/* 与 Android v1.9 的 Material 3 版式对齐：青色单色系 + 卡片分区 */

:root {
  --brand: #0f766e;
  --brand-dark: #0b5a54;
  --brand-bg: #ccfbf1;
  --brand-ink: #04332f;

  --page: #f5f8f7;
  --card: #ffffff;
  --line: #e3ebe8;
  --line-strong: #cbd8d4;
  --text: #16211f;
  --muted: #63756f;

  --ok: #15803d;
  --ok-bg: #dcfce7;
  --err: #b91c1c;
  --err-bg: #fee2e2;
  --warn-bg: #fef3c7;
  --warn-border: #fcd34d;
  --warn-ink: #92400e;

  --radius: 14px;
  --radius-sm: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #2dd4bf;
    --brand-dark: #14b8a6;
    --brand-bg: #0b3b37;
    --brand-ink: #ccfbf1;

    --page: #0b1412;
    --card: #12201d;
    --line: #243b36;
    --line-strong: #33514a;
    --text: #e6f0ed;
    --muted: #93a8a2;

    --ok: #4ade80;
    --ok-bg: #0f3b24;
    --err: #f87171;
    --err-bg: #3b1414;
    --warn-bg: #3a2a08;
    --warn-border: #a16207;
    --warn-ink: #fde68a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--page);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei UI",
               "PingFang SC", "Hiragino Sans GB", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}

.page {
  max-width: 620px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* ------------------------------------------------------------ 页头 */

.head h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.2px;
}

.head .sub {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

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

.card {
  margin-top: 12px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.card:first-of-type { margin-top: 16px; }

.card h2 {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* ------------------------------------------------------------ 行与字段 */

.row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  margin-bottom: 8px;
}

.row:last-child { margin-bottom: 0; }
.row.tight { gap: 4px; }

.field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.field.grow { flex: 1 1 0; }

.field .label {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

input {
  width: 100%;
  min-width: 0;
  padding: 10px 12px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent);
}

input::placeholder { color: var(--muted); opacity: 0.7; }

/* 隐藏 number 输入的上下箭头，避免误触 */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }

/* ------------------------------------------------------------ 按钮 */

.btn {
  padding: 10px 14px;
  color: var(--brand);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

.btn:hover:not(:disabled) { background: color-mix(in srgb, var(--brand) 8%, transparent); }

.btn.primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
}

@media (prefers-color-scheme: dark) {
  .btn.primary { color: #04211e; }
}

.btn.primary:hover:not(:disabled) { background: var(--brand-dark); border-color: var(--brand-dark); }

.btn.danger {
  color: var(--err);
  border-color: var(--err);
  background: transparent;
}

.btn.danger:hover:not(:disabled) { background: var(--err-bg); }

.btn.ghost {
  flex: 1 1 0;
  color: var(--brand);
  border-color: transparent;
  font-weight: 500;
}

.btn.ghost:hover:not(:disabled) { background: var(--brand-bg); }

.btn.tall { padding-block: 11px; }

/* 「获取信息」靠内容撑开，不参与均分，否则会把手机号输入框挤扁 */
#lookup { flex: 0 0 auto; }

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ------------------------------------------------------------ 提示与结果 */

.lookup-result {
  margin: 4px 0 0;
  padding: 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.lookup-result.ok { color: var(--text); }
.lookup-result.err { color: var(--err); }

.hint {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
}

.conn-state {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
}

.conn-state.off { color: var(--muted); }
.conn-state.ok { color: var(--ok); }

.warn {
  margin-top: 14px;
  padding: 10px 12px;
  color: var(--warn-ink);
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.55;
}

/* ------------------------------------------------------------ 日志 */

.log {
  margin: 6px 0 0;
  padding: 10px;
  max-height: 42vh;
  min-height: 180px;
  overflow: auto;
  color: var(--text);
  background: color-mix(in srgb, var(--line) 55%, transparent);
  border-radius: var(--radius-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
  overscroll-behavior: contain;
}

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

.toast {
  position: fixed;
  left: 50%;
  top: calc(68px + env(safe-area-inset-top, 0px));
  bottom: auto;
  z-index: 50;
  max-width: min(90vw, 460px);
  padding: 10px 18px;
  color: #fff;
  background: rgba(22, 33, 31, 0.94);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -12px);
  transition: opacity 0.18s, transform 0.18s;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
}

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

.toast.ok { background: rgba(21, 128, 61, 0.96); }
.toast.err { background: rgba(185, 28, 28, 0.96); }

/* ------------------------------------------------------------ 窄屏 */

@media (max-width: 430px) {
  .page { padding: 16px 12px 32px; }
  .head h1 { font-size: 23px; }
  .card { padding: 12px; }
  .row { flex-wrap: wrap; gap: 6px; }
  .row .btn { flex: 1 1 auto; }
  #lookup { flex: 0 0 auto; padding-inline: 12px; }
  /* 字段用 min-width 控制换行：数值列（region/subregion/devID）在 390 宽仍可三列 */
  .field.grow { flex: 1 1 0; min-width: 88px; }
  .lookup-result { font-size: 11.5px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}