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

body {
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  touch-action: none;
}

#container {
  width: 100vw;
  height: 100vh;
}

#container canvas {
  display: block;
}

/* Score Display */
.score-display {
  position: fixed;
  top: 20px;
  right: 20px;
  background: linear-gradient(
    135deg,
    var(--score-display-background-start, rgba(255, 255, 255, 0.95)),
    var(--score-display-background-end, rgba(240, 240, 255, 0.95))
  );
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 15px 25px;
  box-shadow: 0 8px 32px var(--shadow-color, rgba(0, 0, 0, 0.1));
  z-index: 100;
  display: none; /* Hidden by default, shown when game starts */
  flex-direction: column;
  align-items: center;
  gap: 5px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--score-display-border, rgba(255, 255, 255, 0.3));
}

.score-display:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px var(--shadow-color, rgba(0, 0, 0, 0.15));
}

.score-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--score-label-color, #666);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.score-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--score-value-color, #2c3e50);
  line-height: 1;
}

/* Screen Overlays */
.screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--screen-background-gradient-start, #667eea) 0%,
    var(--screen-background-gradient-end, #764ba2) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  backdrop-filter: blur(5px);
}

.screen.active {
  opacity: 1;
  visibility: visible;
}

.screen-content {
  background: var(--screen-content-background, rgba(255, 255, 255, 0.95));
  backdrop-filter: blur(20px);
  border-radius: 30px;
  padding: 50px 40px;
  max-width: 600px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px var(--shadow-color, rgba(0, 0, 0, 0.3));
  animation: slideUp 0.5s ease-out;
  border: 1px solid var(--screen-content-border, rgba(255, 255, 255, 0.5));
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.screen-title {
  font-size: 48px;
  font-weight: 800;
  color: var(--screen-title-color, #2c3e50);
  margin-bottom: 15px;
  background: linear-gradient(
    135deg,
    var(--screen-background-gradient-start, #667eea) 0%,
    var(--screen-background-gradient-end, #764ba2) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.screen-subtitle {
  font-size: 18px;
  color: var(--screen-subtitle-color, #7f8c8d);
  margin-bottom: 40px;
  font-weight: 500;
}

.screen-message {
  font-size: 18px;
  color: var(--screen-message-color, #555);
  line-height: 1.6;
  margin-bottom: 30px;
  font-weight: 400;
}

.result-icon {
  font-size: 80px;
  margin-bottom: 20px;
  animation: bounce 0.6s ease-out;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Pattern Selection */
.pattern-selection {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 30px;
}

/* Improve touch targets on mobile */
@media (hover: none) and (pointer: coarse) {
  .pattern-btn {
    min-height: 80px;
  }

  .action-btn {
    min-height: 48px;
  }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .screen-content {
    padding: 20px 15px;
    max-height: 90vh;
    overflow-y: auto;
  }

  .screen-title {
    font-size: 28px;
    margin-bottom: 8px;
  }

  .screen-subtitle {
    font-size: 12px;
    margin-bottom: 15px;
  }

  .screen-message {
    font-size: 13px;
    margin-bottom: 15px;
  }

  .pattern-selection {
    gap: 8px;
    margin-top: 15px;
  }

  .pattern-btn {
    min-width: calc(25% - 6px);
    max-width: calc(25% - 6px);
    padding: 10px 8px;
  }

  .pattern-icon {
    font-size: 20px;
  }

  .pattern-name {
    font-size: 10px;
  }

  .score-section {
    margin: 15px 0;
    padding: 12px;
  }

  .final-score {
    font-size: 32px;
  }

  .button-group {
    flex-direction: row;
    gap: 10px;
    margin-top: 15px;
  }

  .action-btn {
    flex: 1;
    min-width: 0;
  }

  .result-icon {
    font-size: 40px;
    margin-bottom: 10px;
  }
}

.pattern-btn {
  background: var(
    --pattern-button-background,
    linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%)
  );
  border: 2px solid var(--pattern-button-border, rgba(102, 126, 234, 0.2));
  border-radius: 15px;
  padding: 15px 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  box-shadow: 0 4px 15px var(--pattern-button-shadow, rgba(0, 0, 0, 0.1));
}

.pattern-btn:hover {
  transform: translateY(-5px) scale(1.02);
  border-color: var(--pattern-button-border-hover, rgba(102, 126, 234, 0.5));
  box-shadow: 0 8px 25px
    var(--pattern-button-shadow-hover, rgba(102, 126, 234, 0.3));
  background: var(
    --pattern-button-background-hover,
    linear-gradient(135deg, #ffffff 0%, #f0f4ff 100%)
  );
}

.pattern-btn:active {
  transform: translateY(-2px) scale(0.98);
}

.pattern-icon {
  font-size: 32px;
  margin-bottom: 2px;
  transition: transform 0.3s ease;
}

.pattern-btn:hover .pattern-icon {
  transform: scale(1.1) rotate(5deg);
}

.pattern-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--pattern-name-color, #2c3e50);
  margin-top: 2px;
}

.pattern-desc {
  font-size: 11px;
  color: var(--pattern-desc-color, #7f8c8d);
  font-weight: 400;
}

/* Score Section */
.score-section {
  margin: 30px 0;
  padding: 25px;
  background: linear-gradient(
    135deg,
    var(--score-section-background-start, rgba(102, 126, 234, 0.1)),
    var(--score-section-background-end, rgba(118, 75, 162, 0.1))
  );
  border-radius: 15px;
  border: 2px solid var(--score-section-border, rgba(102, 126, 234, 0.2));
}

.score-section .score-label {
  font-size: 14px;
  color: var(--score-section-label-color, #7f8c8d);
  margin-bottom: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.final-score {
  font-size: 56px;
  font-weight: 800;
  background: var(
    --final-score-color,
    linear-gradient(135deg, #667eea 0%, #764ba2 100%)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* Button Group */
.button-group {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 30px;
}

.action-btn {
  padding: 15px 35px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  min-width: 150px;
  box-shadow: 0 4px 15px var(--button-shadow, rgba(0, 0, 0, 0.2));
  position: relative;
  overflow: hidden;
}

.action-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.action-btn:hover::before {
  width: 300px;
  height: 300px;
}

.action-btn.primary {
  background: linear-gradient(
    135deg,
    var(--button-primary-background, #667eea) 0%,
    var(--button-primary-background-end, #764ba2) 100%
  );
  color: white;
}

.action-btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px
    var(--button-primary-hover-shadow, rgba(102, 126, 234, 0.4));
}

.action-btn.primary:active {
  transform: translateY(-1px);
}

.action-btn.secondary {
  background: var(
    --button-secondary-background,
    linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%)
  );
  color: var(--button-secondary-text, #667eea);
  border: 2px solid var(--button-secondary-border, #667eea);
}

.action-btn.secondary:hover {
  background: var(
    --button-secondary-background-hover,
    linear-gradient(135deg, #667eea 0%, #764ba2 100%)
  );
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px
    var(--button-primary-hover-shadow, rgba(102, 126, 234, 0.3));
}

.action-btn.secondary:active {
  transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .screen-content {
    padding: 30px 20px;
    width: 95%;
    max-width: 100%;
    border-radius: 20px;
  }

  .screen-title {
    font-size: 32px;
    margin-bottom: 10px;
    line-height: 1.2;
  }

  .screen-subtitle {
    font-size: 14px;
    margin-bottom: 25px;
  }

  .screen-message {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 20px;
  }

  .pattern-selection {
    flex-direction: row;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
  }

  .pattern-btn {
    min-width: calc(50% - 5px);
    max-width: calc(50% - 5px);
    padding: 12px 10px;
    border-radius: 12px;
  }

  .pattern-icon {
    font-size: 24px;
    margin-bottom: 0;
  }

  .pattern-name {
    font-size: 11px;
    margin-top: 0;
  }

  .pattern-desc {
    font-size: 9px;
    display: none; /* Hide description on mobile to save space */
  }

  .score-section {
    margin: 20px 0;
    padding: 15px;
    border-radius: 12px;
  }

  .score-section .score-label {
    font-size: 11px;
    margin-bottom: 5px;
  }

  .final-score {
    font-size: 36px;
    line-height: 1;
  }

  .button-group {
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
  }

  .action-btn {
    width: 100%;
    min-width: auto;
    padding: 14px 25px;
    font-size: 14px;
    border-radius: 10px;
  }

  .score-display {
    top: 10px;
    right: 10px;
    padding: 10px 16px;
    border-radius: 15px;
  }

  .score-label {
    font-size: 10px;
  }

  .score-value {
    font-size: 24px;
  }

  .result-icon {
    font-size: 50px;
    margin-bottom: 15px;
  }
}

@media (max-width: 480px) {
  .screen-content {
    padding: 25px 15px;
    width: 98%;
    border-radius: 15px;
  }

  .screen-title {
    font-size: 26px;
    margin-bottom: 8px;
    line-height: 1.2;
  }

  .screen-subtitle {
    font-size: 12px;
    margin-bottom: 20px;
  }

  .screen-message {
    font-size: 13px;
    line-height: 1.4;
    margin-bottom: 18px;
  }

  .pattern-selection {
    gap: 8px;
    margin-top: 15px;
  }

  .pattern-btn {
    min-width: calc(50% - 4px);
    max-width: calc(50% - 4px);
    padding: 10px 8px;
    border-radius: 10px;
    gap: 3px;
  }

  .pattern-icon {
    font-size: 20px;
  }

  .pattern-name {
    font-size: 10px;
  }

  .pattern-desc {
    display: none;
  }

  .score-section {
    margin: 15px 0;
    padding: 12px;
    border-radius: 10px;
  }

  .score-section .score-label {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .final-score {
    font-size: 32px;
  }

  .button-group {
    gap: 10px;
    margin-top: 18px;
  }

  .action-btn {
    padding: 12px 20px;
    font-size: 13px;
    border-radius: 8px;
    min-height: 44px; /* Better touch target */
  }

  .score-display {
    top: 8px;
    right: 8px;
    padding: 8px 12px;
    border-radius: 12px;
  }

  .score-label {
    font-size: 9px;
  }

  .score-value {
    font-size: 20px;
  }

  .result-icon {
    font-size: 45px;
    margin-bottom: 12px;
  }
}

/* Extra small devices */
@media (max-width: 360px) {
  .screen-content {
    padding: 20px 12px;
  }

  .screen-title {
    font-size: 22px;
  }

  .screen-subtitle {
    font-size: 11px;
    margin-bottom: 15px;
  }

  .screen-message {
    font-size: 12px;
  }

  .pattern-btn {
    min-width: calc(50% - 3px);
    max-width: calc(50% - 3px);
    padding: 8px 6px;
  }

  .pattern-icon {
    font-size: 18px;
  }

  .pattern-name {
    font-size: 9px;
  }

  .final-score {
    font-size: 28px;
  }

  .action-btn {
    padding: 11px 18px;
    font-size: 12px;
  }

  .result-icon {
    font-size: 40px;
  }
}

/* Score display is hidden by default, shown via JavaScript when game starts */

/* Loading Screen */
.loading-spinner {
  width: 60px;
  height: 60px;
  border: 5px solid rgba(102, 126, 234, 0.2);
  border-top-color: var(--button-primary-background, #667eea);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 30px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

#loading-screen .screen-content {
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#loading-screen .screen-title {
  margin-bottom: 10px;
}

#loading-screen .screen-subtitle {
  margin-bottom: 0;
}