drag-puzzle-captcha/DragPuzzleCaptcha.css

A beautiful, modern drag-and-drop puzzle CAPTCHA component for React applications

/* Modal overlay */
.drag-puzzle-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  padding: 1rem;
  box-sizing: border-box;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0px);
  }
  to {
    opacity: 1;
    backdrop-filter: blur(8px);
  }
}

/* Modal container */
.drag-puzzle-modal {
  background: linear-gradient(145deg, #ffffff, #f8f9fa);
  border-radius: clamp(16px, 4vw, 20px);
  box-shadow: 
    0 25px 80px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  width: 100%;
  max-width: min(90vw, 450px);
  max-height: 90vh;
  overflow: hidden;
  animation: slideIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin: auto;
}

@keyframes slideIn {
  from {
    transform: scale(0.8) translateY(-40px) rotateX(15deg);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0) rotateX(0deg);
    opacity: 1;
  }
}

/* Modal header */
.drag-puzzle-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: clamp(1.5em, 3vw, 2.5em) clamp(1.5em, 4vw, 2.5em) clamp(0.75em, 2vw, 1em);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  position: relative;
  overflow: hidden;
}

.drag-puzzle-modal-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.drag-puzzle-modal-header h3 {
  margin: 0;
  font-size: clamp(1.1em, 3vw, 1.4em);
  color: white;
  font-weight: 700;
  font-family: var(--font-family-secondary, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  z-index: 1;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5em;
  line-height: 1.2;
}

.drag-puzzle-modal-header h3::before {
  content: '🛡️';
  font-size: 1.2em;
}

.drag-puzzle-close-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: clamp(1.2em, 3vw, 1.5em);
  color: white;
  cursor: pointer;
  padding: 0;
  width: clamp(40px, 8vw, 45px);
  height: clamp(40px, 8vw, 45px);
  min-width: 44px; /* Touch target minimum */
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  backdrop-filter: blur(10px);
  z-index: 1;
  position: relative;
  touch-action: manipulation;
}

.drag-puzzle-close-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
  transform: scale(1.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.drag-puzzle-close-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.drag-puzzle-container {
  width: auto;
  margin: 0;
  padding: clamp(1.5em, 4vw, 2.5em);
  background: linear-gradient(145deg, #f8f9fa, #ffffff);
  font-family: var(--font-family-secondary, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif);
  position: relative;
  box-sizing: border-box;
}

.drag-puzzle-title {
  text-align: center;
  margin-bottom: 1.5em;
  font-size: 16px;
  color: #495057;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.5px;
}

.drag-puzzle-loading {
  text-align: center;
  padding: 3em 2em;
  color: #6c757d;
  font-size: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1em;
}

.drag-puzzle-loading::before {
  content: '';
  width: 40px;
  height: 40px;
  border: 4px solid #e9ecef;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.drag-puzzle-game {
  position: relative;
  width: 100%;
  user-select: none;
}

.drag-puzzle-background {
  width: min(340px, calc(100vw - 4rem));
  height: min(180px, calc((100vw - 4rem) * 0.529));
  max-width: 100%;
  border-radius: clamp(8px, 2vw, 12px);
  margin: 0 auto clamp(1em, 3vw, 1.5em);
  background-size: cover;
  background-position: center;
  border: clamp(2px, 0.5vw, 3px) solid #e9ecef;
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
}

.drag-puzzle-background:hover {
  box-shadow: 
    0 12px 35px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.drag-puzzle-hole {
  position: absolute;
  width: min(70px, calc((100vw - 4rem) * 0.206));
  height: min(70px, calc((100vw - 4rem) * 0.206));
  background: 
    radial-gradient(circle at center, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 70%, transparent 100%),
    linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  border: clamp(2px, 0.5vw, 3px) dashed #adb5bd;
  border-radius: clamp(6px, 1.5vw, 8px);
  box-shadow: 
    inset 0 0 20px rgba(0, 0, 0, 0.4),
    inset 0 4px 8px rgba(0, 0, 0, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { 
    border-color: #adb5bd;
    box-shadow: 
      inset 0 0 20px rgba(0, 0, 0, 0.4),
      inset 0 4px 8px rgba(0, 0, 0, 0.2);
  }
  50% { 
    border-color: #667eea;
    box-shadow: 
      inset 0 0 25px rgba(0, 0, 0, 0.5),
      inset 0 4px 12px rgba(0, 0, 0, 0.3),
      0 0 15px rgba(102, 126, 234, 0.3);
  }
}

.drag-puzzle-piece {
  position: absolute;
  width: min(70px, calc((100vw - 4rem) * 0.206));
  height: min(70px, calc((100vw - 4rem) * 0.206));
  background-size: cover;
  background-position: center;
  border-radius: clamp(6px, 1.5vw, 8px);
  cursor: grab;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.25),
    0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 10;
  border: clamp(1px, 0.3vw, 2px) solid rgba(255, 255, 255, 0.8);
  touch-action: none;
}

.drag-puzzle-piece:hover {
  transform: scale(1.05);
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.3),
    0 4px 8px rgba(0, 0, 0, 0.15);
  cursor: grab;
}

.drag-puzzle-piece:active {
  cursor: grabbing;
  transform: scale(1.1);
}

.drag-puzzle-piece.verified {
  cursor: default;
  transform: scale(1);
  box-shadow: 
    0 0 25px rgba(76, 175, 80, 0.6),
    0 0 50px rgba(76, 175, 80, 0.3),
    0 4px 15px rgba(0, 0, 0, 0.2);
  border: 3px solid #4caf50;
  animation: success 0.6s ease-out;
}

@keyframes success {
  0% {
    transform: scale(1.2);
    filter: brightness(1.3);
  }
  50% {
    transform: scale(1.1);
    filter: brightness(1.2);
  }
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
}

.drag-puzzle-slider {
  width: min(340px, calc(100vw - 4rem));
  max-width: 100%;
  margin: 0 auto;
}

.drag-puzzle-track {
  position: relative;
  width: 100%;
  height: clamp(50px, 12vw, 54px);
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
  border-radius: clamp(22px, 6vw, 25px);
  border: clamp(1px, 0.3vw, 2px) solid #dee2e6;
  margin-bottom: clamp(0.75em, 2vw, 1em);
  overflow: hidden;
  box-shadow: 
    inset 0 2px 8px rgba(0, 0, 0, 0.1),
    0 2px 4px rgba(0, 0, 0, 0.05);
}

.drag-puzzle-track::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, 
    rgba(102, 126, 234, 0.1) 0%, 
    rgba(102, 126, 234, 0.05) 50%, 
    rgba(102, 126, 234, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.drag-puzzle-track:hover::before {
  opacity: 1;
}

.drag-puzzle-slider-button {
  position: absolute;
  top: clamp(2px, 0.5vw, 3px);
  width: clamp(42px, 10vw, 44px);
  height: clamp(42px, 10vw, 44px);
  min-width: 44px; /* Touch target minimum */
  min-height: 44px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: clamp(2px, 0.5vw, 3px) solid #dee2e6;
  border-radius: 50%;
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  position: relative;
  overflow: hidden;
  touch-action: manipulation;
}

.drag-puzzle-slider-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.4) 50%, 
    transparent 100%);
  transition: left 0.5s ease;
}

.drag-puzzle-slider-button:hover::before {
  left: 100%;
}

.drag-puzzle-slider-button:hover {
  background: linear-gradient(135deg, #ffffff 0%, #f1f3f4 100%);
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transform: scale(1.05);
}

.drag-puzzle-slider-button.dragging {
  cursor: grabbing;
  transform: scale(1.1);
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  border-color: #667eea;
}

.drag-puzzle-slider-button.verified {
  background: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
  border-color: #4caf50;
  color: white;
  cursor: default;
  transform: scale(1);
  box-shadow: 
    0 0 20px rgba(76, 175, 80, 0.4),
    0 4px 15px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  animation: verifiedPulse 2s ease-in-out infinite;
}

@keyframes verifiedPulse {
  0%, 100% {
    box-shadow: 
      0 0 20px rgba(76, 175, 80, 0.4),
      0 4px 15px rgba(0, 0, 0, 0.2),
      inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
  50% {
    box-shadow: 
      0 0 30px rgba(76, 175, 80, 0.6),
      0 4px 15px rgba(0, 0, 0, 0.2),
      inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
}

.drag-puzzle-slider-icon {
  font-size: 18px;
  font-weight: bold;
  color: #6c757d;
  transition: all 0.3s ease;
  z-index: 1;
  position: relative;
}

.drag-puzzle-slider-button:hover .drag-puzzle-slider-icon {
  color: #495057;
}

.drag-puzzle-slider-button.verified .drag-puzzle-slider-icon {
  color: white;
  animation: checkmark 0.6s ease-out;
}

@keyframes checkmark {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.drag-puzzle-text {
  text-align: center;
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 1.5em;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: all 0.3s ease;
}

.drag-puzzle-attempts {
  text-align: center;
  font-size: 13px;
  color: #dc3545;
  margin-bottom: 0;
  font-weight: 600;
  padding: 0.5em 1em;
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(220, 53, 69, 0.05));
  border-radius: 25px;
  border: 1px solid rgba(220, 53, 69, 0.2);
  display: inline-block;
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.drag-puzzle-actions {
  text-align: center;
  margin-top: 0;
}

.drag-puzzle-attempts-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75em;
  margin-top: 0.75em;
}

.drag-puzzle-refresh {
  background: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
  border: 2px solid transparent;
  border-radius: 25px;
  padding: 0.75em 1.5em;
  font-size: 13px;
  color: white;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.drag-puzzle-refresh::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.2) 50%, 
    transparent 100%);
  transition: left 0.5s ease;
}

.drag-puzzle-refresh:hover:not(:disabled) {
  background: linear-gradient(135deg, #5a6268 0%, #495057 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 117, 125, 0.4);
}

.drag-puzzle-refresh:hover:not(:disabled)::before {
  left: 100%;
}

.drag-puzzle-refresh:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(108, 117, 125, 0.4);
}

.drag-puzzle-refresh:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
  color: #6c757d;
  box-shadow: none;
}

/* Enhanced Mobile and Tablet Responsiveness */

/* Tablets and small laptops */
@media (max-width: 1024px) {
  .drag-puzzle-modal {
    max-width: 85vw;
  }
}

/* Large tablets and small screens */
@media (max-width: 768px) {
  .drag-puzzle-modal-overlay {
    padding: 0.75rem;
  }
  
  .drag-puzzle-modal {
    max-width: calc(100vw - 1.5rem);
    border-radius: 16px;
  }
  
  .drag-puzzle-modal-header {
    padding: 1.25em 1.5em 0.75em;
  }
  
  .drag-puzzle-modal-header h3 {
    font-size: 1.2em;
  }
  
  .drag-puzzle-modal-header h3::before {
    font-size: 1em;
  }
  
  .drag-puzzle-close-btn {
    width: 42px;
    height: 42px;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.3em;
  }
  
  .drag-puzzle-container {
    padding: 2em 1.5em 1.5em;
  }
  
  .drag-puzzle-background {
    width: min(300px, calc(100vw - 3rem));
    height: min(158px, calc((100vw - 3rem) * 0.527));
  }
  
  .drag-puzzle-hole,
  .drag-puzzle-piece {
    width: min(60px, calc((100vw - 3rem) * 0.2));
    height: min(60px, calc((100vw - 3rem) * 0.2));
  }
  
  .drag-puzzle-slider {
    width: min(300px, calc(100vw - 3rem));
  }
  
  .drag-puzzle-track {
    height: 48px;
  }
  
  .drag-puzzle-slider-button {
    width: 40px;
    height: 40px;
    top: 2px;
    border-radius: 20px;
  }
  
  .drag-puzzle-title {
    font-size: 15px;
    margin-bottom: 1.25em;
  }
  
  .drag-puzzle-text {
    font-size: 13px;
    margin-bottom: 1.25em;
  }
  
  .drag-puzzle-refresh {
    padding: 0.7em 1.3em;
    font-size: 12px;
  }
  
  .drag-puzzle-attempts {
    font-size: 12px;
    padding: 0.3em 0.7em;
    margin-bottom: 0;
  }
  
  .drag-puzzle-actions {
    margin-top: 0;
  }
  
  .drag-puzzle-attempts-container {
    gap: 0.5em;
    margin-top: 0.5em;
  }
  
  .drag-puzzle-refresh {
    padding: 0.6em 1.2em;
    font-size: 12px;
  }
}

/* Mobile phones and small tablets */
@media (max-width: 480px) {
  .drag-puzzle-modal-overlay {
    padding: 0.5rem;
    align-items: flex-start;
    padding-top: 2rem;
  }
  
  .drag-puzzle-modal {
    max-width: calc(100vw - 1rem);
    border-radius: 14px;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
  }
  
  .drag-puzzle-modal-header {
    padding: 1em 1.25em 0.5em;
  }
  
  .drag-puzzle-modal-header h3 {
    font-size: 1.1em;
  }
  
  .drag-puzzle-close-btn {
    width: 38px;
    height: 38px;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.2em;
  }
  
  .drag-puzzle-container {
    padding: 1.5em 1.25em 1.25em;
  }
  
  .drag-puzzle-background {
    width: min(280px, calc(100vw - 2.5rem));
    height: min(148px, calc((100vw - 2.5rem) * 0.529));
  }
  
  .drag-puzzle-hole,
  .drag-puzzle-piece {
    width: min(55px, calc((100vw - 2.5rem) * 0.196));
    height: min(55px, calc((100vw - 2.5rem) * 0.196));
  }
  
  .drag-puzzle-slider {
    width: min(280px, calc(100vw - 2.5rem));
  }
  
  .drag-puzzle-track {
    height: 44px;
  }
  
  .drag-puzzle-slider-button {
    width: 36px;
    height: 36px;
    min-width: 44px;
    min-height: 44px;
    top: 2px;
    border-radius: 18px;
  }
  
  .drag-puzzle-slider-icon {
    font-size: 16px;
  }
  
  .drag-puzzle-title {
    font-size: 14px;
    margin-bottom: 1em;
    line-height: 1.4;
  }
  
  .drag-puzzle-text {
    font-size: 12px;
    margin-bottom: 1em;
    line-height: 1.4;
  }
  
  .drag-puzzle-refresh {
    padding: 0.6em 1.1em;
    font-size: 11px;
  }
  
  .drag-puzzle-attempts {
    font-size: 11px;
    padding: 0.3em 0.6em;
    margin-bottom: 0;
  }
  
  .drag-puzzle-actions {
    margin-top: 0;
  }
  
  .drag-puzzle-attempts-container {
    gap: 0.4em;
    margin-top: 0.4em;
  }
  
  .drag-puzzle-refresh {
    padding: 0.6em 1.1em;
    font-size: 11px;
  }
  
  /* Make attempts and refresh button more compact on very small screens */
  .drag-puzzle-attempts + .drag-puzzle-actions {
    margin-top: 0;
  }
}

/* Very small mobile screens */
@media (max-width: 360px) {
  .drag-puzzle-modal-overlay {
    padding: 0.25rem;
    padding-top: 1rem;
  }
  
  .drag-puzzle-modal {
    max-width: calc(100vw - 0.5rem);
  }
  
  .drag-puzzle-container {
    padding: 1.25em 1em 1em;
  }
  
  .drag-puzzle-background {
    width: min(260px, calc(100vw - 2rem));
    height: min(137px, calc((100vw - 2rem) * 0.527));
  }
  
  .drag-puzzle-hole,
  .drag-puzzle-piece {
    width: min(50px, calc((100vw - 2rem) * 0.192));
    height: min(50px, calc((100vw - 2rem) * 0.192));
  }
  
  .drag-puzzle-slider {
    width: min(260px, calc(100vw - 2rem));
  }
  
  .drag-puzzle-track {
    height: 42px;
  }
  
  .drag-puzzle-slider-button {
    width: 34px;
    height: 34px;
    min-width: 44px;
    min-height: 44px;
    top: 2px;
  }
  
  /* Compact layout for attempts and refresh button */
  .drag-puzzle-attempts {
    font-size: 10px;
    padding: 0.25em 0.5em;
    margin-bottom: 0;
    border-radius: 15px;
  }
  
  .drag-puzzle-actions {
    margin-top: 0;
  }
  
  .drag-puzzle-attempts-container {
    gap: 0.3em;
    margin-top: 0.3em;
  }
  
  .drag-puzzle-refresh {
    padding: 0.5em 0.9em;
    font-size: 10px;
    border-radius: 15px;
  }
  
  /* Alternative: Side-by-side layout for very tight spaces */
  .drag-puzzle-attempts-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3em;
  }
  
  /* Compact layout when both attempts and refresh are visible */
  @media (max-height: 600px), (max-width: 360px) {
    .drag-puzzle-attempts-container {
      flex-direction: row;
      justify-content: center;
      gap: 0.5em;
      flex-wrap: wrap;
    }
    
    .drag-puzzle-attempts {
      margin-bottom: 0;
      flex-shrink: 0;
    }
    
    .drag-puzzle-actions {
      margin-top: 0;
      flex-shrink: 0;
    }
    
    .drag-puzzle-refresh {
      padding: 0.4em 0.7em;
      font-size: 9px;
    }
  }
}

/* Landscape orientation for mobile devices */
@media (max-height: 600px) and (orientation: landscape) {
  .drag-puzzle-modal-overlay {
    align-items: flex-start;
    padding-top: 1rem;
    overflow-y: auto;
  }
  
  .drag-puzzle-modal {
    max-height: calc(100vh - 2rem);
    margin: 0 auto;
  }
  
  .drag-puzzle-modal-header {
    padding: 0.75em 1.5em 0.5em;
  }
  
  .drag-puzzle-container {
    padding: 1.25em 1.5em 1em;
  }
  
  .drag-puzzle-title {
    margin-bottom: 0.75em;
  }
  
  .drag-puzzle-background {
    margin-bottom: 1em;
  }
  
  .drag-puzzle-text {
    margin-bottom: 0.75em;
  }
}

/* Touch device optimizations */
@media (pointer: coarse) {
  .drag-puzzle-piece {
    cursor: pointer;
  }
  
  .drag-puzzle-piece:hover {
    transform: none;
  }
  
  .drag-puzzle-slider-button {
    cursor: pointer;
  }
  
  .drag-puzzle-slider-button:hover {
    transform: none;
  }
  
  /* Ensure touch targets are at least 44px */
  .drag-puzzle-close-btn,
  .drag-puzzle-refresh,
  .drag-puzzle-slider-button {
    min-width: 44px;
    min-height: 44px;
  }
}

/* High DPI screens */
@media (min-resolution: 2dppx) {
  .drag-puzzle-background,
  .drag-puzzle-piece {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Success animation for the entire modal */
.drag-puzzle-modal.success-animation {
  animation: successBounce 0.8s ease-out;
}

@keyframes successBounce {
  0% { transform: scale(1); }
  25% { transform: scale(1.02); }
  50% { transform: scale(0.98); }
  75% { transform: scale(1.01); }
  100% { transform: scale(1); }
}

/* Enhanced focus states for accessibility */
.drag-puzzle-close-btn:focus,
.drag-puzzle-refresh:focus,
.drag-puzzle-slider-button:focus {
  outline: 3px solid rgba(102, 126, 234, 0.5);
  outline-offset: 2px;
}

/* Improved contrast for text */
@media (prefers-contrast: high) {
  .drag-puzzle-title,
  .drag-puzzle-text {
    color: #212529;
    font-weight: 600;
  }
  
  .drag-puzzle-hole {
    border-color: #000;
    border-width: 2px;
  }
}