:root {
  --bg: #07111f;
  --panel: rgba(9, 22, 36, 0.8);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #eef7ff;
  --muted: #9db4c9;
  --accent: #6ee7ff;
  --accent-2: #ff6f91;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "Aptos", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(110, 231, 255, 0.14), transparent 26%),
    radial-gradient(circle at top right, rgba(255, 111, 145, 0.14), transparent 24%),
    linear-gradient(180deg, #08111d 0%, #040a12 100%);
}

body {
  padding: 24px;
}

.shell {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.hero {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.lede {
  margin-top: 16px;
  max-width: 52rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.status-card,
.controls,
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.status-card {
  padding: 24px;
  display: grid;
  align-content: center;
  gap: 10px;
}

.status-label {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
}

.status-value {
  font-size: 2rem;
  font-weight: 700;
}

.status-note {
  color: var(--muted);
  line-height: 1.5;
}

.controls {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  align-items: end;
}

.control {
  display: grid;
  gap: 8px;
}

.control span {
  color: var(--muted);
  font-size: 0.94rem;
}

.number-field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
}

.number-field strong {
  color: var(--muted);
}

button,
input[type="range"],
input[type="checkbox"],
input[type="number"],
select {
  cursor: pointer;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 14px 18px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  font-size: 1rem;
  font-weight: 600;
  transition: transform 140ms ease, background 140ms ease, opacity 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.14);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.primary {
  background: linear-gradient(135deg, var(--accent), #3fc4ff);
  color: #052130;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-2);
}

input[type="number"] {
  width: 100%;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font: inherit;
}

input[type="checkbox"] {
  width: 22px;
  height: 22px;
  accent-color: var(--accent);
}

select {
  width: 100%;
  border: 0;
  outline: none;
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font: inherit;
}

.panel {
  padding: 18px 18px 22px;
}

.panel-header {
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.panel-header p {
  color: var(--muted);
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.view-panel {
  padding: 18px 18px 22px;
}

.tab-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.tab-button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
}

.tab-button.active {
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.22), rgba(63, 196, 255, 0.22));
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(110, 231, 255, 0.22);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.chart-stack {
  display: grid;
  gap: 18px;
}

.chart-card {
  display: grid;
  gap: 12px;
}

.advanced-panel {
  padding: 18px 18px 22px;
}

.advanced-grid {
  display: grid;
  grid-template-columns: repeat(11, minmax(0, 1fr));
  gap: 16px;
}

.sweep-grid {
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.metrics-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.metric-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: grid;
  gap: 8px;
}

.metric-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.metric-card strong {
  font-size: 1.05rem;
}

.button-stack {
  display: grid;
  align-self: end;
}

.sweep-panel {
  padding: 18px 18px 22px;
}

.sweep-metrics-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.adaptive-metrics-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

@media (max-width: 900px) {
  body {
    padding: 16px;
  }

  .hero,
  .controls,
  .advanced-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}