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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #333;
  line-height: 1.6;
  min-height: 100vh;
  padding: 2rem 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.header {
  color: white;
  margin-bottom: 3rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header h1 svg {
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.95;
  font-weight: 300;
}

.auth-section {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.btn-auth {
  background: white;
  color: #667eea;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-auth:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-auth.authenticated {
  background: #10b981;
  color: white;
}

.auth-status {
  font-size: 0.875rem;
  opacity: 0.9;
}

.api-controls {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.api-status {
  font-size: 0.875rem;
  color: #666;
}

.card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  margin-bottom: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #667eea;
  font-weight: 600;
}

.description {
  color: #666;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.upload-area {
  border: 2px dashed #d1d5db;
  border-radius: 8px;
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.3s;
  background: #f9fafb;
}

.upload-area:hover {
  border-color: #667eea;
  background: #f3f4f6;
}

.upload-area.dragover {
  border-color: #667eea;
  background: #eef2ff;
  border-style: solid;
}

.upload-area svg {
  color: #9ca3af;
  margin-bottom: 1rem;
}

.upload-area p {
  color: #6b7280;
  margin-bottom: 1rem;
}

.file-label {
  cursor: pointer;
}

.file-label input[type="file"] {
  display: none;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary {
  background: #667eea;
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: #5568d3;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-primary:disabled {
  background: #9ca3af;
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.3);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  width: 100%;
  justify-content: center;
}

.file-info {
  margin-top: 1rem;
  padding: 1rem;
  background: #f0fdf4;
  border-left: 4px solid #10b981;
  border-radius: 4px;
  display: none;
}

.file-info.show {
  display: block;
}

.progress {
  margin-top: 1rem;
  display: none;
}

.progress.show {
  display: block;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  border-radius: 4px;
  transition: width 0.3s;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.results-section {
  animation: fadeIn 0.5s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.table-container {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.results-table thead {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.results-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.results-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid #e5e7eb;
}

.results-table tbody tr:hover {
  background: #f9fafb;
}

.results-table tbody tr:last-child td {
  border-bottom: none;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  body {
    padding: 1rem 0.5rem;
  }

  .header h1 {
    font-size: 1.75rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .card {
    padding: 1.5rem;
  }

  .upload-area {
    padding: 2rem 1rem;
  }

  .results-header {
    flex-direction: column;
    align-items: stretch;
  }

  .results-table {
    font-size: 0.85rem;
  }

  .results-table th,
  .results-table td {
    padding: 0.75rem 0.5rem;
  }
}