:root {
  --panel-bg: rgba(20, 24, 29, 0.92);
  --panel-border: rgba(255, 255, 255, 0.2);
  --text: #f0f3f7;
  --muted: #b8c2ce;
  --primary: #ff5a36;
  --primary-hover: #ff724f;
  --secondary: #2d3745;
  --secondary-hover: #3a4658;
  --card-scale: 1.12;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: transparent;
}

.layout {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: stretch;
}

.overlay-stage {
  flex: 1;
  display: flex;
  align-items: flex-end;
  padding: 0 1.1rem 1.1rem;
  position: relative;
}

.cards-strip {
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.cards-group {
  display: flex;
  align-items: flex-end;
  gap: clamp(0.45rem, 1.3vw, 0.85rem);
}

.pocket-group {
  justify-content: flex-start;
}

.board-group {
  justify-content: flex-end;
  gap: clamp(0.35rem, 1.1vw, 0.65rem);
}

.board-group #slot-turn {
  margin-left: clamp(0.75rem, 1.8vw, 1.35rem);
}

.board-group #slot-river {
  margin-left: clamp(0.25rem, 0.9vw, 0.6rem);
}

.card {
  width: calc(clamp(48px, 6.2vw, 96px) * var(--card-scale));
  aspect-ratio: 2.5 / 3.5;
  object-fit: contain;
  border-radius: 0;
  transition: transform 160ms ease;
}

.card.revealed {
  transform: translateY(-2px);
}

.control-panel {
  width: min(420px, 100%);
  border-left: 1px solid var(--panel-border);
  background: var(--panel-bg);
  backdrop-filter: blur(7px);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.panel-header h1 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.2;
}

.hint,
.stage-label,
.shortcuts {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

.size-control {
  display: grid;
  gap: 0.42rem;
}

.size-control label {
  font-size: 0.9rem;
  color: #e4ebf3;
}

.size-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.65rem;
}

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

.size-input-row output {
  min-width: 48px;
  text-align: right;
  color: var(--muted);
  font-size: 0.9rem;
}

.reveal-controls,
.bottom-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}

.selector-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  overflow: auto;
  padding-right: 0.25rem;
}

.selector-row {
  display: grid;
  grid-template-columns: minmax(100px, 130px) 1fr;
  align-items: center;
  gap: 0.65rem;
}

.selector-row label {
  font-size: 0.9rem;
  color: #e4ebf3;
}

.selector-row select {
  width: 100%;
  padding: 0.45rem 0.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.selector-row option {
  color: #111;
}

button {
  border: none;
  border-radius: 9px;
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text);
}

.primary-button {
  background: var(--primary);
}

.primary-button:hover {
  background: var(--primary-hover);
}

.secondary-button,
.ghost-button,
.show-panel-fab {
  background: var(--secondary);
}

.secondary-button:hover,
.ghost-button:hover,
.show-panel-fab:hover {
  background: var(--secondary-hover);
}

.show-panel-fab {
  position: fixed;
  right: 1rem;
  top: 1rem;
  z-index: 20;
  display: none;
}

kbd {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 0.08rem 0.32rem;
  font-size: 0.8rem;
}

.panel-hidden .control-panel {
  display: none;
}

.panel-hidden .show-panel-fab {
  display: inline-flex;
}

.obs-overlay .show-panel-fab {
  display: none !important;
}

@media (max-width: 980px) {
  .layout {
    flex-direction: column;
  }

  .overlay-stage {
    min-height: 40vh;
  }

  .cards-strip {
    align-items: flex-end;
  }

  .control-panel {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--panel-border);
    max-height: 48vh;
  }

  .show-panel-fab {
    top: auto;
    bottom: 1rem;
  }
}