/**
 * GAMEPAD RUNTIME — Master stylesheet
 * https://static.mreshank.com/gamepad/styles.css
 *
 * Use with semantic HTML + these classes. No other CSS required for UI.
 * Requires: Syne, DM Sans, IBM Plex Mono (see GP_FONT_URL in docs)
 */

/* ─── Tokens ─────────────────────────────────────────────────────────── */
:root {
  --gp-bg: #030408;
  --gp-bg-elevated: #0a0c14;
  --gp-surface: rgba(10, 12, 20, 0.78);
  --gp-surface-solid: #0e1018;
  --gp-border: rgba(255, 255, 255, 0.09);
  --gp-border-strong: rgba(255, 255, 255, 0.16);
  --gp-text: #e8eaef;
  --gp-text-muted: rgba(232, 234, 239, 0.55);
  --gp-text-faint: rgba(232, 234, 239, 0.32);
  --gp-accent: #00e8cc;
  --gp-accent-dim: rgba(0, 232, 204, 0.15);
  --gp-accent-glow: rgba(0, 232, 204, 0.35);
  --gp-warm: #ff8a4c;
  --gp-warn: #f5b942;
  --gp-ok: #42ffb2;
  --gp-game: #ff4fd8;
  --gp-story: #9d7aff;
  --gp-demo: #00c4ff;
  --gp-html5: #c8ff00;
  --gp-naive: #ff6b3d;
  --gp-font-display: "Syne", system-ui, sans-serif;
  --gp-font-body: "DM Sans", system-ui, sans-serif;
  --gp-font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --gp-radius-sm: 6px;
  --gp-radius: 12px;
  --gp-radius-lg: 18px;
  --gp-radius-xl: 24px;
  --gp-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  --gp-z-chrome: 40;
  --gp-z-overlay: 50;
  --gp-z-modal: 60;
  --gp-canvas-bg: #030408;
  --gp-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --gp-dur: 220ms;
}

/* ─── Reset (scoped via .gp-root on body) ────────────────────────────── */
.gp-root,
.gp-root * {
  box-sizing: border-box;
}

.gp-root {
  margin: 0;
  min-height: 100%;
  background: var(--gp-bg);
  color: var(--gp-text);
  font-family: var(--gp-font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.gp-root::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.gp-root a {
  color: var(--gp-accent);
  text-decoration: none;
  transition: color var(--gp-dur) var(--gp-ease);
}

.gp-root a:hover {
  color: #fff;
}

.gp-root code,
.gp-root .gp-mono {
  font-family: var(--gp-font-mono);
  font-size: 0.9em;
}

/* ─── Layout ─────────────────────────────────────────────────────────── */
.gp-viewport {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
}

.gp-viewport--immersive {
  overflow: hidden;
  height: 100vh;
  height: 100dvh;
}

.gp-container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

.gp-container--narrow {
  width: min(720px, 100% - 2.5rem);
}

.gp-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.gp-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.gp-row--end {
  justify-content: flex-end;
}

/* ─── Parallax hub scene ───────────────────────────────────────────────── */
.gp-parallax {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  perspective: 1400px;
  perspective-origin: 50% 40%;
}

.gp-parallax__bg {
  position: fixed;
  inset: -20%;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(0, 232, 204, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 45% at 85% 75%, rgba(157, 122, 255, 0.1), transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(255, 79, 216, 0.08), transparent 45%),
    var(--gp-bg);
}

.gp-parallax__grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, black, transparent);
  transform: translateZ(-120px) scale(1.15);
  transform-style: preserve-3d;
}

.gp-parallax__orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  transform-style: preserve-3d;
  animation: gp-float 18s var(--gp-ease) infinite alternate;
}

.gp-parallax__orb--a {
  width: 320px;
  height: 320px;
  top: 8%;
  left: -5%;
  background: rgba(0, 232, 204, 0.2);
  transform: translateZ(-80px);
}

.gp-parallax__orb--b {
  width: 280px;
  height: 280px;
  bottom: 10%;
  right: -8%;
  background: rgba(157, 122, 255, 0.18);
  animation-delay: -6s;
  transform: translateZ(-60px);
}

.gp-parallax__content {
  position: relative;
  z-index: 2;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 2rem) 4rem;
  transform: translateZ(0);
  transform-style: preserve-3d;
}

.gp-parallax__content[data-depth] {
  transition: transform 0.12s var(--gp-ease);
}

@keyframes gp-float {
  from {
    transform: translateZ(-80px) translate(0, 0);
  }
  to {
    transform: translateZ(-40px) translate(24px, -18px);
  }
}

/* ─── Typography ─────────────────────────────────────────────────────── */
.gp-eyebrow {
  font-family: var(--gp-font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gp-accent);
}

.gp-display {
  font-family: var(--gp-font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0.75rem 0 0;
}

.gp-display__sub {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--gp-font-body);
  font-weight: 400;
  font-size: clamp(1.05rem, 2.5vw, 1.45rem);
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--gp-text-muted);
}

.gp-lead {
  margin: 1.25rem 0 0;
  max-width: 38rem;
  font-size: 1rem;
  color: var(--gp-text-muted);
}

.gp-heading {
  font-family: var(--gp-font-display);
  font-weight: 600;
  font-size: 1.35rem;
  margin: 0;
}

.gp-section-label {
  font-family: var(--gp-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gp-text-faint);
  margin: 0 0 0.75rem;
}

/* ─── Cards (hub + pages) ──────────────────────────────────────────────── */
.gp-card-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2.5rem;
  list-style: none;
  padding: 0;
}

@media (min-width: 640px) {
  .gp-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.gp-card {
  display: block;
  position: relative;
  padding: 1.35rem 1.4rem 1.5rem;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  background: var(--gp-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition:
    border-color var(--gp-dur) var(--gp-ease),
    transform var(--gp-dur) var(--gp-ease),
    box-shadow var(--gp-dur) var(--gp-ease);
}

.gp-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--gp-dur) var(--gp-ease);
  pointer-events: none;
}

.gp-card:hover {
  border-color: var(--gp-border-strong);
  box-shadow: var(--gp-shadow);
}

.gp-card:hover::before {
  opacity: 1;
}

.gp-card__tag {
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gp-text-faint);
}

.gp-card__title {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--gp-font-display);
  font-size: 1.2rem;
  font-weight: 600;
}

.gp-card__desc {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--gp-text-muted);
}

.gp-card--game::before {
  background: linear-gradient(135deg, rgba(255, 79, 216, 0.12), transparent 60%);
}
.gp-card--game:hover {
  border-color: rgba(255, 79, 216, 0.45);
}
.gp-card--game .gp-card__tag {
  color: var(--gp-game);
}

.gp-card--story::before {
  background: linear-gradient(135deg, rgba(157, 122, 255, 0.12), transparent 60%);
}
.gp-card--story:hover {
  border-color: rgba(157, 122, 255, 0.45);
}
.gp-card--story .gp-card__tag {
  color: var(--gp-story);
}

.gp-card--demo::before {
  background: linear-gradient(135deg, rgba(0, 196, 255, 0.1), transparent 60%);
}
.gp-card--demo:hover {
  border-color: rgba(0, 196, 255, 0.4);
}
.gp-card--demo .gp-card__tag {
  color: var(--gp-demo);
}

.gp-card--html5::before {
  background: linear-gradient(135deg, rgba(200, 255, 0, 0.08), transparent 60%);
}
.gp-card--html5:hover {
  border-color: rgba(200, 255, 0, 0.35);
}
.gp-card--html5 .gp-card__tag {
  color: var(--gp-html5);
}

/* ─── Chips / toolbar links ──────────────────────────────────────────── */
.gp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.gp-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--gp-border);
  background: rgba(0, 0, 0, 0.35);
  font-size: 0.78rem;
  color: var(--gp-text-muted);
  transition:
    border-color var(--gp-dur) var(--gp-ease),
    color var(--gp-dur) var(--gp-ease),
    background var(--gp-dur) var(--gp-ease);
}

.gp-chip:hover {
  border-color: var(--gp-border-strong);
  color: var(--gp-text);
  background: rgba(255, 255, 255, 0.04);
}

/* ─── Buttons ──────────────────────────────────────────────────────────── */
.gp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: var(--gp-radius-sm);
  border: 1px solid var(--gp-border);
  background: rgba(0, 0, 0, 0.45);
  font-family: var(--gp-font-mono);
  font-size: 0.72rem;
  color: var(--gp-text-muted);
  cursor: pointer;
  transition:
    border-color var(--gp-dur) var(--gp-ease),
    color var(--gp-dur) var(--gp-ease),
    background var(--gp-dur) var(--gp-ease);
}

.gp-btn:hover {
  border-color: var(--gp-border-strong);
  color: var(--gp-text);
  background: rgba(255, 255, 255, 0.06);
}

.gp-btn:focus-visible {
  outline: 2px solid var(--gp-accent);
  outline-offset: 2px;
}

.gp-btn--accent {
  border-color: rgba(0, 232, 204, 0.35);
  color: var(--gp-accent);
  background: var(--gp-accent-dim);
}

.gp-btn--accent:hover {
  border-color: var(--gp-accent);
  color: #fff;
  background: rgba(0, 232, 204, 0.22);
}

.gp-btn--game {
  border-color: rgba(255, 79, 216, 0.35);
  color: #ffb8ef;
}
.gp-btn--naive {
  border-color: rgba(255, 107, 61, 0.35);
  color: #ffb899;
}
.gp-btn--ghost {
  background: transparent;
}

.gp-btn--block {
  width: 100%;
}

/* ─── Chrome bar (presenter / top-right) ───────────────────────────────── */
.gp-chrome {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: var(--gp-z-chrome);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
  pointer-events: none;
}

.gp-chrome > * {
  pointer-events: auto;
}

.gp-chrome__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.gp-chrome__hint {
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  color: var(--gp-text-faint);
}

.gp-chrome--left {
  left: 1rem;
  right: auto;
  align-items: flex-start;
}

/* ─── HUD panels (gamepad telemetry) ───────────────────────────────────── */
.gp-hud {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: var(--gp-z-chrome);
  max-width: min(22rem, calc(100vw - 2rem));
  padding: 1rem 1.1rem;
  border-radius: var(--gp-radius);
  border: 1px solid var(--gp-border);
  background: var(--gp-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  font-family: var(--gp-font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  pointer-events: none;
}

.gp-hud__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.65rem;
  margin-bottom: 0.65rem;
  border-bottom: 1px solid var(--gp-border);
}

.gp-hud__label {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gp-text-faint);
}

.gp-hud__meta {
  color: var(--gp-text-faint);
}

.gp-hud__line {
  color: var(--gp-text-muted);
}

.gp-hud__device {
  color: var(--gp-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gp-hud__slots {
  margin-top: 0.35rem;
  font-size: 0.62rem;
  color: var(--gp-demo);
}

.gp-hud--naive {
  border-color: rgba(255, 107, 61, 0.25);
}
.gp-hud--naive .gp-hud__label {
  color: var(--gp-naive);
}

.gp-hud--game .gp-hud__label {
  color: var(--gp-game);
}

.gp-hud--game.is-hit {
  animation: gp-hud-hit 0.4s ease-out;
}

.gp-game-mission {
  margin-top: 0.5rem !important;
  line-height: 1.45 !important;
  color: var(--gp-text-muted) !important;
  font-size: 0.72rem !important;
}

.gp-game-toast {
  margin: 0.65rem 0 0;
  min-height: 1.25rem;
  font-family: var(--gp-font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity 0.15s ease;
  text-shadow: 0 0 20px currentColor;
}

@keyframes gp-hud-hit {
  0%,
  100% {
    box-shadow: none;
  }
  40% {
    box-shadow: 0 0 0 2px rgba(251, 113, 133, 0.55);
  }
}

.gp-hud--story .gp-hud__label {
  color: var(--gp-story);
}

.gp-status--ok {
  color: var(--gp-ok) !important;
}

.gp-status--wait {
  color: var(--gp-warn) !important;
}

.gp-status--warn {
  color: var(--gp-naive) !important;
}

/* ─── Connect overlay ──────────────────────────────────────────────────── */
.gp-connect {
  position: absolute;
  inset: 0;
  z-index: var(--gp-z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 4, 8, 0.72);
  backdrop-filter: blur(8px);
  transition: opacity 0.35s var(--gp-ease);
  pointer-events: none;
}

.gp-connect.is-hidden {
  opacity: 0;
}

.gp-connect__panel {
  max-width: 22rem;
  padding: 2rem 2.25rem;
  text-align: center;
  border-radius: var(--gp-radius-xl);
  border: 1px solid var(--gp-border-strong);
  background: var(--gp-surface-solid);
  box-shadow: var(--gp-shadow);
}

.gp-connect__title {
  font-family: var(--gp-font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.gp-connect__text {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  color: var(--gp-text-muted);
}

.gp-connect__hint {
  margin: 1rem 0 0;
  font-family: var(--gp-font-mono);
  font-size: 0.68rem;
  color: var(--gp-text-faint);
}

/* ─── Canvas / 3D viewport shell ───────────────────────────────────────── */
.gp-canvas-wrap {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: var(--gp-canvas-bg);
}

.gp-canvas-wrap canvas {
  display: block;
  touch-action: none;
}

.gp-legend {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  z-index: var(--gp-z-chrome);
  max-width: 14rem;
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  line-height: 1.5;
  text-align: right;
  color: var(--gp-text-faint);
  pointer-events: none;
}

.gp-legend--left {
  right: auto;
  left: 1rem;
  text-align: left;
}

/* ─── Modals / side panels ─────────────────────────────────────────────── */
.gp-modal-backdrop {
  position: absolute;
  inset: 0;
  z-index: var(--gp-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(3, 4, 8, 0.78);
  backdrop-filter: blur(10px);
}

.gp-modal {
  width: min(28rem, 100%);
  max-height: 85vh;
  overflow: auto;
  padding: 1.75rem;
  border-radius: var(--gp-radius-xl);
  border: 1px solid var(--gp-border-strong);
  background: var(--gp-surface-solid);
  box-shadow: var(--gp-shadow);
}

.gp-modal--story {
  border-color: rgba(157, 122, 255, 0.3);
}

.gp-modal__eyebrow {
  font-family: var(--gp-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.gp-modal__title {
  font-family: var(--gp-font-display);
  font-size: 1.65rem;
  font-weight: 600;
  margin: 0.5rem 0 0;
}

.gp-modal__body {
  margin: 1.1rem 0 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--gp-text-muted);
}

.gp-story-hook {
  margin: 0.85rem 0 0;
  font-family: var(--gp-font-display);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
}

.gp-story-bullets {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--gp-text);
}

.gp-story-bullets li {
  margin-top: 0.45rem;
}

.gp-story-bullets li::marker {
  color: var(--gp-story);
}

.gp-story-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.35rem;
}

.gp-story-nearby {
  font-family: var(--gp-font-display);
  font-size: 1rem;
  font-weight: 600;
}

.gp-story-progress {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.gp-story-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  border: 2px solid var(--gp-border-strong);
  opacity: 0.5;
}

.gp-story-dot.is-visited {
  opacity: 1;
}

.gp-story-dot.is-near {
  opacity: 1;
  box-shadow: 0 0 10px currentColor;
}

/* Presenter notes drawer */
.gp-drawer {
  position: absolute;
  inset-block: 0;
  right: 0;
  z-index: var(--gp-z-modal);
  display: flex;
  flex-direction: column;
  width: min(24rem, 100%);
  border-left: 1px solid var(--gp-border);
  background: rgba(8, 10, 16, 0.96);
  backdrop-filter: blur(24px);
  box-shadow: -12px 0 48px rgba(0, 0, 0, 0.5);
}

.gp-drawer__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--gp-border);
}

.gp-drawer__scroll {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.1rem 1.5rem;
  font-size: 0.8rem;
}

.gp-drawer__section {
  margin-bottom: 1.25rem;
}

.gp-drawer__time {
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  color: var(--gp-accent);
}

.gp-drawer__section-title {
  margin: 0.25rem 0 0;
  font-weight: 600;
  color: var(--gp-text);
}

.gp-drawer__list {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
  color: var(--gp-text-muted);
}

.gp-drawer__qa dt {
  font-weight: 600;
  color: var(--gp-text);
  margin-top: 0.75rem;
}

.gp-drawer__qa dd {
  margin: 0.25rem 0 0;
  color: var(--gp-text-muted);
}

/* Keyboard help */
.gp-help-backdrop {
  position: absolute;
  inset: 0;
  z-index: var(--gp-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.65);
}

.gp-help {
  width: min(20rem, 100%);
  padding: 1.35rem;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border-strong);
  background: var(--gp-surface-solid);
}

.gp-help__title {
  font-family: var(--gp-font-display);
  font-size: 1rem;
  margin: 0 0 0.85rem;
}

.gp-kbd-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.gp-kbd-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0;
  font-size: 0.78rem;
  color: var(--gp-text-muted);
}

.gp-kbd {
  display: inline-block;
  min-width: 1.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  border: 1px solid var(--gp-border-strong);
  background: rgba(255, 255, 255, 0.05);
  font-family: var(--gp-font-mono);
  font-size: 0.68rem;
  text-align: center;
  color: var(--gp-text);
}

/* ─── Page shells (stage, code, rehearse, backup) ──────────────────────── */
.gp-page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 3vw, 1.75rem);
}

.gp-page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--gp-border);
}

.gp-page-header__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.gp-panel {
  padding: 1.25rem;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  background: var(--gp-surface);
}

.gp-panel--callout {
  border-color: rgba(0, 232, 204, 0.2);
  background: rgba(0, 232, 204, 0.04);
}

/* Code walkthrough */
.gp-code-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.gp-code-tab {
  padding: 0.45rem 0.85rem;
  border-radius: var(--gp-radius-sm);
  border: 1px solid var(--gp-border);
  background: transparent;
  font-family: var(--gp-font-mono);
  font-size: 0.68rem;
  color: var(--gp-text-muted);
  cursor: pointer;
  transition: all var(--gp-dur) var(--gp-ease);
}

.gp-code-tab.is-active,
.gp-code-tab:hover {
  border-color: rgba(0, 232, 204, 0.4);
  color: var(--gp-accent);
  background: var(--gp-accent-dim);
}

.gp-code-block {
  display: flex;
  flex-direction: column;
  min-height: min(70vh, 640px);
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  background: var(--gp-surface-solid);
  overflow: hidden;
}

.gp-code-block__head {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--gp-border);
}

.gp-code-block__path {
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  color: var(--gp-text-faint);
}

.gp-code-block__title {
  margin: 0.35rem 0 0;
  font-family: var(--gp-font-display);
  font-size: 0.95rem;
}

.gp-code-block__sub {
  margin: 0.25rem 0 0;
  font-size: 0.78rem;
  color: var(--gp-text-muted);
}

.gp-code-block__body {
  flex: 1;
  overflow: auto;
  padding: 0.85rem 0;
  font-family: var(--gp-font-mono);
  font-size: 0.8rem;
  line-height: 1.65;
}

.gp-code-line {
  display: block;
  padding: 0 1rem;
  color: rgba(232, 234, 239, 0.72);
  white-space: pre;
}

.gp-code-line--hi {
  background: rgba(0, 232, 204, 0.1);
  color: #b8fff5;
}

.gp-code-line__n {
  display: inline-block;
  width: 2.5rem;
  margin-right: 0.75rem;
  text-align: right;
  color: var(--gp-text-faint);
  user-select: none;
}

/* Rehearse */
.gp-rehearse {
  display: flex;
  min-height: calc(100dvh - 5rem);
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  overflow: hidden;
}

.gp-rehearse__nav {
  flex: 0 0 13rem;
  padding: 1rem;
  border-right: 1px solid var(--gp-border);
  background: rgba(0, 0, 0, 0.25);
}

.gp-rehearse__nav-btn {
  display: block;
  width: 100%;
  margin-bottom: 0.35rem;
  padding: 0.55rem 0.65rem;
  border: none;
  border-radius: var(--gp-radius-sm);
  background: transparent;
  font-family: var(--gp-font-mono);
  font-size: 0.68rem;
  text-align: left;
  color: var(--gp-text-muted);
  cursor: pointer;
  transition: background var(--gp-dur) var(--gp-ease);
}

.gp-rehearse__nav-btn.is-active,
.gp-rehearse__nav-btn:hover {
  background: var(--gp-accent-dim);
  color: var(--gp-accent);
}

.gp-rehearse__main {
  flex: 1;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.gp-progress {
  height: 4px;
  margin-top: 0.75rem;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.gp-progress__fill {
  height: 100%;
  background: var(--gp-accent);
  transition: width 0.3s var(--gp-ease);
}

.gp-progress__fill--over {
  background: var(--gp-warm);
}

.gp-timer {
  font-family: var(--gp-font-mono);
  font-size: 0.85rem;
}

.gp-timer--over {
  color: var(--gp-warm);
}

/* Stage route cards */
.gp-stage-grid {
  display: grid;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
}

@media (min-width: 640px) {
  .gp-stage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.gp-stage-card {
  display: block;
  padding: 1.25rem;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  color: inherit;
  text-decoration: none;
  transition: transform var(--gp-dur) var(--gp-ease), border-color var(--gp-dur) var(--gp-ease);
}

.gp-stage-card:hover {
  transform: translateY(-2px);
}

.gp-stage-card--fuchsia {
  border-color: rgba(255, 79, 216, 0.3);
  background: rgba(255, 79, 216, 0.06);
}
.gp-stage-card--violet {
  border-color: rgba(157, 122, 255, 0.3);
  background: rgba(157, 122, 255, 0.06);
}
.gp-stage-card--green {
  border-color: rgba(66, 255, 178, 0.25);
  background: rgba(66, 255, 178, 0.04);
}
.gp-stage-card--amber {
  border-color: rgba(245, 185, 66, 0.3);
  background: rgba(245, 185, 66, 0.05);
}
.gp-stage-card--cyan {
  border-color: rgba(0, 196, 255, 0.3);
  background: rgba(0, 196, 255, 0.05);
}
.gp-stage-card--slate {
  border-color: var(--gp-border);
  background: rgba(255, 255, 255, 0.02);
}
.gp-stage-card--rose {
  border-color: rgba(255, 100, 120, 0.3);
  background: rgba(255, 100, 120, 0.05);
}

/* Backup video */
.gp-video-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.gp-video {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--gp-radius-lg);
  box-shadow: var(--gp-shadow);
}

/* HTML5 lab (vanilla pages) ─────────────────────────────────────────── */
.gp-html5 {
  min-height: 100vh;
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 3vw, 1.5rem);
}

.gp-html5 .gp-wrap {
  width: min(52rem, 100%);
  margin-inline: auto;
}

.gp-html5 .gp-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gp-accent);
  background: var(--gp-accent-dim);
  border: 1px solid rgba(0, 232, 204, 0.2);
}

.gp-html5 .gp-serve {
  margin: 1rem 0;
  padding: 0.85rem 1rem;
  border-radius: var(--gp-radius);
  border: 1px solid rgba(0, 232, 204, 0.2);
  background: var(--gp-accent-dim);
  font-size: 0.78rem;
  color: #9ef5eb;
}

.gp-html5 canvas,
.gp-html5 #host {
  width: 100%;
  max-width: 960px;
  margin: 1rem auto;
  display: block;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  background: var(--gp-bg-elevated);
}

.gp-html5 #host {
  min-height: 60vh;
}

.gp-html5 #status.is-ok {
  color: var(--gp-demo);
}

.gp-card.is-featured {
  border-color: rgba(250, 204, 21, 0.45);
  background: rgba(250, 204, 21, 0.06);
}

.gp-html5-canvas {
  height: min(70vh, 520px);
}

.gp-html5-stage {
  position: relative;
  height: min(70vh, 420px);
  margin: 1rem 0;
  border-radius: var(--gp-radius-lg);
  border: 1px solid var(--gp-border);
  background: radial-gradient(circle at 50% 50%, var(--gp-bg-elevated), var(--gp-bg));
  overflow: hidden;
}

.gp-html5-car {
  position: absolute;
  width: 48px;
  height: 48px;
  left: 0;
  top: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--gp-game), var(--gp-story));
  box-shadow: 0 0 24px rgba(244, 114, 182, 0.55);
  will-change: transform;
}

.gp-html5-orb {
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fde047;
  box-shadow: 0 0 14px #facc15;
}

.gp-axis-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 28rem;
}

.gp-axis .gp-bar {
  height: 8px;
  margin-top: 0.35rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  position: relative;
}

.gp-axis .gp-bar .gp-mid {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gp-border-strong);
  transform: translateX(-50%);
}

.gp-axis .gp-bar .gp-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  background: linear-gradient(90deg, var(--gp-accent), var(--gp-story));
  border-radius: 4px;
}

/* Utilities ────────────────────────────────────────────────────────────── */
.gp-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.gp-pointer-none {
  pointer-events: none;
}

.gp-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gp-hide-chrome-hint {
  position: absolute;
  bottom: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--gp-z-chrome);
  font-family: var(--gp-font-mono);
  font-size: 0.62rem;
  color: var(--gp-text-faint);
  pointer-events: none;
}

/* —— Nexus Breach (/play) —— */
.gp-play-hud {
  max-width: 22rem;
}

.gp-play-codename {
  font-family: var(--gp-font-mono);
  font-size: 0.72rem;
  color: var(--gp-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.gp-play-lobby {
  margin-top: 1rem;
  max-height: 9rem;
  overflow-y: auto;
}

.gp-play-roster {
  list-style: none;
  margin: 0.35rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.gp-play-roster li {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  padding: 0.35rem 0.5rem;
  border-radius: 0.35rem;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(56, 189, 248, 0.12);
}

.gp-play-roster li.is-you {
  border-color: rgba(249, 115, 22, 0.45);
}

.gp-play-roster__name {
  font-family: var(--gp-font-mono);
  letter-spacing: 0.08em;
}

.gp-play-roster__meta {
  color: var(--gp-text-faint);
  font-size: 0.65rem;
}

.gp-play-backdrop {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, #1a2d4a 0%, #030712 65%);
}

.gp-play-backdrop__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(56, 189, 248, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

.gp-play-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 7, 18, 0.82);
  backdrop-filter: blur(6px);
}

.gp-play-modal {
  width: min(22rem, 92vw);
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(56, 189, 248, 0.25);
  background: rgba(15, 23, 42, 0.95);
}

.gp-play-input {
  width: 100%;
  margin-top: 1rem;
  padding: 0.65rem 0.75rem;
  font-family: var(--gp-font-mono);
  font-size: 0.9rem;
  color: var(--gp-text);
  background: rgba(3, 7, 18, 0.8);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 0.4rem;
}

.gp-play-error {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: #fb7185;
}

.gp-play-verdict {
  margin-top: 0.75rem;
  padding: 0.65rem;
  border-radius: 0.4rem;
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.25);
  font-size: 0.78rem;
}

.gp-play-verdict ol {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}

.gp-play-admin-unlock {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: var(--gp-text-faint);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .gp-parallax__content[data-depth] {
    transition: none !important;
  }
}