:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  color: #f6f6f7;
  background-color: #151515;
  background-image:
    linear-gradient(90deg, rgba(255, 183, 0, .08) 1px, transparent 1px),
    linear-gradient(rgba(255, 183, 0, .08) 1px, transparent 1px),
    radial-gradient(circle at 25% 20%, rgba(255, 183, 0, .08), transparent 32%),
    radial-gradient(circle at 75% 75%, rgba(255, 183, 0, .06), transparent 35%);
  background-size: 42px 42px, 42px 42px, auto, auto;
}

.bgx-page {
  width: min(100% - 32px, 520px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 54px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 28px;
}

.bgx-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.bgx-brand img {
  width: 138px;
  height: 138px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, .38);
}

.bgx-product {
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 800;
  letter-spacing: .03em;
  text-shadow: 0 3px 16px rgba(0, 0, 0, .75);
}

nav { display: flex; gap: 8px; }

nav a {
  padding: 5px 9px;
  border-radius: 8px;
  color: #aaa;
  text-decoration: none;
  font-size: 12px;
}

nav a[aria-current="page"] {
  color: #161616;
  background: #ffbe0b;
}

.bgx-card {
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 18px;
  background: rgba(41, 41, 43, .96);
  box-shadow: 0 28px 80px rgba(0, 0, 0, .48);
  backdrop-filter: blur(12px);
}

.bgx-card h1 {
  margin: 0;
  text-align: center;
  font-size: 28px;
}

.bgx-card > p {
  margin: 8px 0 24px;
  color: #a9a9ad;
  text-align: center;
}

.bgx-card form { display: grid; gap: 10px; }

.bgx-card label {
  color: #c7c7ca;
  font-size: 13px;
  font-weight: 650;
}

.bgx-card input {
  width: 100%;
  height: 52px;
  margin-bottom: 7px;
  padding: 0 16px;
  border: 1px solid #49494e;
  border-radius: 10px;
  outline: none;
  background: #19191b;
  color: #fff;
  font: inherit;
  transition: border-color .15s, box-shadow .15s;
}

.bgx-card input:focus {
  border-color: #ffbe0b;
  box-shadow: 0 0 0 3px rgba(255, 190, 11, .14);
}

.bgx-card button {
  height: 50px;
  margin-top: 6px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #ffd60a, #ffad0a);
  color: #17130a;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.bgx-card button:hover { filter: brightness(1.05); }

.bgx-error {
  margin: 0 0 16px;
  padding: 11px 13px;
  border: 1px solid rgba(255, 75, 75, .4);
  border-radius: 9px;
  background: rgba(255, 45, 45, .1);
  color: #ff8585;
  text-align: center;
  font-size: 14px;
}

@media (max-width: 560px) {
  .bgx-page { padding: 28px 0; justify-content: flex-start; }
  .bgx-brand img { width: 112px; height: 112px; }
  .bgx-card { padding: 24px 18px; }
}