:root{
  --glass-bg: rgba(255,255,255,.80);
  --glass-bd: rgba(255,255,255,.42);
  --shadow: 0 28px 80px rgba(0,0,0,.28);
  --shadow2: 0 14px 35px rgba(0,0,0,.18);
  --radius: 22px;
}
body{
  min-height:100vh;
  margin:0;
  background: #0b1220;
  overflow-x:hidden;
}

/* ===== 3D stage ===== */
.stage{ perspective: 1200px; transform-style: preserve-3d; }
.panel{
  width: min(980px, 96vw);
  border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow:hidden;
  transform: translateZ(0) rotateX(0deg) rotateY(0deg);
  transition: transform .18s ease, box-shadow .18s ease;
  position: relative;
}
.panel::before{
  content:"";
  position:absolute; inset:-2px;
  border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(135deg, rgba(255,255,255,.55), rgba(255,255,255,0));
  pointer-events:none;
  opacity:.55;
  mask: linear-gradient(#000, transparent 55%);
}
.panel-grid{
  display:grid;
  grid-template-columns: 1.05fr 1fr;
  min-height: 520px;
}

/* ===== Left ===== */
.panel-left{
  padding: 28px 26px;
  position: relative;
  background:
    radial-gradient(900px 400px at 15% 20%, rgba(56,189,248,.22), transparent 55%),
    radial-gradient(700px 380px at 90% 30%, rgba(168,85,247,.18), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,0));
}
.panel-left::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(90deg, rgba(0,0,0,.06), rgba(0,0,0,0));
  pointer-events:none;
}
.brand-logo{ display:flex; align-items:center; gap:12px; margin-bottom: 18px; }
.brand-logo img{
  max-height:72px; max-width:250px; object-fit:contain;
  background: rgba(255,255,255,.60);
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: var(--shadow2);
}
.brand-title{
  font-weight:900;
  letter-spacing:.2px;
  font-size: 30px;
  color:#0b1220;
  margin-top: 6px;
}
.brand-sub{ font-size:14px; color: rgba(11,18,32,.72); margin-top:6px; max-width: 420px; }
.brand-badges{ display:flex; gap:10px; flex-wrap:wrap; margin-top: 18px; }
.badge-pill{
  display:inline-flex; align-items:center; gap:8px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(255,255,255,.52);
  color: rgba(11,18,32,.82);
  font-size: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,.10);
}

/* ===== Right ===== */
.panel-right{
  padding: 26px 26px 24px;
  background: rgba(255,255,255,.22);
  border-left: 1px solid rgba(255,255,255,.35);
}
.form-title{ font-weight: 800; font-size: 18px; color:#0b1220; margin-bottom: 10px; }
.form-control{
  border-radius: 14px;
  padding: 12px 12px;
  border: 1px solid rgba(11,18,32,.10);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.65);
}
.btn{ border-radius: 14px; padding: 12px 12px; }
.hint{ font-size:12px; color: rgba(11,18,32,.70); }
.divider{ height:1px; background: rgba(11,18,32,.08); margin:14px 0; }

/* QR container (SVG render) */
.qr-box{
  background:#fff;
  padding:12px;
  border-radius:12px;
  border:1px solid rgba(11,18,32,.12);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
#qrRender svg{
  display:block;
  width:300px;
  height:300px;
}

.footer-mini{
  text-align:center;
  color: rgba(255,255,255,.72);
  font-size:12px;
  margin-top: 14px;
}

@media (max-width: 820px){
  .panel{ width: min(520px, 96vw); }
  .panel-grid{ grid-template-columns: 1fr; min-height: unset; }
  .panel-right{ border-left:0; border-top: 1px solid rgba(255,255,255,.35); }
  .brand-title{ font-size: 26px; }
}

html, body { height: 100%; }
.page{
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 18px;
  box-sizing: border-box;
}
.stage{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 14px;
}

/* BG */
.bg-wrap{
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(56,189,248,.35), transparent 60%),
    radial-gradient(900px 500px at 90% 30%, rgba(168,85,247,.30), transparent 55%),
    radial-gradient(800px 500px at 45% 90%, rgba(34,197,94,.18), transparent 55%),
    linear-gradient(180deg, #0b1220, #0a0f1d);
}
.bg-image{
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: blur(2px) saturate(1.05);
  transform: scale(1.03);
  opacity: .92;
}
.bg-overlay{
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,15,29,.86), rgba(10,15,29,.35));
}

/* ===== Fix focus nháy khi click input (disable tilt on form) ===== */
.panel-right, .panel-right *{
  transform: none !important;
}

@media (prefers-reduced-motion: reduce){
  #loginPanel{ transition: none !important; }
}

/* Khi đang focus input => không tilt */
#loginPanel.no-tilt{
  transform: translateZ(0) rotateX(0deg) rotateY(0deg) !important;
}

/* Optional: giảm "giật" do compositing */
#loginPanel{ will-change: transform; }

.brand-media{
  margin-top: 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.55);
  background: rgba(255,255,255,.55);
  box-shadow: 0 14px 35px rgba(0,0,0,.12);
  overflow: hidden;
}
.brand-media .media-inner{ padding: 10px; }
.brand-media img{
  width:100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  display:block;
}
.brand-media video{
  width:100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  display:block;
  background:#000;
}
.media-dots{
  display:flex; gap:6px; justify-content:center; padding:8px 0 2px;
}
.media-dots button{
  width:7px;height:7px;border-radius:999px;border:0;
  background: rgba(11,18,32,.25);
}
.media-dots button.active{ background: rgba(11,18,32,.70); }

#btnLoadMediaVideo{ border-radius: 999px; padding: 8px 10px; }
#mediaVideoHint{ opacity:.85; }

/* media switch buttons */
.media-toolbar{
  display:flex;
  gap:8px;
  align-items:center;
  justify-content:flex-end;
  margin-top:8px;
}
.media-toolbar .btn-xs{
  border-radius:999px;
  padding:6px 10px;
  font-size:12px;
  line-height:1;
}
.media-toolbar .hint-xs{
  font-size:12px;
  color: rgba(11,18,32,.65);
  margin-right:auto;
}
.media-pane{ display:none; }
.media-pane.active{ display:block; }