:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-2: #1f2330;
  --border: #2a2f3d;
  --text: #e6e8ee;
  --muted: #8b90a0;
  --accent: #4f8cff;
  --accent-2: #3b6fd6;
  --danger: #e5534b;
  --ok: #3fb950;
}

* {
  box-sizing: border-box;
}

.hidden {
  display: none !important;
}

/* 线性 SVG 图标 */
.icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.icon.logo {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
    "PingFang SC", "Noto Sans CJK SC", Roboto, Helvetica, Arial, sans-serif;
}

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.title {
  font-size: 16px;
}

.room {
  display: flex;
  align-items: center;
  gap: 8px;
}

.room label {
  color: var(--muted);
  font-size: 13px;
}

#roomName {
  width: 160px;
  padding: 6px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

#roomName:focus {
  border-color: var(--accent);
}

.meta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.dot {
  opacity: 0.5;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.status.ok::before {
  background: var(--ok);
}

.status.off::before {
  background: var(--danger);
}

.online-wrap b {
  color: var(--text);
}

/* 编辑区 */
.editor-wrap {
  flex: 1;
  display: flex;
  padding: 14px;
  min-height: 0;
}

#editor {
  flex: 1;
  width: 100%;
  resize: none;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: "Cascadia Code", "JetBrains Mono", Consolas, "Microsoft YaHei",
    monospace;
  font-size: 15px;
  line-height: 1.6;
  outline: none;
  tab-size: 4;
}

#editor:focus {
  border-color: var(--accent);
}

/* 工具栏 */
.toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--panel);
  border-top: 1px solid var(--border);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

button {
  padding: 8px 14px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

button:hover {
  background: #262b3a;
  border-color: var(--accent);
}

button:active {
  transform: translateY(1px);
}

button.ghost {
  background: transparent;
  padding: 6px 10px;
  font-size: 13px;
}

button.danger:hover {
  border-color: var(--danger);
  color: #ff8079;
}

/* 登录遮罩 */
.login-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 10, 15, 0.85);
  backdrop-filter: blur(4px);
  z-index: 50;
}

.login-card {
  width: min(360px, 90vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
}

.login-lock {
  width: 40px;
  height: 40px;
  color: var(--accent);
}

.login-card h2 {
  margin: 0;
  font-size: 18px;
}

.login-tip {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.login-card input {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  outline: none;
}

.login-card input:focus {
  border-color: var(--accent);
}

.login-error {
  min-height: 18px;
  color: #ff8079;
  font-size: 13px;
}

.login-btn {
  width: 100%;
  justify-content: center;
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 10px;
}

.login-btn:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.stats {
  margin-left: auto;
  display: flex;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
}

.stats b {
  color: var(--text);
}

/* 自定义确认弹窗 */
.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 10, 15, 0.7);
  backdrop-filter: blur(3px);
  z-index: 60;
  animation: fade 0.15s ease;
}

.modal-card {
  width: min(380px, 90vw);
  padding: 22px 22px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  animation: pop 0.15s ease;
}

.modal-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.modal-icon {
  width: 22px;
  height: 22px;
  color: var(--danger);
}

.modal-head h3 {
  margin: 0;
  font-size: 16px;
}

.modal-text {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.modal-btn {
  padding: 8px 18px;
  justify-content: center;
}

.modal-btn.primary {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
  font-weight: 600;
}

.modal-btn.primary:hover {
  background: #c5423b;
  border-color: #c5423b;
}

@keyframes fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pop {
  from {
    opacity: 0;
    transform: scale(0.94);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 提示气泡 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 80px;
  transform: translateX(-50%) translateY(20px);
  background: #2b3142;
  color: var(--text);
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 10;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 600px) {
  .meta {
    width: 100%;
    margin-left: 0;
  }

  #roomName {
    width: 120px;
  }
}