/* =============================================================
   LED 前屏模拟器 · 控制台
   Ark UI / endfield family · complex depth
   信号色 #C1D8AC，双主题（night / day）
   ============================================================= */

/* ---------------- Unifont 三套地区字形 ---------------- */
@font-face {
  font-family: "LEDUniSC";
  src: url("../fonts/unifont-17.0.05.otf") format("opentype");
  font-display: swap;
}
@font-face {
  font-family: "LEDUniTC";
  src: url("../fonts/unifont_t-17.0.05.otf") format("opentype");
  font-display: swap;
}
@font-face {
  font-family: "LEDUniJP";
  src: url("../fonts/unifont_jp-17.0.05.otf") format("opentype");
  font-display: swap;
}

/* ---------------- 设计令牌 ---------------- */
:root {
  --sig: #c1d8ac;
  --sig-soft: rgba(193, 216, 172, 0.16);
  --sig-line: rgba(193, 216, 172, 0.42);
  --sig-ink: #16200f;

  --font-ui: "Space Grotesk", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", "Consolas", "Menlo", monospace;

  --rail-w: 340px;
  --dur: 200ms;
}

html[data-theme="night"] {
  --bg: #0f110e;
  --surface: #161a14;
  --surface-2: #1d221b;
  --surface-3: #262c22;
  --text: #eef1e8;
  --muted: #9aa392;
  --dim: #7b8574;
  --line: rgba(238, 241, 232, 0.12);
  --line-2: rgba(238, 241, 232, 0.22);
  --sig-text: #c1d8ac;
  --stage-bg: #0a0c09;
  --field-rule: rgba(238, 241, 232, 0.055);
  --bezel: #14170f;
  --screen-bg: #050604;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
}

html[data-theme="day"] {
  --bg: #eceee5;
  --surface: #f6f7f1;
  --surface-2: #e9ece0;
  --surface-3: #dfe3d5;
  --text: #191d16;
  --muted: #5b6455;
  --dim: #6b7466;
  --line: rgba(25, 29, 22, 0.14);
  --line-2: rgba(25, 29, 22, 0.28);
  --sig-text: #4c6b3a;
  --stage-bg: #e4e7dc;
  --field-rule: rgba(25, 29, 22, 0.06);
  --bezel: #1b1f17;
  --screen-bg: #050604;
  --shadow: 0 24px 60px rgba(40, 48, 33, 0.22);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur) ease, color var(--dur) ease;
}

/* ================= 整体栅格 ================= */
.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--rail-w) var(--rail-w);
  height: 100vh;
  min-height: 0;
}

/* ================= 舞台 ================= */
.stage {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--stage-bg);
  transition: background var(--dur) ease;
}

.stage__top {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  height: 52px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
}

.id-block {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--dim);
}

.id-block__mark {
  width: 6px;
  height: 6px;
  background: var(--sig);
  box-shadow: 0 0 10px var(--sig-line);
}

.id-block__text { color: var(--muted); }

.stage__divider {
  width: 1px;
  height: 14px;
  background: var(--line-2);
}

.stage__title {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text);
}

.stage__spacer { flex: 1 1 auto; }

.clock {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color var(--dur) ease, border-color var(--dur) ease, background var(--dur) ease;
}

.theme-switch:hover {
  color: var(--text);
  border-color: var(--sig-line);
}

.theme-switch[aria-pressed="true"] {
  background: var(--sig);
  border-color: var(--sig);
  color: var(--sig-ink);
}

.theme-switch__mark {
  width: 8px;
  height: 8px;
  border: 1px solid currentColor;
  border-radius: 50%;
  box-shadow: inset 0 0 0 2px var(--bg);
}

.theme-switch[aria-pressed="true"] .theme-switch__mark {
  background: var(--sig-ink);
  border-color: var(--sig-ink);
  box-shadow: none;
}

/* ---------------- 舞台中央场 ---------------- */
.stage__field {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px 40px 34px;
  overflow: hidden;
}

.field-rules {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--field-rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--field-rule) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 100% at 50% 50%, #000 25%, transparent 88%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 50%, #000 25%, transparent 88%);
  pointer-events: none;
}

.field-id {
  position: absolute;
  left: 18px;
  bottom: -18px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 190px;
  line-height: 0.78;
  letter-spacing: -0.07em;
  color: var(--text);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
  font-variant-numeric: tabular-nums;
}

.field-id span {
  font-size: 0.42em;
  letter-spacing: -0.02em;
  margin-left: 0.03em;
}

.field-corner {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 0 solid var(--line-2);
  pointer-events: none;
}
.field-corner--tl { top: 18px; left: 22px; border-top-width: 1px; border-left-width: 1px; }
.field-corner--tr { top: 18px; right: 22px; border-top-width: 1px; border-right-width: 1px; }
.field-corner--bl { bottom: 18px; left: 22px; border-bottom-width: 1px; border-left-width: 1px; }
.field-corner--br { bottom: 18px; right: 22px; border-bottom-width: 1px; border-right-width: 1px; }

.field-scale {
  position: absolute;
  left: 40px;
  right: 40px;
  bottom: 12px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--dim);
  opacity: 0.7;
  pointer-events: none;
}

.field-scale::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -6px;
  height: 5px;
  background-image: repeating-linear-gradient(to right, var(--line-2) 0 1px, transparent 1px 16px);
  opacity: 0.5;
}

/* ---------------- 设备外壳 ---------------- */
.device {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1180px;
  display: flex;
  justify-content: center;
  animation: device-in 720ms cubic-bezier(0.16, 0.84, 0.28, 1) both;
}

@keyframes device-in {
  from { opacity: 0; transform: translateY(10px) scale(0.995); }
  to { opacity: 1; transform: none; }
}

.device__bezel {
  position: relative;
  width: 100%;
  padding: 14px 16px 12px;
  border: 1px solid var(--line-2);
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--bezel) 60%, var(--surface) 100%);
  box-shadow: var(--shadow);
}

.device__bezel::before,
.device__bezel::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}
.device__bezel::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--sig);
  border-left: 1px solid var(--sig);
}
.device__bezel::after {
  right: -1px; bottom: -1px;
  border-right: 1px solid var(--sig);
  border-bottom: 1px solid var(--sig);
}

.device__plate {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--dim);
  text-transform: uppercase;
}

.plate__dot {
  width: 5px;
  height: 5px;
  background: var(--sig);
  box-shadow: 0 0 8px var(--sig-line);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.plate__label { color: var(--muted); }

.plate__sep {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
}

.plate__id {
  padding: 2px 6px;
  border: 1px solid var(--line);
  letter-spacing: 0.16em;
}

.device__window {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border: 1px solid rgba(0, 0, 0, 0.6);
  background: var(--screen-bg);
  box-shadow: inset 0 0 70px rgba(0, 0, 0, 0.95);
  overflow: hidden;
}

.led-frame {
  position: relative;
  line-height: 0;
}

.led-canvas {
  display: block;
  background: var(--screen-bg);
  transition: filter 0.24s ease;
}

.led-glass {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 20%, transparent 80%, rgba(0, 0, 0, 0.4) 100%),
    radial-gradient(120% 140% at 50% 50%, transparent 58%, rgba(0, 0, 0, 0.5) 100%);
  mix-blend-mode: normal;
  opacity: 0.7;
}

.device__foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--dim);
  text-transform: uppercase;
}

.device__foot-sep {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
}

#device-mode { color: var(--sig-text); }

/* ---------------- 舞台底栏 ---------------- */
.stage__foot {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 40px;
  padding: 0 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  overflow: hidden;
}

.stat { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.stat__k { color: var(--dim); }
.stat__v { color: var(--text); font-variant-numeric: tabular-nums; }

.stat--note {
  margin-left: auto;
  color: var(--dim);
  font-family: var(--font-ui);
  letter-spacing: 0.02em;
  text-transform: none;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ================= 侧栏 ================= */
.rail {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--surface);
  border-left: 1px solid var(--line-2);
  transition: background var(--dur) ease;
}

.rail__head {
  position: relative;
  flex: 0 0 auto;
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--line-2);
  background: linear-gradient(180deg, var(--sig-soft), transparent 120%);
}

.rail__head::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--sig), transparent 46%);
  opacity: 0.55;
}

.rail__kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.26em;
  color: var(--sig-text);
}

.rail__title {
  margin: 7px 0 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.1;
}

.rail__sub {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--dim);
}

.rail__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
  scroll-behavior: smooth;
}

.rail__body::-webkit-scrollbar { width: 8px; }
.rail__body::-webkit-scrollbar-track { background: transparent; }
.rail__body::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border: 2px solid var(--surface);
}
.rail__body::-webkit-scrollbar-thumb:hover { background: var(--sig-line); }

.rail__foot {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--dim);
  text-transform: uppercase;
}

.rail__foot-dot {
  width: 5px;
  height: 5px;
  background: var(--sig);
  box-shadow: 0 0 8px var(--sig-line);
}

/* ---------------- 分区 ---------------- */
.zone {
  padding: 14px 20px 8px;
  border-bottom: 1px solid var(--line);
  animation: zone-in 480ms cubic-bezier(0.16, 0.84, 0.28, 1) both;
  animation-delay: calc(var(--i, 1) * 55ms);
}

@keyframes zone-in {
  from { opacity: 0; transform: translateX(10px); }
  to { opacity: 1; transform: none; }
}

.zone--last { border-bottom: 0; padding-bottom: 20px; }

.zone__head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 6px;
}

.zone__no {
  padding: 1px 5px;
  border: 1px solid var(--sig-line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--sig-text);
  line-height: 1.5;
}

.zone__title {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.zone__rule {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
}

.zone__en {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

/* ---------------- 字段 ---------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 0 12px;
}

.field__label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.03em;
}

.field__hint {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

.field__value {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--sig-text);
  font-variant-numeric: tabular-nums;
}

.field__foot {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--dim);
  text-transform: uppercase;
}

.note {
  margin: 8px 0 4px;
  font-size: 11px;
  line-height: 1.65;
  color: var(--muted);
}

.note b { color: var(--text); font-weight: 600; }

.note--rtl { margin-top: 6px; }

/* 状态行 */
.status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--dim);
  text-transform: uppercase;
}

.status-line__dot {
  width: 5px;
  height: 5px;
  background: var(--dim);
  flex: 0 0 auto;
}

.status-line.is-ok .status-line__dot { background: var(--sig); box-shadow: 0 0 8px var(--sig-line); }
.status-line.is-ok #font-status-text { color: var(--muted); }
.status-line.is-fail .status-line__dot { background: #d4674f; }

/* ---------------- 输入 ---------------- */
.input-wrap { position: relative; display: flex; }

.input {
  width: 100%;
  padding: 10px 34px 10px 11px;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.03em;
  outline: none;
  border-radius: 0;
  transition: border-color var(--dur) ease, box-shadow var(--dur) ease, background var(--dur) ease;
}

.input::placeholder { color: var(--dim); }

.input:focus {
  border-color: var(--sig);
  box-shadow: 0 0 0 1px var(--sig-soft), 0 0 26px var(--sig-soft);
}

.input-clear {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  display: none;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 0;
  background: transparent;
  color: var(--dim);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.input-clear:hover { color: var(--sig-text); }
.input-wrap.has-value .input-clear { display: flex; }

.add-row .input { padding: 10px 11px; }

/* ---------------- 分段控件 ---------------- */
.seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
}

.seg__btn {
  appearance: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 6px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur) ease, color var(--dur) ease;
}

.seg__btn:last-child { border-right: 0; }
.seg__btn:hover { color: var(--text); background: var(--sig-soft); }

.seg__btn em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 8px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.seg__btn.is-on {
  background: var(--sig);
  color: var(--sig-ink);
  font-weight: 600;
}

.seg__btn.is-on em { color: rgba(22, 32, 15, 0.6); }

.seg--mode { margin-top: 10px; }
.seg--mode .seg__btn { padding: 11px 6px; font-size: 12px; }

.seg--font { margin-top: 10px; }
.seg--dir, .seg--font, .seg--mode { width: 100%; }

/* ---------------- 滑杆 ---------------- */
.range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 16px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.range::-webkit-slider-runnable-track { height: 2px; background: var(--line-2); }

.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 16px;
  margin-top: -7px;
  border: 0;
  border-radius: 0;
  background: var(--sig);
  box-shadow: 0 0 12px var(--sig-line);
}

.range::-moz-range-track { height: 2px; background: var(--line-2); }

.range::-moz-range-thumb {
  width: 10px;
  height: 16px;
  border: 0;
  border-radius: 0;
  background: var(--sig);
  box-shadow: 0 0 12px var(--sig-line);
}

.range:disabled { opacity: 0.3; cursor: not-allowed; }
.range:disabled::-webkit-slider-thumb { background: var(--dim); box-shadow: none; }
.range:disabled::-moz-range-thumb { background: var(--dim); box-shadow: none; }

.range__scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

/* ---------------- 颜色 ---------------- */
.swatches {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.swatch {
  position: relative;
  appearance: none;
  height: 26px;
  padding: 0;
  border: 1px solid var(--line-2);
  background: var(--surface-3);
  cursor: pointer;
  transition: border-color var(--dur) ease, transform var(--dur) ease;
}

.swatch::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--sw);
}

.swatch:hover { border-color: var(--muted); transform: translateY(-1px); }

.swatch.is-on {
  border-color: var(--sig);
  box-shadow: 0 0 0 1px var(--sig-soft), 0 0 16px var(--sig-soft);
}

.color-row { display: flex; align-items: center; gap: 9px; }

.color-input {
  -webkit-appearance: none;
  appearance: none;
  width: 44px;
  height: 24px;
  padding: 0;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  cursor: pointer;
}

.color-input::-webkit-color-swatch-wrapper { padding: 2px; }
.color-input::-webkit-color-swatch { border: 0; }
.color-input::-moz-color-swatch { border: 0; }

.color-row__hint {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  color: var(--dim);
  text-transform: uppercase;
}

/* ---------------- 按钮 ---------------- */
.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease;
}

.btn:hover {
  border-color: var(--sig);
  color: var(--sig-text);
  background: var(--sig-soft);
}

.btn:active { transform: translateY(1px); }

.btn--accent {
  background: var(--sig);
  border-color: var(--sig);
  color: var(--sig-ink);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.btn--accent:hover {
  background: var(--sig-strong, #d3e6c1);
  color: var(--sig-ink);
}

.btn--wide { width: 100%; }
.btn-row { padding: 4px 0 12px; }

.btn--ghost {
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.btn--ghost:hover {
  border-color: var(--sig-line);
  color: var(--sig-text);
}

.btn-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 0 0 10px;
}

.btn-stack {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.btn.is-on {
  background: var(--sig-soft);
  border-color: var(--sig);
  color: var(--sig-text);
}

.btn.is-on:hover { color: var(--sig-text); border-color: var(--sig); }

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  opacity: 0.6;
}

/* ---------------- 站点列表 ---------------- */
.add-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin: 10px 0 4px;
}

.stations {
  list-style: none;
  margin: 8px 0 12px;
  padding: 0;
  border-top: 1px solid var(--line);
  max-height: 360px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}

.stations::-webkit-scrollbar { width: 8px; }
.stations::-webkit-scrollbar-track { background: transparent; }
.stations::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border: 2px solid var(--surface);
}

.stations__empty {
  padding: 18px 2px;
  font-size: 11px;
  line-height: 1.7;
  color: var(--dim);
  letter-spacing: 0.02em;
}

/* 全选 / 批量操作条 */
.pick-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 2px 0 6px;
  font-size: 10px;
  color: var(--muted);
}

.pick-bar__all {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.pick-bar__all input {
  width: 13px;
  height: 13px;
  margin: 0;
  accent-color: var(--sig);
  cursor: pointer;
}

.pick-bar__count {
  margin-right: auto;
  font-family: var(--font-mono);
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

.pick-bar .btn {
  padding: 5px 9px;
  font-size: 10px;
}

.station {
  position: relative;
  display: grid;
  grid-template-columns: 16px 20px minmax(0, 1fr) 20px;
  grid-template-areas:
    "pick no name del"
    "pick no ops  ops";
  align-items: center;
  gap: 3px 8px;
  padding: 7px 4px;
  border-bottom: 1px solid var(--line);
  cursor: grab;
}

.station__pick { grid-area: pick; display: flex; align-items: center; justify-content: center; }
.station__pick input {
  width: 13px;
  height: 13px;
  margin: 0;
  accent-color: var(--sig);
  cursor: pointer;
}

.station__no { grid-area: no; }
.station__name { grid-area: name; }
.station__del { grid-area: del; }

/* 第二行：模式 / 方向 / 编组 / 复制 / 拖动把手 */
.station__ops {
  grid-area: ops;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
}

.station:active { cursor: grabbing; }
.station.is-dragging { opacity: 0.4; }
.station.is-drop-target { box-shadow: inset 0 2px 0 var(--sig); }

/* 拖动把手：两条横线，hover 才明确显示 */
.station__drag {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  height: 16px;
  opacity: 0.3;
  transition: opacity var(--dur) ease;
}

.station__drag::before,
.station__drag::after {
  content: "";
  display: block;
  height: 1px;
  background: currentColor;
}

.station:hover .station__drag { opacity: 0.85; }

.station__dir {
  min-width: 20px;
  padding: 3px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
}

.station:hover { background: var(--sig-soft); }
.station.is-playing { background: var(--sig-soft); }

.station.is-playing::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--sig);
}

.station__no {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

.station.is-playing .station__no { color: var(--sig-text); }

.station__name {
  appearance: none;
  overflow: hidden;
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 12px;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.station__name:hover { color: var(--sig-text); }

/* 双击改名时的原地输入框 */
.station__edit {
  width: 100%;
  min-width: 0;
  padding: 1px 4px;
  border: 1px solid var(--sig);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: normal;
}

.station__modes { display: flex; gap: 4px; }

.mini {
  appearance: none;
  padding: 3px 6px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--dim);
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--dur) ease;
}

.mini:hover { color: var(--text); border-color: var(--muted); }

.mini.is-on {
  background: var(--sig);
  border-color: var(--sig);
  color: var(--sig-ink);
  font-weight: 600;
}

.station__del {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--dim);
  font-size: 14px;
  line-height: 1;
  opacity: 0;
  cursor: pointer;
  transition: all var(--dur) ease;
}

.station:hover .station__del { opacity: 1; }
.station__del:hover { color: #d4674f; border-color: rgba(212, 103, 79, 0.4); }

.station__del:focus-visible { opacity: 1; }

/* ---------------- 全屏 ---------------- */
body.fs-mode .rail { display: none; }

body.fs-mode .app { grid-template-columns: 1fr; }

body.fs-mode .stage {
  position: fixed;
  inset: 0;
  z-index: 60;
}

body.fs-mode .stage__top,
body.fs-mode .stage__foot,
body.fs-mode .field-scale { display: none; }

body.fs-mode .stage__field { padding: 40px 60px; }

body.fs-mode .device { max-width: 1600px; }

body.fs-mode .field-id { font-size: 280px; opacity: 0.05; }

.exit-fs {
  display: none;
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 70;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line-2);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--dur) ease;
}

.exit-fs:hover {
  border-color: var(--sig);
  color: var(--sig-text);
}

.exit-fs__arrow { color: var(--sig-text); }

body.fs-mode .exit-fs { display: inline-flex; }

/* ---------------- 提示 ---------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 80;
  padding: 9px 16px;
  border: 1px solid var(--line-2);
  border-left: 2px solid var(--sig);
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  letter-spacing: 0.02em;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity var(--dur) ease, transform var(--dur) ease;
}

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

/* ---------------- 焦点 ---------------- */
:focus-visible {
  outline: 1px solid var(--sig);
  outline-offset: 2px;
}

/* ---------------- 自适应 ---------------- */
@media (max-width: 1560px) {
  :root { --rail-w: 320px; }
  .field-id { font-size: 150px; }
}

@media (max-width: 1300px) {
  :root { --rail-w: 300px; }
  .stage__field { padding: 24px 26px 30px; }
  .zone { padding: 12px 16px 6px; }
  .rail__head { padding: 14px 16px 12px; }
  .field-id { font-size: 120px; }
}

@media (max-height: 720px) {
  .rail__head { padding: 10px 16px 9px; }
  .rail__title { font-size: 15px; }
  .zone { padding: 10px 16px 4px; }
  .field { padding: 8px 0 9px; }
  .stations { max-height: 180px; }
}

@media (max-width: 1080px) {
  body { overflow: auto; }

  .app {
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  .stage { height: 64vh; min-height: 420px; }

  .rail {
    border-left: 0;
    border-top: 1px solid var(--line-2);
  }

  .rail__body { overflow: visible; }

  .field-id { font-size: 110px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .rail__body { scroll-behavior: auto; }
}

/* ================= 移动端 / 触屏适配 ================= */

/* 桌面端用 dvh 抵掉浏览器 UI 导致的高度误差。
   ⚠ 必须限定 min-width：这条排在 ≤1080 的媒体查询之后，不限定宽度的话
   会把手机纵向布局的 height:auto 覆盖成整屏高 —— 两栏被压扁、内容互相叠。 */
@supports (height: 100dvh) {
  @media (min-width: 1081px) {
    .app { height: 100dvh; }
  }
}

/* 纵向堆叠布局下必须是自然高度，否则 .rail__body 的 overflow:visible 会让两栏内容重叠 */
@media (max-width: 1080px) {
  .app {
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100dvh;
  }

  .rail { min-height: 0; }
  .rail__body { overflow: visible; }
}

/* 触屏没有 hover：靠 hover 才显形的按钮必须常显，点击区域也要加大 */
@media (hover: none), (pointer: coarse) {
  .station__del { opacity: 1; }
  .station__drag { opacity: 0.7; }
  .station { padding-top: 11px; padding-bottom: 11px; }
  .mini { padding: 7px 9px; font-size: 11px; }
  .seg__btn { padding: 10px 8px; }
  .btn { min-height: 42px; }
  .theme-switch { min-height: 34px; }
  .input { min-height: 40px; }
  .range { height: 28px; }
  .toast { bottom: calc(26px + env(safe-area-inset-bottom)); }
}

@media (max-width: 680px) {
  .stage { height: 48vh; min-height: 300px; }
  .stage__top { height: 46px; padding: 0 14px; gap: 10px; }
  .id-block { display: none; }
  .stage__title {
    font-size: 12px;
    letter-spacing: 0.06em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .theme-switch { white-space: nowrap; }
  .clock { display: none; }
  .stage__field { padding: 14px 14px 18px; }
  .device__bezel { padding: 10px 10px 8px; }
  .device__window { padding: 10px; }
  .field-id { font-size: 84px; }
  .field-scale { display: none; }
  .stage__foot { height: 34px; padding: 0 14px; gap: 12px; font-size: 8px; }
  .stat--note { display: none; }

  .rail__head { padding: 12px 14px 10px; }
  .rail__title { font-size: 15px; }
  .zone { padding: 12px 14px 6px; }
  .rail__body { padding-bottom: 20px; }
  .stations { max-height: none; }
  .btn-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .toast { left: 14px; right: 14px; transform: translate(0, 12px); }
  .toast.is-on { transform: translate(0, 0); }
  .exit-fs {
    top: calc(12px + env(safe-area-inset-top));
    left: calc(12px + env(safe-area-inset-left));
  }

  /* iOS 上输入框字号小于 16px 会在聚焦时把页面放大 */
  .input,
  .station__edit { font-size: 16px; }

  /* 站点行本来就是两行结构，小屏只需要放大点击区域 */
  .station { padding: 10px 4px; gap: 6px 8px; }
  .station__name { font-size: 13px; }
  .station__pick input { width: 16px; height: 16px; }
  .station__ops .mini { padding: 6px 8px; }
  .pick-bar { gap: 6px; }
}