/* ═══════════════════════════════════════════════════════════
   Arkusze Egzaminacyjne — Frontend CSS (Light Theme)
   ═══════════════════════════════════════════════════════════ */

/* ── Zmienne kolorów — dopasowane do palety sekcji „Materiały" (materialy.css) ── */
:root {
  --ark-bg:          #f5f6fd;
  --ark-card:        #ffffff;
  --ark-border:      #e6e8f7;
  --ark-border-soft: #f1f2fb;
  --ark-text:        #0f1130;
  --ark-text-sec:    #5b6187;
  --ark-text-muted:  #8a8fb0;
  --ark-accent:      #4f46e5;
  --ark-accent-bg:   #eef0fd;
  --ark-accent-soft: rgba(79,70,229,.1);
  --ark-shadow:      0 10px 28px rgba(24,26,68,.08);
  --ark-shadow-hover:0 22px 50px rgba(24,26,68,.16);
  --ark-radius:      16px;
}

/* ── Pasek przewijania — slim, dopasowany do palety (strony arkusza/zadania) ── */
html { scrollbar-width: thin; scrollbar-color: #c3c7e6 transparent; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: #c3c7e6;
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: #a2a8dc; background-clip: padding-box; }
::-webkit-scrollbar-corner { background: transparent; }

/* ── Globalne kontenery — pełniejsze wykorzystanie szerokości ekranu ── */
.ark-page {
  max-width: 1840px;
  margin: 0 auto;
  padding: 0 .85rem 5rem;
  background: var(--ark-bg);
  min-height: 60vh;
}

.ark-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.5rem .9rem 5rem;
  background: var(--ark-bg);
}

.ark-error {
  text-align: center;
  color: #ef4444;
  padding: 2rem;
  font-size: .95rem;
}

/* ── Hero ── */
.ark-hero {
  text-align: center;
  padding: 3rem 1rem 2.5rem;
  border-radius: 20px;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}
.ark-hero-default {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.ark-hero-mat {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 60%, #312e81 100%);
}
.ark-hero-fiz {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 60%, #4c1d95 100%);
}
.ark-hero-che {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 60%, #92400e 100%);
}
.ark-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.ark-hero-icon {
  font-size: 3rem;
  margin-bottom: .75rem;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,.3));
}
.ark-hero h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: .6rem;
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.ark-hero p {
  font-size: 1rem;
  color: rgba(255,255,255,.75);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}
.ark-hero-meta {
  display: flex;
  justify-content: center;
  gap: .5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.ark-hero-badge {
  display: inline-block;
  padding: .3rem .85rem;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 20px;
  font-size: .82rem;
  font-weight: 600;
  color: #fff;
  backdrop-filter: blur(4px);
}

/* ── Kafelki przedmiotów ── */
.ark-subj-tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.ark-stile {
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
  transition: transform .2s, box-shadow .2s;
}
.ark-stile:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
}

.ark-stile-top {
  padding: 1.75rem 1.5rem 1.25rem;
  flex: 1;
}
.ark-stile-icon {
  display: block;
  font-size: 2.5rem;
  margin-bottom: .75rem;
}
.ark-stile-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: .5rem;
  line-height: 1.2;
}
.ark-stile-desc {
  font-size: .85rem;
  color: rgba(255,255,255,.75);
  line-height: 1.6;
}

.ark-stile-links {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 0 1.5rem 1.25rem;
}
.ark-stile-link {
  display: block;
  padding: .42rem .75rem;
  border-radius: 8px;
  font-size: .82rem;
  font-weight: 500;
  text-decoration: none;
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.9);
  border: 1px solid rgba(255,255,255,.15);
  transition: background .13s;
}
.ark-stile-link:hover { background: rgba(255,255,255,.22); color: #fff; }

.ark-stile-btn {
  display: block;
  margin: 0 1.5rem 1.5rem;
  padding: .6rem 1rem;
  border-radius: 10px;
  text-align: center;
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
  background: rgba(255,255,255,.95);
  transition: background .13s, transform .13s;
}
.ark-stile-btn:hover { background: #fff; transform: scale(1.02); }

/* Kolory kafelków */
.ark-stile-mat { background: linear-gradient(160deg, #2563eb 0%, #1d4ed8 50%, #1e40af 100%); }
.ark-stile-mat .ark-stile-btn { color: #1d4ed8; }
.ark-stile-fiz { background: linear-gradient(160deg, #7c3aed 0%, #6d28d9 50%, #5b21b6 100%); }
.ark-stile-fiz .ark-stile-btn { color: #6d28d9; }
.ark-stile-che { background: linear-gradient(160deg, #ea580c 0%, #c2410c 50%, #9a3412 100%); }
.ark-stile-che .ark-stile-btn { color: #c2410c; }

/* ── Nagłówek "Pełne archiwum" ── */
.ark-all-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: 12px;
  margin-bottom: 1.25rem;
  box-shadow: var(--ark-shadow);
}
.ark-all-header-icon { font-size: 1.6rem; }
.ark-all-header h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ark-text);
  margin: 0 0 .15rem;
}
.ark-all-header p {
  font-size: .82rem;
  color: var(--ark-text-muted);
  margin: 0;
}

/* ── Breadcrumb ── */
.ark-breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1.25rem;
  font-size: .82rem;
}
.ark-back-link {
  color: var(--ark-text-sec);
  text-decoration: none;
  transition: color .15s;
}
.ark-back-link:hover { color: var(--ark-accent); }
.ark-bc-sep     { color: var(--ark-border); }
.ark-bc-current { color: var(--ark-text-muted); }

/* ════════════════════════════════════════════════════════════
   LAYOUT: SIDEBAR FILTRÓW (lista arkuszy)
   ════════════════════════════════════════════════════════════ */

/* Mobile toggle button */
.ark-sb-toggle {
  display: none;
  width: 100%;
  align-items: center;
  gap: .6rem;
  padding: .65rem 1.1rem;
  margin-bottom: 1rem;
  background: #1e293b;
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 10px;
  color: #94a3b8;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
  transition: background .15s;
}
.ark-sb-toggle:hover { background: #263445; }
.ark-sb-badge {
  margin-left: auto;
  background: var(--ark-accent-soft);
  color: var(--ark-accent);
  font-size: .75rem;
  font-weight: 700;
  padding: .15rem .55rem;
  border-radius: 20px;
}

/* Overlay (mobile) */
.ark-sb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 40;
  backdrop-filter: blur(2px);
}
.ark-sb-overlay.show { display: block; }

/* Dwukolumnowy layout */
.ark-page-layout {
  display: grid;
  grid-template-columns: 225px 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* ── Sidebar (ciemny) ── */
.ark-list-sidebar {
  position: sticky;
  top: 75px;
  background: #1e293b;
  border: 1px solid rgba(148,163,184,.1);
  border-radius: var(--ark-radius);
  overflow: hidden;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
  box-shadow: 0 4px 24px rgba(0,0,0,.2);
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}
.ark-list-sidebar::-webkit-scrollbar { width: 4px; }
.ark-list-sidebar::-webkit-scrollbar-track { background: transparent; }
.ark-list-sidebar::-webkit-scrollbar-thumb { background: #334155; border-radius: 2px; }

.ark-sb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .75rem 1rem;
  border-bottom: 1px solid rgba(148,163,184,.08);
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: #64748b;
  background: #0f172a;
}
.ark-sb-close {
  display: none;
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 1rem;
  padding: .2rem .4rem;
  border-radius: 5px;
  transition: color .15s, background .15s;
}
.ark-sb-close:hover { color: #f1f5f9; background: rgba(148,163,184,.1); }

.ark-sb-section { border-bottom: 1px solid rgba(148,163,184,.06); padding: .4rem 0; }
.ark-sb-section:last-child { border-bottom: none; }

.ark-sb-label {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: #475569;
  padding: .45rem 1rem .25rem;
}

.ark-sb-link {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .42rem 1rem;
  font-size: .83rem;
  color: #94a3b8;
  text-decoration: none;
  transition: all .12s;
  border-left: 2px solid transparent;
}
.ark-sb-link:hover {
  background: rgba(14,165,233,.08);
  color: #e2e8f0;
  border-left-color: rgba(14,165,233,.4);
}
.ark-sb-link.active {
  background: rgba(14,165,233,.12);
  color: #38bdf8;
  border-left-color: #0ea5e9;
  font-weight: 600;
}

/* ── Zakładki przedmiotów (subject tabs) ── */
.ark-sb-subj-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 0;
  border-bottom: 1px solid rgba(148,163,184,.08);
}
.ark-sst {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .55rem .2rem;
  font-size: .72rem;
  font-weight: 600;
  text-decoration: none;
  color: #64748b;
  transition: all .13s;
  border-bottom: 2px solid transparent;
  text-align: center;
}
.ark-sst:hover        { color: #e2e8f0; background: rgba(255,255,255,.04); }
.ark-sst.active       { color: #fff; background: rgba(255,255,255,.08); border-bottom-color: #0ea5e9; }
.ark-sst-mat.active   { color: #93c5fd; border-bottom-color: #3b82f6; }
.ark-sst-fiz.active   { color: #c4b5fd; border-bottom-color: #8b5cf6; }
.ark-sst-che.active   { color: #fdba74; border-bottom-color: #f97316; }

/* ── Karty poziomów egzaminu ── */
.ark-slevel {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem .85rem;
  text-decoration: none;
  transition: background .12s;
  border-left: 2px solid transparent;
}
.ark-slevel:hover    { background: rgba(255,255,255,.05); }
.ark-slevel.active   { background: rgba(14,165,233,.1); border-left-color: #0ea5e9; }

.ark-slevel-ico {
  width: 30px; height: 30px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem;
  flex-shrink: 0;
}
.ark-slevel-text { display: flex; flex-direction: column; gap: .05rem; }
.ark-slevel-name { font-size: .8rem; font-weight: 600; color: #cbd5e1; line-height: 1.2; }
.ark-slevel-sub  { font-size: .68rem; color: #64748b; }
.ark-slevel.active .ark-slevel-name { color: #38bdf8; }
.ark-slevel.active .ark-slevel-sub  { color: #7dd3fc; }

/* ── Chips roku ── */
.ark-sb-ychips {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  padding: .3rem .85rem .6rem;
}
.ark-sychip {
  display: inline-block;
  padding: .22rem .6rem;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  text-decoration: none;
  color: #64748b;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(148,163,184,.12);
  transition: all .12s;
}
.ark-sychip:hover  { background: rgba(14,165,233,.1); color: #7dd3fc; border-color: rgba(14,165,233,.3); }
.ark-sychip.active { background: rgba(14,165,233,.18); color: #38bdf8; border-color: #0ea5e9; }

/* ── Kategorie accordion ── */
.ark-sb-cats-det { }
.ark-sb-cats-sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .55rem .85rem;
  cursor: pointer;
  list-style: none;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #64748b;
  transition: color .13s;
  user-select: none;
}
.ark-sb-cats-sum::-webkit-details-marker { display: none; }
.ark-sb-cats-sum:hover { color: #94a3b8; }
.ark-sb-cats-arr { transition: transform .2s; flex-shrink: 0; }
.ark-sb-cats-det[open] .ark-sb-cats-arr { transform: rotate(180deg); }

.ark-sb-cats-group { padding: .2rem 0 .4rem; }
.ark-sb-cats-subj {
  font-size: .65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: #334155;
  padding: .3rem .85rem .15rem;
}
.ark-sb-cat-link { padding: .35rem .85rem !important; font-size: .78rem !important; }

/* ── Główna kolumna z arkuszami ── */
.ark-main {}

/* ═══════════════════════════════════════════════════════════
   SIATKA KAFELKÓW
   ═══════════════════════════════════════════════════════════ */

.ark-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}

.ark-card {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: var(--ark-radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--ark-shadow);
  transition: transform .2s, box-shadow .2s;
}
.ark-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--ark-shadow-hover);
}
.ark-card-mat { border-top: 3px solid #3b82f6; }
.ark-card-fiz { border-top: 3px solid #8b5cf6; }
.ark-card-che { border-top: 3px solid #f97316; }

.ark-card-ribbon { display: flex; gap: .35rem; padding: .7rem 1rem .2rem; }
.ark-tag {
  display: inline-block;
  padding: .15rem .48rem;
  border-radius: 5px;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.ark-tag-matura  { background: #e0f2fe; color: #0369a1; }
.ark-tag-osm     { background: #dcfce7; color: #15803d; }
.ark-tag-probna  { background: #fef9c3; color: #a16207; }
.ark-tag-level   { background: #f1f5f9; color: #64748b; }

.ark-card-body   { padding: .65rem 1rem .85rem; flex: 1; }
.ark-card-subject {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--ark-text-muted);
  margin-bottom: .35rem;
}
.ark-card-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--ark-text);
  line-height: 1.3;
  margin-bottom: .3rem;
}
.ark-card-year  { font-size: .78rem; color: var(--ark-text-muted); margin-bottom: .45rem; }
.ark-card-desc  { font-size: .78rem; color: var(--ark-text-sec); line-height: 1.5; margin-bottom: .8rem; }

.ark-card-stats  { display: flex; gap: .85rem; margin-bottom: .45rem; }
.ark-stat-item   { display: flex; flex-direction: column; align-items: center; }
.ark-stat-num    { font-size: 1.1rem; font-weight: 700; color: var(--ark-text); }
.ark-stat-label  { font-size: .65rem; color: var(--ark-text-muted); text-transform: uppercase; letter-spacing: .05em; }

.ark-progress-bar  { height: 5px; background: #f1f5f9; border-radius: 3px; overflow: hidden; }
.ark-progress-fill { height: 100%; background: linear-gradient(90deg,#0ea5e9,#34d399); border-radius: 3px; }

.ark-card-footer {
  padding: .75rem 1rem;
  border-top: 1px solid var(--ark-border-soft);
  display: flex;
  gap: .5rem;
  align-items: center;
  background: #fafafa;
}

/* ── Przyciski ── */
.ark-btn-primary {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .48rem 1rem;
  border-radius: 8px;
  background: var(--ark-accent); color: #fff;
  font-size: .82rem; font-weight: 600;
  text-decoration: none; cursor: pointer; border: none;
  transition: background .15s, box-shadow .15s;
  box-shadow: 0 2px 6px rgba(14,165,233,.3);
}
.ark-btn-primary:hover { background: #0284c7; box-shadow: 0 4px 12px rgba(14,165,233,.4); }

.ark-btn-secondary {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .48rem .9rem;
  border-radius: 8px;
  background: transparent; color: var(--ark-text-sec);
  font-size: .82rem; font-weight: 500;
  text-decoration: none; cursor: pointer;
  border: 1px solid var(--ark-border);
  transition: all .15s;
}
.ark-btn-secondary:hover { background: var(--ark-bg); color: var(--ark-text); border-color: #cbd5e1; }

/* ── Empty state ── */
.ark-empty { text-align: center; padding: 4rem 1rem; color: var(--ark-text-muted); }
.ark-empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.ark-empty h2   { font-size: 1.3rem; color: var(--ark-text-sec); margin-bottom: .5rem; }
.ark-empty p    { font-size: .9rem; margin-bottom: 1.5rem; line-height: 1.65; color: var(--ark-text-sec); }

/* ════════════════════════════════════════════════════════════
   WIDOK EGZAMINU — layout z lewym sidebarem
   ════════════════════════════════════════════════════════════ */

.ark-exam-page { padding-top: 1.5rem; }

.ark-exam-layout {
  display: grid;
  grid-template-columns: 215px 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* ── Sidebar egzaminu ── */
.ark-exam-sidebar {
  position: sticky;
  top: 75px;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: .65rem;
  scrollbar-width: thin;
  scrollbar-color: var(--ark-border) transparent;
}

.ark-esb-card {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: 12px;
  padding: .85rem 1rem;
  box-shadow: var(--ark-shadow);
}
.ark-esb-label {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--ark-text-muted);
  margin-bottom: .5rem;
}
.ark-esb-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--ark-text);
  line-height: 1.35;
  margin-bottom: .3rem;
}
.ark-esb-meta {
  font-size: .77rem;
  color: var(--ark-text-sec);
  margin-bottom: .45rem;
  line-height: 1.5;
}
.ark-esb-stats {
  font-size: .78rem;
  color: var(--ark-text-sec);
  margin-bottom: .6rem;
}
.ark-esb-pdf { margin-top: .25rem; font-size: .78rem; padding: .38rem .75rem; }
.ark-esb-cats { display: flex; flex-wrap: wrap; gap: .3rem; }

/* Nawigacja zadań */
.ark-task-nav { display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .55rem; }
.ark-task-nav-item {
  width: 34px; height: 34px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; font-weight: 700;
  text-decoration: none;
  color: var(--ark-text-sec);
  border: 1px solid var(--ark-border);
  background: var(--ark-card);
  transition: all .13s;
}
.ark-task-nav-item:hover { background: var(--ark-accent-bg); color: var(--ark-accent); border-color: #bae6fd; }
.ark-task-nav-item.has-sol { border-color: #bbf7d0; color: #15803d; background: #f0fdf4; }

.ark-nav-legend {
  font-size: .68rem;
  color: var(--ark-text-muted);
  display: flex;
  align-items: center;
  gap: .3rem;
  flex-wrap: wrap;
}
.ark-nl-dot {
  width: 10px; height: 10px; border-radius: 3px;
  background: var(--ark-bg);
  border: 1px solid var(--ark-border);
  display: inline-block;
}
.ark-nl-dot.has-sol { border-color: #86efac; background: #f0fdf4; }

/* ── Nagłówek egzaminu ── */
.ark-exam-head-mobile { display: none; }
.ark-exam-title {
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-weight: 800;
  color: var(--ark-text);
  line-height: 1.2;
  margin-bottom: .55rem;
}
.ark-exam-title-desktop { display: block; margin-bottom: .5rem; }
.ark-exam-desc  { color: var(--ark-text-sec); font-size: .9rem; line-height: 1.6; margin-bottom: 1.25rem; }
.ark-exam-meta  { display: flex; flex-wrap: wrap; gap: .4rem; font-size: .8rem; color: var(--ark-text-muted); margin-bottom: .9rem; }

/* ════════════════════════════════════════════════════════════
   ZADANIA
   ════════════════════════════════════════════════════════════ */

.ark-tasks-list { display: flex; flex-direction: column; gap: 1rem; }

.ark-task {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: var(--ark-radius);
  overflow: hidden;
  box-shadow: var(--ark-shadow);
  transition: box-shadow .15s;
}
.ark-task:hover { box-shadow: var(--ark-shadow-hover); }
.ark-task:target { border-color: #7dd3fc; box-shadow: 0 0 0 3px rgba(14,165,233,.1); }

/* Nagłówek zadania */
.ark-task-head {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  padding: .9rem 1.1rem;
  cursor: pointer;
  user-select: none;
  transition: background .12s;
  background: var(--ark-card);
}
.ark-task-head:hover { background: #f8fafc; }

.ark-task-num {
  min-width: 36px; height: 36px;
  background: linear-gradient(135deg,#0ea5e9,#6366f1);
  color: #fff;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .82rem;
  flex-shrink: 0;
}
.ark-task-info { flex: 1; min-width: 0; }
.ark-task-meta-row {
  display: flex; flex-wrap: wrap; gap: .4rem;
  align-items: center; margin-bottom: .25rem;
}
.ark-task-type  { font-size: .73rem; color: var(--ark-text-muted); }
.ark-task-pts   { font-size: .73rem; font-weight: 700; color: var(--ark-text-sec); }
.ark-task-img-badge { font-size: .7rem; color: #d97706; }
.ark-task-solved    { font-size: .7rem; color: #15803d; font-weight: 600; }
.ark-task-cats  { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .15rem; }

.ark-task-arrow   { color: var(--ark-text-muted); font-size: .78rem; padding-top: .1rem; flex-shrink: 0; }
.ark-task-permalink {
  flex-shrink: 0;
  font-size: .78rem; color: var(--ark-text-muted);
  text-decoration: none; padding: .22rem .38rem;
  border-radius: 5px; transition: color .15s, background .15s;
  align-self: center;
}
.ark-task-permalink:hover { color: var(--ark-accent); background: var(--ark-accent-bg); }

/* Kategorie-linki */
.ark-cat-link {
  font-size: .7rem;
  padding: .13rem .42rem;
  border-radius: 5px;
  background: #e0f2fe;
  color: #0369a1;
  text-decoration: none;
  border: 1px solid #bae6fd;
  transition: background .13s;
  white-space: nowrap;
}
.ark-cat-link:hover { background: #bae6fd; }

/* Treść zadania */
.ark-task-content {
  padding: .65rem 1.1rem .85rem;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--ark-text);
  border-top: 1px solid var(--ark-border-soft);
}
.ark-task-content p   { margin: .35rem 0; }
.ark-task-content img { max-width: 100%; height: auto; border-radius: 6px; margin: .5rem 0; border: 1px solid var(--ark-border); }

/* Opcje ABCD */
.ark-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .45rem;
  padding: 0 1.1rem .8rem;
}
.ark-option {
  display: flex; align-items: flex-start; gap: .55rem;
  padding: .55rem .8rem;
  border-radius: 9px;
  border: 1.5px solid var(--ark-border);
  background: var(--ark-card);
  cursor: pointer; transition: all .13s;
  font-size: .85rem; color: var(--ark-text-sec);
}
.ark-option:hover    { border-color: var(--ark-accent); background: var(--ark-accent-bg); color: var(--ark-text); }
.ark-option.selected { border-color: var(--ark-accent); background: #e0f2fe; color: var(--ark-text); }
.ark-option.correct  { border-color: #22c55e; background: #f0fdf4; color: #15803d; }
.ark-option.wrong    { border-color: #f87171; background: #fff5f5; color: #dc2626; }

.ark-option-letter {
  width: 21px; height: 21px; border-radius: 5px;
  background: var(--ark-bg);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .75rem; flex-shrink: 0;
  color: var(--ark-text-sec);
  border: 1px solid var(--ark-border);
}
.ark-option-text { line-height: 1.4; }
.ark-check-result { grid-column: 1/-1; font-size: .8rem; padding: .2rem 0; }
.ark-check-ok    { color: #15803d; font-weight: 600; }
.ark-check-err   { color: #dc2626; font-weight: 600; }
.ark-check-info  { color: var(--ark-text-sec); }

/* Przycisk pokaż rozwiązanie */
.ark-show-solution {
  display: block; width: calc(100% - 2.2rem);
  margin: 0 1.1rem .8rem;
  padding: .55rem;
  border-radius: 9px;
  border: 1.5px dashed #bae6fd;
  background: var(--ark-accent-bg); color: var(--ark-accent);
  font-size: .83rem; font-weight: 600;
  cursor: pointer; transition: all .13s; text-align: center;
}
.ark-show-solution:hover { background: #e0f2fe; border-color: var(--ark-accent); }

/* ── Rozwinięte ciało zadania ── */
.ark-task-body { border-top: 1px solid var(--ark-border-soft); }

.ark-task-body-inner { padding: 1rem 1.1rem; }

/* Dwukolumnowy layout: rozwiązanie | panel wzorów */
.ark-task-body-inner.has-panel {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 1rem;
}

.ark-solution-col {}

/* Rozwiązanie */
.ark-solution {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 10px;
  overflow: hidden;
}
.ark-solution-header {
  padding: .55rem .95rem;
  background: #e0f2fe;
  border-bottom: 1px solid #bae6fd;
  font-size: .72rem; font-weight: 700;
  color: #0369a1; text-transform: uppercase; letter-spacing: .06em;
}
.ark-solution-body {
  padding: 1rem;
  font-size: .88rem; line-height: 1.85; color: var(--ark-text);
}
.ark-solution-body h4    { font-size: .92rem; color: var(--ark-text); margin: .8rem 0 .3rem; font-weight: 700; }
.ark-solution-body p     { margin: .35rem 0; }
.ark-solution-body ol,
.ark-solution-body ul    { padding-left: 1.4rem; }
.ark-solution-body li    { margin: .28rem 0; }
.ark-solution-body strong { color: var(--ark-text); font-weight: 700; }

.ark-no-solution {
  text-align: center; padding: 1.1rem;
  color: var(--ark-text-muted); font-size: .83rem; font-style: italic;
}

/* ── Panel wzorów i kategorii ── */
.ark-task-panel {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: 11px;
  padding: .8rem;
  align-self: start;
  position: sticky;
  top: 75px;
  box-shadow: var(--ark-shadow);
}

.ark-panel-section { margin-bottom: .9rem; }
.ark-panel-section:last-child { margin-bottom: 0; }

.ark-panel-title {
  font-size: .63rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .09em;
  color: var(--ark-text-muted); margin-bottom: .45rem;
}
.ark-panel-cats { display: flex; flex-wrap: wrap; gap: .3rem; }

.ark-panel-formula {
  margin-bottom: .65rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--ark-border-soft);
}
.ark-panel-formula:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.ark-formula-name     { font-size: .78rem; font-weight: 700; color: var(--ark-text); margin-bottom: .25rem; }
.ark-formula-latex-sm { font-size: .88rem; color: var(--ark-text); overflow-x: auto; margin-bottom: .2rem; }
.ark-formula-desc     { font-size: .78rem; color: var(--ark-text-sec); line-height: 1.5; }

.ark-formula-details-sm summary {
  font-size: .72rem; color: var(--ark-text-muted); cursor: pointer;
  list-style: none; padding: .15rem 0;
}
.ark-formula-details-sm summary::-webkit-details-marker { display: none; }
.ark-formula-details-sm summary::before { content: '▶ '; font-size: .65rem; }
.ark-formula-details-sm[open] summary::before { content: '▼ '; }

.ark-panel-more-link {
  display: block; margin-top: .5rem;
  font-size: .73rem; color: var(--ark-accent); text-decoration: none;
  transition: color .13s;
}
.ark-panel-more-link:hover { color: #0284c7; text-decoration: underline; }

/* ════════════════════════════════════════════════════════════
   BAZA WZORÓW — /wzory
   ════════════════════════════════════════════════════════════ */

.wz-section { max-width: 1200px; }

/* ── Hero ─────────────────────────────────────────────────── */
.wz-hero {
  position: relative; overflow: hidden;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  padding: 3.25rem 2rem 2.75rem;
  text-align: center;
}
.wz-hero-all { background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1a1f3c 100%); }
.wz-hero-mat { background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 55%, #2563eb 100%); }
.wz-hero-fiz { background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 55%, #7c3aed 100%); }
.wz-hero-che { background: linear-gradient(135deg, #7c2d12 0%, #c2410c 55%, #ea580c 100%); }

/* Pływające symbole matematyczne w tle */
.wz-hero-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; user-select: none;
  object-fit: cover;
}

.wz-hero-inner { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }

.wz-hero-title {
  font-size: clamp(1.55rem, 4vw, 2.5rem);
  font-weight: 800; color: #fff;
  margin: 0 0 .65rem;
  line-height: 1.18;
  letter-spacing: -.02em;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
}

.wz-hero-sub {
  font-size: .97rem; color: rgba(255,255,255,.72);
  line-height: 1.65; margin: 0 auto .95rem; max-width: 560px;
}

.wz-hero-stats {
  display: inline-flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  justify-content: center;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 30px;
  padding: .38rem 1.1rem;
  backdrop-filter: blur(6px);
}
.wz-hero-stat {
  font-size: .82rem; font-weight: 600;
  color: rgba(255,255,255,.9); white-space: nowrap;
}
.wz-hero-sep { color: rgba(255,255,255,.35); font-size: .9rem; }

/* ── Nawigacja przedmiotów ────────────────────────────────── */
.wz-subj-nav {
  display: flex; gap: .5rem; flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1.75rem;
}

.wz-sn-item {
  display: inline-flex; align-items: center; gap: .42rem;
  flex: 0 0 auto;                /* NIE rozciągaj */
  white-space: nowrap;
  padding: .48rem 1rem;
  border-radius: 999px;          /* pill */
  border: 1.5px solid transparent;
  text-decoration: none;
  font-size: .845rem; font-weight: 600;
  transition: filter .15s, box-shadow .15s, transform .12s;
}
.wz-sn-item:hover {
  filter: brightness(.94);
  box-shadow: 0 2px 10px rgba(0,0,0,.12);
  transform: translateY(-1px);
}
.wz-sn-item:active { transform: translateY(0); }

/* Kolory nieaktywne — każdy przedmiot ma własny subtelny odcień */
.wz-sn-all { background: #f1f5f9; border-color: #cbd5e1; color: #475569; }
.wz-sn-mat { background: #eff6ff; border-color: #93c5fd; color: #1d4ed8; }
.wz-sn-fiz { background: #f5f3ff; border-color: #c4b5fd; color: #6d28d9; }
.wz-sn-che { background: #fff7ed; border-color: #fdba74; color: #c2410c; }

/* Kolory aktywne — solidne wypełnienie */
.wz-sn-all.wz-sn-active { background: #334155; border-color: #334155; color: #fff; }
.wz-sn-mat.wz-sn-active { background: #2563eb; border-color: #2563eb; color: #fff; }
.wz-sn-fiz.wz-sn-active { background: #7c3aed; border-color: #7c3aed; color: #fff; }
.wz-sn-che.wz-sn-active { background: #ea580c; border-color: #ea580c; color: #fff; }

.wz-sn-icon {
  width: 18px; height: 18px; flex-shrink: 0; opacity: .85;
}
.wz-sn-item.wz-sn-active .wz-sn-icon { opacity: 1; }

.wz-sn-cnt {
  font-size: .69rem; font-weight: 700;
  background: rgba(0,0,0,.09);
  border-radius: 999px;
  padding: .08rem .42rem;
}
.wz-sn-item.wz-sn-active .wz-sn-cnt {
  background: rgba(255,255,255,.22);
  color: rgba(255,255,255,.92);
}

.wz-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.75rem;
  align-items: start;
}

.wz-sidebar {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: 12px;
  padding: 1rem;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  box-shadow: var(--ark-shadow);
}
.wz-sidebar-title {
  font-size: .7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--ark-text-muted); margin-bottom: .6rem; padding: 0 .25rem;
}
.wz-cat-group {
  font-size: .66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .07em;
  color: var(--ark-text-muted); padding: .6rem .25rem .2rem;
}
.wz-cat-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: .35rem .5rem;
  border-radius: 6px; font-size: .82rem;
  color: var(--ark-text-sec); text-decoration: none;
  transition: all .13s;
}
.wz-cat-item:hover  { background: var(--ark-accent-bg); color: var(--ark-accent); }
.wz-cat-item.active { background: var(--ark-accent-bg); color: var(--ark-accent); font-weight: 600; }
.wz-cat-cnt {
  font-size: .7rem; color: var(--ark-text-muted); font-weight: 700;
  background: var(--ark-bg); padding: .1rem .4rem; border-radius: 4px;
}
.wz-search-form { display: flex; gap: .4rem; margin-top: .5rem; }
.wz-search-input {
  flex: 1; padding: .45rem .7rem;
  background: var(--ark-card); border: 1px solid var(--ark-border);
  border-radius: 8px; color: var(--ark-text); font-size: .82rem;
  outline: none; transition: border-color .15s;
}
.wz-search-input:focus { border-color: var(--ark-accent); }
.wz-search-btn {
  padding: .45rem .7rem;
  background: var(--ark-accent-bg); border: 1px solid #bae6fd;
  border-radius: 8px; color: var(--ark-accent); cursor: pointer; transition: background .13s;
}
.wz-search-btn:hover { background: #e0f2fe; }

.wz-main { min-width: 0; }

.wz-search-info {
  padding: .6rem .85rem; background: var(--ark-accent-bg);
  border: 1px solid #bae6fd; border-radius: 8px;
  font-size: .82rem; color: var(--ark-text-sec); margin-bottom: 1rem;
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
}
.wz-search-info strong { color: var(--ark-accent); }
.wz-search-clear { color: #ef4444; text-decoration: none; margin-left: auto; }
.wz-search-clear:hover { text-decoration: underline; }

.wz-group { margin-bottom: 2.25rem; }
.wz-group-header {
  display: flex; align-items: center; gap: .75rem;
  margin-bottom: 1.1rem; padding: .7rem 1rem;
  border-radius: 10px;
  border-left: 4px solid transparent;
}
.wz-group-header.wz-gh-mat {
  background: linear-gradient(90deg,#eff6ff,transparent);
  border-left-color: #3b82f6;
}
.wz-group-header.wz-gh-fiz {
  background: linear-gradient(90deg,#f5f3ff,transparent);
  border-left-color: #8b5cf6;
}
.wz-group-header.wz-gh-che {
  background: linear-gradient(90deg,#fff7ed,transparent);
  border-left-color: #f97316;
}
.wz-group-subject {
  font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .09em;
  padding: .22rem .6rem; border-radius: 20px;
}
.wz-sub-mat { background: #dbeafe; color: #1d4ed8; }
.wz-sub-fiz { background: #ede9fe; color: #7c3aed; }
.wz-sub-che { background: #ffedd5; color: #c2410c; }
.wz-group-title { font-size: 1rem; font-weight: 700; color: var(--ark-text); margin: 0; }

.wz-formulas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.35rem;
}

/* ── Karta wzoru ─────────────────────────────────────────────────────── */
.wz-formula-card {
  background: var(--ark-card);
  border: 1px solid var(--ark-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,.07), 0 6px 20px rgba(0,0,0,.04);
  transition: transform .2s cubic-bezier(.22,1,.36,1), box-shadow .2s;
  display: flex; flex-direction: column;
}
.wz-formula-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,.12), 0 2px 6px rgba(0,0,0,.06);
}

/* ── Kolorowy nagłówek per-przedmiot ─────────────────────────────────── */
.wz-card-hdr {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: .7rem 1rem .65rem;
  gap: .5rem;
}
.wz-card-hdr-left { display: flex; flex-direction: column; gap: .3rem; }
.wz-card-mat .wz-card-hdr { background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 65%, #3b82f6 100%); }
.wz-card-fiz .wz-card-hdr { background: linear-gradient(135deg, #5b21b6 0%, #7c3aed 65%, #8b5cf6 100%); }
.wz-card-che .wz-card-hdr { background: linear-gradient(135deg, #9a3412 0%, #dc2626 65%, #f97316 100%); }

.wz-card-subj-badge {
  font-size: .67rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: .1em;
  color: rgba(255,255,255,.95);
  background: rgba(255,255,255,.15);
  padding: .2rem .55rem; border-radius: 20px;
  white-space: nowrap;
}
.wz-card-cat-badge {
  font-size: .67rem; font-weight: 600;
  color: rgba(255,255,255,.8);
  padding: .15rem .45rem;
  background: rgba(0,0,0,.18);
  border-radius: 12px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 160px;
}

/* ── Treść karty ─────────────────────────────────────────────────────── */
.wz-card-body {
  padding: .85rem 1rem .95rem;
  display: flex; flex-direction: column; gap: .6rem;
  flex: 1;
}

.wz-formula-name {
  font-size: .92rem; font-weight: 700;
  color: var(--ark-text); line-height: 1.3;
  margin: 0;
}

/* ── Box z wzorem (LaTeX) — pełna wielkość ───────────────────────────── */
.wz-formula-box {
  position: relative;
  border-radius: 10px;
  padding: 1rem .75rem;
  text-align: center;
  min-height: 68px;
  display: flex; align-items: center; justify-content: center;
  overflow: visible;   /* NIE obcinaj dużych wzorów */
}
.wz-card-mat .wz-formula-box { background: #eff6ff; border: 1px solid #bfdbfe; }
.wz-card-fiz .wz-formula-box { background: #f5f3ff; border: 1px solid #ddd6fe; }
.wz-card-che .wz-formula-box { background: #fff7ed; border: 1px solid #fed7aa; }

/* Dekoracja SVG w tle boxa */
.wz-fbox-deco {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; user-select: none;
  overflow: hidden; border-radius: 10px;
}

.wz-formula-latex {
  position: relative; z-index: 1;
  overflow: visible;
}
.wz-card-mat .wz-formula-latex mjx-container { color: #1e3a8a !important; }
.wz-card-fiz .wz-formula-latex mjx-container { color: #5b21b6 !important; }
.wz-card-che .wz-formula-latex mjx-container { color: #9a3412 !important; }
/* Wzór wyrenderowany w pełni — bez scrollbarów */
.wz-formula-box mjx-container { overflow: visible; }

/* ── Sekcja teorii i zastosowań ──────────────────────────────────────── */
.wz-theory {
  border: 1px solid var(--ark-border);
  border-radius: 8px;
  overflow: hidden;
}
.wz-theory-hdr {
  display: flex; align-items: center; gap: .4rem;
  padding: .5rem .75rem;
  cursor: pointer; user-select: none;
  font-size: .78rem; font-weight: 700;
  color: var(--ark-text-sec);
  background: var(--ark-bg);
  list-style: none;
  transition: background .12s;
}
.wz-theory-hdr::-webkit-details-marker { display: none; }
.wz-theory-hdr:hover { background: #e8edf4; }
.wz-theory-chevron { margin-left: auto; transition: transform .2s; }
details.wz-theory[open] .wz-theory-chevron { transform: rotate(180deg); }

.wz-theory-body {
  padding: .7rem .85rem;
  font-size: .82rem; color: var(--ark-text-sec); line-height: 1.7;
  border-top: 1px solid var(--ark-border);
  background: #fff;
}
.wz-theory-body p  { margin: 0 0 .5rem; }
.wz-theory-body p:last-child { margin-bottom: 0; }
.wz-theory-body ul, .wz-theory-body ol { padding-left: 1.25rem; margin: .35rem 0 .5rem; }
.wz-theory-body li { margin: .22rem 0; }
.wz-theory-body strong { color: var(--ark-text); }
.wz-theory-body mjx-container { font-size: 1em !important; }

/* ── Chipsy kategorii M:N ────────────────────────────────────────────── */
.wz-formula-cat-chips {
  display: flex; flex-wrap: wrap; gap: .3rem;
}
.wz-cat-chip {
  display: inline-flex; align-items: center;
  font-size: .66rem; font-weight: 700;
  padding: .18rem .5rem;
  border-radius: 20px;
  white-space: nowrap;
}
.wz-chip-topic { background: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.wz-chip-lvl   { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.wz-chip-exam  { background: #fef9c3; color: #854d0e; border: 1px solid #fde68a; }
.wz-chip-blog  { background: #fce7f3; color: #9d174d; border: 1px solid #fbcfe8; }

/* ── Tagi słów kluczowych ────────────────────────────────────────────── */
.wz-formula-tags { display: flex; flex-wrap: wrap; gap: .28rem; }
.wz-tag {
  font-size: .65rem; padding: .13rem .42rem;
  border-radius: 20px; font-weight: 600;
  border: 1px solid transparent;
}
.wz-card-mat .wz-tag { background: #dbeafe; color: #1d4ed8; border-color: #bfdbfe; }
.wz-card-fiz .wz-tag { background: #ede9fe; color: #6d28d9; border-color: #ddd6fe; }
.wz-card-che .wz-tag { background: #ffedd5; color: #c2410c; border-color: #fed7aa; }

/* ── Stopka karty ────────────────────────────────────────────────────── */
.wz-formula-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: .55rem;
  border-top: 1px solid var(--ark-border-soft);
  margin-top: auto;
}
.wz-tasks-link {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .75rem; font-weight: 600;
  color: var(--ark-text-muted);
  text-decoration: none; transition: color .13s;
}
.wz-tasks-link:hover { color: var(--ark-accent); }
.wz-permalink {
  display: inline-flex; align-items: center;
  color: var(--ark-text-muted);
  text-decoration: none; transition: color .13s;
  padding: .2rem;
}
.wz-permalink:hover { color: var(--ark-accent); }

/* ════════════════════════════════════════════════════════════
   POJEDYNCZE ZADANIE — /zadanie/{id}
   ════════════════════════════════════════════════════════════ */

.zad-section { max-width: 1600px; }

.zad-layout {
  display: grid;
  grid-template-columns: 1fr 265px;
  gap: 1.5rem;
  align-items: start;
}

.zad-main {}

.zad-breadcrumb {
  display: flex; align-items: center; gap: .5rem;
  font-size: .8rem; color: var(--ark-text-muted); margin-bottom: 1.25rem; flex-wrap: wrap;
}
.zad-breadcrumb a      { color: var(--ark-text-sec); text-decoration: none; transition: color .13s; }
.zad-breadcrumb a:hover { color: var(--ark-accent); }
.zad-bc-sep { color: var(--ark-border); }

.zad-header { margin-bottom: 1rem; }
.zad-number-badge {
  display: inline-block;
  background: linear-gradient(135deg,#0ea5e9,#6366f1);
  color: #fff; padding: .3rem .9rem; border-radius: 8px;
  font-size: .85rem; font-weight: 800; margin-bottom: .65rem;
}
.zad-meta-row {
  display: flex; flex-wrap: wrap; gap: .4rem; align-items: center;
}

.zad-content-box {
  background: var(--ark-card); border: 1px solid var(--ark-border);
  border-radius: 12px; padding: 1.1rem; margin-bottom: 1rem;
  box-shadow: var(--ark-shadow);
}
.zad-content-label { font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--ark-text-muted); margin-bottom: .6rem; }
.zad-content { font-size: .95rem; line-height: 1.85; color: var(--ark-text); }
.zad-content p   { margin: .4rem 0; }
.zad-content img { max-width: 100%; border-radius: 6px; margin: .5rem 0; border: 1px solid var(--ark-border); }

.zad-solution-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 12px; overflow: hidden; margin-bottom: 1rem;
  box-shadow: var(--ark-shadow);
}
.zad-solution-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .6rem 1rem;
  background: #e0f2fe;
  border-bottom: 1px solid #bae6fd;
}
.zad-solution-header span { font-size: .75rem; font-weight: 700; color: #0369a1; text-transform: uppercase; letter-spacing: .06em; }
.zad-sol-toggle {
  font-size: .78rem; color: var(--ark-accent); background: none; border: none; cursor: pointer;
  padding: .2rem .5rem; border-radius: 5px; font-weight: 600; transition: background .13s;
}
.zad-sol-toggle:hover { background: #bae6fd; }
.zad-solution-body { padding: 1rem; font-size: .9rem; line-height: 1.85; color: var(--ark-text); }
.zad-solution-body h4    { font-size: .93rem; color: var(--ark-text); margin: .8rem 0 .3rem; font-weight: 700; }
.zad-solution-body p     { margin: .35rem 0; }
.zad-solution-body ol,
.zad-solution-body ul    { padding-left: 1.4rem; }
.zad-solution-body li    { margin: .28rem 0; }
.zad-solution-body strong { color: var(--ark-text); font-weight: 700; }

.zad-no-solution { text-align: center; padding: 1.1rem; color: var(--ark-text-muted); font-size: .82rem; font-style: italic; }

.zad-nav-tasks {
  display: flex; align-items: center; justify-content: space-between;
  gap: .5rem; margin-top: 1rem;
}
.zad-nav-btn {
  padding: .48rem .9rem; border-radius: 8px;
  text-decoration: none; font-size: .82rem; font-weight: 600;
  border: 1px solid var(--ark-border); color: var(--ark-text-sec);
  background: var(--ark-card);
  transition: all .13s; white-space: nowrap;
  box-shadow: var(--ark-shadow);
}
.zad-nav-btn:hover { background: var(--ark-bg); color: var(--ark-text); }
.zad-nav-exam { background: var(--ark-accent-bg); border-color: #bae6fd; color: var(--ark-accent); }
.zad-nav-exam:hover { background: #e0f2fe; }

/* Sidebar zadania */
.zad-sidebar { display: flex; flex-direction: column; gap: .65rem; position: sticky; top: 75px; max-height: calc(100vh - 90px); overflow-y: auto; }
.zad-sidebar-card { background: var(--ark-card); border: 1px solid var(--ark-border); border-radius: 12px; padding: .85rem 1rem; box-shadow: var(--ark-shadow); }
.zad-sidebar-title { font-size: .65rem; font-weight: 700; text-transform: uppercase; letter-spacing: .09em; color: var(--ark-text-muted); margin-bottom: .55rem; }
.zad-exam-info {}
.zad-exam-name { font-size: .86rem; font-weight: 700; color: var(--ark-text); line-height: 1.3; margin-bottom: .3rem; }
.zad-exam-meta-row { font-size: .78rem; color: var(--ark-text-sec); line-height: 1.55; }
.zad-exam-link { font-size: .8rem; color: var(--ark-accent); text-decoration: none; font-weight: 600; }
.zad-exam-link:hover { text-decoration: underline; }

.zad-cats-list   { display: flex; flex-wrap: wrap; gap: .3rem; }
.zad-formula-item { margin-bottom: .7rem; padding-bottom: .65rem; border-bottom: 1px solid var(--ark-border-soft); }
.zad-formula-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.zad-formula-name  { font-size: .8rem; font-weight: 700; color: var(--ark-text); margin-bottom: .2rem; }
.zad-formula-latex { font-size: .9rem; color: var(--ark-text); overflow-x: auto; }
.zad-formula-desc  { font-size: .75rem; color: var(--ark-text-sec); line-height: 1.5; margin-top: .2rem; }
.zad-formulas-link { display: block; margin-top: .5rem; font-size: .78rem; color: var(--ark-accent); text-decoration: none; }
.zad-formulas-link:hover { text-decoration: underline; }
.zad-no-formulas { font-size: .8rem; color: var(--ark-text-muted); line-height: 1.5; margin: 0 0 .5rem; }

/* ── Podobne zadania (sidebar) ── */
.zad-similar-list { display: flex; flex-direction: column; gap: .4rem; }
.zad-similar-item {
  display: flex; flex-direction: column; gap: .2rem;
  padding: .5rem .6rem;
  border: 1px solid var(--ark-border);
  border-radius: 9px;
  background: var(--ark-card);
  text-decoration: none;
  transition: border-color .13s, background .13s, box-shadow .13s, transform .13s;
}
.zad-similar-item:hover {
  border-color: #bae6fd;
  background: var(--ark-accent-bg);
  box-shadow: 0 3px 10px rgba(24,26,68,.08);
  transform: translateY(-1px);
}
.zad-sim-top { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.zad-sim-num { font-size: .8rem; font-weight: 700; color: var(--ark-accent); }
.zad-sim-meta { font-size: .68rem; color: var(--ark-text-muted); white-space: nowrap; }
.zad-sim-excerpt {
  font-size: .73rem; color: var(--ark-text-sec); line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ── Powiązane definicje (sidebar) ── */
.zad-def-list { display: flex; flex-direction: column; gap: .35rem; }
.zad-def-item {
  display: flex; align-items: center; gap: .5rem;
  padding: .45rem .6rem;
  border: 1px solid var(--ark-border);
  border-radius: 9px;
  background: var(--ark-card);
  text-decoration: none;
  transition: border-color .13s, background .13s, transform .13s;
}
.zad-def-item:hover { border-color: #bae6fd; background: var(--ark-accent-bg); transform: translateY(-1px); }
.zad-def-ico { flex-shrink: 0; font-size: .95rem; }
.zad-def-name { font-size: .8rem; font-weight: 600; color: var(--ark-text-sec); line-height: 1.35; }
.zad-def-item:hover .zad-def-name { color: var(--ark-accent); }

/* ════════════════════════════════════════════════════════════
   OBRAZKI — dopasowanie do kolumny + lupa (hover-zoom) + lightbox
   ════════════════════════════════════════════════════════════ */

/* Każdy obrazek w treści zadania i w rozwiązaniu mieści się w kolumnie */
.ark-task-content img,
.ark-solution-body img,
.zad-content img,
.zad-solution-body img {
  max-width: 100%;
  height: auto;
}

/* Kontener-lupa. Obraz mieści się w kolumnie, a po najechaniu myszką
   powiększa się w miejscu kursora (transform-origin ustawia JS). */
.ark-zoom {
  display: inline-block;
  position: relative;
  overflow: hidden;
  max-width: 100%;
  margin: .6rem auto;
  border: 1px solid var(--ark-border);
  border-radius: 8px;
  background: #fff;
  cursor: zoom-in;
  line-height: 0;
  vertical-align: top;
}
.ark-zoom-img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  transition: transform .2s ease-out;
  will-change: transform;
}
.ark-zoom:hover .ark-zoom-img { transform: scale(2.3); }

/* Podpis zastępczy, gdy plik rysunku jest niedostępny (zamiast ikony zepsutego obrazka) */
.ark-img-missing {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: .6rem 0;
  padding: .55rem .85rem;
  font-size: .82rem;
  font-style: italic;
  color: var(--ark-text-muted);
  background: var(--ark-bg);
  border: 1px dashed var(--ark-border);
  border-radius: 8px;
}

/* Lightbox — pełny podgląd po kliknięciu w obraz */
.ark-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(6, 8, 24, .82);
  backdrop-filter: blur(3px);
  align-items: center;
  justify-content: center;
  padding: 2.5vh 2.5vw;
  cursor: zoom-out;
}
.ark-lightbox.open { display: flex; }
.ark-lb-img {
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .55);
  background: #fff;
}
.ark-lb-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  transition: background .15s;
}
.ark-lb-close:hover { background: rgba(255, 255, 255, .3); }

/* Na ekranach dotykowych bez lupy — samo dopasowanie i podgląd po tapnięciu */
@media (hover: none) {
  .ark-zoom { cursor: pointer; }
  .ark-zoom:hover .ark-zoom-img { transform: none; }
}

/* ════════════════════════════════════════════════════════════
   PRZYCISKI „ODPOWIEDŹ" / „WYJAŚNIENIE" w treści zadań
   (format źródłowy „szalpdf" — osadzony w content_html; nadpisujemy
    style inline: float/margin/width, dlatego z !important)
   ════════════════════════════════════════════════════════════ */
.ark-task-content .szalpdf-slideToggle,
.zad-content .szalpdf-slideToggle,
.ark-solution-body .szalpdf-slideToggle,
.zad-solution-body .szalpdf-slideToggle {
  display: flex !important;
  flex-wrap: wrap;
  gap: .5rem;
  width: auto !important;
  float: none !important;
  margin: .85rem 0 .4rem !important;
}
.ark-task-content .szalpdf-standard-button,
.zad-content .szalpdf-standard-button,
.ark-solution-body .szalpdf-standard-button,
.zad-solution-body .szalpdf-standard-button {
  float: none !important;
  margin: 0 !important;
}
.ark-task-content .szalpdf-standard-button a,
.zad-content .szalpdf-standard-button a,
.ark-solution-body .szalpdf-standard-button a,
.zad-solution-body .szalpdf-standard-button a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.05rem;
  border-radius: 9px;
  font-size: .85rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 1.5px solid #bae6fd;
  background: var(--ark-accent-bg);
  color: var(--ark-accent);
  transition: background .14s, color .14s, border-color .14s, box-shadow .14s, transform .14s;
}
.ark-task-content .szalpdf-standard-button a:hover,
.zad-content .szalpdf-standard-button a:hover,
.ark-solution-body .szalpdf-standard-button a:hover,
.zad-solution-body .szalpdf-standard-button a:hover {
  background: var(--ark-accent);
  color: #fff;
  border-color: var(--ark-accent);
  box-shadow: 0 4px 12px rgba(79, 70, 229, .28);
  transform: translateY(-1px);
}
/* Przycisk aktywny (panel rozwinięty) */
.szalpdf-standard-button a.is-active {
  background: var(--ark-accent) !important;
  color: #fff !important;
  border-color: var(--ark-accent) !important;
}
/* Ikonki rozróżniające oba przyciski (kolejność: Odpowiedź, Wyjaśnienie) */
.ark-task-content .szalpdf-standard-button:first-child a::before,
.zad-content .szalpdf-standard-button:first-child a::before,
.ark-solution-body .szalpdf-standard-button:first-child a::before,
.zad-solution-body .szalpdf-standard-button:first-child a::before { content: "\2713"; font-weight: 800; }
.ark-task-content .szalpdf-standard-button:nth-child(2) a::before,
.zad-content .szalpdf-standard-button:nth-child(2) a::before,
.ark-solution-body .szalpdf-standard-button:nth-child(2) a::before,
.zad-solution-body .szalpdf-standard-button:nth-child(2) a::before { content: "\1F4A1"; }

/* ════════════════════════════════════════════════════════════
   RESPONSYWNOŚĆ
   ════════════════════════════════════════════════════════════ */

@media (max-width: 960px) {
  .ark-page-layout { grid-template-columns: 1fr; }
  .ark-sb-toggle   { display: flex; }
  .ark-sb-close    { display: block; }
  .ark-subj-tiles  { grid-template-columns: 1fr; gap: 1rem; }

  .ark-list-sidebar {
    position: fixed;
    top: 0; left: 0;
    width: min(300px, 88vw);
    height: 100vh;
    max-height: 100vh;
    border-radius: 0 14px 14px 0;
    transform: translateX(-105%);
    transition: transform .25s ease;
    z-index: 50;
    box-shadow: 4px 0 24px rgba(0,0,0,.4);
  }
  .ark-list-sidebar.open { transform: translateX(0); }

  .ark-exam-layout { grid-template-columns: 1fr; }
  .ark-exam-sidebar { position: static; flex-direction: row; flex-wrap: wrap; max-height: none; }
  .ark-esb-card { flex: 1; min-width: 200px; }

  .ark-task-body-inner.has-panel { grid-template-columns: 1fr; }
  .ark-task-panel { position: static; }

  .zad-layout { grid-template-columns: 1fr; }
  .zad-sidebar { position: static; max-height: none; flex-direction: row; flex-wrap: wrap; }
  .zad-sidebar-card { flex: 1; min-width: 220px; }

  .wz-layout { grid-template-columns: 1fr; }
  .wz-sidebar { position: static; max-height: none; }
  .wz-hero { padding: 2.25rem 1.25rem 2rem; border-radius: 16px; }
  .wz-subj-nav { gap: .4rem; }
  .wz-sn-item { padding: .42rem .85rem; font-size: .8rem; }
}

@media (max-width: 700px) {
  .ark-subj-tiles { grid-template-columns: 1fr; }
  .ark-stile-top  { padding: 1.25rem 1.25rem .85rem; }
  .ark-stile-links { padding: 0 1.25rem .85rem; }
  .ark-stile-btn  { margin: 0 1.25rem 1.25rem; }
}

@media (max-width: 600px) {
  .ark-exam-sidebar { display: none; }
  .ark-exam-head-mobile { display: block; background: var(--ark-card); border: 1px solid var(--ark-border); border-radius: 12px; padding: .8rem 1rem; margin-bottom: 1rem; box-shadow: var(--ark-shadow); }
  .ark-exam-title-desktop { display: none; }

  .ark-options { grid-template-columns: 1fr; }
  .ark-grid { grid-template-columns: 1fr; }
  .ark-card-stats { gap: .5rem; }
  .ark-hero { padding: 2rem .75rem 1.75rem; border-radius: 14px; }
  .ark-hero h1 { font-size: 1.4rem; }

  .wz-formulas-grid { grid-template-columns: 1fr; }
  .wz-card-hdr { min-height: 50px; }
  .wz-formula-box { padding: .7rem .5rem; }
  .wz-hero { padding: 1.75rem 1rem 1.5rem; border-radius: 14px; }
  .wz-hero-title { font-size: 1.45rem; }
  .wz-hero-sub { font-size: .88rem; }
  .wz-subj-nav { gap: .35rem; }
  .wz-sn-item { padding: .38rem .75rem; font-size: .78rem; }
  .wz-sn-icon { width: 16px; height: 16px; }
  .wz-sn-label { font-size: .78rem; }

  .zad-layout { grid-template-columns: 1fr; }
  .zad-sidebar { display: none; }
}