@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@500;600;700;800&family=Tajawal:wght@300;400;500;700&family=Poppins:wght@500;600;700&family=Inter:wght@400;500;600&display=swap');

:root{
  /* Modern refreshed light theme — violet primary with rose/emerald/indigo level accents. */
  --ink:#f6f5f9;          /* page background */
  --ink-2:#ffffff;        /* card / panel background */
  --ink-3:#f1eff7;        /* input / option background */
  --paper:#1a1523;        /* primary text (deep violet-black) */
  --gold:#7c3aed;         /* primary accent / CTA (vivid violet) */
  --gold-dim:#6d28d9;
  --coral:#fb7185;        /* Beginner — rose */
  --teal:#10b981;         /* Intermediate — emerald */
  --violet:#4f46e5;       /* Advanced — indigo */
  --ink-soft:#6b6478;     /* secondary text */
  --success:#16a34a;
  --danger:#dc2626;
  --line: rgba(26,21,35,0.09);
  --radius: 20px;
  --shadow: 0 20px 40px -24px rgba(76,29,149,0.18);
}

:root[data-theme="dark"]{
  /* Modern dark theme — brighter violet/rose/emerald/indigo tuned for a near-black background. */
  --ink:#0a0710;
  --ink-2:#18131f;
  --ink-3:#221c2c;
  --paper:#f3f0f9;
  --gold:#a78bfa;
  --gold-dim:#c4b5fd;
  --coral:#fb7185;
  --teal:#34d399;
  --violet:#818cf8;
  --ink-soft:#a29aae;
  --success:#4ade80;
  --danger:#f87171;
  --line: rgba(243,240,249,0.12);
  --shadow: 0 20px 40px -24px rgba(0,0,0,0.7);
}
:root[data-theme="dark"] .site-nav{
  background:rgba(10,7,16,0.68);
}
:root[data-theme="dark"] .quiz-opt.correct{color:#bdf5cc;}
:root[data-theme="dark"] .quiz-opt.incorrect{color:#ffd4d0;}
:root[data-theme="dark"] .rq-opt.correct{color:#bdf5cc;}
:root[data-theme="dark"] .rq-opt.incorrect{color:#ffd4d0;}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:'Tajawal', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight:400;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  position:relative;
}

/* ---------- Living background: soft drifting language-themed gradient mesh ---------- */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(560px 420px at 12% 8%, color-mix(in srgb, var(--coral) 16%, transparent), transparent 70%),
    radial-gradient(620px 480px at 88% 18%, color-mix(in srgb, var(--teal) 14%, transparent), transparent 70%),
    radial-gradient(700px 520px at 50% 95%, color-mix(in srgb, var(--violet) 12%, transparent), transparent 70%);
  background-repeat:no-repeat;
  animation: meshDrift 26s ease-in-out infinite alternate;
}
@keyframes meshDrift{
  0%{background-position:0% 0%, 0% 0%, 0% 0%;}
  100%{background-position:2% 3%, -3% 2%, 1% -2%;}
}
@media (prefers-reduced-motion: reduce){
  body::before{animation:none;}
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image: radial-gradient(color-mix(in srgb, var(--paper) 16%, transparent) 1px, transparent 1.6px);
  background-size: 26px 26px;
  opacity:.5;
  mask-image: radial-gradient(1200px 800px at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(1200px 800px at 50% 0%, #000 0%, transparent 75%);
}
[dir="ltr"], .en{
  font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
h1,h2,h3, .display{
  font-family:'Cairo', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight:700;
  letter-spacing:-0.01em;
  margin:0;
}
.en-word{
  font-family:'Poppins', sans-serif;
  font-weight:600;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}

.wrap{
  max-width:1080px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Nav ---------- */
.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 24px;
  max-width:1080px;
  margin:0 auto;
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(245,245,247,0.78);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
}
.brand{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:'Cairo',sans-serif;
  font-weight:700;
  font-size:1.08rem;
}
.logo-mark{
  width:28px;height:28px;border-radius:9px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg, var(--gold), var(--coral));
  box-shadow:0 4px 12px -4px color-mix(in srgb, var(--gold) 60%, transparent);
}
.logo-mark svg{width:16px;height:16px;}
.site-nav nav{display:flex;gap:26px;font-size:.88rem;color:var(--ink-soft);}
.site-nav nav a:hover{color:var(--paper);}

.theme-toggle{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:var(--ink-2);color:var(--ink-soft);
  display:flex;align-items:center;justify-content:center;
  margin-inline-start:16px;flex:none;
  transition:background .15s ease, color .15s ease, transform .15s ease;
}
.theme-toggle svg{width:17px;height:17px;}
.theme-toggle:hover{color:var(--gold);transform:rotate(12deg);}

/* ---------- Hero ---------- */
.hero{
  padding:64px 0 20px;
  text-align:center;
  position:relative;
  overflow:visible;
}
.hero-decor{
  position:absolute;
  inset:0;
  pointer-events:none;
  z-index:0;
}
.hero-decor .float-icon{
  position:absolute;
  width:52px;height:52px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:color-mix(in srgb, var(--fi-color) 14%, #fff);
  color:var(--fi-color);
  box-shadow:0 14px 30px -16px color-mix(in srgb, var(--fi-color) 45%, transparent);
  animation: floatY 6s ease-in-out infinite;
}
.hero-decor .float-icon svg{width:24px;height:24px;}
.hero-decor .float-icon.i1{top:8%;left:3%;--fi-color:var(--coral);animation-delay:0s;}
.hero-decor .float-icon.i2{top:10%;right:3%;--fi-color:var(--teal);animation-delay:1.2s;}
.hero-decor .float-icon.i3{bottom:6%;left:5%;--fi-color:var(--violet);animation-delay:2.4s;}
.hero-decor .float-icon.i4{bottom:8%;right:5%;--fi-color:var(--gold);animation-delay:.6s;}
.hero-decor .glyph{display:none;}
@keyframes floatY{
  0%,100%{transform:translateY(0) rotate(0deg);}
  50%{transform:translateY(-14px) rotate(-4deg);}
}
@media (prefers-reduced-motion: reduce){
  .hero-decor .float-icon, .hero-decor .glyph{animation:none;}
}
@media (max-width:760px){ .hero-decor{display:none;} }
.hero .wrap{position:relative;z-index:1;}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;font-weight:600;letter-spacing:.01em;
  color:var(--gold);
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(2.1rem, 5.4vw, 3.6rem);
  line-height:1.2;
  max-width:780px;
  margin:0 auto 20px;
  color:var(--paper);
}
.hero h1 .accent{color:var(--gold);}
.hero p.lead{
  color:var(--ink-soft);
  font-size:1.15rem;
  font-weight:400;
  max-width:580px;
  margin:0 auto 34px;
}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:8px;}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:980px;
  font-weight:600;font-size:.95rem;
  border:1px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, opacity .15s ease;
}
.btn-primary{
  background:var(--gold);color:#fff;
  box-shadow:0 8px 20px -8px rgba(0,113,227,0.55);
}
.btn-primary:hover{background:var(--gold-dim);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;color:var(--gold);
  border-color:transparent;
}
.btn-ghost:hover{opacity:.7;}

/* ---------- Path (signature element) ---------- */
.path-section{padding:26px 0 70px;}
.path-svg-wrap{
  position:relative;
  width:100%;
  max-width:920px;
  margin:0 auto;
}
.station{
  position:absolute;
  transform:translate(-50%,-50%);
  text-align:center;
  width:180px;
}
.station .ring{
  width:68px;height:68px;border-radius:50%;
  margin:0 auto 12px;
  display:flex;align-items:center;justify-content:center;
  background:#ffffff;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  font-family:'Cairo',sans-serif;font-weight:700;font-size:1.3rem;
  color:var(--ink-soft);
  position:relative;
  transition:border-color .2s ease, box-shadow .2s ease, color .2s ease;
}
.station .ring svg{width:28px;height:28px;}
.station.unlocked .ring{color:var(--station-color);box-shadow:0 12px 28px -14px color-mix(in srgb, var(--station-color) 55%, transparent), var(--shadow);}
.station .name-ar{font-weight:600;font-size:.98rem;margin-bottom:2px;color:var(--paper);}
.station .name-en{color:var(--ink-soft);font-size:.76rem;}
.station .progress-label{
  margin-top:6px;font-size:.72rem;color:var(--station-color);font-weight:700;
}
.station a.station-link{display:block;}
.station.locked{opacity:.55;}
.station.locked .ring{filter:grayscale(.5);}

/* ---------- Level cards ---------- */
.levels-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:56px;
}
@media (max-width:820px){.levels-grid{grid-template-columns:1fr;}}
.level-card{
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .18s ease, box-shadow .18s ease;
}
.level-card:hover{transform:translateY(-4px);box-shadow:0 26px 46px -22px rgba(0,0,0,0.28);}
.level-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:4px;
  background:var(--lc-color);
}
.card-watermark{
  position:absolute;
  bottom:-14px;inset-inline-end:-14px;
  width:96px;height:96px;
  color:var(--lc-color);opacity:.08;
  pointer-events:none;
}
.card-watermark svg{width:100%;height:100%;}
.level-card .lvl-tag{
  display:inline-block;font-size:.75rem;font-weight:700;
  color:var(--lc-color);
  background:color-mix(in srgb, var(--lc-color) 14%, transparent);
  padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.level-card h3{font-size:1.3rem;margin-bottom:8px;color:var(--paper);}
.level-card p{color:var(--ink-soft);font-size:.92rem;margin-bottom:18px;min-height:64px;}
.level-card .meta{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--ink-soft);margin-bottom:16px;}
.level-card .bar{height:6px;border-radius:99px;background:var(--ink-3);overflow:hidden;margin-bottom:18px;border:1px solid var(--line);}
.level-card .bar span{display:block;height:100%;background:var(--lc-color);}

/* ---------- How it works ---------- */
.how{padding:70px 0;border-top:1px solid var(--line);margin-top:20px;}
.how h2{font-size:1.9rem;text-align:center;margin-bottom:48px;color:var(--paper);}
.how-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media (max-width:900px){.how-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.how-grid{grid-template-columns:1fr;}}
.how-step{background:var(--ink-2);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);}
.how-icon{
  width:40px;height:40px;border-radius:12px;margin-bottom:14px;
  background:color-mix(in srgb, var(--hs-color) 16%, transparent);color:var(--hs-color);
  display:flex;align-items:center;justify-content:center;
}
.how-icon svg{width:20px;height:20px;}
.how-step .num{font-family:'Cairo',sans-serif;font-weight:700;color:var(--hs-color, var(--gold));font-size:.85rem;margin-bottom:8px;}
.how-step h4{font-size:1.02rem;margin-bottom:8px;color:var(--paper);}
.how-step p{color:var(--ink-soft);font-size:.87rem;margin:0;}

footer{
  border-top:1px solid var(--line);
  padding:34px 0 56px;
  text-align:center;
  color:var(--ink-soft);
  font-size:.85rem;
}

/* ---------- Level page ---------- */
.level-hero{
  padding:48px 0 10px;
  border-bottom:1px solid var(--line);
}
.level-hero .lvl-tag{display:inline-block;font-size:.78rem;font-weight:700;padding:5px 12px;border-radius:999px;margin-bottom:14px;}
.level-hero h1{font-size:2.1rem;margin-bottom:10px;color:var(--paper);}
.level-hero p{color:var(--ink-soft);max-width:640px;}
.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--ink-soft);font-size:.86rem;margin-bottom:18px;}
.back-link:hover{color:var(--paper);}

.unit-path{
  max-width:640px;
  margin:44px auto 60px;
}
.sub-level-group{margin-bottom:38px;}
.sub-level-group:last-child{margin-bottom:0;}
.sub-level-heading{
  display:flex;align-items:center;gap:14px;margin-bottom:18px;
}
.sub-level-badge{
  width:34px;height:34px;border-radius:50%;flex:none;
  background:var(--ink-3);border:1px solid var(--line);color:var(--ink-soft);
  display:flex;align-items:center;justify-content:center;
  font-family:'Cairo',sans-serif;font-weight:800;font-size:.95rem;
}
.sub-level-badge svg{width:16px;height:16px;}
.sub-level-badge.done{background:color-mix(in srgb, var(--lc-color) 16%, transparent);border-color:var(--lc-color);color:var(--lc-color);}
.sub-level-heading h3{font-size:1.05rem;color:var(--paper);margin-bottom:2px;display:flex;gap:8px;align-items:baseline;}
.sub-level-heading p{font-size:.82rem;margin:0;}
.sub-level-group.locked .sub-level-heading{opacity:.6;}
.sub-level-units{
  position:relative;
  padding-inline-start:34px;
  border-inline-start:2px solid var(--line);
}
.unit-node{
  position:relative;
  margin-bottom:16px;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px 20px;
  display:flex;
  align-items:center;
  gap:16px;
  box-shadow:var(--shadow);
}
.unit-node:last-child{margin-bottom:0;}
.unit-node::before{
  content:attr(data-n);
  position:absolute;
  inset-inline-start:-46px;
  top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;
  background:var(--ink-2);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:'Cairo',sans-serif;font-weight:700;font-size:.85rem;
  color:var(--ink-soft);
}
.unit-node.done::before{border-color:var(--lc-color);color:var(--lc-color);background:color-mix(in srgb, var(--lc-color) 12%, #fff);}
.unit-node.locked{opacity:.55;cursor:default;}
.unit-node .u-icon{
  width:44px;height:44px;border-radius:12px;flex:none;
  background:color-mix(in srgb, var(--lc-color) 14%, transparent);
  display:flex;align-items:center;justify-content:center;color:var(--lc-color);
}
.unit-node .u-icon svg{width:22px;height:22px;}
.unit-node .u-text{flex:1;}
.unit-node h4{font-size:1.02rem;margin-bottom:2px;color:var(--paper);}
.unit-node .u-en{color:var(--ink-soft);font-size:.8rem;}
.unit-node .u-status{font-size:.78rem;color:var(--lc-color);font-weight:700;white-space:nowrap;}
.unit-node.done .u-status{color:var(--lc-color);}
.unit-node:not(.done) .u-status{color:var(--ink-soft);}

.level-quiz-cta{
  max-width:640px;margin:0 auto 60px;
  background:var(--ink-2);border:1px solid var(--line);border-radius:20px;
  padding:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.level-quiz-cta h3{font-size:1.1rem;margin-bottom:6px;color:var(--paper);}
.level-quiz-cta p{color:var(--ink-soft);font-size:.88rem;margin:0;}

/* ---------- Lesson page ---------- */
.lesson-header{padding:40px 0 6px;}
.lesson-header .lvl-tag{display:inline-block;font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;margin-bottom:12px;}
.lesson-header h1{font-size:2rem;margin-bottom:6px;color:var(--paper);}
.lesson-header .u-en{color:var(--ink-soft);font-family:'Poppins',sans-serif;}
.lesson-intro{
  max-width:760px;margin:22px 0 40px;
  color:var(--paper);
  background:var(--ink-2);
  border-inline-start:3px solid var(--lc-color);
  border-radius:14px;
  padding:18px 22px;
  font-size:.98rem;
  box-shadow:var(--shadow);
}

.section-title{
  display:flex;align-items:center;gap:10px;
  font-size:1.2rem;margin:46px 0 20px;color:var(--paper);
}
.section-title .badge{
  width:30px;height:30px;border-radius:9px;
  background:color-mix(in srgb, var(--lc-color) 16%, transparent);
  color:var(--lc-color);display:flex;align-items:center;justify-content:center;
}
.section-title .badge svg{width:16px;height:16px;}

.vocab-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;}
.vocab-card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:18px;
  box-shadow:var(--shadow);
}
.vocab-card .vc-en{font-family:'Poppins',sans-serif;font-weight:700;font-size:1.05rem;color:var(--lc-color);margin-bottom:4px;}
.vocab-card .vc-ar{font-weight:700;margin-bottom:10px;color:var(--paper);}
.vocab-card .vc-ex-en{font-family:'Inter',sans-serif;font-size:.85rem;color:var(--paper);opacity:.85;margin-bottom:2px;}
.vocab-card .vc-ex-ar{font-size:.82rem;color:var(--ink-soft);}

.grammar-box{
  background:var(--ink-2);border:1px solid var(--line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow);
}
.grammar-box h4{font-size:1.05rem;margin-bottom:10px;color:var(--lc-color);}
.grammar-box p{color:var(--paper);font-size:.94rem;margin-bottom:16px;}
.grammar-ex{border-inline-start:2px solid var(--line);padding-inline-start:14px;margin-bottom:10px;}
.grammar-ex .ge-en{font-family:'Inter',sans-serif;color:var(--paper);}
.grammar-ex .ge-ar{color:var(--ink-soft);font-size:.88rem;}

.dialogue-box{display:flex;flex-direction:column;gap:10px;}
.bubble{
  max-width:82%;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:18px;
  padding:12px 16px;
  box-shadow:var(--shadow);
}
.bubble .b-speaker{font-size:.72rem;color:var(--lc-color);font-weight:700;margin-bottom:4px;}
.bubble .b-en{font-family:'Inter',sans-serif;margin-bottom:3px;color:var(--paper);}
.bubble .b-ar{color:var(--ink-soft);font-size:.88rem;}
.bubble:nth-child(even){align-self:flex-end;background:color-mix(in srgb, var(--lc-color) 8%, #fff);}

.tips-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.tips-list li{
  background:var(--ink-2);border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;font-size:.9rem;position:relative;padding-inline-start:42px;
  box-shadow:var(--shadow);color:var(--paper);
}
.tips-list li::before{
  content:"💡";position:absolute;inset-inline-start:14px;top:14px;
}

.lesson-footer{
  display:flex;justify-content:space-between;align-items:center;
  margin:50px 0 70px;flex-wrap:wrap;gap:14px;
}

/* ---------- Reading & Writing blocks ---------- */
.reading-box{
  background:var(--ink-2);border:1px solid var(--line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow);
}
.reading-en{font-family:'Inter',sans-serif;color:var(--paper);line-height:1.9;margin:0 0 14px;}
.reading-ar{color:var(--ink-soft);font-size:.92rem;line-height:1.9;margin:0;}
.reading-questions{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);}
.rq-label{font-size:.8rem;font-weight:700;color:var(--lc-color);margin-bottom:14px;}
.rq-item{margin-bottom:18px;}
.rq-item:last-child{margin-bottom:0;}
.rq-q{font-size:.96rem;font-weight:600;color:var(--paper);margin-bottom:10px;}
.rq-options{display:flex;flex-direction:column;gap:8px;}
.rq-opt{
  text-align:start;background:var(--ink-3);border:1px solid var(--line);border-radius:10px;
  padding:10px 14px;font-size:.9rem;font-family:'Inter',sans-serif;color:var(--paper);
  transition:border-color .15s ease, background .15s ease;
}
.rq-opt:hover{border-color:var(--lc-color);}
.rq-opt.correct{border-color:var(--success, #1a9e46);background:color-mix(in srgb, var(--success, #1a9e46) 14%, var(--ink-3));}
.rq-opt.incorrect{border-color:var(--danger, #e0342a);background:color-mix(in srgb, var(--danger, #e0342a) 12%, var(--ink-3));}
.rq-opt[disabled]{cursor:default;}

.writing-box{
  background:var(--ink-2);border:1px solid var(--line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow);
}
.writing-prompt{color:var(--paper);font-size:.98rem;margin:0 0 16px;line-height:1.8;}
.writing-example{background:var(--ink-3);border:1px solid var(--line);border-radius:12px;padding:14px 18px;}
.writing-example summary{cursor:pointer;font-size:.86rem;font-weight:600;color:var(--lc-color);}
.writing-example .reading-en{margin-top:12px;margin-bottom:6px;font-size:.92rem;}
.writing-example .reading-ar{font-size:.85rem;}

/* ---------- Quiz ---------- */
.quiz-shell{max-width:640px;margin:0 auto;padding:50px 24px 80px;}
.quiz-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.quiz-dots{display:flex;gap:6px;}
.quiz-dots span{width:8px;height:8px;border-radius:50%;background:var(--line);}
.quiz-dots span.active{background:var(--lc-color);width:22px;border-radius:99px;transition:.2s;}
.quiz-dots span.answered{background:var(--lc-color);opacity:.5;}
.quiz-card{background:var(--ink-2);border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--shadow);}
.quiz-q{font-size:1.25rem;margin-bottom:26px;line-height:1.6;color:var(--paper);font-weight:600;}
.quiz-options{display:flex;flex-direction:column;gap:12px;}
.quiz-opt{
  text-align:start;
  background:var(--ink-3);
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px 18px;
  font-size:1rem;
  font-family:'Inter',sans-serif;
  color:var(--paper);
  transition:border-color .15s ease, background .15s ease;
}
.quiz-opt:hover{border-color:var(--lc-color);}
.quiz-opt.correct{border-color:var(--success);background:color-mix(in srgb, var(--success) 12%, #fff);color:#0d5c26;}
.quiz-opt.incorrect{border-color:var(--danger);background:color-mix(in srgb, var(--danger) 10%, #fff);color:#8c1f18;}
.quiz-opt[disabled]{cursor:default;}
.quiz-explain{
  margin-top:18px;padding:14px 16px;border-radius:14px;
  background:var(--ink-3);font-size:.9rem;color:var(--ink-soft);display:none;
  border:1px solid var(--line);
}
.quiz-explain.show{display:block;}
.quiz-next{margin-top:22px;display:flex;justify-content:flex-end;}

.result-card{text-align:center;padding:20px 0;}
.result-score{font-family:'Cairo',sans-serif;font-weight:800;font-size:3rem;margin:20px 0 6px;color:var(--lc-color);}
.result-msg{color:var(--ink-soft);margin-bottom:30px;}
.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- Placement ---------- */
.placement-intro{max-width:560px;margin:0 auto;text-align:center;padding:80px 24px 40px;}
.placement-intro h1{font-size:2rem;margin-bottom:14px;color:var(--paper);}
.placement-intro p{color:var(--ink-soft);margin-bottom:30px;}

.placement-result{max-width:560px;margin:0 auto;text-align:center;padding:80px 24px;}
.placement-result .badge-level{
  display:inline-block;padding:8px 20px;border-radius:999px;
  font-weight:800;font-family:'Cairo',sans-serif;margin:18px 0 10px;
}

/* ---------- Scroll reveal ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s ease, transform .6s ease;
}
[data-reveal].in-view{
  opacity:1;
  transform:translateY(0);
}
@media (prefers-reduced-motion: reduce){
  [data-reveal]{opacity:1;transform:none;transition:none;}
}

.muted{color:var(--ink-soft);}
.center{text-align:center;}
.mt-0{margin-top:0;}

/* ---------- Grammar reference ---------- */
.grammar-hero{padding:56px 0 10px;text-align:center;}
.grammar-hero h1{font-size:2rem;margin-bottom:10px;color:var(--paper);}
.grammar-hero p{color:var(--ink-soft);max-width:600px;margin:0 auto;}
.grammar-categories{margin:40px 0 70px;display:flex;flex-direction:column;gap:36px;}
.gr-category h3{font-size:1.15rem;margin-bottom:16px;color:var(--paper);}
.gr-chapter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;}
.gr-chapter-card{
  display:flex;align-items:center;gap:12px;
  background:var(--ink-2);border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;box-shadow:var(--shadow);
  transition:transform .15s ease;
}
.gr-chapter-card:hover{transform:translateY(-2px);}
.gr-chapter-icon{
  width:38px;height:38px;border-radius:10px;flex:none;
  background:color-mix(in srgb, var(--gold) 14%, transparent);color:var(--gold);
  display:flex;align-items:center;justify-content:center;
}
.gr-chapter-icon svg{width:19px;height:19px;}
.gr-chapter-text{display:flex;flex-direction:column;gap:1px;}
.gr-chapter-ar{font-size:.92rem;font-weight:600;color:var(--paper);}
.gr-chapter-en{font-size:.74rem;color:var(--ink-soft);}

.gr-sections{display:flex;flex-direction:column;gap:16px;margin:30px 0;}
.gr-section-card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:18px;
  padding:24px 26px;box-shadow:var(--shadow);
  color:var(--paper);font-size:.96rem;line-height:1.85;
}
.gr-section-card p{margin:0 0 10px;}
.gr-section-card p:last-child{margin-bottom:0;}
.gr-subhead{font-size:1.02rem;color:var(--gold);margin:0 0 10px;font-family:'Cairo',sans-serif;font-weight:700;}
.gr-table-wrap{overflow-x:auto;margin:12px 0;}
.gr-table{border-collapse:collapse;width:100%;font-size:.9rem;}
.gr-table td{border:1px solid var(--line);padding:8px 12px;text-align:center;background:var(--ink-3);}

/* ---------- Profile page ---------- */
.profile-hero{padding:56px 0 10px;}
.profile-header{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  background:var(--ink-2);border:1px solid var(--line);border-radius:22px;
  padding:28px;box-shadow:var(--shadow);margin-top:24px;
}
.profile-avatar{
  width:74px;height:74px;border-radius:50%;flex:none;
  background:linear-gradient(135deg, var(--coral), var(--violet));
  color:#fff;font-family:'Cairo',sans-serif;font-weight:800;font-size:1.4rem;
  display:flex;align-items:center;justify-content:center;
}
.profile-name-wrap{flex:1;min-width:200px;}
.profile-name-input{
  width:100%;max-width:340px;font-family:'Cairo',sans-serif;font-weight:700;font-size:1.2rem;
  border:1px solid var(--line);border-radius:12px;padding:10px 14px;
  background:var(--ink-3);color:var(--paper);
}
.profile-name-input:focus{outline:none;border-color:var(--gold);}
.profile-name-wrap p{margin:8px 0 0;font-size:.8rem;}

.profile-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:28px 0;
}
@media (max-width:760px){.profile-stats{grid-template-columns:repeat(2,1fr);}}
.stat-card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:16px;
  padding:20px;text-align:center;box-shadow:var(--shadow);
}
.stat-value{font-family:'Cairo',sans-serif;font-weight:800;font-size:1.7rem;color:var(--paper);}
.stat-value .stat-of{font-size:1rem;color:var(--ink-soft);font-weight:600;}
.stat-label{font-size:.8rem;color:var(--ink-soft);margin-top:4px;}

.profile-levels{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:40px;}
@media (max-width:760px){.profile-levels{grid-template-columns:1fr;}}
.profile-level-card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:16px;
  padding:18px 20px;box-shadow:var(--shadow);
}
.plc-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:.85rem;}

.badges-section-head{display:flex;justify-content:space-between;align-items:center;margin:0 0 18px;}
.badges-section-head h2{font-size:1.2rem;color:var(--paper);}
#badgesCount{font-size:.85rem;color:var(--gold);font-weight:700;}
.badges-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:70px;
}
.badge-card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:16px;
  padding:20px;text-align:center;box-shadow:var(--shadow);
}
.badge-card.locked{opacity:.5;}
.badge-icon{
  width:46px;height:46px;border-radius:50%;margin:0 auto 12px;
  display:flex;align-items:center;justify-content:center;
  background:color-mix(in srgb, var(--badge-color) 16%, transparent);color:var(--badge-color);
}
.badge-card.locked .badge-icon{background:var(--ink-3);color:var(--ink-soft);}
.badge-icon svg{width:22px;height:22px;}
.badge-title{font-size:.92rem;font-weight:700;color:var(--paper);margin-bottom:4px;}
.badge-desc{font-size:.78rem;color:var(--ink-soft);line-height:1.6;}

/* ---------- Brand intro section ---------- */
.brand-intro{
  display:flex;align-items:flex-start;gap:22px;
  background:var(--ink-2);border:1px solid var(--line);border-radius:22px;
  padding:30px;box-shadow:var(--shadow);margin:10px 0 50px;
}
.logo-mark.lg{width:52px;height:52px;border-radius:16px;}
.logo-mark.lg svg{width:26px;height:26px;}
.brand-intro h2{font-size:1.2rem;margin-bottom:10px;color:var(--paper);}
.brand-intro p{color:var(--ink-soft);font-size:.94rem;line-height:1.85;margin:0;max-width:640px;}
@media (max-width:600px){.brand-intro{flex-direction:column;}}

/* ---------- Lesson enrichment: fun fact + common mistake ---------- */
.enrich-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:30px 0;
}
@media (max-width:700px){.enrich-grid{grid-template-columns:1fr;}}
.enrich-card{
  border-radius:18px;padding:20px;box-shadow:var(--shadow);
  display:flex;gap:14px;align-items:flex-start;
}
.enrich-icon{font-size:1.3rem;flex:none;line-height:1;}
.enrich-label{font-size:.78rem;font-weight:700;margin-bottom:8px;}
.fact-card{background:color-mix(in srgb, var(--gold) 8%, var(--ink-2));border:1px solid color-mix(in srgb, var(--gold) 25%, var(--line));}
.fact-card .enrich-label{color:var(--gold);}
.mistake-card{background:color-mix(in srgb, var(--danger) 6%, var(--ink-2));border:1px solid color-mix(in srgb, var(--danger) 22%, var(--line));}
.mistake-card .enrich-label{color:var(--danger);}
.mistake-wrong{font-family:'Inter',sans-serif;color:var(--danger);text-decoration:line-through;margin:0 0 4px;font-size:.9rem;}
.mistake-right{font-family:'Inter',sans-serif;color:var(--success);margin:0;font-size:.9rem;font-weight:600;}