/* Timetable visual contract. Scoped to its layout; grid status colours stay local. */
.tkb-shell {
    --tkb-primary: #0f766e;
    --tkb-primary-hover: #115e59;
    --tkb-soft: #e6f4f1;
    --tkb-canvas: #f5f7f9;
    --tkb-paper: #fff;
    --tkb-ink: #1e293b;
    --tkb-muted: #64748b;
    --tkb-line: #dce3e8;
    --tkb-radius: 10px;
}
body .tkb-shell > .main-content { background: var(--tkb-canvas); color: var(--tkb-ink); }
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) {
    --tkb-nav-surface: #fff;
    --tkb-nav-border: var(--tkb-line);
    --tkb-nav-text: var(--tkb-ink);
    --tkb-nav-muted: var(--tkb-muted);
    --tkb-nav-accent: var(--tkb-primary);
    --tkb-nav-hover: #f0f7f5;
    --tkb-nav-active: var(--tkb-soft);
    --tkb-nav-icon-bg: #f1f5f4;
    --tkb-nav-focus: #0f766e66;
}
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-dark) {
    --tkb-nav-surface: #152b2d;
    --tkb-nav-border: #30494b;
    --tkb-nav-text: #e2eeed;
    --tkb-nav-muted: #a7bfbc;
    --tkb-nav-accent: #5eead4;
    --tkb-nav-hover: #203d3f;
    --tkb-nav-active: #234b49;
    --tkb-nav-icon-bg: #203d3f;
    --tkb-nav-focus: #5eead466;
}
.layout-wrapper.tkb-shell #tkb-navigation.sidebar { --sidebar-icon: var(--tkb-nav-muted); background: var(--tkb-nav-surface); box-shadow: none; }
.layout-wrapper.tkb-shell #tkb-navigation :is(.modern-btn, .dropdown-title) { box-shadow: none; transform: none; transition: background-color .15s ease, color .15s ease; }
.layout-wrapper.tkb-shell #tkb-navigation :is(.modern-btn, .dropdown-title):hover { background: var(--tkb-nav-hover); box-shadow: none; transform: none; }
.layout-wrapper.tkb-shell #tkb-navigation .modern-btn.active,
.layout-wrapper.tkb-shell #tkb-navigation .modern-btn.active:hover { background: var(--tkb-nav-active); color: var(--tkb-nav-accent) !important; }
.layout-wrapper.tkb-shell #tkb-navigation .modern-btn.active span { color: var(--tkb-nav-accent); }
.layout-wrapper.tkb-shell #tkb-navigation .modern-btn.active::before { background: var(--tkb-nav-accent); }
.layout-wrapper.tkb-shell #tkb-navigation .modern-btn.active .icon-box,
.layout-wrapper.tkb-shell #tkb-navigation .dropdown-content .modern-btn.active .icon-box { color: var(--tkb-nav-accent); background: transparent; }
.layout-wrapper.tkb-shell #tkb-navigation .icon-box { box-shadow: none; transform: none; }
.layout-wrapper.tkb-shell #tkb-navigation .dropdown-menu-block:has(.modern-btn.active) > .dropdown-title { color: var(--tkb-nav-accent); background: var(--tkb-nav-hover); }
/* Match the legacy :has(#tkb-navigation) specificity, including nested labels.
   Otherwise its white active text wins even though this sheet loads last. */
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) #tkb-navigation :is(.modern-btn:hover, .modern-btn.active, .dropdown-title:hover),
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) #tkb-navigation :is(.modern-btn:hover, .modern-btn.active, .dropdown-title:hover) :is(span, i, .icon-box) {
    color: #115e59 !important;
    -webkit-text-fill-color: #115e59;
}
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) #tkb-navigation .modern-btn.active,
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) #tkb-navigation .modern-btn.active:hover {
    background: var(--tkb-soft);
}
.layout-wrapper.tkb-shell:has(#tkb-navigation.sidebar-light) #tkb-navigation .modern-btn.active::before {
    background: #115e59;
}
.layout-wrapper.tkb-shell #tkb-navigation :is(.collapse-btn, .theme-toggle-btn) { border-radius: 8px; box-shadow: none; transform: none; }
/* Less decorative title treatment, including pages embedded in workflow dialogs. */
body .tkb-shell .page-header-box.page-header-box {
    --td-icon: 44px;
    --td-gap: .8rem;
    margin-bottom: .75rem !important;
    padding: 1rem 1.2rem !important;
    border: 1px solid #146f68;
    border-radius: var(--tkb-radius);
    background: linear-gradient(110deg, #115e59, #0f766e);
    box-shadow: 0 2px 6px #1e293b0d;
    transform: none;
    transition: none;
}
body .tkb-shell .page-header-box.page-header-box::after { display: none; }
body .tkb-shell .page-header-title.page-header-title { font-size: clamp(1.15rem, 1.6vw, 1.4rem); letter-spacing: 0; }
body .tkb-shell .page-header-title.page-header-title::before { border-radius: 10px; background-size: 36px 36px, auto; box-shadow: none; transform: none; transition: none; }
body .tkb-shell .page-header-title.page-header-title::after { color: #d9eeea; -webkit-text-fill-color: #d9eeea; font-size: .8rem; }
body .tkb-shell .page-underline.page-underline { display: none; }
/* Bridge existing entry-page tokens to the common palette. */
.tkb-shell .tkb-data-entry {
    --entry-primary: var(--tkb-primary);
    --entry-primary-dark: var(--tkb-primary-hover);
    --entry-soft: var(--tkb-soft);
    --entry-ink: var(--tkb-ink);
    --entry-muted: var(--tkb-muted);
    --entry-line: var(--tkb-line);
}
.tkb-shell .main-content :is(.card, .lop-card, .tkb-card, .diemtruong-card, .pcnv-card, .grade-card, .qcard, .form-card, .tkb-toolbar__panel) {
    border-color: var(--tkb-line);
    border-radius: var(--tkb-radius);
    background: var(--tkb-paper);
    box-shadow: none;
}
.tkb-shell .main-content :is(.card-header, .diemtruong-card-header, .pcnv-card-header, .lop-campus-title, .pcnvn-report-head, .qdata-heading) {
    color: var(--tkb-ink);
    background: #f0f6f5;
    border-color: var(--tkb-line);
    box-shadow: none;
}
/* Data headings only: timetable cells retain subject/constraint colours. */
.tkb-shell .tkb-data-entry table thead th { background: #f0f6f5 !important; color: var(--tkb-ink) !important; border-color: var(--tkb-line) !important; }
.tkb-shell .main-content :is(.btn-primary, .qbtn-primary, .btn-save, .btn-add):not(:disabled) {
    background: var(--tkb-primary) !important; border-color: var(--tkb-primary) !important; color: #fff !important; box-shadow: none; text-shadow: none;
}
.tkb-shell .main-content :is(.btn-primary, .qbtn-primary, .btn-save, .btn-add):hover:not(:disabled) { background: var(--tkb-primary-hover) !important; border-color: var(--tkb-primary-hover) !important; }
.tkb-shell .main-content :is(.btn-outline-primary, .btn-outline-secondary, .btn-secondary, .btn-next, .btn-reset, .qbtn-outline, .qbtn-ghost) {
    color: var(--tkb-primary-hover) !important; background: var(--tkb-paper) !important; border-color: var(--tkb-line) !important; box-shadow: none;
}
.tkb-shell .main-content :is(.btn-outline-primary, .btn-outline-secondary, .btn-secondary, .btn-next, .btn-reset, .qbtn-outline, .qbtn-ghost):hover:not(:disabled) { background: var(--tkb-soft) !important; border-color: #9fcac2 !important; }
.tkb-shell .main-content :is(.btn, .lop-btn, .qbtn) { border-radius: 6px; }
.tkb-shell .main-content :is(.btn, .lop-btn, .qbtn):focus-visible { outline: 2px solid var(--tkb-primary); outline-offset: 3px; }
/* Toolbar uses quiet surfaces instead of a separate gradient for each action. */
.tkb-shell .tkb-toolbar .tkb-toolbar-btn { background: #fff !important; color: var(--tkb-primary-hover) !important; border-color: var(--tkb-line) !important; box-shadow: none !important; }
.tkb-shell .tkb-toolbar .tkb-toolbar-btn:hover:not(:disabled) { background: var(--tkb-soft) !important; transform: none; filter: none; }
.tkb-shell .tkb-toolbar .tkb-toolbar-btn::before { display: none; }
@media (max-width: 575.98px) {
    body .tkb-shell .page-header-box.page-header-box { --td-icon: 38px; --td-gap: .65rem; padding: .85rem !important; }
    body .tkb-shell .page-header-title.page-header-title::after { font-size: .73rem; }
}
@media print {
    body .tkb-shell > .main-content { background: #fff; }
    body .tkb-shell .page-header-box.page-header-box { background: #fff !important; border-color: #64748b; box-shadow: none; }
    body .tkb-shell .page-header-title.page-header-title { color: #1e293b !important; }
    body .tkb-shell .page-header-title.page-header-title::after { color: #64748b; -webkit-text-fill-color: #64748b; }
}
/* Destructive toolbar actions keep their semantic colour. */
.tkb-shell .tkb-toolbar .tkb-toolbar-btn--danger { color: #b73540 !important; border-color: #e6bfc3 !important; background: #fff3f3 !important; }
.tkb-shell .tkb-toolbar .tkb-toolbar-btn--danger:hover:not(:disabled) { background: #ffe4e6 !important; }
.tkb-shell .qltth { --teal-700: var(--tkb-primary); --teal-800: var(--tkb-primary-hover); --ink: var(--tkb-ink); --muted: var(--tkb-muted); --line: var(--tkb-line); --bg: var(--tkb-canvas); --radius: var(--tkb-radius); }
.tkb-shell .qltth-header { border-bottom: 1px solid var(--tkb-primary); box-shadow: none; background: linear-gradient(110deg, #115e59, #0f766e); }
.tkb-shell .qltth-title i { color: #ccfbf1; }
.tkb-shell .main-content :is(.teacher-limit-card, .quick-workspace, .pcnvn-report, .pcnvn-gv-sidebar) { border-color: var(--tkb-line); border-radius: var(--tkb-radius); background: #fff; box-shadow: none; }
.tkb-shell .quick-heading { border-color: #146f68; background: linear-gradient(110deg, #115e59, #0f766e); box-shadow: none; padding: 20px 24px; border-radius: var(--tkb-radius); }
.tkb-shell .quick-heading :is(small, .quick-logo) { color: #ccfbf1; }
.tkb-shell .quick-logo { border-color: #ffffff33; box-shadow: none; }
.tkb-shell .quick-heading h1::after { display: none; }
.tkb-shell .quick-desktop { background: var(--tkb-canvas); }
.tkb-shell .quick-toolbar { background: #f0f6f5; border-color: var(--tkb-line); }