:root{
  --blue:#0D47A1; --blue-d:#093170; --blue-l:#1565C0;
  --saffron:#F57C00; --saffron-l:#FF9800;
  --bg:#F4F6F8; --card:#FFFFFF; --ink:#37474F; --muted:#78909C;
  --ok:#43A047; --err:#E53935; --line:#E3E8EE;
  --shadow:0 6px 18px rgba(13,71,161,.08); --shadow-s:0 2px 8px rgba(0,0,0,.06);
  --r:18px; --r-s:12px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%}
body{
  font-family:'Inter','Poppins',system-ui,'Segoe UI',Roboto,sans-serif;
  background:var(--bg); color:var(--ink);
  overflow:hidden; /* app is a scroll container; #screen scrolls */
}
button{font-family:inherit; cursor:pointer; border:none; background:none}
img{max-width:100%}
.hidden{display:none !important}
.input[readonly]{background:#eef2f7;color:#16243B;cursor:not-allowed}
.reveal-hint{margin:6px 0 2px;padding:10px 12px;border:1px dashed var(--line);border-radius:var(--r-s);background:#F8FAFC;color:var(--muted);font-size:13px;text-align:center}

/* ---------- App shell ---------- */
#app{display:flex; flex-direction:column; height:100%; max-width:520px; margin:0 auto; background:var(--bg); position:relative}
#screen{flex:1; overflow-y:auto; -webkit-overflow-scrolling:touch; overscroll-behavior:contain; padding-bottom:84px}
.has-topbar #screen{padding-top:0}

/* ---------- Top bar ---------- */
.topbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:10px;
  background:linear-gradient(135deg,var(--blue),var(--blue-l));
  color:#fff; padding:14px 16px; box-shadow:var(--shadow-s);
}
.topbar .tb-title{font-weight:700; font-size:17px; flex:1; line-height:1.2}
.topbar .tb-sub{font-size:11px; opacity:.85; font-weight:500}
.icon-btn{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;background:rgba(255,255,255,.14)}
.icon-btn:active{background:rgba(255,255,255,.28)}
.badge-role{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;background:var(--saffron);color:#fff;padding:3px 8px;border-radius:20px}

/* ---------- Generic ---------- */
.pad{padding:16px}
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;margin-bottom:14px}
.card.tap:active{transform:scale(.99)}
.row{display:flex;align-items:center;gap:10px}
.between{display:flex;align-items:center;justify-content:space-between;gap:10px}
.muted{color:var(--muted)}
.small{font-size:12px}
.h1{font-size:22px;font-weight:800;margin:2px 0 2px}
.h2{font-size:16px;font-weight:700;margin:18px 4px 8px}
.chip{display:inline-block;font-size:11px;font-weight:600;padding:4px 10px;border-radius:20px;background:#E8F0FE;color:var(--blue)}
.chip.saff{background:#FFF1E2;color:var(--saffron)}
.chip.ok{background:#E7F5E9;color:var(--ok)}
.pill-free{background:var(--ok);color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px}
.price{font-weight:800;color:var(--blue);font-size:18px}
.btn{display:block;width:100%;text-align:center;background:var(--blue);color:#fff;font-weight:700;padding:14px;border-radius:var(--r-s);font-size:15px;box-shadow:var(--shadow-s)}
.btn:active{background:var(--blue-d)}
.btn.saff{background:var(--saffron)} .btn.saff:active{background:#E06C00}
.btn.ghost{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn.sm{padding:9px 14px;width:auto;display:inline-block;font-size:13px;border-radius:10px}
.btn.danger{background:var(--err)}
.input{width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:var(--r-s);font-size:15px;margin-bottom:12px;background:#fff;color:var(--ink)}
.input:focus{outline:none;border-color:var(--blue)}
label.lbl{font-size:12px;font-weight:600;color:var(--muted);display:block;margin:0 2px 5px}
select.input{appearance:none}
textarea.input{font-family:inherit;resize:vertical;min-height:104px;line-height:1.5}
.divider{height:1px;background:var(--line);margin:14px 0}

/* ---------- Login / onboarding ---------- */
.login-wrap{min-height:100%;display:flex;flex-direction:column;background:linear-gradient(160deg,var(--blue) 0%,var(--blue-l) 48%,#fff 48%)}
.login-hero{color:#fff;padding:46px 24px 26px;text-align:center}
.brand{font-size:30px;font-weight:800;letter-spacing:.5px}
.brand .sa{color:var(--saffron-l)}
.login-card{background:#fff;border-radius:22px;box-shadow:var(--shadow);margin:0 20px;padding:22px}
.role-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.role-card{background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:12px 6px;text-align:center;font-size:12px;font-weight:600}
.role-card .em{font-size:22px;display:block;margin-bottom:6px}
.role-card.active{border-color:var(--saffron);background:#FFF8F0;box-shadow:0 0 0 2px rgba(245,124,0,.15)}

/* ---------- Home / wallet ---------- */
.hero-wallet{background:linear-gradient(135deg,var(--saffron),var(--saffron-l));color:#fff;border-radius:var(--r);padding:18px;box-shadow:var(--shadow);margin-bottom:14px}
.hero-wallet .bal{font-size:30px;font-weight:800}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{background:var(--card);border-radius:var(--r);padding:14px;box-shadow:var(--shadow-s)}
.stat .n{font-size:22px;font-weight:800;color:var(--blue)}
.quick-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:10px;text-align:center}
.quick{background:#fff;border-radius:14px;padding:12px 4px;box-shadow:var(--shadow-s);font-size:11px;font-weight:600}
.quick .em{font-size:22px;display:block;margin-bottom:5px}

/* ---------- Filters ---------- */
.filters{display:flex;gap:8px;overflow-x:auto;padding:2px 0 10px}
.filters::-webkit-scrollbar{display:none}
.fchip{white-space:nowrap;font-size:13px;font-weight:600;padding:8px 14px;border-radius:20px;background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.fchip.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.lang-opt{flex:1;text-align:center;font-size:15px;font-weight:700;padding:13px 10px;border-radius:var(--r-s);background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.lang-opt.on{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:0 0 0 2px rgba(13,71,161,.15)}

/* ---------- Exam ---------- */
.exam-bar{position:sticky;top:0;z-index:20;background:var(--blue);color:#fff;padding:12px 16px;display:flex;align-items:center;justify-content:space-between}
.timer{font-weight:800;font-size:18px;background:rgba(255,255,255,.16);padding:5px 12px;border-radius:10px}
.timer.warn{background:var(--err)}
.opt{display:flex;align-items:center;gap:12px;border:1.5px solid var(--line);border-radius:14px;padding:14px;margin-bottom:10px;background:#fff;font-size:15px}
.opt .k{width:30px;height:30px;border-radius:50%;background:#EEF2F7;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.opt.sel{border-color:var(--blue);background:#EEF4FF}
.opt.sel .k{background:var(--blue);color:#fff}
.opt.correct{border-color:var(--ok);background:#EAF6EC}.opt.correct .k{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--err);background:#FDECEC}.opt.wrong .k{background:var(--err);color:#fff}
.navgrid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:6px}
.navsq{aspect-ratio:1;border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;background:#ECEFF3;color:var(--ink)}
.navsq.done{background:var(--ok);color:#fff}
.navsq.mark{background:var(--saffron);color:#fff}
.navsq.cur{outline:3px solid var(--blue);outline-offset:1px}

/* ---------- Donut result ---------- */
.donut{width:170px;height:170px;border-radius:50%;margin:6px auto;display:flex;align-items:center;justify-content:center;position:relative}
.donut .inner{width:128px;height:128px;border-radius:50%;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.donut .pct{font-size:32px;font-weight:800;color:var(--blue)}
.res-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;text-align:center}
.res-3 .b{border-radius:14px;padding:12px 4px;color:#fff;font-weight:700}

/* ---------- Performance bars ---------- */
.barwrap{margin:10px 0}
.barwrap .lbl2{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:5px}
.bar{height:9px;border-radius:6px;background:#EAEef3;overflow:hidden}
.bar > i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--blue),var(--blue-l))}

/* ---------- Admin tables ---------- */
.list-item{background:#fff;border-radius:14px;box-shadow:var(--shadow-s);padding:13px 14px;margin-bottom:10px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.kv{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv:last-child{border-bottom:none}
.dash-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.dash-card{border-radius:var(--r);padding:16px;color:#fff;box-shadow:var(--shadow-s)}

/* ---------- Bottom nav ---------- */
.bottomnav{position:absolute;bottom:0;left:0;right:0;max-width:520px;margin:0 auto;background:#fff;display:flex;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(0,0,0,.05)}
.bn{flex:1;text-align:center;padding:9px 0 11px;font-size:10.5px;font-weight:600;color:var(--muted)}
.bn .em{font-size:20px;display:block;margin-bottom:2px}
.bn.on{color:var(--blue)}

/* ---------- Modal ---------- */
.modal-back{position:fixed;inset:0;background:rgba(20,30,50,.5);display:flex;align-items:flex-end;justify-content:center;z-index:60}
.modal{background:#fff;width:100%;max-width:520px;border-radius:22px 22px 0 0;padding:20px;max-height:88%;overflow-y:auto;animation:slideup .22s ease}
@keyframes slideup{from{transform:translateY(40px);opacity:.6}to{transform:translateY(0);opacity:1}}
.modal .grab{width:42px;height:5px;border-radius:5px;background:var(--line);margin:0 auto 14px}

.toast{position:fixed;bottom:96px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:11px 18px;border-radius:24px;font-size:13px;font-weight:600;z-index:90;box-shadow:var(--shadow)}
.empty{text-align:center;color:var(--muted);padding:40px 20px}
.empty .em{font-size:40px;display:block;margin-bottom:10px}
.fab{position:absolute;right:18px;bottom:96px;width:56px;height:56px;border-radius:50%;background:var(--saffron);color:#fff;font-size:28px;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);z-index:30}

/* ---------- v2 additions: fees, documents, big-number graphics ---------- */
.avatar-img{background-size:cover;background-position:center}
.bignum{border-radius:var(--r);padding:16px;color:#fff;box-shadow:var(--shadow-s)}
.bignum .n{font-size:26px;font-weight:800;line-height:1.1}
.bignum .l{font-size:12px;opacity:.92;margin-top:3px}
.ring{width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:4px auto}
.ring .inner{width:90px;height:90px;border-radius:50%;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .pct{font-size:22px;font-weight:800;color:var(--blue)}
.progress{height:12px;border-radius:8px;background:#E7ECF2;overflow:hidden}
.progress > i{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--ok),#66BB6A);transition:width .3s}
.progress.warn > i{background:linear-gradient(90deg,var(--saffron),var(--saffron-l))}
.progress.low > i{background:linear-gradient(90deg,var(--err),#ef6b6b)}
.feerow{padding:12px 0;border-bottom:1px solid var(--line)}
.feerow:last-child{border-bottom:none}
.doc-tile{display:flex;align-items:center;gap:12px;background:#fff;border-radius:14px;box-shadow:var(--shadow-s);padding:12px;margin-bottom:10px}
.doc-ico{width:46px;height:46px;border-radius:11px;background:#EEF4FF;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;overflow:hidden;background-size:cover;background-position:center}
.file-btn{display:block;border:1.5px dashed var(--blue);color:var(--blue);border-radius:12px;padding:13px;text-align:center;font-weight:600;font-size:14px;background:#F5F8FF;margin-bottom:12px}
.file-btn input{display:none}
.seg{display:flex;background:#EEF2F7;border-radius:12px;padding:4px;margin-bottom:14px}
.seg button{flex:1;border-radius:9px;padding:9px;font-size:13px;font-weight:700;color:var(--muted);background:none}
.seg button.on{background:#fff;color:var(--blue);box-shadow:var(--shadow-s)}
.upi-box{border:1.5px solid var(--line);border-radius:14px;padding:14px;text-align:center;margin-bottom:12px;background:#F8FAFC}
.upi-id{font-weight:800;font-size:16px;color:var(--blue);letter-spacing:.3px}
.tag-mode{font-size:10px;font-weight:700;background:#EEF4FF;color:var(--blue);padding:2px 8px;border-radius:14px}
.blocked-badge{font-size:10px;font-weight:700;background:#FDECEC;color:var(--err);padding:3px 9px;border-radius:14px}

/* ---------- v2.1: Top Creators leaderboard + Instructor of the Month ---------- */
.creators-wrap{margin:14px 14px 4px;background:#fff;border-radius:var(--r);padding:16px;box-shadow:var(--shadow-s)}
.creators-head{font-weight:800;font-size:16px}
.creators-sub{margin-top:2px}
.creators-list{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.creator-item{display:flex;align-items:center;gap:12px}
.creator-rank{font-size:22px;width:30px;text-align:center;font-weight:800;color:var(--saffron)}
.creator-img{width:42px;height:42px;border-radius:50%;background-size:cover;background-position:center;flex-shrink:0}
.creator-ph,.iom-ph{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue),var(--blue-l));color:#fff;font-weight:800}
.creator-name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.creator-inst{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.creator-pts{font-weight:800;color:var(--blue);text-align:center;line-height:1}
.creator-pts-l{font-size:10px;color:var(--muted);font-weight:600}
.iom-card{margin-top:12px;background:linear-gradient(135deg,#7b2ff7,#b14bff);color:#fff;border-radius:var(--r);padding:14px;box-shadow:var(--shadow-s)}
.iom-crown{font-weight:800;font-size:13px;letter-spacing:.3px}
.iom-row{display:flex;align-items:center;gap:12px;margin-top:10px}
.iom-img{width:48px;height:48px;border-radius:50%;background-size:cover;background-position:center;flex-shrink:0;border:2px solid rgba(255,255,255,.7)}
.iom-name{font-weight:800;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.iom-inst{font-size:12px;opacity:.92;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.iom-prize{text-align:center;font-weight:800;font-size:20px;line-height:1}
.iom-prize-l{font-size:10px;opacity:.9;font-weight:600;text-transform:uppercase}

/* ---------- v2.2: instructor referral earnings ---------- */
.earn-card{background:linear-gradient(135deg,#0d47a1,#1976d2);color:#fff}
.earn-card .muted{color:rgba(255,255,255,.85)}
.earn-card .progress{background:rgba(255,255,255,.25)}
.earn-card .btn.ghost{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.4)}
.ref-chip{background:rgba(255,255,255,.16);border-radius:14px;padding:10px 12px;text-align:center;flex-shrink:0}
.ref-code{font-size:18px;font-weight:800;letter-spacing:1px;font-family:monospace}
.btn[disabled]{opacity:.5;pointer-events:none}

/* earnings leaderboard rows */
.earn-row{display:flex;align-items:center;gap:12px;padding:8px 0;border-bottom:1px solid #EEF1F5}
.earn-row:last-child{border-bottom:none}
.earn-row.me{background:#F0FBF3;margin:0 -14px;padding-left:14px;padding-right:14px;border-radius:10px}

/* ---- institute CTA banner (login) ---- */
.institute-cta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:12px 16px 0;background:#fff;border:1.5px solid var(--saffron);border-left:6px solid var(--saffron);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow-s)}
.institute-cta-l{display:flex;align-items:center;gap:10px;min-width:0}
.institute-cta-em{font-size:26px}
.institute-cta-t{font-weight:800;color:var(--ink);font-size:14px}
.institute-cta-s{color:var(--muted);font-size:11.5px}
.institute-cta-call{flex-shrink:0;text-align:center;font-size:11px;color:var(--saffron);font-weight:600;line-height:1.3}
.institute-cta-call b{font-size:13px;color:var(--blue)}

/* ---- urgent announcements (student home) ---- */
.announce-wrap{background:#FFF7EC;border:1.5px solid #FFD79A;border-radius:14px;padding:12px;margin-bottom:14px}
.announce-head{font-weight:800;color:#B25E00;font-size:14px;display:flex;align-items:center;gap:8px}
.announce-badge{background:var(--err);color:#fff;font-size:10px;font-weight:700;padding:2px 8px;border-radius:20px}
.announce-card{position:relative;background:#fff;border-radius:10px;padding:10px 12px;margin-top:8px;box-shadow:var(--shadow-s)}
.announce-card.is-new{border-left:4px solid var(--err)}
.announce-dot{position:absolute;top:10px;right:10px;width:9px;height:9px;border-radius:50%;background:var(--err)}
.announce-msg{font-weight:600;color:var(--ink);font-size:13.5px;padding-right:14px}
.announce-meta{margin-top:4px}

/* ---- batch grouping (admin students) ---- */
.batch-group{background:#fff;border-radius:14px;margin-bottom:12px;box-shadow:var(--shadow-s);overflow:hidden}
.batch-head{display:flex;align-items:center;gap:10px;padding:12px 14px;cursor:pointer}
.batch-name{font-weight:800;color:var(--blue);flex:1}
.batch-count{font-size:11px;font-weight:700;background:#EEF4FF;color:var(--blue);padding:3px 9px;border-radius:20px}
.batch-chev{color:var(--muted);transition:transform .2s}
.batch-group.open .batch-chev{transform:rotate(90deg)}
.batch-body{padding:0 14px 12px;border-top:1px solid var(--line)}

/* ---- export builder modal ---- */
.exp-block{margin-top:12px}
.exp-h{font-weight:800;color:var(--ink);font-size:13px;margin-bottom:6px}
.exp-opt{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:13px}
.exp-cols{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px;margin-top:4px}
.exp-col{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink)}
.check-line{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:13px;color:var(--ink)}
.check-line input,.exp-opt input,.exp-col input{width:17px;height:17px;accent-color:var(--blue)}

/* ---- small / primary buttons ---- */
.btn.xs{display:inline-block;width:auto;padding:6px 12px;font-size:12px;border-radius:9px}
.btn.primary{background:var(--blue)}
.btn.primary:active{background:var(--blue-d)}

/* ---- bilingual exam (Hindi line under English) ---- */
.qhi{font-size:13.5px;font-weight:600;color:var(--blue-l);margin-top:4px;line-height:1.45}
.ohi{display:block;font-size:12.5px;color:var(--muted);margin-top:2px;line-height:1.35}

/* ---- language toggle (login first page) ---- */
.lang-toggle{display:flex;gap:8px;margin:0 16px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:5px}
.lang-btn{flex:1;border:0;background:transparent;color:var(--ink);font-size:13px;font-weight:700;padding:9px 6px;border-radius:9px;cursor:pointer}
.lang-btn.on{background:var(--blue);color:#fff}

/* ---- payment option cards (enrolment) ---- */
.pay-opt{cursor:pointer;transition:transform .05s ease,box-shadow .15s ease;border:1.5px solid var(--line)}
.pay-opt:active{transform:scale(.99)}
.pay-opt.disabled{opacity:.5;pointer-events:none}

/* =====================================================================
   WEB-ONLY desktop framing. Phones (and the Capacitor APK) are always
   below this breakpoint, so these rules never affect the native app.
   ===================================================================== */
@media (min-width: 560px) {
  body {
    overflow: auto;
    background:
      radial-gradient(1200px 600px at 15% -10%, rgba(13,71,161,.16), transparent 60%),
      radial-gradient(1000px 700px at 110% 10%, rgba(245,124,0,.14), transparent 55%),
      linear-gradient(160deg, #0b2a5e 0%, #0D47A1 38%, #123e86 100%);
    min-height: 100vh;
  }
  body::before {
    content: "StudyITI";
    position: fixed; top: 20px; left: 0; right: 0;
    text-align: center; color: #fff; opacity: .92;
    font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 20px;
    letter-spacing: .3px; pointer-events: none; z-index: 1;
  }
  body::after {
    content: "ITI Exam Prep • Enrolment • Fees Wallet • Reports — studyiti.techwaveacademy.com";
    position: fixed; bottom: 14px; left: 0; right: 0;
    text-align: center; color: rgba(255,255,255,.72); font-size: 12px;
    pointer-events: none; z-index: 1;
  }
  #app {
    height: auto;
    min-height: 0;
    margin: 56px auto 44px;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,.45), 0 2px 0 rgba(255,255,255,.06) inset;
    border: 1px solid rgba(255,255,255,.12);
    background: var(--bg);
    /* Fixed phone-like viewport on desktop so #screen scrolls internally */
    height: min(860px, calc(100vh - 120px));
  }
  #screen { -webkit-overflow-scrolling: touch; }
}

@media (min-width: 560px) and (display-mode: standalone) {
  /* Installed PWA: drop the marketing chrome, fill the window. */
  body::before, body::after { display: none; }
  body { background: var(--bg); }
  #app { margin: 0 auto; height: 100vh; border-radius: 0; box-shadow: var(--shadow); border: 0; }
}