/**
 * わり算の筆算計算機 - スタイルシート
 * Version: 1.0.0
 */

.wp-division-app * {
  box-sizing: border-box;
}

.wp-division-app {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'ヒラギノ角ゴ ProN W3', 'Hiragino Kaku Gothic ProN', sans-serif;
  margin: 20px 0;
  padding: 10px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border-radius: 12px;
  color: #2d3748;
  position: relative;
  z-index: 1;
}

.wp-division-app .app-container {
  background: white;
  border-radius: 12px;
  padding: 20px;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  border: 1px solid #e2e8f0;
  display: grid;
  grid-template-columns: 350px 1fr;
  grid-template-rows: auto 1fr;
  gap: 20px;
  min-height: 600px;
}

.wp-division-app .app-header {
  grid-column: 1 / -1;
  text-align: center;
  margin-bottom: 0;
}

.wp-division-app .app-title {
  color: #2d3748;
  margin: 0;
  font-size: 1.8em;
  font-weight: 600;
}

.wp-division-app .input-panel {
  display: flex;
  flex-direction: column;
  gap: 15px;
  overflow-y: auto;
}

.wp-division-app .input-section {
  background: #f8fafc;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.wp-division-app .division-input {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 15px;
  font-size: 2em;
  font-weight: 600;
}

.wp-division-app .input-box {
  width: 80px;
  height: 50px;
  border: 2px solid #cbd5e0;
  border-radius: 8px;
  background: white;
  font-size: 1em;
  text-align: center;
  font-weight: 600;
  color: #2d3748;
  outline: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.wp-division-app .input-box:focus, 
.wp-division-app .input-box:hover {
  border-color: #4299e1;
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

.wp-division-app .input-box.active {
  border-color: #667eea;
  transform: scale(1.05);
}

.wp-division-app .division-symbol {
  font-size: 0.8em;
  color: #4a5568;
  font-weight: 600;
}

.wp-division-app .number-pad {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 15px;
  background: white;
  border-radius: 8px;
  border: 2px solid #4299e1;
  position: relative;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  animation: fadeIn 0.2s ease-in-out;
}

.wp-division-app .number-pad.show {
  display: grid;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.wp-division-app .num-btn {
  width: 45px;
  height: 40px;
  border: none;
  border-radius: 6px;
  background: #4299e1;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.wp-division-app .num-btn:hover {
  background: #3182ce;
  transform: translateY(-1px);
}

.wp-division-app .num-btn:active {
  transform: translateY(0);
  transition: transform 0.1s ease;
}

.wp-division-app .num-btn.clear {
  background: #e53e3e;
}

.wp-division-app .num-btn.clear:hover {
  background: #c53030;
}

.wp-division-app .num-btn.backspace {
  background: #ed8936;
  font-size: 12px;
}

.wp-division-app .num-btn.backspace:hover {
  background: #dd6b20;
}

.wp-division-app .control-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.wp-division-app .main-button {
  font-size: 14px;
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.wp-division-app .generate-btn {
  background: #48bb78;
  color: white;
}

.wp-division-app .generate-btn:hover {
  background: #38a169;
  transform: translateY(-1px);
}

.wp-division-app .generate-btn:disabled {
  background: #a0aec0;
  cursor: not-allowed;
  transform: none;
}

.wp-division-app .clear-btn {
  background: #a0aec0;
  color: white;
}

.wp-division-app .clear-btn:hover {
  background: #718096;
  transform: translateY(-1px);
}

.wp-division-app .step-list {
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  padding: 15px;
  max-height: 300px;
  overflow-y: auto;
}

.wp-division-app .step-list h3 {
  margin: 0 0 10px 0;
  font-size: 16px;
  color: #2d3748;
}

.wp-division-app .step-item {
  padding: 8px 12px;
  margin: 4px 0;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
  font-size: 14px;
  line-height: 1.4;
  user-select: none;
}

.wp-division-app .step-item:hover {
  background: #e2e8f0;
}

.wp-division-app .step-item.active {
  background: #4299e1;
  color: white;
  border-left-color: #2b6cb0;
  font-weight: 600;
}

.wp-division-app .step-item.completed {
  background: #c6f6d5;
  border-left-color: #38a169;
}

.wp-division-app .step-item .step-number {
  font-weight: 600;
  display: inline-block;
  width: 60px;
}

.wp-division-app .step-item .step-description {
  font-size: 13px;
  opacity: 0.8;
}

.wp-division-app .calculation-area {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
  padding: 20px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.wp-division-app .navigation-buttons {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}

.wp-division-app .side-btn {
  background: #4299e1;
  color: white;
  border: none;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 60px;
  user-select: none;
}

.wp-division-app .side-btn:hover:not(:disabled) {
  background: #3182ce;
  transform: translateY(-1px);
}

.wp-division-app .side-btn:disabled {
  background: #cbd5e0;
  cursor: not-allowed;
  transform: none;
}

.wp-division-app .step-info {
  font-size: 14px;
  font-weight: 600;
  color: #2d3748;
  padding: 8px 12px;
  background: white;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
  text-align: center;
  flex: 1;
}

.wp-division-app .result-content {
  flex: 1;
  overflow-y: auto;
}

.wp-division-app table.hissan {
  margin: 15px auto;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  border: 1px solid #e2e8f0;
}

.wp-division-app table.hissan td {
  width: 35px;
  height: 35px;
  text-align: center;
  vertical-align: middle;
  border: 1px solid #f1f5f9;
  font-size: 16px;
  font-weight: 600;
  font-family: 'Courier New', Consolas, Monaco, monospace;
}

.wp-division-app .quotient { 
  color: #e53e3e !important; 
  font-weight: bold; 
  font-size: 18px;
  background: #fed7d7;
}

.wp-division-app .dividend { 
  font-weight: bold; 
  background: #e6fffa;
}

.wp-division-app .divisor { 
  font-weight: bold; 
  color: #2d3748;
  font-size: 18px;
  background: #edf2f7;
}

.wp-division-app .subtract { 
  color: #805ad5; 
  background: #faf5ff;
  font-weight: bold;
}

.wp-division-app .remainder { 
  color: #38a169; 
  font-weight: bold;
  background: #c6f6d5;
}

.wp-division-app .line { 
  border-top: 3px solid #2d3748; 
  height: 6px;
}

.wp-division-app .top-line {
  border-top: 3px solid #2d3748;
  height: 6px;
}

.wp-division-app .bottom-line {
  border-bottom: 3px solid #2d3748;
  height: 6px;
}

.wp-division-app .result-section {
  background: #f0fff4;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 15px;
  border: 1px solid #9ae6b4;
  font-size: 16px;
  font-weight: 600;
  color: #2d3748;
  text-align: center;
}

.wp-division-app .step-explanation {
  text-align: left;
  background: #fffaf0;
  padding: 15px;
  border-radius: 8px;
  margin-top: 15px;
  border-left: 4px solid #ed8936;
}

.wp-division-app .step-explanation h3 {
  color: #c05621;
  margin: 0 0 8px 0;
  font-size: 16px;
  font-weight: 600;
}

.wp-division-app .step-explanation p {
  font-size: 14px;
  line-height: 1.4;
  margin: 0;
  color: #4a5568;
}

.wp-division-app .empty-state {
  text-align: center;
  color: #a0aec0;
  font-style: italic;
  padding: 40px 20px;
}

.wp-division-app .empty-state-icon {
  font-size: 48px;
  margin-bottom: 15px;
  display: block;
}

.wp-division-app .empty-state-text {
  font-size: 16px;
  line-height: 1.5;
}

.wp-division-app .celebration {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #48bb78;
  color: white;
  padding: 20px 30px;
  border-radius: 10px;
  font-size: 18px;
  font-weight: bold;
  z-index: 10000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  animation: celebrationPop 0.5s ease-out;
}

@keyframes celebrationPop {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
  }
  70% {
    transform: translate(-50%, -50%) scale(1.1);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .wp-division-app .app-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
    min-height: 500px;
    padding: 15px;
    gap: 15px;
  }
  
  .wp-division-app .app-title {
    font-size: 1.5em;
  }
  
  .wp-division-app .division-input {
    flex-direction: column;
    gap: 10px;
    font-size: 1.8em;
  }
  
  .wp-division-app .input-box {
    width: 70px;
    height: 45px;
    font-size: 0.9em;
  }
  
  .wp-division-app .step-list {
    max-height: 200px;
  }
  
  .wp-division-app .navigation-buttons {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  
  .wp-division-app table.hissan td {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }
  
  .wp-division-app .quotient, 
  .wp-division-app .divisor {
    font-size: 16px !important;
  }
}

@media (max-width: 480px) {
  .wp-division-app {
    margin: 10px 0;
    padding: 5px;
  }
  
  .wp-division-app .app-container {
    padding: 10px;
  }
  
  .wp-division-app .input-section {
    padding: 15px;
  }
  
  .wp-division-app .calculation-area {
    padding: 15px;
  }
  
  .wp-division-app table.hissan td {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }
}

/* ダークモード対応 */
@media (prefers-color-scheme: dark) {
  .wp-division-app {
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    color: #e2e8f0;
  }
  
  .wp-division-app .app-container {
    background: #2d3748;
    border-color: #4a5568;
  }
  
  .wp-division-app .app-title {
    color: #e2e8f0;
  }
  
  .wp-division-app .input-section,
  .wp-division-app .step-list,
  .wp-division-app .calculation-area {
    background: #1a202c;
    border-color: #4a5568;
  }
  
  .wp-division-app .input-box {
    background: #2d3748;
    border-color: #4a5568;
    color: #e2e8f0;
  }
  
  .wp-division-app .step-info {
    background: #2d3748;
    border-color: #4a5568;
    color: #e2e8f0;
  }
  
  .wp-division-app table.hissan {
    background: #2d3748;
    border-color: #4a5568;
  }
  
  .wp-division-app table.hissan td {
    border-color: #4a5568;
  }
}

/* 印刷用スタイル */
@media print {
  .wp-division-app .input-panel,
  .wp-division-app .navigation-buttons {
    display: none;
  }
  
  .wp-division-app .app-container {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .wp-division-app .calculation-area {
    border: none;
    background: white;
  }
}