:root {
  --page-gap: 12px;
  --app-width: 100vw;
  --app-height: 100dvh;
  --card-target-width: min(96vw, 520px);
  --card-target-height: auto;
  --premium-deep-green: #05291f;
  --premium-deep-green-dark: #031a14;
  --premium-deep-green-glow: rgba(31, 92, 70, 0.62);
  --panel-bg: rgba(3, 26, 20, 0.91);
  --panel-border: rgba(255, 255, 255, 0.19);
  --panel-shadow: 0 24px 74px rgba(0, 0, 0, 0.56);
  --text: #f8fff9;
  --muted: rgba(248, 255, 249, 0.72);
  --danger: #ff6b6b;
  --accent: #effff5;
  --dead-skull-inset: clamp(6px, 1.5vw, 10px);
  --dead-skull-left: 50%;
  --dead-skull-top: 50%;
  --card-rendered-width: min(96vw, 520px);
  --card-rendered-height: 100%;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 0%, var(--premium-deep-green-glow) 0%, var(--premium-deep-green) 38%, var(--premium-deep-green-dark) 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: var(--app-height);
  touch-action: manipulation;
}

button,
input {
  font: inherit;
}

input {
  -webkit-user-select: text;
  user-select: text;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

#game {
  width: var(--app-width);
  height: var(--app-height);
  display: grid;
  grid-template: minmax(0, 1fr) / minmax(0, 1fr);
  padding:
    calc(env(safe-area-inset-top) + var(--page-gap))
    calc(env(safe-area-inset-right) + var(--page-gap))
    calc(env(safe-area-inset-bottom) + var(--page-gap))
    calc(env(safe-area-inset-left) + var(--page-gap));
}

body.is-running #game {
  cursor: pointer;
}

#cardStage {
  min-height: 0;
  min-width: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  isolation: isolate;
  overflow: visible;
}

#card {
  display: block;
  position: relative;
  width: var(--card-target-width);
  height: var(--card-target-height);
  max-width: 100%;
  max-height: 100%;
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.55));
  transform-origin: center;
  transition: transform 170ms cubic-bezier(0.2, 0.85, 0.2, 1.1), filter 170ms ease-out;
  will-change: transform, filter;
  z-index: 1;
}

.card-face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.card-face.is-current {
  opacity: 1;
  visibility: visible;
}

#deadSkull {
  position: absolute;
  left: var(--dead-skull-left);
  top: var(--dead-skull-top);
  width: calc(var(--card-rendered-width) - (var(--dead-skull-inset) * 2));
  height: calc(var(--card-rendered-height) - (var(--dead-skull-inset) * 2));
  max-width: calc(100% - (var(--dead-skull-inset) * 2));
  max-height: calc(100% - (var(--dead-skull-inset) * 2));
  object-fit: contain;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.82) rotate(-1deg);
  transform-origin: center;
  transition: opacity 140ms ease-out, visibility 140ms ease-out, transform 170ms cubic-bezier(0.2, 0.85, 0.2, 1.15);
  filter: drop-shadow(0 20px 26px rgba(0, 0, 0, 0.72));
  z-index: 2;
}

body.dead #card {
  filter: grayscale(1) contrast(0.82) brightness(0.55) drop-shadow(0 12px 24px rgba(0, 0, 0, 0.55));
  transform: rotate(-2deg);
}

body.dead #deadSkull {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1) rotate(-1deg);
}

#overlayRoot {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(6px, 2.2vmin, 16px);
  pointer-events: none;
}

body.overlay-open #overlayRoot {
  display: flex;
}

.overlay-panel {
  width: min(100%, 440px);
  max-width: min(100%, var(--card-rendered-width));
  max-height: min(100%, calc(var(--app-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 16px));
  overflow: auto;
  overscroll-behavior: contain;
  pointer-events: auto;
  border: 1px solid var(--panel-border);
  border-radius: clamp(18px, 5vmin, 30px);
  padding: clamp(14px, 4vmin, 24px);
  background: linear-gradient(180deg, rgba(5, 41, 31, 0.94), var(--panel-bg));
  box-shadow: var(--panel-shadow);
  backdrop-filter: blur(15px);
  scrollbar-width: thin;
}

.overlay-panel[hidden] { display: none; }

.eyebrow {
  margin: 0 0 0.35rem;
  color: rgba(239, 255, 245, 0.72);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.overlay-panel h1,
.overlay-panel h2 {
  margin: 0;
  line-height: 1.05;
}

.overlay-panel h1 {
  font-size: clamp(1.55rem, 6.2vmin, 2.35rem);
  letter-spacing: -0.035em;
}

.overlay-panel h2 {
  margin-top: 0.95rem;
  font-size: clamp(1rem, 3.8vmin, 1.2rem);
}

#usernameForm {
  display: grid;
  gap: 0.58rem;
  margin-top: 1rem;
}

.field-label,
.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

#usernameInput {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 16px;
  padding: 0.75rem 0.95rem;
  outline: 0;
  background: rgba(255, 255, 255, 0.94);
  color: #031a14;
  font-size: 1.04rem;
  font-weight: 800;
}

#usernameInput:focus {
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.18);
}

#usernameInput.is-invalid {
  border-color: rgba(255, 107, 107, 0.95);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.14);
}

.form-help {
  min-height: 1.1em;
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.28;
}

.form-help.is-error { color: #ffc1c1; }

.primary-action {
  width: 100%;
  min-height: 50px;
  border: 0;
  border-radius: 999px;
  padding: 0.82rem 1rem;
  background: #f7f7f7;
  color: #031a14;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.32);
}

.primary-action:active:not(:disabled) { transform: scale(0.985); }

.rules ol {
  display: grid;
  gap: 0.38rem;
  margin: 0.65rem 0 0;
  padding-left: 1.25rem;
  color: rgba(248, 255, 249, 0.84);
  font-size: clamp(0.83rem, 3.25vmin, 0.95rem);
  line-height: 1.28;
}

.summary-panel {
  display: grid;
  gap: 0.76rem;
}

.run-card {
  display: grid;
  grid-template-columns: 0.72fr 1.12fr 0.72fr;
  gap: 0.45rem;
  margin-top: 0.18rem;
}

.run-card > div {
  min-width: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 0.62rem;
  background: rgba(255, 255, 255, 0.075);
}

.run-card strong {
  display: block;
  margin-top: 0.18rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: clamp(1rem, 4.2vmin, 1.32rem);
}

.leaderboard-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  padding: 0.25rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.24);
}

.scope-button {
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  padding: 0.54rem 0.72rem;
  background: transparent;
  color: rgba(248, 255, 249, 0.76);
  font-weight: 900;
}

.scope-button.is-active {
  background: #f7f7f7;
  color: #031a14;
}

.leaderboard-status {
  min-height: 1.2em;
  color: var(--muted);
  font-size: 0.84rem;
}

.leaderboard-table-wrap {
  max-height: min(34dvh, 330px);
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: clamp(0.82rem, 3.1vmin, 0.94rem);
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 0.57rem 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: rgba(3, 26, 20, 0.96);
  color: rgba(248, 255, 249, 0.72);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.leaderboard-table th:nth-child(1),
.leaderboard-table td:nth-child(1) { width: 22%; }
.leaderboard-table th:nth-child(3),
.leaderboard-table td:nth-child(3) { width: 24%; text-align: right; }

.leaderboard-table tr:last-child td { border-bottom: 0; }
.leaderboard-table tr.is-current td { background: rgba(255, 255, 255, 0.11); font-weight: 950; }

#toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 18px);
  z-index: 20;
  width: min(calc(100vw - 24px), 560px);
  transform: translate(-50%, calc(100% + 24px));
  opacity: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 0.82rem 1rem;
  background: rgba(3, 26, 20, 0.96);
  color: #f7f7f7;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.45);
  text-align: center;
  transition: transform 180ms ease, opacity 180ms ease;
}

#toast.is-visible {
  transform: translate(-50%, 0);
  opacity: 1;
}

@media (min-width: 900px) {
  .overlay-panel {
    width: min(100%, 430px);
    padding: clamp(12px, 3.1vmin, 22px);
  }
}

@media (max-width: 380px) {
  .overlay-panel { padding: 12px; }
  .run-card { grid-template-columns: 1fr; }
  .leaderboard-table th,
  .leaderboard-table td { padding: 0.5rem 0.45rem; }
}

@media (max-height: 520px) and (orientation: landscape) {
  .overlay-panel h1 { font-size: clamp(1.15rem, 5vmin, 1.55rem); }
  .rules ol { gap: 0.24rem; font-size: 0.78rem; }
  #usernameInput { min-height: 42px; }
  .primary-action { min-height: 42px; }
  .leaderboard-table-wrap { max-height: min(31dvh, 190px); }
}