/* ============================================================
   JSON 收发测试台 —— 样式
   结构：变量 → 基础 → 顶栏 → 卡片 → 表单 → 记录列表 → 代码块 → 响应式
   改配色只需改 :root 里的变量。
   ============================================================ */

:root {
  --bg: #0f1420;
  --bg-soft: #161c2b;
  --card: #1b2233;
  --card-head: #202941;
  --line: #2c3752;
  --line-soft: #232c42;
  --text: #e6ebf5;
  --text-dim: #9aa7c2;
  --text-faint: #6c7a99;
  --brand: #4c8dff;
  --brand-dark: #3a76e0;
  --ok: #2ecc8f;
  --ok-bg: rgba(46, 204, 143, 0.12);
  --err: #ff6b6b;
  --err-bg: rgba(255, 107, 107, 0.12);
  --warn: #ffb547;
  --warn-bg: rgba(255, 181, 71, 0.12);
  --mono: "Cascadia Code", Consolas, "JetBrains Mono", "Courier New", monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ---------------------------------------------------------- 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  background: linear-gradient(135deg, #1a2438 0%, #141a28 100%);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.subtitle {
  margin: 3px 0 0;
  color: var(--text-dim);
  font-size: 12.5px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--text-dim);
  white-space: nowrap;
}

.status-pill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  flex: none;
}
.status-pill.ok    { color: var(--ok);   border-color: rgba(46,204,143,.35); }
.status-pill.ok .dot    { background: var(--ok);   box-shadow: 0 0 8px var(--ok); }
.status-pill.err   { color: var(--err);  border-color: rgba(255,107,107,.35); }
.status-pill.err .dot   { background: var(--err);  box-shadow: 0 0 8px var(--err); }
.status-pill.warn  { color: var(--warn); border-color: rgba(255,181,71,.35); }
.status-pill.warn .dot  { background: var(--warn); box-shadow: 0 0 8px var(--warn); }

/* ---------------------------------------------------------- 布局 */
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.boot-error {
  margin: 16px 24px 0;
  padding: 14px 16px;
  background: var(--err-bg);
  border: 1px solid rgba(255,107,107,.4);
  border-left: 3px solid var(--err);
  border-radius: var(--radius);
  color: #ffd7d7;
}
.boot-error div { margin-top: 6px; color: var(--text-dim); font-size: 13px; }

/* ---------------------------------------------------------- 卡片 */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 13px 18px;
  background: var(--card-head);
  border-bottom: 1px solid var(--line);
}

.card-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.hint { color: var(--text-faint); font-size: 12px; }

.card-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 18px;
  border-top: 1px solid var(--line-soft);
  background: rgba(0,0,0,.12);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 18px;
}

/* ---------------------------------------------------------- 地址栏 */
.url-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px 0;
}

.url {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  background: #101624;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 13px;
  color: #8fd3ff;
  overflow-x: auto;
  white-space: nowrap;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px 16px;
  padding: 14px 18px;
}

.meta-grid > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.meta-grid span { color: var(--text-faint); font-size: 11.5px; }

.meta-grid b {
  font-weight: 500;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-dim);
  word-break: break-all;
}
.meta-grid b.good { color: var(--ok); }
.meta-grid b.bad  { color: var(--err); }

.issue-list { padding: 0 18px 14px; display: flex; flex-direction: column; gap: 8px; }

.issue {
  padding: 10px 12px;
  border-radius: 7px;
  font-size: 12.5px;
  border: 1px solid transparent;
}
.issue.error { background: var(--err-bg);  border-color: rgba(255,107,107,.3);  color: #ffc9c9; }
.issue.warn  { background: var(--warn-bg); border-color: rgba(255,181,71,.3);   color: #ffe0b0; }
.issue .fix { display: block; margin-top: 4px; color: var(--text-dim); font-size: 12px; }

/* ---------------------------------------------------------- 表单 */
.group {
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 14px;
  margin: 0;
  background: rgba(0,0,0,.14);
}

.group legend {
  padding: 0 8px;
  color: var(--text-dim);
  font-size: 12.5px;
  font-weight: 600;
}

.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }

.field > label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-dim);
  font-size: 12.5px;
}

.field-row { display: flex; gap: 16px; align-items: flex-start; }
.field-row .field { flex: 1; min-width: 0; }
.field-row > .field:last-child { flex: 1.6; }

input[type=text], input[type=number], textarea, select {
  width: 100%;
  padding: 8px 11px;
  background: #101624;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  transition: border-color .15s, box-shadow .15s;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(76,141,255,.15);
}

textarea { resize: vertical; line-height: 1.55; }
input[type=number] { font-family: var(--mono); }

.tip { margin: 6px 0 0; color: var(--text-faint); font-size: 11.5px; }
.tip code, label code, td code, .issue code { font-family: var(--mono); color: #8fd3ff; font-size: 11.5px; }

.radio {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  padding: 9px 11px;
  margin-bottom: 8px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.radio:hover { background: rgba(76,141,255,.06); }
.radio input { margin-top: 3px; flex: none; accent-color: var(--brand); }
.radio span b { display: block; font-weight: 500; font-size: 13px; }
.radio span i {
  display: block;
  font-style: normal;
  color: var(--text-faint);
  font-size: 11.5px;
  margin-top: 2px;
}
.radio:has(input:checked) { border-color: var(--brand); background: rgba(76,141,255,.08); }
/* :has() 的兜底：app.js 会给选中项手动加 .checked 类 */
.radio.checked { border-color: var(--brand); background: rgba(76,141,255,.08); }

.check {
  display: flex;
  gap: 7px;
  align-items: center;
  font-size: 12.5px;
  color: var(--text-dim);
  cursor: pointer;
  margin-bottom: 6px;
}
.check input { accent-color: var(--brand); flex: none; }
.check.inline { margin: 0; display: inline-flex; }

.field.disabled { opacity: .42; pointer-events: none; }

/* ---------------------------------------------------------- 按钮 */
.btn {
  padding: 7px 15px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { background: #222b41; border-color: #3b4a6e; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 500; }
.btn-primary:hover:not(:disabled) { background: var(--brand-dark); border-color: var(--brand-dark); }

.btn-danger { color: #ff9d9d; border-color: rgba(255,107,107,.3); }
.btn-danger:hover:not(:disabled) { background: var(--err-bg); border-color: rgba(255,107,107,.5); }

.btn-ghost { background: transparent; border-color: transparent; color: var(--text-dim); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-soft); color: var(--text); border-color: var(--line); }

.btn-sm { padding: 4px 11px; font-size: 12px; }

.save-tip { font-size: 12.5px; color: var(--text-dim); }
.save-tip.ok  { color: var(--ok); }
.save-tip.err { color: var(--err); }

/* ---------------------------------------------------------- 发送区 */
.send-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px 18px 0;
  font-size: 12.5px;
  color: var(--text-dim);
}
.send-target b { font-family: var(--mono); color: #8fd3ff; font-weight: 500; }
.send-target b.none { color: var(--warn); }
.send-mode {
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--text-dim);
}

.editor {
  display: block;
  margin: 12px 18px 0;
  width: calc(100% - 36px);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  background: #0d1320;
  tab-size: 2;
}

/* ---------------------------------------------------------- 结果区 */
.result { margin: 14px 18px 18px; }
.result:last-child { margin-bottom: 18px; }

.result-box {
  border-radius: 8px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.result-box.ok  { border-color: rgba(46,204,143,.4);  background: var(--ok-bg); }
.result-box.err { border-color: rgba(255,107,107,.4);  background: var(--err-bg); }
.result-box.warn { border-color: rgba(255,181,71,.45); background: var(--warn-bg); }

.result-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 14px;
  font-size: 13.5px;
  font-weight: 500;
}
.result-box.ok   .result-head { color: var(--ok); }
.result-box.err  .result-head { color: var(--err); }
.result-box.warn .result-head { color: var(--warn); }

.result-head .badge {
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(255,255,255,.1);
}

.result-head .elapsed { margin-left: auto; font-weight: 400; font-size: 12px; color: var(--text-dim); }

.result-body { padding: 0 14px 13px; }

.kv {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 4px 12px;
  font-size: 12.5px;
  margin-top: 10px;
}
.kv dt { color: var(--text-faint); }
.kv dd {
  margin: 0;
  font-family: var(--mono);
  color: var(--text-dim);
  word-break: break-all;
}

.diag {
  margin: 12px 0 0;
  padding: 10px 12px 10px 14px;
  background: rgba(0,0,0,.22);
  border-radius: 7px;
  border-left: 2px solid var(--warn);
}
.diag .diag-title {
  display: block;
  margin-bottom: 5px;
  color: var(--warn);
  font-size: 12px;
  font-weight: 600;
}
.diag ul { margin: 0; padding-left: 18px; }
.diag li { margin-bottom: 3px; color: var(--text-dim); font-size: 12.5px; }
.diag li:last-child { margin-bottom: 0; }

details.raw { margin-top: 10px; }
details.raw summary {
  cursor: pointer;
  color: var(--text-faint);
  font-size: 12px;
  user-select: none;
}
details.raw summary:hover { color: var(--text-dim); }
details.raw pre {
  margin: 7px 0 0;
  padding: 9px 11px;
  background: rgba(0,0,0,.3);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 220px;
  overflow: auto;
}

/* ---------------------------------------------------------- 工具条 */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.filter { display: flex; gap: 6px; flex-wrap: wrap; }

.chip {
  padding: 4px 12px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
}
.chip:hover { border-color: var(--brand); color: var(--text); }
.chip.active { background: var(--brand); border-color: var(--brand); color: #fff; }

.toolbar-right { display: flex; align-items: center; gap: 9px; }
.counter { color: var(--text-faint); font-size: 12px; font-family: var(--mono); }

/* ---------------------------------------------------------- 记录列表 */
.msg-list { max-height: 620px; overflow-y: auto; }

.empty {
  padding: 44px 20px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
}

.msg {
  border-bottom: 1px solid var(--line-soft);
  transition: background .2s;
}
.msg:last-child { border-bottom: none; }
.msg.fresh { animation: flash 1.2s ease-out; }
@keyframes flash {
  0%   { background: rgba(76,141,255,.22); }
  100% { background: transparent; }
}

.msg-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  cursor: pointer;
  flex-wrap: wrap;
}
.msg-head:hover { background: rgba(255,255,255,.03); }

.tag {
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
  flex: none;
}
.tag.in  { background: rgba(76,141,255,.18);  color: #7fb0ff; }
.tag.out { background: rgba(178,141,255,.18); color: #c3a5ff; }

.state { font-size: 11px; font-weight: 600; flex: none; }
.state.ok   { color: var(--ok); }
.state.err  { color: var(--err); }
.state.warn { color: var(--warn); }

.msg-when { font-family: var(--mono); font-size: 11.5px; color: var(--text-faint); flex: none; }
.msg-peer {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 80px;
}
.msg-preview {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 2;
  min-width: 100px;
}
.msg-preview.err { color: #ff9d9d; }

.msg-caret { color: var(--text-faint); font-size: 10px; flex: none; transition: transform .15s; }
.msg.open .msg-caret { transform: rotate(90deg); }

.msg-body { display: none; padding: 0 18px 14px; }
.msg.open .msg-body { display: block; }

.msg-error {
  margin-bottom: 10px;
  padding: 9px 12px;
  background: var(--err-bg);
  border-left: 2px solid var(--err);
  border-radius: 5px;
  color: #ffc9c9;
  font-size: 12.5px;
}

/* 成功但需注意（如协议不匹配）的提示条，与红色失败条区分 */
.msg-warn {
  margin-bottom: 10px;
  padding: 9px 12px;
  background: var(--warn-bg);
  border-left: 2px solid var(--warn);
  border-radius: 5px;
  color: #ffe0b0;
  font-size: 12.5px;
}

pre.json {
  margin: 0;
  padding: 11px 13px;
  background: #0d1320;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: #d5e0f5;
  overflow-x: auto;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre;
}

/* JSON 语法着色 */
.j-key   { color: #7fb0ff; }
.j-str   { color: #9fe0a8; }
.j-num   { color: #ffcf87; }
.j-bool  { color: #d9a7ff; }
.j-null  { color: #ff9d9d; }

.msg-foot {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 9px;
  font-size: 11.5px;
  color: var(--text-faint);
  font-family: var(--mono);
}

/* ---------------------------------------------------------- 说明 / 代码 */
.tabs { display: flex; gap: 4px; padding: 12px 18px 0; }

.tab {
  padding: 7px 15px;
  background: transparent;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 7px 7px 0 0;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 12.5px;
  cursor: pointer;
}
.tab.active { background: #0d1320; color: var(--text); border-color: var(--line-soft); }

.tabpanel { padding: 0 18px 18px; }

.code {
  margin: 0;
  padding: 14px 16px;
  background: #0d1320;
  border: 1px solid var(--line-soft);
  border-radius: 0 7px 7px 7px;
  overflow-x: auto;
}
.code code {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #cfdcf5;
  white-space: pre;
}

/* ---------------------------------------------------------- 页脚 / 提示条 */
.foot {
  padding: 18px 24px 30px;
  text-align: center;
  color: var(--text-faint);
  font-size: 11.5px;
}
.foot code { font-family: var(--mono); color: var(--text-dim); }

#toastHost {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}

.toast {
  padding: 9px 15px;
  border-radius: 7px;
  background: var(--card-head);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 12.5px;
  box-shadow: 0 6px 20px rgba(0,0,0,.4);
  animation: slideIn .2s ease-out;
  max-width: 380px;
}
.toast.ok  { border-color: rgba(46,204,143,.5);  color: #b6f0d7; }
.toast.err { border-color: rgba(255,107,107,.5); color: #ffc9c9; }
@keyframes slideIn { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }

/* ---------------------------------------------------------- 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #33405e; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #42527a; }

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 10px; padding: 14px 16px; }
  .wrap { padding: 16px 14px 32px; }
  .field-row { flex-direction: column; gap: 0; }
  .msg-preview { display: none; }
  .url-row, .meta-grid, .toolbar, .card-foot, .send-bar, .tabs, .tabpanel { padding-left: 14px; padding-right: 14px; }
  .editor { margin-left: 14px; margin-right: 14px; width: calc(100% - 28px); }
  .msg-head, .msg-body { padding-left: 14px; padding-right: 14px; }
  .result { margin-left: 14px; margin-right: 14px; }
}