/* بنوك الأسئلة — ECC Department. Delta University colors: blue + orange. */
:root{
  --brand:#0062B0; --brand-600:#0A57A0; --brand-700:#0A4783; --brand-soft:#E7F0FA; --brand-softer:#F2F7FD;
  --navy:#0B2545; --navy-2:#123A66;
  --accent:#F26722; --accent-600:#DC5714; --accent-soft:#FDEDE2;
  --l2:#0062B0; --l3:#0E8F84; --l4:#F26722;
  --bg:#F4F6F9; --surface:#FFFFFF; --surface-2:#F7F9FC; --surface-3:#EEF2F7;
  --line:#E3E9F0; --line-2:#CED7E2;
  --ink:#0F1E33; --ink-2:#33445A; --muted:#64748B; --faint:#97A3B4;
  --ok:#15803D; --ok-soft:#E6F4EA; --warn:#A16207; --warn-soft:#FEF6DD; --bad:#C2413A; --bad-soft:#FDECEB;
  --r-xl:26px; --r-lg:20px; --r:16px; --r-sm:11px; --r-xs:8px;
  --sh-1:0 1px 2px rgba(15,30,51,.05),0 1px 3px rgba(15,30,51,.05);
  --sh-2:0 12px 32px -14px rgba(15,30,51,.22),0 2px 6px rgba(15,30,51,.04);
  --sh-3:0 34px 80px -24px rgba(11,37,69,.5);
  --font:'IBM Plex Sans Arabic',system-ui,-apple-system,'Segoe UI',Tahoma,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600}
p{margin:0}
img{display:block;max-width:100%}
a{color:var(--brand)}
[hidden]{display:none!important}
::selection{background:#CFE2F6}
.ico{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ico.sm{width:15px;height:15px}.ico.lg{width:22px;height:22px}.ico.xl{width:32px;height:32px;stroke-width:1.5}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}
.ltr{direction:ltr;unicode-bidi:isolate}
.spacer{flex:1}

/* ---------- boot ---------- */
.boot{min-height:100vh;display:grid;place-items:center;align-content:center;gap:18px}
.boot img{animation:breathe 1.6s var(--ease) infinite}
@keyframes breathe{50%{transform:scale(.94);opacity:.75}}
.spin{width:18px;height:18px;border-radius:50%;border:2.2px solid rgba(0,98,176,.18);border-top-color:var(--brand);animation:spin .75s linear infinite;display:inline-block;flex:none}
.spin.light{border-color:rgba(255,255,255,.3);border-top-color:#fff}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- buttons & inputs ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border-radius:var(--r-sm);border:1px solid var(--line-2);background:var(--surface);cursor:pointer;font-weight:500;white-space:nowrap;transition:background .2s,border-color .2s,box-shadow .2s,transform .12s,color .2s}
.btn:hover{background:var(--surface-2);border-color:var(--faint)}
.btn:active{transform:translateY(1px) scale(.99)}
.btn:focus-visible,.icon-btn:focus-visible,.seg button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.cc:focus-visible,.step:focus-visible{outline:2.5px solid #7DB4E6;outline-offset:2px}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(0,98,176,.25)}
.btn.primary:hover{background:var(--brand-600);border-color:var(--brand-600)}
.btn.accent{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(242,103,34,.3)}
.btn.accent:hover{background:var(--accent-600)}
.btn.white{background:#fff;color:var(--navy);border-color:transparent;box-shadow:0 10px 26px -12px rgba(0,0,0,.5)}
.btn.white:hover{background:#F2F7FD}
.btn.danger{color:var(--bad);border-color:#EFC7C3}
.btn.danger:hover{background:var(--bad-soft)}
.btn.danger.solid{background:var(--bad);border-color:var(--bad);color:#fff}
.btn.ghost{background:transparent;border-color:transparent}
.btn.ghost:hover{background:var(--surface-3)}
.btn.lg{height:50px;padding:0 24px;font-size:16px;border-radius:13px}
.btn.sm{height:34px;padding:0 12px;font-size:13.5px;border-radius:9px}
.btn.block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none}
.icon-btn{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:10px;border:0;background:transparent;color:var(--muted);cursor:pointer;transition:background .15s,color .15s}
.icon-btn:hover{background:var(--surface-3);color:var(--ink)}
.icon-btn.on{color:var(--ok)}
.icon-btn.bad:hover{color:var(--bad);background:var(--bad-soft)}
.field{display:flex;flex-direction:column;gap:7px}
.field>span,.field>.lbl{font-size:13.5px;font-weight:500;color:var(--ink-2)}
.field small{color:var(--faint);font-size:12.5px}
.input,.select,.textarea{width:100%;height:46px;padding:0 14px;border:1px solid var(--line-2);border-radius:12px;background:var(--surface);transition:border-color .2s,box-shadow .2s}
.textarea{height:auto;min-height:88px;padding:11px 14px;resize:vertical;line-height:1.6}
.input:hover,.select:hover,.textarea:hover{border-color:var(--faint)}
.input:focus,.select:focus,.textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 4px rgba(0,98,176,.13)}
.select{appearance:none;padding-inline-end:38px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:left 14px center;cursor:pointer}
.input-wrap{position:relative}
.input-wrap .input{padding-left:48px;padding-right:14px}
.input-wrap .icon-btn{position:absolute;left:5px;top:50%;transform:translateY(-50%)}
.check{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:14px;color:var(--ink-2)}
.check input{width:18px;height:18px;accent-color:var(--brand)}
.form-err{display:flex;gap:9px;align-items:flex-start;padding:11px 13px;border-radius:12px;background:var(--bad-soft);color:var(--bad);font-size:14px;animation:shake .35s var(--ease)}
@keyframes shake{25%{transform:translateX(5px)}50%{transform:translateX(-4px)}75%{transform:translateX(2px)}}

/* ---------- auth ---------- */
.auth{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:40px 16px;background:var(--bg)}
.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);padding:32px 32px 30px;box-shadow:0 1px 2px rgba(15,30,51,.04),0 18px 44px -26px rgba(15,30,51,.22);animation:rise .5s var(--ease)}
.auth-brand{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;margin-bottom:24px}
.auth-brand img{height:46px;width:auto;margin-bottom:14px}
.auth-brand h1{font-size:28px;font-weight:700;letter-spacing:-.3px}
.auth-brand h1::after{content:"";display:block;width:34px;height:3px;border-radius:2px;background:var(--accent);margin:10px auto 6px}
.auth-brand p{color:var(--muted);font-size:14.5px}
.auth-brand .chip{margin-top:10px;height:28px;font-size:12.5px}
.auth-foot{color:var(--faint);font-size:12.5px;text-align:center}
.tabs{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:4px;background:var(--surface-3);border-radius:12px;margin-bottom:24px}
.tabs button{position:relative;z-index:1;height:42px;border:0;background:transparent;border-radius:10px;font-weight:600;color:var(--muted);cursor:pointer;transition:color .25s}
.tabs button.on{color:var(--navy)}
.tabs .ind{position:absolute;top:5px;bottom:5px;width:calc(50% - 5px);border-radius:10px;background:#fff;box-shadow:var(--sh-1),0 4px 12px -4px rgba(15,30,51,.12);transition:inset-inline-start .35s var(--ease);inset-inline-start:5px}
.tabs[data-on="register"] .ind{inset-inline-start:50%}
.auth-card h2{font-size:21px;font-weight:700;margin-bottom:18px}
.auth-card .lead{color:var(--muted);margin:6px 0 24px;font-size:15px}
.auth-card form{display:flex;flex-direction:column;gap:16px}
.hint-row{display:flex;justify-content:space-between;gap:10px;font-size:13px;color:var(--faint)}
.auth-note{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:flex-start}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- shell ---------- */
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.86);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:1240px;margin:0 auto;height:68px;padding:0 24px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:14px;border:0;background:none;padding:0;cursor:pointer;text-align:start}
.brand img{height:40px;width:auto}
.brand .sep{width:1px;height:34px;background:var(--line-2)}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:16px;font-weight:700;color:var(--navy)}
.brand-txt small{font-size:12px;color:var(--muted)}
.chip{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:99px;background:var(--surface-3);color:var(--ink-2);font-size:13px;font-weight:500;white-space:nowrap}
.chip.term{background:var(--brand-soft);color:var(--brand-700)}
.chip.accent{background:var(--accent-soft);color:var(--accent-600)}
.user-btn{display:flex;align-items:center;gap:9px;padding:4px 6px 4px 10px;border-radius:99px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:box-shadow .2s,border-color .2s}
.user-btn:hover{border-color:var(--line-2);box-shadow:var(--sh-1)}
.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:13px;color:#fff;background:var(--brand)}
.user-btn .uname{font-size:14px;font-weight:500}
.menu{position:absolute;top:calc(100% + 8px);inset-inline-end:0;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-2);padding:6px;animation:pop .18s var(--ease);z-index:40}
.menu .who{padding:10px 12px 12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.menu .who b{display:block}
.menu .who small{color:var(--muted)}
.menu button{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border:0;background:none;border-radius:9px;cursor:pointer;text-align:start;font-size:14px}
.menu button:hover{background:var(--surface-2)}
.menu button.bad{color:var(--bad)}
.wrap{max-width:1240px;margin:0 auto;padding:28px 24px 80px}
.view{animation:rise .45s var(--ease)}
.foot{max-width:1240px;margin:0 auto;padding:0 24px 30px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--faint);font-size:12.5px}

/* ---------- home ---------- */
.hero-band{position:relative;border-radius:var(--r-xl);padding:26px 30px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);margin-bottom:22px}
.hero-band .txt{position:relative;flex:1;min-width:240px}
.hero-band .hello{font-size:14px;color:var(--muted)}
.hero-band h1{font-size:26px;font-weight:700;margin:4px 0 4px;letter-spacing:-.3px}
.hero-band p{color:var(--muted)}
.hero-band .acts{position:relative;display:flex;gap:10px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px}
.stat{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;display:flex;align-items:center;gap:15px;box-shadow:var(--sh-1);transition:transform .25s var(--ease),box-shadow .25s}
.stat:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat .si{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.stat:nth-child(2) .si{background:var(--accent-soft);color:var(--accent)}
.stat:nth-child(3) .si{background:#E3F4F2;color:var(--l3)}
.stat:nth-child(4) .si{background:var(--ok-soft);color:var(--ok)}
.stat b{display:block;font-size:26px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--muted)}
.section-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.section-head h2{font-size:20px;font-weight:700}
.seg{display:inline-flex;padding:4px;background:var(--surface-3);border-radius:12px;gap:2px;flex-wrap:wrap}
.seg button{height:34px;padding:0 14px;border:0;border-radius:9px;background:transparent;cursor:pointer;font-size:13.5px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s,box-shadow .2s}
.seg button.on{background:#fff;color:var(--brand-700);box-shadow:var(--sh-1)}
.search{position:relative;min-width:220px;flex:0 1 300px}
.search .ico{position:absolute;inset-inline-start:13px;top:50%;transform:translateY(-50%);color:var(--faint)}
.search .input{padding-inline-start:40px;height:42px}
.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.cc-wrap{position:relative;display:flex;animation:rise .5s var(--ease) both}
.cc-wrap .cc{flex:1;animation:none;width:100%}
.cc-del{position:absolute;top:14px;inset-inline-end:12px;z-index:2;width:32px;height:32px;opacity:.55;transition:opacity .2s,background .15s,color .15s}
.cc-wrap:hover .cc-del,.cc-del:focus-visible{opacity:1}
.cc-del-space{width:30px;flex:none}
.cc{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 20px 16px;cursor:pointer;display:flex;flex-direction:column;gap:13px;text-align:start;box-shadow:var(--sh-1);transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;animation:rise .5s var(--ease) both}
.cc::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--lv)}
.cc:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.cc[data-lv="2"]{--lv:var(--l2)}.cc[data-lv="3"]{--lv:var(--l3)}.cc[data-lv="4"]{--lv:var(--l4)}
.cc-top{display:flex;align-items:center;gap:8px}
.code{font-family:var(--mono);font-weight:600;font-size:13px;letter-spacing:.03em;color:var(--brand-700);background:var(--brand-soft);padding:3px 9px;border-radius:7px;direction:ltr}
.lv-chip{white-space:nowrap;font-size:12px;font-weight:600;padding:3px 9px;border-radius:7px;color:var(--lv);background:color-mix(in srgb,var(--lv) 11%,#fff)}
.cc-main{display:flex;gap:14px;align-items:flex-start}
.cc h3{font-size:16.5px;font-weight:600;flex:1;min-height:46px;line-height:1.4}
.ring{position:relative;width:54px;height:54px;flex:none}
.ring svg{width:54px;height:54px;transform:rotate(-90deg)}
.ring .bgc{fill:none;stroke:var(--surface-3);stroke-width:5}
.ring .fgc{fill:none;stroke:var(--lv,var(--brand));stroke-width:5;stroke-linecap:round;transition:stroke-dashoffset 1s var(--ease)}
.ring em{position:absolute;inset:0;display:grid;place-items:center;font-style:normal;font-size:12px;font-weight:700;color:var(--ink-2)}
.cc-meta{display:flex;gap:16px;color:var(--muted);font-size:13.5px;flex-wrap:wrap}
.cc-meta span{display:inline-flex;align-items:center;gap:6px}
.cc-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12.5px;color:var(--faint);padding-top:12px;border-top:1px dashed var(--line)}
.status{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:99px;white-space:nowrap;flex:none}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.status.none{background:var(--surface-3);color:var(--muted)}
.status.prog{background:var(--warn-soft);color:var(--warn)}
.status.done{background:var(--ok-soft);color:var(--ok)}
.empty{padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px;background:var(--surface);border:1px dashed var(--line-2);border-radius:var(--r-lg)}
.empty .em-ico{width:76px;height:76px;border-radius:22px;background:linear-gradient(135deg,var(--brand-soft),#fff);color:var(--brand);display:grid;place-items:center;margin-bottom:6px;box-shadow:inset 0 0 0 1px var(--line)}
.empty h3{font-size:18px}
.empty p{color:var(--muted);max-width:430px}

/* ---------- course ---------- */
.crumb{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px;margin-bottom:16px}
.crumb button{display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--brand);cursor:pointer;padding:0;font-weight:500}
.course-head{position:relative;overflow:hidden;display:flex;align-items:center;gap:18px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;margin-bottom:18px;box-shadow:var(--sh-1)}
.course-head::before{content:"";position:absolute;inset-block:0;inset-inline-start:0;width:5px;background:linear-gradient(180deg,var(--lv),color-mix(in srgb,var(--lv) 35%,#fff))}
.course-head[data-lv="2"]{--lv:var(--l2)}.course-head[data-lv="3"]{--lv:var(--l3)}.course-head[data-lv="4"]{--lv:var(--l4)}
.course-head h1{font-size:24px;font-weight:700;margin-top:6px}
.course-head .sub{color:var(--muted);font-size:14px;margin-top:4px;display:flex;gap:14px;flex-wrap:wrap}
.course-head .sub span{display:inline-flex;align-items:center;gap:6px}
.course-head .acts{margin-inline-start:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.dirty{display:inline-flex;align-items:center;gap:7px;color:var(--warn);background:var(--warn-soft);height:32px;padding:0 12px;border-radius:99px;font-size:13px;font-weight:500}
.dirty::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor;animation:ping2 1.6s infinite}
@keyframes ping2{50%{opacity:.3}}
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:22px;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.step{position:relative;z-index:1;display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:14px;border:0;background:none;cursor:pointer;text-align:start;color:var(--muted);transition:background .25s}
.step:hover{background:var(--surface-2)}
.step .n{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;border:1.5px solid var(--line-2);font-weight:600;font-size:14px;flex:none;background:var(--surface);transition:all .3s var(--ease)}
.step b{display:block;font-size:14.5px;font-weight:600;color:var(--ink-2)}
.step small{display:block;font-size:12px;line-height:1.3}
.step.on{background:linear-gradient(135deg,var(--brand-soft),#fff)}
.step.on .n{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 0 0 5px rgba(0,98,176,.12)}
.step.on b{color:var(--brand-700)}
.step.done .n{background:var(--ok-soft);border-color:var(--ok-soft);color:var(--ok)}
.step-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.card-pad{padding:22px}
.card-h{display:flex;align-items:center;gap:10px;padding:16px 22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.card-h h2{font-size:16.5px;font-weight:600}
.count{display:inline-grid;place-items:center;min-width:24px;height:22px;padding:0 7px;border-radius:99px;background:var(--surface-3);font-size:12.5px;font-weight:600;color:var(--ink-2);margin-inline-start:6px}

/* step 1 */
.drop{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:38px 20px;border-radius:var(--r-lg);background:var(--surface);border:2px dashed var(--line-2);cursor:pointer;text-align:center;transition:border-color .25s,background .25s,transform .25s var(--ease)}
.drop:hover,.drop.over{border-color:var(--brand);background:var(--brand-softer)}
.drop.over{transform:scale(1.01)}
.drop .d-ico{width:64px;height:64px;border-radius:20px;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:0 14px 30px -14px rgba(0,98,176,.9);transition:transform .35s var(--ease)}
.drop:hover .d-ico{transform:translateY(-4px)}
.drop h3{font-size:17.5px}
.drop p{color:var(--muted);font-size:14px;max-width:520px}
.fmts{display:flex;gap:8px;margin-top:4px}
.ft{display:inline-grid;place-items:center;height:22px;min-width:46px;padding:0 7px;border-radius:6px;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.04em;direction:ltr}
.ft-pptx{background:#FDE9DF;color:#B4552B}.ft-pdf{background:#FBE3E3;color:#A73A3A}.ft-docx{background:#E3ECFA;color:#2F5597}
.drop-opts{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:14px 2px 18px;flex-wrap:wrap}
.queue{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.qi{display:grid;grid-template-columns:auto 1fr auto;gap:6px 12px;align-items:center;padding:12px 14px;border-radius:13px;background:var(--surface);border:1px solid var(--line);animation:rise .35s var(--ease)}
.qi .name{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;direction:ltr;text-align:right}
.qi .st{font-size:13px;color:var(--muted)}
.qi .bar{grid-column:1/-1;height:5px}
.qi.err{border-color:#EFC7C3;background:#FFF8F7}
.qi.err .st{color:var(--bad)}
.bar{height:7px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:inherit;background:var(--brand);transition:width .5s var(--ease)}
.bar.ok>i{background:var(--ok)}
.bar.live>i{background-size:200% 100%;background-image:linear-gradient(90deg,var(--brand),#7DB4E6,var(--brand));animation:flow 1.4s linear infinite}
@keyframes flow{to{background-position:-200% 0}}
.lec-list{display:flex;flex-direction:column}
.lec{display:grid;grid-template-columns:auto 64px 1fr auto auto;gap:12px;align-items:center;padding:12px 22px;border-bottom:1px solid var(--line);transition:background .2s}
.lec:hover{background:var(--surface-2)}
.lec:last-child{border-bottom:0}
.lec .input{height:40px}
.lec .num{text-align:center;padding:0 6px}
.lec-stats{font-size:13px;color:var(--muted);white-space:nowrap;display:flex;gap:10px;align-items:center}
.warn-tag{display:inline-flex;align-items:center;gap:5px;color:var(--warn);background:var(--warn-soft);font-size:12px;padding:1px 8px;border-radius:99px}
.lec-acts{display:flex;gap:2px}
.totals{padding:12px 22px;background:var(--surface-2);border-top:1px solid var(--line);border-radius:0 0 var(--r-lg) var(--r-lg);display:flex;gap:18px;font-size:13.5px;color:var(--muted)}
.totals b{color:var(--ink)}

/* step 2 */
.cols{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:18px;align-items:start}
.stack{display:flex;flex-direction:column;gap:18px}
.total-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.stepper{display:flex;align-items:center;border:1px solid var(--line-2);border-radius:14px;overflow:hidden;background:var(--surface)}
.stepper button{width:46px;height:56px;border:0;background:var(--surface-2);cursor:pointer;display:grid;place-items:center;color:var(--ink-2);transition:background .2s}
.stepper button:hover{background:var(--surface-3)}
.stepper input{width:96px;height:56px;border:0;text-align:center;font-size:26px;font-weight:700;background:transparent;-moz-appearance:textfield;font-variant-numeric:tabular-nums}
.stepper input::-webkit-inner-spin-button{display:none}
.stepper input:focus{outline:none}
.presets{display:flex;gap:6px;flex-wrap:wrap}
.dist{width:100%;border-collapse:collapse;font-size:14px}
.dist th{font-size:12.5px;font-weight:500;color:var(--muted);text-align:start;padding:9px 22px;background:var(--surface-2);border-bottom:1px solid var(--line);white-space:nowrap}
.dist td{padding:10px 22px;border-bottom:1px solid var(--line);vertical-align:middle}
.dist tr:last-child td{border-bottom:0}
.dist tr.off td{color:var(--faint)}
.dist .t{max-width:1px;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dist .w{width:120px}.dist .w .bar{height:5px}
.dist .n{width:96px;text-align:center}
.dist .n input{width:72px;height:36px;text-align:center;padding:0 4px}
.dist .n b{font-size:16px}
.sumline{display:flex;align-items:center;gap:10px;padding:12px 22px;border-top:1px solid var(--line);font-size:14px;background:var(--surface-2);border-radius:0 0 var(--r-lg) var(--r-lg)}
.sumline.bad{color:var(--bad);background:var(--bad-soft)}
.mix-row{display:grid;grid-template-columns:1fr 96px 64px;gap:12px;align-items:center;padding:11px 22px;border-bottom:1px solid var(--line)}
.mix-row:last-child{border-bottom:0}
.mix-row .lbl b{font-weight:500}
.mix-row .lbl small{color:var(--faint);font-family:var(--mono);font-size:11.5px;margin-inline-start:6px}
.pct{position:relative}
.pct input{height:38px;text-align:center;padding-inline-end:22px}
.pct::after{content:"%";position:absolute;inset-inline-end:11px;top:50%;transform:translateY(-50%);color:var(--faint);font-size:13px}
.mix-row .cnt{text-align:center;font-weight:700;font-variant-numeric:tabular-nums}
.rules{padding:22px;position:sticky;top:90px;overflow:hidden}
.rules .r-ico{width:46px;height:46px;border-radius:13px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:12px}
.rules h3{font-size:17px;margin-bottom:6px}
.rules p{color:var(--muted);font-size:14px}
.skel{display:flex;flex-direction:column;gap:10px;margin:16px 0}
.skel i{display:block;height:10px;border-radius:5px;background:linear-gradient(90deg,var(--surface-3),#F7F9FC,var(--surface-3));background-size:200% 100%;animation:flow 1.8s linear infinite}
.rules ol{margin:14px 0 0;padding-inline-start:20px;display:flex;flex-direction:column;gap:8px;font-size:14px}
.gen-cta{padding:20px 22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;background:linear-gradient(135deg,#fff,var(--brand-softer))}
.gen-cta .txt{flex:1;min-width:220px}
.gen-cta .txt b{font-size:16.5px}
.gen-cta .txt p{color:var(--muted);font-size:13.5px}

/* step 3 */
.banner{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:14px;margin-bottom:16px;font-size:14px}
.banner.demo{background:var(--warn-soft);color:#6E4A0F;border:1px solid #F1DBAE}
.banner b{display:block}
.gen{margin-bottom:16px;overflow:hidden}
.gj{display:grid;grid-template-columns:22px 1fr 170px 70px;gap:12px;align-items:center;padding:11px 22px;border-bottom:1px solid var(--line);font-size:14px}
.gj:last-child{border-bottom:0}
.gj .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gj .r{text-align:end;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.gj.done .s{color:var(--ok)}.gj.err .s,.gj.err .r{color:var(--bad)}.gj.wait .s{color:var(--faint)}
.qtools{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.qtools .select{width:auto;min-width:140px;height:40px}
.qtools .search{flex:0 1 260px}
.qtools .search .input{height:40px}
.qsum{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.qs{display:flex;flex-direction:column;gap:12px}
.q{padding:18px 20px;border-inline-start:3px solid transparent;animation:rise .35s var(--ease) both}
.q.approved{border-inline-start-color:var(--ok)}
.q-h{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.qn{display:inline-grid;place-items:center;min-width:32px;height:28px;padding:0 8px;border-radius:8px;background:var(--navy);color:#fff;font-weight:600;font-size:13px;font-family:var(--mono)}
.tag{display:inline-flex;align-items:center;gap:5px;height:25px;padding:0 9px;border-radius:7px;font-size:12.5px;font-weight:500;background:var(--surface-3);color:var(--ink-2);white-space:nowrap}
.tag.type{background:var(--brand-soft);color:var(--brand-700)}
.tag.easy{background:var(--ok-soft);color:var(--ok)}.tag.medium{background:var(--warn-soft);color:var(--warn)}.tag.hard{background:var(--bad-soft);color:var(--bad)}
.tag.demo{background:#F1ECF8;color:#6B4B9A}
.q-acts{margin-inline-start:auto;display:flex;gap:2px}
.q-stem{font-size:15.5px;font-weight:500;margin-bottom:12px;white-space:pre-wrap}
.q-opts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.q-opts li{display:flex;gap:10px;align-items:flex-start;padding:8px 12px;border-radius:10px;background:var(--surface-2);border:1px solid transparent}
.q-opts li .L{font-family:var(--mono);font-weight:600;color:var(--muted);flex:none}
.q-opts li.ok{background:var(--ok-soft);border-color:#C3E5D2}
.q-opts li.ok .L{color:var(--ok)}
.q-opts li .ok-ico{margin-inline-start:auto;color:var(--ok)}
.q-exp{margin-top:10px;font-size:14px;color:var(--ink-2)}
.q-exp summary{cursor:pointer;color:var(--muted);font-size:13px;user-select:none}
.q-exp div{padding:9px 12px;margin-top:6px;background:var(--surface-2);border-radius:10px}
.q-edit{display:flex;flex-direction:column;gap:12px}
.q-edit .row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.opt-list{display:flex;flex-direction:column;gap:8px}
.opt-edit{display:grid;grid-template-columns:auto 26px 1fr auto;gap:8px;align-items:center}
.opt-edit input[type=radio]{width:18px;height:18px;accent-color:var(--ok)}
.opt-edit .L{font-family:var(--mono);font-weight:600;color:var(--muted);text-align:center}
.q-edit .acts{display:flex;gap:8px;justify-content:flex-end}
.more{display:flex;justify-content:center;margin-top:14px}

/* step 4 */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.big-num{display:flex;align-items:baseline;gap:10px;padding:22px 22px 4px}
.big-num b{font-size:46px;font-weight:700;line-height:1;color:var(--ink);-webkit-background-clip:initial;background-clip:initial;color:var(--ink);--x:transparent}
.big-num span{color:var(--muted)}
.brk{padding:10px 22px 20px;display:flex;flex-direction:column;gap:10px}
.brk h4{font-size:13px;color:var(--muted);font-weight:500;margin-top:8px}
.brk-row{display:grid;grid-template-columns:120px 1fr 44px;gap:12px;align-items:center;font-size:14px}
.brk-row em{font-style:normal;text-align:end;font-weight:700;font-variant-numeric:tabular-nums}
.radio-card{display:flex;gap:12px;align-items:flex-start;padding:13px 15px;border:1px solid var(--line);border-radius:13px;cursor:pointer;transition:border-color .2s,background .2s}
.radio-card:hover{border-color:var(--line-2)}
.radio-card.on{border-color:var(--brand);background:var(--brand-softer)}
.radio-card input{margin-top:4px;accent-color:var(--brand)}
.radio-card b{display:block;font-weight:600;font-size:14.5px}
.radio-card span{font-size:13px;color:var(--muted)}
.exp-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.save-box{display:flex;align-items:center;gap:14px;padding:18px 22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.save-box .si{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.save-box .txt{flex:1;min-width:200px}
.save-box .txt p{font-size:13.5px;color:var(--muted)}

/* ---------- course picker (modal) ---------- */
.picker{display:flex;flex-direction:column;gap:16px}
.lv-seg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.lv-seg button{height:54px;border-radius:13px;border:1.5px solid var(--line);background:#fff;cursor:pointer;font-weight:600;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.2;transition:all .2s var(--ease)}
.lv-seg button small{font-weight:400;font-size:11.5px;color:var(--muted)}
.lv-seg button:hover{border-color:var(--line-2)}
.lv-seg button.on{border-color:var(--lv);background:color-mix(in srgb,var(--lv) 8%,#fff);color:var(--lv);box-shadow:0 0 0 4px color-mix(in srgb,var(--lv) 12%,transparent)}
.lv-seg button[data-lv="2"]{--lv:var(--l2)}.lv-seg button[data-lv="3"]{--lv:var(--l3)}.lv-seg button[data-lv="4"]{--lv:var(--l4)}
.course-opts{display:flex;flex-direction:column;gap:6px;max-height:300px;overflow:auto;padding:2px;margin:0 -2px}
.course-opts h5{margin:8px 2px 2px;font-size:12px;color:var(--muted);font-weight:600}
.copt{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:11px 13px;border:1.5px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;text-align:start;transition:all .18s var(--ease)}
.copt:hover:not([disabled]){border-color:var(--line-2);background:var(--surface-2)}
.copt.on{border-color:var(--brand);background:var(--brand-softer);box-shadow:0 0 0 4px rgba(0,98,176,.1)}
.copt[disabled]{opacity:.5;cursor:not-allowed}
.copt .nm{font-weight:500;font-size:14.5px;line-height:1.35}
.copt .cr{font-size:12px;color:var(--muted);white-space:nowrap}
.dept-chip{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);font-size:14px}
.dept-chip .ico{color:var(--brand)}
.dept-chip small{color:var(--muted);margin-inline-start:auto;font-size:12px}

/* ---------- modal & toast ---------- */
.overlay{position:fixed;inset:0;background:rgba(11,37,69,.42);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);display:grid;place-items:center;padding:20px;z-index:60;animation:fade .2s}
.modal{width:100%;max-width:540px;max-height:calc(100vh - 40px);display:flex;flex-direction:column;background:var(--surface);border-radius:22px;box-shadow:var(--sh-3);animation:pop .28s var(--ease)}
.modal.wide{max-width:840px}
.modal-h{display:flex;align-items:center;gap:10px;padding:20px 22px 10px}
.modal-h h3{font-size:19px;flex:1;font-weight:700}
.modal-b{padding:6px 22px 20px;overflow:auto}
.modal-f{display:flex;gap:8px;justify-content:flex-end;padding:14px 22px;border-top:1px solid var(--line);flex-wrap:wrap}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.pre{white-space:pre-wrap;font-size:13.5px;line-height:1.75;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;max-height:60vh;overflow:auto;direction:ltr;text-align:left}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.97)}}
#toasts{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:70;align-items:center;pointer-events:none}
.toast{display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:13px;background:var(--navy);color:#fff;box-shadow:var(--sh-3);font-size:14px;animation:pop .25s var(--ease);max-width:92vw}
.toast.ok .ico{color:#7BE0AE}.toast.info .ico{color:#9FD0FF}.toast.bad{background:var(--bad)}
.loading{display:flex;align-items:center;justify-content:center;gap:12px;padding:70px;color:var(--muted)}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .cols{grid-template-columns:1fr}.rules{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .auth-card{padding:26px 20px 24px;border-radius:20px}
}
@media (max-width:720px){
  .wrap{padding:18px 14px 60px}
  .topbar-in{padding:0 14px;height:62px}
  .brand img{height:30px}.brand .sep,.brand-txt small,.chip.term,.user-btn .uname{display:none}
  .hero-band{padding:24px 22px;border-radius:20px}
  .hero-band h1{font-size:24px}
  .stats{gap:10px}.stat{padding:14px}.stat .si{width:40px;height:40px}.stat b{font-size:21px}
  .steps{grid-template-columns:repeat(4,1fr)}
  .step{flex-direction:column;gap:4px;padding:9px 4px;text-align:center}
  .step small{display:none}.step b{font-size:12.5px}
  .lec{grid-template-columns:auto 56px 1fr auto;padding:12px 14px}
  .lec-stats{grid-column:2/-1;grid-row:2}
  .lec-acts{grid-row:1;grid-column:4}
  .dist .w{display:none}.dist th,.dist td{padding-inline:14px}
  .gj{grid-template-columns:22px 1fr 60px;padding-inline:14px}.gj .bar{display:none}
  .q-edit .row,.form-grid{grid-template-columns:1fr}
  .exp-btns{grid-template-columns:1fr}
  .brk-row{grid-template-columns:90px 1fr 40px}
  .qtools .select{flex:1 1 140px;min-width:0}.qtools .search{flex:1 1 100%}
  .course-head{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}