:root {
  color-scheme: dark;
  --bg: #06070c;
  --panel: rgba(15, 18, 31, 0.92);
  --panel-edge: rgba(145, 158, 255, 0.18);
  --text: #f4f7ff;
  --muted: #a5afcc;
  --accent: #7c9cff;
  --accent-strong: #a8bcff;
  --chip: rgba(124, 156, 255, 0.16);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(124, 156, 255, 0.22), transparent 34%),
    linear-gradient(180deg, #0b1020 0%, var(--bg) 68%);
}

button,
input {
  font: inherit;
}

.app-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 36px 0 40px;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
}

.intro {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.mapping-hint {
  margin: 12px 0 0;
  color: #c5cff0;
  font-size: 0.92rem;
}

.mapping-hint code {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.controls-panel {
  padding: 20px;
  margin-bottom: 20px;
}

.controls {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 10px;
}

.field span {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.field input {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  color: var(--text);
  background: rgba(6, 10, 20, 0.9);
  outline: none;
}

.field input:focus {
  border-color: rgba(124, 156, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(124, 156, 255, 0.18);
}

.button-row,
.quick-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.primary,
.secondary,
.chip {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, opacity 140ms ease;
}

.primary,
.secondary {
  padding: 12px 18px;
  font-weight: 700;
}

.primary {
  color: #081021;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
}

.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.chip {
  padding: 10px 14px;
  color: var(--accent-strong);
  background: var(--chip);
}

.primary:hover,
.secondary:hover,
.chip:hover {
  transform: translateY(-1px);
}

.status {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.player-panel {
  padding: 18px;
}

.player-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 20px;
  background: #020409;
}

.player-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.player-meta {
  padding-top: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100vw - 18px, 1120px);
    padding-top: 18px;
  }

  .controls-panel,
  .player-panel {
    border-radius: 18px;
  }

  .button-row {
    flex-direction: column;
  }

  .primary,
  .secondary {
    width: 100%;
  }
}