* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  height: 100vh;
  background: radial-gradient(circle at top, #1b2a41, #0b1626);
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.container {
  text-align: center;
  animation: fadeIn 1s ease;
}

h1 {
  margin-bottom: 15px;
}

/* ✅ Correct camera container */
.video-box {
  position: relative;
  width: 380px;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  border: 3px solid #00ffcc;
  box-shadow: 0 0 25px rgba(0, 255, 204, 0.8);
}

/* ✅ FULL CAMERA – NO HALF ISSUE */
video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ok {
  margin-top: 12px;
  font-size: 18px;
  color: #00ff99;
}

.alert {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #ff0033;
  padding: 14px 20px;
  border-radius: 10px;
  display: none;
  font-weight: bold;
  animation: shake 0.4s;
}

@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
  100% { transform: translateX(0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}