:root {
  color-scheme: dark light;
  --bg0: #041014;
  --bg1: #071c25;
  --text: #eefbff;
  --muted: #8ab5c0;
  --panel: rgba(5, 20, 28, 0.76);
  --panel-strong: rgba(8, 30, 40, 0.92);
  --line: rgba(89, 216, 255, 0.36);
  --line-soft: rgba(89, 216, 255, 0.14);
  --cyan: #45d7ff;
  --teal: #43edbd;
  --amber: #ffc857;
  --rose: #ff6f91;
  --shadow: rgba(0, 0, 0, 0.32);
  --topbar-h: 76px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

button {
  font: inherit;
}

.screen-shell {
  position: fixed;
  inset: 0;
  overflow: hidden;
  color: var(--text);
  background:
    linear-gradient(110deg, rgba(69, 215, 255, 0.12), transparent 28%, rgba(255, 200, 87, 0.1) 72%, transparent),
    linear-gradient(180deg, var(--bg1), var(--bg0));
}

.screen-shell[data-theme="light"] {
  --bg0: #eaf4f7;
  --bg1: #f8fcff;
  --text: #08202a;
  --muted: #4f6d78;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(18, 132, 173, 0.32);
  --line-soft: rgba(18, 132, 173, 0.12);
  --shadow: rgba(27, 70, 88, 0.18);
  color-scheme: light;
}

.screen-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(0deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(135deg, transparent 0 39%, rgba(255, 200, 87, 0.1) 39.1% 39.25%, transparent 39.35% 100%);
  background-size: 96px 96px, 96px 96px, 100% 100%;
  mask-image: linear-gradient(180deg, black, rgba(0, 0, 0, 0.72));
}

.screen-topbar {
  position: relative;
  z-index: 3;
  height: var(--topbar-h);
  display: grid;
  grid-template-columns: minmax(430px, 1fr) auto minmax(360px, 1fr);
  align-items: center;
  gap: 18px;
  padding: 12px max(28px, env(safe-area-inset-right) + 22px) 10px max(34px, env(safe-area-inset-left) + 28px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent),
    color-mix(in srgb, var(--panel-strong), transparent 10%);
  box-shadow: 0 16px 32px var(--shadow);
  backdrop-filter: blur(12px);
}

.brand-block {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 13px;
  padding-left: 4px;
}

.brand-mark {
  flex: 0 0 auto;
  width: 42px;
  height: 20px;
  border: 2px solid var(--cyan);
  border-left-color: var(--teal);
  border-right-color: var(--rose);
  transform: skewX(-24deg);
  box-shadow: 0 0 22px color-mix(in srgb, var(--cyan), transparent 52%);
}

.brand-block h1 {
  margin: 0;
  overflow: hidden;
  color: var(--text);
  font-size: 22px;
  line-height: 1.1;
  font-weight: 760;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-block p {
  margin: 5px 0 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.segment-control,
.screen-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.screen-actions {
  justify-content: flex-end;
}

.segment-button,
.icon-button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent),
    color-mix(in srgb, var(--panel), transparent 4%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

.segment-button {
  min-width: 126px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 700;
}

.segment-button[aria-selected="true"] {
  border-color: color-mix(in srgb, var(--active-accent, var(--cyan)), white 20%);
  color: #001018;
  background: linear-gradient(180deg, color-mix(in srgb, var(--active-accent, var(--cyan)), white 12%), var(--active-accent, var(--cyan)));
  box-shadow:
    0 0 22px color-mix(in srgb, var(--active-accent, var(--cyan)), transparent 48%),
    inset 0 0 0 1px rgba(255, 255, 255, 0.38);
}

.icon-button {
  padding: 0 13px;
  font-size: 13px;
  font-weight: 650;
}

#clock {
  min-width: 140px;
  color: var(--amber);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.stage-wrap {
  position: absolute;
  left: 0;
  top: var(--topbar-h);
  right: 0;
  bottom: 0;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 14px;
}

.stage-frame {
  position: relative;
  width: min(100%, calc((100vh - var(--topbar-h) - 28px) * 16 / 9));
  height: min(calc(100vh - var(--topbar-h) - 28px), calc((100vw - 28px) * 9 / 16));
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 68px),
    color-mix(in srgb, var(--panel), transparent 5%);
  box-shadow:
    0 24px 54px var(--shadow),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.stage-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(69, 215, 255, 0.08), transparent 22%, transparent 78%, rgba(255, 111, 145, 0.08)),
    repeating-linear-gradient(0deg, transparent 0 31px, var(--line-soft) 32px);
}

.stage-toolbar {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: color-mix(in srgb, var(--panel-strong), transparent 4%);
  backdrop-filter: blur(10px);
  font-size: 12px;
  font-weight: 650;
  pointer-events: none;
}

#loadState {
  color: var(--muted);
  font-weight: 500;
}

#supersetFrame {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
}

.stage-corner {
  position: absolute;
  z-index: 3;
  width: 38px;
  height: 18px;
  pointer-events: none;
  border-color: var(--cyan);
  opacity: 0.88;
}

.stage-corner-tl {
  left: 12px;
  top: 10px;
  border-left: 2px solid;
  border-top: 2px solid;
}

.stage-corner-tr {
  right: 12px;
  top: 10px;
  border-right: 2px solid;
  border-top: 2px solid;
}

.stage-corner-bl {
  left: 12px;
  bottom: 10px;
  border-left: 2px solid;
  border-bottom: 2px solid;
}

.stage-corner-br {
  right: 12px;
  bottom: 10px;
  border-right: 2px solid;
  border-bottom: 2px solid;
}

@media (max-width: 980px) {
  :root {
    --topbar-h: 118px;
  }

  .screen-topbar {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    padding-left: 18px;
    padding-right: 18px;
  }

  .segment-control {
    grid-column: 1 / 2;
    justify-content: flex-start;
  }

  .screen-actions {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    flex-wrap: wrap;
  }

  .brand-block h1 {
    font-size: 19px;
  }
}