:root{
  --ink:#123f3c;
  --ink-2:#275a57;
  --muted:#6d8583;
  --bg:#eef6f5;
  --surface:#ffffff;
  --line:#d6e5e3;
  --teal:#0b6f68;
  --teal-2:#14a398;
  --teal-soft:#e2f4f1;
  --purple:#7b68d6;
  --purple-soft:#eeeafd;
  --gold:#d8a52d;
  --gold-soft:#fff4d4;
  --green:#3b9a63;
  --danger:#cc5362;
  --danger-soft:#fff0f2;
  --shadow:0 20px 60px rgba(15,73,68,.12);
  --shadow-soft:0 10px 30px rgba(15,73,68,.08);
  --radius-xl:34px;
  --radius-lg:24px;
  --radius-md:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  margin:0;
  color:var(--ink);
  background:
    radial-gradient(circle at 10% 10%,rgba(123,104,214,.08),transparent 24rem),
    radial-gradient(circle at 92% 22%,rgba(20,163,152,.09),transparent 28rem),
    linear-gradient(180deg,#f7fbfb 0%,var(--bg) 100%);
  font-family:"SF Arabic","Noto Sans Arabic","Segoe UI",Tahoma,Arial,sans-serif;
  min-height:100vh;
}
button{font:inherit}
button:focus-visible{outline:3px solid rgba(11,111,104,.35);outline-offset:3px}
.page-shell{width:min(1180px,calc(100% - 28px));margin:auto;padding:28px 0 32px}
.hero{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:34px;
  align-items:center;
  min-height:390px;
  padding:48px;
  border:1px solid rgba(129,170,166,.22);
  border-radius:42px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.96),rgba(242,250,249,.92)),
    var(--surface);
  box-shadow:var(--shadow);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(11,111,104,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,111,104,.035) 1px,transparent 1px);
  background-size:28px 28px;
  mask-image:linear-gradient(to left,rgba(0,0,0,.9),transparent 72%);
  pointer-events:none;
}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.92rem;font-weight:800;color:var(--teal);background:var(--teal-soft);padding:9px 14px;border-radius:999px}
.pulse-dot{width:9px;height:9px;border-radius:50%;background:var(--teal-2);box-shadow:0 0 0 0 rgba(20,163,152,.35);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(20,163,152,0)}100%{box-shadow:0 0 0 0 rgba(20,163,152,0)}}
.hero h1{font-size:clamp(2.8rem,7vw,5.7rem);line-height:.95;margin:24px 0 18px;letter-spacing:-.055em}
.hero-lead{font-size:clamp(1rem,2vw,1.28rem);line-height:1.9;color:var(--ink-2);max-width:670px;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{border:none;border-radius:16px;padding:14px 22px;font-weight:900;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--teal),#0a5d58);box-shadow:0 12px 26px rgba(11,111,104,.23)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(11,111,104,.27)}
.btn-ghost{color:var(--ink);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft)}
.btn-dark{color:#fff;background:#183d3a}
.btn.small{padding:11px 17px;border-radius:14px}
.btn.full{width:100%}
.source-chip{display:inline-block;margin-top:20px;color:var(--muted);font-size:.88rem}
.hero-visual{position:relative;min-height:310px;display:grid;place-items:center}
.visual-glow{position:absolute;width:82%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(72,174,147,.22),rgba(123,104,214,.08) 48%,transparent 72%);filter:blur(3px)}
.cell-art{position:relative;z-index:2;width:min(100%,520px);filter:drop-shadow(0 26px 35px rgba(25,78,71,.13));animation:floatCell 6s ease-in-out infinite}
@keyframes floatCell{50%{transform:translateY(-9px)}}
.visual-badge{position:absolute;z-index:4;padding:10px 14px;border-radius:14px;background:rgba(255,255,255,.88);backdrop-filter:blur(8px);border:1px solid rgba(105,151,145,.2);box-shadow:var(--shadow-soft);font-weight:900}
.badge-a{right:4%;bottom:12%}
.badge-b{left:4%;top:11%;color:var(--purple)}

main{margin-top:26px}
.game-card{position:relative;background:rgba(255,255,255,.94);border:1px solid rgba(129,170,166,.25);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:28px}
.game-topbar{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:18px}
.section-kicker{font-size:.9rem;color:var(--teal);font-weight:900}
.game-topbar h2{margin:4px 0 0;font-size:clamp(1.6rem,3vw,2.35rem)}
.metrics{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.metric{min-width:88px;padding:10px 14px;border-radius:16px;background:#f5f9f8;border:1px solid var(--line)}
.metric-label{display:block;font-size:.75rem;color:var(--muted)}
.metric strong{font-size:1.05rem}
.progress-orb{--p:0;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--teal) calc(var(--p)*1%),#dfeae8 0);position:relative}
.progress-orb::after{content:"";position:absolute;width:48px;height:48px;background:white;border-radius:50%}
.progress-orb span{position:relative;z-index:1;font-weight:950}
.instruction-strip{display:flex;align-items:center;gap:11px;background:linear-gradient(90deg,var(--teal-soft),#f7fbfb);border:1px solid #cce6e2;border-radius:18px;padding:13px 16px;margin:14px 0 20px;color:var(--ink-2)}
.instruction-icon{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:white;color:var(--teal);font-weight:900}

.match-board{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 52px minmax(0,1.15fr);gap:14px;align-items:stretch;padding:18px;background:linear-gradient(180deg,#f9fcfc,#f1f8f7);border:1px solid var(--line);border-radius:28px;overflow:hidden}
.match-board::before{content:"";position:absolute;inset:auto auto -80px -80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(123,104,214,.09),transparent 70%)}
.lines-layer{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:3;overflow:visible}
.match-column{position:relative;z-index:4;min-width:0}
.column-title{display:flex;align-items:center;gap:9px;font-size:.88rem;font-weight:900;color:var(--muted);margin:0 4px 11px}
.column-dot{width:11px;height:11px;border-radius:50%}
.dot-parts{background:var(--purple)}
.dot-functions{background:var(--teal-2)}
.cards-list{display:grid;gap:12px}
.match-card{
  width:100%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.96);
  border-radius:18px;
  min-height:78px;
  padding:13px 14px;
  color:var(--ink);
  display:flex;
  align-items:center;
  gap:12px;
  text-align:right;
  cursor:pointer;
  box-shadow:0 8px 22px rgba(23,82,77,.055);
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease,background .16s ease,opacity .16s ease;
  position:relative;
}
.match-card:hover{transform:translateY(-2px);border-color:#aacbc7;box-shadow:0 12px 28px rgba(23,82,77,.09)}
.match-card.active{border-color:var(--purple);background:var(--purple-soft);box-shadow:0 0 0 3px rgba(123,104,214,.12)}
.function-card.active{border-color:var(--teal);background:var(--teal-soft);box-shadow:0 0 0 3px rgba(11,111,104,.1)}
.match-card.matched{opacity:.72;border-color:#8bd0aa;background:#f0fbf5;cursor:default}
.match-card.matched::after{content:"✓";position:absolute;left:10px;top:10px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#dff6e8;color:#277a4a;font-weight:950}
.card-icon{flex:0 0 44px;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:#f5f6fb;border:1px solid #e6e7f0;overflow:hidden}
.card-icon svg{width:32px;height:32px}
.card-main{min-width:0}
.card-title{display:block;font-weight:950;font-size:1rem;margin-bottom:3px}
.card-sub{display:block;color:var(--muted);font-size:.76rem;line-height:1.45}
.function-card .card-title{font-size:.93rem;line-height:1.55;font-weight:850;margin:0}
.mid-rail{position:relative;z-index:2;display:flex;align-items:center;justify-content:center}
.rail-line{position:absolute;width:3px;height:89%;border-radius:99px;background:linear-gradient(var(--purple),var(--teal-2));opacity:.18}
.rail-node{position:absolute;width:12px;height:12px;border-radius:50%;background:white;border:3px solid #b5d5d1;box-shadow:0 0 0 5px rgba(255,255,255,.8)}
.rail-node:nth-child(2){top:19%}.rail-node:nth-child(3){top:48%}.rail-node:nth-child(4){top:77%}

.connect-line{fill:none;stroke:var(--teal);stroke-width:5;stroke-linecap:round;filter:drop-shadow(0 3px 4px rgba(11,111,104,.18));stroke-dasharray:9 8;animation:dash 1.4s linear infinite}
.connect-line.correct{stroke:#2c9b61;stroke-dasharray:none;animation:lineIn .35s ease both}
.connect-line.wrong{stroke:var(--danger);stroke-dasharray:8 7;animation:wrongPulse .55s ease}
@keyframes dash{to{stroke-dashoffset:-34}}
@keyframes lineIn{from{opacity:0;stroke-width:2}to{opacity:1;stroke-width:5}}
@keyframes wrongPulse{50%{stroke-width:9;opacity:.7}}

.game-footer{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:18px}
.feedback{display:flex;align-items:center;gap:10px;min-height:42px;color:var(--ink-2)}
.feedback-icon{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;background:var(--gold-soft);color:#8a6711}
.feedback.good{color:#26754a}.feedback.bad{color:#a94655}
.game-actions{display:flex;gap:10px;flex-wrap:wrap}

.knowledge-band{display:flex;gap:18px;align-items:center;margin-top:20px;padding:20px 24px;border-radius:24px;background:linear-gradient(135deg,#173f3c,#0e5f5a);color:white;box-shadow:var(--shadow-soft)}
.knowledge-icon{font-size:2rem}
.knowledge-band span{display:block;color:#aee0d9;font-size:.8rem;font-weight:900;margin-bottom:4px}
.knowledge-band strong{line-height:1.7;font-size:.98rem}

footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.82rem;padding:20px 6px 4px}

.modal{border:none;border-radius:28px;padding:0;max-width:min(92vw,460px);box-shadow:0 34px 100px rgba(6,40,38,.28);background:transparent}
.modal::backdrop{background:rgba(7,37,35,.58);backdrop-filter:blur(5px)}
.modal-content{position:relative;background:white;padding:32px;border-radius:28px;text-align:center}
.success-mark{width:74px;height:74px;border-radius:50%;display:grid;place-items:center;margin:0 auto 14px;background:linear-gradient(135deg,#dff8e8,#bdeacb);color:#26754a;font-size:2.2rem;font-weight:950;box-shadow:0 12px 28px rgba(44,155,97,.17)}
.modal-kicker{color:var(--teal);font-weight:900;margin:0 0 6px}
.modal h2{font-size:1.7rem;margin:0 0 10px}
.modal p{color:var(--muted);line-height:1.7}
.final-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0}
.final-stats div{padding:14px;border-radius:16px;background:#f5f9f8}
.final-stats span{display:block;color:var(--muted);font-size:.78rem}.final-stats strong{font-size:1.35rem}
.modal-close{position:absolute;left:16px;top:14px;border:none;background:#f3f6f5;width:36px;height:36px;border-radius:50%;font-size:1.4rem;cursor:pointer}
.install-icon{font-size:2.5rem;margin-bottom:8px}

.spark{position:fixed;width:10px;height:16px;border-radius:3px;z-index:9999;pointer-events:none;animation:fall 1.3s ease-out forwards}
@keyframes fall{to{transform:translate(var(--x),var(--y)) rotate(540deg);opacity:0}}

@media (max-width:820px){
  .page-shell{width:min(100% - 16px,760px);padding-top:10px}
  .hero{grid-template-columns:1fr;padding:26px;border-radius:28px;gap:12px}
  .hero-copy{text-align:right}
  .hero h1{font-size:3.25rem}
  .hero-visual{min-height:245px}
  .cell-art{width:min(88vw,430px)}
  .badge-a{right:1%;bottom:7%}.badge-b{left:1%;top:8%}
  .game-card{padding:16px;border-radius:26px}
  .game-topbar{align-items:flex-start;flex-direction:column}
  .metrics{width:100%}.metric{flex:1}.progress-orb{width:56px;height:56px}
  .match-board{grid-template-columns:minmax(0,.9fr) 30px minmax(0,1.1fr);gap:7px;padding:12px;border-radius:22px}
  .mid-rail{min-width:0}
  .match-card{min-height:88px;padding:11px 10px;gap:8px;border-radius:15px}
  .card-icon{width:36px;height:36px;flex-basis:36px;border-radius:11px}
  .card-icon svg{width:26px;height:26px}
  .card-title{font-size:.9rem}.card-sub{font-size:.68rem}
  .function-card .card-title{font-size:.82rem;line-height:1.5}
  .column-title{font-size:.76rem}
  .game-footer{align-items:stretch;flex-direction:column}
  .game-actions{display:grid;grid-template-columns:1fr 1fr}
  .game-actions .btn{width:100%}
  .knowledge-band{padding:17px}
}
@media (max-width:420px){
  .hero h1{font-size:2.7rem}
  .hero-lead{font-size:.95rem}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr}
  .hero-actions .btn{padding:13px 10px}
  .match-board{grid-template-columns:minmax(0,.83fr) 20px minmax(0,1.17fr);padding:9px;gap:4px}
  .match-card{min-height:96px;padding:9px 8px}
  .card-icon{display:none}
  .card-title{font-size:.82rem}
  .function-card .card-title{font-size:.76rem}
  .metric{padding:9px 10px;min-width:0}.metric strong{font-size:.95rem}
  .progress-orb{width:50px;height:50px}.progress-orb::after{width:38px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}