/* SCS0009 舵机调试工具 - Web 版样式
 *
 * 配色沿用桌面版（PySide6）的视觉语言：深蓝标题、靛蓝主按钮、青绿强调、
 * 紫色写入、红色危险操作；存储区域底色与桌面版参数表一致。
 * 只使用系统字体，页面不产生任何外部网络请求。
 */

:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1f2933;
  --ink-soft: #52606d;
  --muted: #7b8794;
  --border: #dfe3e8;
  --border-strong: #cbd2d9;

  --title: #1a237e;
  --indigo: #5c6bc0;
  --indigo-dark: #3f51b5;
  --teal: #26a69a;
  --teal-dark: #00897b;
  --purple: #6f42c1;
  --purple-dark: #5a32a3;
  --danger: #ef5350;
  --danger-dark: #e53935;
  --ok: #2e7d32;
  --warn: #b26a00;

  --area-eprom: #ffffff;
  --area-sram: #e8f4fd;
  --area-default: #f0f2f5;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
          "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC",
          "Hiragino Sans GB", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas,
          "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------- 页头 */
.app-header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px 24px 14px;
  max-width: 1400px;
  margin: 0 auto;
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--title);
}

.brand p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.header-side {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.link-state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}

.dot.on   { background: var(--ok); box-shadow: 0 0 0 3px rgba(46, 125, 50, .15); }
.dot.off  { background: var(--danger); box-shadow: 0 0 0 3px rgba(239, 83, 80, .15); }

/* ---------------------------------------------------------------- 布局 */
.stack {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px 16px;
}

.card-grow { display: flex; flex-direction: column; min-height: 300px; }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--title);
}

.card-head .card-title { margin-bottom: 12px; }

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.row + .row { margin-top: 10px; }

.row-write { margin-top: 12px; }

.spacer { flex: 1 1 auto; }

.field-label {
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- 控件 */
.control {
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 6px 9px;
  min-width: 96px;
  transition: border-color .12s, box-shadow .12s;
}

.control:focus-visible,
.btn:focus-visible,
.slider:focus-visible {
  outline: none;
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px rgba(92, 107, 192, .22);
}

.control:disabled { background: #f2f4f7; color: var(--muted); cursor: not-allowed; }

.control-port  { min-width: 150px; }
.control-servo { min-width: 110px; }
.control-number { min-width: 84px; width: 96px; }

.readout {
  display: inline-flex;
  align-items: center;
  min-width: 64px;
  min-height: 32px;
  padding: 5px 10px;
  background: #eef1f5;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  flex: 1 1 220px;
  min-width: 160px;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--teal) 0%, var(--indigo) 100%);
  border: 0;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--indigo);
  box-shadow: 0 1px 3px rgba(16, 24, 40, .25);
  cursor: grab;
}

.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--indigo);
  cursor: grab;
}

/* ---------------------------------------------------------------- 按钮 */
.btn {
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .12s, border-color .12s, color .12s, transform .06s;
}

.btn:hover:not(:disabled) { background: #f6f7f9; border-color: var(--border-strong); }
.btn:active:not(:disabled) { transform: translateY(1px); }

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

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

.btn-accent { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn-accent:hover:not(:disabled) { background: var(--teal-dark); border-color: var(--teal-dark); }

.btn-purple { background: var(--purple); border-color: var(--purple); color: #fff; }
.btn-purple:hover:not(:disabled) { background: var(--purple-dark); border-color: var(--purple-dark); }

.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--danger-dark); border-color: var(--danger-dark); }

.btn-lang {
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-dark) 100%);
  border-color: var(--teal-dark);
  color: #fff;
}

.btn-lang:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--teal-dark) 0%, #00796b 100%);
}

.btn-icon { padding: 7px 10px; }
.btn-small { padding: 4px 12px; font-size: 12.5px; }

.btn-guide {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ---------------------------------------------------------------- 状态文字 */
.conn-status { font-weight: 600; color: var(--muted); }
.conn-status.on  { color: var(--ok); }
.conn-status.off { color: var(--danger); }

.scan-result { font-size: 13px; color: var(--ink-soft); }

.status-line {
  margin: 12px 0 0;
  padding: 9px 12px;
  background: #f7f9fb;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
}

.status-line.alert {
  background: #fdecea;
  border-color: #f7c4c1;
  color: var(--danger-dark);
  font-family: var(--font);
  font-weight: 600;
}

.hint-danger {
  margin: 8px 0 0;
  color: var(--danger);
  font-weight: 600;
  font-size: 12.5px;
}

.live-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
}

.live-toggle input { accent-color: var(--indigo); cursor: pointer; }

.live-toggle:has(input:checked) {
  border-color: var(--teal);
  color: var(--teal-dark);
  background: #e8f7f5;
}

.xdat-label { font-size: 13px; color: var(--ink-soft); }

/* ---------------------------------------------------------------- 舵机列表 */
.servo-list {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 108px;
  overflow-y: auto;
  padding: 10px;
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.empty-hint {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted);
}

.servo-chip {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border-strong);
  color: var(--ink);
  cursor: pointer;
  transition: background-color .12s, border-color .12s, color .12s;
}

.servo-chip:hover { border-color: var(--indigo); color: var(--indigo-dark); }

.servo-chip.selected {
  background: var(--indigo);
  border-color: var(--indigo);
  color: #fff;
}

.servo-chip.fresh { animation: pop .35s ease-out; }

@keyframes pop {
  from { transform: scale(.86); opacity: .3; }
  to   { transform: scale(1); opacity: 1; }
}

/* ---------------------------------------------------------------- 参数表 */
.table-wrap {
  flex: 1 1 auto;
  min-height: 220px;
  max-height: 52vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.param-table {
  width: 100%;
  min-width: 560px;          /* 窄屏时表格横向滚动，避免寄存器名被压成两行 */
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}

.param-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f7f9fb;
  border-bottom: 1px solid var(--border-strong);
  padding: 8px 10px;
  text-align: left;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  white-space: nowrap;
}

.param-table tbody td {
  padding: 6px 10px;
  border-bottom: 1px solid #eef1f5;
}

.param-table tbody tr { cursor: pointer; }
.param-table tbody tr:hover td { background: #eef4ff; }
.param-table tbody tr.selected td { background: #e3ecff; }

.col-addr  { width: 88px; }
.col-value { width: 120px; }
.col-area  { width: 96px; }
.col-rw    { width: 76px; }

.param-table td.cell-addr,
.param-table td.cell-value {
  font-family: var(--mono);
}

.param-table td.cell-addr { color: var(--ink-soft); }
.param-table td.cell-value { font-weight: 600; }

.param-table tr[data-area="EPROM"]   td { background: var(--area-eprom); }
.param-table tr[data-area="SRAM"]    td { background: var(--area-sram); }
.param-table tr[data-area="DEFAULT"] td { background: var(--area-default); }

.param-table tr[data-area]:hover td { background: #eef4ff; }
.param-table tr.selected td { background: #e3ecff !important; }

.value-flash { animation: flash .5s ease-out; }

@keyframes flash {
  from { background: #ffe6a7; }
  to   { background: transparent; }
}

/* ---------------------------------------------------------------- 日志 */
.log {
  height: 128px;
  overflow-y: auto;
  padding: 10px 12px;
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.65;
  color: var(--ink);
}

.log-line { white-space: pre-wrap; word-break: break-word; }
.log-time { color: var(--muted); margin-right: 6px; }
.log-line.warn  { color: var(--warn); }
.log-line.error { color: var(--danger-dark); }

/* ---------------------------------------------------------------- Toast */
.toasts {
  position: fixed;
  right: 22px;
  bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 50;
  max-width: min(420px, calc(100vw - 44px));
}

.toast {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--indigo);
  border-radius: var(--radius-sm);
  box-shadow: 0 6px 20px rgba(16, 24, 40, .14);
  padding: 11px 14px;
  font-size: 13px;
  white-space: pre-wrap;
  animation: slide-in .18s ease-out;
}

.toast.ok   { border-left-color: var(--ok); }
.toast.fail { border-left-color: var(--danger); }
.toast.warn { border-left-color: var(--warn); }

@keyframes slide-in {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ---------------------------------------------------------------- 窄屏 */
@media (max-width: 760px) {
  .app-header { padding: 14px 16px 10px; }
  .brand h1 { font-size: 19px; }
  .stack { padding: 0 16px 28px; }
  .card { padding: 12px; }
  .header-side { width: 100%; margin-left: 0; }
  .slider { flex-basis: 100%; }
  .table-wrap { max-height: 46vh; }
}

/* --------------------------------------------- GitHub Pages 静态版新增 */
.env-banner {
  max-width: 1400px;
  margin: 0 auto 14px;
  padding: 10px 16px;
  background: #fff4e5;
  border: 1px solid #ffe0b2;
  border-radius: var(--radius-sm);
  color: var(--warn);
  font-size: 13px;
  font-weight: 600;
}

.env-banner[hidden] { display: none; }

.hint {
  margin: 8px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

/* 只读寄存器：点不动、不进入写入行 */
.param-table tbody tr.ro { cursor: default; }
.param-table tbody tr.ro td { color: var(--muted); }
.param-table tbody tr.ro .cell-value { font-weight: 500; }
.param-table tbody tr.ro:hover td { background: inherit; }
.param-table tr.ro[data-area="EPROM"]:hover td   { background: var(--area-eprom); }
.param-table tr.ro[data-area="SRAM"]:hover td    { background: var(--area-sram); }
.param-table tr.ro[data-area="DEFAULT"]:hover td { background: var(--area-default); }