:root {
  --bg-0: #eff4fb;
  --bg-1: #e7eef8;
  --bg-2: #f8fbff;
  --ink: #1f2b3f;
  --ink-soft: #63728a;
  --line: rgba(44, 68, 104, 0.2);
  --line-strong: rgba(44, 68, 104, 0.34);
  --panel: rgba(255, 255, 255, 0.52);
  --panel-heavy: rgba(255, 255, 255, 0.72);
  --accent: #ff5a3e;
  --accent-soft: rgba(255, 90, 62, 0.2);
  --shadow: 0 24px 48px rgba(47, 72, 112, 0.18);
  --font-display: 'Avenir Next Condensed', 'Roboto Condensed', 'Arial Narrow', sans-serif;
  --font-ui: 'IBM Plex Mono', 'SFMono-Regular', 'Menlo', monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: var(--font-ui);
  background:
    radial-gradient(circle at 12% 6%, rgba(161, 205, 255, 0.38), transparent 34%),
    radial-gradient(circle at 88% 4%, rgba(255, 191, 180, 0.34), transparent 32%),
    linear-gradient(170deg, var(--bg-0) 0%, var(--bg-1) 55%, var(--bg-2) 100%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(78, 105, 144, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 105, 144, 0.08) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.3;
}

.ambient {
  position: fixed;
  pointer-events: none;
  filter: blur(54px);
  z-index: 0;
}

.ambient-a {
  width: 460px;
  height: 460px;
  top: 8%;
  left: 14%;
  border-radius: 46% 54% 66% 34% / 54% 38% 62% 46%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 134, 104, 0.38), rgba(119, 158, 236, 0.06));
}

.ambient-b {
  width: 520px;
  height: 520px;
  right: -120px;
  bottom: -140px;
  border-radius: 58% 42% 40% 60% / 42% 58% 46% 54%;
  background: radial-gradient(circle at 48% 45%, rgba(133, 178, 255, 0.3), rgba(255, 255, 255, 0.02));
}

.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: 14px;
  display: grid;
  gap: 14px;
  grid-template-rows: auto 1fr;
}

.panel {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--panel-heavy), var(--panel));
  backdrop-filter: blur(16px) saturate(1.08);
  -webkit-backdrop-filter: blur(16px) saturate(1.08);
  box-shadow: var(--shadow);
  border-radius: 6px;
}

.global-bar {
  padding: 12px 14px 14px;
  display: grid;
  gap: 12px;
}

.global-title {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.top-tabs {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 8px;
}

.tab,
.deck-tab {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.46);
  color: #2f3e57;
  min-height: 38px;
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 8px;
  cursor: pointer;
  transition: border-color 200ms ease, color 200ms ease, background 200ms ease, transform 200ms ease;
}

.tab:hover,
.deck-tab:hover {
  transform: translateY(-1px);
  border-color: rgba(44, 68, 104, 0.52);
  color: #182238;
}

.tab.active,
.deck-tab.active {
  border-color: var(--accent);
  color: #ffffff;
  background: linear-gradient(120deg, rgba(255, 90, 62, 0.92), rgba(255, 125, 82, 0.74));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 14px;
  min-height: 0;
}

.stage-panel,
.controls-panel {
  min-height: calc(100vh - 132px);
}

.stage-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 13px 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #5a6b86;
}

.panel-head strong {
  color: #25344f;
  font-weight: 700;
}

.stage-wrap {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.68), rgba(247, 250, 255, 0.6)),
    linear-gradient(rgba(84, 106, 140, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 106, 140, 0.06) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
}

.stage-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.05) 26%, rgba(255, 255, 255, 0.18));
  z-index: 2;
}

.stage-object {
  position: absolute;
  width: 620px;
  height: 620px;
  top: 48%;
  left: 45%;
  transform: translate(-50%, -50%);
  border-radius: 48% 52% 44% 56% / 52% 44% 56% 48%;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 141, 118, 0.4), rgba(255, 255, 255, 0.1) 52%),
    radial-gradient(circle at 70% 70%, rgba(120, 166, 242, 0.36), rgba(255, 255, 255, 0.02) 64%);
  filter: blur(24px);
  opacity: 0.36;
  pointer-events: none;
  z-index: 3;
}

#page-frame {
  position: absolute;
  inset: 12px;
  width: calc(100% - 24px);
  height: calc(100% - 24px);
  border: 1px solid rgba(44, 68, 104, 0.2);
  background: rgba(255, 255, 255, 0.76);
  display: block;
  transition: opacity 140ms ease;
  z-index: 1;
}

#page-frame.is-loading {
  opacity: 0;
}

.loading {
  position: absolute;
  inset: 12px;
  display: grid;
  place-items: center;
  background: rgba(250, 253, 255, 0.72);
  color: #4f5f79;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease;
  z-index: 4;
}

.loading.visible {
  opacity: 1;
}

.controls-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.controls-panel .panel-head {
  border-bottom-color: rgba(44, 68, 104, 0.24);
}

.controls-panel .panel-head strong {
  color: #17243c;
}

.controls-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(245, 249, 255, 0.58)),
    linear-gradient(160deg, rgba(255, 90, 62, 0.06), rgba(102, 154, 241, 0.08));
}

.controls-scroll {
  overflow: auto;
  padding-top: 12px;
}

.controls-panel > .control-group:first-of-type {
  margin-top: 12px;
}

.control-group {
  margin: 0 14px 12px;
  border: 1px solid rgba(44, 68, 104, 0.22);
  background: rgba(255, 255, 255, 0.46);
  padding: 12px;
  display: grid;
  gap: 10px;
}

.control-group h3 {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #546681;
}

.control-group p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: #344663;
}

.deck-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.metrics {
  align-content: start;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #4f607d;
}

.metric-row strong {
  color: #1d2c46;
  border: 1px solid rgba(44, 68, 104, 0.24);
  background: rgba(255, 255, 255, 0.62);
  min-width: 116px;
  text-align: right;
  padding: 5px 8px;
  font-weight: 700;
}

@media (max-width: 1320px) {
  .top-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .stage-panel,
  .controls-panel {
    min-height: auto;
  }

  .stage-panel {
    min-height: 66vh;
  }

  .controls-panel {
    padding-bottom: 2px;
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: 10px;
    gap: 10px;
  }

  .top-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #page-frame,
  .loading {
    inset: 8px;
    width: calc(100% - 16px);
    height: calc(100% - 16px);
  }

  .panel-head {
    padding: 11px 12px;
  }

  .control-group {
    margin: 0 10px 10px;
  }

  .metric-row strong {
    min-width: 92px;
  }
}