:root {
  --bg: #0f1722;
  --bg-soft: #162131;
  --surface: rgba(142, 172, 209, 0.08);
  --surface-strong: rgba(142, 172, 209, 0.14);
  --line: rgba(142, 172, 209, 0.18);
  --text: #eef3fb;
  --muted: rgba(238, 243, 251, 0.72);
  --accent: #7dc9ff;
  --accent-strong: #5b89c7;
  --accent-warm: #ff9f80;
  --success: #98f5bc;
  --radius: 26px;
  --shadow: 0 24px 70px rgba(4, 10, 20, 0.36);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(125, 201, 255, 0.22), transparent 28rem),
    radial-gradient(circle at left 18%, rgba(152, 245, 188, 0.08), transparent 24rem),
    var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 58%, transparent 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
select {
  font: inherit;
}

button:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.75rem 1rem;
  background: #fff;
  color: #111;
  border-radius: 999px;
  z-index: 20;
}

.skip-link:focus {
  top: 1rem;
}

.site-header,
.demo-shell {
  width: min(1120px, calc(100vw - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.9rem;
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
}

.brand-mark {
  width: 2.2rem;
  height: 2.2rem;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand-copy {
  display: grid;
  gap: 0.1rem;
}

.brand-copy strong {
  font-size: 1rem;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.82rem;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  min-height: 2.9rem;
  padding: 0 1rem;
  border-radius: 999px;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.8rem;
  padding: 0 0.85rem;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.brand:hover .brand-copy span,
.brand:focus-visible .brand-copy span {
  color: var(--text);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.05);
}

.demo-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 0.92fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: 1rem 0 2.5rem;
  align-items: start;
}

.demo-intro,
.board-panel {
  position: relative;
}

.demo-intro {
  display: grid;
  gap: 1.15rem;
  padding: clamp(0.3rem, 1vw, 0.6rem) 0 0;
}

.eyebrow,
.board-label,
.overlay-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  color: var(--accent);
}

.demo-intro h1,
.overlay-card h2 {
  margin: 0;
  font-family: "Newsreader", serif;
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.demo-intro h1 {
  font-size: clamp(2.6rem, 6vw, 4.7rem);
}

.intro-copy,
.instruction-card p,
.overlay-card p,
.status-bar p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.intro-tags span,
#actionsIndicator {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0.42rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(125, 201, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 0.9rem;
}

.instruction-card {
  padding: 0.15rem 0 0;
  max-width: 42rem;
}

.instruction-card strong {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 1rem;
}

.board-panel {
  display: grid;
  gap: 1.15rem;
  padding: 0;
}

.board-top,
.status-bar,
.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
}

.board-top strong {
  display: block;
  margin-top: 0.3rem;
  font-size: 1.15rem;
}

.status-bar {
  flex-wrap: wrap;
  padding: 0.15rem 0;
}

.canvas-shell {
  position: relative;
  min-height: 720px;
  border-radius: 1.4rem;
  overflow: hidden;
  border: 0;
  background: transparent;
  box-shadow: 0 28px 80px rgba(4, 10, 20, 0.42);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: manipulation;
  cursor: grab;
}

#gameCanvas.is-aiming {
  cursor: grabbing;
}

.overlay-card {
  position: absolute;
  inset: auto 1rem 1rem 1rem;
  display: grid;
  gap: 0.9rem;
  padding: 1.15rem;
  border-radius: 1.35rem;
  border: 1px solid rgba(125, 201, 255, 0.14);
  background: rgba(8, 14, 24, 0.84);
  backdrop-filter: blur(12px);
}

.overlay-card.is-hidden {
  display: none;
}

.overlay-actions,
.control-row,
.board-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.82rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.control:hover,
.control:focus-visible {
  transform: translateY(-1px);
}

.control.primary {
  color: #07111d;
  background: linear-gradient(135deg, var(--accent), var(--success));
}

.control.primary.is-live {
  box-shadow:
    0 0 0 1px rgba(152, 245, 188, 0.3),
    0 0 0 8px rgba(152, 245, 188, 0.08);
}

.control.ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.control:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

@media (max-width: 980px) {
  .demo-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header,
  .demo-shell {
    width: min(100vw - 1rem, 1120px);
  }

  .site-header {
    padding-bottom: 0.75rem;
  }

  .canvas-shell {
    min-height: auto;
  }

  .board-top,
  .status-bar,
  .control-row {
    align-items: stretch;
  }

  .board-top,
  .status-bar {
    flex-direction: column;
  }

  .board-actions,
  .control-row {
    width: 100%;
  }

  .control {
    width: 100%;
  }

  .overlay-card {
    inset: auto 0.75rem 0.75rem 0.75rem;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.45rem);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.75rem;
    border-radius: 24px;
    background: rgba(15, 16, 20, 0.96);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem 0.9rem;
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}