/* OWMGS PromoPrep — GES Promotion Exam Study Centre */
:root{
  --green:#0b6e4f; --green-d:#08533b; --green-l:#e6f4ee;
  --gold:#f2b705; --gold-l:#fff6d6; --red:#c8102e; --red-l:#fde8eb;
  --bg:#f4f7f5; --card:#ffffff; --text:#14231c; --muted:#5d6f66; --line:#dfe7e2;
  --shadow:0 2px 10px rgba(10,40,25,.08); --radius:14px; --link:#0b6e4f;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0e1814; --card:#16231d; --text:#e8f1ec; --muted:#9db3a8; --line:#24372e;
    --green-l:#123327; --gold-l:#3a3110; --red-l:#3a1419; --shadow:0 2px 10px rgba(0,0,0,.4); color-scheme:dark; --link:#5fd4a8;
  }
}
:root[data-theme="dark"]{
  --bg:#0e1814; --card:#16231d; --text:#e8f1ec; --muted:#9db3a8; --line:#24372e;
  --green-l:#123327; --gold-l:#3a3110; --red-l:#3a1419; --shadow:0 2px 10px rgba(0,0,0,.4); color-scheme:dark; --link:#5fd4a8;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent}
a{color:var(--link)}
h1,h2,h3{margin:.2em 0 .5em;line-height:1.25}
h2{font-size:1.3rem} h3{font-size:1.05rem}
button,input,select,textarea{font:inherit;color:inherit}
.hidden{display:none!important}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:linear-gradient(90deg,var(--green-d),var(--green));color:#fff;display:flex;align-items:center;gap:10px;padding:10px 16px;box-shadow:var(--shadow)}
.topbar .brand{font-weight:700;font-size:1.05rem;flex:1;display:flex;align-items:center;gap:8px;cursor:pointer;min-width:0}
.topbar .brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logo{width:32px;height:32px;border-radius:9px;background:var(--gold);color:var(--green-d);display:grid;place-items:center;font-weight:800;font-size:.85rem;flex:none}
.iconbtn{background:rgba(255,255,255,.15);border:0;color:#fff;width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:1.1rem;flex:none}
.badge{font-size:.72rem;padding:3px 8px;border-radius:20px;font-weight:600;white-space:nowrap}
.badge.free{background:rgba(255,255,255,.2);color:#fff}
.badge.pro{background:var(--gold);color:var(--green-d)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:100;display:none}
.drawer.open{display:block}
.drawer .shade{position:absolute;inset:0;background:rgba(0,0,0,.45)}
.drawer nav{position:absolute;left:0;top:0;bottom:0;width:min(290px,85vw);background:var(--card);overflow-y:auto;padding:16px 10px;box-shadow:var(--shadow)}
.drawer nav .who{padding:8px 10px 14px;border-bottom:1px solid var(--line);margin-bottom:8px}
.drawer nav a{display:flex;gap:12px;align-items:center;padding:11px 12px;border-radius:10px;text-decoration:none;color:var(--text);font-weight:500}
.drawer nav a:hover,.drawer nav a.active{background:var(--green-l);color:var(--green)}

/* ---------- layout ---------- */
main{max-width:980px;margin:0 auto;padding:16px 16px 96px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:14px;border:1px solid var(--line)}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:640px){.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:380px){.g2,.g3{grid-template-columns:1fr}}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{justify-content:space-between}
.muted{color:var(--muted)} .small{font-size:.85rem}
.center{text-align:center}

/* ---------- bottom nav ---------- */
.bottomnav{position:fixed;bottom:0;left:0;right:0;z-index:40;background:var(--card);border-top:1px solid var(--line);display:flex;justify-content:space-around;padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
.bottomnav a{flex:1;text-align:center;text-decoration:none;color:var(--muted);font-size:.72rem;padding:4px 0;border-radius:10px}
.bottomnav a b{display:block;font-size:1.25rem;font-weight:400}
.bottomnav a.active{color:var(--green);font-weight:600}

/* ---------- buttons/forms ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;padding:11px 18px;font-weight:600;cursor:pointer;background:var(--green);color:#fff;text-decoration:none;transition:transform .05s}
.btn:active{transform:scale(.98)}
.btn.gold{background:var(--gold);color:#2a2000}
.btn.ghost{background:transparent;color:var(--green);border:1.5px solid var(--green)}
.btn.red{background:var(--red)}
.btn.sm{padding:7px 12px;font-size:.85rem}
.btn.block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
label{display:block;font-size:.85rem;font-weight:600;margin:10px 0 4px}
input,select,textarea{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--green)}
textarea{min-height:110px;resize:vertical}

/* ---------- hero / tiles ---------- */
.hero{background:linear-gradient(135deg,var(--green-d),var(--green) 60%,#139166);color:#fff;border-radius:18px;padding:18px;margin-bottom:14px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;background:rgba(242,183,5,.25)}
.hero>*{position:relative;z-index:1}
.hero:after{z-index:0}
.hero h2{margin:0 0 4px}
.hero .stats{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;position:relative;z-index:1}
.hero .stat{background:rgba(255,255,255,.14);border-radius:12px;padding:8px 12px;min-width:80px}
.hero .stat b{display:block;font-size:1.25rem}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;cursor:pointer;box-shadow:var(--shadow);text-align:left;display:block;width:100%;color:var(--text);text-decoration:none}
.tile:hover{border-color:var(--green)}
.tile .ic{font-size:1.6rem}
.tile b{display:block;margin-top:6px}
.tile small{color:var(--muted)}
.lock{font-size:.7rem;background:var(--gold-l);color:#7a5b00;padding:2px 7px;border-radius:10px;margin-left:6px;font-weight:600}
:root[data-theme="dark"] .lock{color:var(--gold)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .lock{color:var(--gold)}}

/* ---------- quiz ---------- */
.qhead{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}
.qtext{font-size:1.06rem;font-weight:600;margin:6px 0 14px}
.opt{display:block;width:100%;text-align:left;padding:12px 14px;margin:8px 0;border:1.5px solid var(--line);border-radius:12px;background:var(--card);cursor:pointer;color:var(--text)}
.opt:hover{border-color:var(--green)}
.opt .k{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:7px;background:var(--green-l);color:var(--green);font-weight:700;margin-right:10px;font-size:.85rem}
.opt.sel{border-color:var(--green);background:var(--green-l)}
.opt.ok{border-color:#1a9e5a;background:#e3f7ec;color:#0c4f2c}
.opt.bad{border-color:var(--red);background:var(--red-l)}
:root[data-theme="dark"] .opt.ok{background:#12402a;color:#c9f3dc}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .opt.ok{background:#12402a;color:#c9f3dc}}
.explain{background:var(--gold-l);border-left:4px solid var(--gold);padding:10px 12px;border-radius:8px;margin-top:10px;font-size:.92rem}
.progress{height:8px;background:var(--line);border-radius:10px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--green);border-radius:10px;transition:width .3s}
.timer{font-weight:700;font-variant-numeric:tabular-nums;background:var(--green-l);color:var(--green);padding:5px 10px;border-radius:9px}
.timer.warn{background:var(--red-l);color:var(--red)}
.navgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr));gap:6px;margin-top:10px}
.navgrid button{border:1.5px solid var(--line);background:var(--card);border-radius:8px;padding:6px 0;cursor:pointer;font-size:.8rem;color:var(--text)}
.navgrid button.done{background:var(--green);color:#fff;border-color:var(--green)}
.navgrid button.flag{border-color:var(--gold);box-shadow:inset 0 -3px 0 var(--gold)}
.navgrid button.cur{outline:2px solid var(--text)}
.chip{display:inline-block;padding:4px 10px;border-radius:20px;background:var(--green-l);color:var(--green);font-size:.78rem;font-weight:600}
.chip.gold{background:var(--gold-l);color:#7a5b00}
.chip.red{background:var(--red-l);color:var(--red)}
.score-ring{width:130px;height:130px;border-radius:50%;display:grid;place-items:center;margin:8px auto;font-size:1.8rem;font-weight:800}

/* ---------- notes ---------- */
.notes ul{padding-left:20px} .notes li{margin:4px 0}
table.mini{width:100%;border-collapse:collapse;font-size:.88rem;margin:8px 0}
table.mini th,table.mini td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
table.mini th{background:var(--green-l)}
.tip{background:var(--gold-l);padding:10px 12px;border-radius:10px;margin-top:10px;font-size:.9rem}
.tablewrap{overflow-x:auto}

/* ---------- flashcards ---------- */
.flash{perspective:1000px;height:240px;cursor:pointer;margin:10px 0}
.flash .in{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}
.flash.flip .in{transform:rotateY(180deg)}
.flash .face{position:absolute;inset:0;backface-visibility:hidden;border-radius:16px;display:grid;place-items:center;padding:20px;text-align:center;box-shadow:var(--shadow);overflow:auto}
.flash .front{background:var(--green);color:#fff;font-weight:600;font-size:1.05rem}
.flash .back{background:var(--card);border:2px solid var(--green);transform:rotateY(180deg)}

/* ---------- games ---------- */
.ladder{display:flex;flex-direction:column-reverse;gap:4px}
.ladder div{padding:6px 10px;border-radius:8px;background:var(--bg);font-size:.82rem;border:1px solid var(--line)}
.ladder div.on{background:var(--green);color:#fff}
.ladder div.safe{border-color:var(--gold)}
.matchcol button{display:block;width:100%;margin:6px 0;padding:10px;border-radius:10px;border:1.5px solid var(--line);background:var(--card);cursor:pointer;text-align:left;color:var(--text);font-size:.9rem}
.matchcol button.sel{border-color:var(--green);background:var(--green-l)}
.matchcol button.done{opacity:.35;pointer-events:none;border-color:#1a9e5a}
.matchcol button.wrong{border-color:var(--red);background:var(--red-l)}
.big-tf{display:flex;gap:12px}
.big-tf .btn{flex:1;padding:18px;font-size:1.1rem}

/* ---------- chat ---------- */
.chat{display:flex;flex-direction:column;gap:10px;max-height:55vh;overflow-y:auto;padding:4px}
.msg{padding:10px 13px;border-radius:14px;max-width:88%;white-space:pre-wrap;font-size:.93rem}
.msg.me{align-self:flex-end;background:var(--green);color:#fff;border-bottom-right-radius:4px}
.msg.ai{align-self:flex-start;background:var(--bg);border:1px solid var(--line);border-bottom-left-radius:4px}

/* ---------- bars ---------- */
.bar{display:flex;align-items:center;gap:10px;margin:8px 0;font-size:.88rem}
.bar .lbl{width:44%;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar .track{flex:1;height:10px;background:var(--line);border-radius:10px;overflow:hidden}
.bar .track i{display:block;height:100%}
.bar .pct{width:42px;text-align:right;font-weight:600}

/* ---------- ads ---------- */
.adbox{margin:14px 0;border:1px dashed var(--line);border-radius:12px;padding:6px;text-align:center;min-height:70px;background:var(--card)}
.adbox .adlbl{font-size:.65rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.adbox .placeholder{display:grid;place-items:center;min-height:60px;color:var(--muted);font-size:.85rem}
.adbox .placeholder a{font-weight:600}

/* ---------- auth ---------- */
.auth{max-width:440px;margin:24px auto}
.auth .logo{width:64px;height:64px;font-size:1.3rem;border-radius:18px;margin:0 auto 10px}
.tabs{display:flex;gap:6px;background:var(--bg);padding:4px;border-radius:12px;margin:10px 0}
.tabs button{flex:1;border:0;background:transparent;padding:9px;border-radius:9px;cursor:pointer;font-weight:600;color:var(--muted)}
.tabs button.on{background:var(--card);color:var(--green);box-shadow:var(--shadow)}

/* ---------- pricing ---------- */
.price{border:2px solid var(--line);border-radius:16px;padding:16px;text-align:center;background:var(--card)}
.price.best{border-color:var(--gold)}
.price .amt{font-size:1.7rem;font-weight:800;color:var(--green)}

/* ---------- toast & modal ---------- */
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#14231c;color:#fff;padding:10px 16px;border-radius:12px;z-index:300;font-size:.9rem;box-shadow:var(--shadow);max-width:90vw;text-align:center}
.modal{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.5);display:grid;place-items:center;padding:16px}
.modal .box{background:var(--card);border-radius:16px;padding:18px;width:min(460px,100%);max-height:85vh;overflow:auto}
footer.credit{text-align:center;font-size:.78rem;color:var(--muted);padding:14px 10px 0}
.list-item{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);align-items:center}
.list-item:last-child{border-bottom:0}
.check{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--line)}
.check input{width:20px;height:20px;margin-top:2px;flex:none}
.spinner{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.nocopy{-webkit-user-select:none;user-select:none}

/* ---------- Metro Studio-style icons ---------- */
.ico{width:1.15em;height:1.15em;vertical-align:-.2em;flex:none;display:inline-block}
.ico.sm{width:.95em;height:.95em;vertical-align:-.12em}
.ico.ok{color:#1a9e5a} .ico.bad{color:var(--red)}
.mtile{display:inline-grid;place-items:center;width:42px;height:42px;color:#fff;flex:none}
.mtile .ico{width:24px;height:24px;vertical-align:0}
.tile .mtile{margin-bottom:4px}
h2 .ico,h3 .ico{color:var(--green)}
.hero .ico{color:var(--gold)}
.drawer nav a .ico{width:20px;height:20px;color:var(--green)}
.bottomnav a b .ico{width:22px;height:22px;vertical-align:0}
.iconbtn .ico{width:20px;height:20px;vertical-align:-.25em}
.auth .logo .ico{width:30px;height:30px;color:var(--green-d)}
.rankno{display:inline-grid;place-items:center;width:26px;height:26px;background:var(--line);font-weight:700;font-size:.8rem;margin-right:4px}
.rankno.r1{background:#E3C800;color:#2a2000} .rankno.r2{background:#b8c4cc;color:#14231c} .rankno.r3{background:#c98b4e;color:#fff}
.tip .ico{color:#b38600}
.fillbox{display:flex;gap:8px;margin:6px 0 4px}
.fillbox input{font-size:1rem}
.answerline{background:var(--green-l);padding:8px 12px;margin-top:8px;font-weight:600}
.areas li{margin:6px 0}
.result-pill{display:inline-block;padding:4px 10px;font-weight:700}
.result-pill.ok{background:#e3f7ec;color:#0c4f2c} .result-pill.no{background:var(--red-l);color:var(--red)} .result-pill.maybe{background:var(--gold-l);color:#7a5b00}