:root {
  --bg-color: #1a0b2e;
  --panel-color: #2d1b4e;
  --accent-gold: #ffd700;
  --accent-glow: #ffea00;
  --accent-red: #ff4757;
  --text-color: #ffffff;
  --ball-dim: #432c7a;
  --success-green: #2ecc71;
}

body {
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at 50% 0%, #4f2d7f 0%, var(--bg-color) 70%);
  color: var(--text-color);
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  user-select: none;
  overflow-x: hidden;
}

/* --- Header --- */
header {
  text-align: center;
  margin-bottom: 20px;
}
h1 {
  font-weight: 900;
  text-transform: uppercase;
  margin: 0;
  text-shadow: 0 0 15px rgba(255, 215, 0, 0.6);
  color: var(--accent-gold);
  font-size: 2.5rem;
}
.subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
  margin-top: 5px;
}

/* --- Game Mode Selector --- */
.game-mode-selector {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 15px;
}

.mode-btn {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: 8px 16px;
  font-size: 0.9rem;
  min-width: 80px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.mode-btn.active {
  background: var(--accent-gold);
  color: var(--bg-color);
  box-shadow: 0 0 10px var(--accent-gold);
}

/* --- Controls --- */
.controls-area {
  background: rgba(0, 0, 0, 0.3);
  padding: 15px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
  width: 100%;
  max-width: 500px;
  z-index: 10;
}

.main-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

button {
  padding: 12px 24px;
  font-size: 1rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: bold;
  text-transform: uppercase;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 8px;
  transition:
    transform 0.1s,
    box-shadow 0.1s;
}

button:active {
  transform: scale(0.95);
}

#draw-btn {
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  color: #1a0b2e;
  min-width: 140px;
}
#draw-btn:disabled {
  background: #555;
  cursor: not-allowed;
  opacity: 0.7;
}

#reset-btn {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.8);
}
#reset-btn:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* Auto Play Styles */
.auto-controls {
  display: flex;
  align-items: center;
  gap: 15px;
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 20px;
  border-radius: 30px;
  width: 100%;
  justify-content: space-between;
  box-sizing: border-box;
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.switch-input {
  display: none;
}
.switch-label {
  width: 50px;
  height: 26px;
  background: #555;
  border-radius: 50px;
  position: relative;
  transition: 0.3s;
}
.switch-label::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}
.switch-input:checked + .switch-label {
  background: var(--success-green);
}
.switch-input:checked + .switch-label::after {
  left: 27px;
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #ccc;
  flex-grow: 1;
  justify-content: flex-end;
}
input[type="range"] {
  accent-color: var(--accent-gold);
  cursor: pointer;
}

/* --- 3D STAGE & FLIPPER --- */
.stage-container {
  margin: 10px 0 30px 0;
  text-align: center;
  perspective: 1000px; /* Essential for 3D effect */
  position: relative;
  z-index: 5;
}

.mc-text {
  min-height: 3rem; /* Height for ~2 lines of text */
  margin-bottom: 20px;
  color: var(--accent-glow);
  font-style: italic;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.5s;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.2;
}
.mc-text.visible {
  opacity: 1;
}

/* The container for the spinning ball */
.ball-container {
  width: 180px;
  height: 180px;
  margin: 0 auto;
  position: relative;
}

/* The flipper div holds Front and Back */
.flipper {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

/* Common styles for both faces */
.flipper-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /* Hides the back of the element when rotated */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset -10px -10px 20px rgba(0, 0, 0, 0.3),
    0 0 50px rgba(255, 215, 0, 0.2),
    0 20px 40px rgba(0, 0, 0, 0.5);
  border: 5px solid var(--accent-gold);
  background: radial-gradient(circle at 30% 30%, #ffffff, #e0e0e0, #a0a0a0);
}

/* Front Face (The Number) */
.front {
  transform: rotateY(0deg); /* Starts facing front */
  font-size: 5.5rem;
  font-weight: 800;
  color: #1a0b2e;
}

/* Back Face (The Question Mark) */
.back {
  transform: rotateY(180deg); /* Starts facing back */
  font-size: 5.5rem;
  color: #fff;
  background: radial-gradient(circle at 30% 30%, #ff4757, #c0392b);
  border-color: #fff;
}

/* Classes to control the flip state */
.flipper.flipped {
  transform: rotateY(180deg);
}

.shuffling {
  animation: shake 0.1s infinite;
}

@keyframes shake {
  0% {
    transform: translate(1px, 1px) rotate(0deg);
  }
  25% {
    transform: translate(-2px, 0px) rotate(1deg);
  }
  50% {
    transform: translate(-1px, 2px) rotate(-1deg);
  }
  75% {
    transform: translate(2px, 1px) rotate(0deg);
  }
  100% {
    transform: translate(0px, -2px) rotate(-1deg);
  }
}

/* --- Grid --- */
.grid-wrapper {
  background: var(--panel-color);
  padding: 15px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.lotto-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
  max-width: 800px;
}
.grid-ball {
  width: 38px;
  height: 38px;
  background-color: var(--ball-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.3);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.5);
  transition: all 0.5s ease;
}
.grid-ball.active {
  background: radial-gradient(circle at 30% 30%, #ffd700, #ffaa00);
  color: #1a0b2e;
  font-weight: bold;
  transform: scale(1.1);
  box-shadow: 0 0 15px var(--accent-gold);
  animation: glowPulse 2s infinite;
}
@keyframes glowPulse {
  0% {
    box-shadow: 0 0 5px var(--accent-gold);
  }
  50% {
    box-shadow: 0 0 20px var(--accent-glow);
  }
  100% {
    box-shadow: 0 0 5px var(--accent-gold);
  }
}

.status-bar {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 800px;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .lotto-grid {
    gap: 3px;
  }
  .grid-ball {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }
  .ball-container {
    width: 140px;
    height: 140px;
  }
  .front,
  .back {
    font-size: 4rem;
  }
  .auto-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .slider-container {
    width: 100%;
  }
}