:root{--red:#C1272D;--red-l:rgba(193,39,45,.1);--green:#006233;--green-l:#e6f4ed;--black:#0d0d0d;--dark:#1c1c1e;--muted:#aeaeb2;--border:#e5e5ea;--bg:#f5f5f7;--white:#fff;--sh:0 2px 16px rgba(0,0,0,.06);--theme-main:var(--red);--theme-accent:#808080;--orange:#FF8A00;--orange-l:rgba(255,138,0,.12);--gold:#D4AF37;}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--black);width:100%;max-width:430px !important;margin:0 auto !important;min-height:100vh;overflow-x:hidden;position:relative;}
body.ar,body.darija{font-family:'Cairo',sans-serif;}
/* Tablet / desktop: center the mobile column with a pleasant tablet backdrop */
@media (min-width: 600px){
  html{background:linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);}
  html::before{content:"";position:fixed;inset:0;background-image:radial-gradient(circle at 2px 2px, rgba(255,255,255,0.04) 1px, transparent 0);background-size:32px 32px;pointer-events:none;z-index:0;}
  body{box-shadow:0 24px 80px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.06);min-height:100vh;}
}
/* Bottom nav stays fixed + centered via left:50%; already aligns with body */
.app-shell{position:relative;width:100%;min-height:100vh;padding-bottom:84px;}
.screen{display:none;padding-bottom:12px;background:var(--bg);width:100%;}
.screen.active{display:flex;flex-direction:column;animation:fadeUp .25s ease-out;}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.ph{background:var(--white);padding:12px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;min-height:62px;}
.ph h2{font-size:18px;font-weight:800;}
.logo-header{height:40px;width:auto;max-width:140px;object-fit:contain;display:block;}
.bnav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:430px;background:rgba(255,255,255,.98);border-top:1px solid var(--border);display:flex;padding-bottom:env(safe-area-inset-bottom);backdrop-filter:blur(15px);z-index:200;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
.bnav::-webkit-scrollbar{display:none;}
.ni{flex:0 0 auto;min-width:68px;display:flex;flex-direction:column;align-items:center;padding:10px 8px 6px;cursor:pointer;border:none;background:none;transition:all .2s;color:var(--muted);}
.ni-i{font-size:19px;margin-bottom:3px;}
.ni-l{font-size:9px;font-weight:700;color:var(--muted);text-transform:uppercase;white-space:nowrap;}
.ni.active{color:var(--red);}
.ni.active .ni-l{color:var(--red);}
.card{background:var(--white);border-radius:16px;padding:18px;margin:12px 16px;box-shadow:var(--sh);border:1px solid var(--border);}
.sr{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:0 16px;}
.sc{background:var(--white);border-radius:14px;padding:15px 10px;text-align:center;box-shadow:var(--sh);border:1px solid var(--border);}
.sn{font-size:22px;font-weight:900;margin-bottom:4px;}
.sl{font-size:10px;color:var(--muted);font-weight:700;text-transform:uppercase;}
.balc{background:linear-gradient(135deg, #0d1f18 0%, #0a0a0a 100%);color:white;margin:16px;border-radius:20px;padding:24px;box-shadow:0 8px 24px rgba(0,0,0,0.25);border:1px solid rgba(255,255,255,0.05);}
.btn-p{background:var(--red);color:white;padding:14px;border-radius:12px;border:none;width:100%;font-weight:700;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:transform .15s, box-shadow .15s;}
.btn-p:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(193,39,45,.25);}
.btn-p:active{transform:translateY(0);}
.fi{width:100%;background:var(--bg);border:1.5px solid var(--border);border-radius:10px;color:var(--black);font-family:inherit;font-size:15px;padding:13px 14px;outline:none;}
.fi:focus{border-color:var(--red);}
#onboarding{position:fixed;top:0;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:430px;background:var(--white);z-index:999;display:none;flex-direction:column;align-items:center;justify-content:center;padding:40px;text-align:center;overflow-y:auto;}
.ob-step{display:none;width:100%;max-width:380px;}
.ob-step.active{display:block;animation:fadeUp .3s ease;}
.txi{display:flex;align-items:center;gap:12px;background:var(--white);border:1.5px solid var(--border);border-radius:12px;padding:14px;margin:0 16px 8px;box-shadow:var(--sh);}
.txic{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.video-container{position:relative;width:100%;background:#000;border-radius:12px;overflow:hidden;margin-bottom:12px;}
video{width:100%;display:block;}
.video-controls{position:absolute;bottom:10px;right:10px;display:flex;gap:8px;}
.v-btn{background:rgba(255,255,255,0.2);backdrop-filter:blur(5px);border:none;color:white;padding:6px 10px;border-radius:6px;font-size:10px;font-weight:700;cursor:pointer;}
.progress-bar{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-top:8px;}
.progress-fill{height:100%;background:linear-gradient(90deg, var(--red) 0%, var(--orange) 100%);border-radius:3px;transition:width .3s ease;}
.v-score{font-size:11px;font-weight:700;color:var(--green);background:var(--green-l);padding:2px 8px;border-radius:10px;}
.fab{position:fixed;bottom:96px;right:max(16px,calc(50% - 215px + 16px));width:56px;height:56px;border-radius:50%;background:var(--red);color:white;border:none;font-size:28px;font-weight:700;box-shadow:0 8px 20px rgba(193,39,45,.35);cursor:pointer;z-index:150;}
.empty-state{text-align:center;padding:40px 20px;color:var(--muted);}
.empty-state .em-i{font-size:48px;margin-bottom:12px;opacity:.5;}
.choice-btn{padding:14px;border-radius:12px;border:1.5px solid var(--border);background:var(--white);color:var(--black);font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;text-align:left;transition:all .15s;}
.choice-btn:hover{border-color:var(--red);}
.choice-num-btn{flex:1;aspect-ratio:1;max-height:72px;border-radius:16px;border:2px solid var(--border);background:var(--white);color:var(--black);font-family:inherit;font-size:28px;font-weight:900;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;box-shadow:0 2px 8px rgba(0,0,0,0.04);}
.choice-num-btn:hover{border-color:var(--red);transform:translateY(-2px);box-shadow:0 6px 14px rgba(193,39,45,0.15);}
.choice-num-btn:active{transform:translateY(0);}
.choice-num-btn:disabled{cursor:default;transform:none !important;}
.choice-num-btn.selected{background:var(--orange);color:white;border-color:var(--orange);box-shadow:0 6px 18px rgba(255,138,0,.35);transform:translateY(-2px);}
.choice-num-btn.correct{border-color:var(--green);background:var(--green-l);color:var(--green);box-shadow:0 4px 12px rgba(0,98,51,0.25);}
.choice-num-btn.wrong{border-color:var(--red);background:var(--red-l);color:var(--red);}
.choices-row{display:flex;gap:10px;padding:0;}
.choices-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;padding:0;max-width:500px;margin:0 auto;}
.choices-grid.cols-3{grid-template-columns:repeat(3,1fr);}
.choices-grid.cols-4{grid-template-columns:repeat(2,1fr);}
.choices-grid.cols-2{grid-template-columns:repeat(2,1fr);}
.choices-grid .choice-num-btn{aspect-ratio:1.3;max-height:96px;font-size:34px;}
.btn-valider{width:100%;margin-top:14px;padding:18px 22px;background:var(--red);color:white;border:none;border-radius:14px;font-weight:900;font-size:17px;letter-spacing:0.5px;cursor:pointer;box-shadow:0 6px 0 #8a1a1f,0 10px 20px rgba(193,39,45,.25);transition:transform .1s,box-shadow .1s;font-family:inherit;}
.btn-valider:hover{transform:translateY(-1px);box-shadow:0 7px 0 #8a1a1f,0 12px 24px rgba(193,39,45,.3);}
.btn-valider:active{transform:translateY(4px);box-shadow:0 2px 0 #8a1a1f,0 4px 10px rgba(193,39,45,.2);}
.btn-valider:disabled{background:var(--muted);box-shadow:0 4px 0 #888;cursor:not-allowed;transform:none;}
.fr-card{border-left:6px solid var(--red);margin:0 0 14px 0;padding:14px 16px;}
.fr-card-head{font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:0.5px;}
.q-img-wrap{position:relative;border-radius:18px;overflow:hidden;background:#0d0d0d;min-height:200px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;margin-bottom:14px;box-shadow:0 10px 30px rgba(0,0,0,0.12);}
.q-img-wrap img{max-height:340px;object-fit:contain;}
.mode-btn{flex:1;padding:9px 6px;border:1.5px solid var(--border);background:var(--white);border-radius:10px;font-size:11px;font-weight:700;cursor:pointer;color:var(--muted);transition:all .15s;}
.mode-btn.active{background:var(--red);color:white;border-color:var(--red);box-shadow:0 4px 10px rgba(193,39,45,0.2);}
.exam-timer{background:var(--red);color:white;padding:4px 12px;border-radius:12px;font-weight:800;font-size:13px;font-variant-numeric:tabular-nums;}
.exam-timer.warning{background:#FF9500;animation:pulse 1s infinite;}
.exam-timer.danger{background:var(--red);animation:pulse .5s infinite;}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.6}}
.exam-result{padding:24px 16px;text-align:center;}
.exam-score{font-size:64px;font-weight:900;margin:8px 0;font-variant-numeric:tabular-nums;}
.exam-badge{display:inline-block;padding:8px 18px;border-radius:20px;font-size:13px;font-weight:800;margin-top:8px;}
.exam-badge.pass{background:var(--green-l);color:var(--green);}
.exam-badge.fail{background:var(--red-l);color:var(--red);}
.exam-stat{background:var(--bg);padding:10px 14px;border-radius:10px;font-size:12px;display:flex;justify-content:space-between;margin-bottom:6px;}
.install-banner{position:fixed;bottom:84px;left:50%;transform:translateX(-50%);width:calc(100% - 32px);max-width:400px;background:var(--black);color:white;padding:14px 16px;border-radius:14px;display:none;align-items:center;justify-content:space-between;z-index:300;box-shadow:0 12px 30px rgba(0,0,0,.25);}
.install-banner.show{display:flex;}
.install-banner button{background:var(--red);color:white;border:none;padding:8px 14px;border-radius:8px;font-weight:700;font-size:13px;cursor:pointer;margin-left:10px;}
.install-banner .x-btn{background:transparent;color:#aaa;padding:4px 8px;}
#emergent-badge{display:none !important;}
.cat-pill{padding:6px 12px;border:1.5px solid var(--border);background:var(--white);border-radius:20px;font-size:11px;font-weight:700;cursor:pointer;color:var(--muted);white-space:nowrap;transition:all .15s;}
.cat-pill.active{background:var(--red);color:white;border-color:var(--red);}
.cat-scroll{display:flex;gap:8px;padding:0 16px 12px;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
.cat-scroll::-webkit-scrollbar{display:none;}
.wa-btn{background:#25D366 !important;}
.q-progress{font-size:11px;color:var(--muted);padding:0 16px 8px;font-weight:700;text-transform:uppercase;display:flex;justify-content:space-between;}
#q-img-wrap{background:#0d0d0d;min-height:200px;display:flex;align-items:center;justify-content:center;color:#888;font-size:13px;border-radius:18px;overflow:hidden;margin-bottom:14px;box-shadow:0 10px 30px rgba(0,0,0,0.12);}
.sheet-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:400;display:none;}
.sheet-backdrop.show{display:block;}
.sheet{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:430px;background:var(--white);border-radius:20px 20px 0 0;padding:20px;z-index:401;max-height:80vh;overflow-y:auto;}
.sheet h3{margin-bottom:12px;}
.sheet .fi{margin-bottom:10px;}
.sheet-row{display:flex;gap:10px;}
.wa-option{display:flex;gap:12px;align-items:center;padding:12px;border:1.5px solid var(--border);border-radius:12px;margin-bottom:8px;cursor:pointer;transition:all .15s;}
.wa-option:hover{border-color:#25D366;background:#f0fff4;}
.wa-option-icon{width:40px;height:40px;border-radius:10px;background:#25D366;color:white;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.wa-option-text{flex:1;}
.wa-option-text .t{font-weight:700;font-size:14px;margin-bottom:2px;}
.wa-option-text .s{font-size:12px;color:var(--muted);}
.form-row{margin-bottom:12px;}
.form-row label{display:block;font-size:12px;font-weight:700;color:var(--muted);margin-bottom:6px;text-transform:uppercase;}
.form-row select{width:100%;background:var(--bg);border:1.5px solid var(--border);border-radius:10px;padding:13px 14px;font-family:inherit;font-size:15px;outline:none;-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'><path fill='%23aeaeb2' d='M6 8L1 3h10z'/></svg>");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;}
.form-row select:focus,.form-row input:focus{border-color:var(--red);}
.form-group{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.sync-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:20px;font-size:11px;font-weight:700;margin-left:auto;}
.sync-chip.ok{background:var(--green-l);color:var(--green);}
.sync-chip.off{background:#fff4e5;color:#c86a00;}
.sync-chip.err{background:var(--red-l);color:var(--red);}
.sync-dot{width:7px;height:7px;border-radius:50%;background:currentColor;}
.switch{position:relative;display:inline-block;width:44px;height:24px;}
.switch input{opacity:0;width:0;height:0;}
.switch .slider{position:absolute;cursor:pointer;inset:0;background:var(--border);transition:.2s;border-radius:24px;}
.switch .slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background:white;transition:.2s;border-radius:50%;box-shadow:0 2px 4px rgba(0,0,0,.2);}
.switch input:checked + .slider{background:var(--green);}
.switch input:checked + .slider:before{transform:translateX(20px);}
.toast{position:fixed;top:16px;left:50%;transform:translateX(-50%);background:var(--black);color:white;padding:12px 20px;border-radius:12px;font-size:14px;font-weight:600;z-index:500;opacity:0;transition:opacity .3s;pointer-events:none;box-shadow:0 8px 24px rgba(0,0,0,.25);max-width:90vw;}
.toast.show{opacity:1;}
.toast.error{background:var(--red);}
.toast.success{background:var(--green);}

/* ========================================
   DESKTOP LAYOUT (≥ 1024px)
   SaaS-Style: Left Sidebar + Wide Content
   ======================================== */
@media (min-width: 1024px) {
  html{background:var(--bg);}
  html::before{display:none;}
  body{max-width:100% !important;background:var(--bg);box-shadow:none;min-height:100vh;}

  /* App shell: left sidebar space */
  .app-shell{padding-left:240px;padding-bottom:24px;padding-right:24px;max-width:1600px;margin:0 auto;}

  /* Bottom nav → Left sidebar */
  .bnav{
    top:0;bottom:0;left:0;transform:none;
    width:240px;max-width:240px;height:100vh;
    flex-direction:column;justify-content:flex-start;
    padding:28px 16px;gap:4px;
    border-top:none;border-right:1px solid var(--border);
    background:#0d0d0d;
  }
  .bnav::before{
    content:"Siya9a Pro";
    display:block;padding:0 12px 24px;
    color:#fff;font-weight:800;font-size:18px;letter-spacing:0.5px;
    border-bottom:1px solid rgba(255,255,255,0.08);margin-bottom:16px;
  }
  .ni{flex:none;flex-direction:row;align-items:center;justify-content:flex-start;
      padding:11px 14px;border-radius:10px;gap:12px;color:#aaa;transition:all .15s;}
  .ni:hover{background:rgba(255,255,255,0.05);color:#fff;}
  .ni.active{background:var(--red);color:#fff;}
  .ni.active .ni-l{color:#fff;}
  .ni-i{font-size:17px;margin-bottom:0;}
  .ni-l{font-size:12px;font-weight:600;text-transform:none;letter-spacing:0;}

  /* Hide install banner on desktop */
  .install-banner{display:none !important;}

  /* FAB moves to upper-right corner of content */
  .fab{bottom:auto;top:24px;right:32px;}

  /* Screens take wider layout */
  .screen{background:var(--bg);}
  .ph{padding:20px 32px;border-radius:0;border:none;margin:0 -24px 16px;background:var(--white);border-bottom:1px solid var(--border);}
  .ph h2{font-size:22px;}

  /* Dashboard wide grid */
  #dashboard .balc{margin:0 0 20px 0;max-width:100%;}
  #dashboard .sr{grid-template-columns:repeat(6,1fr);padding:0;max-width:100%;margin-bottom:20px;}
  #dashboard .card{margin:0 0 20px 0;}
  #dashboard > .card:not(.balc){max-width:100%;}

  /* Dashboard two-column grid starting after balance */
  .dash-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px;}
  .dash-grid .card{margin:0;}

  /* Students grid — 2-3 columns on desktop */
  #st-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px;padding:0;}
  #st-list .card{margin:0;}
  #st-list .empty-state{grid-column:1/-1;}

  /* Transactions wider column */
  #tx-list{max-width:820px;}
  #tx-list .txi{margin:0 0 10px 0;}

  /* Theorie screen: wider container */
  #theorie > div[style*="padding:0 16px"]{padding:0 !important;max-width:820px;margin:0 auto;}
  #theorie .cat-scroll{padding:0 0 12px;max-width:820px;margin:0 auto;}
  #theorie > div[style*="display:flex;gap:8px;padding:0 16px 8px"]{padding:0 0 8px !important;max-width:820px;margin:0 auto;}
  #theorie .q-progress{padding:0 0 8px;max-width:820px;margin:0 auto;}
  #q-img-wrap{min-height:320px;}
  #q-img-wrap img{max-height:460px;}
  .choices-grid{max-width:680px;}
  .btn-valider{max-width:820px;margin-left:auto;margin-right:auto;}

  /* Settings wider */
  #settings .card{max-width:820px;}

  /* Form sheet (modal) — larger on desktop */
  .sheet{max-width:520px;border-radius:20px;bottom:auto;top:50%;left:50%;transform:translate(-50%,-50%);max-height:85vh;}

  /* Onboarding / Auth screen stays centered */
  #onboarding{left:0;right:0;transform:none;max-width:100%;}
  #onboarding .ob-step{max-width:520px;}
  #onboarding .auth-logo{height:180px !important;max-width:380px !important;margin-bottom:28px !important;}
}

/* Tablet range (600-1023px): wider mobile column */
@media (min-width: 600px) and (max-width: 1023px) {
  body{max-width:560px !important;}
  .bnav{max-width:560px;}
  .install-banner{max-width:528px;}
  .fab{right:max(16px,calc(50% - 280px + 16px));}
  #st-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;padding:0 16px;}
  #st-list .card{margin:0;}
  .sheet{max-width:560px;}
}