:root {
  color-scheme: dark;
  --bg-top: #02040a;
  --bg-mid: #040814;
  --bg-bottom: #08101e;
  --panel: rgba(8, 11, 22, 0.88);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --muted: rgba(224, 232, 255, 0.72);
  --accent: #ffd76a;
  --accent-strong: #85f6ff;
  --shadow: rgba(5, 8, 17, 0.5);
  --surface: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 12%, rgba(89, 126, 255, 0.14), transparent 22%),
    radial-gradient(circle at 78% 20%, rgba(59, 222, 255, 0.1), transparent 18%),
    radial-gradient(circle at 50% 110%, rgba(255, 193, 91, 0.08), transparent 26%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 45%, var(--bg-bottom) 100%);
  color: var(--text);
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overscroll-behavior: none;
  overflow-x: hidden;
}

.shell {
  width: min(760px, 100%);
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
}

.stage-shell {
  position: relative;
  width: min(calc(100vw - 28px), calc((100dvh - 44px) * 9 / 16 + 32px), 680px);
  padding: 16px;
  border-radius: 32px;
  background: rgba(6, 9, 18, 0.42);
  box-shadow:
    0 28px 80px rgba(4, 7, 15, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
}

.stage-shell::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 26px;
  background:
    radial-gradient(circle at 18% 16%, rgba(122, 172, 255, 0.12), transparent 24%),
    radial-gradient(circle at 82% 78%, rgba(130, 246, 255, 0.08), transparent 22%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 30%);
  pointer-events: none;
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 24px;
  background: transparent;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  touch-action: none;
}

.hud {
  position: absolute;
  inset: 28px 28px auto;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  z-index: 3;
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.hud--hidden {
  opacity: 0;
  transform: translateY(-8px);
}

.hud__cluster {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.hud__cluster--right {
  justify-content: flex-end;
}

.hud__block {
  display: grid;
  gap: 2px;
  padding: 8px 10px;
  border-radius: 14px;
  background: rgba(7, 11, 22, 0.24);
  backdrop-filter: blur(10px);
}

.hud__block--right {
  text-align: right;
}

.hud__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.hud strong {
  font-size: clamp(1.4rem, 3vw, 2.5rem);
  line-height: 1;
}

.feedback {
  position: absolute;
  inset: 114px 0 auto;
  text-align: center;
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
  pointer-events: none;
  text-shadow: 0 0 24px rgba(255, 244, 144, 0.8);
}

.feedback--visible {
  opacity: 1;
  transform: translateY(0);
}

.feedback--hot {
  color: #65ff92;
  text-shadow: 0 0 26px rgba(101, 255, 146, 0.86);
}

.panel {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 22px;
  padding: 48px 34px;
  text-align: center;
  background: linear-gradient(180deg, rgba(7, 11, 22, 0.18), rgba(7, 11, 22, 0.92));
  border-radius: 24px;
  z-index: 4;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  overflow-y: auto;
}

.panel--splash {
  background:
    radial-gradient(circle at top, rgba(255, 215, 106, 0.14), transparent 32%),
    linear-gradient(180deg, rgba(6, 10, 21, 0.3), rgba(6, 10, 21, 0.92));
}

.panel--title {
  overflow: hidden;
}

.panel--visible {
  opacity: 1;
  pointer-events: auto;
}

.panel__hero {
  display: grid;
  gap: 14px;
  justify-items: center;
}

.panel__microcopy {
  margin: 0;
  max-width: 42ch;
  color: rgba(224, 232, 255, 0.68);
  line-height: 1.5;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--accent);
}

.panel h1,
.panel h2,
.notes h2 {
  margin: 0;
  line-height: 0.94;
}

.panel h1,
.panel h2 {
  font-size: clamp(2.4rem, 7vw, 4.6rem);
}

.panel__lede,
.notes p,
.checklist {
  margin: 0;
  max-width: 34ch;
  color: var(--muted);
  line-height: 1.55;
}

.panel__controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  width: min(100%, 560px);
}

.menu-shell {
  width: min(100%, 656px);
  display: grid;
  gap: 24px;
  justify-items: center;
}

.menu-cta {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.menu-cta .button:first-child {
  grid-column: 1 / -1;
  min-height: 68px;
  font-size: 1.08rem;
}

.menu-strip {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-pill {
  padding: 18px 18px 16px;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 14px 28px rgba(4, 7, 15, 0.18);
  text-align: left;
  display: grid;
  gap: 6px;
}

.hero-pill strong {
  font-size: 1rem;
  line-height: 1.35;
}

.hero-pill p {
  margin: 0;
  color: var(--muted);
}

.menu-rail {
  width: 100%;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 88%);
  justify-content: start;
  gap: 18px;
  overflow-x: auto;
  overflow-y: visible;
  padding: 6px 6px 12px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.menu-rail::-webkit-scrollbar {
  display: none;
}

.menu-card {
  min-width: 0;
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 18px 36px rgba(4, 7, 15, 0.22);
  scroll-snap-align: center;
}

.menu-card__header {
  display: grid;
  gap: 6px;
  text-align: left;
}

.menu-card__header strong {
  font-size: 1.15rem;
  line-height: 1.25;
}

.menu-settings {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.menu-settings .button,
.menu-cta .button {
  width: 100%;
}

.menu-rail__hint {
  margin: 0;
  color: rgba(246, 242, 255, 0.66);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.button {
  border: 0;
  border-radius: 999px;
  min-height: 56px;
  padding: 16px 24px;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  color: #120c03;
  background: linear-gradient(135deg, var(--accent) 0%, #fff2ba 100%);
  box-shadow: 0 12px 30px rgba(4, 7, 15, 0.3);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 36px rgba(10, 8, 23, 0.24);
}

.button--ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.button--launch {
  position: relative;
  overflow: hidden;
  box-shadow:
    0 16px 36px rgba(255, 188, 73, 0.22),
    0 10px 28px rgba(4, 7, 15, 0.3);
}

.button--launch::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.38) 48%, transparent 100%);
  transform: translateX(-140%);
  animation: launch-shimmer 3.2s ease-in-out infinite;
}

.profile-grid {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.profile-grid--compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 520px;
}

.stat-card {
  padding: 16px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 6px;
}

.stat-card__label,
.progress-strip__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.stat-card__value {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.progress-strip {
  width: min(100%, 540px);
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  display: grid;
  gap: 12px;
  text-align: left;
}

.feature-grid {
  width: min(100%, 560px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.feature-grid--compact {
  width: 100%;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-card,
.legal-strip {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.info-card {
  display: grid;
  gap: 8px;
  text-align: left;
}

.info-card strong,
.legal-strip strong {
  font-size: 1rem;
  line-height: 1.35;
}

.info-card p,
.legal-strip p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.progress-strip strong {
  display: block;
  margin-top: 4px;
}

.notes {
  position: fixed;
  top: 18px;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  width: min(380px, calc(100vw - 28px));
  display: grid;
  gap: 18px;
  align-content: start;
  padding: 56px 18px 18px;
  border-radius: 28px;
  background: rgba(8, 11, 22, 0.78);
  box-shadow:
    0 20px 50px rgba(4, 7, 15, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  transform: translateX(calc(100% + 28px));
  transition: transform 180ms ease;
  overflow: auto;
}

@keyframes launch-shimmer {
  0%,
  62%,
  100% {
    transform: translateX(-140%);
  }
  82% {
    transform: translateX(140%);
  }
}

.notes--open {
  transform: translateX(0);
}

.notes__close {
  position: absolute;
  top: 16px;
  right: 16px;
  border: 0;
  border-radius: 999px;
  min-height: 42px;
  padding: 10px 14px;
  font: inherit;
  font-weight: 700;
  color: var(--text);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  cursor: pointer;
}

.notes__art {
  overflow: hidden;
  border-radius: 20px;
  min-height: 220px;
}

.notes__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.notes__copy {
  display: grid;
  gap: 12px;
}

.notes h2 {
  font-size: 1.8rem;
}

.checklist {
  padding-left: 18px;
}

.legal-strip {
  display: grid;
  gap: 8px;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0.12em 0.38em;
  border-radius: 0.45em;
  background: rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.18);
  font: inherit;
  font-size: 0.92em;
  color: var(--text);
}

@media (max-width: 960px) {
  body {
    padding: 14px;
  }

  .stage-shell {
    padding: 12px;
  }
}

@media (min-width: 700px) and (max-width: 1180px) {
  body {
    padding: 16px;
  }

  .stage-shell {
    width: min(calc(100vw - 36px), calc((100dvh - 32px) * 9 / 16 + 36px), 760px);
    padding: 18px;
  }

  .panel {
    padding: 42px 32px;
  }

  .panel__controls {
    width: min(100%, 620px);
  }

  .menu-shell {
    width: min(100%, 720px);
  }

  .button {
    min-height: 54px;
  }
}

@media (max-width: 640px) {
  body {
    padding: 0;
  }

  .shell {
    gap: 0;
    width: 100%;
  }

  .stage-shell {
    padding: 0;
    border-radius: 0;
    min-height: 100dvh;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
  }

  .stage-shell::before {
    inset: 0;
    border-radius: 0;
  }

  canvas {
    border-radius: 0;
    min-height: 100dvh;
  }

  .hud {
    inset: 18px 14px auto;
  }

  .hud__cluster {
    gap: 8px;
  }

  .hud__block {
    padding: 6px 8px;
    border-radius: 12px;
  }

  .hud__label {
    font-size: 0.62rem;
    letter-spacing: 0.14em;
  }

  .hud strong {
    font-size: clamp(1rem, 4.2vw, 1.24rem);
  }

  .panel {
    padding: 48px 20px 36px;
  }

  .menu-shell {
    width: 100%;
    gap: 18px;
  }

  .menu-cta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .menu-strip {
    grid-template-columns: 1fr;
  }

  .menu-cta .button:first-child {
    min-height: 72px;
  }

  .menu-card {
    padding: 18px;
  }

  .menu-settings {
    grid-template-columns: 1fr;
  }

  .profile-grid,
  .profile-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid,
  .feature-grid--compact {
    grid-template-columns: 1fr;
  }

  .progress-strip {
    text-align: center;
  }

  .panel__controls {
    width: 100%;
  }

  .button {
    width: 100%;
  }

  .notes {
    top: 0;
    right: 0;
    bottom: 0;
    width: min(92vw, 420px);
    border-radius: 28px 0 0 28px;
    background: rgba(8, 11, 22, 0.92);
  }
}