:root{
  --pink:#ff6b9d; --purple:#a06bff; --blue:#42a5f5; --teal:#26c6da;
  --green:#39d98a; --yellow:#ffd15c; --orange:#ff924c; --red:#ff5d5d;
  --ink:#2b2350; --ink-soft:#5b5480; --paper:#fffdf8;
  --card:#ffffff; --ring:#ececff;
  --shadow:0 12px 30px rgba(90,70,180,.14);
  --shadow-lg:0 20px 50px rgba(90,70,180,.22);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Cairo','Tajawal','Segoe UI',Tahoma,Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 600px at 90% -10%, #ffe6f0 0, transparent 60%),
    radial-gradient(1000px 500px at 0% 0%, #e6f0ff 0, transparent 55%),
    radial-gradient(900px 600px at 50% 120%, #e9fff4 0, transparent 55%),
    #f5f3ff;
  min-height:100vh;
  -webkit-tap-highlight-color:transparent;
}
.wrap{max-width:900px;margin:0 auto;padding:18px 16px 120px}

/* ---------- Header ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--purple),var(--pink));
  color:#fff;border-radius:28px;padding:26px 24px;
  box-shadow:var(--shadow-lg);
  text-align:center;
}
.hero h1{margin:.1em 0 .15em;font-size:clamp(26px,6vw,42px);font-weight:900;letter-spacing:.5px}
.hero p{margin:0;opacity:.95;font-size:clamp(14px,3.4vw,18px);font-weight:600}
.badge{
  display:inline-block;background:rgba(255,255,255,.22);
  padding:6px 16px;border-radius:999px;font-weight:700;font-size:14px;margin-bottom:6px;
  backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.35);
}
.owl{font-size:52px;line-height:1;display:inline-block;animation:bob 3s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-8px) rotate(3deg)}}
.blob{position:absolute;border-radius:50%;filter:blur(2px);opacity:.25}
.blob.b1{width:150px;height:150px;background:#fff;top:-50px;left:-30px}
.blob.b2{width:90px;height:90px;background:var(--yellow);bottom:-30px;right:10%;opacity:.5}

/* ---------- Back link ---------- */
.back{
  display:inline-flex;align-items:center;gap:6px;text-decoration:none;
  color:var(--purple);font-weight:800;font-size:15px;background:#fff;
  padding:8px 16px;border-radius:999px;box-shadow:var(--shadow);border:2px solid var(--ring);
  margin-bottom:12px;transition:.15s;
}
.back:hover{transform:translateX(4px)}

/* ---------- Score bar ---------- */
.scorebar{
  position:sticky;top:10px;z-index:40;margin:16px 0 22px;
  background:var(--card);border-radius:20px;box-shadow:var(--shadow);
  padding:12px 16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  border:2px solid var(--ring);
}
.stars{font-size:22px;letter-spacing:2px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.12))}
.progress{flex:1;min-width:140px;height:16px;background:#eee6ff;border-radius:999px;overflow:hidden}
.progress > i{display:block;height:100%;width:0;border-radius:999px;
  background:linear-gradient(90deg,var(--green),var(--teal));transition:width .5s cubic-bezier(.2,.9,.3,1.2)}
.scorepill{font-weight:800;background:linear-gradient(135deg,var(--yellow),var(--orange));
  color:#5a3d00;padding:7px 14px;border-radius:999px;white-space:nowrap;box-shadow:0 4px 10px rgba(255,146,76,.35)}

/* ---------- Cards ---------- */
.card{
  background:var(--card);border-radius:24px;padding:22px 20px;margin:18px 0;
  box-shadow:var(--shadow);border:2px solid var(--ring);position:relative;
  animation:rise .5s both;
}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.card h2{margin:.1em 0 .1em;font-size:clamp(19px,4.5vw,26px);font-weight:900;display:flex;align-items:center;gap:10px}
.num{display:inline-grid;place-items:center;min-width:38px;height:38px;border-radius:12px;
  color:#fff;font-weight:900;font-size:18px;box-shadow:0 6px 14px rgba(0,0,0,.15)}
.c1 .num{background:var(--blue)} .c2 .num{background:var(--pink)}
.c3 .num{background:var(--orange)} .c4 .num{background:var(--purple)}
.c5 .num{background:var(--teal)} .c6 .num{background:var(--green)}
.hint{color:var(--ink-soft);font-weight:600;margin:.2em 0 1em;font-size:15px}

/* ---------- Lesson ---------- */
.lesson{background:linear-gradient(135deg,#fff7fb,#f3f7ff)}
.def{background:#fff;border:2px dashed var(--purple);border-radius:18px;padding:16px 18px;font-size:clamp(17px,4vw,21px);font-weight:700;line-height:2}
.def b{color:var(--pink)}
.examples{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
.ex{flex:1;min-width:200px;background:#fff;border-radius:16px;padding:12px 16px;font-size:19px;font-weight:700;
  box-shadow:var(--shadow);border:2px solid var(--ring)}
.ex .hword{color:#fff;background:var(--green);padding:2px 10px;border-radius:8px;display:inline-block}

/* ---------- Sentence word buttons (clickWord) ---------- */
.sentence{font-size:clamp(19px,4.6vw,24px);font-weight:700;line-height:2.4;margin:10px 0;
  padding:10px 14px;background:#faf8ff;border-radius:16px;border:2px solid var(--ring)}
.w{cursor:pointer;padding:2px 8px;border-radius:10px;transition:.15s;border:2px solid transparent;display:inline-block}
.w:hover{background:#efe9ff}
.w.correct{background:var(--green);color:#fff;border-color:#1faf6a;animation:pop .35s}
.w.wrong{background:var(--red);color:#fff;animation:shake .4s}
.w.locked{cursor:default}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.25)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}

/* ---------- MCQ / convert ---------- */
.q{margin:14px 0;padding:14px;border-radius:16px;background:#faf8ff;border:2px solid var(--ring)}
.q .stem{font-size:clamp(18px,4.4vw,22px);font-weight:800;margin-bottom:10px}
.opts{display:flex;gap:10px;flex-wrap:wrap}
.opt{cursor:pointer;font-size:18px;font-weight:800;padding:10px 18px;border-radius:14px;
  background:#fff;border:2px solid var(--ring);transition:.15s;box-shadow:0 4px 10px rgba(0,0,0,.05)}
.opt:hover{transform:translateY(-2px);border-color:var(--purple)}
.opt.correct{background:var(--green);color:#fff;border-color:#1faf6a}
.opt.wrong{background:var(--red);color:#fff;border-color:#c33}
.opt.disabled{pointer-events:none;opacity:.75}

/* ---------- Blanks + word bank (fillBlanks) ---------- */
.blankline{font-size:clamp(18px,4.4vw,22px);font-weight:700;line-height:2.6;margin:8px 0}
.blank{display:inline-block;min-width:120px;border-bottom:3px dashed var(--orange);
  text-align:center;margin:0 6px;padding:2px 10px;border-radius:8px;cursor:pointer;transition:.15s;color:var(--orange)}
.blank.filled{border-bottom-style:solid;background:#fff4e6;color:var(--ink)}
.blank.correct{background:var(--green);color:#fff;border-bottom-color:#1faf6a}
.blank.wrong{background:var(--red);color:#fff}
.bank{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;padding:12px;background:#fff8ee;border-radius:16px;border:2px dashed var(--orange)}
.chip{cursor:pointer;font-size:17px;font-weight:800;padding:8px 16px;border-radius:999px;background:#fff;
  border:2px solid var(--orange);color:var(--orange);transition:.15s;box-shadow:0 4px 8px rgba(255,146,76,.2)}
.chip:hover{transform:translateY(-2px)}
.chip.active{background:var(--orange);color:#fff;transform:scale(1.05)}
.chip.used{opacity:.3;pointer-events:none}

/* ---------- Convert row ---------- */
.convrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:12px 0;padding:12px;
  background:#faf8ff;border-radius:16px;border:2px solid var(--ring)}
.srcword{font-size:21px;font-weight:900;background:var(--teal);color:#fff;padding:8px 18px;border-radius:12px;min-width:90px;text-align:center}
.arrow{font-size:22px;color:var(--ink-soft)}

/* ---------- Free write ---------- */
.writebox{display:flex;gap:8px;margin:10px 0;align-items:center}
.writebox input{flex:1;font-family:inherit;font-size:18px;font-weight:600;padding:12px 16px;
  border-radius:14px;border:2px solid var(--ring);background:#faf8ff;outline:none;transition:.15s}
.writebox input:focus{border-color:var(--green);background:#fff}
.writebox input.ok{border-color:var(--green);background:#eafff4}
.fb{font-weight:800;font-size:16px;min-width:44px;text-align:center}

.btn{cursor:pointer;font-family:inherit;font-weight:800;font-size:17px;border:none;color:#fff;
  padding:12px 26px;border-radius:14px;background:linear-gradient(135deg,var(--purple),var(--pink));
  box-shadow:0 8px 18px rgba(160,107,255,.4);transition:.15s}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:#fff;color:var(--purple);border:2px solid var(--purple);box-shadow:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:14px}

.note{margin-top:12px;padding:12px 14px;border-radius:14px;font-weight:700;display:none}
.note.show{display:block;animation:rise .3s both}
.note.good{background:#eafff4;color:#137a4c;border:2px solid var(--green)}
.note.info{background:#eef4ff;color:#2b5bb5;border:2px solid var(--blue)}

/* ---------- Final ---------- */
.final{display:none;text-align:center;background:linear-gradient(135deg,var(--yellow),var(--orange));color:#5a3d00}
.final.show{display:block}
.final h2{justify-content:center;font-size:30px;color:#5a3d00}
.final .big{font-size:64px;margin:6px 0}
.final .stars2{font-size:40px;letter-spacing:6px}

canvas.confetti{position:fixed;inset:0;pointer-events:none;z-index:60}
.foot{text-align:center;color:var(--ink-soft);font-weight:600;font-size:13px;margin-top:26px}

/* ============================================================
   فهرس  (subject hub / index page)
   ============================================================ */
.index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px;margin-top:22px}
.subject-card{
  display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;
  background:var(--card);border-radius:24px;padding:22px 20px;
  box-shadow:var(--shadow);border:2px solid var(--ring);position:relative;overflow:hidden;
  transition:.18s;animation:rise .5s both;
}
.subject-card:not(.locked):hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--purple)}
.subject-card .icon{font-size:44px;line-height:1}
.subject-card .title{font-size:22px;font-weight:900}
.subject-card .desc{color:var(--ink-soft);font-weight:600;font-size:14px;line-height:1.6}
.subject-card .tag{align-self:flex-start;margin-top:6px;font-weight:800;font-size:13px;
  padding:5px 14px;border-radius:999px}
.subject-card .tag.ready{background:linear-gradient(135deg,var(--green),var(--teal));color:#fff}
.subject-card .tag.soon{background:#efeaff;color:var(--ink-soft)}
.subject-card .stripe{position:absolute;inset-inline-start:0;top:0;bottom:0;width:8px}
.subject-card.locked{opacity:.7;cursor:not-allowed;filter:grayscale(.25)}
.subject-card.locked .icon{filter:grayscale(.4)}
.lock-emoji{position:absolute;top:14px;inset-inline-end:16px;font-size:20px;opacity:.5}
.section-title{font-size:clamp(20px,5vw,28px);font-weight:900;margin:28px 4px 4px}