/* The Wards Academy — Question Bank (mobile app styles)
   Colours and shapes follow the original website. */
:root{
  --navy:#0d2440; --navy-deep:#081a30; --navy-soft:#16365c;
  --teal:#0284c7; --teal-light:#38bdf8; --gold:#c8a04b; --gold-light:#e0c074;
  --paper:#f6f8fb; --card:#ffffff; --ink:#0d2440; --body2:#33485e;
  --grey:#5a6b7d; --line:#e3e9f0; --border:#d3dce6;
  --teal-ink:#0284c7; --teal-bg:#e6f4fc;
  --green:#1f9d57; --green-ink:#1f9d57; --green-bg:#e6f6ec; --green-border:#9ad8b3;
  --red:#cf3b46; --red-ink:#cf3b46; --red-bg:#fbeaec; --red-border:#e8a8ad;
  --orange:#e67e22; --orange-ink:#b85c0d; --orange-bg:#fdefe0; --orange-border:#f3c796;
  --gold-bg:#f8f0dc; --tag-bg:#eaf2fb; --tag-ink:#1d59a8;
  --num-bg:linear-gradient(140deg,#0d2440,#16365c); --solid:#0d2440;
  --key-bg:#f6f8fb; --nav-bg:#ffffff; --nav-ring:#ffffff;
  --shadow-sm:0 1px 3px rgba(13,36,64,.08);
  --shadow:0 6px 20px rgba(13,36,64,.12);
  --radius:14px; --radius-sm:9px;
  --font:"Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
:root[data-theme="dark"]{
  --paper:#081a30; --card:#102b4c; --ink:#eef3f9; --body2:#cdd9e8;
  --grey:#aebfd3; --line:#1f4068; --border:#1f4068;
  --teal-ink:#38bdf8; --teal-bg:rgba(56,189,248,.14);
  --green-ink:#7fe3a8; --green-bg:rgba(31,157,87,.18); --green-border:rgba(31,157,87,.5);
  --red-ink:#f3a3a9; --red-bg:rgba(207,59,70,.18); --red-border:rgba(207,59,70,.5);
  --orange-ink:#f5b26b; --orange-bg:rgba(230,126,34,.18); --orange-border:rgba(230,126,34,.5);
  --gold-bg:rgba(200,160,75,.18); --tag-bg:rgba(56,189,248,.14); --tag-ink:#8fd0f7;
  --num-bg:linear-gradient(140deg,#16365c,#1f4a7a); --solid:#1f4a7a;
  --key-bg:#0d2440; --nav-bg:#0d2440; --nav-ring:#0d2440;
  --shadow-sm:none; --shadow:0 6px 20px rgba(0,0,0,.3);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;height:100%;}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--paper);
  line-height:1.3;font-size:16px;-webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  height:100%;overflow:hidden;overscroll-behavior:none;
}
button,a,summary,input,textarea{touch-action:manipulation;}
h1,h2,h3,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
a{color:var(--teal-ink);}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--gold);outline-offset:2px;}
.hidden{display:none !important;}

.app{max-width:560px;margin:0 auto;height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--paper);position:relative;overflow:hidden;}
/* App shell: the header and the bottom bar never move; only the middle part scrolls.
   (With a scrolling page, phone browsers hide/show their own toolbars and eat taps on the bottom bar.) */
.app > header,.app > nav,.app > .q-nav{flex:none;}
@media(min-width:600px){
  body{background:#e9eef4;}
  :root[data-theme="dark"] body{background:#05111f;}
  .app{box-shadow:0 0 40px rgba(13,36,64,.14);}
}
main{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;padding:16px 16px 34px;display:flex;flex-direction:column;gap:14px;min-width:0;}
main > *,.pad > *{flex-shrink:0;}
main.has-nav{padding-bottom:42px;}
main.flush{padding:0;gap:0;}
.pad{padding:16px 16px 34px;display:flex;flex-direction:column;gap:14px;min-width:0;}
main.has-nav .pad{padding-bottom:42px;}

/* ---------- headers ---------- */
.hd,.hd-home{
  background:linear-gradient(120deg,var(--navy-deep),var(--navy) 60%,var(--navy-soft));color:#fff;
  box-shadow:var(--shadow);
}
.hd{
  position:relative;z-index:20;display:flex;align-items:center;gap:8px;min-height:68px;
  padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top));
}
.hd.has-back{padding-left:6px;gap:2px;}
.hd-back{width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:#fff;flex:none;border-radius:10px;}
.hd-title{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px;}
.hd-title h1{font-size:21px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hd-title.small h1{font-size:18px;}
.hd-sub{font-size:12px;color:#aebfd3;font-weight:600;}
.hd-brand{display:flex;align-items:center;gap:9px;flex:none;}
.hd-brand-txt{display:flex;flex-direction:column;align-items:flex-end;gap:2px;font-size:9.5px;letter-spacing:.5px;text-transform:uppercase;color:#aebfd3;line-height:1.25;white-space:nowrap;}
.hd-logo{width:42px;height:42px;border-radius:50%;object-fit:cover;box-shadow:0 2px 6px rgba(0,0,0,.28);}
.hd-home{padding:22px 20px 24px;padding-top:calc(22px + env(safe-area-inset-top));}
.hd-home .brand{display:flex;align-items:center;gap:18px;}
.hd-home .brand img{width:88px;height:88px;border-radius:50%;object-fit:cover;flex:none;box-shadow:0 4px 14px rgba(0,0,0,.35);}
.hd-home .brand > div{min-width:0;}
.hd-home .brand b{display:block;font-size:27px;font-weight:700;letter-spacing:.2px;line-height:1.15;margin-bottom:7px;}
.hd-home .brand small{display:block;margin-top:3px;font-size:12.5px;font-weight:600;letter-spacing:.9px;text-transform:uppercase;color:#aebfd3;line-height:1.35;}

/* ---------- progress bars ---------- */
.bar{height:9px;border-radius:999px;background:var(--line);overflow:hidden;}
.bar > i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal),var(--teal-light));transition:width .35s ease;}
.bar.on-navy{background:rgba(255,255,255,.16);}
.prog-label{display:flex;justify-content:space-between;font-size:13px;color:var(--grey);margin-top:6px;font-weight:600;}
.bar.thin{height:5px;} .bar.mid{height:7px;}
.bar > i.green{background:var(--green);} .bar > i.red{background:var(--red);} .bar > i.orange{background:var(--orange);}

/* ---------- buttons ---------- */
.btn{
  display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;
  border-radius:var(--radius-sm);border:none;font-family:inherit;font-weight:600;font-size:15px;
  text-decoration:none;text-align:center;transition:transform .12s ease,box-shadow .15s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:linear-gradient(135deg,var(--teal-light),var(--teal));color:#fff;box-shadow:0 4px 14px rgba(2,132,199,.32);}
.btn-navy{background:var(--solid);color:#fff;}
.btn-gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#3a2c08;box-shadow:0 4px 14px rgba(200,160,75,.3);}
.btn-ghost{background:var(--card);color:var(--ink);border:1.5px solid var(--border);}
.btn-danger{background:var(--red);color:#fff;}
.btn-lg{font-size:16px;}
.btn-sm{min-height:44px;font-size:14px;padding:0 16px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-row{display:flex;gap:10px;}
.btn-row > *{flex:1 1 0;min-width:0;}

/* ---------- cards & pills ---------- */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);}
.chap-card{
  position:relative;overflow:hidden;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px 20px 20px 24px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-sm);
  text-decoration:none;color:var(--ink);
}
.chap-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(var(--teal-light),var(--teal));}
.chap-card .top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;}
.chap-card h3{font-size:17px;font-weight:700;}
.chap-card .meta{display:flex;flex-wrap:wrap;gap:8px;}
.chap-card .go{margin-top:4px;}
.chap-card.placeholder{opacity:.62;}
.chap-card.placeholder::before{background:var(--border);}
.chap-card.placeholder .num{background:var(--line);color:var(--grey);}
.num{width:44px;height:44px;border-radius:11px;flex:none;display:flex;align-items:center;justify-content:center;background:var(--num-bg);color:#fff;font-weight:800;font-size:17px;}
.pill{display:inline-block;background:var(--teal-bg);color:var(--teal-ink);font-weight:700;padding:3px 10px;border-radius:999px;font-size:12px;}
.pill.green{background:var(--green-bg);color:var(--green-ink);}
.pill.grey{background:var(--line);color:var(--grey);}
.kicker{color:var(--teal-ink);font-weight:700;letter-spacing:1px;text-transform:uppercase;font-size:12px;}
.sec-head{display:flex;flex-direction:column;gap:5px;}
.sec-head h2{font-size:22px;font-weight:700;line-height:1.25;}
.sec-head p{font-size:14px;line-height:1.5;color:var(--grey);}
.part-title{display:flex;align-items:center;gap:10px;margin-top:4px;}
.part-title .lbl{background:var(--solid);color:#fff;font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.5px;flex:none;}
.part-title .tag{font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:3px 10px;border-radius:6px;background:var(--tag-bg);color:var(--tag-ink);flex:none;}
.part-title .line{flex:1;height:1px;background:var(--border);}
/* a part = its label + its chapters (stacked on phones, side by side on tablets) */
.parts,.part,.part-cards{display:flex;flex-direction:column;gap:14px;min-width:0;}

/* topic cards: same design as chapter cards, smaller */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.topic-card{border-radius:12px;padding:12px 10px 12px 14px;gap:9px;}
.topic-card::before{width:4px;}
.topic-card .top{gap:6px;}
.topic-card .num{width:34px;height:34px;border-radius:9px;font-size:14px;}
.topic-card .pill{padding:3px 8px;font-size:11.5px;}
.topic-card h3{font-size:14px;line-height:1.3;min-height:36px;}
.topic-card .bar{margin-top:auto;}
.topic-card .go{margin-top:0;min-height:38px;font-size:13px;padding:0 6px;}

/* ---------- home ---------- */
.continue .row{display:flex;align-items:center;gap:12px;}
.continue .txt{display:flex;flex-direction:column;gap:5px;align-items:flex-start;min-width:0;}
.continue h2{font-size:19px;font-weight:700;}
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.tile{padding:14px;display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-height:44px;}
.tile .ic{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;flex:none;}
.tile .ic.red{background:var(--red-bg);color:var(--red-ink);}
.tile .ic.gold{background:var(--gold-bg);color:var(--gold);}
.tile b{display:block;font-size:15px;font-weight:700;}
.tile small{display:block;margin-top:2px;font-size:13px;color:var(--grey);}
.panel{padding:16px 16px 4px;display:flex;flex-direction:column;}
.panel-head{display:flex;flex-direction:column;gap:3px;padding-bottom:12px;}
.panel-head h2{font-size:17px;font-weight:700;}
.panel-head p{font-size:12.5px;color:var(--grey);}
.panel-empty{font-size:14px;color:var(--grey);padding:0 0 14px;line-height:1.5;}
.weak{display:flex;flex-direction:column;gap:9px;padding:12px 0;text-decoration:none;color:var(--ink);border-top:1px solid var(--line);}
.weak .row{display:flex;align-items:center;gap:8px;}
.weak .name{flex:1;min-width:0;font-size:15px;font-weight:700;}
.weak .pc{font-size:16px;font-weight:800;min-width:40px;text-align:right;}
.weak .arrow{font-size:16px;color:var(--grey);}
.lvl{font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px;border:1px solid;flex:none;}
.lvl.poor{color:var(--red-ink);background:var(--red-bg);border-color:var(--red-border);}
.lvl.weak-l{color:var(--orange-ink);background:var(--orange-bg);border-color:var(--orange-border);}
.pc.poor{color:var(--red-ink);} .pc.weak-l{color:var(--orange-ink);}
.install{display:flex;align-items:center;gap:10px;background:var(--teal-bg);border-left:5px solid var(--teal);border-radius:10px;padding:10px 6px 10px 14px;}
.install .txt{flex:1;min-width:0;}
.install b{display:block;font-size:14px;font-weight:700;}
.install small{display:block;margin-top:2px;font-size:13px;color:var(--body2);}
.icon-btn{width:44px;height:44px;border:none;background:transparent;color:var(--grey);display:flex;align-items:center;justify-content:center;padding:0;border-radius:10px;flex:none;}

/* ---------- bottom navigation ---------- */
.tabbar{
  position:relative;z-index:30;display:flex;align-items:flex-end;background:var(--nav-bg);
  border-top:1px solid var(--line);padding:8px 6px;padding-bottom:calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(13,36,64,.08);
}
.tabbar a{flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:48px;text-decoration:none;color:var(--grey);font-size:11px;font-weight:600;}
.tabbar a.on{color:var(--teal-ink);font-weight:700;}
.tabbar a.main{margin-top:-34px;color:var(--ink);font-weight:700;justify-content:flex-start;}
.tabbar a.main.on{color:var(--teal-ink);}
.tabbar a.main .fab{
  width:62px;height:62px;border-radius:50%;border:4px solid var(--nav-ring);
  background:linear-gradient(135deg,var(--teal-light),var(--teal));color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(2,132,199,.42);
}

/* ---------- practice ---------- */
.practice-head{background:var(--card);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);padding:12px 16px;display:flex;flex-direction:column;gap:10px;}
.chips{display:flex;gap:8px;flex-wrap:wrap;}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--paper);border:1px solid var(--border);padding:5px 11px;border-radius:999px;font-weight:600;font-size:12.5px;}
.chip .dot{width:9px;height:9px;border-radius:50%;}
.chip.score{background:var(--teal-bg);border-color:var(--teal);color:var(--teal-ink);}
.pad.practice{padding:16px 14px 20px;}
.q-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 16px 18px;display:flex;flex-direction:column;gap:14px;}
.q-tagline{display:flex;align-items:center;gap:8px;}
.q-pill{font-size:11.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;padding:4px 10px;border-radius:6px;background:var(--teal-bg);color:var(--teal-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;}
.q-pill.idx{background:var(--solid);color:#fff;flex:none;}
.q-tagline .sp{flex:1;}
.save-btn{width:44px;height:44px;border-radius:9px;border:1.5px solid var(--border);background:var(--card);color:var(--ink);display:flex;align-items:center;justify-content:center;padding:0;flex:none;}
.save-btn.on{color:var(--gold);border-color:var(--gold);background:var(--gold-bg);}
.save-btn.on svg{fill:currentColor;}
.q-text{font-size:17px;line-height:1.5;font-weight:600;overflow-wrap:anywhere;}
.related{border:1px dashed var(--border);border-radius:10px;padding:0 12px;font-size:14px;color:var(--body2);}
.related summary{cursor:pointer;padding:10px 0;font-weight:600;color:var(--teal-ink);min-height:44px;display:flex;align-items:center;}
.related p{padding:0 0 12px;line-height:1.5;}
.options{display:flex;flex-direction:column;gap:10px;}
.opt{
  display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;min-height:52px;
  background:var(--card);border:1.6px solid var(--border);border-radius:12px;padding:11px 13px;
  font-family:inherit;font-size:15.5px;line-height:1.4;color:var(--ink);transition:border-color .14s,background .14s;
}
.opt .key{width:30px;height:30px;border-radius:8px;flex:none;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;background:var(--key-bg);border:1.5px solid var(--border);color:var(--ink);}
.opt .label{flex:1;min-width:0;padding-top:4px;overflow-wrap:anywhere;}
.opt .state{font-size:12.5px;font-weight:700;align-self:center;flex:none;padding:3px 9px;border-radius:6px;}
@media(hover:hover){.opt:not(:disabled):hover{border-color:var(--teal);background:var(--teal-bg);}}
.opt:not(:disabled):active{transform:scale(.995);}
.opt:disabled{cursor:default;}
.opt.correct{border-color:var(--green-border);background:var(--green-bg);}
.opt.correct .key{background:var(--green);border-color:var(--green);color:#fff;}
.opt.correct .state{color:var(--green-ink);background:rgba(31,157,87,.12);}
.opt.wrong{border-color:var(--red-border);background:var(--red-bg);}
.opt.wrong .key{background:var(--red);border-color:var(--red);color:#fff;}
.opt.wrong .state{color:var(--red-ink);background:rgba(207,59,70,.12);}
.opt.dim{opacity:.7;}
.feedback{border-radius:12px;padding:14px 16px;border:1px solid;display:flex;flex-direction:column;gap:7px;animation:fade .25s ease;}
@keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}
.feedback.ok{background:var(--green-bg);border-color:var(--green-border);}
.feedback.no{background:var(--red-bg);border-color:var(--red-border);}
.feedback .verdict{font-weight:800;display:flex;align-items:center;gap:8px;font-size:16px;}
.feedback.ok .verdict{color:var(--green-ink);} .feedback.no .verdict{color:var(--red-ink);}
.feedback .ans-line{font-size:14.5px;}
.feedback .ans-line b{color:var(--teal-ink);}
.feedback .exp{font-size:15px;line-height:1.5;color:var(--body2);overflow-wrap:anywhere;}
.note-box{background:var(--gold-bg);border-left:4px solid var(--gold);border-radius:8px;padding:10px 12px;font-size:14px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;}
.note-box b{display:block;font-size:11.5px;letter-spacing:.6px;text-transform:uppercase;margin-bottom:3px;}
.q-nav{
  position:relative;z-index:30;display:flex;gap:12px;background:var(--nav-bg);border-top:1px solid var(--line);
  padding:12px 16px;padding-bottom:calc(16px + env(safe-area-inset-bottom));box-shadow:0 -6px 20px rgba(13,36,64,.08);
}
.q-nav > *{flex:1 1 0;min-height:52px;}

/* ---------- results / stats ---------- */
.hero{
  background:linear-gradient(125deg,var(--navy-deep),var(--navy) 60%,var(--navy-soft));color:#fff;border-radius:var(--radius);
  padding:20px 18px;display:flex;gap:18px;align-items:center;box-shadow:var(--shadow);
}
.ring{position:relative;width:116px;height:116px;flex:none;}
.ring svg{display:block;}
.ring .pct{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;}
.ring .pct b{font-size:28px;line-height:1;font-weight:700;}
.ring .pct small{font-size:10.5px;color:#9fb2c8;letter-spacing:.5px;}
.hero .meta{display:flex;flex-direction:column;gap:8px;align-items:flex-start;min-width:0;flex:1;}
.hero h2{font-size:20px;font-weight:700;}
.badge-chap{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--gold-light);font-size:10.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;padding:4px 10px;border-radius:999px;}
.perf{font-weight:800;font-size:14px;padding:6px 14px;border-radius:999px;border:1px solid;}
.perf.excellent{background:rgba(31,157,87,.18);color:#7fe3a8;border-color:rgba(31,157,87,.5);}
.perf.good{background:rgba(200,160,75,.18);color:var(--gold-light);border-color:rgba(200,160,75,.5);}
.perf.needs{background:rgba(207,59,70,.18);color:#f3a3a9;border-color:rgba(207,59,70,.5);}
.hero .sub{font-size:13.5px;color:#cdd9e8;line-height:1.45;}
.stat-cards{display:grid;gap:10px;}
.stat-cards.c3{grid-template-columns:repeat(3,minmax(0,1fr));}
.stat-cards.c4{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;}
.stat-card{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 6px 12px;text-align:center;box-shadow:var(--shadow-sm);}
.stat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--c);}
.stat-card b{display:block;font-size:26px;font-weight:700;line-height:1;margin-bottom:5px;color:var(--c);}
.stat-card small{color:var(--grey);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;}
.stat-cards.c4 .stat-card small{font-size:10px;letter-spacing:.2px;}
.sc-total{--c:var(--ink);} .sc-correct{--c:var(--green-ink);} .sc-wrong{--c:var(--red-ink);} .sc-left{--c:var(--grey);}
.review-wrap{overflow:hidden;display:flex;flex-direction:column;}
.review-wrap .rh{padding:16px 16px 14px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:12px;}
.review-wrap .rh h2{font-size:18px;font-weight:700;}
.filters{display:flex;gap:8px;flex-wrap:wrap;}
.rv{padding:14px 16px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);}
.rv:last-child{border-bottom:none;}
.rv .r1{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.rv .r1 b{font-size:14px;}
.rv p{font-size:14px;line-height:1.45;color:var(--body2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rv .r3{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;color:var(--grey);}
.rv .r3 .more{font-weight:700;color:var(--teal-ink);flex:none;}
.st{font-weight:700;font-size:12.5px;padding:4px 9px;border-radius:6px;white-space:nowrap;}
.st-correct{background:var(--green-bg);color:var(--green-ink);}
.st-wrong{background:var(--red-bg);color:var(--red-ink);}
.st-left{background:var(--line);color:var(--grey);}
.empty{padding:22px 16px;text-align:center;color:var(--grey);font-size:14px;line-height:1.5;}
.acc-row{display:flex;flex-direction:column;gap:8px;padding:11px 0;text-decoration:none;color:var(--ink);border-top:1px solid var(--line);}
.acc-row .row{display:flex;align-items:center;gap:8px;}
.acc-row .name{flex:1;min-width:0;font-size:14.5px;font-weight:600;}
.acc-row .pc{font-size:15px;font-weight:800;min-width:38px;text-align:right;}
.chart-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;}
.chart-head h2{font-size:17px;font-weight:700;}
.chart-head span{font-size:12.5px;color:var(--grey);}
.chart{display:flex;align-items:flex-end;gap:10px;height:130px;}
.chart .col{flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%;}
.chart .v{font-size:12px;font-weight:700;}
.chart .b{width:100%;background:linear-gradient(var(--teal-light),var(--teal));border-radius:5px 5px 2px 2px;min-height:3px;}
.chart .b.zero{background:var(--border);}
.chart .col.today .b{background:var(--num-bg);}
.chart .d{font-size:11px;font-weight:600;color:var(--grey);}
.chart .col.today .d{font-weight:700;color:var(--ink);}

/* ---------- review tab ---------- */
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--teal-ink);}
.input{min-height:48px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:var(--card);color:var(--ink);font-family:inherit;font-size:16px;padding:0 14px;box-shadow:var(--shadow-sm);width:100%;}
textarea.input{padding:12px 14px;min-height:120px;resize:vertical;line-height:1.5;}
.seg{display:flex;gap:8px;}
.seg > *{flex:1 1 0;min-height:46px;font-size:14px;padding:0 8px;}
.cta{background:linear-gradient(125deg,var(--navy-deep),var(--navy) 60%,var(--navy-soft));color:#fff;border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow);}
.cta h2{font-size:18px;font-weight:700;}
.cta p{margin-top:5px;font-size:13.5px;line-height:1.45;color:#cdd9e8;}
.list{overflow:hidden;display:flex;flex-direction:column;}
.list-row{display:flex;align-items:center;gap:12px;padding:10px 14px;min-height:56px;text-decoration:none;color:var(--ink);border:none;border-bottom:1px solid var(--line);background:transparent;font-family:inherit;text-align:left;width:100%;}
.list-row:last-child{border-bottom:none;}
.list-row .name{flex:1;min-width:0;font-size:15px;font-weight:600;}
.list-row .name small{display:block;margin-top:2px;font-size:12.5px;font-weight:400;color:var(--grey);}
.list-row .cnt{font-size:12.5px;font-weight:700;color:var(--red-ink);background:var(--red-bg);border-radius:6px;padding:4px 9px;}
.list-row .arrow{font-size:16px;color:var(--grey);}
.list-row.danger .name{color:var(--red-ink);}
.group-title{font-size:12px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--grey);margin-top:4px;}

/* ---------- account ---------- */
.switch{width:46px;height:28px;border-radius:999px;background:var(--border);padding:3px;display:flex;flex:none;transition:background .15s;}
.switch i{width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(13,36,64,.3);transition:transform .15s;}
.switch.on{background:var(--teal);} .switch.on i{transform:translateX(18px);}
.disclaimer{font-size:13px;line-height:1.5;color:var(--grey);padding:14px 16px;background:var(--card);border:1px dashed var(--border);border-radius:10px;}
.foot{text-align:center;font-size:12.5px;color:var(--grey);line-height:1.6;}
.acct p{font-size:14px;line-height:1.5;color:var(--grey);}

/* ---------- splash, loading, modal, toast ---------- */
.splash{
  position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  background:linear-gradient(125deg,#081a30,#0d2440 55%,#16365c);color:#fff;padding:48px 28px;text-align:center;overflow:hidden;
}
.splash::before{content:"";position:absolute;right:-110px;top:-110px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(2,132,199,.35),transparent 70%);}
.splash::after{content:"";position:absolute;left:-90px;bottom:-110px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(200,160,75,.18),transparent 70%);}
.splash img{position:relative;width:184px;height:184px;border-radius:50%;box-shadow:0 14px 40px rgba(0,0,0,.35);}
.splash h1{position:relative;font-size:34px;font-weight:700;letter-spacing:.2px;}
.splash .by{position:relative;margin-top:10px;font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:#aebfd3;}
.splash .gold-pill{position:relative;display:inline-block;margin-top:18px;background:rgba(200,160,75,.16);border:1px solid rgba(224,192,116,.45);color:#e0c074;font-size:11.5px;font-weight:600;letter-spacing:.5px;padding:6px 14px;border-radius:999px;text-transform:uppercase;}
.splash .msg{position:relative;font-size:14px;color:#cdd9e8;line-height:1.5;max-width:300px;}
.splash .btn{position:relative;}
.loading{flex:1;display:flex;align-items:center;justify-content:center;padding:60px 0;color:var(--grey);font-size:14px;gap:10px;}
.spinner{width:22px;height:22px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--teal);animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.modal-back{position:fixed;inset:0;z-index:200;background:rgba(8,26,48,.55);display:flex;align-items:flex-end;justify-content:center;}
.modal{
  width:100%;max-width:560px;background:var(--card);color:var(--ink);border-radius:18px 18px 0 0;
  padding:20px 18px;padding-bottom:calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:14px;
  max-height:88vh;overflow-y:auto;animation:up .2s ease;
}
@keyframes up{from{transform:translateY(30px);opacity:0;}to{transform:none;opacity:1;}}
.modal h2{font-size:19px;font-weight:700;}
.modal p{font-size:14.5px;line-height:1.5;color:var(--body2);}
.modal ol{margin:0;padding-left:20px;font-size:14.5px;line-height:1.7;color:var(--body2);}

/* ---------- Arabic text (install guide) ---------- */
@font-face{font-family:"Cairo";font-style:normal;font-weight:400 800;font-display:swap;src:url(fonts/cairo-arabic.woff2) format("woff2");
  unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0897-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC;}
@font-face{font-family:"Cairo";font-style:normal;font-weight:400 800;font-display:swap;src:url(fonts/cairo-latin.woff2) format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2212,U+2215,U+FEFF,U+FFFD;}
.ar{font-family:"Cairo",var(--font);direction:rtl;text-align:right;display:flex;flex-direction:column;gap:14px;}
.ar h2{font-size:21px;font-weight:800;line-height:1.5;}
.ar p{font-size:15px;line-height:1.8;}
.ar section{display:flex;flex-direction:column;gap:10px;}
.ar h3{font-size:14px;font-weight:700;color:var(--teal-ink);display:flex;align-items:center;gap:10px;}
.ar h3::after{content:"";flex:1;height:1px;background:var(--line);}
.modal .ar-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;counter-reset:step;}
.ar-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:12px;background:var(--key-bg);border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-size:15px;line-height:1.75;color:var(--body2);}
.ar-steps li::before{content:counter(step);flex:none;width:28px;height:28px;border-radius:50%;background:var(--num-bg);color:#fff;font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;line-height:1;}
.ar-steps li > span.t{flex:1;min-width:0;}
.ar-steps b,.ar p b{color:var(--ink);font-weight:700;}
.ar-ic{display:inline-block;vertical-align:-3px;color:var(--teal-ink);margin:0 2px;}
.ar .en{display:inline-block;font-size:12.5px;font-weight:600;color:var(--grey);background:var(--card);border:1px solid var(--line);border-radius:6px;padding:0 7px;line-height:1.7;margin:0 2px;white-space:nowrap;}
.ar-dots{display:inline-block;font-weight:800;color:var(--teal-ink);padding:0 3px;}
.ar-note{background:var(--gold-bg);border-right:4px solid var(--gold);border-radius:10px;padding:10px 12px;font-size:13.5px !important;}
.ar .btn{font-family:inherit;font-size:16px;font-weight:700;}
.toast{
  position:fixed;left:50%;bottom:calc(96px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:300;
  background:#0d2440;color:#fff;border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:10px 18px;font-size:14px;font-weight:600;
  box-shadow:0 6px 20px rgba(0,0,0,.3);max-width:calc(100% - 32px);text-align:center;animation:fade .2s ease;
}
@media(prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important;}}

/* ---------- small phones ---------- */
.hd-sub{white-space:nowrap;}
.topic-card .pill{white-space:nowrap;}
@media(max-width:359px){
  .hd-home .brand{gap:14px;}
  .hd-home .brand img{width:76px;height:76px;}
  .hd-home .brand b{font-size:23px;}
  .hd-home .brand small{font-size:11.5px;letter-spacing:.6px;}
  .hd-brand-txt{display:none;}
  .topic-card .go{font-size:12px;white-space:nowrap;}
  .topic-card .pill{font-size:11px;padding:3px 7px;}
  .q-text{font-size:16px;}
}

/* ---------- tablets and wide screens: the app uses the whole screen ---------- */
@media(min-width:720px){
  :root{--gut:max(24px,calc((100vw - 1180px) / 2));}
  .app{max-width:none;box-shadow:none;}
  main{padding:22px var(--gut) 40px;gap:18px;}
  main.has-nav{padding-bottom:48px;}
  .pad{padding:22px var(--gut) 40px;gap:18px;}
  main.has-nav .pad{padding-bottom:48px;}
  main > .btn{align-self:flex-start;min-width:300px;}

  .hd{min-height:76px;padding-left:var(--gut);padding-right:var(--gut);}
  .hd.has-back{padding-left:calc(var(--gut) - 10px);}
  .hd-title h1{font-size:24px;}
  .hd-title.small h1{font-size:20px;}
  .hd-sub{font-size:13px;}
  .hd-brand{gap:11px;}
  .hd-brand-txt{font-size:11px;}
  .hd-logo{width:48px;height:48px;}
  .hd-home{padding:30px var(--gut) 32px;padding-top:calc(30px + env(safe-area-inset-top));}
  .hd-home .brand{gap:22px;}
  .hd-home .brand img{width:104px;height:104px;}
  .hd-home .brand b{font-size:32px;}
  .hd-home .brand small{font-size:13.5px;}

  /* home: two columns */
  .pad.home{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;}
  .pad.home > .continue,.pad.home > .tiles{grid-column:1;}
  .pad.home > .panel{grid-column:2;grid-row:1 / span 2;align-self:stretch;}
  .pad.home > .install{grid-column:1 / -1;}

  /* chapters and topics: as many columns as fit */
  .sec-head h2{font-size:26px;}
  .sec-head p{font-size:15px;}
  .parts{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;align-items:start;}
  .part:only-child{max-width:560px;}
  .part.multi{grid-column:1 / -1;max-width:none;}
  .part.multi .part-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;}
  .chap-card h3{font-size:19px;}
  .topic-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
  .topic-card{padding:14px 12px 14px 16px;}
  .topic-card h3{font-size:15px;min-height:40px;}

  /* question */
  .practice-head{padding:14px var(--gut);}
  .pad.practice{padding:22px var(--gut) 28px;}
  .q-card{padding:24px 26px 26px;gap:18px;}
  .q-text{font-size:19px;}
  .opt{font-size:16.5px;padding:13px 16px;}
  .feedback{padding:16px 20px;}
  .feedback .exp{font-size:16px;line-height:1.6;}
  .pad.practice > .btn{align-self:flex-start;min-width:220px;}
  .q-nav{padding-left:var(--gut);padding-right:var(--gut);justify-content:space-between;}
  .q-nav > *{flex:0 1 280px;}

  /* results, statistics, account: two columns */
  /* rows keep their full height (max-content): a row must never be squeezed to fit the screen, the page scrolls instead */
  main.v-results,main.v-stats,main.v-account{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:max-content;align-content:start;}
  main.v-results > .review-wrap{grid-column:1 / -1;}
  main.v-results > .btn{min-width:0;align-self:stretch;}
  .hero{padding:24px;}
  .stat-card{display:flex;flex-direction:column;justify-content:center;}
  .stat-card b{font-size:32px;}
  .stat-cards.c4{gap:10px;}
  .stat-cards.c4 .stat-card small{font-size:11px;letter-spacing:.4px;}
  main.v-stats > .chart-card{align-self:start;}
  main.v-account > .acct{grid-column:1;grid-row:1 / span 2;align-self:start;}
  main.v-account > .part-title{grid-column:2;margin-top:0;}
  main.v-account > .list{grid-column:2;}
  main.v-account > .disclaimer,main.v-account > .foot{grid-column:1 / -1;}

  /* review */
  .seg{max-width:560px;}
  .cta{flex-direction:row;align-items:center;justify-content:space-between;gap:24px;padding:22px 24px;}
  .cta .btn{flex:none;min-width:240px;}

  /* bottom bar and dialogs */
  .tabbar{justify-content:center;padding-left:var(--gut);padding-right:var(--gut);}
  .tabbar a{flex:0 1 150px;font-size:12px;}
  .modal-back{align-items:center;padding:24px;}
  .modal{border-radius:18px;max-width:540px;max-height:86vh;padding:24px;}
}