:root {
  --bg: #0b0f0c;
  --panel: #0f1511;
  --neon: #39ff9d;
  --neon-soft: #92ffd1;
  --text: #e7ffee;
  --muted: #8ab59c;
  --accent: #ffe66d;
  --shadow: rgba(57, 255, 157, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Lucida Console", "Courier New", monospace;
  background: radial-gradient(circle at top, #172018, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(57, 255, 157, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(57, 255, 157, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  opacity: 0.45;
  z-index: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: rgba(11, 15, 12, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(57, 255, 157, 0.2);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--neon);
  color: var(--neon);
  font-weight: bold;
  text-shadow: 0 0 10px var(--shadow);
}

.brand-text .title {
  font-size: 18px;
  letter-spacing: 1px;
}

.brand-text .subtitle {
  font-size: 11px;
  color: var(--muted);
}

.burger {
  background: none;
  border: 1px solid var(--neon);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--neon);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
  color: var(--neon);
  border-color: var(--neon);
}

.nav-split {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  color: var(--text);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
  min-width: 140px;
  justify-content: center;
}

.nav-split:hover,
.nav-split:focus-within {
  color: var(--neon);
  border-color: var(--neon);
}

.nav-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.nav-options {
  display: none;
  align-items: center;
  width: 100%;
}

.nav-split:hover .nav-label,
.nav-split:focus-within .nav-label {
  display: none;
}

.nav-split:hover .nav-options,
.nav-split:focus-within .nav-options {
  display: inline-flex;
}

.nav-sep {
  color: var(--muted);
  flex: 0 0 auto;
}

.nav-options a {
  color: inherit;
  padding-bottom: 0;
  flex: 1 1 0;
  text-align: center;
}

.site-nav .nav-options a[href="/games/chess/p2"] {
  color: var(--accent);
  text-shadow: 0 0 10px rgba(255, 230, 109, 0.35);
}

.content {
  position: relative;
  z-index: 1;
  padding: 40px 24px 60px;
  flex: 1;
}

.view {
  display: none;
  animation: fadeIn 0.45s ease;
}

.view.active {
  display: block;
}

#chessView[data-player="2"],
#chessView.is-seat-2 {
  --neon: var(--accent);
  --neon-soft: #fff2a6;
  --shadow: rgba(255, 230, 109, 0.25);
  --p1-neon: #39ff9d;
}

#chessView[data-player="2"] .chess-actions .btn:not(.ghost) {
  border-color: var(--p1-neon);
  color: var(--p1-neon);
  box-shadow: 0 0 14px rgba(57, 255, 157, 0.15);
}

#chessView[data-player="2"] .chess-actions .btn:not(.ghost):hover {
  box-shadow: 0 0 18px rgba(57, 255, 157, 0.35);
}

#chessView.is-seat-2 #roleLine {
  color: var(--accent);
  text-shadow: 0 0 10px rgba(255, 230, 109, 0.35);
}


h1, h2 {
  margin: 0 0 12px;
}

.lead {
  color: var(--muted);
  margin: 0 0 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(57, 255, 157, 0.3);
  padding: 20px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.card.muted {
  border-style: dashed;
  color: var(--muted);
}

.card-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid var(--neon);
  color: var(--neon);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1px;
  background: transparent;
  box-shadow: 0 0 14px rgba(57, 255, 157, 0.15);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(57, 255, 157, 0.35);
}

.btn.ghost {
  border-color: rgba(255, 230, 109, 0.7);
  color: var(--accent);
}

.chess-header {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.chess-actions.is-hidden {
  display: none;
}

.console {
  border: 2px solid var(--neon);
  padding: 16px;
  background: #050906;
  box-shadow: inset 0 0 30px rgba(57, 255, 157, 0.2);
}

.chess-stage {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) 260px;
  gap: 20px;
  align-items: stretch;
}

.tetris-header {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.tetris-stage {
  display: grid;
  grid-template-columns: minmax(320px, 1fr);
  gap: 20px;
}

.tetris-layout {
  display: grid;
  grid-template-columns: auto 220px;
  gap: 20px;
  align-items: start;
}

.tetris-board {
  --cell-size: clamp(14px, 2.4vw, 22px);
  display: grid;
  grid-template-columns: repeat(10, var(--cell-size));
  grid-template-rows: repeat(20, var(--cell-size));
  gap: 2px;
  background: rgba(3, 6, 4, 0.7);
  padding: 8px;
  border: 2px solid rgba(57, 255, 157, 0.4);
  box-shadow: inset 0 0 18px rgba(57, 255, 157, 0.15);
  justify-self: center;
}

.tetris-next {
  --cell-size: clamp(12px, 2vw, 18px);
  display: grid;
  grid-template-columns: repeat(4, var(--cell-size));
  grid-template-rows: repeat(4, var(--cell-size));
  gap: 2px;
  background: rgba(3, 6, 4, 0.6);
  padding: 6px;
  border: 1px solid rgba(57, 255, 157, 0.35);
}

.tetris-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: rgba(7, 11, 8, 0.9);
  border: 1px solid rgba(57, 255, 157, 0.12);
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.4);
}

.tetris-cell.filled {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.25), 0 0 10px rgba(57, 255, 157, 0.15);
}

.tetris-cell.piece-I { background: #45e4ff; }
.tetris-cell.piece-O { background: #ffe66d; }
.tetris-cell.piece-T { background: #c77dff; }
.tetris-cell.piece-S { background: #6df6a9; }
.tetris-cell.piece-Z { background: #ff6d6d; }
.tetris-cell.piece-J { background: #6d8bff; }
.tetris-cell.piece-L { background: #ffb86d; }

.tetris-side {
  display: grid;
  gap: 16px;
}

.tetris-panel {
  border: 1px solid rgba(255, 230, 109, 0.5);
  padding: 12px;
  background: rgba(7, 10, 7, 0.8);
}

.tetris-panel-title {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.tetris-controls-info {
  font-size: 12px;
  color: var(--text);
  display: grid;
  gap: 6px;
}

.tetris-mobile-controls {
  display: none;
  gap: 6px;
  margin-top: 16px;
  align-items: center;
  justify-content: space-between;
  --tetris-button-height: clamp(32px, 7.5vw, 44px);
  --tetris-button-gap: 10px;
}

.tetris-btn {
  justify-content: center;
}

.tetris-btn.drop {
  border-color: rgba(255, 230, 109, 0.9);
  color: var(--accent);
  width: clamp(110px, 32vw, 190px);
  height: calc((var(--tetris-button-height) * 2 + var(--tetris-button-gap)) * 0.66);
  font-size: 14px;
}

.tetris-control-stack {
  display: grid;
  gap: var(--tetris-button-gap);
  width: clamp(90px, 22vw, 130px);
  grid-auto-rows: var(--tetris-button-height);
}

.tetris-control-stack .tetris-btn {
  width: 100%;
}

.gamelog {
  border: 2px solid rgba(255, 230, 109, 0.6);
  background: #070a07;
  padding: 14px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.gamelog-title {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.gamelog-list {
  flex: 1;
  overflow-y: auto;
  font-size: 12px;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 4px;
}

.gamelog-item {
  padding: 6px 8px;
  border: 1px dashed rgba(57, 255, 157, 0.25);
  background: rgba(3, 6, 4, 0.6);
}

.console-bar {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 10px;
}

.console-input {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed rgba(57, 255, 157, 0.25);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.console-label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 1px;
}

.console-form {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.console-form.is-disabled {
  opacity: 0.45;
  filter: grayscale(0.2);
  pointer-events: none;
}

.console-form.is-disabled::after {
  content: attr(data-status);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.console-field {
  background: #030604;
  border: 1px solid rgba(57, 255, 157, 0.5);
  color: var(--neon);
  padding: 6px 8px;
  font-family: inherit;
  font-size: 12px;
  width: 70px;
  text-transform: lowercase;
  box-shadow: inset 0 0 10px rgba(57, 255, 157, 0.2);
}

.console-field::placeholder {
  color: rgba(57, 255, 157, 0.45);
}

.console-field:focus {
  outline: none;
  border-color: var(--accent);
}

.console-sep {
  font-size: 12px;
  color: var(--muted);
}

.console-btn {
  background: transparent;
  color: var(--neon);
  border: 1px solid var(--neon);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 1px;
  padding: 6px 10px;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(57, 255, 157, 0.2);
}

.console-btn:hover {
  box-shadow: 0 0 16px rgba(57, 255, 157, 0.35);
}

.console-btn.is-shake {
  animation: shakeX 0.32s ease;
}

.board {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  color: var(--neon);
  text-shadow: 0 0 8px rgba(57, 255, 157, 0.4);
  font-family: "Cascadia Mono", "Consolas", "DejaVu Sans Mono", "Courier New", monospace;
}

.board .piece {
  display: inline-block;
  width: 1ch;
  text-align: center;
  transform: translateX(-0.38ch);
  font-weight: 700;
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: 20px 24px 30px;
  border-top: 1px solid rgba(57, 255, 157, 0.2);
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  text-align: center;
}

.footer-sep {
  color: rgba(138, 181, 156, 0.6);
}

.footer-link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 157, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-link:hover {
  color: var(--text);
  border-color: var(--text);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 6, 4, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 5;
}

.modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  border: 2px solid var(--accent);
  background: #070a07;
  padding: 24px;
  max-width: 320px;
  text-align: center;
  box-shadow: 0 0 24px rgba(255, 230, 109, 0.2);
}

.modal-title {
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.modal-body {
  color: var(--text);
  margin-bottom: 18px;
  font-size: 13px;
}

@media (max-width: 820px) {
  .burger {
    display: flex;
  }

  .site-nav {
    position: absolute;
    right: 24px;
    top: 70px;
    flex-direction: column;
    background: rgba(5, 9, 6, 0.95);
    padding: 12px 16px;
    border: 1px solid rgba(57, 255, 157, 0.4);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .chess-stage {
    grid-template-columns: 1fr;
  }

  .tetris-layout {
    grid-template-columns: 1fr;
  }

  .tetris-side {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .tetris-mobile-controls {
    display: flex;
  }

}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shakeX {
  0%, 100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-4px);
  }
  40% {
    transform: translateX(4px);
  }
  60% {
    transform: translateX(-3px);
  }
  80% {
    transform: translateX(3px);
  }
}