body {
  margin: 0;
  padding: 20px;
  background-color: #000;
  color: white;
  font-family: 'Courier New', monospace;
  font-size: 5vw; /* ← スマホ画面に応じて文字サイズ変化 */
}

#header-bar {
  position: relative;
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6));
  padding: 30px 20px;
  display: flex;
  flex-direction: column;  /* ← 縦に並べる（スマホ向け） */
  align-items: center;
  text-align: center;
  border-bottom: 1px solid #444;
}

.user,
.title,
.clock {
  margin: 5px 0;
}

.profile-image {
  height: auto;
  width: 30vw;              /* ← スマホ幅に応じたサイズ */
  max-width: 100px;
  border: 2px solid #66ccff;
  object-fit: contain;
  background-color: #000;
  margin-top: 10px;
}

#terminal {
  white-space: pre-wrap;
  overflow-x: auto;
  word-break: break-word;
  margin-top: 30px;
}

.cursor {
  display: inline-block;
  width: 10px;
  background-color: white;
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

footer {
  font-size: 3vw;  /* ← スマホ向けに縮小 */
  color: #888;
  text-align: center;
  margin-top: 40px;
}