px 0 6px rgba(124, 107, 158, 0.08);
}
.stats-student-table thead th:nth-child(2) {
    z-index: 6;
    background: #f5f2f8;
}
.stats-student-table tbody tr.bg-white td:nth-child(1),
.stats-student-table tbody tr.bg-white td:nth-child(2) {
    background: #ffffff;
}
.stats-student-table tbody tr.bg-slate-50\/50 td:nth-child(1),
.stats-student-table tbody tr.bg-slate-50\/50 td:nth-child(2) {
    background: #f8fafc;
}
.stats-student-table th:nth-child(3),
.stats-student-table td:nth-child(3) { min-width: 10rem; }
.stats-student-table th:nth-child(4),
.stats-student-table td:nth-child(4) { min-width: 7rem; }
.stats-student-table th:nth-child(5),
.stats-student-table td:nth-child(5) { min-width: 6rem; }
.stats-student-table th:nth-child(6),
.stats-student-table td:nth-child(6),
.stats-student-table th:nth-child(7),
.stats-student-table td:nth-child(7),
.stats-student-table th:nth-child(8),
.stats-student-table td:nth-child(8) { width: 1%; min-width: 4rem; }
.stats-student-table th:nth-child(n+9):not(:last-child),
.stats-student-table td:nth-child(n+9):not(:last-child) { min-width: 7rem; }

/* Ô nhận xét: xuống dòng thay vì cắt chữ */
.stats-student-table .stats-student-note-cell,
.stats-student-table .stats-student-comment-cell {
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    vertical-align: top;
}
.stats-student-table .stats-student-note-cell span.break-words,
.stats-student-table .stats-student-comment-cell {
    word-break: break-word;
}

.pastel-toast {
    background: var(--pastel-accent-strong);
    color: #fff;
}

.pastel-copy-banner {
    background: var(--pastel-lavender);
    border-color: var(--pastel-lavender-strong);
    color: var(--pastel-text);
}

.copy-mode-banner-inner {
    font-size: 1rem;
    line-height: 1.4;
}

.copy-mode-banner-text {
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.pastel-copy-banner button {
    background: var(--pastel-lavender-strong);
    color: var(--pastel-text);
}

/* Thông báo hướng dẫn copy: rõ, lớn, có nút đóng */
.copy-guide-toast {
    font-size: 1.0625rem;
    line-height: 1.45;
}

.pastel-modal-icon {
    background: var(--pastel-lavender);
    color: var(--pastel-accent-strong);
}

.pastel-stats-apply {
    background: var(--pastel-btn-secondary);
    color: #fff;
}

.pastel-stats-apply:hover {
    background: var(--pastel-btn-secondary-hover);
    color: #fff;
}

.pastel-share-copy {
    background: var(--pastel-btn-secondary);
    color: #fff;
}

.pastel-share-copy:hover {
    background: var(--pastel-btn-secondary-hover);
    color: #fff;
}

.pastel-event-btn {
    background: var(--pastel-accent-strong);
    color: #fff;
}

.pastel-event-btn:hover {
    background: var(--pastel-accent);
    color: #fff;
}

.pastel-nav-icon {
    background: #f5f2f8;
    color: var(--pastel-text);
    border: 1px solid var(--pastel-border-soft);
}

.pastel-nav-icon:hover {
    background: var(--pastel-lavender);
    color: var(--pastel-accent-strong);
}

.pastel-row {
    background: #faf8fc;
    border: 1px solid var(--pastel-border-soft);
}

.pastel-row input {
    background: var(--pastel-card);
    border-color: var(--pastel-border-soft);
    color: var(--pastel-text);
}

.pastel-save {
    color: var(--pastel-blue-strong);
}

.pastel-save:hover {
    color: var(--pastel-accent-strong);
}

.pastel-delete {
    color: var(--pastel-rose-strong);
}

.pastel-delete:hover {
    color: #b87890;
}

.border.pastel-border-soft,
.pastel-border-soft {
    border-color: var(--pastel-border-soft);
}

.pastel-legend-used {
    background: var(--pastel-blue);
    border: 1px solid var(--pastel-blue-strong);
}

.pastel-legend-current {
    background: var(--pastel-mint);
    border: 1px solid var(--pastel-mint-strong);
}

.pastel-legend-free {
    background: var(--pastel-peach);
    border: 1px solid var(--pastel-peach-strong);
}

/* Year view – grid 3×4 */
.calendar-year-grid {
    background: linear-gradient(180deg, #faf8fc 0%, #f5f2f8 100%);
}

.calendar-year-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

@media (max-width: 1024px) {
    .calendar-year-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .calendar-year-container {
        grid-template-columns: 1fr;
    }
}

.calendar-year-month {
    background: var(--pastel-card);
    border: 1px solid var(--pastel-border-soft);
    box-shadow: 0 2px 8px rgba(124, 107, 158, 0.06);
    min-height: 0;
}

.calendar-year-month-title {
    color: var(--pastel-text);
}

.calendar-year-weekdays {
    color: var(--pastel-text-muted);
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-year-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.calendar-year-day {
    border: none;
    background: transparent;
    cursor: pointer;
    aspect-ratio: 1;
    min-height: 24px;
    max-height: 32px;
    margin: 0 auto;
}

button.calendar-year-day.calendar-year-day-is-today {
    background: var(--pastel-blue) !important;
    color: #1e3a5f !important;
    border-radius: 50% !important;
    font-weight: 700;
}

button.calendar-year-day.calendar-year-day-has-events {
    background: var(--pastel-lavender) !important;
    color: var(--pastel-accent-strong) !important;
    border-radius: 50% !important;
}

button.calendar-year-day.calendar-year-day-has-events.calendar-year-day-is-today {
    background: var(--pastel-blue) !important;
    color: #1e3a5f !important;
    border-radius: 50% !important;
}

button.calendar-year-day.calendar-year-day-has-tasks {
    background: var(--pastel-yellow) !important;
    color: #92400e !important;
    border-radius: 50% !important;
}

button.calendar-year-day.calendar-year-day-has-tasks.calendar-year-day-has-events {
    background: linear-gradient(135deg, var(--pastel-lavender) 50%, var(--pastel-yellow) 50%) !important;
}

/* Công việc trên lịch tháng */
.calendar-task-chip {
    border-left-color: #f59e0b !important;
}

/* Thẻ công việc đúng ngày deadline: nền đỏ, chữ trắng, icon trắng */
.calendar-task-chip--deadline {
    background: #dc2626 !important;
    border-left-color: #b91c1c !important;
    color: #fff !important;
}

.calendar-task-chip--deadline * {
    color: inherit !important;
}

.calendar-task-chip--deadline svg {
    stroke: currentColor !important;
}

button.calendar-year-day.calendar-year-day-holiday {
    background-color: rgba(254, 242, 242, 0.9) !important;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 3px,
            rgba(225, 150, 160, 0.2) 3px,
            rgba(225, 150, 160, 0.2) 4px
        ) !important;
    border-radius: 50% !important;
}

/* Ô ngày trong Sử dụng phòng (tháng) có hoa văn khi nghỉ lễ */
#room-view .calendar-room-day-holiday {
    background-color: rgba(254, 242, 242, 0.85) !important;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 3px,
            rgba(225, 150, 160, 0.15) 3px,
            rgba(225, 150, 160, 0.15) 4px
        ) !important;
}

/* Ngày lễ nhỏ trên ô lịch (khi lang=vi) */
.calendar-holiday-badge {
    flex-shrink: 0;
}

/* Popup lịch ngày (year view) – timeline theo giờ, grid căn đúng cột phòng */
.modal-year-day-timeline-wrap {
    min-width: 0;
}

.modal-year-day-th-time,
.modal-year-day-th-room {
    position: sticky;
    top: 0;
    z-index: 2;
}

.modal-year-day-time-col {
    display: flex;
    flex-direction: column;
    background: #fafafa;
    overflow: hidden;
}

.modal-year-day-time-tick {
    flex-shrink: 0;
    padding: 2px 4px 0;
    font-size: 10px;
    font-weight: 600;
    color: var(--pastel-text-muted);
    border-bottom: 1px solid var(--pastel-border-soft);
    box-sizing: border-box;
}

.modal-year-day-room-col {
    background: repeating-linear-gradient(
        to bottom,
        transparent,
        transparent 29px,
        var(--pastel-border-soft) 29px,
        var(--pastel-border-soft) 30px
    );
    overflow: visible;
}

.modal-year-day-event-block {
    box-sizing: border-box;
    z-index: 1;
}

/* Popup lịch ngày (year view) – thanh scroll */
.modal-year-day-scroll {
    overflow-y: auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.modal-year-day-scroll::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
.modal-year-day-scroll::-webkit-scrollbar-track {
    background: var(--pastel-border-soft);
    border-radius: 10px;
}
.modal-year-day-scroll::-webkit-scrollbar-thumb {
    background: var(--pastel-accent);
    border-radius: 10px;
}
.modal-year-day-scroll::-webkit-scrollbar-thumb:hover {
    background: var(--pastel-accent-strong);
}

/* Thống kê: tab con Giờ dạy GV / Học tập học viên */
.stats-subtab.pastel-control-active {
    background: white;
    color: var(--pastel-text);
    box-shadow: 0 1px 2px rgba(124, 107, 158, 0.08);
}

/* ========== Trang Quản lý lớp học (hiện đại) ========== */
.classes-page {
    min-height: 100vh;
    background: linear-gradient(165deg, #f0edf5 0%, #f8f6fc 40%, #fdfbf9 100%);
}

.classes-app {
    max-width: 1280px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 1.25rem 1rem 2rem;
}

@media (min-width: 768px) {
    .classes-app {
        padding: 1.5rem 1.5rem 2rem;
    }
}

.classes-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.classes-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--pastel-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
    width: fit-content;
}

.classes-back:hover {
    color: var(--pastel-accent-strong);
}

.classes-header-content {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.classes-header-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--pastel-lavender) 0%, var(--pastel-blue) 100%);
    color: var(--pastel-accent-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(139, 158, 212, 0.25);
}

.classes-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--pastel-text);
    line-height: 1.25;
}

.classes-subtitle {
    margin: 0.25rem 0 0;
    font-size: 0.8125rem;
    color: var(--pastel-text-muted);
    line-height: 1.4;
}

.classes-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 900px) {
    .classes-main {
        grid-template-columns: 320px 1fr;
        gap: 2rem;
        align-items: start;
    }
    .classes-sidebar {
        position: sticky;
        top: 1rem;
    }
}

.classes-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.classes-sidebar-card {
    background: #fff;
    border-radius: 16px;
    padding: 1.25rem 1.25rem 1.5rem;
    border: 1px solid var(--pastel-border-soft);
    box-shadow: 0 2px 12px rgba(124, 107, 158, 0.06);
}

.classes-sidebar-title {
    margin: 0 0 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--pastel-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.classes-sidebar-title svg {
    flex-shrink: 0;
    color: var(--pastel-accent);
}

.classes-sidebar-hint {
    margin: 0 0 0.5rem;
    font-size: 0.75rem;
    color: var(--pastel-text-muted);
}

.classes-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.classes-input,
.classes-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--pastel-text);
    background: #faf8fc;
    border: 1px solid var(--pastel-border-soft);
    border-radius: 10px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.classes-input:focus,
.classes-textarea:focus {
    outline: none;
    border-color: var(--pastel-blue-strong);
    box-shadow: 0 0 0 3px rgba(123, 163, 212, 0.15);
}

.classes-textarea {
    resize: vertical;
    min-height: 100px;
}

.classes-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.classes-btn:active {
    transform: scale(0.98);
}

.classes-btn-primary {
    background: linear-gradient(135deg, var(--pastel-btn-primary) 0%, var(--pastel-blue-strong) 100%);
    color: #fff;
    box-shadow: 0 4px 14px rgba(123, 163, 212, 0.35);
}

.classes-btn-primary:hover {
    background: linear-gradient(135deg, var(--pastel-btn-primary-hover) 0%, #6b92c4 100%);
    box-shadow: 0 6px 18px rgba(123, 163, 212, 0.4);
}

.classes-btn-secondary {
    background: #f0ecf5;
    color: var(--pastel-text);
    border: 1px solid var(--pastel-border-soft);
}

.classes-btn-secondary:hover {
    background: #e8e2f0;
    color: var(--pastel-accent-strong);
}

.classes-content {
    min-width: 0;
    background: #fff;
    border-radius: 16px;
    padding: 1.25rem 1.25rem 1.5rem;
    border: 1px solid var(--pastel-border-soft);
    box-shadow: 0 2px 12px rgba(124, 107, 158, 0.06);
}

@media (min-width: 768px) {
    .classes-content {
        padding: 1.5rem 1.5rem 2rem;
    }
}

.classes-content-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.classes-list-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--pastel-text);
}

.classes-count {
    font-size: 0.8125rem;
    color: var(--pastel-text-muted);
    font-weight: 500;
}

.classes-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.classes-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: #faf8fc;
    border: 1px solid var(--pastel-border-soft);
    border-radius: 12px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.classes-card:hover {
    border-color: var(--pastel-border);
    box-shadow: 0 2px 8px rgba(124, 107, 158, 0.06);
}

.classes-card-body {
    flex: 1;
    min-width: 0;
}

.classes-card-name {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--pastel-text);
    background: #fff;
    border: 1px solid var(--pastel-border-soft);
    border-radius: 8px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.classes-card-name:focus {
    outline: none;
    border-color: var(--pastel-blue-strong);
}

.classes-card-teachers {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.5rem;
}

.classes-card-teacher-tag {
    font-size: 0.6875rem;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-weight: 500;
    border: 1px solid transparent;
}

.classes-card-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.classes-card-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    transition: background 0.2s, color 0.2s;
}

.classes-card-btn svg {
    width: 14px;
    height: 14px;
}

.classes-card-btn-students {
    background: #e8e2f0;
    color: var(--pastel-accent-strong);
}

.classes-card-btn-students:hover {
    background: var(--pastel-lavender);
    color: var(--pastel-text);
}

.classes-card-btn-assign {
    background: #e2e8f0;
    color: #475569;
}

.classes-card-btn-assign:hover {
    background: #cbd5e1;
    color: #334155;
}

.classes-card-btn-save {
    background: var(--pastel-mint);
    color: var(--pastel-mint-strong);
}

.classes-card-btn-save:hover {
    background: var(--pastel-mint-strong);
    color: #fff;
}

.classes-card-btn-delete {
    background: #fce8ec;
    color: #be123c;
}

.classes-card-btn-delete:hover {
    background: #fecdd3;
    color: #9f1239;
}

.classes-card-avatar {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--pastel-lavender) 0%, var(--pastel-blue) 100%);
    color: var(--pastel-accent-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 700;
    font-size: 0.9375rem;
}

.classes-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--pastel-text-muted);
}

.classes-empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    border-radius: 16px;
    background: var(--pastel-border-soft);
    color: var(--pastel-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}

.classes-empty-icon svg {
    width: 32px;
    height: 32px;
}

.classes-empty-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--pastel-text);
    margin: 0 0 0.25rem;
}

.classes-empty-text {
    font-size: 0.875rem;
    margin: 0;
}

/* Event detail popup (hover tooltip) - z-index cao nhất để không bị che */
.event-detail-popup {
    font-size: 0.8125rem;
    line-height: 1.5;
    z-index: 99999 !important;
}
.event-detail-popup .line-clamp-3,
.event-detail-popup .line-clamp-6 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.event-detail-popup .line-clamp-3 { -webkit-line-clamp: 3; }
.event-detail-popup .line-clamp-6 { -webkit-line-clamp: 6; }

/* ========== Dashboard responsive – nhiều thiết bị ========== */
.calendar-view-tabs-wrap {
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    max-width: 100%;
}
.calendar-view-tabs-wrap::-webkit-scrollbar {
    height: 4px;
}
.calendar-view-tabs-wrap .pastel-control {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .calendar-dashboard .calendar-app-header {
        padding: 0.75rem 1rem;
        gap: 0.5rem 0.75rem;
        min-height: auto;
    }
    .calendar-dashboard .calendar-header-title {
        font-size: 1.125rem;
        max-width: 12rem;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .calendar-dashboard .calendar-header-bar {
        padding: 1rem 1.25rem;
        gap: 1rem;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
    .calendar-dashboard .pastel-bar {
        padding: 1rem 1.25rem;
    }
    .calendar-dashboard #calendar-controls {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    .calendar-dashboard #calendar-teacher-filter-trigger,
    .calendar-dashboard #calendar-class-filter-trigger,
    .calendar-dashboard #teacher-view-filter-trigger,
    .calendar-dashboard #room-view-filter-trigger {
        min-width: 9rem;
    }
    .calendar-dashboard #modal-event #event-form-center-wrap:not(.hidden) {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 640px) {
    .calendar-dashboard .calendar-app-header {
        padding: 0.625rem 0.75rem;
        gap: 0.5rem;
    }
    .calendar-dashboard .calendar-header-title {
        font-size: 1rem;
        max-width: 8rem;
    }
    .calendar-dashboard #calendar-logo-wrap {
        display: none;
    }
    .calendar-dashboard .calendar-app-header .flex.items-center.gap-2.ml-2 {
        flex-wrap: wrap;
    }
    .calendar-dashboard .calendar-switcher-select {
        min-width: 10rem;
        max-width: 100%;
    }
    .calendar-dashboard .calendar-header-bar {
        padding: 0.75rem 1rem;
        gap: 0.75rem;
        align-items: stretch;
    }
    .calendar-dashboard .calendar-view-tabs-wrap {
        width: 100%;
        max-width: 100%;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control {
        padding: 0.5rem 0.625rem;
        font-size: 0.75rem;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control i {
        width: 1rem;
        height: 1rem;
    }
    .calendar-dashboard .calendar-header-bar .flex.items-center.gap-3.flex-wrap {
        width: 100%;
    }
    .calendar-dashboard #open-teacher,
    .calendar-dashboard #open-room,
    .calendar-dashboard #open-class,
    .calendar-dashboard #open-subjects,
    .calendar-dashboard #open-share,
    .calendar-dashboard #open-event {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
    .calendar-dashboard .pastel-bar {
        padding: 0.75rem 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    .calendar-dashboard .pastel-bar > .flex.items-center.gap-4.flex-wrap {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    .calendar-dashboard #calendar-controls {
        flex-wrap: wrap;
    }
    .calendar-dashboard #calendar-teacher-filter-trigger,
    .calendar-dashboard #calendar-class-filter-trigger,
    .calendar-dashboard #teacher-view-filter-trigger,
    .calendar-dashboard #room-view-filter-trigger {
        min-width: 100%;
        width: 100%;
    }
    .calendar-dashboard #calendar-summary {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    .calendar-dashboard .calendar-app-scroll {
        padding: 0.5rem 0.75rem 1rem;
    }
    .calendar-dashboard .calendar-shell {
        border-radius: 0.75rem;
    }
    .calendar-dashboard #modal-event .calendar-modal-card {
        max-height: 85vh;
    }
    .calendar-dashboard #modal-event #event-form-center-wrap:not(.hidden) {
        grid-template-columns: 1fr;
    }
    .calendar-dashboard .calendar-user-menu-button .user-menu-button-text {
        max-width: 6rem;
    }
    #room-view,
    #teacher-view {
        -webkit-overflow-scrolling: touch;
    }
    #teacher-view th.min-w-\[220px\] {
        min-width: 180px;
    }
    #tasks-view .tasks-main {
        grid-template-columns: 1fr;
    }
    #tasks-view .tasks-sidebar {
        max-width: none;
    }
    #tasks-view .tasks-table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    #reports-view .reports-main .flex.items-center.gap-4.flex-wrap {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .calendar-dashboard .calendar-app-header {
        padding: 0.5rem 0.625rem;
    }
    .calendar-dashboard .calendar-header-title {
        font-size: 0.9375rem;
        max-width: 6rem;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control span {
        display: none;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control {
        padding: 0.5rem 0.75rem;
    }
    .calendar-dashboard .calendar-view-tabs-wrap .pastel-control i {
        width: 1.125rem;
        height: 1.125rem;
    }
    .calendar-dashboard #open-teacher span,
    .calendar-dashboard #open-room span,
    .calendar-dashboard #open-class span,
    .calendar-dashboard #open-subjects span,
    .calendar-dashboard #open-share span {
        display: none;
    }
    .calendar-dashboard #open-event span {
        display: none;
    }
    .calendar-dashboard .pastel-bar #month-label {
        font-size: 1rem;
    }
    .calendar-dashboard #calendar-mode {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
}

@supports (padding: env(safe-area-inset-top)) {
    .calendar-dashboard .calendar-app-header {
        padding-left: max(0.75rem, env(safe-area-inset-left));
        padding-right: max(0.75rem, env(safe-area-inset-right));
    }
    @media (max-width: 640px) {
        .calendar-dashboard .calendar-app-scroll {
            padding-left: max(0.5rem, env(safe-area-inset-left));
            padding-right: max(0.5rem, env(safe-area-inset-right));
        }
    }
}