*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root{
  --bg:#0A0E17;
  --panel:#041228;
  --card-1:#141C2E;
  --card-2:#11203D;
  --border:#23304A;
  --border-hover:#3257A8;
  --blue:#3B82F6;
  --blue-bright:#60A5FA;
  --coral:#EC5C4C;
  --orange:#FC6924;
  --slate:#8893A8;
  --white:#FFFFFF;
  --green:#34D399;
  --red:#F87171;
  --wb-scale: 1;
  --gradient-bar: linear-gradient(90deg, var(--coral) 0%, var(--orange) 45%, var(--blue) 100%);
  --gradient-text: linear-gradient(120deg, var(--coral) 0%, var(--blue-bright) 100%);
  --gradient-cta: linear-gradient(135deg, var(--coral) 0%, var(--orange) 100%);
}

html.hc-mode{
  --bg:#000000;
  --panel:#000000;
  --card-1:#000000;
  --card-2:#000000;
  --border:#FFFFFF;
  --border-hover:#FFFFFF;
  --slate:#F2F2F2;
  --white:#FFFFFF;
  --coral:#FF8A75;
  --orange:#FFC777;
  --blue-bright:#9FD8FF;
  --green:#6CF0C2;
  --red:#FFA3A3;
}
html.hc-mode .wb-adjust,
html.hc-mode .lesson-card,
html.hc-mode .quiz-option,
html.hc-mode .locked-card,
html.hc-mode footer,
html.hc-mode header#navbar.scrolled,
html.hc-mode .worked-box,
html.hc-mode .sources-box,
html.hc-mode .ex-check-row,
html.hc-mode .lang-dd-trigger,
html.hc-mode .lang-dd-menu{ border-width: 2px; }

html{ scroll-behavior: smooth; font-size: calc(100% * var(--wb-scale)); }

body{
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--white);
  overflow-x: hidden;
  line-height: 1.5;
}

img{ max-width: 100%; display:block; }
a{ color: inherit; }

::-webkit-scrollbar{ width: 8px; }
::-webkit-scrollbar-track{ background: var(--bg); }
::-webkit-scrollbar-thumb{ background: var(--border-hover); border-radius: 4px; }

:focus-visible{
  outline: 2px solid var(--blue-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

.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;
}

.skip-link{
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 999;
  background: var(--coral);
  color: var(--white);
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus{ top: 16px; }

.icon{ stroke: currentColor; }
.icon path, .icon circle, .icon line, .icon rect, .icon polyline{ vector-effect: non-scaling-stroke; }

/* ── WORDMARK ── */
.wordmark{
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  color: var(--white);
  display: inline-flex;
  align-items: baseline;
  text-decoration: none;
}
.wordmark .i-dot{ position: relative; display: inline-block; }
.wordmark .i-dot i{
  position: absolute;
  display: block;
  width: 0.16em;
  height: 0.16em;
  border-radius: 50%;
  background: var(--coral);
  top: -0.08em;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(236,92,76,0.7);
  font-style: normal;
}

/* ── GRADIENT BAR ── */
.gradient-bar{
  height: 3px;
  width: 64px;
  background: var(--gradient-bar);
  border-radius: 3px;
  margin: 0 auto 20px;
}

/* ── NAV ── */
header#navbar{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 22px 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,14,23,0.6);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, padding .3s ease, border-color .3s ease;
}
header#navbar.scrolled{
  background: rgba(10,14,23,0.92);
  padding: 14px 6%;
  border-bottom-color: var(--border);
}

.nav-links{ display: flex; gap: 22px; list-style: none; }
.nav-links a{
  position: relative;
  color: var(--slate);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: color .25s ease;
  white-space: nowrap;
}
.nav-links a:hover{ color: var(--white); }
.nav-links a.nav-active{ color: var(--white); font-weight: 700; }
.nav-links a.nav-active::after{
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 2px;
  background: var(--coral);
}

.nav-right{ display: flex; align-items: center; gap: 16px; }

/* ── LANGUAGE SWITCHER ── */
.lang-switch{
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 4px;
}
.lang-switch .lang-globe{ color: var(--slate); margin-left: 6px; margin-right: 2px; flex-shrink: 0; }
.lang-pill{
  appearance: none;
  border: none;
  background: transparent;
  color: var(--slate);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 6px 11px;
  border-radius: 50px;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.lang-pill:hover{ color: var(--white); }
.lang-pill.active{ background: var(--gradient-cta); color: var(--white); }

.mobile-panel .lang-switch{ margin-bottom: 6px; padding: 5px; align-self: flex-start; }
.mobile-panel .lang-pill{ font-size: 0.82rem; padding: 8px 14px; }

/* ── LANGUAGE DROPDOWN (7 languages, shown by native name) ── */
.lang-dd{ position: relative; }
.lang-dd-trigger{
  appearance: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 9px 14px;
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  transition: border-color .2s ease, background .2s ease;
}
.lang-dd-trigger:hover{ border-color: var(--coral); background: rgba(236,92,76,0.08); }
.lang-dd-trigger .lang-globe{ color: var(--slate); flex-shrink: 0; }
.lang-dd-trigger .lang-dd-caret{ color: var(--slate); flex-shrink: 0; transition: transform .2s ease; }
.lang-dd-trigger[aria-expanded="true"] .lang-dd-caret{ transform: rotate(180deg); }
.lang-dd-current{ white-space: nowrap; }

.lang-dd-menu{
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 300;
  min-width: 168px;
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}
/* The display above outranks the UA [hidden]{display:none} rule, so without this
   the closed menu never collapsed and all 7 languages painted over the page. */
.lang-dd-menu[hidden]{ display: none; }
.lang-dd-item{
  all: unset;
  box-sizing: border-box;
  display: block;
  width: 100%;
  cursor: pointer;
  padding: 10px 14px;
  border-radius: 10px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: #E4E8F0;
  transition: background .15s ease, color .15s ease;
}
.lang-dd-item:hover{ background: rgba(59,130,246,0.1); }
.lang-dd-item.active,
.lang-dd-item[aria-selected="true"]{ background: var(--gradient-cta); color: var(--white); font-weight: 700; }

.mobile-panel .lang-dd{ align-self: flex-start; margin-bottom: 4px; }
.mobile-panel .lang-dd-menu{ right: auto; left: 0; }

@media (max-width: 1250px){
  .nav-links{ gap: 14px; }
}

.btn-cta{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-cta);
  color: var(--white);
  padding: 11px 24px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease;
  white-space: nowrap;
}
.btn-cta:hover{ transform: translateY(-2px); box-shadow: 0 10px 30px rgba(236,92,76,0.35); }
.btn-cta:active{ transform: translateY(0) scale(0.97); }

.hamburger{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  padding: 0;
}
.hamburger span{
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.mobile-panel{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 250;
  background: rgba(10,14,23,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 90px 8% 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform .35s ease, opacity .35s ease;
}
.mobile-panel.open{
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-panel a{
  position: relative;
  color: var(--white);
  text-decoration: none;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 1.15rem;
}
.mobile-panel a.nav-active{ align-self: flex-start; font-weight: 800; }
.mobile-panel a.nav-active::after{
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -6px;
  height: 2px;
  border-radius: 2px;
  background: var(--coral);
}
.mobile-panel .btn-cta{ align-self: flex-start; margin-top: 8px; }

@media (max-width: 980px){
  .nav-links{ display: none; }
  .nav-right .btn-cta{ display: none; }
  .nav-right .lang-switch{ display: none; }
  .nav-right .lang-dd{ display: none; }
  .hamburger{ display: flex; }
}

/* ── ADJUST PANEL ── */
.wb-adjust-wrap{ padding: 122px 6% 0; position: relative; z-index: 1; }
.wb-adjust{
  max-width: 900px;
  margin: 0 auto;
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
}
.wb-adjust-group{ display: flex; align-items: center; gap: 10px; }
.wb-adjust-label{ font-size: 0.82rem; font-weight: 700; color: var(--slate); }
.wb-adjust-btn{
  appearance: none;
  cursor: pointer;
  width: 34px; height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--white);
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  transition: border-color .2s ease, background .2s ease;
}
.wb-adjust-btn:hover{ border-color: var(--coral); background: rgba(236,92,76,0.1); }
.wb-adjust-toggle{
  appearance: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  transition: border-color .2s ease, background .2s ease, color .2s ease;
}
.wb-adjust-toggle:hover{ border-color: var(--coral); }
.wb-adjust-toggle[aria-pressed="true"]{
  background: var(--gradient-cta);
  border-color: transparent;
  color: var(--white);
}
.wb-adjust-toggle[hidden]{ display: none; }

/* ── PROGRESS BAR ── */
.wb-progress-wrap{ max-width: 900px; margin: 18px auto 0; padding: 0 6%; }
.wb-progress-track{
  height: 8px;
  border-radius: 4px;
  background: var(--card-1);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 8px;
}
.wb-progress-fill{
  height: 100%;
  background: var(--gradient-cta);
  border-radius: 4px;
  width: 0%;
  transition: width .5s cubic-bezier(.16,1,.3,1);
}
.wb-progress-label{ font-size: 0.82rem; color: var(--slate); font-weight: 700; }

/* ── LESSON LAYOUT ── */
.lesson-wrap{ max-width: 720px; margin: 0 auto; padding: 36px 6% 100px; }
.lesson-back{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--slate);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 20px;
  transition: color .2s ease;
}
.lesson-back:hover{ color: var(--white); }
.lesson-eyebrow{
  display: inline-block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--blue-bright);
  font-weight: 700;
  margin-bottom: 14px;
}
.lesson-title{
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}
.lesson-card{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 26px;
  margin-bottom: 24px;
}
.lesson-card h2{
  font-family: 'Poppins', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.lesson-text{ font-size: 1.02rem; line-height: 1.85; color: #E4E8F0; }
.lesson-text p{ margin-bottom: 14px; }
.lesson-text p:last-child{ margin-bottom: 0; }
.lesson-section{ margin-bottom: 28px; }
.lesson-section:last-child{ margin-bottom: 0; }
.lesson-subhead{
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}

/* ── WHOLE-PAGE READ-ALOUD ── */
.wb-sentence{ position: relative; }

/* The sentence being read. Background AND a left border, never colour alone, so
   the cue survives high-contrast mode, greyscale and colour-blind vision. */
.wb-tts-active{
  background: rgba(59,130,246,0.14);
  border-left: 3px solid var(--blue-bright);
  padding-left: 7px;
  margin-left: -10px;
  border-radius: 3px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
html.hc-mode .wb-tts-active{
  background: rgba(255,255,255,0.22);
  border-left-width: 5px;
}

.wb-tts-group{ display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.wb-tts-group[hidden]{ display: none; }

.wb-adjust-toggle.is-playing{ border-color: var(--coral); color: var(--coral); }
.wb-adjust-toggle.is-loading{ animation: wbTtsPulse 1s ease-in-out infinite; }

.wb-tts-progress{
  width: 84px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
}
.wb-tts-progress[hidden]{ display: none; }
.wb-tts-progress-fill{
  display: block;
  height: 100%;
  width: 0%;
  background: var(--gradient-cta);
  transition: width .3s ease;
}

.wb-tts-note{
  margin: 6px 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--slate);
}
.wb-tts-note[hidden]{ display: none; }

@keyframes wbTtsPulse{
  0%, 100%{ opacity: 1; }
  50%{ opacity: 0.35; }
}

/* Reduced motion: no pulsing, no animated progress. The auto-scroll is switched
   to an instant jump in JS for the same reason. */
@media (prefers-reduced-motion: reduce){
  .wb-adjust-toggle.is-loading{ animation: none; }
  .wb-tts-progress-fill{ transition: none; }
}

/* ── LOCKED NOTICE ── */
.locked-card{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  max-width: 560px;
  margin: 40px auto 0;
}
.locked-icon{
  width: 56px; height: 56px;
  border-radius: 16px;
  background: rgba(236,92,76,0.12);
  border: 1px solid rgba(236,92,76,0.3);
  color: var(--coral);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
}
.locked-title{ font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.15rem; margin-bottom: 10px; }
.locked-text{ font-size: 0.94rem; color: var(--slate); line-height: 1.7; margin-bottom: 22px; }

/* ── BUTTONS ── */
.btn-primary{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gradient-cta);
  color: var(--white);
  padding: 15px 30px;
  border-radius: 50px;
  font-size: 0.96rem;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 40px rgba(236,92,76,0.3);
  transition: transform .25s ease, box-shadow .25s ease, opacity .25s ease;
}
.btn-primary:hover{ transform: translateY(-3px); box-shadow: 0 16px 50px rgba(236,92,76,0.45); }
.btn-primary:active{ transform: translateY(-1px) scale(0.97); }
.btn-primary[disabled]{ opacity: 0.4; pointer-events: none; box-shadow: none; }

.btn-outline{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  padding: 13px 26px;
  border-radius: 50px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.btn-outline:hover{ border-color: var(--border-hover); background: rgba(59,130,246,0.06); transform: translateY(-2px); }

/* ── QUIZ ── */
.quiz-question{ margin-bottom: 30px; }
.quiz-question:last-child{ margin-bottom: 0; }
.quiz-question-title{ font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.02rem; margin-bottom: 16px; }
.quiz-options{ display: flex; flex-direction: column; gap: 10px; }
.quiz-option{
  all: unset;
  box-sizing: border-box;
  display: block;
  cursor: pointer;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 0.92rem;
  color: #E4E8F0;
  transition: border-color .2s ease, background .2s ease;
}
.quiz-option:hover{ border-color: var(--border-hover); background: rgba(59,130,246,0.05); }
.quiz-option[disabled]{ cursor: default; }
.quiz-option.correct{ border-color: var(--green); background: rgba(52,211,153,0.1); }
.quiz-option.incorrect{ border-color: var(--red); background: rgba(248,113,113,0.1); }
.quiz-why{ font-size: 0.86rem; color: var(--slate); margin-top: 10px; line-height: 1.6; }
.quiz-why.correct{ color: var(--green); }
.quiz-why.incorrect{ color: var(--red); }
.quiz-result{
  margin-top: 28px;
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  text-align: center;
}
.quiz-result-score{ font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 1.3rem; margin-bottom: 6px; }
.quiz-result-msg{ font-size: 0.9rem; color: var(--slate); margin-bottom: 16px; }

/* ── WORKED EXAMPLE ── */
.worked-box{
  background: var(--card-2);
  border: 1px solid var(--border-hover);
  border-left: 4px solid var(--blue-bright);
  border-radius: 16px;
  padding: 24px 26px;
  margin-bottom: 24px;
}
.worked-box h2{
  font-family: 'Poppins', sans-serif;
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--blue-bright);
}
.worked-box .lesson-text{ font-size: 0.98rem; }
.worked-box .lesson-text strong{ color: var(--white); }

/* ── PRACTICE EXERCISES (Part C) ── */
.ex-item{
  display: flex;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.ex-item:first-child{ padding-top: 4px; }
.ex-item:last-child{ border-bottom: none; padding-bottom: 4px; }
.ex-num{
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--blue-bright);
}
.ex-body{ flex: 1; min-width: 0; }
.ex-title{ font-weight: 700; font-size: 0.98rem; margin-bottom: 6px; }
.ex-hint{ font-size: 0.84rem; color: var(--slate); margin-bottom: 12px; }
.ex-body .quiz-options{ margin-top: 4px; }

.tf-options{ flex-direction: row; flex-wrap: wrap; }
.tf-option{ min-width: 120px; text-align: center; }

.ex-multiselect{ border: none; display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.ex-check-row{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.9rem;
  cursor: pointer;
}
.ex-check-row:hover{ border-color: var(--border-hover); }
.ex-check-row input{ width: 17px; height: 17px; accent-color: var(--coral); flex-shrink: 0; }

.ex-reveal-btn{ padding: 11px 22px; font-size: 0.86rem; }

.ex-classify-list{ display: flex; flex-direction: column; gap: 14px; }
.ex-classify-row{ display: flex; flex-direction: column; gap: 8px; }
.ex-classify-text{ font-size: 0.94rem; color: #E4E8F0; font-style: italic; }
.ex-classify-btns{ display: flex; gap: 10px; flex-wrap: wrap; }
.ex-classify-btn{ padding: 10px 18px; font-size: 0.86rem; }

.ex-text-input{
  width: 100%;
  max-width: 480px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.94rem;
  margin-bottom: 12px;
  display: block;
}
.ex-text-input:focus-visible{ border-color: var(--blue-bright); }

/* ── SOURCES BOX ── */
.sources-box{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 26px;
  margin-bottom: 24px;
}
.sources-box h2{
  font-family: 'Poppins', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.sources-list{ list-style: none; display: flex; flex-direction: column; gap: 10px; }
.sources-list li{
  font-size: 0.88rem;
  color: var(--slate);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}
.sources-list li::before{
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--coral);
}
.source-note{
  font-size: 0.82rem;
  color: var(--slate);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  line-height: 1.6;
}

/* ── FREE-WRITE / FIX-IT ── */
.wb-textarea{
  width: 100%;
  min-height: 140px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.96rem;
  line-height: 1.7;
  resize: vertical;
}
.wb-textarea:focus-visible{ border-color: var(--blue-bright); }
.wb-textarea[readonly]{ color: var(--slate); }
.wb-field-label{ display: block; font-size: 0.82rem; font-weight: 700; color: var(--slate); margin-bottom: 8px; }
.wb-compare{ display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 18px; }
.wb-compare-col h3{ font-family: 'Poppins', sans-serif; font-size: 0.86rem; font-weight: 700; margin-bottom: 8px; color: var(--slate); }
.wb-fixed-box{
  background: var(--panel);
  border: 1px solid rgba(52,211,153,0.35);
  border-radius: 14px;
  padding: 16px;
  font-size: 0.96rem;
  line-height: 1.7;
  min-height: 140px;
  white-space: pre-wrap;
}
.wb-inline-error{
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(248,113,113,0.35);
  background: rgba(248,113,113,0.08);
  color: #FFB4B4;
  font-size: 0.86rem;
}
.wb-inline-error[hidden]{ display: none; }
.wb-spinner{
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: wbSpin .7s linear infinite;
}

/* ── GRADE RESULT (final task) ── */
.grade-result{
  margin-top: 20px;
  padding: 22px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
}
.grade-result.pass{ border-color: rgba(52,211,153,0.4); }
.grade-result.fail{ border-color: rgba(248,113,113,0.4); }
.grade-result-title{ font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 1.1rem; margin-bottom: 10px; }
.grade-result.pass .grade-result-title{ color: var(--green); }
.grade-result.fail .grade-result-title{ color: var(--red); }
.grade-result-list{ display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.grade-result-item{ font-size: 0.9rem; color: #E4E8F0; line-height: 1.6; }

@keyframes wbSpin{ to{ transform: rotate(360deg); } }

/* ── REVEAL ── */
.reveal{ opacity: 0; transform: translateY(24px); transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1); }
.reveal.visible{ opacity: 1; transform: translateY(0); }

/* ── FOOTER ── */
footer{
  border-top: 1px solid var(--border);
  padding: 44px 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-left{ display: flex; flex-direction: column; gap: 8px; }
.footer-text{ font-size: 0.82rem; color: var(--slate); }
.footer-links{ display: flex; align-items: center; gap: 24px; }
.footer-links a{ color: var(--slate); text-decoration: none; font-size: 0.85rem; transition: color .25s ease; }
.footer-links a:hover{ color: var(--white); }
.footer-social{ display: flex; gap: 14px; }
.footer-social a{
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--slate);
  transition: color .25s ease, border-color .25s ease;
}
.footer-social a:hover{ color: var(--coral); border-color: var(--coral); }

@media (max-width: 768px){
  .wb-adjust-wrap{ padding: 112px 5% 0; }
  .wb-adjust{ padding: 14px 18px; gap: 16px; }
  .wb-progress-wrap{ padding: 0 5%; }
  .lesson-wrap{ padding: 30px 5% 80px; }
  .lesson-card{ padding: 24px 20px; }
  .wb-compare{ grid-template-columns: 1fr; }
  .ex-item{ gap: 12px; }
  .worked-box, .sources-box{ padding: 22px 20px; }
  footer{ flex-direction: column; text-align: center; }
  .footer-left{ align-items: center; }
  .footer-links{ flex-wrap: wrap; justify-content: center; }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal{ opacity: 1 !important; transform: none !important; }
}

/* ══════════════════════════════════════════════════════════════════════════
   FULL-WIDTH LESSON LAYOUT + VISUAL SECTION SYSTEM
   Built by enhanceLessonLayout() in module1.js, so every lesson page in every
   module gets the same structure without per-page markup.
   Colour tokens and fonts are the existing ones; nothing new is introduced.
   ══════════════════════════════════════════════════════════════════════════ */

:root{
  --wb-measure: 76ch;      /* ~68-75 characters per line in the reading column */
  --wb-sidebar-w: 260px;
  --wb-rail-w: 280px;
  --wb-gutter: 32px;
  --wb-read-size: 1.1875rem;   /* 19px */
  --wb-read-leading: 1.7;
}

/* ── the three-part shell ── */
.wb-shell{
  display: grid;
  grid-template-columns: var(--wb-sidebar-w) minmax(0, 1fr) var(--wb-rail-w);
  gap: var(--wb-gutter);
  align-items: start;
  width: 100%;
  max-width: 1760px;
  margin: 0 auto;
  padding: 28px clamp(20px, 3vw, 48px) 110px;
}
.wb-main{ min-width: 0; }

/* the reading column keeps a comfortable measure inside a full-width page */
.wb-lesson-page .lesson-wrap{
  max-width: var(--wb-measure);
  margin: 0;
  padding: 0;
}
.wb-lesson-page .lesson-text{
  font-size: var(--wb-read-size);
  line-height: var(--wb-read-leading);
}
.wb-lesson-page .lesson-text p{ margin-bottom: 1.15em; }
.wb-lesson-page .lesson-title{ margin-bottom: 28px; }
.wb-lesson-page .lesson-section{ margin-bottom: 40px; }
.wb-lesson-page .lesson-subhead{ font-size: 1.12rem; margin-bottom: 12px; }
.wb-lesson-page .wb-progress-legacy{ display: none; }

/* ── left sidebar: lessons in this module ── */
.wb-sidebar{
  position: sticky;
  top: 96px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.wb-sidebar-inner{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 16px;
}
.wb-sidebar-title{
  font-family: 'Poppins', sans-serif;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--slate);
  margin-bottom: 14px;
  padding: 0 8px;
}
.wb-lesson-list{ list-style: none; display: flex; flex-direction: column; gap: 4px; }
.wb-lesson-link{
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 11px 10px;
  min-height: 48px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--slate);
  border: 1px solid transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.wb-lesson-link:hover{ background: rgba(59,130,246,0.10); color: var(--white); }
.wb-lesson-icon{ flex-shrink: 0; display: flex; margin-top: 1px; color: var(--slate); }
.wb-lesson-text{ display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.wb-lesson-kicker{
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--slate);
}
.wb-lesson-name{ font-size: 0.9rem; font-weight: 600; line-height: 1.35; }
.wb-lesson-link.is-done .wb-lesson-icon{ color: var(--green); }
.wb-lesson-link.is-current{
  background: rgba(236,92,76,0.12);
  border-color: var(--coral);
  color: var(--white);
}
.wb-lesson-link.is-current .wb-lesson-icon,
.wb-lesson-link.is-current .wb-lesson-kicker{ color: var(--coral); }

/* ── right rail: reading tools ── */
.wb-rail{
  position: sticky;
  top: 96px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.wb-rail-inner{ display: flex; flex-direction: column; gap: 16px; }
.wb-rail .wb-adjust-wrap{ margin: 0; padding: 0; }
.wb-rail .wb-adjust{
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  width: 100%;
  margin: 0;
}
.wb-rail .wb-adjust-group{ width: 100%; justify-content: flex-start; }
.wb-rail .wb-adjust-toggle,
.wb-rail .wb-adjust-btn{ min-height: 44px; }
.wb-rail-lang{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
}
.wb-rail-lang .lang-dd{ width: 100%; }
.wb-rail-lang .lang-dd-trigger{ width: 100%; justify-content: space-between; min-height: 44px; }
.wb-rail-lang .lang-dd-menu{ right: 0; left: 0; width: auto; }

/* ── visual step indicator (replaces the plain text progress line) ── */
.wb-steps{
  background: var(--card-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.wb-step{
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 7px 4px;
  min-height: 44px;
  text-decoration: none;
  color: var(--slate);
  border-radius: 10px;
}
.wb-step:hover{ color: var(--white); }
.wb-step-dot{
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--slate);
  background: var(--bg);
}
.wb-step-dot svg{ width: 15px; height: 15px; }
.wb-step-label{ font-size: 0.82rem; font-weight: 600; }
.wb-step-bar{
  width: 2px;
  height: 12px;
  margin-left: 17px;
  background: var(--border);
  display: block;
}
.wb-step.is-done .wb-step-dot{ border-color: var(--green); color: var(--green); }
.wb-step.is-current .wb-step-dot{
  border-color: var(--coral);
  background: var(--coral);
  color: var(--white);
}
.wb-step.is-current .wb-step-label{ color: var(--white); font-weight: 700; }

/* ── section cards: icon + label + heading, one visual language everywhere ── */
.wb-lesson-page .wb-section{
  padding: 30px 30px 32px;
  margin-bottom: 30px;
  border-radius: 20px;
}
.wb-section-head{
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.wb-section-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(59,130,246,0.14);
  color: var(--blue-bright);
  flex-shrink: 0;
}
.wb-section-label{
  font-family: 'Poppins', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--slate);
}
[data-wb-section="worked"] .wb-section-icon{ background: rgba(236,92,76,0.16); color: var(--coral); }
[data-wb-section="check"] .wb-section-icon{ background: rgba(52,211,153,0.14); color: var(--green); }
[data-wb-section="sources"] .wb-section-icon{ background: rgba(136,147,168,0.16); color: var(--slate); }
[data-wb-section="task"] .wb-section-icon,
[data-wb-section="step"] .wb-section-icon{ background: rgba(236,92,76,0.16); color: var(--coral); }

/* ── key-idea callout ── */
.wb-callout{
  position: relative;
  background: rgba(59,130,246,0.07);
  border: 1px solid rgba(59,130,246,0.32);
  border-left: 4px solid var(--blue-bright);
  border-radius: 14px;
  padding: 18px 20px;
}
.wb-callout-head{ display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.wb-callout-icon{ display: inline-flex; color: var(--blue-bright); }
.wb-callout-tag{
  font-family: 'Poppins', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--blue-bright);
}

/* ── worked example as a side-by-side comparison ── */
.wb-compare{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 4px 0 6px;
}
.wb-compare.wb-compare-three{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.wb-compare-card{
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.wb-compare-card.is-weak{
  background: rgba(136,147,168,0.07);
  border-color: var(--border);
  border-top: 3px solid var(--slate);
}
.wb-compare-card.is-strong{
  background: rgba(236,92,76,0.08);
  border-color: rgba(236,92,76,0.45);
  border-top: 3px solid var(--coral);
}
.wb-compare-head{ display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.wb-compare-mark{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex-shrink: 0;
}
.wb-compare-mark svg{ width: 14px; height: 14px; }
.is-weak .wb-compare-mark{ background: rgba(136,147,168,0.22); color: var(--slate); }
.is-strong .wb-compare-mark{ background: rgba(236,92,76,0.22); color: var(--coral); }
.wb-compare-title{
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
}
.wb-compare-badge{
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid currentColor;
}
.is-weak .wb-compare-badge{ color: var(--slate); }
.is-strong .wb-compare-badge{ color: var(--coral); }
.wb-compare-body{ font-size: 1.02rem; line-height: 1.65; color: #E4E8F0; }
.wb-compare-body p{ margin: 0; }
.wb-compare-takeaway{ margin-top: 14px; }

/* ── exercise feedback: colour AND shape AND icon, never colour alone ── */
.quiz-why{
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 4px solid var(--border);
  border-radius: 12px;
  padding: 13px 15px;
  background: rgba(255,255,255,0.03);
}
.quiz-why-head{ display: flex; align-items: center; gap: 8px; }
.quiz-why-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  flex-shrink: 0;
}
.quiz-why-icon svg{ width: 14px; height: 14px; }
.quiz-why-verdict{
  font-family: 'Poppins', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}
.quiz-why-text{ font-size: 0.98rem; line-height: 1.6; }
.quiz-why.correct{
  border-left-color: var(--green);
  background: rgba(52,211,153,0.09);
}
.quiz-why.correct .quiz-why-icon{ background: rgba(52,211,153,0.2); color: var(--green); }
.quiz-why.correct .quiz-why-verdict{ color: var(--green); }
.quiz-why.incorrect{
  border-left-color: var(--red);
  background: rgba(248,113,113,0.09);
}
.quiz-why.incorrect .quiz-why-icon{ background: rgba(248,113,113,0.2); color: var(--red); }
.quiz-why.incorrect .quiz-why-verdict{ color: var(--red); }
.quiz-why.note{
  flex-direction: row;
  align-items: flex-start;
  border-left-color: var(--blue-bright);
  background: rgba(59,130,246,0.09);
}
.quiz-why.note .quiz-why-icon{ background: rgba(59,130,246,0.2); color: var(--blue-bright); }

.quiz-option{ position: relative; }
.quiz-option-mark{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  margin-left: 10px;
  vertical-align: middle;
  flex-shrink: 0;
}
.quiz-option-mark svg{ width: 13px; height: 13px; }
.quiz-option.correct .quiz-option-mark{ background: rgba(52,211,153,0.22); color: var(--green); }
.quiz-option.incorrect .quiz-option-mark{ background: rgba(248,113,113,0.22); color: var(--red); }
.quiz-option.correct{ border-left: 4px solid var(--green); }
.quiz-option.incorrect{ border-left: 4px solid var(--red); }

/* ── language switcher: busy + error states ── */
.lang-dd.loading .lang-dd-trigger{ opacity: 0.65; cursor: progress; }
.lang-dd-error{
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  margin-top: 6px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--white);
}
.lang-dd-retry{
  all: unset;
  align-self: flex-start;
  cursor: pointer;
  padding: 8px 14px;
  min-height: 40px;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--coral);
  color: var(--coral);
  font-weight: 700;
  font-size: 0.8rem;
}
.lang-dd-retry:hover{ background: rgba(236,92,76,0.14); }

/* ── mobile control bar (hidden on desktop) ── */
.wb-mobile-bar{ display: none; }
.wb-mobile-btn{
  all: unset;
  box-sizing: border-box;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card-1);
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
}
.wb-mobile-btn:hover{ border-color: var(--border-hover); }

/* ══ TABLET: rail becomes a top bar, sidebar becomes a drawer ══ */
@media (max-width: 1023px){
  .wb-shell{
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 20px clamp(16px, 3vw, 32px) 90px;
  }
  .wb-mobile-bar{
    display: flex;
    gap: 10px;
    padding: 12px clamp(16px, 3vw, 32px) 0;
    max-width: 1760px;
    margin: 0 auto;
    width: 100%;
  }
  .wb-sidebar{
    position: static;
    max-height: none;
    order: -2;
    display: none;
  }
  .wb-sidebar.is-open{ display: block; }
  .wb-rail{
    position: sticky;
    top: 74px;
    z-index: 40;
    max-height: none;
    order: -1;
  }
  .wb-rail-inner{
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    background: var(--card-1);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
  }
  .wb-rail .wb-adjust{ flex-direction: row; width: auto; }
  .wb-rail-lang{ border: none; padding: 0; background: transparent; }
  .wb-rail-lang .lang-dd-trigger{ width: auto; }
  .wb-rail-lang .lang-dd-menu{ left: auto; right: 0; width: max-content; }
  .wb-steps{
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    padding: 10px 12px;
  }
  .wb-step-bar{ width: 16px; height: 2px; margin: 0; }
  .wb-lesson-page .lesson-wrap{ max-width: var(--wb-measure); margin: 0 auto; }
}

/* ══ MOBILE: one column, bigger targets, no horizontal scroll ══ */
@media (max-width: 639px){
  :root{ --wb-read-size: 1.125rem; }
  .wb-shell{ padding: 14px 16px 80px; gap: 16px; }
  .wb-mobile-bar{ padding: 10px 16px 0; }
  .wb-mobile-btn{ flex: 1 1 auto; justify-content: center; }
  .wb-lesson-page .wb-section{ padding: 22px 18px 24px; margin-bottom: 22px; border-radius: 16px; }
  .wb-lesson-page .lesson-section{ margin-bottom: 30px; }
  .wb-compare,
  .wb-compare.wb-compare-three{ grid-template-columns: minmax(0, 1fr); }
  .wb-rail{ position: static; }
  .wb-rail-inner{ display: none; }
  .wb-rail.is-open .wb-rail-inner{ display: flex; flex-direction: column; align-items: stretch; }
  .wb-rail .wb-adjust{ flex-direction: column; align-items: stretch; }
  .wb-steps{ flex-direction: column; align-items: stretch; }
  .wb-step-bar{ width: 2px; height: 10px; margin-left: 17px; }
  .wb-lesson-link{ min-height: 52px; }
  .wb-adjust-btn, .wb-adjust-toggle, .lang-dd-trigger, .lang-dd-item{ min-height: 48px; }
  img, table, pre{ max-width: 100%; }
}

/* ── high contrast: flat surfaces, visible edges on every new component ── */
html.hc-mode .wb-sidebar-inner,
html.hc-mode .wb-rail-lang,
html.hc-mode .wb-steps,
html.hc-mode .wb-compare-card,
html.hc-mode .wb-callout,
html.hc-mode .quiz-why,
html.hc-mode .wb-mobile-btn,
html.hc-mode .wb-rail-inner{
  background: #000000;
  border: 2px solid #FFFFFF;
}
html.hc-mode .wb-section-icon,
html.hc-mode .quiz-why-icon,
html.hc-mode .wb-compare-mark,
html.hc-mode .quiz-option-mark{
  background: #000000;
  border: 2px solid currentColor;
}
html.hc-mode .wb-callout{ border-left-width: 6px; }
html.hc-mode .quiz-why{ border-left-width: 6px; }
html.hc-mode .wb-lesson-link.is-current,
html.hc-mode .wb-step.is-current .wb-step-dot{ background: #000000; border: 2px solid var(--coral); }
html.hc-mode .wb-step.is-current .wb-step-dot{ color: var(--coral); }
html.hc-mode .wb-lesson-link:hover,
html.hc-mode .wb-step:hover{ outline: 2px solid #FFFFFF; }

/* ── keyboard focus stays visible on every new control ── */
.wb-lesson-link:focus-visible,
.wb-step:focus-visible,
.wb-mobile-btn:focus-visible,
.lang-dd-trigger:focus-visible,
.lang-dd-item:focus-visible,
.lang-dd-retry:focus-visible{
  outline: 3px solid var(--blue-bright);
  outline-offset: 2px;
}