/* ============================================================
   MOBIL / PLANSHET RESPONSIV — sidebar burger menyuga aylanadi
   (experiments.css dan KEYIN yuklanadi — shu bois ustun turadi)
   ============================================================ */

/* burger tugma — faqat mobil/planshetda ko'rinadi */
.stu-burger{
  display:none; align-items:center; justify-content:center;
  background:none; border:none; cursor:pointer;
  color:#1D4ED8; padding:4px; border-radius:9px; line-height:0;
}
.stu-burger:hover{ background:rgba(37,99,235,.08); }
.stu-burger svg{ width:26px; height:26px; }

/* chiqish tugmasi — endi ikona (matnsiz): toza kvadrat, markazda */
#logout{ padding:0 !important; width:40px; height:40px; justify-content:center; }
#logout i{ font-size:1.02rem; }

/* ---------- MOBIL + PLANSHET (≤900px) ---------- */
@media (max-width:900px){
  /* eski 760px "qatorli" sidebar ko'rinishini butunlay bekor qilish */
  .stu-app{ flex-direction:row !important; }

  /* sidebar -> chetdan chiqadigan menyu (drawer) */
  .stu-side{
    position:fixed !important; left:0; top:0;
    height:100vh !important; width:min(264px,82vw) !important;
    flex-direction:column !important; flex-wrap:nowrap !important;
    align-items:stretch !important;
    transform:translateX(-100%); transition:transform .3s ease;
    z-index:70; overflow-y:auto;
  }
  .stu-side.open{ transform:none; box-shadow:0 0 0 100vmax rgba(10,22,38,.5); }

  .stu-nav{ flex-direction:column !important; flex-wrap:nowrap !important; }
  .stu-brand{ padding-bottom:20px !important; }
  .stu-foot{ display:block !important; }        /* drawer'da footer qaytadi */

  .stu-main{ width:100%; min-width:0; }
  .stu-burger{ display:inline-flex; }
  .stu-topbar{ z-index:40; }                    /* drawer topbardan yuqorida */
}

/* ---------- KICHIK TELEFON (≤600px) ---------- */
@media (max-width:600px){
  .stu-topbar{ padding:12px 16px !important; gap:10px; }
  .stu-topbar__title{ font-size:1.08rem !important; }
  .stu-content{ padding:18px 16px 32px !important; }
  /* runner modal telefonda deyarli to'liq ekran */
  .runner{ padding:0 !important; }
  .runner__card{ max-height:100vh !important; border-radius:0 !important; }
}
.page-hero{padding:120px 0 8px;text-align:center}
    /* Sinfga kod orqali qo'shilish */
    .join-wrap{padding:10px 0 4px}
    .joinbox{max-width:560px;margin:0 auto;background:#fff;border:1.5px solid #E9EEF5;border-radius:18px;padding:18px 22px;box-shadow:0 16px 36px -28px rgba(10,37,64,.5)}
    .joinbox__title{font-family:'Sora',sans-serif;font-weight:800;font-size:1.1rem;color:#1D4ED8;display:flex;align-items:center;gap:8px}
    .joinbox__hint{color:#5B6B7D;font-size:.86rem;margin:6px 0 12px}
    .joinbox__row{display:flex;gap:10px}
    .joinbox__row input{flex:1;padding:12px 14px;border:1.5px solid #E9EEF5;border-radius:11px;font-family:'Sora',sans-serif;font-size:1.05rem;font-weight:700;letter-spacing:3px;text-transform:uppercase;text-align:center;color:#0F2238}
    .joinbox__row input:focus{outline:none;border-color:#2563EB;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
    .joinbox__preview{margin-top:12px}
    .jp{background:#F6F9FC;border:1px solid #E9EEF5;border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
    .jp b{font-size:1rem;color:#0F2238}
    .jp__meta{color:#5B6B7D;font-size:.85rem}
    .jp--ok{background:rgba(22,163,74,.08);border-color:rgba(22,163,74,.3);color:#16A34A;flex-direction:row;align-items:center;gap:8px}
    .jp--err{background:rgba(239,68,68,.07);border-color:rgba(239,68,68,.3);color:#EF4444}
    /* O'quvchi paneli: admin/ustoz kabi qora panel */
    body{background:#F4F8FC}
    .stu-app{display:flex;min-height:100vh}
    .stu-side{width:248px;flex:none;background:linear-gradient(180deg,#0F2238,#0A1626);color:#cdd9e6;padding:18px 14px 8px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;overflow-x:hidden}
    .stu-brand{display:flex;align-items:center;gap:11px;padding:6px 8px 20px;font-family:'Sora',sans-serif;font-weight:800;color:#fff;font-size:1.12rem}
    .stu-brand img{width:34px;height:34px;display:block}
    .stu-nav{display:flex;flex-direction:column;gap:4px;flex:none}
    .stu-label{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:#62788f;margin:14px 12px 6px}
    .stu-link{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:11px;color:#aebfd0;font-weight:600;cursor:pointer;text-decoration:none;transition:.15s}
    .stu-link:hover{background:rgba(255,255,255,.06);color:#fff}
    .stu-link.on{background:linear-gradient(135deg,#00D9FF,#2563EB);color:#fff;box-shadow:0 8px 20px -8px rgba(37,99,235,.7)}
    .stu-foot{padding:14px 12px 4px;border-top:1px solid rgba(255,255,255,.08);font-size:.74rem;color:#6f86a0}
    .stu-main{flex:1;min-width:0;display:flex;flex-direction:column}
    .stu-topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 28px;background:#fff;border-bottom:1px solid #E9EEF5;position:sticky;top:0;z-index:30}
    .stu-topbar__title{display:flex;align-items:center;gap:10px;font-family:'Sora',sans-serif;font-weight:700;font-size:1.25rem;color:#1D4ED8}
    .stu-topbar__title .dot{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#00D9FF,#2563EB)}
    .stu-topbar__actions{display:flex;align-items:center;gap:14px}
    .stu-who{display:none}
    .logout{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:11px;color:#fff;font-weight:600;background:#EF4444;border:none;cursor:pointer}
    .logout:hover{background:#DC2626}
    .stu-content{padding:26px 28px 40px;flex:1}
    .sview{display:none}
    .sview.on{display:block}
    .fan-crumb{display:flex;align-items:center;gap:8px;margin-bottom:16px;font-size:.95rem;min-height:22px}
    .fan-crumb .crumb{display:inline-flex;align-items:center;gap:6px;color:#1D4ED8;font-weight:700;cursor:pointer}
    .fan-crumb .crumb.on{color:#0F2238;cursor:default}
    .fan-crumb .crumb-sep{color:#9AA7B5}
    .fan-empty{text-align:center;padding:50px 20px;color:#5B6B7D}
    .fan-empty i{font-size:2.4rem;color:#C7D3E0;margin-bottom:12px;display:block}
    /* Fan kartalari (zamonaviy, bosh sahifadagidek) */
    .cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
    .cat-card{background:#fff;border:1px solid #E9EEF5;border-radius:20px;overflow:hidden;color:inherit;box-shadow:0 12px 30px -20px rgba(10,37,64,.4);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;cursor:pointer}
    .cat-card:hover{transform:translateY(-6px);box-shadow:0 26px 50px -24px rgba(10,37,64,.5)}
    .cat-card__media{height:150px;display:grid;place-items:center;position:relative;overflow:hidden;background:linear-gradient(135deg,#00D9FF,#2563EB)}
    .cat-card__media svg{width:74px;height:74px}
    .cat-card__img{width:100%;height:100%;object-fit:cover;display:block}
    .cat--phys{background:linear-gradient(135deg,#00D9FF,#2563EB)}
    .cat-card__body{padding:16px 18px 20px}
    .cat-card__body h3{font-family:'Sora',sans-serif;font-weight:700;font-size:1.08rem;margin:0 0 4px;color:#0F2238}
    .cat-card__body p{color:#5B6B7D;font-size:.86rem;line-height:1.5;margin:0 0 12px}
    .cat-card__count{font-size:.85rem;font-weight:700;color:#2563EB;display:inline-flex;align-items:center;gap:6px}
    .sinf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
    .sinf-card{background:#fff;border:1.5px solid #E9EEF5;border-radius:16px;padding:22px 16px;text-align:center;cursor:pointer;transition:.2s;display:flex;flex-direction:column;align-items:center;gap:8px}
    .sinf-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -24px rgba(10,37,64,.5);border-color:#2563EB}
    .sinf-card__ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:1.3rem;background:linear-gradient(135deg,#7B61FF,#2563EB)}
    .sinf-card__name{font-family:'Sora',sans-serif;font-weight:800;font-size:1.05rem;color:#0F2238}
    .sinf-card__count{color:#5B6B7D;font-size:.84rem}
    /* Lab kartalari kategoriya kartalaridek ixcham */
    .exp-grid{grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}
    .exp-card__media{height:150px;font-size:2.6rem}
    .exp-card__body{padding:16px 18px 20px}
    .exp-card__body h3{font-size:1.08rem}
    @media(max-width:760px){.stu-app{flex-direction:column}.stu-side{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center}.stu-nav{flex-direction:row;flex-wrap:wrap}.stu-brand{padding-bottom:0}.stu-foot{display:none}}
    .catbar{position:sticky;top:74px;z-index:40;background:var(--glass-strong);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:14px 0}
    .catbar .exp-filters{margin:0;justify-content:center}
    .subj{padding-block:40px}
    .subj.hide{display:none}
    .subj-count{display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 9px;margin-left:10px;border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-family:var(--font-display);font-weight:700;font-size:.8rem;vertical-align:middle}
    .exp-card{position:relative}
    .exp-card.locked{opacity:.86}
    .lockbadge{position:absolute;top:12px;right:12px;z-index:3;display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:var(--r-pill);font-size:.74rem;font-weight:700;background:rgba(10,37,64,.78);color:#fff;backdrop-filter:blur(4px)}
    .reason{font-size:.78rem;color:var(--muted);margin-top:6px}
    .results{padding:30px 0 60px}
    .res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
    .res-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;box-shadow:var(--shadow-sm)}
    .res-card h4{font-family:var(--font-display);margin-bottom:8px}
    .res-stat{display:flex;justify-content:space-between;font-size:.9rem;padding:4px 0;border-bottom:1px dashed var(--line)}
    .res-stat:last-child{border-bottom:0}
    /* runner */
    .runner{position:fixed;inset:0;z-index:1000;display:none;place-items:center;padding:18px;background:rgba(10,37,64,.55);backdrop-filter:blur(8px)}
    .runner.on{display:grid}
    .runner__card{width:min(680px,100%);max-height:92vh;overflow:auto;background:var(--white);border-radius:var(--r-xl);box-shadow:var(--shadow-lg);padding:0}
    .runner__head{position:sticky;top:0;background:var(--white);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 24px;border-bottom:1px solid var(--line)}
    .runner__timer{font-family:var(--font-display);font-weight:700;color:var(--aqua-deep)}
    .runner__body{padding:22px 24px}
    .qcard{border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px;margin-bottom:14px}
    .qcard.correct{border-color:#16A34A;background:rgba(22,163,74,.05)}
    .qcard.wrong{border-color:#EF4444;background:rgba(239,68,68,.04)}
    .qcard h4{font-family:var(--font-display);font-size:1rem;margin-bottom:10px}
    .qcard .ans{display:flex;gap:8px}
    .qcard input{flex:1;padding:11px 13px;border:1.5px solid var(--line);border-radius:10px}
    .qfeed{font-size:.84rem;margin-top:8px;font-weight:600}
    .qfeed.ok{color:#16A34A}.qfeed.no{color:#EF4444}
    .summary{text-align:center;padding:14px 0}
    .summary .big{font-family:var(--font-display);font-weight:800;font-size:2.6rem;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
    .sum-stats{display:flex;justify-content:center;gap:26px;margin-top:10px;flex-wrap:wrap}
    .sum-stats div b{display:block;font-family:var(--font-display);font-size:1.3rem}
    .rolebar{max-width:1180px;margin:14px auto 0;padding:12px 18px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
    /* ===== Natijalarim (chiroyli) ===== */
    .results-head{margin-bottom:18px}
    .results-title{font-family:'Sora',sans-serif;font-weight:800;font-size:1.5rem;color:#0F2238;margin:0}
    .results-sub{color:#5B6B7D;font-size:.92rem;margin:5px 0 0}
    .rsum{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:22px}
    .rsum__item{background:#fff;border:1px solid #E9EEF5;border-radius:16px;padding:18px 20px;box-shadow:0 12px 30px -24px rgba(10,37,64,.4)}
    .rsum__item b{display:block;font-family:'Sora',sans-serif;font-weight:800;font-size:1.85rem;line-height:1.1;background:linear-gradient(135deg,#00D9FF,#2563EB);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
    .rsum__item span{color:#5B6B7D;font-size:.85rem;font-weight:600}
    .res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
    .rcard{background:#fff;border:1px solid #E9EEF5;border-radius:18px;padding:18px 20px;box-shadow:0 14px 34px -26px rgba(10,37,64,.45);transition:transform .2s,box-shadow .2s}
    .rcard:hover{transform:translateY(-4px);box-shadow:0 24px 50px -28px rgba(10,37,64,.5)}
    .rcard__top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}
    .rcard__name{font-family:'Sora',sans-serif;font-weight:700;font-size:1.05rem;color:#0F2238;line-height:1.3}
    .rcard__score{flex:none;display:grid;place-items:center;width:56px;height:56px;border-radius:50%;font-family:'Sora',sans-serif;font-weight:800;font-size:1.02rem;color:#fff;box-shadow:0 8px 18px -8px rgba(10,37,64,.5)}
    .rcard__score--good{background:linear-gradient(135deg,#16A34A,#22C55E)}
    .rcard__score--ok{background:linear-gradient(135deg,#2563EB,#00D9FF)}
    .rcard__score--mid{background:linear-gradient(135deg,#F59E0B,#FBBF24)}
    .rcard__score--low{background:linear-gradient(135deg,#EF4444,#F87171)}
    .rcard__meta{display:flex;flex-direction:column;gap:9px}
    .rcard__row{display:flex;align-items:center;justify-content:space-between;font-size:.88rem;color:#5B6B7D}
    .rcard__row i{width:16px;text-align:center;margin-right:5px;color:#9AA7B5}
    .rcard__row b{color:#0F2238;font-weight:700}
    .rcard__status{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;font-size:.8rem;font-weight:700;margin-top:5px;width:fit-content}
    .rcard__status--ok{background:rgba(22,163,74,.1);color:#16A34A}
    .rcard__status--doing{background:rgba(245,158,11,.12);color:#D97706}
    /* ===== Uy vazifalarim ===== */
    .hwm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
    .hwm-card{background:#fff;border:1px solid #E9EEF5;border-left:4px solid #F59E0B;border-radius:16px;padding:18px 20px;box-shadow:0 14px 34px -26px rgba(10,37,64,.45);display:flex;flex-direction:column;gap:8px}
    .hwm-card.done{border-left-color:#16A34A}
    .hwm-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
    .hwm-status{font-size:.78rem;font-weight:700;padding:5px 11px;border-radius:999px}
    .hwm-status.ok{background:rgba(22,163,74,.1);color:#16A34A}
    .hwm-status.wait{background:rgba(245,158,11,.13);color:#D97706}
    .hwm-status.over{background:rgba(239,68,68,.1);color:#EF4444}
    .hwm-class{font-size:.78rem;font-weight:600;color:#2563EB}
    .hwm-card h3{font-family:'Sora',sans-serif;font-weight:700;font-size:1.08rem;color:#0F2238;margin:2px 0 0}
    .hwm-note{font-size:.86rem;color:#7C8AA0;font-style:italic;margin:0}
    .hwm-due{font-size:.84rem;color:#5B6B7D}
    .hwm-due.over{color:#EF4444;font-weight:600}
    .hwm-open{margin-top:6px}

/* ---- Sidebar social ikonkalar ---- */
.stu-socials{
  margin:auto 12px 12px;
  padding:14px 12px 12px;
  border-top:1px solid rgba(255,255,255,.08);
  text-align:center;
}
.stu-socials__label{
  display:block;
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:rgba(255,255,255,.35);
  margin-bottom:10px;
}
.stu-socials__icons{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
}
.stu-socials__icons a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px; height:36px;
  border-radius:10px;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.65);
  font-size:1rem;
  text-decoration:none;
  transition:background .18s, color .18s, transform .18s;
}
.stu-socials__icons a:hover{
  background:rgba(255,255,255,.18);
  color:#fff;
  transform:translateY(-2px);
}
.stu-socials__icons a .fa-telegram{ color:#29b6f6; }
.stu-socials__icons a .fa-youtube{ color:#ff3c3c; }
.stu-socials__icons a .fa-instagram{ color:#f77737; }
.stu-socials__icons a:hover .fa-telegram,
.stu-socials__icons a:hover .fa-youtube,
.stu-socials__icons a:hover .fa-instagram{ filter:brightness(1.2); }

    /* ===== Daftar tekshirish ===== */
    .nb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
    .nb-card{position:relative;background:var(--white);border:1px solid var(--line);border-radius:22px;
      padding:22px 22px 20px;box-shadow:0 18px 40px -28px rgba(10,37,64,.35);overflow:hidden;
      transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
    .nb-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--grad-brand)}
    .nb-card:hover{transform:translateY(-4px);box-shadow:0 26px 54px -26px rgba(10,37,64,.42)}
    .nb-card__head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:12px}
    .nb-subject{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:700;color:var(--ink-2)}
    .nb-subject__ico{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:10px;
      background:var(--grad-brand);color:#fff;font-size:.82rem;flex:none}
    .nb-subject__class{color:var(--muted);font-weight:600}
    .nb-grade{display:inline-flex;align-items:center;gap:7px;padding:6px 13px 6px 6px;border-radius:var(--r-pill);font-weight:700;font-size:.82rem;white-space:nowrap}
    .nb-grade__num{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:rgba(255,255,255,.55);font-family:var(--font-display);font-size:.8rem}
    .nb-grade--wait{background:rgba(107,122,141,.12);color:var(--muted)}
    .nb-grade--wait .nb-grade__num{background:transparent}
    .nb-grade--bad{background:rgba(239,68,68,.12);color:#DC2626}
    .nb-grade--mid{background:rgba(245,158,11,.14);color:#B45309}
    .nb-grade--good{background:rgba(37,99,235,.12);color:#1D4ED8}
    .nb-grade--top{background:rgba(22,163,74,.12);color:#15803D}
    .nb-card h3{font-family:var(--font-display);font-weight:700;font-size:1.12rem;margin:0 0 6px;color:var(--ink)}
    .nb-tag{display:inline-block;font-size:.78rem;font-weight:600;color:var(--aqua-deep);background:rgba(0,217,255,.1);
      padding:4px 11px;border-radius:var(--r-pill);margin-bottom:10px}
    .nb-due{display:flex;align-items:center;gap:6px;font-size:.82rem;color:var(--muted);margin-bottom:14px}
    .nb-due.over{color:#EF4444;font-weight:600}
    .nb-card__cta{width:100%;justify-content:center;display:flex;align-items:center;gap:8px}

    .nb-detail{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line-2);animation:fadeUp .35s var(--ease)}
    .nb-task-img{max-width:100%;border-radius:14px;margin-bottom:14px;box-shadow:var(--shadow-sm);display:block}
    .nb-sub{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-start;margin-bottom:14px}
    .nb-sub__thumb{width:120px;height:120px;object-fit:cover;border-radius:14px;box-shadow:0 8px 22px -12px rgba(10,37,64,.4);
      cursor:zoom-in;transition:transform .25s var(--ease);flex:none;border:3px solid var(--white);outline:2px solid var(--nb-ring,var(--line-2))}
    .nb-sub__thumb:hover{transform:scale(1.05)}
    .nb-feedback{flex:1;min-width:220px;background:linear-gradient(135deg,rgba(0,217,255,.07),rgba(123,97,255,.07));
      border-left:3px solid var(--aqua-deep);border-radius:12px;padding:12px 14px;font-size:.9rem;color:var(--ink-2);line-height:1.5}
    .nb-feedback__lbl{display:flex;align-items:center;gap:6px;font-family:var(--font-display);font-weight:700;font-size:.78rem;color:var(--aqua-deep);margin-bottom:5px;text-transform:uppercase;letter-spacing:.03em}
    .nb-error{color:#EF4444;font-weight:600}

    .nb-upload{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .nb-upload input[type=file]{display:none}
    .nb-upload__pick{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:var(--r-pill);
      background:var(--glass);border:1.5px dashed var(--line-2);color:var(--ink-2);font-weight:600;font-size:.88rem;
      cursor:pointer;transition:.25s var(--ease)}
    .nb-upload__pick:hover{border-color:var(--aqua);color:var(--aqua-deep);background:rgba(0,217,255,.06)}
    .nb-upload__name{font-size:.82rem;color:var(--muted);max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}