body {
  margin: 0;
  min-height: 100vh;
  padding: 16px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: #008080; /* Windows 95 teal */
  font-family: Tahoma, "MS Sans Serif", Geneva, sans-serif;
  font-size: 14px;
}

.window {
  width: 100%;
  max-width: 360px;
  background: #c0c0c0;
  border: 2px solid;
  border-color: #fff #000 #000 #fff;
  box-shadow: inset -1px -1px #808080, inset 1px 1px #dfdfdf;
  padding: 3px;
}

.titlebar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 4px;
  background: linear-gradient(90deg, #000080, #1084d0);
  color: #fff;
  font-weight: bold;
}

.titlebar-buttons span {
  display: inline-block;
  width: 16px;
  margin-left: 2px;
  background: #c0c0c0;
  color: #000;
  text-align: center;
  font-size: 11px;
  border: 1px solid;
  border-color: #fff #000 #000 #fff;
}

.window-body {
  padding: 12px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

input {
  font: inherit;
  padding: 4px;
  border: 2px solid;
  border-color: #808080 #fff #fff #808080;
  background: #fff;
}

.buttons {
  display: flex;
  justify-content: flex-end;
}

button {
  font: inherit;
  min-width: 80px;
  padding: 4px 12px;
  background: #c0c0c0;
  border: 2px solid;
  border-color: #fff #000 #000 #fff;
  cursor: pointer;
}

button:active {
  border-color: #000 #fff #fff #000;
}

.error {
  margin: 0 0 10px;
  padding: 6px;
  background: #ffff00;
  color: #c00000;
  font-weight: bold;
  border: 1px dashed #c00000;
}

.blink {
  margin: 0;
  color: #ffff00;
  font-family: "Comic Sans MS", "Comic Sans", cursive;
  font-size: 28px;
  font-weight: bold;
  text-shadow: 2px 2px #000;
  animation: blink 1s steps(1) infinite;
}

.footer {
  margin: 0;
  color: #fff;
  font-size: 12px;
}

@keyframes blink {
  50% {
    visibility: hidden;
  }
}