/* Change 3: scoped nested Classroom in RizSimulation Player; premium design locked. */
#view-player .rz-c155-tabs{display:flex;align-items:center;gap:8px;margin:10px 0 20px;flex-wrap:wrap}
#view-player .rz-c155-tab{border:1px solid #c6dedc;border-radius:999px;padding:8px 17px;min-height:39px;font:inherit;font-size:.78rem;font-weight:800;color:#19535d;background:#fff;cursor:pointer}
#view-player .rz-c155-tab[aria-selected=true]{background:#e5f6f2;border-color:#80c3b9;color:#087d76;box-shadow:0 3px 11px #0d5f6210}
#view-player .rz-c155-tab:focus-visible,#view-player .rz-c155-start:focus-visible{outline:3px solid #74c4bd;outline-offset:3px}
#view-player.rz-c155-classroom .player-layout,#view-player.rz-c155-classroom>.content-shell>.student-heading{display:none!important}
#view-player:not(.rz-c155-classroom) #rzC155Classroom{display:none!important}
#view-player .rz-c155-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:13px;margin-bottom:16px;flex-wrap:wrap}
#view-player .rz-c155-heading span{color:#118e86;font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;font-weight:850}
#view-player .rz-c155-heading h1{font-size:clamp(1.43rem,2.5vw,2rem);color:#113647;margin:5px 0 0}
#view-player .rz-c155-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px;align-items:stretch}
#view-player .rz-c155-panel{min-width:0;min-height:330px;background:linear-gradient(145deg,#fff,#f5fbfa);border:1px solid #cfe6e1;border-radius:21px;padding:clamp(17px,2vw,25px);box-shadow:0 14px 38px #1339430c;display:flex;flex-direction:column;gap:12px}
#view-player .rz-c155-top{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}
#view-player .rz-c155-eyebrow{font-size:.66rem;color:#168b86;font-weight:850;letter-spacing:.115em;text-transform:uppercase}
#view-player .rz-c155-panel h2{color:#0e3449;font-size:clamp(1.16rem,1.85vw,1.45rem);line-height:1.27;margin:0}
#view-player .rz-c155-panel p{color:#577580;font-size:.82rem;line-height:1.63;margin:0}
#view-player .rz-c155-state{display:inline-flex;align-items:center;gap:9px;width:max-content;max-width:100%;border-radius:999px;background:#fff3f2;border:1px solid #f0ceca;color:#a92736;font-weight:800;font-size:.72rem;padding:6px 10px}
#view-player .rz-c155-state.offline{color:#526c77;background:#eef3f5;border-color:#d8e3e5}
#view-player .rz-c155-dot{width:9px;height:9px;flex:none;border-radius:100%;background:#d52c3d;box-shadow:0 0 0 3px #f6d3d7;animation:rzC155Pulse 1.55s ease-in-out infinite}
#view-player .rz-c155-state.offline .rz-c155-dot{background:#869da5;box-shadow:none;animation:none}
#view-player .rz-c155-start{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:12px;padding:12px 19px;min-height:46px;margin-top:auto;color:white;background:#078982;font:inherit;font-size:.83rem;font-weight:850;cursor:pointer}
#view-player .rz-c155-start:disabled{opacity:.55;cursor:not-allowed}
#view-player .rz-c155-status{font-size:.73rem;color:#587681;min-height:18px;line-height:1.45}
#view-player .rz-c155-status[data-error=true]{color:#9c303b}
#view-player .rz-c155-resources{overflow:auto;max-height:min(53vh,510px);display:grid;gap:9px;align-content:start}
#view-player .rz-c155-material{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid #dce9e8;border-radius:12px;padding:10px;min-width:0}
#view-player .rz-c155-material-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#077e7b;background:#e9f7f4;font-weight:850;font-size:11px;flex:none}
#view-player .rz-c155-material-name{flex:1;min-width:0}
#view-player .rz-c155-material-name strong{display:block;color:#173e4e;font-size:.79rem;overflow-wrap:anywhere}
#view-player .rz-c155-material-name small{display:block;color:#69838e;font-size:.68rem;line-height:1.45;margin-top:2px}
#view-player .rz-c155-material button{flex:none;border:1px solid #bcd9d3;background:#f4faf9;color:#0d7874;border-radius:9px;font:inherit;font-size:.72rem;font-weight:850;padding:8px 10px;cursor:pointer}
#view-player .rz-c155-empty{flex:1;display:grid;align-content:center;justify-items:center;gap:10px;min-height:190px;text-align:center;padding:18px 6px}
#view-player .rz-c155-empty-icon{display:grid;place-items:center;width:56px;height:56px;color:#118d86;background:#e9f7f3;border:1px solid #cbe6df;border-radius:19px;font-size:27px}
#view-player .rz-c155-empty strong{color:#174653;font-size:.91rem}
#view-player .rz-c155-empty p{max-width:270px}
.rz-c155-erp{border:1px solid #d6e7e4;border-radius:22px;padding:0;max-width:min(430px,calc(100vw - 28px));width:100%;background:#fff;box-shadow:0 26px 80px #06354536;color:#153b49}
.rz-c155-erp::backdrop{background:#0927328c;backdrop-filter:blur(4px)}
.rz-c155-erp-inner{padding:28px;display:grid;gap:14px}
.rz-c155-erp h2{font-size:1.35rem;margin:0}
.rz-c155-erp p{font-size:.81rem;line-height:1.6;color:#617d85;margin:0}
.rz-c155-erp label{display:grid;gap:7px;font-size:.76rem;font-weight:800}
.rz-c155-erp input[type=text]{width:100%;border-radius:10px;border:1px solid #b8d6d1;padding:12px 13px;font-size:1rem}
.rz-c155-erp .rz-c155-remember{display:flex;align-items:center;gap:9px;color:#7e9099;font-weight:650;opacity:.8}
.rz-c155-erp .rz-c155-remember input{width:16px;height:16px;accent-color:#0d9087}
.rz-c155-erp .rz-c155-error{color:#a3333e;font-size:.74rem;min-height:17px}
.rz-c155-erp .rz-c155-actions{display:flex;align-items:center;gap:9px;justify-content:flex-end}
.rz-c155-erp button{border:1px solid #c1dcd7;border-radius:10px;padding:10px 15px;background:#f2f8f7;color:#0b6667;font-weight:800;cursor:pointer}
.rz-c155-erp button.primary{color:#fff;background:#087f80;border-color:#087f80}
.rz-c155-erp button:disabled{opacity:.5;cursor:wait}
@keyframes rzC155Pulse{0%,100%{box-shadow:0 0 0 2px #f6d3d7;opacity:1}50%{box-shadow:0 0 0 7px #ffebed;opacity:.72}}
@media(max-width:760px){#view-player .rz-c155-grid{grid-template-columns:minmax(0,1fr)}#view-player .rz-c155-panel{min-height:250px}#view-player .rz-c155-resources{max-height:310px}}
@media(prefers-reduced-motion:reduce){#view-player .rz-c155-dot{animation:none}.rz-c155-erp::backdrop{backdrop-filter:none}}

/* V15.5.2: Class Resources belong inside the right-hand Classroom panel.
   Keep old authorised data targets in the DOM for existing code, but never
   display a second published-material strip below the two-panel Classroom. */
#view-player.rz-c155-classroom #rzStudentPlayerMaterials,
#view-player.rz-c155-classroom #rzV154SessionResources{display:none!important}
#view-player.rz-c155-classroom #rzC155Resources{min-height:0;max-height:min(55vh,520px);overflow-y:auto;overflow-x:hidden;align-content:start;padding:1px 2px 2px}
#view-player.rz-c155-classroom .rz-c155-material{padding:10px 11px;gap:12px;background:#fff;border-color:#cfe5e0;transition:border-color .14s,background .14s}
#view-player.rz-c155-classroom .rz-c155-material:hover{border-color:#91c9c0;background:#f8fcfb}
#view-player.rz-c155-classroom .rz-c155-material-name{min-width:0}
#view-player.rz-c155-classroom .rz-c155-material-name strong{line-height:1.35}
#view-player.rz-c155-classroom .rz-c155-material-name small{overflow-wrap:anywhere}
#view-player.rz-c155-classroom .rz-c155-material button{min-height:37px;white-space:nowrap;flex:none}
#view-player.rz-c155-classroom .rz-c155-material button:focus-visible{outline:3px solid #87cfc1;outline-offset:2px}
@media(max-width:520px){#view-player.rz-c155-classroom .rz-c155-material{gap:9px;padding:9px 8px}#view-player.rz-c155-classroom .rz-c155-material button{padding:7px 9px}}

/* V15.5.3 — a strict two-purpose Find a Class view. The existing Code Entry
   card and its verification controls stay unchanged. Legacy session details,
   identity information, actions and material strips remain mounted only for
   compatibility, never visibly duplicated across Player subtabs. */
#view-player>.content-shell>.student-heading{display:none!important}
#view-player .player-layout>#resolvedSessionCard{display:none!important}
#view-player #rzStudentPlayerMaterials,
#view-player #rzV154SessionResources{display:none!important}
#view-player:not(.rz-c155-classroom) .player-layout{
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
 align-items:stretch;gap:18px;margin-top:14px
}
#view-player:not(.rz-c155-classroom) .player-layout>.player-entry{
 width:100%;min-width:0;align-self:stretch
}
#view-player .rz-c156-live-panel{
 display:flex;flex-direction:column;gap:13px;
 min-width:0;padding:26px;background:linear-gradient(145deg,#fff,#f3faf8);
 border:1px solid #cfe6df;border-radius:22px;box-shadow:0 9px 28px #0419280b
}
#view-player.rz-c155-classroom #rzC156LiveList{display:none!important}
#view-player .rz-c156-kicker{
 color:#138781;font-size:.65rem;font-weight:850;
 letter-spacing:.115em;text-transform:uppercase
}
#view-player .rz-c156-live-panel h2{
 margin:0 0 2px;color:#113d4d;font-size:1.14rem;line-height:1.3
}
#view-player .rz-c156-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
#view-player .rz-c156-item{
 border:1px solid #cfe1dd;border-radius:14px;
 background:#fff;padding:14px;display:grid;gap:10px;min-width:0
}
#view-player .rz-c156-item-top{
 display:flex;align-items:flex-start;justify-content:space-between;gap:9px;flex-wrap:wrap
}
#view-player .rz-c156-class-name{
 font-size:.9rem;line-height:1.45;color:#143e4c;overflow-wrap:anywhere
}
#view-player .rz-c156-live-state{
 display:inline-flex;align-items:center;gap:8px;
 padding:5px 9px;border:1px solid #f0cfcf;border-radius:999px;
 background:#fff5f5;color:#ab3040;font-weight:850;font-size:.69rem;white-space:nowrap
}
#view-player .rz-c156-live-state .rz-c155-dot{flex:none}
#view-player .rz-c156-subtitle{font-size:.74rem;line-height:1.4;color:#6b8088;margin:0}
#view-player .rz-c156-leave{
 display:inline-flex;align-items:center;justify-content:center;
 min-height:38px;width:max-content;max-width:100%;padding:8px 13px;
 border:1.5px dashed #d56a73;border-radius:11px;background:#fff4f4;
 color:#a72e3c;font:inherit;font-size:.76rem;font-weight:850;
 cursor:pointer;transition:background .15s,border-color .15s
}
#view-player .rz-c156-leave:hover{background:#ffe8e8;border-color:#bb3c4d}
#view-player .rz-c156-leave:focus-visible{
 outline:3px solid #f0a5a8;outline-offset:3px
}
#view-player .rz-c156-leave-classroom{flex:none;align-self:center}
#view-player .rz-c156-empty{
 flex:1;display:flex;flex-direction:column;gap:9px;
 align-items:center;justify-content:center;text-align:center;min-height:155px;padding:7px
}
#view-player .rz-c156-empty-icon{
 display:grid;place-items:center;width:49px;height:49px;border-radius:15px;
 background:#e6f6f2;border:1px solid #cbe5de;color:#118780;font-size:22px
}
#view-player .rz-c156-empty strong{color:#194652;font-size:.86rem}
#view-player .rz-c156-empty p{
 max-width:290px;margin:0;color:#71838c;font-size:.75rem;line-height:1.6
}
@media(max-width:760px){
 #view-player:not(.rz-c155-classroom) .player-layout{
  grid-template-columns:minmax(0,1fr);gap:12px
 }
 #view-player .rz-c156-live-panel{padding:18px;min-height:195px}
 #view-player .rz-c156-leave-classroom{align-self:flex-start}
}
@media(prefers-reduced-motion:reduce){
 #view-player .rz-c156-leave{transition:none}
}