/* ============ 基础 ============ */
* { box-sizing: border-box; }

:root {
  /* 让浏览器原生控件（复选框、文件按钮、数字微调、下拉面板等）也用深色渲染 */
  color-scheme: dark;
  --bg: #0b0e13;
  --panel: #141922;
  --panel-2: #1b2230;
  --line: #2a3444;
  --text: #e6edf5;
  --text-dim: #8b98ab;
  --accent: #22c55e;
  --accent-dim: #16532f;
  --danger: #ef4444;
  --warn: #f59e0b;
  /* 内容区最大宽度：浏览器最大化时整体居中，不向两侧无限拉伸 */
  --content-max: 1680px;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  font-size: 14px;
}

h1, h2 { margin: 0; font-weight: 600; }

/* ============ 滚动条（跟随页面深色配色） ============ */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 6px;
  border: 3px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: #3c4c63; background-clip: content-box; }
*::-webkit-scrollbar-corner { background: transparent; }

/* ============ 底部使用教程 ============ */
.tutorial {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
}
.tutorial-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}
.tutorial-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}
.tutorial-head h2 { font-size: 18px; }

.tutorial-steps {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}
.step {
  display: flex;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
}
.step-num {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.step-body { flex: 1 1 auto; min-width: 0; }
.step-title { font-weight: 600; margin-bottom: 4px; }
.step-body p {
  margin: 0;
  color: var(--text-dim);
  line-height: 1.7;
  font-size: 13.5px;
}
.step-body strong { color: var(--text); font-weight: 600; }
.step-body code {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12.5px;
  color: #9ecbff;
}

.tutorial-tips {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 18px;
}
.tutorial-tips .tip-title {
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--warn);
}
.tutorial-tips ul { margin: 0; padding-left: 18px; }
.tutorial-tips li {
  color: var(--text-dim);
  line-height: 1.8;
  font-size: 13px;
  margin-bottom: 4px;
}
.tutorial-tips strong { color: var(--text); }
.tutorial-tips code {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12px;
  color: #9ecbff;
}

/* ============ 顶栏 ============ */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  /* 左右内边距随视口增大而增大，使内容始终与下方 .layout 的居中宽度对齐 */
  padding: 10px max(16px, calc((100% - var(--content-max)) / 2));
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 16px; letter-spacing: .5px; }
.brand .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 10px var(--danger);
}

.topbar-status { display: flex; gap: 18px; flex: 1; color: var(--text-dim); font-size: 13px; }
.topbar-actions { display: flex; gap: 10px; }

/* ============ 按钮/表单 ============ */
.btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: .15s;
}
.btn:hover:not(:disabled) { border-color: #3c4c63; background: #222b3a; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent-dim); border-color: #1f7a45; color: #d7ffe6; }
.btn.primary:hover:not(:disabled) { background: #1c6b3c; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn.danger { background: #4a1d1d; border-color: #7f2b2b; color: #ffd9d9; }

input[type="text"],
input[type="number"],
input[type="url"],
input[type="search"],
input[type="password"],
input[type="tel"],
textarea,
select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  width: 100%;
}
input[type="text"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  border-color: #3c5a7a;
  box-shadow: 0 0 0 2px rgba(60, 90, 122, .25);
}

/* 占位符文字：与页面次要文字同色系，不刺眼 */
input::placeholder, textarea::placeholder { color: #5c6b80; }

/* 每路机位拉流地址：一行一个「机位名 + 输入框」 */
.cam-urls { display: grid; gap: 6px; }
.cam-urls .cam-row { display: flex; align-items: center; gap: 6px; }
.cam-urls .cam-row span {
  flex: 0 0 auto;
  width: 40px;
  font-size: 12px;
  color: var(--text-dim);
}
.cam-urls input {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 12px;
  font-family: Consolas, "Courier New", monospace;
}

/* 机位来源：一行一个「机位名 + 来源下拉 + 选文件 + 文件名」 */
.source-list { display: grid; gap: 6px; }
.source-row { display: flex; align-items: center; gap: 6px; }
.source-row > span:first-child {
  flex: 0 0 auto;
  width: 40px;
  font-size: 12px;
  color: var(--text-dim);
}
.source-row select {
  flex: 0 0 auto;
  width: auto;
  padding: 4px 6px;
  font-size: 12px;
}
.source-row .source-name {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 拉流状态：每路一张小卡，显示协议 / 是否超低延迟 / 实际编码 */
.probe-list { display: grid; gap: 6px; }
.probe-row {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 8px;
}
.probe-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 12px;
  color: var(--text);
}
.probe-badge {
  flex: 0 0 auto;
  font-size: 11px;
  padding: 0 6px;
  border-radius: 9px;
  border: 1px solid var(--line);
  color: var(--text-dim);
}
.probe-badge.ok { color: #8ff0b0; border-color: #2f6b45; background: #12271b; }
.probe-badge.no { color: #ffd18a; border-color: #6b5a2f; background: #27220f; }
.probe-detail {
  margin-top: 3px;
  font-size: 11px;
  color: var(--text-dim);
  font-family: Consolas, "Courier New", monospace;
  word-break: break-all;
}

input[type="range"] { width: 100%; accent-color: var(--accent); }

/* 文件选择（台标）：按钮跟随页面按钮风格 */
input[type="file"] { width: 100%; font-size: 12px; color: var(--text-dim); }
input[type="file"]::file-selector-button {
  margin-right: 8px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}
input[type="file"]::file-selector-button:hover { border-color: #3c5a7a; }

.switch { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--text-dim); }
.switch input { accent-color: var(--accent); }

/* ============ 布局 ============ */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  height: calc(100vh - 57px);
  overflow: hidden;
  /* 浏览器最大化时整体居中：限制最大宽度并水平居中 */
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  min-width: 0;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.panel-head h2 { font-size: 13px; color: var(--text-dim); letter-spacing: .5px; }

.program-panel { grid-column: 1; grid-row: 1; }
.multiview-panel { grid-column: 1; grid-row: 2; overflow: hidden; display: flex; flex-direction: column; min-height: 0; }
.control-panel { grid-column: 2; grid-row: 1 / span 2; overflow-y: auto; }

/* ============ 成品画布 ============ */
.canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 48vh;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}
#outputCanvas { width: 100%; height: 100%; display: block; object-fit: contain; }
.canvas-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #4a5568;
  font-size: 15px;
  pointer-events: none;
}

.badge {
  font-size: 12px;
  color: var(--text-dim);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 2px 10px;
}
.mini { font-size: 12px; color: var(--text-dim); }

/* ============ 多机位监看 ============ */
.multiview-grid {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 10px;
}
.tile {
  /* 填满整个格子，消除上下左右空白；画布用 cover 保持 16:9 画面铺满 */
  width: 100%;
  height: 100%;
  border: 2px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #000;
  cursor: pointer;
  transition: border-color .15s;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.tile:hover { border-color: #4a5b73; }
.tile.live { border-color: #2f6b45; }
.tile.ref { border-color: #2b6cb0; }
.tile.pgm { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.tile.error { border-color: var(--danger); }
.tile canvas {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: block;
  background: #05070a;
  object-fit: cover;
}
.tile-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 8px;
  font-size: 12px;
  background: var(--panel-2);
  color: var(--text-dim);
}
.tile-name { color: var(--text); white-space: nowrap; flex: 0 0 auto; }
.tile-state { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tile-right { display: flex; align-items: center; gap: 8px; min-width: 0; }

/* 单路机位音量条 */
.tile-meter {
  flex: 1 1 auto;
  min-width: 28px;
  height: 5px;
  background: #161c28;
  border: 1px solid #222b3d;
  border-radius: 3px;
  overflow: hidden;
}
.tile-meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2f8f52 0%, #2f8f52 60%, #d4a017 78%, #c0392b 100%);
  transition: width .06s linear;
}

/* 单路连接 / 断开按钮 */
.tile-btn {
  flex: 0 0 auto;
  background: #23303f;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 4px;
  padding: 2px 9px;
  font-size: 11px;
  cursor: pointer;
  transition: .15s;
}
.tile-btn:hover { border-color: #3c5a7a; background: #2b3a4d; }
.tile-btn.is-disconnect { background: #4a1d1d; border-color: #7f2b2b; color: #ffd9d9; }
.tile-btn.is-disconnect:hover { background: #5c2424; }

/* ============ 控制面板 ============ */
.control-group {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.control-group:last-child { border-bottom: none; }
.group-title {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
/*
 * 标题右侧的说明文字：浮到右边并强制单行。
 * 不限制的话，长文字会溢出标题框、被下面的输入框/下拉盖住。
 */
.group-title .mini {
  float: right;
  max-width: 70%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* 需要看全的说明文字（如「机位来源」）改用跑马灯滚动，由 JS 驱动 scrollLeft */
.group-title .mini.marquee { text-overflow: clip; }

.btn-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.cam-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
.cam-key {
  flex: 0 0 auto;
  min-width: 16px;
  text-align: center;
  font-size: 11px;
  line-height: 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  opacity: .6;
}
.cam-btn.active { background: var(--accent-dim); border-color: #1f7a45; color: #d7ffe6; }

.row { display: flex; align-items: center; gap: 8px; }
.row > * { flex: 1; }
.row .mini { flex: 0 0 auto; }

.audio-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.audio-row { display: flex; align-items: center; gap: 8px; }
.audio-row .mini { flex: 0 0 52px; }
.audio-row input[type="range"] { flex: 1; }
.audio-row .btn { flex: 0 0 auto; }

.status-light {
  flex: 0 0 auto;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #3a4557;
}
.status-light.on { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.status-light.warn { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.status-light.err { background: var(--danger); box-shadow: 0 0 8px var(--danger); }

.log-box {
  height: 130px;
  overflow-y: auto;
  background: #0d1117;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  font-size: 12px;
  line-height: 1.6;
  font-family: Consolas, "Courier New", monospace;
  color: var(--text-dim);
}

/* ============ B站弹幕 ============ */
/* 连接信息过长时由 JS 自动跑马灯滚动（不再截断成省略号） */
.dm-status-text {
  overflow: hidden;
  white-space: nowrap;
}
.row .mini.dm-status-text { flex: 1 1 auto; min-width: 0; }
.danmaku-list {
  margin-top: 8px;
  height: 220px;
  overflow-y: auto;
  background: #0d1117;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  font-size: 12px;
  line-height: 1.65;
}
.dm-item { word-break: break-all; }
.dm-time { color: #4a5568; }
.dm-user { color: #9ecbff; }
.dm-text { color: var(--text); }
.dm-gift .dm-text { color: #ffd18a; }
.dm-superchat .dm-text { color: #ff9a9a; font-weight: 600; }
.log-box .l-error { color: #ff9a9a; }
.log-box .l-ok { color: #8ff0b0; }
.log-box .l-warn { color: #ffd18a; }
.log-box div { word-break: break-all; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: auto; overflow-y: auto; height: auto; }
  .program-panel, .multiview-panel, .control-panel { grid-column: 1; grid-row: auto; }
  .multiview-grid { grid-auto-rows: auto; }
  .tile canvas { aspect-ratio: 16 / 9; }
}