@font-face {
  font-family: 'FusionPixel';
  src: url('assets/fonts/fusion-pixel-12px-proportional-zh_hans.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap; /* 可选，保证字体加载慢时有 fallback */
}

body, input, button, textarea {
  font-family: 'FusionPixel', 'Press Start 2P';
  font-size: 14px; 
  image-rendering: pixelated;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.5px;
}

:root{
  --bg: #071018;
  --panel: #0f1720;
  --muted: #9aa8b2;
  --accent: #7ef;
  --chat-bg: #071018;
  --bubble: #111827;
  --bubble-user: #0ea5a1;
}

/* Pixel / retro feel */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Press Start 2P", system-ui, monospace;
  background: linear-gradient(180deg,#021018 0%, #061622 100%);
  color:#dbeafe;
}

/* container */
.wrap{
  max-width:960px;
  height:100vh;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:0.5rem;
  padding:0.8rem;
}

/* topbar */
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:rgba(0,0,0,0.25);
  border:3px solid rgba(255,255,255,0.03);
  padding:0.75rem 1rem;
  border-radius:8px;
  box-shadow: 0 6px 18px rgba(2,6,23,0.6);
}
.logo{font-size:0.9rem}
.status{
  font-size:10px;
  padding:4px 8px;
  border-radius:6px;
  background:rgba(0,0,0,0.45);
  color:var(--muted);
}
.status.online{
  color:#042;
  background: #7ef;
  box-shadow: 0 2px 8px rgba(126, 239, 255, 0.08) inset;
}

/* chat area */
.chat-area{
  flex:1;
  overflow:hidden;
  border-radius:8px;
  padding:0.75rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border:2px solid rgba(255,255,255,0.03);
}

.messages{
  height:100%;
  overflow:auto;
  padding:6px;
  display:flex;
  flex-direction:column;
  gap:8px;
}

/* message */
.msg{
  display:flex;
  gap:10px;
  align-items:flex-start;
  transform:translateY(6px) scale(0.98);
  opacity:0;
  transition:all 160ms cubic-bezier(.2,.9,.3,1);
}
.msg.visible{
  transform:none;
  opacity:1;
}

/* avatar: pixel square */
.avatar{
  min-width:48px;
  min-height:48px;
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:#061018;
  border-radius:6px;
  image-rendering:pixelated;
  box-shadow: 0 4px 0 rgba(0,0,0,0.35);
  border:3px solid rgba(255,255,255,0.02);
  font-weight:700;
}

/* body with head and bubble */
.body{display:flex;flex-direction:column;gap:10px;max-width:78%;margin-bottom: 12px;  /* 每条消息下面的空隙 */}
.head{font-size:10px;color:var(--muted);letter-spacing:0.06em}
.bubble {
  font-family: 'FusionPixel', 'Press Start 2P', monospace;
  padding: 10px 12px;
  background: linear-gradient(180deg,#0b1220,#07101a);
  border: 2px solid rgba(255,255,255,0.03);
  border-radius: 6px;
  font-size: 16px;
  line-height: 1.2;
  color: #e6f1ff;
  box-shadow: 6px 6px 0 rgba(0,0,0,0.35);
  white-space: pre-wrap;
  word-break: break-word;
  image-rendering: pixelated;       /* 保持像素风 */
  -webkit-font-smoothing: none;     /* 禁止平滑 */
  -moz-osx-font-smoothing: grayscale;
}

/* composer */
.composer{
  display:flex;
  gap:10px;
  align-items:center;
  padding:0.5rem;
  background:transparent;
}
.name{
  width:170px;
  padding:8px 10px;
  border-radius:6px;
  border:2px solid rgba(255,255,255,0.03);
  background:rgba(0,0,0,0.25);
  color:#dff;
  letter-spacing:0.04em;
}
.message{
  flex:1;
  padding:8px 10px;
  border-radius:6px;
  border:2px solid rgba(255,255,255,0.03);
  background:rgba(0,0,0,0.28);
  color:#fff;
  outline:none;
}
.send{
  padding:10px 14px;
  border-radius:6px;
  background: linear-gradient(180deg,#30d5f9,#0aa4d6);
  border:none;
  color:#021018;
  font-weight:700;
  cursor:pointer;
  box-shadow: 0 6px 0 rgba(0,0,0,0.25);
}

/* credits */
.credits{
  text-align:center;
  color: #9aa8b2;
  font-size:11px;
  margin-top:4px;
}