:root{
  --bg:#f4f6fb;--card:#fff;--ink:#1b2333;--mute:#6b7690;--line:#e5e9f2;
  --brand:#4f6ef7;--brand2:#7c5cfa;--ok:#22a06b;--warn:#f59e0b;--bad:#e5484d;
  --soft:#eef1fe;--shadow:0 6px 24px rgba(30,45,90,.08);--r:18px;
  --safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px);
}
:root[data-theme=dark]{
  --bg:#0f1420;--card:#171e2e;--ink:#e8ecf6;--mute:#93a0ba;--line:#242d42;--soft:#1e2740;--shadow:0 6px 24px rgba(0,0,0,.35);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){--bg:#0f1420;--card:#171e2e;--ink:#e8ecf6;--mute:#93a0ba;--line:#242d42;--soft:#1e2740;--shadow:0 6px 24px rgba(0,0,0,.35)}
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font:16px/1.7 "Cairo","Segoe UI",Tahoma,system-ui,sans-serif;padding-top:var(--safe-t);overflow-x:hidden}
h1,h2,h3{margin:0 0 12px;line-height:1.35}
h1{font-size:24px;font-weight:800}h2{font-size:18px;font-weight:700}h3{font-size:16px;font-weight:700}
p{margin:0 0 10px}
a{color:var(--brand);text-decoration:none}
[hidden]{display:none!important}
.ic{width:22px;height:22px;flex:none}
.mute{color:var(--mute);font-size:14px}.center{text-align:center}

/* boot */
#boot{position:fixed;inset:0;display:grid;place-content:center;justify-items:center;gap:12px;background:var(--bg);z-index:100;font-weight:700;color:var(--mute)}
.spinner{width:38px;height:38px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--brand);animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* layout */
#app{display:flex;min-height:100vh}
#main{flex:1;min-width:0;padding:20px 16px calc(92px + var(--safe-b));animation:fade .25s ease}
#view{max-width:980px;margin:auto}
#side{display:none;position:sticky;top:0;height:100vh;width:250px;flex:none;background:var(--card);border-inline-end:1px solid var(--line);padding:22px 14px;flex-direction:column;gap:6px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;padding:0 10px 16px}
.brand i{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-style:normal}
.nav-i{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;color:var(--mute);font-weight:600;transition:.15s}
.nav-i:hover{background:var(--soft);color:var(--ink)}
.nav-i.on{background:var(--soft);color:var(--brand)}
.side-foot{margin-top:auto;font-size:13px;color:var(--mute);padding:10px}
#bottom{position:fixed;inset:auto 0 0;display:flex;background:var(--card);border-top:1px solid var(--line);padding:6px 6px calc(6px + var(--safe-b));z-index:20}
#bottom .nav-i{flex:1;flex-direction:column;gap:2px;padding:7px 2px;font-size:12px;border-radius:12px}
@media(min-width:900px){#side{display:flex}#bottom{display:none}#main{padding:30px 34px 40px}}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* cards & forms */
.card{background:var(--card);border-radius:var(--r);padding:18px;box-shadow:var(--shadow);margin-bottom:14px;border:1px solid var(--line)}
.grid{display:grid;gap:14px}
@media(min-width:700px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row.end{justify-content:flex-end}.row.between{justify-content:space-between}
.btn{border:0;border-radius:14px;padding:12px 18px;font:700 15px "Cairo",system-ui,sans-serif;cursor:pointer;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .12s,opacity .2s}
.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:var(--soft);color:var(--ink)}.btn.danger{background:var(--bad)}.btn.ok{background:var(--ok)}
.btn.sm{padding:7px 12px;font-size:13px;border-radius:11px}.btn.block{width:100%}.btn.icon{padding:8px;border-radius:10px}
label.f{display:block;font-weight:600;font-size:14px;margin:12px 0 6px;color:var(--mute)}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{width:100%;padding:12px 14px;border-radius:13px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:16px "Cairo",system-ui,sans-serif;outline:none;transition:border .15s}
input:focus,select:focus,textarea:focus{border-color:var(--brand)}
textarea{min-height:110px;resize:vertical}
.err{color:var(--bad);font-size:14px;min-height:20px;margin-top:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:9px 15px;border-radius:999px;border:1px solid var(--line);background:var(--bg);cursor:pointer;font-weight:600;font-size:14px;transition:.15s;user-select:none}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
.opt{display:flex;align-items:center;gap:12px;padding:14px;border-radius:14px;border:1.5px solid var(--line);cursor:pointer;margin-bottom:8px;font-weight:600;transition:.15s}
.opt.on{border-color:var(--brand);background:var(--soft)}
.empty{text-align:center;color:var(--mute);padding:28px 10px}
.sw{position:relative;width:46px;height:26px;flex:none;display:inline-block}
.sw input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer;z-index:1}
.sw i{position:absolute;inset:0;background:var(--line);border-radius:999px;transition:.2s}
.sw i:after{content:"";position:absolute;top:3px;inset-inline-start:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s}
.sw input:checked+i{background:var(--ok)}.sw input:checked+i:after{inset-inline-start:23px}

/* progress */
.bar-track{height:10px;border-radius:999px;background:var(--line);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.ring{position:relative;width:132px;height:132px;flex:none}
.ring svg{width:100%;height:100%}
.ring-bg{fill:none;stroke:var(--line);stroke-width:10}
.ring-fg{fill:none;stroke:var(--brand);stroke-width:10;stroke-linecap:round;transition:stroke-dashoffset .8s cubic-bezier(.2,.8,.2,1)}
.ring-in{position:absolute;inset:0;display:grid;place-content:center;text-align:center;line-height:1.25}
.ring-in b{font-size:22px}.ring-in span{font-size:12px;color:var(--mute)}

/* gate (auth / onboarding) */
#gate{position:fixed;inset:0;z-index:50;background:var(--bg);overflow-y:auto;padding:calc(20px + var(--safe-t)) 16px calc(20px + var(--safe-b))}
.gate-wrap{max-width:460px;margin:auto;animation:fade .3s ease}
.logo{display:flex;align-items:center;gap:12px;justify-content:center;margin:20px 0 18px;font-size:26px;font-weight:800}
.logo i{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-style:normal}
.tabs{display:flex;gap:6px;background:var(--soft);padding:5px;border-radius:14px;margin-bottom:14px;overflow-x:auto}
.tabs a,.tabs button{flex:1;white-space:nowrap;text-align:center;padding:9px 12px;border-radius:10px;font-weight:700;font-size:14px;color:var(--mute);border:0;background:none;cursor:pointer;font-family:inherit}
.tabs .on{background:var(--card);color:var(--brand);box-shadow:0 2px 8px rgba(0,0,0,.08)}
.steps{display:flex;gap:6px;margin-bottom:16px}.steps i{flex:1;height:5px;border-radius:9px;background:var(--line)}.steps i.on{background:var(--brand)}
.or{display:flex;align-items:center;gap:10px;color:var(--mute);margin:14px 0;font-size:13px}.or:before,.or:after{content:"";flex:1;height:1px;background:var(--line)}

/* home */
.hello{font-size:26px;font-weight:800;margin-bottom:4px}
.stat{display:flex;align-items:center;gap:14px}
.stat .big{font-size:34px;font-weight:800;line-height:1}
.stat .ico{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:var(--soft);color:var(--brand);flex:none}
.stat .ico.fire{background:#fff1e6;color:#f97316}
:root[data-theme=dark] .stat .ico.fire{background:#3a2616}
.banner{padding:14px 16px;border-radius:16px;margin-bottom:14px;font-weight:600}
.banner.warn{background:#fff4dc;color:#8a5a00;border:1px solid #f5d38a}
.banner.info{background:var(--soft);color:var(--ink)}
:root[data-theme=dark] .banner.warn{background:#3a2d10;color:#ffd98a;border-color:#6b5320}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .banner.warn{background:#3a2d10;color:#ffd98a;border-color:#6b5320}:root:not([data-theme=light]) .stat .ico.fire{background:#3a2616}}
.cont{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;background:var(--bg);margin-bottom:8px;cursor:pointer;border:1px solid var(--line)}
.cont:hover{border-color:var(--brand)}
.dot{width:40px;height:40px;border-radius:12px;background:var(--soft);color:var(--brand);display:grid;place-items:center;font-weight:800;flex:none}

/* study */
.timer{font:800 64px/1.1 "Cairo",system-ui,sans-serif;text-align:center;font-variant-numeric:tabular-nums;letter-spacing:2px;margin:18px 0}
.focus{max-width:520px;margin:auto}
.dua{font:600 26px/2.1 "Amiri","Cairo",serif;text-align:center;padding:24px 8px}
.rate{display:grid;gap:8px}.rate button{text-align:start;padding:12px 14px;border-radius:13px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);font:600 15px "Cairo",system-ui,sans-serif;cursor:pointer;transition:.15s}
.rate button.on{border-color:var(--brand);background:var(--soft)}
.sum{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.sum div{background:var(--bg);border-radius:14px;padding:12px;text-align:center;border:1px solid var(--line)}
.sum b{display:block;font-size:20px}.sum span{font-size:12px;color:var(--mute)}

/* admin */
.item{display:flex;align-items:center;gap:10px;padding:12px;border-radius:14px;border:1px solid var(--line);background:var(--card);margin-bottom:8px;flex-wrap:wrap}
.item .t{flex:1;min-width:140px}.item .t b{display:block}.item .t span{font-size:13px;color:var(--mute)}
.tg{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--mute)}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700;background:var(--soft);color:var(--brand)}
.badge.off{background:var(--line);color:var(--mute)}

/* overlays */
.modal{position:fixed;inset:0;z-index:80;background:rgba(10,15,30,.55);display:flex;align-items:flex-end;justify-content:center;opacity:0;transition:opacity .2s}
.modal.in{opacity:1}
.sheet{background:var(--card);width:100%;max-width:520px;border-radius:24px 24px 0 0;padding:22px 20px calc(22px + var(--safe-b));max-height:90vh;overflow-y:auto;transform:translateY(30px);transition:transform .25s}
.modal.in .sheet{transform:none}
@media(min-width:700px){.modal{align-items:center}.sheet{border-radius:24px}}
.cf-msg{font-size:17px;font-weight:600;margin-bottom:16px}
#toasts{position:fixed;inset:calc(14px + var(--safe-t)) 0 auto;display:grid;gap:8px;justify-items:center;z-index:120;pointer-events:none;padding:0 14px}
.toast{background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:14px;font-weight:600;font-size:14px;max-width:440px;opacity:0;transform:translateY(-10px);transition:.25s;box-shadow:var(--shadow)}
.toast.in{opacity:1;transform:none}
.xp-pop{position:fixed;top:38%;inset-inline:0;text-align:center;font-size:44px;font-weight:800;color:var(--brand);z-index:130;pointer-events:none;animation:pop 1.6s ease forwards;text-shadow:0 4px 20px rgba(79,110,247,.4)}
@keyframes pop{0%{opacity:0;transform:translateY(20px) scale(.6)}20%{opacity:1;transform:translateY(0) scale(1.1)}70%{opacity:1}100%{opacity:0;transform:translateY(-70px) scale(1)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* flip clock */
.flip{direction:ltr;display:flex;justify-content:center;align-items:flex-start;gap:clamp(3px,1.2vw,8px);margin:18px 0 8px}
.fg{display:flex;gap:3px;position:relative;padding-bottom:20px}
.fg small{position:absolute;bottom:0;left:0;right:0;text-align:center;font-size:11px;color:var(--mute)}
.sep{font-size:clamp(24px,7vw,40px);line-height:1.55;color:var(--mute);margin-top:0}
.fd{position:relative;width:1.05em;height:1.55em;font-size:clamp(30px,9.5vw,54px);perspective:400px;color:#f3f5fb;font-weight:800;font-family:"Cairo",system-ui,sans-serif}
.fd .u,.fd .l,.fd .f1,.fd .f2{position:absolute;left:0;right:0;height:50%;overflow:hidden;background:#1d2336;backface-visibility:hidden}
.fd .u,.fd .f1{top:0;border-radius:.14em .14em 0 0;border-bottom:1px solid #0b0f1a}
.fd .l,.fd .f2{bottom:0;border-radius:0 0 .14em .14em;box-shadow:inset 0 -2px 6px rgba(0,0,0,.25)}
.fd span{position:absolute;left:0;right:0;height:1.55em;line-height:1.55em;text-align:center;font-variant-numeric:tabular-nums}
.fd .u span,.fd .f1 span{top:0}.fd .l span,.fd .f2 span{bottom:0}
.fd .f1{transform-origin:bottom;visibility:hidden;z-index:2}
.fd .f2{transform-origin:top;visibility:hidden;transform:rotateX(90deg);z-index:2}
.fd.go .f1{visibility:visible;animation:flipTop .26s ease-in forwards}
.fd.go .f2{visibility:visible;animation:flipBot .26s .26s ease-out forwards}
@keyframes flipTop{to{transform:rotateX(-90deg)}}
@keyframes flipBot{to{transform:rotateX(0)}}
:root[data-theme=light] .fd .u,:root[data-theme=light] .fd .l,:root[data-theme=light] .fd .f1,:root[data-theme=light] .fd .f2{background:#252c42}

/* pomodoro + sound bar */
.phase{margin-top:6px}
.pill{display:inline-block;padding:3px 14px;border-radius:999px;font-weight:700;font-size:13px;background:var(--soft);color:var(--brand)}
.pill.short,.pill.long{background:#e3f6ec;color:var(--ok)}
:root[data-theme=dark] .pill.short,:root[data-theme=dark] .pill.long{background:#143324}
.dots{display:flex;justify-content:center;align-items:center;gap:7px;margin:4px 0 10px}
.dots i{width:10px;height:10px;border-radius:50%;background:var(--line)}.dots i.on{background:var(--brand)}.dots i.cur{background:var(--brand);opacity:.45}
.sndbar{display:flex;align-items:center;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);flex-wrap:wrap;justify-content:center;color:var(--mute)}
.sndbar select{width:auto;flex:1;min-width:140px;padding:8px 12px;font-size:14px}
.sndbar input[type=checkbox]{width:auto}
input[type=range]{width:100%;accent-color:var(--brand)}
input[type=number]{text-align:center}

/* report */
.tips{margin:6px 0 0;padding-inline-start:18px;font-size:14px;color:var(--mute)}
.chart{display:flex;gap:6px;align-items:flex-end;height:150px;direction:ltr}
.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;min-width:0}
.chart .bx{flex:1;width:100%;display:flex;align-items:flex-end;background:var(--bg);border-radius:8px;overflow:hidden}
.chart .bx i{display:block;width:100%;border-radius:8px 8px 0 0;background:linear-gradient(180deg,var(--brand),var(--brand2));transition:height .6s}
.chart .v{font-size:11px;color:var(--mute);height:14px}.chart .d{font-size:11px;color:var(--mute)}

/* شريط علوي بالشعار (موبايل) */
#top{display:flex;justify-content:center;padding:2px 0 14px}
#top .brand{padding:0}
.brand{cursor:pointer;user-select:none;-webkit-user-select:none}
@media(min-width:900px){#top{display:none}}

/* شريط التحديث */
#upd{position:fixed;top:0;inset-inline:0;z-index:200;display:flex;align-items:center;justify-content:center;gap:14px;padding:calc(10px + var(--safe-t)) 14px 10px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:700;font-size:15px;box-shadow:0 4px 18px rgba(0,0,0,.25);animation:updIn .35s ease}
#upd button{border:0;border-radius:11px;padding:7px 18px;font:800 14px "Cairo",system-ui,sans-serif;background:#fff;color:var(--brand);cursor:pointer}
#upd button:disabled{opacity:.7}
#upd .u-x{background:rgba(255,255,255,.22);color:#fff;padding:7px 11px;line-height:1;font-size:16px}
html.upd-on body{padding-top:calc(var(--safe-t) + 54px)}
@keyframes updIn{from{transform:translateY(-100%)}to{transform:none}}

/* اختبرني + كتبي */
.cta{display:flex;align-items:center;gap:14px;color:var(--ink);cursor:pointer;background:linear-gradient(135deg,var(--soft),var(--card));border-color:var(--brand)}
.cta .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;flex:none}
.cta h3{margin:0 0 2px}.cta p{margin:0}.cta>.ic:last-child{margin-inline-start:auto;color:var(--brand)}
.q-text{font-size:19px;font-weight:700;line-height:1.9;margin-bottom:14px}
.opt .oi{width:30px;height:30px;border-radius:9px;background:var(--soft);color:var(--brand);display:grid;place-items:center;font-weight:800;flex:none}
.opt.right{border-color:var(--ok);background:rgba(34,160,107,.14)}
.opt.wrong{border-color:var(--bad);background:rgba(229,72,77,.12)}
.opt.dim{opacity:.55}
.fb{padding:12px 14px;border-radius:14px;margin:10px 0;font-weight:700}
.fb.ok{background:rgba(34,160,107,.14);color:var(--ok)}.fb.no{background:rgba(229,72,77,.12);color:var(--bad)}
.wr{padding:12px 0;border-bottom:1px solid var(--line)}.wr:last-child{border-bottom:0}
.bk{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;border:1px solid var(--line);background:var(--bg);margin-bottom:8px}
.bk .ico{width:40px;height:40px;border-radius:12px;background:var(--soft);color:var(--brand);display:grid;place-items:center;flex:none}
.bk .t{flex:1;min-width:0}.bk .t b{display:block;overflow-wrap:anywhere}.bk .t span{font-size:13px;color:var(--mute)}
input[type=file]{width:100%;padding:10px;border-radius:13px;border:1px dashed var(--line);background:var(--bg);color:var(--ink);font:14px "Cairo",system-ui,sans-serif}