/* ========================================================================
   NBS UI — shared design kit for NBS portals (My NBS, FYP, accounts, …)
   Mobile first: base rules are for phones; wider screens add via min-width.
   Breakpoints: 640px (large phone / small tablet), 1024px (desktop), 1280px (wide).

   1. Fonts          2. Tokens (light, dark, portal accents)
   3. Bootstrap map  4. Base
   5. Shell          6. Menus and ⌘K
   7. Components     8. Auth
   9. Motion
======================================================================== */

/* ---------- 1. Fonts ---------------------------------------------------- */
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/plus-jakarta-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 800; font-style: normal; font-display: swap;
}

/* ---------- 2. Tokens --------------------------------------------------- */
/* --brand-primary is the portal colour. Branding settings may override it inline. */
:root {
  color-scheme: light;
  --brand-primary: #1a365d;          /* My NBS: NUST navy */
  --brand-accent:  #b7791f;          /* shared gold highlight */

  --primary:       var(--brand-primary);
  --primary-hover: color-mix(in srgb, var(--brand-primary) 82%, #000);
  --primary-soft:  color-mix(in srgb, var(--brand-primary) 9%, #fff);
  --primary-ink:   color-mix(in srgb, var(--brand-primary) 88%, #000);
  --on-primary:    #ffffff;
  --accent:        var(--brand-accent);
  --accent-soft:   color-mix(in srgb, var(--brand-accent) 12%, #fff);
  --accent-ink:    color-mix(in srgb, var(--brand-accent) 75%, #000);
  --hero: linear-gradient(135deg,
            color-mix(in srgb, var(--brand-primary) 70%, #000) 0%,
            var(--brand-primary) 60%,
            color-mix(in srgb, var(--brand-primary) 80%, #2b6cb0) 100%);

  --success: #15803d; --success-soft: #eaf6ee; --success-ink: #166534;
  --warning: #b45309; --warning-soft: #fdf4e7; --warning-ink: #92400e;
  --danger:  #b91c1c; --danger-soft:  #fdeeee; --danger-ink:  #991b1b;
  --info:    #0369a1; --info-soft:    #eaf3fa; --info-ink:    #075985;

  /* Warm stone neutrals, shared by every portal */
  --bg:            #f6f6f3;
  --surface:       #ffffff;
  --surface-2:     #fafaf8;
  --surface-3:     #f1f0ec;
  --surface-glass: rgba(255, 255, 255, .84);
  --border:        #e7e5df;
  --border-strong: #d6d3cb;
  --text:          #1c1a17;
  --text-2:        #45413b;
  --muted:         #6f6a63;

  --side-bg: var(--surface); --side-line: #ecebe6; --side-hover: #f3f2ee;
  --side-text: var(--text-2); --side-text-hi: var(--text); --side-muted: #8a857e;
  --side-active-bg: var(--primary-soft); --side-active-fg: var(--primary-ink);

  --r-sm: 6px; --r-md: 10px; --r-lg: 14px; --r-xl: 18px; --r-pill: 999px;
  --shadow-xs: 0 1px 1px rgba(28, 26, 23, .04);
  --shadow-sm: 0 1px 2px rgba(28, 26, 23, .05), 0 0 0 1px rgba(28, 26, 23, .02);
  --shadow-md: 0 6px 16px -6px rgba(28, 26, 23, .12), 0 1px 3px rgba(28, 26, 23, .05);
  --shadow-lg: 0 18px 40px -14px rgba(28, 26, 23, .22), 0 2px 6px rgba(28, 26, 23, .05);
  --ring: 0 0 0 3px color-mix(in srgb, var(--primary) 24%, transparent);

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Plus Jakarta Sans", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --dur-1: .12s; --dur-2: .18s; --dur-3: .28s;

  --nav-h: 60px;
  --side-w: 256px;
  --side-w-collapsed: 72px;
  --side-gap: 10px;
  --tabbar-h: 62px;
  --tap: 44px;                 /* minimum touch target */
  --gutter: 16px;
}

/* Other portals only swap the brand colour. */
:root[data-portal="fyp"]      { --brand-primary: #0f766e; }
:root[data-portal="accounts"] { --brand-primary: #1a365d; }
:root[data-portal="alumni"]   { --brand-primary: #7a5410; }   /* NBS gold, deep enough for white text */

:root[data-theme="dark"] {
  color-scheme: dark;
  --primary:       color-mix(in srgb, var(--brand-primary) 38%, #c7dbff);
  --primary-hover: color-mix(in srgb, var(--brand-primary) 20%, #dce8ff);
  --primary-soft:  color-mix(in srgb, var(--brand-primary) 40%, transparent);
  --primary-ink:   color-mix(in srgb, var(--brand-primary) 18%, #dce8ff);
  --on-primary:    #0b1626;
  --accent:        #e0a84a;
  --accent-soft:   rgba(224, 168, 74, .14);
  --accent-ink:    #f2c77d;
  --hero: linear-gradient(135deg, #0d1522 0%, color-mix(in srgb, var(--brand-primary) 70%, #0d1522) 100%);

  --success: #4ade80; --success-soft: rgba(74, 222, 128, .12); --success-ink: #86efac;
  --warning: #fbbf24; --warning-soft: rgba(251, 191, 36, .12); --warning-ink: #fcd34d;
  --danger:  #f87171; --danger-soft:  rgba(248, 113, 113, .12); --danger-ink:  #fca5a5;
  --info:    #38bdf8; --info-soft:    rgba(56, 189, 248, .12); --info-ink:    #7dd3fc;

  --bg:            #0e1011;
  --surface:       #151819;
  --surface-2:     #1a1d1e;
  --surface-3:     #212526;
  --surface-glass: rgba(21, 24, 25, .84);
  --border:        #272b2c;
  --border-strong: #353a3b;
  --text:          #ecedeb;
  --text-2:        #c4c7c4;
  --muted:         #949995;

  --side-bg: #121516; --side-line: #24282a; --side-hover: #1c2021;
  --side-muted: #7f8481;

  --shadow-xs: 0 1px 1px rgba(0, 0, 0, .3);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35), 0 0 0 1px rgba(255, 255, 255, .02);
  --shadow-md: 0 6px 16px -6px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .03);
  --shadow-lg: 0 18px 40px -14px rgba(0, 0, 0, .7), 0 0 0 1px rgba(255, 255, 255, .04);
}

/* Names older stylesheet rules (aqop.css) and inline view styles still use. */
:root {
  --body-bg: var(--bg);
  --surface-muted: var(--surface-2);
  --surface-elevated: var(--surface);
  --border-light: var(--border);
  --text-primary: var(--text);
  --text-secondary: var(--text-2);
  --text-muted: var(--muted);
  --text-inverse: #fff;
  --primary-light: var(--primary-soft);
  --primary-ink-hover: var(--primary-hover);
  --secondary: var(--text-2);
  --secondary-ink: var(--text-2);
  --accent-hover: var(--accent-ink);
  --success-light: var(--success-soft);
  --warning-light: var(--warning-soft);
  --danger-light: var(--danger-soft);
  --info-light: var(--info-soft);
  --radius-sm: var(--r-sm); --radius: var(--r-md); --radius-lg: var(--r-lg); --radius-xl: var(--r-xl);
  --shadow: var(--shadow-md);
  --transition: var(--dur-2) ease;
  --focus-ring: var(--ring);
  --font-size-xs: .75rem; --font-size-sm: .875rem; --font-size-base: .9375rem;
  --font-size-lg: 1.125rem; --font-size-xl: 1.25rem; --font-size-2xl: 1.5rem;
  --line-height: 1.55;
  --content-max-width: 1320px;
  --topbar-height: var(--nav-h);
  --bottom-nav-height: var(--tabbar-h);
}

/* ---------- 3. Bootstrap map ------------------------------------------- */
/* Every existing Bootstrap view picks up the kit through these variables. */
:root, [data-bs-theme] {
  --bs-body-font-family: var(--font-sans);
  --bs-body-font-size: .9375rem;
  --bs-body-line-height: 1.55;
  --bs-body-color: var(--text);
  --bs-body-bg: var(--bg);
  --bs-emphasis-color: var(--text);
  --bs-secondary-color: var(--muted);
  --bs-tertiary-color: var(--muted);
  --bs-secondary-bg: var(--surface-3);
  --bs-tertiary-bg: var(--surface-2);
  --bs-heading-color: var(--text);
  --bs-link-color: var(--primary);
  --bs-link-color-rgb: var(--primary);
  --bs-link-hover-color: var(--primary-hover);
  --bs-border-color: var(--border);
  --bs-border-color-translucent: var(--border);
  --bs-border-radius: var(--r-md);
  --bs-border-radius-sm: var(--r-sm);
  --bs-border-radius-lg: var(--r-lg);
  --bs-border-radius-xl: var(--r-xl);
  --bs-box-shadow-sm: var(--shadow-sm);
  --bs-box-shadow: var(--shadow-md);
  --bs-box-shadow-lg: var(--shadow-lg);
  --bs-focus-ring-color: color-mix(in srgb, var(--primary) 24%, transparent);
  --bs-primary-text-emphasis: var(--primary-ink);
  --bs-primary-bg-subtle: var(--primary-soft);
  --bs-primary-border-subtle: color-mix(in srgb, var(--primary) 30%, var(--border));
  --bs-success-bg-subtle: var(--success-soft);
  --bs-warning-bg-subtle: var(--warning-soft);
  --bs-danger-bg-subtle: var(--danger-soft);
  --bs-info-bg-subtle: var(--info-soft);
  --bs-success-text-emphasis: var(--success-ink);
  --bs-warning-text-emphasis: var(--warning-ink);
  --bs-danger-text-emphasis: var(--danger-ink);
  --bs-info-text-emphasis: var(--info-ink);
}

.card {
  --bs-card-bg: var(--surface);
  --bs-card-color: var(--text);
  --bs-card-border-color: var(--border);
  --bs-card-border-radius: var(--r-lg);
  --bs-card-inner-border-radius: calc(var(--r-lg) - 1px);
  --bs-card-cap-bg: transparent;
  --bs-card-spacer-x: 1.125rem;
  --bs-card-spacer-y: 1rem;
  box-shadow: var(--shadow-sm);
}
.card-header { font-weight: 650; border-bottom-color: var(--border); }
.card-footer { border-top-color: var(--border); background: var(--surface-2); }

.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text);
  --bs-table-border-color: var(--border);
  --bs-table-striped-bg: var(--surface-2);
  --bs-table-hover-bg: var(--surface-3);
  --bs-table-active-bg: var(--primary-soft);
  font-size: .9rem;
}
.table > thead th, .table > thead td {
  font-size: .75rem; font-weight: 650; letter-spacing: .04em; text-transform: uppercase;
  color: var(--muted); background: var(--surface-2); white-space: nowrap;
}
.table-light, [data-theme="dark"] .table-light { --bs-table-bg: var(--surface-2); --bs-table-color: var(--text); --bs-table-border-color: var(--border); }

.btn {
  --bs-btn-font-weight: 600;
  --bs-btn-border-radius: var(--r-md);
  --bs-btn-focus-box-shadow: var(--ring);
  min-height: 38px;
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
}
.btn-sm { min-height: 32px; }
.btn-lg { min-height: var(--tap); }
.btn-primary {
  --bs-btn-color: var(--on-primary); --bs-btn-bg: var(--primary); --bs-btn-border-color: var(--primary);
  --bs-btn-hover-color: var(--on-primary); --bs-btn-hover-bg: var(--primary-hover); --bs-btn-hover-border-color: var(--primary-hover);
  --bs-btn-active-color: var(--on-primary); --bs-btn-active-bg: var(--primary-hover); --bs-btn-active-border-color: var(--primary-hover);
  --bs-btn-disabled-color: var(--on-primary); --bs-btn-disabled-bg: var(--primary); --bs-btn-disabled-border-color: var(--primary);
}
.btn-outline-primary {
  --bs-btn-color: var(--primary); --bs-btn-border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  --bs-btn-hover-color: var(--on-primary); --bs-btn-hover-bg: var(--primary); --bs-btn-hover-border-color: var(--primary);
  --bs-btn-active-color: var(--on-primary); --bs-btn-active-bg: var(--primary-hover); --bs-btn-active-border-color: var(--primary-hover);
}
.btn-secondary, .btn-light, .btn-outline-secondary {
  --bs-btn-color: var(--text); --bs-btn-bg: var(--surface); --bs-btn-border-color: var(--border-strong);
  --bs-btn-hover-color: var(--text); --bs-btn-hover-bg: var(--surface-3); --bs-btn-hover-border-color: var(--border-strong);
  --bs-btn-active-color: var(--text); --bs-btn-active-bg: var(--surface-3); --bs-btn-active-border-color: var(--border-strong);
}
.btn-success { --bs-btn-bg: var(--success); --bs-btn-border-color: var(--success); --bs-btn-hover-bg: var(--success-ink); --bs-btn-hover-border-color: var(--success-ink); }
.btn-danger  { --bs-btn-bg: var(--danger);  --bs-btn-border-color: var(--danger);  --bs-btn-hover-bg: var(--danger-ink);  --bs-btn-hover-border-color: var(--danger-ink); }
[data-theme="dark"] .btn-success, [data-theme="dark"] .btn-danger { --bs-btn-color: #0b0d0e; --bs-btn-hover-color: #0b0d0e; }
.btn-link { --bs-btn-color: var(--primary); --bs-btn-hover-color: var(--primary-hover); }

.form-control, .form-select {
  min-height: 40px;
  color: var(--text); background-color: var(--surface);
  border-color: var(--border-strong); border-radius: var(--r-md);
}
.form-control::placeholder { color: color-mix(in srgb, var(--muted) 80%, transparent); }
.form-control:focus, .form-select:focus, .form-check-input:focus {
  border-color: color-mix(in srgb, var(--primary) 60%, var(--border));
  box-shadow: var(--ring);
}
.form-control-sm, .form-select-sm { min-height: 32px; }
.form-label { font-weight: 600; font-size: .875rem; color: var(--text-2); margin-bottom: .375rem; }
.form-text { color: var(--muted); }
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
.input-group-text { background: var(--surface-2); border-color: var(--border-strong); color: var(--muted); }

.dropdown-menu {
  --bs-dropdown-bg: var(--surface);
  --bs-dropdown-color: var(--text);
  --bs-dropdown-border-color: var(--border);
  --bs-dropdown-border-radius: var(--r-lg);
  --bs-dropdown-link-color: var(--text);
  --bs-dropdown-link-hover-bg: var(--surface-3);
  --bs-dropdown-link-hover-color: var(--text);
  --bs-dropdown-link-active-bg: var(--primary-soft);
  --bs-dropdown-link-active-color: var(--primary-ink);
  --bs-dropdown-divider-bg: var(--border);
  --bs-dropdown-header-color: var(--muted);
  padding: 6px; box-shadow: var(--shadow-lg);
}
.dropdown-item { border-radius: var(--r-sm); padding: .5rem .625rem; }
.modal { --bs-modal-bg: var(--surface); --bs-modal-border-color: var(--border); --bs-modal-border-radius: var(--r-xl); --bs-modal-header-border-color: var(--border); --bs-modal-footer-border-color: var(--border); }
.list-group { --bs-list-group-bg: var(--surface); --bs-list-group-color: var(--text); --bs-list-group-border-color: var(--border); --bs-list-group-action-hover-bg: var(--surface-2); --bs-list-group-action-hover-color: var(--text); --bs-list-group-active-bg: var(--primary); --bs-list-group-active-border-color: var(--primary); }
.nav-tabs { --bs-nav-tabs-border-color: var(--border); --bs-nav-tabs-link-active-bg: var(--surface); --bs-nav-tabs-link-active-color: var(--text); --bs-nav-tabs-link-active-border-color: var(--border) var(--border) var(--surface); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--primary); --bs-nav-pills-link-active-color: var(--on-primary); }
.nav-link { --bs-nav-link-color: var(--text-2); --bs-nav-link-hover-color: var(--primary); }
.pagination { --bs-pagination-color: var(--text-2); --bs-pagination-bg: var(--surface); --bs-pagination-border-color: var(--border); --bs-pagination-hover-bg: var(--surface-3); --bs-pagination-hover-color: var(--text); --bs-pagination-active-bg: var(--primary); --bs-pagination-active-border-color: var(--primary); --bs-pagination-active-color: var(--on-primary); --bs-pagination-disabled-bg: var(--surface-2); --bs-pagination-disabled-color: var(--muted); --bs-pagination-border-radius: var(--r-md); }
.accordion { --bs-accordion-bg: var(--surface); --bs-accordion-color: var(--text); --bs-accordion-border-color: var(--border); --bs-accordion-btn-color: var(--text); --bs-accordion-active-bg: var(--surface-2); --bs-accordion-active-color: var(--text); --bs-accordion-btn-focus-box-shadow: var(--ring); }
.alert { --bs-alert-border-radius: var(--r-md); }
.badge { font-weight: 650; letter-spacing: .01em; border-radius: var(--r-pill); }
.bg-primary { background-color: var(--primary) !important; color: var(--on-primary); }
.text-primary { color: var(--primary) !important; }
.border-primary { border-color: var(--primary) !important; }
.bg-light, .bg-white { background-color: var(--surface-2) !important; color: var(--text); }
.bg-body, .bg-body-tertiary { background-color: var(--surface-2) !important; }
.text-muted, .text-body-secondary { color: var(--muted) !important; }
.text-dark, .text-body, .link-dark { color: var(--text) !important; }
.border, .border-top, .border-bottom, .border-start, .border-end { border-color: var(--border) !important; }

/* ---------- 4. Base ----------------------------------------------------- */
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv11", "ss01";
}
h1, h2, h3, h4, h5, .h1, .h2, .h3, .h4, .h5 { font-family: var(--font-display); letter-spacing: -.015em; color: var(--text); }
a { color: var(--primary); text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }
::selection { background: color-mix(in srgb, var(--primary) 26%, transparent); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
code { color: var(--accent-ink); }
.nbs-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.nbs-skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 500;
  padding: 10px 16px; border-radius: var(--r-md);
  background: var(--primary); color: var(--on-primary); font-weight: 700;
  transition: top var(--dur-2) var(--ease-out);
}
.nbs-skip-link:focus { top: 12px; color: var(--on-primary); }
.nbs-kbd {
  display: inline-flex; align-items: center; padding: 2px 6px; border-radius: 6px;
  background: var(--surface-3); border: 1px solid var(--border);
  font: 600 11px/1.4 var(--font-sans); color: var(--muted);
}

/* ---------- 5. Shell ---------------------------------------------------- */
/* Phone: top bar + bottom tab bar, sidebar as a drawer.
   ≥640px: no tab bar (hamburger instead). ≥1024px: floating sidebar beside the content. */

.nbs-icon-btn {
  position: relative; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0;
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface); color: var(--text-2);
  font-size: 1.125rem; cursor: pointer;
  transition: color var(--dur-1) ease, border-color var(--dur-1) ease, transform var(--dur-1) ease;
}
.nbs-icon-btn:hover { color: var(--primary); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.nbs-icon-btn:active { transform: scale(.94); }
.nbs-icon-btn--quiet { border-color: transparent; background: transparent; }
.nbs-count-dot {
  position: absolute; top: -5px; right: -5px;
  min-width: 18px; height: 18px; padding: 0 5px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-pill); background: var(--danger); color: #fff;
  font-size: 10px; font-weight: 800; box-shadow: 0 0 0 2px var(--bg);
}
[data-theme="dark"] .nbs-count-dot { color: #0b0d0e; }

/* Top bar */
.nbs-topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: calc(var(--nav-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) max(12px, env(safe-area-inset-right)) 0 max(12px, env(safe-area-inset-left));
  display: flex; align-items: center; gap: 8px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  transition: left var(--dur-2) var(--ease-out), box-shadow var(--dur-2) ease;
}
body.is-scrolled .nbs-topbar { box-shadow: 0 1px 0 var(--border); }
.nbs-topbar__title { min-width: 0; flex: 1 1 auto; display: flex; flex-direction: column; line-height: 1.2; }
.nbs-topbar__title h1 {
  margin: 0; font-size: 1rem; font-weight: 700;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.nbs-topbar__actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
/* The page header carries the big title; the bar's small title appears once it scrolls away. */
.nbs-topbar__heading { margin: 0; font-size: .95rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; opacity: 0; transform: translateY(4px); transition: opacity var(--dur-2) ease, transform var(--dur-2) var(--ease-out); }
body.is-scrolled .nbs-topbar__heading { opacity: 1; transform: none; }
.nbs-topbar__title .nbs-crumbs + .nbs-topbar__heading { font-size: .875rem; }
.nbs-theme-icon--dark, :root[data-theme="dark"] .nbs-theme-icon--light { display: none; }
:root[data-theme="dark"] .nbs-theme-icon--dark { display: inline-block; }
.nbs-topbar__menu-btn { display: none; }

/* Breadcrumb trail (in the top bar on wide screens, above the page on phones) */
.nbs-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; margin: 0; padding: 0; list-style: none; font-size: .78rem; color: var(--muted); }
.nbs-crumbs a { color: var(--muted); text-decoration: none; }
.nbs-crumbs a:hover { color: var(--primary); }
.nbs-crumbs li + li::before { content: "/"; margin-right: 4px; opacity: .5; }
.nbs-crumbs [aria-current] { color: var(--text-2); }
.nbs-topbar .nbs-crumbs-nav { display: none; }
.nbs-topbar__brand { display: inline-flex; text-decoration: none; }

/* ⌘K trigger: an icon on phones, a search field on desktop */
.nbs-cmdk-trigger {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  width: 40px; height: 40px; padding: 0;
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface); color: var(--muted);
  font: inherit; font-size: .875rem; cursor: pointer;
  transition: border-color var(--dur-1) ease, box-shadow var(--dur-1) ease;
}
.nbs-cmdk-trigger:hover { border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.nbs-cmdk-trigger .label, .nbs-cmdk-trigger .nbs-kbd { display: none; }

/* Sidebar (drawer on phones/tablets) */
.nbs-sidebar {
  position: fixed; z-index: 140;
  top: calc(var(--side-gap) + env(safe-area-inset-top));
  bottom: calc(var(--side-gap) + env(safe-area-inset-bottom));
  left: var(--side-gap);
  width: min(var(--side-w), calc(100vw - 48px));
  display: flex; flex-direction: column;
  background: var(--side-bg); color: var(--side-text);
  border: 1px solid var(--side-line); border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  transform: translateX(calc(-100% - 24px));
  transition: transform var(--dur-3) var(--ease-out), width var(--dur-2) var(--ease-out);
}
body.nbs-drawer-open .nbs-sidebar { transform: none; }
.nbs-scrim {
  position: fixed; inset: 0; z-index: 135;
  background: rgba(11, 10, 20, .45);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur-2) ease, visibility var(--dur-2) ease;
}
body.nbs-drawer-open .nbs-scrim { opacity: 1; visibility: visible; }
body.nbs-drawer-open { overflow: hidden; }

.nbs-sidebar__head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 14px 12px 8px 14px; }
.nbs-brand { display: flex; align-items: center; gap: 10px; min-width: 0; color: var(--side-text-hi); font-family: var(--font-display); font-weight: 700; font-size: .95rem; text-decoration: none; }
.nbs-brand:hover { color: var(--side-text-hi); }
.nbs-brand__mark {
  width: 34px; height: 34px; flex: 0 0 34px; display: grid; place-items: center;
  border-radius: 9px; background: var(--primary); color: var(--on-primary);
  font-size: .78rem; font-weight: 800; letter-spacing: -.02em; overflow: hidden;
}
.nbs-brand__mark img { width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 4px; }
.nbs-brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.nbs-brand__name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-brand__sub { font-family: var(--font-sans); font-weight: 500; font-size: .72rem; color: var(--side-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-sidebar__collapse { display: none; }

/* Academic context card */
.nbs-context { position: relative; margin: 4px 10px 6px; }
.nbs-context__btn {
  width: 100%; display: flex; align-items: center; gap: 10px;
  min-height: var(--tap); padding: 8px 10px; border-radius: var(--r-md);
  background: var(--surface-2); border: 1px solid var(--side-line);
  color: var(--side-text-hi); font: inherit; text-align: left; cursor: pointer;
}
.nbs-context__btn:hover { border-color: var(--border-strong); }
.nbs-context__icon { width: 28px; height: 28px; flex: 0 0 28px; display: grid; place-items: center; border-radius: 8px; background: var(--primary-soft); color: var(--primary-ink); }
.nbs-context__text { display: flex; flex-direction: column; min-width: 0; flex: 1; line-height: 1.25; }
.nbs-context__text small { color: var(--side-muted); font-size: .7rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-context__text strong { font-size: .84rem; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-context__chev { color: var(--side-muted); }
.nbs-context .nbs-menu { left: 0; right: 0; top: calc(100% + 6px); }

/* Nav */
.nbs-nav {
  flex: 1 1 auto; min-height: 0; overflow-y: auto; overflow-x: hidden;
  padding: 4px 10px 12px;
  scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent;
  overscroll-behavior: contain;
}
.nbs-nav__group + .nbs-nav__group { margin-top: 6px; }
.nbs-nav__heading {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  min-height: 34px; padding: 10px 10px 4px; margin: 0;
  border: 0; background: none; cursor: pointer;
  font: 600 .69rem/1 var(--font-sans); letter-spacing: .07em; text-transform: uppercase; color: var(--side-muted);
}
.nbs-nav__heading:hover { color: var(--side-text-hi); }
.nbs-nav__heading .bi { font-size: .7rem; transition: transform var(--dur-2) var(--ease-out); }
.nbs-nav__group.is-closed .nbs-nav__heading .bi { transform: rotate(-90deg); }
.nbs-nav__group.is-closed .nbs-nav__items { display: none; }
.nbs-nav__items { display: flex; flex-direction: column; gap: 1px; }
.nbs-nav-link {
  position: relative; display: flex; align-items: center; gap: 11px;
  min-height: 40px; padding: 8px 10px; border-radius: var(--r-md);
  color: var(--side-text); font-size: .875rem; font-weight: 500; white-space: nowrap; text-decoration: none;
  transition: background var(--dur-1) ease, color var(--dur-1) ease;
}
.nbs-nav-link .bi { font-size: 1.05rem; width: 20px; text-align: center; color: var(--side-muted); transition: color var(--dur-1) ease; }
.nbs-nav-link__label { overflow: hidden; text-overflow: ellipsis; }
.nbs-nav-link:hover { background: var(--side-hover); color: var(--side-text-hi); }
.nbs-nav-link:hover .bi { color: var(--side-text-hi); }
.nbs-nav-link.is-active { background: var(--side-active-bg); color: var(--side-active-fg); font-weight: 600; }
.nbs-nav-link.is-active .bi { color: var(--side-active-fg); }
.nbs-nav-link.is-active::before {
  content: ""; position: absolute; left: -10px; top: 9px; bottom: 9px; width: 3px;
  border-radius: 0 3px 3px 0; background: var(--primary);
}
.nbs-nav-link__count { margin-left: auto; min-width: 20px; padding: 0 6px; border-radius: var(--r-pill); background: var(--surface-3); color: var(--text-2); font-size: .69rem; font-weight: 700; line-height: 20px; text-align: center; }

/* Main */
.nbs-main {
  min-height: 100vh; min-height: 100dvh;
  padding: calc(var(--nav-h) + env(safe-area-inset-top) + 8px) max(var(--gutter), env(safe-area-inset-right))
           calc(var(--tabbar-h) + 32px + env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-left));
  transition: margin-left var(--dur-2) var(--ease-out);
}
.nbs-main__inner { max-width: 1320px; margin: 0 auto; }
.nbs-main__inner > .nbs-crumbs-nav { margin-bottom: 10px; }

/* Phone tab bar */
.nbs-tabbar {
  position: fixed; z-index: 110;
  left: max(10px, env(safe-area-inset-left)); right: max(10px, env(safe-area-inset-right));
  bottom: calc(10px + env(safe-area-inset-bottom));
  height: var(--tabbar-h);
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; padding: 6px;
  background: var(--surface-glass);
  -webkit-backdrop-filter: saturate(160%) blur(16px); backdrop-filter: saturate(160%) blur(16px);
  border: 1px solid var(--border); border-radius: var(--r-xl); box-shadow: var(--shadow-lg);
}
.nbs-tab {
  position: relative; min-width: 0; padding: 0 2px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  border: 0; border-radius: var(--r-md); background: transparent;
  color: var(--muted); font: 600 .66rem/1.1 var(--font-sans); text-decoration: none; cursor: pointer;
  transition: color var(--dur-1) ease, background var(--dur-1) ease;
}
.nbs-tab .bi { font-size: 1.25rem; }
.nbs-tab span { max-width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-tab:hover { color: var(--text); }
.nbs-tab.is-active { color: var(--primary); background: var(--primary-soft); }

@media (min-width: 640px) {
  :root { --gutter: 24px; }
  .nbs-tabbar { display: none; }
  .nbs-topbar__menu-btn { display: inline-flex; }
  .nbs-main { padding-bottom: 48px; }
}

@media (min-width: 1024px) {
  .nbs-topbar__menu-btn { display: none; }
  .nbs-topbar { left: calc(var(--side-w) + var(--side-gap) * 2); padding-left: 8px; padding-right: 20px; }
  .nbs-topbar .nbs-crumbs-nav { display: block; }
  .nbs-main__inner > .nbs-crumbs-nav { display: none; }
  .nbs-topbar__brand { display: none; }
  .nbs-cmdk-trigger { width: auto; min-width: 280px; padding: 0 8px 0 12px; justify-content: flex-start; }
  .nbs-cmdk-trigger .label { display: inline; flex: 1; text-align: left; }
  .nbs-cmdk-trigger .nbs-kbd { display: inline-flex; }
  .nbs-sidebar { transform: none; box-shadow: var(--shadow-sm); z-index: 120; width: var(--side-w); }
  .nbs-scrim { display: none; }
  .nbs-sidebar__collapse { display: inline-flex; width: 28px; height: 28px; font-size: .9rem; border-color: transparent; background: transparent; color: var(--side-muted); }
  .nbs-main { margin-left: calc(var(--side-w) + var(--side-gap) * 2); padding: calc(var(--nav-h) + 8px) 28px 48px 16px; }

  :root.nbs-collapsed .nbs-sidebar { width: var(--side-w-collapsed); }
  :root.nbs-collapsed .nbs-topbar { left: calc(var(--side-w-collapsed) + var(--side-gap) * 2); }
  :root.nbs-collapsed .nbs-main { margin-left: calc(var(--side-w-collapsed) + var(--side-gap) * 2); }
  :root.nbs-collapsed .nbs-sidebar__head { flex-direction: column; padding: 14px 8px 8px; }
  :root.nbs-collapsed .nbs-brand__text,
  :root.nbs-collapsed .nbs-nav-link__label,
  :root.nbs-collapsed .nbs-nav-link__count,
  :root.nbs-collapsed .nbs-nav__heading,
  :root.nbs-collapsed .nbs-context__text,
  :root.nbs-collapsed .nbs-context__chev { display: none; }
  :root.nbs-collapsed .nbs-nav__group.is-closed .nbs-nav__items { display: flex; }
  :root.nbs-collapsed .nbs-nav__group + .nbs-nav__group { border-top: 1px solid var(--side-line); padding-top: 6px; }
  :root.nbs-collapsed .nbs-sidebar__collapse .bi { transform: rotate(180deg); }
  :root.nbs-collapsed .nbs-context__btn { justify-content: center; padding: 8px; }
  :root.nbs-collapsed .nbs-context .nbs-menu { left: calc(100% + 10px); right: auto; top: 0; min-width: 220px; }
  :root.nbs-collapsed .nbs-nav-link { justify-content: center; padding: 10px; }
}

/* ---------- 6. Menus and ⌘K -------------------------------------------- */
.nbs-menu {
  position: absolute; z-index: 130; display: none;
  min-width: 240px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--shadow-lg);
}
.is-open > .nbs-menu { display: block; animation: nbs-pop-in var(--dur-2) var(--ease-out); }
.nbs-menu__label { padding: 8px 10px 4px; font-size: .69rem; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.nbs-menu__sep { height: 1px; margin: 6px 4px; background: var(--border); }
.nbs-menu form { margin: 0; }
.nbs-menu-item {
  width: 100%; display: flex; align-items: center; gap: 10px;
  min-height: 40px; padding: 8px 10px; border: 0; border-radius: var(--r-sm);
  background: transparent; color: var(--text); font: inherit; font-size: .875rem; text-align: left; text-decoration: none; cursor: pointer;
}
.nbs-menu-item .bi { color: var(--muted); font-size: 1rem; width: 18px; text-align: center; }
.nbs-menu-item:hover, .nbs-menu-item:focus-visible { background: var(--surface-3); color: var(--text); }
.nbs-menu-item.is-current { color: var(--primary-ink); font-weight: 600; }
.nbs-menu-item.is-current::after { content: "✓"; margin-left: auto; }
.nbs-menu-item--danger, .nbs-menu-item--danger .bi { color: var(--danger); }
.nbs-menu-item__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.nbs-menu-item__text small { color: var(--muted); font-size: .75rem; }
.nbs-menu-head { display: flex; align-items: center; gap: 10px; padding: 8px 10px 10px; }
.nbs-menu-head__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.nbs-menu-head__text strong { font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-menu-head__text small { color: var(--muted); font-size: .78rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Anchored menus in the top bar */
.nbs-dropdown { position: relative; }
.nbs-dropdown > .nbs-menu { right: 0; top: calc(100% + 8px); }
@media (max-width: 639px) {
  /* On phones, top-bar menus become sheets pinned under the bar. */
  .nbs-topbar .nbs-dropdown { position: static; }
  .nbs-topbar .nbs-dropdown > .nbs-menu { position: fixed; left: 8px; right: 8px; top: calc(var(--nav-h) + env(safe-area-inset-top)); min-width: 0; max-height: calc(100dvh - var(--nav-h) - 24px); overflow-y: auto; }
}

/* Account button */
.nbs-account { display: flex; align-items: center; gap: 10px; height: 40px; padding: 4px; border: 1px solid var(--border); border-radius: var(--r-pill); background: var(--surface); color: var(--text); cursor: pointer; font: inherit; }
.nbs-account:hover, .is-open > .nbs-account { border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.nbs-account__who { display: none; flex-direction: column; min-width: 0; max-width: 180px; line-height: 1.2; text-align: left; }
.nbs-account__who strong { font-size: .8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-account__who small { font-size: .69rem; color: var(--muted); text-transform: capitalize; }
.nbs-account__chev { display: none; color: var(--muted); font-size: .8rem; }
@media (min-width: 1280px) {
  .nbs-account { padding-right: 10px; }
  .nbs-account__who { display: flex; }
  .nbs-account__chev { display: inline; }
}

/* Avatar */
.nbs-avatar {
  --size: 30px;
  width: var(--size); height: var(--size); flex: 0 0 var(--size);
  display: inline-grid; place-items: center; border-radius: 50%; overflow: hidden;
  background: var(--primary-soft); color: var(--primary-ink);
  font-weight: 700; font-size: calc(var(--size) * .4); letter-spacing: -.02em;
}
.nbs-avatar img { width: 100%; height: 100%; object-fit: cover; }
.nbs-avatar--lg { --size: 44px; }
.nbs-avatar--xl { --size: 64px; }

/* App switcher */
.nbs-apps { display: grid; grid-template-columns: 1fr; gap: 4px; min-width: 300px; }
.nbs-app {
  display: flex; align-items: center; gap: 12px; padding: 10px; border-radius: var(--r-md);
  color: var(--text); text-decoration: none;
}
.nbs-app:hover { background: var(--surface-3); color: var(--text); }
.nbs-app__icon { width: 38px; height: 38px; flex: 0 0 38px; display: grid; place-items: center; border-radius: 11px; color: #fff; font-size: 1.1rem; background: #1a365d; }
.nbs-app__icon--teal { background: #0f766e; }
.nbs-app__icon--gold { background: #b7791f; }
.nbs-app__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.nbs-app__text strong { font-size: .875rem; }
.nbs-app__text small { color: var(--muted); font-size: .75rem; }
.nbs-app.is-current .nbs-app__text strong::after { content: " · You're here"; font-weight: 500; color: var(--muted); }

/* Notifications popover */
.nbs-feed { max-height: min(380px, 60dvh); overflow-y: auto; margin: 0 -6px; }
.nbs-feed__item { position: relative; display: block; padding: 12px 16px 12px 22px; border-top: 1px solid var(--border); color: inherit; text-decoration: none; }
.nbs-feed__item:hover { background: var(--surface-2); color: inherit; }
.nbs-feed__item.is-unread { background: color-mix(in srgb, var(--primary-soft) 60%, transparent); }
.nbs-feed__item.is-unread::before { content: ""; position: absolute; left: 9px; top: 18px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.nbs-feed__title { font-weight: 600; font-size: .875rem; color: var(--text); }
.nbs-feed__body { color: var(--muted); font-size: .8rem; line-height: 1.45; margin-top: 2px; }
.nbs-feed__time { color: var(--muted); font-size: .72rem; margin-top: 4px; }
.nbs-feed__empty { padding: 28px 16px; text-align: center; color: var(--muted); font-size: .875rem; }
.nbs-menu__header { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px 10px; }
.nbs-menu__header h2 { margin: 0; font-size: .95rem; }
.nbs-menu__footer { padding: 8px 10px 4px; border-top: 1px solid var(--border); margin: 0 -6px; text-align: center; }
.nbs-menu__footer a, .nbs-link-btn { font-size: .8rem; font-weight: 600; color: var(--primary); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: none; }
.nbs-menu__footer a:hover, .nbs-link-btn:hover { text-decoration: underline; }
.nbs-feed--popover { width: min(380px, calc(100vw - 16px)); }

.nbs-skeleton { display: block; height: 12px; border-radius: 6px; background: linear-gradient(90deg, var(--surface-3) 0%, var(--surface-2) 50%, var(--surface-3) 100%); background-size: 200% 100%; animation: nbs-shimmer 1.4s linear infinite; }
.nbs-skeleton + .nbs-skeleton { margin-top: 8px; }
.nbs-skeleton--short { width: 55%; }

/* ⌘K palette: full-height sheet on phones, centred dialog on wider screens */
.nbs-cmdk {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: flex-start; justify-content: center;
  padding: calc(8px + env(safe-area-inset-top)) 8px 8px;
  background: rgba(11, 10, 20, .45);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.nbs-cmdk[hidden] { display: none; }
.nbs-cmdk__panel { width: min(620px, 100%); max-height: 100%; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-xl); box-shadow: var(--shadow-lg); overflow: hidden; animation: nbs-pop-in var(--dur-2) var(--ease-out); }
.nbs-cmdk__search { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--border); color: var(--muted); }
.nbs-cmdk__search .bi { font-size: 1.1rem; }
button.nbs-kbd { cursor: pointer; }
.nbs-cmdk__search input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; padding: 6px 0; font: 500 16px/1.4 var(--font-sans); color: var(--text); }
.nbs-cmdk__list { flex: 1 1 auto; max-height: min(440px, 70dvh); overflow-y: auto; padding: 6px; margin: 0; list-style: none; }
.nbs-cmdk__group { padding: 10px 10px 4px; font-size: .69rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.nbs-cmdk__item { display: flex; align-items: center; gap: 12px; min-height: var(--tap); padding: 8px 12px; border-radius: var(--r-md); color: var(--text); cursor: pointer; }
.nbs-cmdk__ic { width: 32px; height: 32px; flex: 0 0 32px; display: grid; place-items: center; border-radius: 9px; background: var(--surface-3); color: var(--text-2); }
.nbs-cmdk__tx { display: flex; flex-direction: column; min-width: 0; }
.nbs-cmdk__tx small { color: var(--muted); font-size: .75rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-cmdk__item mark { padding: 0; background: transparent; color: var(--primary); font-weight: 700; }
.nbs-cmdk__item.is-active { background: var(--primary-soft); }
.nbs-cmdk__item.is-active .nbs-cmdk__ic { background: var(--primary); color: var(--on-primary); }
.nbs-cmdk__empty { padding: 28px 16px; text-align: center; color: var(--muted); }
.nbs-cmdk__foot { display: none; gap: 14px; padding: 10px 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: .75rem; }
@media (min-width: 640px) {
  .nbs-cmdk { padding-top: 12vh; }
  .nbs-cmdk__foot { display: flex; }
}

/* ---------- 7. Components ---------------------------------------------- */

/* Page header */
.nbs-page-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px 16px; margin: 4px 0 20px; }
.nbs-page-header__text { min-width: 0; flex: 1 1 280px; }
.nbs-page-header__eyebrow { margin: 0 0 4px; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); }
.nbs-page-header h1, .nbs-page-header h2 { margin: 0; font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); font-weight: 700; letter-spacing: -.025em; }
.nbs-page-header__subtitle { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }
.nbs-page-header__actions { display: flex; flex-wrap: wrap; gap: 8px; }
@media (max-width: 639px) {
  .nbs-page-header__actions { width: 100%; }
  .nbs-page-header__actions > * { flex: 1 1 auto; }
}

/* Hero banner */
.nbs-hero {
  position: relative; overflow: hidden; isolation: isolate;
  padding: 22px 20px; margin-bottom: 18px; border-radius: var(--r-xl);
  background: var(--hero); color: #fff; box-shadow: var(--shadow-md);
}
.nbs-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .08;
  background-image: linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(120deg, #000 10%, transparent 70%); mask-image: linear-gradient(120deg, #000 10%, transparent 70%);
}
.nbs-hero__eyebrow { margin: 0 0 6px; font-size: .75rem; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; color: rgba(255,255,255,.75); }
.nbs-hero h1, .nbs-hero h2 { margin: 0; color: #fff; font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem); font-weight: 700; letter-spacing: -.03em; }
.nbs-hero__lead { margin: 6px 0 0; color: rgba(255,255,255,.82); font-size: .95rem; max-width: 52ch; }
.nbs-hero__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.nbs-hero .nbs-chip { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.18); color: #fff; }
@media (min-width: 640px) { .nbs-hero { padding: 28px 28px 26px; } }

/* Chip */
.nbs-chip {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 28px; padding: 3px 10px; border-radius: var(--r-pill);
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2);
  font-size: .78rem; font-weight: 600; white-space: nowrap;
}
.nbs-chip--primary { background: var(--primary-soft); border-color: transparent; color: var(--primary-ink); }
.nbs-chip--accent  { background: var(--accent-soft);  border-color: transparent; color: var(--accent-ink); }
.nbs-chip--success { background: var(--success-soft); border-color: transparent; color: var(--success-ink); }
.nbs-chip--warning { background: var(--warning-soft); border-color: transparent; color: var(--warning-ink); }
.nbs-chip--danger  { background: var(--danger-soft);  border-color: transparent; color: var(--danger-ink); }

/* Stat tiles */
.nbs-stat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 18px; }
@media (min-width: 1024px) { .nbs-stat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; } }
.nbs-stat {
  --tone: var(--primary); --tone-soft: var(--primary-soft);
  position: relative; display: flex; flex-direction: column; gap: 2px; min-width: 0;
  padding: 14px; border-radius: var(--r-lg);
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  color: inherit; text-decoration: none;
  transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) ease, border-color var(--dur-2) ease;
}
a.nbs-stat:hover { color: inherit; transform: translateY(-1px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--tone) 35%, var(--border)); }
.nbs-stat--accent  { --tone: var(--accent);  --tone-soft: var(--accent-soft); }
.nbs-stat--success { --tone: var(--success); --tone-soft: var(--success-soft); }
.nbs-stat--warning { --tone: var(--warning); --tone-soft: var(--warning-soft); }
.nbs-stat--danger  { --tone: var(--danger);  --tone-soft: var(--danger-soft); }
.nbs-stat--info    { --tone: var(--info);    --tone-soft: var(--info-soft); }
.nbs-stat__icon { width: 34px; height: 34px; display: grid; place-items: center; margin-bottom: 8px; border-radius: 10px; background: var(--tone-soft); color: var(--tone); font-size: 1.05rem; }
.nbs-stat__value { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; line-height: 1.1; font-variant-numeric: tabular-nums; color: var(--text); }
.nbs-stat__label { font-size: .8rem; font-weight: 600; color: var(--muted); }
.nbs-stat__hint { font-size: .74rem; color: var(--muted); }
@media (min-width: 640px) { .nbs-stat { padding: 18px; } .nbs-stat__value { font-size: 1.85rem; } }

/* Panel (titled card) */
.nbs-panel { display: flex; flex-direction: column; min-width: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }
.nbs-panel__head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.nbs-panel__head h2, .nbs-panel__head h3 { margin: 0; font-size: .95rem; font-weight: 650; display: flex; align-items: center; gap: 8px; min-width: 0; }
.nbs-panel__head h2 .bi, .nbs-panel__head h3 .bi { color: var(--muted); }
.nbs-panel__action { margin-left: auto; font-size: .8rem; font-weight: 600; white-space: nowrap; text-decoration: none; }
.nbs-panel__body { padding: 16px; flex: 1 1 auto; }
.nbs-panel__body--flush { padding: 0; }
@media (min-width: 640px) { .nbs-panel__head { padding: 14px 18px; } .nbs-panel__body { padding: 18px; } }

/* Row list inside a panel (activity, tasks) */
.nbs-rows { list-style: none; margin: 0; padding: 0; }
.nbs-row { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--border); color: inherit; text-decoration: none; min-height: var(--tap); }
.nbs-rows > li:first-child > .nbs-row, .nbs-rows > .nbs-row:first-child { border-top: 0; }
a.nbs-row:hover { background: var(--surface-2); color: inherit; }
.nbs-row__icon { width: 34px; height: 34px; flex: 0 0 34px; display: grid; place-items: center; border-radius: 10px; background: var(--surface-3); color: var(--text-2); }
.nbs-row__text { display: flex; flex-direction: column; min-width: 0; flex: 1; line-height: 1.35; }
.nbs-row__text strong { font-size: .875rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-row__text small { color: var(--muted); font-size: .78rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nbs-row__meta { margin-left: auto; color: var(--muted); font-size: .75rem; white-space: nowrap; }

/* Empty state */
.nbs-empty { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; padding: 28px 16px; color: var(--muted); }
.nbs-empty__icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; background: var(--surface-3); color: var(--muted); font-size: 1.35rem; margin-bottom: 6px; }
.nbs-empty__title { margin: 0; font-weight: 650; color: var(--text); font-size: .95rem; }
.nbs-empty__text { margin: 0; font-size: .85rem; max-width: 40ch; }
.nbs-empty .btn { margin-top: 8px; }

/* Quick action tiles */
.nbs-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 18px; }
@media (min-width: 640px) { .nbs-actions { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); } }
.nbs-action {
  display: flex; align-items: center; gap: 10px; min-height: 56px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface);
  color: var(--text); font-weight: 600; font-size: .85rem; text-decoration: none; box-shadow: var(--shadow-xs);
  transition: border-color var(--dur-1) ease, transform var(--dur-1) ease;
}
.nbs-action:hover { color: var(--text); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); transform: translateY(-1px); }
.nbs-action .bi { width: 32px; height: 32px; flex: 0 0 32px; display: grid; place-items: center; border-radius: 9px; background: var(--primary-soft); color: var(--primary-ink); font-size: 1rem; }

/* Portal cards */
.nbs-portals { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 640px) { .nbs-portals { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); } }
.nbs-portal {
  display: flex; align-items: center; gap: 12px; padding: 14px;
  border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface);
  color: var(--text); text-decoration: none;
  transition: border-color var(--dur-1) ease, box-shadow var(--dur-1) ease;
}
.nbs-portal:hover { color: var(--text); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); box-shadow: var(--shadow-md); }
.nbs-portal .bi-arrow-up-right { margin-left: auto; color: var(--muted); }

/* Dashboard grid */
.nbs-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 1024px) {
  .nbs-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nbs-grid--main-side { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
}
.nbs-section-title { margin: 22px 0 10px; font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }

/* Bar meter */
.nbs-meter { display: grid; grid-template-columns: minmax(80px, auto) 1fr auto; align-items: center; gap: 10px; padding: 6px 0; font-size: .85rem; }
.nbs-meter__track { height: 8px; border-radius: var(--r-pill); background: var(--surface-3); overflow: hidden; }
.nbs-meter__fill { display: block; height: 100%; border-radius: inherit; background: var(--primary); transform-origin: left; animation: nbs-grow-x .6s var(--ease-out) both; }
.nbs-meter__value { font-weight: 700; font-variant-numeric: tabular-nums; }

/* List toolbar: search + filters above list pages */
.nbs-toolbar { margin-bottom: 16px; padding: 10px; border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.nbs-toolbar__main { display: flex; align-items: center; gap: 8px; }
.nbs-toolbar__search { position: relative; flex: 1 1 auto; min-width: 0; margin: 0; }
.nbs-toolbar__search > .bi { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.nbs-toolbar__search .form-control { min-height: var(--tap); padding-left: 36px; }
.nbs-toolbar__toggle, .nbs-toolbar__create { min-height: var(--tap); flex: 0 0 auto; }
.nbs-toolbar__toggle span:not(.nbs-toolbar__count), .nbs-toolbar__create span { display: none; }
.nbs-toolbar__count { min-width: 20px; padding: 0 6px; border-radius: var(--r-pill); background: var(--primary); color: var(--on-primary); font-size: .7rem; line-height: 20px; }
.nbs-toolbar__filters { display: none; padding: 12px 2px 4px; }
.nbs-toolbar.is-open .nbs-toolbar__filters { display: block; animation: nbs-rise-in .25s var(--ease-out) both; }
@media (min-width: 640px) {
  .nbs-toolbar__toggle span:not(.nbs-toolbar__count), .nbs-toolbar__create span { display: inline; }
}
@media (min-width: 768px) {
  .nbs-toolbar { padding: 14px 16px; }
  .nbs-toolbar__toggle { display: none; }
  .nbs-toolbar__main { justify-content: space-between; }
  .nbs-toolbar__search { flex: 0 1 360px; }
  .nbs-toolbar__filters { display: block; padding: 12px 0 0; margin-top: 12px; border-top: 1px solid var(--border); }
}

/* Error pages */
.nbs-error { max-width: 520px; margin: clamp(24px, 8vh, 96px) auto; text-align: center; display: flex; flex-direction: column; align-items: center; }
.nbs-error__code { margin: 0 0 8px; font-family: var(--font-display); font-size: clamp(64px, 14vw, 96px); font-weight: 800; letter-spacing: -.05em; line-height: 1; color: var(--primary); opacity: .9; }
.nbs-error__title { margin: 4px 0 8px; font-size: 1.5rem; font-weight: 700; }
.nbs-error__message { margin: 0 0 22px; color: var(--muted); }
.nbs-error__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.nbs-auth__card .nbs-error { margin: 0; }

/* Flash messages */
.nbs-flash-stack { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.nbs-flash {
  --tone: var(--info); --tone-soft: var(--info-soft); --tone-ink: var(--info-ink);
  display: flex; align-items: flex-start; gap: 10px; padding: 12px 12px 12px 14px;
  border: 1px solid color-mix(in srgb, var(--tone) 28%, transparent); border-radius: var(--r-md);
  background: var(--tone-soft); color: var(--tone-ink); font-size: .9rem;
  animation: nbs-rise-in .35s var(--ease-out) both;
}
.nbs-flash > .bi { font-size: 1.05rem; margin-top: 1px; }
.nbs-flash__text { flex: 1; min-width: 0; }
.nbs-flash--success { --tone: var(--success); --tone-soft: var(--success-soft); --tone-ink: var(--success-ink); }
.nbs-flash--warning { --tone: var(--warning); --tone-soft: var(--warning-soft); --tone-ink: var(--warning-ink); }
.nbs-flash--danger  { --tone: var(--danger);  --tone-soft: var(--danger-soft);  --tone-ink: var(--danger-ink); }
.nbs-flash__close { flex: 0 0 auto; width: 28px; height: 28px; margin: -4px -4px -4px 0; display: grid; place-items: center; border: 0; border-radius: 8px; background: transparent; color: inherit; opacity: .7; cursor: pointer; }
.nbs-flash__close:hover { opacity: 1; background: color-mix(in srgb, var(--tone) 12%, transparent); }

/* Toasts */
.nbs-toasts { position: fixed; z-index: 400; left: 12px; right: 12px; bottom: calc(var(--tabbar-h) + 22px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.nbs-toasts .nbs-flash { pointer-events: auto; box-shadow: var(--shadow-lg); background: var(--surface); color: var(--text); }
.nbs-toasts .nbs-flash > .bi { color: var(--tone); }
@media (min-width: 640px) { .nbs-toasts { left: auto; right: 20px; bottom: 20px; width: 380px; } }

/* Password field */
.nbs-password { position: relative; }
.nbs-password .form-control { padding-right: 48px; }
.nbs-password__toggle { position: absolute; top: 50%; right: 4px; transform: translateY(-50%); width: 38px; height: 38px; display: grid; place-items: center; border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; }
.nbs-password__toggle:hover { color: var(--text); background: var(--surface-3); }
.nbs-field-hint { display: flex; align-items: center; gap: 6px; margin-top: 6px; font-size: .8rem; color: var(--warning-ink); }
.nbs-field-hint[hidden] { display: none; }

/* ---------- 8. Auth ----------------------------------------------------- */
.nbs-auth { min-height: 100vh; min-height: 100dvh; display: grid; grid-template-columns: 1fr; background: var(--bg); }
.nbs-auth__brand { display: none; }
.nbs-auth__main {
  position: relative; display: flex; flex-direction: column; align-items: center;
  padding: calc(64px + env(safe-area-inset-top)) var(--gutter) calc(24px + env(safe-area-inset-bottom));
}
.nbs-auth__theme { position: absolute; top: calc(14px + env(safe-area-inset-top)); right: 14px; }
.nbs-auth__card { width: 100%; max-width: 400px; margin-block: auto; animation: nbs-rise-in .45s var(--ease-out) both; }
.nbs-auth__logo { display: flex; align-items: center; gap: 10px; margin-bottom: 26px; font-family: var(--font-display); font-weight: 700; color: var(--text); }
.nbs-auth__card h1 { margin: 0 0 6px; font-size: 1.6rem; font-weight: 700; letter-spacing: -.025em; }
.nbs-auth__lead { margin: 0 0 22px; color: var(--muted); font-size: .95rem; line-height: 1.55; }
.nbs-auth__card .form-control, .nbs-auth__card .form-select { min-height: var(--tap); }
.nbs-auth__card .btn { min-height: var(--tap); }
.nbs-auth__links { margin-top: 20px; font-size: .875rem; text-align: center; color: var(--muted); }
.nbs-auth__links a, .nbs-auth__card .btn-link { font-weight: 600; text-decoration: none; }
.nbs-auth__links a:hover { text-decoration: underline; }
.nbs-auth__target { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.nbs-auth__badge { width: 64px; height: 64px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 18px; background: var(--primary-soft); color: var(--primary-ink); font-size: 1.75rem; }
.nbs-auth__footer { width: 100%; max-width: 400px; margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 16px; font-size: .78rem; color: var(--muted); }
.nbs-auth__footer a { color: var(--muted); }
.nbs-auth__footer a:hover { color: var(--primary); }
.nbs-code-input { font-family: var(--font-mono) !important; font-size: 1.35rem !important; letter-spacing: .35em; text-align: center; }

@media (min-width: 1024px) {
  .nbs-auth { grid-template-columns: minmax(420px, 46%) 1fr; }
  .nbs-auth__brand {
    position: sticky; top: 0; height: 100vh;
    display: flex; flex-direction: column; justify-content: space-between;
    padding: 40px 48px; color: #e8eef7; background: var(--hero);
    overflow: hidden; isolation: isolate;
  }
  .nbs-auth__brand::before {
    content: ""; position: absolute; inset: 0; z-index: -1; opacity: .09;
    background-image: linear-gradient(rgba(255,255,255,.7) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.7) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(120% 80% at 20% 30%, #000 20%, transparent 75%); mask-image: radial-gradient(120% 80% at 20% 30%, #000 20%, transparent 75%);
  }
  .nbs-auth__brand::after {
    content: ""; position: absolute; z-index: -1; width: 620px; height: 620px; right: -220px; bottom: -260px; border-radius: 50%;
    background: radial-gradient(closest-side, color-mix(in srgb, var(--brand-accent) 35%, transparent), transparent);
    animation: nbs-drift 22s ease-in-out infinite alternate;
  }
  .nbs-auth__brand-top { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; font-size: .95rem; color: #fff; }
  .nbs-auth__brand-top .nbs-brand__mark { width: 40px; height: 40px; flex-basis: 40px; background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.18); }
  .nbs-auth__brand-body { max-width: 30rem; margin-block: auto; }
  .nbs-auth__eyebrow { margin: 0 0 14px; font-size: .75rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: rgba(232,238,247,.65); }
  .nbs-auth__brand h2 { margin: 0 0 28px; color: #fff; font-size: clamp(1.75rem, 2.6vw, 2.4rem); font-weight: 700; letter-spacing: -.03em; line-height: 1.15; }
  .nbs-auth__points { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
  .nbs-auth__points li { display: flex; align-items: center; gap: 12px; font-size: .92rem; color: rgba(232,238,247,.88); }
  .nbs-auth__points .bi { width: 34px; height: 34px; flex: 0 0 34px; display: grid; place-items: center; border-radius: 10px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); color: #f2c77d; }
  .nbs-auth__portals { display: flex; flex-wrap: wrap; gap: 8px; font-size: .78rem; color: rgba(232,238,247,.7); }
  .nbs-auth__portals span { padding: 4px 10px; border-radius: var(--r-pill); border: 1px solid rgba(255,255,255,.16); }
  .nbs-auth__logo { display: none; }
  .nbs-auth__main { justify-content: center; padding-top: 72px; }
}

/* ---------- 9. Motion -------------------------------------------------- */
@keyframes nbs-rise-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes nbs-pop-in  { from { opacity: 0; transform: scale(.97) translateY(-4px); } to { opacity: 1; transform: none; } }
@keyframes nbs-shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }
@keyframes nbs-drift   { from { transform: translate3d(-3%, -2%, 0) rotate(0deg); } to { transform: translate3d(3%, 2%, 0) rotate(6deg); } }
@keyframes nbs-grow-x  { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.nbs-main__inner > * { animation: nbs-rise-in .4s var(--ease-out) both; }
.nbs-main__inner > *:nth-child(2) { animation-delay: .03s; }
.nbs-main__inner > *:nth-child(3) { animation-delay: .06s; }
.nbs-main__inner > *:nth-child(n+4) { animation-delay: .09s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

@media print {
  .nbs-topbar, .nbs-sidebar, .nbs-tabbar, .nbs-scrim, .nbs-cmdk, .nbs-toasts { display: none !important; }
  .nbs-main { margin: 0 !important; padding: 0 !important; }
  body { background: #fff; }
}