:root {
  --bg: #080914;
  --panel: #101328;
  --ink: #e8eeff;
  --muted: #9ea7d1;
  --accent: #45f7d7;
  --accent-2: #ff4fd8;
  --warn: #ffd36a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% -5%, #302766 0%, transparent 45%),
    radial-gradient(circle at 80% 10%, #38204e 0%, transparent 40%),
    repeating-linear-gradient(to bottom, rgba(255,255,255,0.03) 0 1px, transparent 1px 4px),
    var(--bg);
}

.app {
  width: min(920px, 92vw);
  margin: 1.3rem auto 2rem;
  display: grid;
  gap: 1rem;
}

.panel {
  background: linear-gradient(160deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid rgba(146, 173, 255, 0.28);
  border-radius: 16px;
  padding: 1.1rem 1.2rem;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4), inset 0 0 30px rgba(69, 247, 215, 0.05);
}

.kicker {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
}

h1 {
  margin: 0.3rem 0 0.45rem;
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
}

.intro p {
  margin: 0;
  line-height: 1.45;
  color: #d6deff;
}

.topline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-bottom: 0.75rem;
}

.topline > div {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
}

.label {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hint {
  margin: 0.3rem 0 1rem;
  color: var(--warn);
  font-size: 0.96rem;
}

.sliders {
  display: grid;
  gap: 0.7rem;
}

label {
  display: grid;
  grid-template-columns: 80px 1fr 52px;
  align-items: center;
  gap: 0.7rem;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 0.5rem 0.6rem;
}

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

label strong {
  text-align: right;
  color: var(--accent);
}

.meter-wrap {
  margin-top: 0.85rem;
  height: 78px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(to top, rgba(69,247,215,0.1), rgba(0,0,0,0.25));
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  gap: 0.24rem;
  padding: 0.5rem;
  overflow: hidden;
}

.bar {
  align-self: end;
  min-height: 6px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(to top, var(--accent), #88fff4);
  box-shadow: 0 0 9px rgba(69, 247, 215, 0.55);
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0.9rem;
}

button {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  padding: 0.62rem 0.8rem;
  background: rgba(255,255,255,0.05);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

button:hover { filter: brightness(1.1); }
button:active { transform: translateY(1px); }

button.primary {
  border-color: rgba(255, 79, 216, 0.55);
  background: linear-gradient(150deg, rgba(255,79,216,0.24), rgba(255,79,216,0.08));
}

.result {
  margin-top: 0.85rem;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  line-height: 1.35;
}

.target {
  margin-top: 0.55rem;
  color: #cde5ff;
  min-height: 1.2em;
}

footer a {
  color: #b8ccff;
  text-decoration: none;
}

footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

@media (max-width: 680px) {
  .actions { grid-template-columns: 1fr; }
  label { grid-template-columns: 64px 1fr 44px; }
}