body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
  box-sizing: border-box;
  background-color: #0a0a0a;
  color: #ffffff;
  overflow-x: hidden;
  position: relative;
}

body::before,
body::after {
  content: '';
  position: fixed;
  top: 0;
  width: 1px;
  height: 100vh;
  z-index: 500;
  pointer-events: none;
}

iframe {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  border: none;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
  filter: blur(15px);
  transform: scale(1.06);
}

.container {
  width: 100%;
  max-width: 420px;
  padding: 32px;
  border-radius: 22px;
  text-align: center;
  background: rgba(10, 10, 10, 0.72);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
}

h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-family: "SN Pro", sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
}

p {
  font-size: 14px;
  line-height: 1.6;
  color: #d8d8d8;
}

p a {
  color: #ffffff;
  text-decoration: none;
}

p a:hover {
  text-decoration: underline;
}

.form-group {
  margin-bottom: 16px;
  text-align: left;
}

label {
  display: block;
  margin-bottom: 7px;
  font-weight: 600;
  color: #f5f5f5;
}

input[type="email"],
input[type="password"],
input[type="file"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

input::placeholder {
  color: #c8c8c8;
}

button {
  width: 100%;
  padding: 12px 16px;
  border: none;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  cursor: pointer;
  color: #ffffff;
  background: linear-gradient(90deg, rgba(255,255,255,0.14), rgba(255,255,255,0.06));
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(255,255,255,0.22) 50%, transparent 80%);
  transform: translateX(-140%);
  transition: transform 0.55s ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 255, 255, 0.12);
  background: linear-gradient(90deg, rgba(255,255,255,0.22), rgba(255,255,255,0.1));
}

button:hover::before {
  transform: translateX(140%);
}

#admin-section {
  border-top: 2px solid rgba(255, 255, 255, 0.16);
  padding-top: 18px;
  margin-top: 8px;
}

.btn-logout {
  margin-top: 16px;
  background: linear-gradient(90deg, rgba(255, 77, 77, 0.9), rgba(180, 30, 30, 0.95));
}

.btn-logout:hover {
  background: linear-gradient(90deg, rgba(255, 90, 90, 1), rgba(200, 35, 35, 1));
}

@media (max-width: 600px) {
  body {
    padding: 16px;
  }

  .container {
    padding: 24px 18px;
  }

  h2 {
    font-size: 22px;
  }

  p {
    font-size: 12px;
  }

  input[type="email"],
  input[type="password"],
  input[type="file"] {
    padding: 11px 13px;
  }

  button {
    padding: 11px 14px;
    font-size: 13px;
  }
}