/* =========================================================
   摄像头取景诊断页（临时）— 独立样式
   与主站 css/style.css 完全解耦：主站样式改动不会影响本页，
   删除本页时也不需要动 style.css。
   容器规则刻意与主站 .stage 保持一致（aspect-ratio + contain）。
   ========================================================= */

:root {
  --c-bg: #0f1613;
  --c-surface: #182220;
  --c-surface-2: #1e2a27;
  --c-ink: #eaf2ee;
  --c-ink-2: #a9bbb4;
  --c-ink-3: #71857e;
  --c-line: #2a3833;
  --c-primary: #14b189;
  --c-primary-d: #0e8a6a;
  --c-accent: #f0a24b;
  --c-danger: #e8726c;
  --radius: 16px;
  --radius-sm: 12px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  /* 容器比例：三种模式共用，不允许 JS 改动 */
  --diag-ar: 0.75;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: none;
}

.wrap {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  padding: calc(16px + var(--safe-t)) 14px calc(28px + var(--safe-b));
}

/* ---------------- 头部 ---------------- */
.hd { padding: 4px 2px 16px; }
.hd__tag {
  display: inline-block; margin: 0 0 10px;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(240, 162, 75, .14); color: var(--c-accent);
  font-size: 11.5px; font-weight: 700; letter-spacing: .3px;
}
.hd__title { margin: 0 0 8px; font-size: 22px; line-height: 1.3; letter-spacing: -.3px; }
.hd__desc { margin: 0; font-size: 13px; color: var(--c-ink-2); line-height: 1.6; }
.hd__desc strong { color: var(--c-ink); font-weight: 700; }

/* ---------------- 卡片 ---------------- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}
.card__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 10px;
}
.card__title { margin: 0; font-size: 15px; font-weight: 700; }
.card__desc { margin: 0 0 10px; font-size: 12.5px; color: var(--c-ink-2); line-height: 1.6; }
.card__desc strong { color: var(--c-ink); }

.chip {
  flex: none;
  padding: 3px 9px; border-radius: 999px;
  background: var(--c-surface-2); color: var(--c-ink-2);
  font-size: 11.5px; font-weight: 700; white-space: nowrap;
}
.chip--mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 600; }
.chip[data-state="live"] { background: rgba(20, 177, 137, .16); color: var(--c-primary); }
.chip[data-state="error"] { background: rgba(232, 114, 108, .16); color: var(--c-danger); }
.chip[data-state="busy"] { background: rgba(240, 162, 75, .16); color: var(--c-accent); }

.sub { margin: 14px 0 8px; font-size: 12.5px; font-weight: 700; color: var(--c-ink-3); }

/* ---------------- 模式选择 ---------------- */
.seg { display: flex; gap: 8px; }
.seg__item {
  flex: 1; min-height: 62px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  padding: 8px 4px;
  border: 1.5px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
  color: var(--c-ink-2);
  font-family: inherit; font-size: 11.5px; line-height: 1.2;
  cursor: pointer;
  transition: border-color .16s, background .16s, color .16s;
}
.seg__item b { font-size: 17px; font-weight: 800; letter-spacing: .5px; }
.seg__item span { opacity: .82; }
.seg__item.is-active {
  border-color: var(--c-primary);
  background: rgba(20, 177, 137, .16);
  color: #dffaf1;
}
.seg__item.is-active b { color: var(--c-primary); }
.seg__item:disabled { opacity: .5; }

.mode-desc {
  margin: 10px 0 0; font-size: 12.5px; color: var(--c-ink-2); line-height: 1.55;
}
.mode-req {
  margin: 6px 0 0; padding: 8px 10px;
  border-radius: 10px; background: #101917;
  border: 1px solid var(--c-line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px; line-height: 1.5; color: #9fd8c7;
  word-break: break-all; white-space: pre-wrap;
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 16px;
  border: 0; border-radius: 12px;
  font-family: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; user-select: none;
  transition: transform .12s, background .18s, opacity .18s;
}
.btn:active:not(:disabled) { transform: scale(.98); }
.btn:disabled { opacity: .42; cursor: not-allowed; }

.btn--primary { background: var(--c-primary); color: #04231b; }
.btn--primary:active:not(:disabled) { background: var(--c-primary-d); }
.btn--ghost { background: transparent; color: var(--c-primary); border: 1.5px solid var(--c-primary); }
.btn--text { background: var(--c-surface-2); color: var(--c-ink-2); }
.btn--sm { min-height: 40px; font-size: 13.5px; padding: 0 12px; flex: 1; }

.btn-row { display: flex; gap: 8px; margin-top: 12px; }
.btn-row .btn { flex: 1; }
.btn-row--tight { margin-top: 10px; }
.btn-row--wrap { flex-wrap: wrap; }
.btn-row--wrap .btn { flex: 1 1 44%; }

/* ---------------- 状态 ---------------- */
.status {
  margin: 10px 0 0; padding: 9px 11px;
  border-radius: 10px; background: #101917;
  font-size: 12.5px; color: var(--c-ink-2); line-height: 1.5;
}
.status[data-ok="1"] { color: #9ff0d6; }
.status[data-ok="0"] { color: #ffb4ab; }

.hint { margin: 8px 0 0; font-size: 11.5px; color: var(--c-ink-3); line-height: 1.55; }
.hint--center { text-align: center; }
.hint b { color: var(--c-ink-2); }
code {
  padding: 1px 5px; border-radius: 5px;
  background: rgba(255, 255, 255, .07);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .92em;
}

/* ---------------- 预览容器 ----------------
   与主站 .stage 同一套规则：固定宽高比 + object-fit: contain。
   三种模式共用同一个容器，本页不会按视频比例自适应。 */
.stage-block { margin-bottom: 12px; }
.stage {
  position: relative;
  width: 100%;
  aspect-ratio: var(--diag-ar);
  max-width: calc(62dvh * var(--diag-ar));
  margin-inline: auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #060a09;
  border: 1px solid var(--c-line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .45);
}
@supports not (aspect-ratio: 1) {
  .stage { height: 62dvh; }
}

.stage__video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
  object-fit: contain;
  background: #000;
}

.stage__content {
  position: absolute;
  border: 1px dashed rgba(126, 240, 201, .5);
  border-radius: 4px;
  pointer-events: none;
}

.stage__badge {
  position: absolute; left: 8px; top: 8px;
  padding: 4px 9px; border-radius: 999px;
  background: rgba(6, 12, 10, .66);
  backdrop-filter: blur(4px);
  color: #d8f5ec; font-size: 11.5px; font-weight: 700;
  pointer-events: none;
}

.stage__frame { position: absolute; inset: 10% 12%; pointer-events: none; }
.stage__frame span {
  position: absolute; width: 20px; height: 20px;
  border: 2px solid rgba(255, 255, 255, .42);
}
.stage__frame span:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-radius: 6px 0 0 0; }
.stage__frame span:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-radius: 0 6px 0 0; }
.stage__frame span:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-radius: 0 0 0 6px; }
.stage__frame span:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-radius: 0 0 6px 0; }

.stage__empty {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-ink-3); font-size: 13px;
}
.stage[data-live="1"] .stage__empty { display: none; }

.stage-meta {
  margin: 8px 0 0; text-align: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px; color: var(--c-ink-3);
}

/* ---------------- 参数表 ---------------- */
.kv { margin: 0; }
.kv__row {
  display: grid;
  grid-template-columns: 6.6em 1fr;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .06);
  font-size: 12px;
}
.kv__row:last-child { border-bottom: 0; }
.kv dt { color: var(--c-ink-3); }
.kv dd {
  margin: 0; color: var(--c-ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px; line-height: 1.5;
  word-break: break-all;
}
.kv__row[data-flag="warn"] dd { color: var(--c-accent); }
.kv__row[data-flag="key"] dd { color: var(--c-primary); font-weight: 700; }

.raw { margin-top: 12px; }
.raw summary {
  padding: 8px 10px; border-radius: 10px;
  background: var(--c-surface-2); color: var(--c-ink-2);
  font-size: 12px; cursor: pointer; list-style: none;
}
.raw summary::-webkit-details-marker { display: none; }
.raw[open] summary { color: var(--c-primary); }
.code {
  margin: 8px 0 0; padding: 10px;
  border-radius: 10px; background: #0b1210;
  border: 1px solid var(--c-line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px; line-height: 1.55; color: #b6d8cc;
  max-height: 260px; overflow: auto;
  white-space: pre-wrap; word-break: break-all;
}

/* ---------------- 原始帧 ---------------- */
.shots {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  margin-top: 10px;
}
.shots:empty { display: none; }
.shot {
  margin: 0;
  border-radius: 10px; overflow: hidden;
  background: #0b1210; border: 1px solid var(--c-line);
}
.shot__img {
  display: block; width: 100%; height: 96px;
  object-fit: contain; background: #060a09;
}
.shot__cap {
  padding: 5px 7px;
  font-size: 10.5px; color: var(--c-ink-2); line-height: 1.35;
}
.shot__cap b { color: var(--c-primary); }
.shot__cap span { display: block; color: var(--c-ink-3); font-size: 10px; }
.shot__del {
  display: block; width: 100%; padding: 5px;
  border: 0; border-top: 1px solid var(--c-line);
  background: transparent; color: var(--c-ink-3);
  font-family: inherit; font-size: 10.5px; cursor: pointer;
}

/* ---------------- 记录 ---------------- */
.log { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.log__line {
  padding: 6px 9px; border-radius: 8px;
  background: #0b1210; border: 1px solid var(--c-line);
  font-size: 11px; color: var(--c-ink-3); line-height: 1.5;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
}
.log__line[data-type="close"] { color: #8fb7a9; }
.log__line[data-type="error"] { color: var(--c-danger); border-color: rgba(232, 114, 108, .4); }

.log__item {
  border-radius: 8px; background: #0b1210; border: 1px solid var(--c-line);
  overflow: hidden;
}
.log__item summary {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 9px; cursor: pointer; list-style: none;
  font-size: 11px; color: var(--c-ink-2);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.log__item summary::-webkit-details-marker { display: none; }
.log__item b { color: var(--c-primary); }
.log__tag {
  flex: none; padding: 1px 6px; border-radius: 5px;
  background: rgba(20, 177, 137, .18); color: var(--c-primary);
  font-weight: 700;
}
.log__txt { color: var(--c-ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log__item .code { margin: 0; border: 0; border-top: 1px solid var(--c-line); border-radius: 0; }

.export-box {
  width: 100%; margin-top: 10px; padding: 10px;
  border-radius: 10px; border: 1px solid var(--c-line);
  background: #0b1210; color: #b6d8cc;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px; line-height: 1.5;
  resize: vertical;
}
.export-box::placeholder { color: var(--c-ink-3); }

/* ---------------- 设备 ---------------- */
.devices { display: flex; flex-direction: column; gap: 6px; }
.devices:empty::after {
  content: "授权后才会显示摄像头名称与 deviceId";
  font-size: 11.5px; color: var(--c-ink-3);
}
.device {
  padding: 7px 9px; border-radius: 8px;
  background: #0b1210; border: 1px solid var(--c-line);
  font-size: 11px; color: var(--c-ink-2);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
}
.device b { color: var(--c-ink); font-family: inherit; }
.device em { font-style: normal; color: var(--c-ink-3); }

/* ---------------- 页脚 / 提示 ---------------- */
.ft { padding: 6px 2px 0; text-align: center; font-size: 11.5px; color: var(--c-ink-3); }
.ft p { margin: 0 0 6px; }
.ft a { color: var(--c-primary); text-decoration: none; }

.toast {
  position: fixed; left: 50%; top: calc(14px + var(--safe-t));
  transform: translate(-50%, -14px);
  max-width: calc(100% - 40px);
  padding: 10px 16px; border-radius: 12px;
  background: rgba(232, 242, 238, .96); color: #10201b;
  font-size: 13px; text-align: center; font-weight: 600;
  opacity: 0; pointer-events: none; z-index: 60;
  transition: opacity .22s, transform .22s;
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 340px) {
  .kv__row { grid-template-columns: 5.6em 1fr; }
  .hd__title { font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}