/* ============================================================
   控车 · 基础样式
   设计原则：移动优先、卡片化、亮暗色靠 CSS 变量切换（不加载任何 UI 框架）
   ============================================================ */

:root {
  --bg0: #eef1f6;
  --bg1: #ffffff;
  --card: #ffffff;
  --card2: #f4f6fa;
  --chip: #f1f4f8;
  --border: #e3e8f0;
  --txt: #16202e;
  --muted: #63718a;
  --faint: #94a3b8;

  --blue: #2f6bff;
  --blue-soft: rgba(47, 107, 255, .1);
  --green: #17a34a;
  --green-soft: rgba(23, 163, 74, .1);
  --amber: #d97706;
  --amber-soft: rgba(217, 119, 6, .1);
  --red: #dc2626;
  --red-soft: rgba(220, 38, 38, .1);
  --purple: #7c3aed;

  --shadow-s: 0 1px 3px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);
  --shadow-m: 0 4px 16px rgba(16, 24, 40, .08);
  --shadow-l: 0 12px 32px rgba(16, 24, 40, .14);
  --r-s: 10px;
  --r-m: 16px;
  --r-l: 22px;

  --safe-b: env(safe-area-inset-bottom, 0px);
  --tabbar-h: 62px;
}

html.dark {
  --bg0: #0d1015;
  --bg1: #161a21;
  --card: #171c24;
  --card2: #1e242e;
  --chip: #1e242e;
  --border: #262e3a;
  --txt: #e8ecf3;
  --muted: #93a0b4;
  --faint: #64748b;

  --blue: #5b8dff;
  --blue-soft: rgba(91, 141, 255, .14);
  --green: #34d399;
  --green-soft: rgba(52, 211, 153, .12);
  --amber: #fbbf24;
  --amber-soft: rgba(251, 191, 36, .12);
  --red: #f87171;
  --red-soft: rgba(248, 113, 113, .12);
  --purple: #a78bfa;

  --shadow-s: 0 1px 3px rgba(0, 0, 0, .4);
  --shadow-m: 0 4px 16px rgba(0, 0, 0, .45);
  --shadow-l: 0 12px 32px rgba(0, 0, 0, .6);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg0);
  color: var(--txt);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

button, input, select { font: inherit; color: inherit; }
button { border: 0; background: none; cursor: pointer; }
input { outline: none; }

.app {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding-bottom: calc(var(--tabbar-h) + var(--safe-b) + 12px);
}

/* ---------------- 顶栏 ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px 10px;
  background: color-mix(in srgb, var(--bg0) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.topbar h1 {
  font-size: 17px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar .sub {
  font-size: 12px;
  color: var(--muted);
  margin-top: 1px;
}

.topbar .spacer { flex: 1; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-s);
  color: var(--muted);
  transition: transform .12s, background .16s;
}
.icon-btn:active { transform: scale(.92); }
.icon-btn.spinning svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- 卡片 ---------------- */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  box-shadow: var(--shadow-s);
}

.section { padding: 0 16px; margin-top: 14px; }

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin: 0 0 8px 4px;
}

/* ---------------- 3D 车模 ---------------- */

.stage {
  position: relative;
  height: 268px;
  margin: 0 16px;
  border-radius: var(--r-l);
  overflow: hidden;
  background: radial-gradient(120% 90% at 50% 8%, var(--card2) 0%, var(--card) 62%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-s);
  touch-action: none;
}

#stage3d { position: absolute; inset: 0; }

.stage-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
}
.stage-fallback img { width: 100%; max-width: 340px; object-fit: contain; }

.stage-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--faint);
  gap: 8px;
}

/* 右下角模型说明：3D 只有逸动 PLUS 一个模型，其他车型显示的是示意车，必须讲清楚 */
.stage-note {
  position: absolute;
  right: 10px;
  bottom: 8px;
  font-size: 10px;
  color: var(--faint);
  background: color-mix(in srgb, var(--card) 72%, transparent);
  backdrop-filter: blur(6px);
  padding: 2px 8px;
  border-radius: 999px;
  pointer-events: none;
  border: 1px solid var(--border);
}
.stage-note:empty { display: none; }
.spinner {
  width: 22px; height: 22px;
  border: 2px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 8px;
}

/* 车顶悬浮状态徽章 */
.stage-badges {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  pointer-events: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--muted);
}
.badge.ok { color: var(--green); border-color: color-mix(in srgb, var(--green) 34%, transparent); }
.badge.warn { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 34%, transparent); }
.badge.danger { color: var(--red); border-color: color-mix(in srgb, var(--red) 34%, transparent); }

.dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ---------------- 指标条 ---------------- */

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 12px 16px 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  overflow: hidden;
  box-shadow: var(--shadow-s);
}

.metric {
  padding: 12px 6px 11px;
  text-align: center;
  position: relative;
}
.metric + .metric::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--border);
}
.metric .v {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.metric .v small { font-size: 11px; font-weight: 600; color: var(--faint); margin-left: 1px; }
.metric .k { font-size: 11px; color: var(--faint); margin-top: 3px; }

/* ---------------- 门窗状态 ---------------- */

.states {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.state-cell {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-s);
  padding: 10px 6px;
  text-align: center;
  transition: background .18s, border-color .18s;
}
.state-cell.open { background: var(--amber-soft); border-color: color-mix(in srgb, var(--amber) 32%, transparent); }
.state-cell.unknown { opacity: .55; }
.state-cell .lbl { font-size: 10px; color: var(--faint); margin-top: 1px; }
.state-cell .st { font-size: 12.5px; font-weight: 600; margin-top: 3px; line-height: 1.2; }
.state-cell svg { color: var(--muted); }
.state-cell.open svg { color: var(--amber); }

/* ---------------- 控制按钮网格 ---------------- */

.grid-cmd {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px 6px;
}

.cmd {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 10px 2px 8px;
  border-radius: 14px;
  transition: transform .12s, background .16s;
}
.cmd:active { transform: scale(.94); }
.cmd:disabled { opacity: .4; }

.cmd .circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-s);
  color: var(--txt);
  transition: background .16s, color .16s, border-color .16s;
}
.cmd.primary .circle { background: var(--blue); border-color: transparent; color: #fff; box-shadow: 0 4px 14px var(--blue-soft); }
.cmd.danger .circle { color: var(--red); }
.cmd.on .circle { background: var(--green-soft); border-color: color-mix(in srgb, var(--green) 40%, transparent); color: var(--green); }
.cmd .lbl { font-size: 11px; color: var(--muted); font-weight: 500; }
.cmd.busy .circle { color: var(--blue); }

/* ---------------- 底部 tabbar ---------------- */

.tabbar {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 100%;
  max-width: 520px;
  height: calc(var(--tabbar-h) + var(--safe-b));
  padding-bottom: var(--safe-b);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: color-mix(in srgb, var(--bg1) 92%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--border);
  z-index: 40;
}

.tabbar button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 10px;
  color: var(--faint);
  transition: color .16s;
}
.tabbar button.on { color: var(--blue); }
.tabbar button:active { transform: scale(.94); }

/* ---------------- 全屏浮层 ---------------- */

.page {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--bg0);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform .26s cubic-bezier(.32, .72, 0, 1), opacity .2s;
  padding-bottom: 28px;
}
.page.show { transform: translateY(0); opacity: 1; pointer-events: auto; }

.page-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px 10px;
  background: color-mix(in srgb, var(--bg0) 90%, transparent);
  backdrop-filter: blur(14px);
}
.page-head h2 { font-size: 17px; font-weight: 700; margin: 0; }

/* ---------------- 列表行 ---------------- */

.rows { background: var(--card); border: 1px solid var(--border); border-radius: var(--r-m); overflow: hidden; }

.row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.row:last-child { border-bottom: 0; }
.row .k { color: var(--muted); }
.row .v { margin-left: auto; font-weight: 600; font-variant-numeric: tabular-nums; }
.row .v.warn { color: var(--amber); }
.row .v.danger { color: var(--red); }
.row .v.ok { color: var(--green); }

/* ---------------- 底部弹层 / 对话框 ---------------- */

.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 20, .42);
  backdrop-filter: blur(2px);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.sheet-backdrop.show { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 100%);
  width: 100%;
  max-width: 520px;
  z-index: 61;
  background: var(--bg1);
  border-radius: var(--r-l) var(--r-l) 0 0;
  padding: 8px 18px calc(20px + var(--safe-b));
  box-shadow: var(--shadow-l);
  transition: transform .28s cubic-bezier(.32, .72, 0, 1);
  max-height: 86vh;
  overflow-y: auto;
}
.sheet.show { transform: translate(-50%, 0); }

.sheet-handle {
  width: 36px; height: 4px;
  border-radius: 2px;
  background: var(--border);
  margin: 4px auto 12px;
}

.sheet h3 { margin: 0 0 4px; font-size: 16px; font-weight: 700; }
.sheet p.desc { margin: 0 0 16px; font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ---------------- 表单 ---------------- */

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 500; }

.input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-s);
  padding: 0 12px;
  transition: border-color .16s, box-shadow .16s;
}
.input-wrap:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-soft);
}
.input-wrap input {
  flex: 1;
  border: 0;
  background: none;
  padding: 13px 0;
  font-size: 16px; /* 16px 防止 iOS 聚焦自动缩放 */
  min-width: 0;
}
.input-wrap input::placeholder { color: var(--faint); font-size: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--r-s);
  font-size: 15px;
  font-weight: 600;
  background: var(--chip);
  color: var(--txt);
  transition: transform .12s, opacity .16s;
}
.btn:active { transform: scale(.985); }
.btn:disabled { opacity: .55; }
.btn.primary { background: var(--blue); color: #fff; box-shadow: 0 4px 16px var(--blue-soft); }
.btn.ghost { background: transparent; border: 1px solid var(--border); }
.btn.small { width: auto; padding: 8px 14px; font-size: 13px; border-radius: 999px; }
.btn.danger { background: var(--red-soft); color: var(--red); }
/* 高危确认的主按钮：需要足够强的视觉权重，浅底红字太弱 */
.btn.solid-danger { background: var(--red); color: #fff; box-shadow: 0 4px 16px var(--red-soft); }

.link-btn {
  font-size: 13px;
  color: var(--blue);
  font-weight: 600;
  padding: 8px 4px;
  white-space: nowrap;
}
.link-btn:disabled { color: var(--faint); }

/* ---------------- Toast ---------------- */

.toast-host {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tabbar-h) + var(--safe-b) + 20px);
  transform: translateX(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
  width: max-content;
  max-width: 88vw;
}

.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  background: color-mix(in srgb, var(--txt) 92%, transparent);
  color: var(--bg0);
  box-shadow: var(--shadow-m);
  animation: toastIn .24s cubic-bezier(.32, .72, 0, 1);
  max-width: 88vw;
}
.toast.ok { background: var(--green); color: #fff; }
.toast.err { background: var(--red); color: #fff; }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------------- 链路调试面板 ---------------- */

.debug-host {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.5;
}

.dbg-item {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--card2);
  margin-bottom: 6px;
  border-left: 3px solid var(--border);
  word-break: break-all;
}
.dbg-item.ok { border-left-color: var(--green); }
.dbg-item.fail { border-left-color: var(--red); }
.dbg-item.pending { border-left-color: var(--amber); }
.dbg-line { display: flex; gap: 6px; align-items: baseline; }
.dbg-step { font-weight: 700; color: var(--txt); white-space: nowrap; }
.dbg-url { color: var(--muted); font-size: 10px; word-break: break-all; }
.dbg-body { color: var(--faint); font-size: 10px; margin-top: 3px; white-space: pre-wrap; }
.dbg-ms { margin-left: auto; color: var(--faint); white-space: nowrap; }

/* ---------------- 空态 / 骨架 ---------------- */

.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--faint);
  font-size: 13px;
}

.skeleton {
  background: linear-gradient(90deg, var(--card2) 25%, var(--chip) 50%, var(--card2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
  color: transparent;
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

.hidden { display: none !important; }

/* 免责声明 / 提示条 */
.notice {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--r-s);
  font-size: 12px;
  line-height: 1.55;
  background: var(--amber-soft);
  color: var(--amber);
  border: 1px solid color-mix(in srgb, var(--amber) 26%, transparent);
}
.notice.info { background: var(--blue-soft); color: var(--blue); border-color: color-mix(in srgb, var(--blue) 26%, transparent); }