:root {
  --bg-top: #08101f;
  --bg-bottom: #130a1b;
  --panel: rgba(10, 17, 31, 0.78);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #eef3ff;
  --muted: #97a9c7;
  --accent: #ff8f3f;
  --accent-strong: #ffb34f;
  --cool: #5cd4ff;
  --danger: #ff5d7a;
  --shadow: rgba(0, 0, 0, 0.35);
  --button: rgba(255, 255, 255, 0.06);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(92, 212, 255, 0.18), transparent 34%),
    radial-gradient(circle at bottom right, rgba(255, 143, 63, 0.2), transparent 30%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  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: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 85%);
  pointer-events: none;
}

.app-shell {
  width: min(1200px, calc(100% - 24px));
  margin: 0 auto;
  padding: calc(16px + env(safe-area-inset-top, 0px)) 0 calc(20px + env(safe-area-inset-bottom, 0px));
}

.hero-card,
.panel,
.controls-card,
.board-frame {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: 0 24px 60px var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  border-radius: 28px;
  padding: 20px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.72rem;
  color: var(--cool);
}

.hero-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
}

h1,
h2,
p,
ul {
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 7vw, 3.8rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cool);
}

.hero-copy,
.panel-copy,
.instruction-list {
  color: var(--muted);
  line-height: 1.55;
}

.hero-copy {
  max-width: 56ch;
  margin-top: 10px;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr) minmax(220px, 280px);
  gap: 18px;
  align-items: start;
}

.info-column {
  display: grid;
  gap: 18px;
}

.board-column {
  display: grid;
  gap: 18px;
}

.panel,
.controls-card {
  border-radius: 24px;
  padding: 18px;
}

.stats-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stat-block {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 8px;
}

.stat-block strong {
  font-size: 1.7rem;
}

.meter-wrap {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.meter-track {
  flex: 1;
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cool), var(--accent-strong));
  box-shadow: 0 0 18px rgba(92, 212, 255, 0.4);
  transition: width 140ms ease;
}

.panel-copy {
  margin-top: 10px;
}

.preview-block {
  display: grid;
  gap: 12px;
}

.preview-block canvas {
  width: min(100%, 180px);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hold-panel .preview-block,
.next-panel .preview-block {
  justify-items: center;
}

.hold-panel canvas {
  width: min(100%, 140px);
}

.next-panel {
  padding-block: 16px 18px;
}

.next-panel canvas {
  width: min(100%, 168px);
}

.board-frame {
  position: relative;
  padding: 14px;
  border-radius: 28px;
  will-change: transform;
}

.board-frame.shake-light {
  animation: board-shake-light 170ms ease;
}

.board-frame.shake-heavy {
  animation: board-shake-heavy 240ms ease;
}

#boardCanvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22px;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 34%),
    linear-gradient(180deg, #182339, #0b1120 56%, #070b14);
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 14px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 12px;
  padding: 28px;
  border-radius: 22px;
  text-align: center;
  background: rgba(7, 11, 20, 0.78);
  transition: opacity 160ms ease, visibility 160ms ease;
}

.overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.overlay-kicker {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.72rem;
  color: var(--accent-strong);
}

.primary-button,
.ghost-button,
.control-button {
  border: 0;
  border-radius: 18px;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease;
  -webkit-tap-highlight-color: transparent;
}

.primary-button,
.control-button {
  background: linear-gradient(135deg, rgba(255, 143, 63, 0.92), rgba(255, 191, 77, 0.92));
  box-shadow: 0 16px 30px rgba(255, 143, 63, 0.28);
}

.primary-button {
  padding: 14px 22px;
  font-weight: 700;
}

.ghost-button {
  background: var(--button);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 12px 18px;
}

.control-button {
  padding: 14px 16px;
  min-height: 56px;
  font-weight: 700;
}

.control-button.wide,
.ghost-button.wide {
  width: 100%;
}

.control-button.accent {
  background: linear-gradient(135deg, rgba(92, 212, 255, 0.92), rgba(115, 247, 210, 0.92));
  color: #062433;
}

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

.control-button:active,
.ghost-button:active,
.primary-button:active {
  transform: translateY(1px) scale(0.99);
}

.control-button:disabled,
.ghost-button:disabled {
  opacity: 0.45;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.controls-card {
  display: grid;
  gap: 12px;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.control-row:nth-child(2) {
  grid-template-columns: 1.5fr 1fr;
}

.instruction-list {
  margin-top: 12px;
  padding-left: 18px;
}

.instruction-list li + li {
  margin-top: 8px;
}

kbd {
  border-radius: 8px;
  padding: 0.14rem 0.42rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font: inherit;
}

.settings-grid {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.setting-row,
.setting-slider {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.setting-title {
  display: block;
  font-weight: 700;
}

.setting-copy {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  line-height: 1.4;
}

.toggle {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
}

.toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.toggle-track {
  position: relative;
  width: 58px;
  height: 32px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 160ms ease, border-color 160ms ease;
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #f7fbff;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.3);
  transition: transform 160ms ease;
}

.toggle input:checked + .toggle-track {
  background: linear-gradient(135deg, rgba(92, 212, 255, 0.82), rgba(115, 247, 210, 0.82));
  border-color: rgba(92, 212, 255, 0.45);
}

.toggle input:checked + .toggle-track::after {
  transform: translateX(26px);
}

.slider-line {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.slider-line input[type="range"] {
  width: min(180px, 46vw);
  accent-color: var(--accent-strong);
}

.slider-line output {
  min-width: 48px;
  text-align: right;
  font-weight: 700;
}

@keyframes board-shake-light {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  25% {
    transform: translate3d(-3px, 0, 0);
  }
  50% {
    transform: translate3d(3px, 0, 0);
  }
  75% {
    transform: translate3d(-2px, 1px, 0);
  }
}

@keyframes board-shake-heavy {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  20% {
    transform: translate3d(-5px, 0, 0);
  }
  40% {
    transform: translate3d(5px, 1px, 0);
  }
  60% {
    transform: translate3d(-4px, -1px, 0);
  }
  80% {
    transform: translate3d(4px, 0, 0);
  }
}

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

  .board-column {
    order: -1;
  }

  .secondary {
    grid-auto-flow: row;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100%, calc(100% - 16px));
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
  }

  .hero-card,
  .panel,
  .controls-card,
  .board-frame {
    border-radius: 22px;
  }

  .hero-card {
    padding: 16px;
  }

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

  .setting-row,
  .setting-slider {
    flex-direction: column;
    align-items: stretch;
  }

  .slider-line input[type="range"] {
    width: 100%;
  }

  .control-row {
    grid-template-columns: 1fr;
  }

  .control-row:nth-child(2) {
    grid-template-columns: 1fr;
  }

  .overlay {
    padding: 22px;
  }

  .crypto-list {
    margin-top: 1rem;
  }

  .crypto-item {
    margin-bottom: 1rem;
  }

  .crypto-item code {
    display: block;
    background: rgba(0, 0, 0, 0.4);
    padding: 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.75rem; /* Small enough to fit most mobile screens */
    word-break: break-all; /* Prevents address from overflowing the panel */
    color: var(--cool); /* Uses your light blue variable */
    margin-top: 4px;
  }
}