@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0a0015;
  background-image:
    linear-gradient(180deg, #0a0015 0%, #1a0030 50%, #0d0020 100%);
  color: #e0d0f0;
  font-family: 'Orbitron', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 16px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 4px;
  background: linear-gradient(90deg, #ff2d95, #ff71ce, #01cdfe, #05ffa1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255, 45, 149, 0.5));
}

.controls {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.controls label {
  font-size: 0.7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #b080d0;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.toggle-label input[type="checkbox"] {
  width: 14px;
  height: 14px;
  cursor: pointer;
  accent-color: #b026ff;
}

.controls input[type="number"] {
  width: 60px;
  padding: 4px 8px;
  border: 1px solid #ff2d95;
  border-radius: 4px;
  background: rgba(255, 45, 149, 0.1);
  color: #ff71ce;
  font-family: 'Orbitron', monospace;
  font-size: 0.8rem;
}

.controls select {
  padding: 4px 8px;
  border: 1px solid #01cdfe;
  border-radius: 4px;
  background: rgba(1, 205, 254, 0.1);
  color: #01cdfe;
  font-family: 'Orbitron', monospace;
  font-size: 0.7rem;
}

.controls button {
  padding: 8px 20px;
  background: linear-gradient(135deg, #ff2d95, #b026ff);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: 'Orbitron', sans-serif;
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow: 0 0 15px rgba(255, 45, 149, 0.4), 0 0 30px rgba(176, 38, 255, 0.2);
  transition: box-shadow 0.2s, transform 0.1s;
}

.controls button:hover {
  box-shadow: 0 0 25px rgba(255, 45, 149, 0.7), 0 0 50px rgba(176, 38, 255, 0.4);
  transform: translateY(-1px);
}

.clocks {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 12px;
}

.clock {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 16px;
  border-radius: 6px;
  background: rgba(20, 0, 40, 0.8);
  border: 1px solid #4a2080;
  min-width: 100px;
}

.clock.active {
  border-color: #01cdfe;
  box-shadow: 0 0 10px rgba(1, 205, 254, 0.3);
}

.clock.flagged .clock-time {
  color: #ff2d95;
  text-shadow: 0 0 10px rgba(255, 45, 149, 0.8);
}

.clock-label {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #8060a0;
}

.clock-time {
  font-size: 1.3rem;
  font-family: 'Orbitron', monospace;
  font-weight: 700;
}

.white-clock .clock-time {
  color: #01cdfe;
  text-shadow: 0 0 8px rgba(1, 205, 254, 0.5);
}
.black-clock .clock-time {
  color: #ff71ce;
  text-shadow: 0 0 8px rgba(255, 113, 206, 0.5);
}

.clock.hidden {
  visibility: hidden;
}

.status-bar {
  font-size: 0.9rem;
  min-height: 1.4em;
  letter-spacing: 1px;
}

.status-bar .turn-white {
  color: #01cdfe;
  text-shadow: 0 0 10px rgba(1, 205, 254, 0.5);
}

.status-bar .turn-black {
  color: #ff71ce;
  text-shadow: 0 0 10px rgba(255, 113, 206, 0.5);
}

.status-bar .check {
  color: #ff2d95;
  font-weight: bold;
  text-shadow: 0 0 15px rgba(255, 45, 149, 0.8);
}

.status-bar .game-over {
  color: #05ffa1;
  font-weight: bold;
  text-shadow: 0 0 20px rgba(5, 255, 161, 0.6);
}

#board-canvas {
  border: 2px solid #b026ff;
  box-shadow: 0 0 30px rgba(176, 38, 255, 0.3), 0 0 60px rgba(255, 45, 149, 0.15), inset 0 0 30px rgba(176, 38, 255, 0.1);
  cursor: pointer;
}

.action-buttons {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.action-btn {
  padding: 6px 18px;
  background: none;
  color: #01cdfe;
  border: 1px solid #01cdfe;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: 'Orbitron', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
}

.action-btn:hover {
  background: rgba(1, 205, 254, 0.15);
  box-shadow: 0 0 15px rgba(1, 205, 254, 0.3);
}

.help-btn {
  padding: 6px 18px;
  background: none;
  color: #05ffa1;
  border: 1px solid #05ffa1;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: 'Orbitron', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
}

.help-btn:hover {
  background: rgba(5, 255, 161, 0.15);
  box-shadow: 0 0 15px rgba(5, 255, 161, 0.3);
}

.help-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  width: 100%;
  max-width: 640px;
}

.help-panel.open {
  max-height: 2000px;
}

.help-content {
  margin-top: 12px;
  padding: 20px 24px;
  background: rgba(20, 0, 50, 0.9);
  border: 1px solid #4a2080;
  border-radius: 8px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: #c0b0d8;
  font-family: -apple-system, sans-serif;
}

.help-content h2 {
  font-family: 'Orbitron', sans-serif;
  color: #ff71ce;
  font-size: 1.1rem;
  margin-bottom: 14px;
  text-shadow: 0 0 15px rgba(255, 113, 206, 0.4);
}

.help-content h3 {
  font-family: 'Orbitron', sans-serif;
  color: #01cdfe;
  font-size: 0.85rem;
  margin-top: 16px;
  margin-bottom: 6px;
  text-shadow: 0 0 10px rgba(1, 205, 254, 0.3);
}

.help-content p { margin-bottom: 8px; }
.help-content ul, .help-content ol { padding-left: 20px; margin-bottom: 8px; }
.help-content li { margin-bottom: 4px; }
.help-content strong { color: #e0d0f0; }
.help-content em { color: #ff71ce; }

.info {
  margin-top: 16px;
  font-size: 0.7rem;
  color: #6050a0;
  text-align: center;
  max-width: 640px;
  line-height: 1.5;
  font-family: -apple-system, sans-serif;
}