:root {
  color-scheme: dark;
  --bg: #061325;
  --panel: #0d243f;
  --panel-soft: #102c4e;
  --line: #2a4d73;
  --ink: #d8e6f8;
  --ink-strong: #f7fbff;
  --accent: #67e8f9;
  --accent-strong: #22d3ee;
  --warn: #fde68a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #113a69 0%, var(--bg) 56%);
  color: var(--ink);
}

.tv-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
}

.setup-panel,
.stage-panel {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(8, 20, 38, 0.92), rgba(8, 20, 38, 0.78));
}

.setup-panel {
  padding: 1rem;
  display: grid;
  align-content: start;
  gap: 0.85rem;
}

.kicker {
  margin: 0;
  color: var(--warn);
  letter-spacing: 0.1em;
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.05;
  color: var(--ink-strong);
}

.subcopy {
  margin: 0;
  line-height: 1.45;
}

.launch-form {
  display: grid;
  gap: 0.55rem;
}

.fixed-url {
  margin: 0;
  min-height: 2.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  color: var(--ink-strong);
  background: var(--panel-soft);
  display: flex;
  align-items: center;
  font-weight: 700;
}

label {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

input,
select,
button {
  min-height: 2.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font: inherit;
}

input,
select {
  color: var(--ink-strong);
  background: var(--panel-soft);
}

#tvCode {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 1.25rem;
  font-weight: 900;
}

.actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

button {
  cursor: pointer;
  border-color: var(--accent-strong);
  color: #02243d;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  font-weight: 900;
}

button.ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(15, 37, 63, 0.9);
}

.steps {
  margin: 0;
  padding-left: 1.1rem;
  line-height: 1.45;
  display: grid;
  gap: 0.25rem;
}

.status {
  margin: 0;
  min-height: 1.4rem;
  color: var(--warn);
  font-weight: 700;
}

.stage-panel {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.stage-header {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.stage-header strong {
  color: var(--ink-strong);
}

#arcadeFrame {
  width: 100%;
  height: 100%;
  border: 0;
  background: #020617;
}

.calibration-coach {
  position: absolute;
  inset: 3.75rem 0 0;
  z-index: 2;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto auto;
  place-items: center;
  gap: clamp(0.7rem, 1.6vw, 1.15rem);
  padding: clamp(1rem, 3vw, 2rem);
  color: var(--ink-strong);
  background: radial-gradient(circle at 50% 42%, rgba(34, 211, 238, 0.16), rgba(2, 6, 23, 0.18) 48%, rgba(2, 6, 23, 0.46));
  pointer-events: none;
}

.calibration-coach[hidden] {
  display: none;
}

.coach-hologram {
  position: relative;
  width: min(18vw, 13rem);
  min-width: 7.5rem;
  aspect-ratio: 0.48;
  border: 3px dashed rgba(103, 232, 249, 0.76);
  border-radius: 999px 999px 30px 30px;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.18), rgba(103, 232, 249, 0.04));
  box-shadow: 0 0 38px rgba(34, 211, 238, 0.32), inset 0 0 34px rgba(103, 232, 249, 0.16);
}

.coach-hologram span {
  position: absolute;
  display: block;
  background: rgba(216, 230, 248, 0.8);
  box-shadow: 0 0 18px rgba(103, 232, 249, 0.65);
}

.coach-head {
  top: 9%;
  left: 50%;
  width: 23%;
  aspect-ratio: 1;
  border-radius: 50%;
  transform: translateX(-50%);
}

.coach-body {
  top: 27%;
  left: 50%;
  width: 7%;
  height: 33%;
  border-radius: 999px;
  transform: translateX(-50%);
}

.coach-arm {
  top: 36%;
  width: 34%;
  height: 5%;
  border-radius: 999px;
}

.coach-arm.left {
  left: 14%;
  transform: rotate(-26deg);
}

.coach-arm.right {
  right: 14%;
  transform: rotate(26deg);
}

.coach-leg {
  top: 58%;
  width: 32%;
  height: 5%;
  border-radius: 999px;
}

.coach-leg.left {
  left: 21%;
  transform: rotate(64deg);
}

.coach-leg.right {
  right: 21%;
  transform: rotate(-64deg);
}

.coach-copy {
  display: grid;
  gap: 0.3rem;
  max-width: 42rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid rgba(103, 232, 249, 0.46);
  border-radius: 14px;
  background: rgba(6, 19, 37, 0.78);
  text-align: center;
  box-shadow: 0 18px 60px rgba(2, 6, 23, 0.35);
}

.coach-kicker {
  margin: 0;
  color: var(--warn);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.coach-copy strong {
  font-size: clamp(1.35rem, 3.5vw, 2.4rem);
  line-height: 1;
}

.coach-copy span {
  color: var(--ink);
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  font-weight: 800;
}

.coach-directions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
}

.coach-directions span {
  min-height: 2.2rem;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(103, 232, 249, 0.38);
  border-radius: 999px;
  color: var(--ink-strong);
  background: rgba(13, 36, 63, 0.82);
  font-size: 0.88rem;
  font-weight: 900;
}

.calibration-coach.ready {
  background: radial-gradient(circle at 50% 42%, rgba(34, 197, 94, 0.24), rgba(2, 6, 23, 0.16) 48%, rgba(2, 6, 23, 0.42));
}

.calibration-coach.ready .coach-hologram {
  border-color: rgba(134, 239, 172, 0.92);
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.26), rgba(134, 239, 172, 0.08));
  box-shadow: 0 0 42px rgba(34, 197, 94, 0.5), inset 0 0 38px rgba(134, 239, 172, 0.18);
}

.calibration-coach.ready .coach-hologram span {
  background: rgba(220, 252, 231, 0.92);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.72);
}

.calibration-coach.ready .coach-copy {
  border-color: rgba(134, 239, 172, 0.56);
}

@media (max-width: 980px) {
  .tv-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 70vh;
  }
}