:root{--prdx-font:IRANSansX,Tahoma,Arial,sans-serif}.prdx-student-shell,.prdx-student-shell *{box-sizing:border-box;font-family:var(--prdx-font)!important}.prdx-student-shell{min-height:100vh;background:radial-gradient(circle at 12% 6%,rgba(0,212,255,.18),transparent 34%),radial-gradient(circle at 82% 0,rgba(124,58,237,.16),transparent 32%),linear-gradient(180deg,#050611,#0b1020 52%,#060711);color:#f8fafc;direction:rtl;padding:22px}.prdx-student-layout{max-width:1440px;margin:auto;display:grid;grid-template-columns:292px minmax(0,1fr);gap:18px}.prdx-student-sidebar{border:1px solid rgba(255,255,255,.1);background:linear-gradient(180deg,rgba(16,19,33,.92),rgba(10,14,27,.86));border-radius:30px;padding:18px;position:sticky;top:18px;height:calc(100vh - 44px);display:flex;flex-direction:column;box-shadow:0 20px 80px rgba(0,0,0,.28);backdrop-filter:blur(18px)}.prdx-student-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.08)}.prdx-student-avatar,.prdx-student-brand img{width:62px;height:62px;border-radius:22px;background:#020617;border:1px solid rgba(255,255,255,.12);object-fit:cover;display:grid;place-items:center;font-weight:1000;color:#00d4ff;font-size:25px}.prdx-student-brand h2{font-size:15px;margin:0 0 4px;font-weight:1000}.prdx-student-brand p{font-size:11px;color:#94a3b8;margin:0;direction:ltr;text-align:right;word-break:break-all}.prdx-student-nav{display:grid;gap:8px;overflow:auto;padding-inline-end:2px}.prdx-student-nav button{border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.045);color:#e2e8f0;border-radius:16px;padding:12px 12px;text-align:right;font-weight:950;cursor:pointer;display:flex;align-items:center;gap:10px;position:relative;transition:.16s}.prdx-student-nav button span{width:34px;height:34px;border-radius:13px;display:grid;place-items:center;background:rgba(255,255,255,.06);font-size:10px;color:#94a3b8}.prdx-student-nav button i{margin-right:auto;background:#ef4444;color:#fff;min-width:22px;height:22px;border-radius:99px;display:grid;place-items:center;font-size:10px;font-style:normal}.prdx-student-nav button.active,.prdx-student-nav button:hover{background:linear-gradient(135deg,#00d4ff,#7c3aed);color:#00111a;transform:translateY(-1px)}.prdx-student-nav button.active span,.prdx-student-nav button:hover span{background:rgba(0,0,0,.16);color:#00111a}.prdx-student-side-foot{margin-top:auto;padding-top:14px}.prdx-student-main{display:grid;gap:16px;min-width:0}.prdx-student-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border:1px solid rgba(255,255,255,.1);background:rgba(16,19,33,.66);border-radius:30px;padding:18px;box-shadow:0 18px 70px rgba(0,0,0,.24);backdrop-filter:blur(18px)}.prdx-breadcrumb{font-size:11px;color:#94a3b8;margin-bottom:5px}.prdx-student-top h1{font-size:24px;margin:0;font-weight:1000}.prdx-student-top p{margin:6px 0 0;color:#94a3b8;font-size:12px;line-height:1.8}.prdx-student-actions,.prdx-form-actions,.prdx-card-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.prdx-student-btn,.prdx-link,.prdx-mini{border:0;border-radius:14px;padding:11px 14px;background:#00d4ff;color:#00111a;font-weight:1000;text-decoration:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:.15s}.prdx-student-btn:hover,.prdx-link:hover,.prdx-mini:hover{filter:brightness(1.06);transform:translateY(-1px)}.prdx-student-btn.secondary{background:#1f2937;color:#fff;border:1px solid rgba(255,255,255,.1)}.prdx-student-btn.gold{background:#d4af37;color:#050505}.prdx-student-btn:disabled{opacity:.55;cursor:not-allowed}.prdx-link{background:transparent;color:#00d4ff;padding:6px 8px}.prdx-mini{font-size:11px;padding:8px 10px;background:rgba(255,255,255,.07);color:#fff;border:1px solid rgba(255,255,255,.1);margin:2px}.prdx-profile-hero{border:1px solid rgba(255,255,255,.1);background:linear-gradient(135deg,rgba(0,212,255,.12),rgba(124,58,237,.1));border-radius:30px;padding:18px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.prdx-profile-id{display:flex;align-items:center;gap:14px}.prdx-profile-id img,.prdx-profile-id>div:first-child{width:78px;height:78px;border-radius:26px;background:#020617;border:1px solid rgba(255,255,255,.12);object-fit:cover;display:grid;place-items:center;color:#00d4ff;font-size:28px;font-weight:1000}.prdx-profile-id h2{margin:0 0 5px;font-size:20px}.prdx-profile-id p{margin:4px 0;color:#94a3b8;font-size:12px}.prdx-student-cards{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.prdx-student-card{border:1px solid rgba(255,255,255,.1);background:linear-gradient(180deg,rgba(16,19,33,.82),rgba(16,19,33,.58));border-radius:24px;padding:16px;min-height:118px;box-shadow:0 18px 60px rgba(0,0,0,.18)}.prdx-student-card span{display:block;color:#94a3b8;font-size:11px;margin-bottom:10px}.prdx-student-card b{font-size:24px;font-weight:1000}.prdx-student-card em{display:block;color:#64748b;font-size:10px;margin-top:7px;font-style:normal}.prdx-panel{border:1px solid rgba(255,255,255,.1);background:rgba(16,19,33,.75);border-radius:28px;padding:18px;box-shadow:0 18px 70px rgba(0,0,0,.20);min-width:0}.prdx-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}.prdx-panel h3{margin:0;font-size:17px;font-weight:1000}.prdx-panel-head span,.prdx-muted{color:#94a3b8;font-size:12px}.prdx-center{text-align:center;padding:42px}.prdx-center p{color:#94a3b8}.prdx-center.error{border-color:rgba(251,113,133,.35)}.prdx-list-tools{display:grid;grid-template-columns:minmax(220px,1fr) 180px 180px;gap:10px;margin-bottom:14px}.prdx-list-tools input,.prdx-list-tools select,.prdx-field input{width:100%;border:1px solid rgba(255,255,255,.11);background:#070a14;color:#fff;border-radius:15px;padding:12px 13px;outline:none}.prdx-list-tools input:focus,.prdx-list-tools select:focus,.prdx-field input:focus{border-color:rgba(0,212,255,.7);box-shadow:0 0 0 3px rgba(0,212,255,.08)}.prdx-course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:13px}.prdx-course-card{border:1px solid rgba(255,255,255,.1);border-radius:22px;overflow:hidden;background:rgba(255,255,255,.045);transition:.16s}.prdx-course-card:hover{transform:translateY(-2px);border-color:rgba(0,212,255,.35)}.prdx-course-img{height:148px;background:#020617;display:grid;place-items:center;color:#94a3b8}.prdx-course-img img{width:100%;height:100%;object-fit:cover}.prdx-course-body{padding:14px}.prdx-course-body h4{margin:0 0 8px;font-size:15px;font-weight:1000}.prdx-course-body p,.prdx-course-body small{display:block;color:#94a3b8;font-size:12px;line-height:1.8;margin:3px 0}.prdx-progress{height:9px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;margin:12px 0}.prdx-progress span{display:block;height:100%;background:linear-gradient(90deg,#00d4ff,#d4af37);box-shadow:0 0 18px rgba(0,212,255,.35)}.prdx-table-wrap{overflow:auto;border-radius:20px}.prdx-table{width:100%;border-collapse:separate;border-spacing:0 8px;min-width:880px}.prdx-table th{color:#94a3b8;font-size:11px;text-align:right;font-weight:800;padding:0 12px}.prdx-table td{background:rgba(255,255,255,.045);border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);padding:12px;font-size:12px;vertical-align:middle}.prdx-table td:first-child{border-radius:0 15px 15px 0;border-right:1px solid rgba(255,255,255,.08)}.prdx-table td:last-child{border-radius:15px 0 0 15px;border-left:1px solid rgba(255,255,255,.08)}.prdx-table code{direction:ltr;background:#020617;border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:6px 8px;color:#c4b5fd}.prdx-status{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;font-size:11px;font-weight:1000;background:rgba(148,163,184,.12);color:#cbd5e1;border:1px solid rgba(148,163,184,.18)}.prdx-status.active{background:rgba(52,211,153,.13);color:#86efac;border-color:rgba(52,211,153,.24)}.prdx-status.inactive{background:rgba(248,113,113,.12);color:#fecaca;border-color:rgba(248,113,113,.25)}.prdx-status.pending{background:rgba(212,175,55,.12);color:#fde68a;border-color:rgba(212,175,55,.25)}.prdx-empty{border:1px dashed rgba(255,255,255,.16);border-radius:22px;padding:34px;text-align:center;color:#94a3b8}.prdx-empty b{display:block;color:#e2e8f0;margin-bottom:6px}.prdx-empty p{margin:0;font-size:12px}.prdx-pager{display:flex;gap:6px;justify-content:center;margin-top:14px;flex-wrap:wrap}.prdx-pager button{width:36px;height:36px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);color:#fff;font-weight:900;cursor:pointer}.prdx-pager button.active{background:#00d4ff;color:#00111a}.prdx-notify-list{display:grid;gap:10px}.prdx-notify{border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.045);border-radius:18px;padding:14px;display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.prdx-notify.unread{border-color:rgba(0,212,255,.3);background:rgba(0,212,255,.07)}.prdx-notify b{display:block;margin-bottom:5px}.prdx-notify p{margin:0 0 6px;color:#cbd5e1;font-size:12px;line-height:1.9}.prdx-notify small{color:#64748b;font-size:11px}.prdx-player-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.prdx-player-card{border:1px solid rgba(255,255,255,.1);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));border-radius:24px;padding:18px;display:grid;gap:10px}.prdx-player-card h3{font-size:20px;margin:0}.prdx-player-card b{color:#00d4ff}.prdx-player-card p,.prdx-player-card small{color:#94a3b8;font-size:12px;line-height:1.9}.prdx-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.prdx-field label{display:block;color:#94a3b8;font-size:11px;margin-bottom:7px}.prdx-form-actions{margin-top:16px}.prdx-skeleton{background:linear-gradient(90deg,rgba(255,255,255,.04),rgba(255,255,255,.11),rgba(255,255,255,.04));background-size:200% 100%;animation:prdxSk 1.2s infinite;border-radius:24px;min-height:130px}.prdx-skeleton.big{min-height:210px}@keyframes prdxSk{to{background-position:-200% 0}}.prdx-student-toast{position:fixed;left:18px;bottom:18px;z-index:100000;background:#0f172a;color:#fff;border:1px solid rgba(0,212,255,.35);border-radius:16px;padding:12px 14px;box-shadow:0 16px 50px rgba(0,0,0,.45);font-size:12px;opacity:0;transform:translateY(8px);transition:.2s}.prdx-student-toast.show{opacity:1;transform:none}.prdx-student-toast.error{border-color:rgba(248,113,113,.45)}.prdx-modal{position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:99990;display:grid;place-items:center;padding:20px}.prdx-modal>div{width:min(620px,100%);background:#0f172a;border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:20px;position:relative;box-shadow:0 24px 90px rgba(0,0,0,.5)}.prdx-modal-close{position:absolute;left:14px;top:14px;width:34px;height:34px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);color:#fff;cursor:pointer}.prdx-modal dl{display:grid;grid-template-columns:150px 1fr;gap:8px;margin:14px 0 0}.prdx-modal dt{color:#94a3b8}.prdx-modal dd{margin:0;color:#fff;word-break:break-all}.prdx-admin-tools-bar{font-family:var(--prdx-font)!important}@media(max-width:1180px){.prdx-student-cards{grid-template-columns:repeat(3,1fr)}.prdx-student-layout{grid-template-columns:260px minmax(0,1fr)}}@media(max-width:900px){.prdx-student-layout{grid-template-columns:1fr}.prdx-student-sidebar{position:relative;top:0;height:auto}.prdx-student-nav{grid-template-columns:repeat(2,1fr)}.prdx-student-cards{grid-template-columns:repeat(2,1fr)}.prdx-list-tools{grid-template-columns:1fr}.prdx-form-grid{grid-template-columns:1fr}}@media(max-width:560px){.prdx-student-shell{padding:12px}.prdx-student-nav{grid-template-columns:1fr}.prdx-student-cards{grid-template-columns:1fr}.prdx-profile-hero{align-items:flex-start}.prdx-profile-id{align-items:flex-start}.prdx-student-top h1{font-size:20px}.prdx-modal dl{grid-template-columns:1fr}.prdx-student-btn,.prdx-mini{width:100%;}.prdx-card-actions .prdx-student-btn{width:auto}}

.prdx-student-entry-btn{position:fixed;left:22px;bottom:92px;z-index:99980;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:999px;background:linear-gradient(135deg,#00d4ff,#7c3aed);color:#020617!important;text-decoration:none!important;font-weight:900;font-size:13px;box-shadow:0 16px 46px rgba(0,212,255,.28);font-family:IRANSansX,IRANSansXFaNum,system-ui,Tahoma,sans-serif!important;border:1px solid rgba(255,255,255,.22)}
.prdx-student-entry-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
@media(max-width:640px){.prdx-student-entry-btn{left:14px;right:14px;bottom:16px;width:auto}}

/* Student panel critical UX fixes */
.prdx-lessons{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}.prdx-lessons li{display:flex;justify-content:space-between;gap:12px;align-items:center;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:10px 12px}.prdx-lessons li span{color:#b7c3d4;font-size:12px}.prdx-table code{user-select:all}.prdx-modal dl{display:grid;grid-template-columns:140px 1fr;gap:8px 12px}.prdx-modal dt{color:#94a3b8}.prdx-modal dd{margin:0;color:#fff}

/* Backend-connected panel spacing/performance polish: no layout rewrite */
.prdx-student-main{gap:20px}
.prdx-student-top{padding:22px;align-items:flex-start}.prdx-student-top h1{margin-top:4px;margin-bottom:8px;line-height:1.45}.prdx-student-top p{margin-top:8px;line-height:2}.prdx-profile-hero,.prdx-panel,.prdx-student-card{padding:22px}.prdx-panel{margin-top:2px}.prdx-panel-head{margin-bottom:18px;align-items:flex-start}.prdx-panel-head h3{line-height:1.55}.prdx-panel-head span{line-height:1.8;display:block;margin-top:4px}.prdx-course-grid,.prdx-player-grid,.prdx-notify-list{gap:16px}.prdx-course-body{padding:18px}.prdx-course-body h4{line-height:1.65;margin-bottom:10px}.prdx-course-body p,.prdx-course-body small{line-height:2}.prdx-table td{line-height:1.85}.prdx-list-tools{margin-bottom:18px;gap:12px}.prdx-student-nav{scrollbar-width:thin}.prdx-student-shell{contain:layout paint style}.prdx-student-card,.prdx-panel,.prdx-course-card,.prdx-player-card{will-change:auto}.prdx-center{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.prdx-empty{line-height:2}.prdx-skeleton{animation-duration:1.6s}
@media(max-width:900px){.prdx-student-top,.prdx-profile-hero,.prdx-panel{padding:18px}.prdx-student-main{gap:16px}}

/* Final stability fixes: readable hover/focus colors, one-click interactions, consistent spacing */
.prdx-student-shell,
.prdx-student-shell *{
  -webkit-tap-highlight-color: transparent;
}
.prdx-student-nav button,
.prdx-student-card,
.prdx-course-card,
.prdx-player-card,
.prdx-panel,
.prdx-mini,
.prdx-student-btn{
  color:#f8fafc!important;
}
.prdx-student-nav button:hover,
.prdx-student-nav button:focus,
.prdx-student-nav button.active{
  color:#f8fafc!important;
  background:rgba(0,212,255,.16)!important;
  border-color:rgba(0,212,255,.38)!important;
  transform:none!important;
}
.prdx-student-nav button:hover span,
.prdx-student-nav button:focus span,
.prdx-student-nav button.active span{
  color:#dff8ff!important;
  background:rgba(0,212,255,.14)!important;
}
.prdx-student-card:hover,
.prdx-course-card:hover,
.prdx-player-card:hover,
.prdx-panel:hover{
  color:#f8fafc!important;
  transform:none!important;
}
.prdx-student-card:hover *,
.prdx-course-card:hover *,
.prdx-player-card:hover *,
.prdx-panel:hover *{
  color:inherit;
}
.prdx-student-card span,
.prdx-course-body p,
.prdx-course-body small,
.prdx-muted,
.prdx-panel-head span{
  color:#a8b4c7!important;
}
.prdx-student-card b,
.prdx-course-body h4,
.prdx-panel h3,
.prdx-profile-id h2{
  color:#f8fafc!important;
}
.prdx-student-btn:not(.secondary):not(.gold),
.prdx-link:not(.secondary),
.prdx-pager button.active{
  color:#00111a!important;
}
.prdx-mini:hover,
.prdx-student-btn.secondary:hover{
  color:#fff!important;
}
.prdx-student-nav button,
.prdx-mini,
.prdx-student-btn,
.prdx-link,
.prdx-course-card [data-course-detail],
.prdx-table [data-copy],
.prdx-table a{
  pointer-events:auto!important;
  touch-action:manipulation;
}
.prdx-student-main{gap:22px!important}
.prdx-panel{padding:24px!important;margin:0!important}
.prdx-panel-head{margin-bottom:20px!important}
.prdx-student-top{padding:24px!important;margin-bottom:0!important}
.prdx-course-grid,.prdx-player-grid,.prdx-notify-list{gap:18px!important}
.prdx-student-cards{gap:16px!important}
.prdx-list-tools{gap:14px!important;margin-bottom:20px!important}