:root{
  --knl-accent: #f7c948;            /* vàng thương hiệu */
  --knl-accent2: #ffffff;           /* trắng */
  --knl-bg: rgba(7, 10, 18, .62);   /* overlay */
  --knl-card: rgba(18, 24, 38, .78);
  --knl-border: rgba(255,255,255,.10);
  --knl-text: rgba(255,255,255,.92);
  --knl-muted: rgba(255,255,255,.68);
  --knl-radius: 18px;
  --knl-shadow: 0 24px 60px rgba(0,0,0,.40);
}

/* overlay */
.knl-overlay{
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--knl-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 999999;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}

.knl-overlay.is-show{
  opacity: 1;
  pointer-events: auto;
}

.knl-card{
  width: min(420px, calc(100vw - 40px));
  border-radius: var(--knl-radius);
  background: var(--knl-card);
  border: 1px solid var(--knl-border);
  box-shadow: var(--knl-shadow);
  overflow: hidden;
  transform: translateY(6px) scale(.985);
  transition: transform .18s ease;
}

.knl-overlay.is-show .knl-card{
  transform: translateY(0) scale(1);
}

/* top glow */
.knl-top{
  height: 64px;
  background:
    radial-gradient(140px 60px at 20% 30%, rgba(247,201,72,.45), rgba(247,201,72,0) 70%),
    radial-gradient(160px 70px at 75% 40%, rgba(255,255,255,.22), rgba(255,255,255,0) 70%),
    linear-gradient(90deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border-bottom: 1px solid var(--knl-border);
}

.knl-body{
  padding: 18px 18px 16px;
}

/* brand row */
.knl-brand{
  display: flex; align-items: center; gap: 12px;
}

.knl-logo{
  width: 44px; height: 44px;
  border-radius: 14px;
  display: grid; place-items: center;
  background:
    linear-gradient(135deg, rgba(247,201,72,.20), rgba(255,255,255,.08)),
    rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 12px 24px rgba(0,0,0,.28);
}

.knl-logo svg{
  width: 26px; height: 26px;
  filter: drop-shadow(0 8px 18px rgba(0,0,0,.35));
}

.knl-title{
  font-size: 14px;
  font-weight: 700;
  color: var(--knl-text);
  letter-spacing: .2px;
  line-height: 1.15;
}
.knl-sub{
  margin-top: 2px;
  font-size: 12px;
  color: var(--knl-muted);
  line-height: 1.25;
}

/* spinner */
.knl-row{
  margin-top: 14px;
  display: flex; align-items: center; gap: 12px;
}

.knl-spinner{
  width: 22px; height: 22px;
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,.14);
  border-top-color: var(--knl-accent);
  animation: knl-spin .8s linear infinite;
}

@keyframes knl-spin{ to { transform: rotate(360deg);} }

/* progress */
.knl-progress{
  margin-top: 12px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.10);
}
.knl-bar{
  height: 100%;
  width: 35%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(247,201,72,.92), rgba(255,255,255,.65));
  animation: knl-bar 1.1s ease-in-out infinite;
}

@keyframes knl-bar{
  0%{ transform: translateX(-40%); width: 35%; }
  50%{ transform: translateX(60%); width: 55%; }
  100%{ transform: translateX(160%); width: 35%; }
}

/* tiny footer */
.knl-foot{
  padding: 12px 18px 14px;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--knl-border);
  color: rgba(255,255,255,.55);
  font-size: 11px;
}

.knl-tag{
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.06);
}