/* =========================================================
   System UI · Uniwersytet w Siedlcach
   Tokeny oparte na Księdze Identyfikacji Wizualnej UwS
   WCAG 2.1 AA — kontrast min. 4.5:1 dla tekstu
   Źródło: projekt claude.ai/design „System UI · UwS" (styles.css)
   ========================================================= */

:root {
  /* --- Kolory marki UwS --- */
  --c-blue:        #003D7C;   /* PANTONE 654 C — kolor podstawowy */
  --c-blue-700:   #002B57;
  --c-blue-600:   #00345E;
  --c-blue-500:   #003D7C;
  --c-blue-400:   #1A5B9E;
  --c-blue-300:   #4F87C0;
  --c-blue-200:   #B5CDE5;
  --c-blue-100:   #E2ECF6;
  --c-blue-50:    #F1F6FB;

  --c-red:        #C90921;   /* PANTONE 186 C — kolor dodatkowy */
  --c-red-600:    #A40718;
  --c-red-50:     #FCEBED;

  --c-black:      #1E1E1E;   /* PANTONE Neutral Black */
  --c-white:      #FFFFFF;

  /* Kolory wydziałów (zgodne z KIW 4.2) */
  --c-fwh:        #0069B4;   /* Nauki Humanistyczne */
  --c-fws:        #EF7D00;   /* Nauki Społeczne */
  --c-fwsp:       #761F71;   /* Nauki Ścisłe i Przyrodnicze */
  --c-fwr:        #006730;   /* Nauki Rolnicze */
  --c-fwm:        #751632;   /* Nauki Medyczne */

  /* Skala szarości (neutralna, dostrojona pod niebieski) */
  --c-ink-900:    #1E1E1E;
  --c-ink-800:    #2B2F36;
  --c-ink-700:    #424955;
  --c-ink-600:    #5B6473;
  --c-ink-500:    #6C7585;   /* AA na białym (4.5:1) */
  --c-ink-400:    #9098A6;
  --c-ink-300:    #C2C8D2;
  --c-ink-200:    #E1E4EB;
  --c-ink-100:    #EFF1F5;
  --c-ink-50:     #F7F8FA;

  /* Statusy — wszystkie warianty AA */
  --c-success:    #136E3C;
  --c-success-50: #E6F4ED;
  --c-warn:       #8A4B00;
  --c-warn-50:    #FBEEDB;
  --c-danger:     #B00718;
  --c-danger-50:  #FCEBED;
  --c-info:       #1A5B9E;
  --c-info-50:    #E2ECF6;

  /* Promienie */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* Cienie */
  --sh-1: 0 1px 2px rgba(0,17,46,.06), 0 1px 1px rgba(0,17,46,.04);
  --sh-2: 0 4px 12px rgba(0,17,46,.08), 0 2px 4px rgba(0,17,46,.04);
  --sh-3: 0 14px 32px rgba(0,17,46,.14), 0 4px 8px rgba(0,17,46,.06);
  --sh-focus: 0 0 0 3px rgba(0,61,124,.25);

  /* Typografia */
  --font-sans: "Geologica", system-ui, "Segoe UI", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Spacing scale */
  --s-1: 4px;  --s-2: 8px; --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-7: 32px; --s-8: 40px;
  --s-9: 56px; --s-10: 72px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-ink-900);
  background: var(--c-ink-50);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }
:focus-visible {
  outline: 3px solid var(--c-blue-300);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* ---------- Typografia ---------- */
h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--font-sans); color: var(--c-blue-700); letter-spacing: -0.01em;}
.t-display { font-size: clamp(40px, 5vw, 64px); font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; }
.t-h1 { font-size: 40px; font-weight: 700; line-height: 1.15; }
.t-h2 { font-size: 30px; font-weight: 700; line-height: 1.2; }
.t-h3 { font-size: 22px; font-weight: 600; line-height: 1.3; }
.t-h4 { font-size: 18px; font-weight: 600; line-height: 1.35; }
.t-body { font-size: 16px; line-height: 1.55; }
.t-small { font-size: 14px; line-height: 1.5; }
.t-micro { font-size: 12px; line-height: 1.4; letter-spacing: 0.02em; text-transform: uppercase; font-weight: 600; }
.t-mono { font-family: var(--font-mono); font-size: 13px; }
.t-muted { color: var(--c-ink-600); }

/* ---------- Layout aplikacji ---------- */
.app {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: 100vh;
  max-width: 1560px;
  margin: 0 auto;
  background: var(--c-white);
}

/* Pasek boczny */
.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  background: var(--c-blue);
  color: var(--c-white);
  padding: var(--s-7) var(--s-5);
  background-image: var(--bg-grid-blue);
}
.sidebar__brand {
  display: flex; align-items: center; gap: var(--s-3);
  margin-bottom: var(--s-7);
  padding-bottom: var(--s-5);
  border-bottom: 1px solid rgba(255,255,255,.18);
}
.sidebar__brand-text { line-height: 1.1; }
.sidebar__brand-text strong { display: block; font-weight: 700; font-size: 15px; }
.sidebar__brand-text span { font-size: 12px; color: rgba(255,255,255,.7); }
.sidebar__nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar__group { margin-top: var(--s-5); }
.sidebar__group-title {
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: rgba(255,255,255,.55); padding: 0 var(--s-3); margin-bottom: var(--s-2);
}
.sidebar a {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-sm);
  color: rgba(255,255,255,.86);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background .15s, color .15s;
}
.sidebar a:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar a.is-active { background: rgba(255,255,255,.14); color: #fff; }
.sidebar a .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,.35);
}
.sidebar a.is-active .dot { background: #fff; }

/* Główna kolumna */
.main { padding: 0; min-width: 0; }
.section {
  padding: var(--s-9) var(--s-9) var(--s-8);
  border-bottom: 1px solid var(--c-ink-200);
  scroll-margin-top: 16px;
}
.section__head { max-width: 720px; margin-bottom: var(--s-7); }
.section__eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 700; color: var(--c-blue);
  padding: 4px 10px; border-radius: var(--r-pill);
  background: var(--c-blue-50);
  margin-bottom: var(--s-3);
}
.section__title { font-size: 32px; font-weight: 700; color: var(--c-blue-700); margin-bottom: var(--s-3); }
.section__desc { color: var(--c-ink-700); font-size: 16px; max-width: 64ch; }

/* ---------- Pattern diagonalny (siatka tła z księgi znaków) ---------- */
.bg-grid {
  background-color: var(--c-blue);
  background-image:
    repeating-linear-gradient(30deg,  rgba(255,255,255,.10) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(-30deg, rgba(255,255,255,.10) 0 1px, transparent 1px 56px);
}
:root {
  --bg-grid-blue:
    repeating-linear-gradient(30deg,  rgba(255,255,255,.08) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(-30deg, rgba(255,255,255,.08) 0 1px, transparent 1px 48px);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--c-white);
  padding: var(--s-9) var(--s-9) var(--s-10);
  background: linear-gradient(135deg, #002B57 0%, #003D7C 60%, #1A5B9E 100%);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(30deg,  rgba(255,255,255,.10) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(-30deg, rgba(255,255,255,.10) 0 1px, transparent 1px 56px);
  pointer-events: none;
}
.hero__inner { position: relative; max-width: 880px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 6px 12px; border-radius: var(--r-pill);
  background: rgba(255,255,255,.14);
  font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600;
}
.hero h1 { color: #fff; margin: var(--s-5) 0 var(--s-4); }
.hero p { font-size: 18px; color: rgba(255,255,255,.85); max-width: 60ch; }
.hero__meta { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-6); }
.hero__chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: var(--r-pill);
  background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.18);
  font-size: 13px; font-weight: 500;
}

/* ---------- Buttony ---------- */
.btn {
  --bg: var(--c-blue);
  --fg: #fff;
  --bd: var(--c-blue);
  --bg-hover: var(--c-blue-600);
  --bg-active: var(--c-blue-700);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 18px;
  background: var(--bg); color: var(--fg);
  border: 1.5px solid var(--bd);
  border-radius: var(--r-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s, transform .05s;
  white-space: nowrap;
}
.btn:hover { background: var(--bg-hover); border-color: var(--bg-hover); }
.btn:active { background: var(--bg-active); border-color: var(--bg-active); transform: translateY(1px); }
.btn:disabled,
.btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }

.btn--secondary {
  --bg: transparent; --fg: var(--c-blue); --bd: var(--c-blue);
  --bg-hover: var(--c-blue-50); --bg-active: var(--c-blue-100);
}
.btn--secondary:hover { color: var(--c-blue-700); border-color: var(--c-blue-700); }
.btn--ghost {
  --bg: transparent; --fg: var(--c-blue); --bd: transparent;
  --bg-hover: var(--c-blue-50); --bg-active: var(--c-blue-100);
}
.btn--danger {
  --bg: var(--c-red); --fg: #fff; --bd: var(--c-red);
  --bg-hover: var(--c-red-600); --bg-active: #8C0612;
}
.btn--danger-outline {
  --bg: transparent; --fg: var(--c-red); --bd: var(--c-red);
  --bg-hover: var(--c-red-50); --bg-active: #F8D6DA;
}
.btn--success {
  --bg: var(--c-success); --fg: #fff; --bd: var(--c-success);
  --bg-hover: #0E5530; --bg-active: #0A3F24;
}
.btn--inverse {
  --bg: #fff; --fg: var(--c-blue); --bd: #fff;
  --bg-hover: rgba(255,255,255,.92); --bg-active: rgba(255,255,255,.85);
}

.btn--sm { height: 36px; padding: 0 14px; font-size: 14px; }
.btn--xs { height: 28px; padding: 0 10px; font-size: 13px; border-radius: var(--r-xs); border-width: 1px; }
.btn--lg { height: 52px; padding: 0 24px; font-size: 16px; }
.btn--icon { width: 44px; padding: 0; }
.btn--icon.btn--sm { width: 36px; }
.btn--block { width: 100%; }
.btn--loading { color: transparent !important; position: relative; }
.btn--loading::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  width: 18px; height: 18px;
  border: 2px solid currentColor; border-top-color: transparent;
  border-radius: 50%; animation: spin .8s linear infinite;
  color: #fff;
}
.btn--secondary.btn--loading::after,
.btn--ghost.btn--loading::after { color: var(--c-blue); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ButtonGroup */
.btn-group { display: inline-flex; }
.btn-group .btn { border-radius: 0; border-right-width: 0; }
.btn-group .btn:first-child { border-top-left-radius: var(--r-sm); border-bottom-left-radius: var(--r-sm); }
.btn-group .btn:last-child { border-radius: 0 var(--r-sm) var(--r-sm) 0; border-right-width: 1.5px; }
.btn-group .btn[aria-pressed="true"] {
  background: var(--c-blue-50); color: var(--c-blue-700); border-color: var(--c-blue);
  z-index: 1; box-shadow: inset 0 0 0 1px var(--c-blue);
}

/* ---------- Inputy ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.field__label { font-size: 13px; font-weight: 600; color: var(--c-ink-800); }
.field__label .req { color: var(--c-red); margin-left: 2px; }
.field__hint { font-size: 12px; color: var(--c-ink-600); }
.field__error { font-size: 12px; color: var(--c-danger); display: flex; align-items: center; gap: 6px; font-weight: 500; }
.input, .textarea, .select-native {
  height: 44px;
  padding: 0 14px;
  font-family: inherit;
  font-size: 15px;
  color: var(--c-ink-900);
  background: #fff;
  border: 1.5px solid var(--c-ink-300);
  border-radius: var(--r-sm);
  transition: border-color .15s, box-shadow .15s, background .15s;
  width: 100%;
}
.textarea { height: auto; padding: 12px 14px; min-height: 100px; resize: vertical; line-height: 1.5; }
.input:hover, .textarea:hover, .select-native:hover { border-color: var(--c-ink-500); }
.input:focus, .textarea:focus, .select-native:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: var(--sh-focus);
}
.input::placeholder, .textarea::placeholder { color: var(--c-ink-500); }
.input[disabled], .textarea[disabled], .select-native[disabled] {
  background: var(--c-ink-100); color: var(--c-ink-500); cursor: not-allowed;
}
.field--error .input, .field--error .textarea, .field--error .select-native {
  border-color: var(--c-danger);
}
.field--error .input:focus { box-shadow: 0 0 0 3px rgba(176,7,24,.18); }
.field--success .input { border-color: var(--c-success); }

.input-group {
  position: relative;
}
.input-group .input { padding-left: 42px; }
.input-group__icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--c-ink-500); pointer-events: none;
}

/* Checkbox / Radio */
.check, .radio {
  display: inline-flex; align-items: flex-start; gap: 10px;
  cursor: pointer; font-size: 15px; color: var(--c-ink-900);
}
.check input, .radio input { position: absolute; opacity: 0; pointer-events: none; }
.check__box, .radio__dot {
  flex-shrink: 0;
  width: 20px; height: 20px;
  border: 1.5px solid var(--c-ink-400);
  background: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .15s, border-color .15s;
  margin-top: 2px;
}
.check__box { border-radius: 4px; }
.radio__dot { border-radius: 50%; }
.check__box svg { color: #fff; opacity: 0; transition: opacity .1s; }
.radio__dot::after {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: #fff; transform: scale(0); transition: transform .15s;
}
.check input:checked + .check__box { background: var(--c-blue); border-color: var(--c-blue); }
.check input:checked + .check__box svg { opacity: 1; }
.radio input:checked + .radio__dot { background: var(--c-blue); border-color: var(--c-blue); }
.radio input:checked + .radio__dot::after { transform: scale(1); }
.check input:focus-visible + .check__box,
.radio input:focus-visible + .radio__dot { box-shadow: var(--sh-focus); }
.check:hover .check__box, .radio:hover .radio__dot { border-color: var(--c-blue); }

/* Switch */
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-size: 15px; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch__track {
  width: 40px; height: 24px;
  background: var(--c-ink-300);
  border-radius: var(--r-pill);
  position: relative;
  transition: background .2s;
  flex-shrink: 0;
}
.switch__track::after {
  content: "";
  position: absolute; top: 2px; left: 2px;
  width: 20px; height: 20px;
  background: #fff; border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
  transition: transform .2s;
}
.switch input:checked + .switch__track { background: var(--c-blue); }
.switch input:checked + .switch__track::after { transform: translateX(16px); }
.switch input:focus-visible + .switch__track { box-shadow: var(--sh-focus); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px;
  font-size: 12px; font-weight: 600; line-height: 1.4;
  border-radius: var(--r-pill);
  background: var(--c-ink-100); color: var(--c-ink-800);
  border: 1px solid transparent;
}
.badge--blue { background: var(--c-blue-50); color: var(--c-blue-700); }
.badge--red { background: var(--c-red-50); color: var(--c-red-600); }
.badge--green { background: var(--c-success-50); color: var(--c-success); }
.badge--amber { background: var(--c-warn-50); color: var(--c-warn); }
.badge--solid-blue { background: var(--c-blue); color: #fff; }
.badge--solid-red { background: var(--c-red); color: #fff; }
.badge--outline { background: #fff; border-color: var(--c-ink-300); color: var(--c-ink-800); }
.badge .dot-sm { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .9; }

/* ---------- Alerts ---------- */
.alert {
  display: flex; gap: var(--s-3);
  padding: var(--s-4) var(--s-5);
  border-radius: var(--r-md);
  border: 1px solid;
  background: #fff;
  align-items: flex-start;
}
.alert__icon { flex-shrink: 0; margin-top: 1px; }
.alert__body { flex: 1; }
.alert__title { font-weight: 700; font-size: 15px; margin: 0 0 2px; }
.alert__text { font-size: 14px; color: var(--c-ink-700); margin: 0; }
.alert__close {
  border: none; background: transparent; color: var(--c-ink-600);
  cursor: pointer; padding: 4px; border-radius: var(--r-xs);
}
.alert__close:hover { background: rgba(0,0,0,.06); color: var(--c-ink-900); }
.alert--info { background: var(--c-info-50); border-color: #B5CDE5; color: var(--c-blue-700); }
.alert--success { background: var(--c-success-50); border-color: #B6DCC6; color: #0E5530; }
.alert--warn { background: var(--c-warn-50); border-color: #F1D6A6; color: #6B3A00; }
.alert--danger { background: var(--c-danger-50); border-color: #F0BCC2; color: #7C0511; }

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-lg);
  padding: var(--s-5);
  display: flex; flex-direction: column; gap: var(--s-3);
  transition: box-shadow .15s, border-color .15s, transform .15s;
}
.card--hover:hover { box-shadow: var(--sh-2); border-color: var(--c-ink-300); }
.card__kicker {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; color: var(--c-blue);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.card__title { font-size: 18px; font-weight: 700; color: var(--c-ink-900); line-height: 1.3; }
.card__desc { font-size: 14px; color: var(--c-ink-600); }
.card__meta { display: flex; gap: var(--s-3); font-size: 13px; color: var(--c-ink-600); flex-wrap: wrap; }
.card__meta span { display: inline-flex; align-items: center; gap: 6px; }
.card__footer {
  margin-top: auto; padding-top: var(--s-3);
  display: flex; justify-content: space-between; align-items: center;
}
.card--accent {
  border-top: 4px solid var(--c-blue);
}
.card--faculty {
  position: relative; overflow: hidden;
  color: #fff; padding: var(--s-6);
  min-height: 168px;
}
.card--faculty::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(30deg,  rgba(255,255,255,.10) 0 1px, transparent 1px 38px),
    repeating-linear-gradient(-30deg, rgba(255,255,255,.10) 0 1px, transparent 1px 38px);
  pointer-events: none;
}
.card--faculty .card__title { color: #fff; position: relative; z-index: 1; }
.card--faculty .card__desc { color: rgba(255,255,255,.85); position: relative; z-index: 1; }
.card--faculty .card__kicker { color: rgba(255,255,255,.85); position: relative; z-index: 1; }

/* ---------- Tabs ---------- */
.tabs {
  border-bottom: 1px solid var(--c-ink-200);
  display: flex; gap: 4px;
}
.tabs__btn {
  background: none; border: none; cursor: pointer;
  padding: 12px 16px;
  font: inherit; font-weight: 600; font-size: 14px;
  color: var(--c-ink-600);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.tabs__btn:hover { color: var(--c-blue); }
.tabs__btn[aria-selected="true"] { color: var(--c-blue); border-bottom-color: var(--c-blue); }
.tabs__panel { padding: var(--s-5) 0; }

/* ---------- Breadcrumbs ---------- */
.crumbs { display: flex; align-items: center; gap: 6px; font-size: 14px; flex-wrap: wrap; }
.crumbs a { color: var(--c-ink-600); text-decoration: none; padding: 4px 6px; border-radius: 4px; }
.crumbs a:hover { color: var(--c-blue); background: var(--c-blue-50); }
.crumbs span[aria-current] { color: var(--c-ink-900); font-weight: 600; padding: 4px 6px; }
.crumbs svg { color: var(--c-ink-400); }

/* ---------- Pagination ---------- */
.pag { display: inline-flex; align-items: center; gap: 4px; }
.pag button, .pag a {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--c-ink-200);
  background: #fff; color: var(--c-ink-800);
  font: inherit; font-weight: 600; font-size: 14px;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-decoration: none;
}
.pag button:hover, .pag a:hover { background: var(--c-blue-50); border-color: var(--c-blue-200); color: var(--c-blue); }
.pag button[aria-current], .pag a[aria-current] { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.pag button[disabled] { opacity: .4; pointer-events: none; }

/* ---------- Tabela ---------- */
.tbl {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
}
.tbl thead th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-ink-600);
  font-weight: 700;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--c-ink-200);
  background: var(--c-ink-50);
}
.tbl td {
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--c-ink-100);
  vertical-align: middle;
  color: var(--c-ink-800);
}
.tbl tbody tr:hover { background: var(--c-blue-50); }
.tbl-wrap { border: 1px solid var(--c-ink-200); border-radius: var(--r-md); overflow: hidden; }

/* ---------- Avatar ---------- */
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--c-blue-100); color: var(--c-blue-700);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
  flex-shrink: 0;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--c-ink-200);
}
.avatar--lg { width: 48px; height: 48px; font-size: 16px; }
.avatar--sm { width: 28px; height: 28px; font-size: 11px; }
.avatar-stack { display: inline-flex; }
.avatar-stack .avatar + .avatar { margin-left: -10px; }

/* ---------- Progress ---------- */
.progress {
  width: 100%; height: 8px;
  background: var(--c-ink-200);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.progress__bar { height: 100%; background: var(--c-blue); border-radius: var(--r-pill); transition: width .3s; }
.progress--success .progress__bar { background: var(--c-success); }
.progress--danger .progress__bar { background: var(--c-danger); }

/* Spinner */
.spinner {
  width: 22px; height: 22px;
  border: 3px solid var(--c-blue-100);
  border-top-color: var(--c-blue);
  border-radius: 50%;
  animation: spin .9s linear infinite;
  display: inline-block;
}
.skeleton {
  background: linear-gradient(90deg, var(--c-ink-100) 25%, var(--c-ink-200) 50%, var(--c-ink-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
  border-radius: var(--r-sm);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ---------- Tooltip ---------- */
.tt { position: relative; display: inline-block; }
.tt__bubble {
  position: absolute;
  bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  background: var(--c-ink-900); color: #fff;
  padding: 6px 10px;
  font-size: 12px; font-weight: 500;
  white-space: nowrap;
  border-radius: var(--r-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s, transform .15s;
}
.tt__bubble::after {
  content: ""; position: absolute;
  top: 100%; left: 50%; transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--c-ink-900);
}
.tt:hover .tt__bubble,
.tt:focus-within .tt__bubble {
  opacity: 1; transform: translateX(-50%) translateY(-2px);
}

/* ---------- Accordion ---------- */
.acc {
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
  overflow: hidden;
  background: #fff;
}
.acc__item + .acc__item { border-top: 1px solid var(--c-ink-200); }
.acc__btn {
  width: 100%; text-align: left;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s-4) var(--s-5);
  background: #fff;
  border: none;
  font: inherit; font-weight: 600; font-size: 15px;
  color: var(--c-ink-900);
  cursor: pointer;
}
.acc__btn:hover { background: var(--c-ink-50); }
.acc__btn svg { transition: transform .2s; color: var(--c-blue); }
.acc__btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.acc__panel {
  padding: 0 var(--s-5) var(--s-5);
  color: var(--c-ink-700); font-size: 14px;
}

/* ---------- Dropdown ---------- */
.dd { position: relative; display: inline-block; }
.dd__menu {
  position: absolute; top: calc(100% + 6px); left: 0;
  min-width: 220px;
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
  box-shadow: var(--sh-3);
  padding: 6px;
  z-index: 50;
}
.dd__menu--right { left: auto; right: 0; }
.dd__item {
  width: 100%; text-align: left;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  font-size: 14px;
  font: inherit;
  color: var(--c-ink-900);
  background: none; border: none; cursor: pointer;
  border-radius: var(--r-xs);
  text-decoration: none;
}
.dd__item:hover, .dd__item:focus { background: var(--c-blue-50); color: var(--c-blue-700); outline: none; }
.dd__item.is-danger { color: var(--c-red); }
.dd__item.is-danger:hover { background: var(--c-red-50); }
.dd__sep { height: 1px; background: var(--c-ink-200); margin: 4px 0; }
.dd__label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--c-ink-500); padding: 6px 12px 4px; font-weight: 700; }

/* ---------- Toast ---------- */
.toast-region {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: 1000;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-left: 4px solid var(--c-blue);
  border-radius: var(--r-md);
  padding: 12px 14px;
  min-width: 280px; max-width: 360px;
  box-shadow: var(--sh-3);
  display: flex; gap: 10px; align-items: flex-start;
  animation: slideIn .25s ease-out;
}
.toast--success { border-left-color: var(--c-success); }
.toast--danger { border-left-color: var(--c-danger); }
.toast--warn { border-left-color: var(--c-warn); }
.toast__title { font-weight: 700; font-size: 14px; margin: 0; }
.toast__msg { font-size: 13px; color: var(--c-ink-700); margin: 2px 0 0; }
.toast__close {
  margin-left: auto; background: none; border: none; cursor: pointer;
  color: var(--c-ink-500); padding: 2px; border-radius: 4px;
}
.toast__close:hover { background: var(--c-ink-100); color: var(--c-ink-900); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15, 25, 45, 0.55);
  backdrop-filter: blur(4px);
  display: grid; place-items: center;
  padding: 24px;
  z-index: 800;
  animation: fadeIn .15s ease-out;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: #fff;
  border-radius: var(--r-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: 0 24px 60px rgba(0,17,46,.35);
  overflow: hidden;
  animation: popIn .2s ease-out;
}
@keyframes popIn { from { transform: translateY(8px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }
.modal__head {
  padding: var(--s-5) var(--s-6) 0;
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--s-4);
}
.modal__title { font-size: 20px; font-weight: 700; color: var(--c-ink-900); }
.modal__close {
  background: none; border: none; cursor: pointer; padding: 6px;
  color: var(--c-ink-600); border-radius: var(--r-sm);
}
.modal__close:hover { background: var(--c-ink-100); color: var(--c-ink-900); }
.modal__body { padding: var(--s-4) var(--s-6) var(--s-6); }
.modal__body p { margin: 0 0 var(--s-3); color: var(--c-ink-700); }
.modal__footer {
  padding: var(--s-4) var(--s-6);
  background: var(--c-ink-50);
  border-top: 1px solid var(--c-ink-200);
  display: flex; justify-content: flex-end; gap: var(--s-3);
}
.modal--danger .modal__icon-circle {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-red-50); color: var(--c-red);
  display: grid; place-items: center;
  margin-bottom: var(--s-3);
}

/* ---------- Pomocnicze ---------- */
.stack { display: flex; flex-direction: column; gap: var(--s-4); }
.stack-sm { display: flex; flex-direction: column; gap: var(--s-2); }
.row { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
@media (max-width: 880px) {
  .cols-2, .cols-3 { grid-template-columns: 1fr; }
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  .section { padding: var(--s-7) var(--s-5); }
  .hero { padding: var(--s-7) var(--s-5); }
}

.token {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-blue-700);
  background: var(--c-blue-50);
  padding: 2px 6px;
  border-radius: 4px;
}

.divider { height: 1px; background: var(--c-ink-200); margin: var(--s-5) 0; }
.legend { font-size: 12px; color: var(--c-ink-600); margin-top: var(--s-2); }

/* ============================================================
   Element library — wzorce z platformy e-learningowej UwS
   ============================================================ */

/* ---------- Stepper (pionowy) ---------- */
.stepper { display: flex; flex-direction: column; gap: 2px; }
.step {
  display: grid; grid-template-columns: 36px 1fr; gap: 14px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  cursor: pointer;
  position: relative;
  background: transparent;
  border: none;
  text-align: left;
  font: inherit;
  width: 100%;
  color: var(--c-ink-800);
}
.step + .step::before {
  content: ""; position: absolute;
  left: 32px; top: -2px; height: 14px; width: 2px;
  background: var(--c-ink-200);
}
.step:hover { background: var(--c-ink-50); }
.step__num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--c-ink-300);
  color: var(--c-ink-600);
  font-weight: 700; font-size: 14px;
  display: grid; place-items: center;
  font-family: var(--font-mono);
}
.step__body strong { display: block; font-size: 14px; font-weight: 600; color: var(--c-ink-900); }
.step__body small { color: var(--c-ink-600); font-size: 12px; }
.step.is-done .step__num {
  background: var(--c-success); border-color: var(--c-success); color: #fff;
}
.step.is-active .step__num {
  background: var(--c-blue); border-color: var(--c-blue); color: #fff;
  box-shadow: 0 0 0 4px rgba(0,61,124,.16);
}
.step.is-active { background: var(--c-blue-50); }
.step.is-active .step__body strong { color: var(--c-blue-700); }
.step.is-locked .step__num { background: var(--c-ink-100); color: var(--c-ink-400); }
.step.is-locked .step__body strong { color: var(--c-ink-500); }

/* Stepper poziomy */
.stepper--h {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 0;
}
.stepper--h .step {
  grid-template-columns: 1fr;
  text-align: center;
  align-items: center;
  justify-items: center;
  position: relative;
  padding: 8px 12px 12px;
}
.stepper--h .step::before { display: none; }
.stepper--h .step + .step::after {
  content: ""; position: absolute; top: 25px; left: -50%; right: 50%;
  height: 2px; background: var(--c-ink-200); z-index: 0;
}
.stepper--h .step.is-done + .step::after,
.stepper--h .step.is-active + .step::after { background: var(--c-success); }
.stepper--h .step__num { position: relative; z-index: 1; }

/* ---------- Stat card ---------- */
.stat {
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: flex; flex-direction: column; gap: 4px;
}
.stat__label { font-size: 12px; color: var(--c-ink-600); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.stat__val { font-size: 32px; font-weight: 700; color: var(--c-ink-900); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat__delta {
  font-size: 12px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 4px;
}
.stat__delta--up { color: var(--c-success); }
.stat__delta--down { color: var(--c-danger); }
.stat--ink {
  background: var(--c-blue);
  color: #fff;
  border-color: var(--c-blue);
  background-image:
    repeating-linear-gradient(30deg,  rgba(255,255,255,.08) 0 1px, transparent 1px 30px),
    repeating-linear-gradient(-30deg, rgba(255,255,255,.08) 0 1px, transparent 1px 30px);
}
.stat--ink .stat__label, .stat--ink .stat__val { color: #fff; }
.stat--ink .stat__label { color: rgba(255,255,255,.7); }

/* ---------- Key-value ---------- */
.eyebrow {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-ink-600);
  font-weight: 700;
}
.kv { display: flex; flex-direction: column; gap: 2px; }
.kv__k { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-ink-600); font-weight: 700; }
.kv__v { font-size: 14px; font-weight: 600; color: var(--c-ink-900); }
.kv-row { display: flex; gap: 28px; flex-wrap: wrap; }

.tag-dot {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-size: 12px; font-weight: 500;
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-pill);
  color: var(--c-ink-800);
}
.tag-dot .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-blue); }

/* ---------- File upload (dropzone) ---------- */
.dropzone {
  border: 2px dashed var(--c-ink-300);
  border-radius: var(--r-md);
  padding: 32px;
  text-align: center;
  background: var(--c-ink-50);
  transition: border-color .15s, background .15s;
  cursor: pointer;
}
.dropzone:hover, .dropzone.is-over {
  border-color: var(--c-blue);
  background: var(--c-blue-50);
}
.dropzone__icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--c-blue-100); color: var(--c-blue);
  display: inline-grid; place-items: center;
  margin-bottom: 12px;
}
.dropzone__icon svg { margin: auto; }
.file-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-sm);
}
.file-row__icon {
  width: 36px; height: 36px;
  background: var(--c-blue-50); color: var(--c-blue);
  border-radius: var(--r-xs);
  display: grid; place-items: center;
}
.file-row__body { flex: 1; min-width: 0; }
.file-row__name { font-weight: 600; font-size: 14px; }
.file-row__meta { font-size: 12px; color: var(--c-ink-600); }

/* ---------- Search / filter bar ---------- */
.searchbar {
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 8px 5px 12px;
  background: var(--c-blue-50);
  border: 1px solid var(--c-blue-200);
  color: var(--c-blue-700);
  border-radius: var(--r-pill);
  font-size: 13px; font-weight: 600;
}
.chip__x {
  background: transparent; border: none; cursor: pointer;
  color: var(--c-blue-700); padding: 2px; border-radius: 50%;
  display: inline-grid; place-items: center;
}
.chip__x:hover { background: var(--c-blue-200); }

/* ---------- Lista ---------- */
.list {
  background: #fff;
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
  overflow: hidden;
}
.list__item {
  display: flex; gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-ink-100);
  align-items: center;
}
.list__item:last-child { border-bottom: none; }
.list__item:hover { background: var(--c-ink-50); }
.list__body { flex: 1; min-width: 0; }
.list__title { font-weight: 600; font-size: 15px; color: var(--c-ink-900); }
.list__sub { font-size: 13px; color: var(--c-ink-600); }
.list__time { font-size: 12px; color: var(--c-ink-500); white-space: nowrap; }

/* Timeline */
.timeline { display: flex; flex-direction: column; }
.tl-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  padding-bottom: 20px;
  position: relative;
}
.tl-item:not(:last-child)::before {
  content: ""; position: absolute;
  left: 19px; top: 36px; bottom: 0;
  width: 2px; background: var(--c-ink-200);
}
.tl-dot {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--c-blue-50); color: var(--c-blue);
  display: grid; place-items: center;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--c-ink-200);
  z-index: 1;
}
.tl-body { padding-top: 6px; }
.tl-title { font-weight: 600; font-size: 14px; color: var(--c-ink-900); }
.tl-meta { font-size: 12px; color: var(--c-ink-600); }

/* Helpers */
.hairline { height: 1px; background: var(--c-ink-200); border: 0; }
.eyebrow-blue { color: var(--c-blue); }

/* Visually hidden but accessible */
.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;
}