:root {
    --tcn-ink: #223b5f;
    --tcn-muted: #6e83a1;
    --tcn-border: #d9e1ee;
    --tcn-panel: #f7f9fc;
    --tcn-primary: #5267e8;
}

.tcn-toast-stack { position: fixed; top: 1.25rem; right: 1.25rem; z-index: 1080; width: min(23rem, calc(100vw - 2.5rem)); }
.tcn-toast { display: flex; align-items: flex-start; gap: .75rem; margin-bottom: .75rem; padding: 1rem; color: var(--tcn-ink); background: #fff; border: 1px solid var(--tcn-border); border-left: 4px solid var(--tcn-primary); border-radius: .6rem; box-shadow: 0 12px 28px rgba(30, 54, 88, .16); animation: tcn-toast-in .2s ease-out; }
.tcn-toast--success { border-left-color: #1ca47b; }
.tcn-toast--error { border-left-color: #e85347; }
.tcn-toast__icon { font-size: 1.2rem; line-height: 1.25rem; }
.tcn-toast__message { flex: 1; line-height: 1.35rem; }
.tcn-toast__close { border: 0; background: transparent; color: var(--tcn-muted); cursor: pointer; font-size: 1.2rem; line-height: 1; padding: 0; }
@keyframes tcn-toast-in { from { opacity: 0; transform: translateY(-.5rem); } to { opacity: 1; transform: translateY(0); } }

.attendance-code-modal .modal-dialog { max-width: 650px; }
.attendance-code-modal .modal-content { border: 0; border-radius: .8rem; overflow: hidden; box-shadow: 0 24px 60px rgba(26, 51, 87, .22); }
.attendance-code-modal .modal-header { padding: 1.1rem 1.5rem; border-bottom: 1px solid var(--tcn-border); }
.attendance-code-modal .modal-body { padding: 1.4rem 1.5rem .75rem; }
.attendance-code-modal .modal-footer { padding: 1rem 1.5rem 1.25rem; border-top: 0; }
.attendance-code-modal .form-label { color: var(--tcn-ink); font-size: .83rem; font-weight: 700; letter-spacing: .01em; margin-bottom: .45rem; }
.attendance-code-modal .form-note { color: var(--tcn-muted); font-size: .78rem; margin-top: .35rem; }
.attendance-code-modal .form-control, .attendance-code-modal .select2-container--default .select2-selection--single { min-height: 46px; border-color: var(--tcn-border); border-radius: .45rem; box-shadow: none; }
.attendance-code-modal .select2-container { width: 100% !important; }
.attendance-code-modal .select2-container--default .select2-selection--single { display: flex; align-items: center; }
.attendance-code-modal .select2-container--default .select2-selection--single .select2-selection__rendered { color: var(--tcn-ink); line-height: 44px; padding-left: .9rem; }
.attendance-code-modal .select2-container--default .select2-selection--single .select2-selection__arrow { height: 44px; }
.attendance-code-modal .select2-container--focus .select2-selection--single, .attendance-code-modal .form-control:focus { border-color: var(--tcn-primary); box-shadow: 0 0 0 .18rem rgba(82, 103, 232, .12); }
.attendance-window { margin-top: .25rem; padding: 1rem; background: var(--tcn-panel); border: 1px solid var(--tcn-border); border-radius: .6rem; }
.attendance-window__heading { display: flex; align-items: center; gap: .5rem; margin-bottom: .85rem; color: var(--tcn-ink); font-weight: 700; }
.attendance-window__heading em { color: var(--tcn-primary); font-size: 1.1rem; }
.is-invalid { border-color: #e85347 !important; }

.tcn-code-value { display: inline-block; padding: .25rem .5rem; color: #3953a0; background: #edf1ff; border-radius: .3rem; font-family: monospace; font-size: .84rem; font-weight: 700; letter-spacing: .04em; }
.tcn-empty-value { color: #a4b1c2; font-style: italic; }

.tcn-qr-button { display: inline-flex; align-items: center; gap: .35rem; white-space: nowrap; }
.tcn-empty-row { padding: 2rem !important; color: var(--tcn-muted) !important; text-align: center; }
.attendance-meta { display: flex; flex-wrap: wrap; gap: .65rem 1.5rem; margin-top: .75rem; }
.attendance-meta span { display: flex; flex-direction: column; color: var(--tcn-ink); font-size: .9rem; font-weight: 600; }
.attendance-meta small { margin-bottom: .15rem; color: var(--tcn-muted); font-size: .67rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.announcement-thumb { display: block; width: 116px; height: 61px; object-fit: cover; border: 1px solid var(--tcn-border); border-radius: .35rem; }
.announcement-modal .modal-header, .announcement-modal .modal-body, .announcement-modal .modal-footer { padding-left: 1.5rem; padding-right: 1.5rem; }
.announcement-modal .form-label { color: var(--tcn-ink); font-size: .82rem; font-weight: 700; }
.announcement-modal .form-control { min-height: 42px; border-color: var(--tcn-border); }
.announcement-modal .form-control:focus { border-color: var(--tcn-primary); box-shadow: 0 0 0 .18rem rgba(82, 103, 232, .12); }
.announcement-schedule { padding: 1rem; border: 1px solid var(--tcn-border); border-radius: .55rem; background: var(--tcn-panel); }
.announcement-days { display: flex; flex-wrap: wrap; gap: .5rem; margin: .35rem 0 .6rem; }
.announcement-day { cursor: pointer; margin: 0; }
.announcement-day input { position: absolute; opacity: 0; pointer-events: none; }
.announcement-day span { display: block; padding: .42rem .65rem; color: var(--tcn-muted); border: 1px solid var(--tcn-border); border-radius: 999px; font-size: .76rem; font-weight: 700; }
.announcement-day input:checked + span { color: #fff; border-color: var(--tcn-primary); background: var(--tcn-primary); }

.tcn-page-head .nk-block-between { gap: 1rem; }
.tcn-page-head-actions { display: flex; flex-wrap: wrap; gap: .55rem; justify-content: flex-end; }
.tcn-page-head-actions .btn { white-space: nowrap; }

@media (max-width: 575px) {
    .tcn-toast-stack { top: .75rem; right: .75rem; width: calc(100vw - 1.5rem); }
    .attendance-code-modal .modal-body, .attendance-code-modal .modal-header, .attendance-code-modal .modal-footer { padding-left: 1rem; padding-right: 1rem; }
    .tcn-page-head .nk-block-between { align-items: stretch; flex-direction: column; gap: .9rem; }
    .tcn-page-head .nk-block-head-content { width: 100%; }
    .tcn-page-head .page-title { font-size: 1.75rem; line-height: 1.2; }
    .tcn-page-head .text-soft { margin-bottom: 0; line-height: 1.45; }
    .tcn-page-head-actions { display: grid; grid-template-columns: 1fr; width: 100%; }
    .tcn-page-head-actions .btn { display: inline-flex; align-items: center; justify-content: center; width: 100%; min-height: 46px; white-space: normal; }
}