:root {
  color-scheme: light;
  --bg-start: #0b1023;
  --bg-end: #1d2142;
  --bg-accent: rgba(124, 92, 255, 0.16);
  --glass: rgba(19, 24, 49, 0.72);
  --glass-strong: rgba(25, 30, 61, 0.82);
  --glass-border: rgba(142, 155, 197, 0.24);
  --text-main: #f6f8ff;
  --text-muted: #a6b4d4;
  --accent: #8f73ff;
  --accent-strong: #7c5cff;
  --button-bg: rgba(143, 115, 255, 0.18);
  --button-border: rgba(143, 115, 255, 0.45);
  --surface-elevated: rgba(19, 24, 49, 0.6);
  --control-bg: rgba(18, 24, 46, 0.78);
}

* { box-sizing: border-box; }

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 10% 10%, rgba(124, 92, 255, 0.35), transparent 45%),
              radial-gradient(circle at 90% 15%, rgba(37, 208, 240, 0.25), transparent 40%),
              linear-gradient(135deg, var(--bg-start), var(--bg-end));
  color: var(--text-main);
  line-height: 1.5;
  padding: 40px 0 64px;
}

.app-shell {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero {
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.18), rgba(35, 177, 222, 0.08));
  border: 1px solid rgba(124, 92, 255, 0.25);
  border-radius: 26px;
  padding: 36px 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  box-shadow: 0 35px 80px rgba(10, 12, 28, 0.45);
}

.hero-kicker {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.header {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 8px;
}

.hero-subtitle {
  max-width: 520px;
  margin: 0;
}

.hero-meta {
  display: flex;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text-main);
}

.panel {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  padding: 24px 28px;
  box-shadow: 0 25px 60px rgba(9, 11, 24, 0.35);
  display: flex;
  flex-direction: column;
  gap: 18px;
  backdrop-filter: blur(24px);
}

.panel.glass {
  background: var(--glass-strong);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
}

.section-head .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.section-head h3 {
  font-size: 20px;
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.small {
  font-size: 13px;
  color: var(--text-muted);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.controls.stackable .field {
  min-width: 170px;
}

.field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--control-bg);
  border-radius: 14px;
  border: 1px solid rgba(143, 160, 206, 0.22);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

button {
  padding: 10px 18px;
  border-radius: 14px;
  border: 1px solid var(--button-border);
  background: var(--button-bg);
  color: var(--text-main);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  backdrop-filter: blur(12px);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 25px rgba(124, 92, 255, 0.28);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(124, 92, 255, 0.24);
}

button.primary {
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.95), rgba(63, 178, 255, 0.85));
  border: 1px solid rgba(124, 92, 255, 0.9);
  box-shadow: 0 18px 35px rgba(69, 109, 255, 0.45);
}

button.primary:hover {
  background: linear-gradient(135deg, rgba(143, 115, 255, 1), rgba(77, 188, 255, 0.95));
}

.action-bar {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.status {
  color: var(--text-muted);
  font-weight: 500;
}

.path {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(17, 23, 44, 0.9);
  border: 1px solid rgba(124, 92, 255, 0.18);
  color: var(--text-muted);
}

input, select {
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(168, 178, 214, 0.35);
  background: rgba(12, 16, 33, 0.85);
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  min-width: 0;
}

input[type="number"] {
  width: 90px;
}

input[type="range"] {
  width: 220px;
  accent-color: var(--accent-strong);
}

.scroll-panel {
  max-height: 55vh;
  overflow: auto;
  padding: 12px;
  border: 1px solid rgba(134, 146, 191, 0.2);
  border-radius: 18px;
  background: rgba(14, 19, 42, 0.6);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.small-pad {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card {
  border: 1px solid rgba(124, 92, 255, 0.15);
  border-radius: 18px;
  padding: 18px;
  background: rgba(15, 21, 44, 0.6);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.rules-grid {
  display: grid;
  gap: 12px;
}

.rule-row {
  display: grid;
  gap: 12px;
  grid-template-columns: 60px 1fr 1fr 60px 1fr 1fr auto;
  align-items: center;
}

.force-card {
  border: 1px dashed rgba(143, 115, 255, 0.3);
  border-radius: 16px;
  padding: 16px;
  background: rgba(17, 22, 47, 0.75);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.force-head {
  display: grid;
  grid-template-columns: 60px 1fr 1fr auto;
  gap: 12px;
  align-items: center;
}

.force-then-row {
  display: grid;
  grid-template-columns: 60px 1fr 1fr auto;
  gap: 12px;
  align-items: center;
}

.layer-row {
  border: 1px solid rgba(129, 142, 192, 0.28);
  border-radius: 18px;
  padding: 14px 16px;
  margin: 12px 0;
  background: rgba(16, 20, 45, 0.7);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.layer-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.layer-head button.up,
.layer-head button.down,
.layer-head button.toggle {
  padding: 8px 10px;
  min-width: 36px;
  font-size: 14px;
  line-height: 1;
}

.layer-head .muted {
  color: var(--text-muted);
  font-size: 12px;
  margin-left: 12px;
  order: 3;
}

.layer-head .toggle {
  margin-left: 4px;
}

.layer-head .add-trait {
  margin-left: auto;
  order: 2;
}

.layer-head strong {
  font-size: 16px;
  font-weight: 700;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-size: 14px;
}

.table th, .table td {
  padding: 12px;
  border-bottom: 1px solid rgba(132, 147, 194, 0.18);
  vertical-align: middle;
}

.table th {
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.weight-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.weight-num {
  width: 76px;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 4px;
  background: rgba(124, 92, 255, 0.3);
}

input[type="range"]::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
  margin-top: -5px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent-strong);
}

input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 4px;
  background: rgba(124, 92, 255, 0.3);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent-strong);
}

.layer-body { display: none; }
.layer-row.expanded .layer-body { display: block; }

@media (max-width: 880px) {
  .hero {
    padding: 28px;
  }
  .header {
    font-size: 32px;
  }
  .controls.stackable .field {
    min-width: 140px;
  }
  .table th, .table td {
    padding: 10px;
  }
  .rule-row, .force-head, .force-then-row {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 0 20px;
  }
  .panel {
    padding: 20px;
  }
  .action-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .layer-head {
    gap: 8px;
  }
  .layer-head .add-trait {
    margin-left: 0;
    order: initial;
    width: 100%;
    text-align: center;
  }
}