:root{
  --aw-bg:#f5f7fb;
  --aw-panel:#ffffff;
  --aw-border:#e5e7eb;
  --aw-text:#111827;
  --aw-muted:#6b7280;
  --aw-primary:#2563eb;
  --aw-primary-soft:#eff6ff;
  --aw-success:#16a34a;
  --aw-danger:#dc2626;
  --aw-warning:#d97706;
  --aw-dark:#111827;
  --aw-shadow:0 10px 30px rgba(15,23,42,.08);
  --aw-radius:1rem;
  --aw-sidebar:260px;
}

body.aw-body{
  background:var(--aw-bg);
  color:var(--aw-text);
}

.aw-shell{min-height:100vh;}
.aw-sidebar{
  width:var(--aw-sidebar);
  min-height:100vh;
  background:var(--aw-dark);
  color:#fff;
  position:fixed;
  top:0;
  left:0;
  z-index:1040;
  padding:1rem;
  transition:transform .25s ease;
}
.aw-brand{
  display:flex;
  align-items:center;
  gap:.75rem;
  padding:.75rem;
  border-radius:1rem;
  background:rgba(255,255,255,.05);
  margin-bottom:1rem;
}
.aw-brand-badge,
.aw-avatar{
  width:42px;
  height:42px;
  border-radius:.9rem;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(37,99,235,.18);
  color:#fff;
  font-weight:700;
}
.aw-brand small,
.aw-sidebar .text-secondary-light{color:rgba(255,255,255,.65)!important;}
.aw-sidebar .nav-link{
  color:rgba(255,255,255,.75);
  border-radius:.9rem;
  padding:.75rem .9rem;
  display:flex;
  align-items:center;
  gap:.75rem;
}
.aw-sidebar .nav-link:hover,
.aw-sidebar .nav-link.active{
  background:rgba(255,255,255,.09);
  color:#fff;
}
.aw-sidebar .nav-link i{font-size:1.05rem;}
.aw-sidebar-footer{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:1rem;
  margin-top:1rem;
}
.aw-main{
  margin-left:var(--aw-sidebar);
  min-height:100vh;
}
.aw-topbar{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(245,247,251,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--aw-border);
}
.aw-card{
  border:1px solid var(--aw-border);
  border-radius:var(--aw-radius);
  box-shadow:var(--aw-shadow);
}
.aw-page-title{font-weight:700;letter-spacing:-.02em;}
.aw-page-subtitle{color:var(--aw-muted);font-size:.95rem;}
.aw-stat-value{font-size:1.8rem;font-weight:700;line-height:1;}
.aw-link-input .form-control{background:#fff;}
.aw-chip{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  border-radius:999px;
  padding:.35rem .7rem;
  font-size:.8rem;
  font-weight:600;
}
.aw-chip.live{background:#fef2f2;color:var(--aw-danger);}
.aw-chip.draft{background:#fff7ed;color:var(--aw-warning);}
.aw-chip.closed{background:#f3f4f6;color:#4b5563;}
.aw-chip.public{background:#f0fdf4;color:var(--aw-success);}
.aw-chip.private{background:#eff6ff;color:var(--aw-primary);}
.aw-dot{width:.45rem;height:.45rem;border-radius:50%;background:currentColor;display:inline-block;}
.aw-lesson-card{height:100%;}
.aw-lesson-title{font-weight:700;font-size:1.02rem;}
.aw-room-code{color:var(--aw-muted);font-size:.9rem;}
.aw-empty{padding:3rem 1rem;text-align:center;color:var(--aw-muted);}
.aw-empty i{font-size:2rem;display:block;margin-bottom:.75rem;color:#94a3b8;}
.aw-modal .modal-content,
.aw-panel{border:1px solid var(--aw-border);border-radius:var(--aw-radius);box-shadow:var(--aw-shadow);}
.aw-video-stage{
  background:#0f172a;
  border-radius:1rem;
  min-height:420px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  overflow:hidden;
}
.aw-video-stage video{width:100%;height:100%;object-fit:contain;background:#000;}
.aw-video-placeholder{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  color:#cbd5e1;
  gap:.75rem;
  pointer-events:none;
}
.aw-chat-messages{height:380px;overflow:auto;background:#f8fafc;border:1px solid var(--aw-border);border-radius:.9rem;padding:1rem;}
.aw-msg{max-width:92%;}
.aw-msg .small{color:var(--aw-muted);}
.aw-msg-bubble{padding:.7rem .9rem;border-radius:1rem;background:#fff;border:1px solid var(--aw-border);}
.aw-msg.teacher .aw-msg-bubble{background:var(--aw-primary-soft);border-color:#bfdbfe;}
.aw-participants{max-height:430px;overflow:auto;}
.aw-setup-overlay{
  position:fixed;
  inset:0;
  background:rgba(15,23,42,.5);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:1rem;
  z-index:1055;
}
.aw-setup-card{max-width:420px;width:100%;}
.aw-toast-wrap{position:fixed;top:1rem;right:1rem;z-index:1080;}
.aw-auth-page{min-height:100vh;background:#eef2ff;}
.aw-auth-side{background:linear-gradient(135deg,#1d4ed8,#111827);color:#fff;}
.aw-auth-card{width:100%;max-width:460px;}
.aw-code-input{width:52px;height:56px;text-align:center;font-size:1.35rem;font-weight:700;}
.aw-section-title{font-weight:700;font-size:1rem;}

@media (max-width: 991.98px){
  .aw-sidebar{transform:translateX(-100%);}
  body.aw-sidebar-open .aw-sidebar{transform:translateX(0);}
  .aw-main{margin-left:0;}
  body.aw-sidebar-open{overflow:hidden;}
  .aw-sidebar-backdrop{
    position:fixed;
    inset:0;
    background:rgba(15,23,42,.45);
    z-index:1035;
    display:none;
  }
  body.aw-sidebar-open .aw-sidebar-backdrop{display:block;}
}

@media (max-width: 767.98px){
  .aw-video-stage{min-height:260px;}
  .aw-chat-messages{height:300px;}
}