* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  margin: 0;

  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 16px;
  /* box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3); */
  padding: 40px;
}

h1 {
  margin: 0 0 10px 0;
  color: #2d3748;
  font-size: 32px;
}

.subtitle {
  color: #718096;
  margin-bottom: 30px;
  font-size: 14px;
}

.reality-box {
  background: #fef3c7;
  border-left: 4px solid #f59e0b;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.6;
}

.reality-box h3 {
  margin: 0 0 10px 0;
  color: #92400e;
  font-size: 16px;
}

.reality-box ul {
  margin: 10px 0;
  padding-left: 20px;
}

.reality-box li {
  margin: 6px 0;
  color: #78350f;
}

.upload-zone {
  border: 3px dashed #cbd5e0;
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  background: #f7fafc;
  transition: all 0.3s;
  cursor: pointer;
}

.upload-zone:hover {
  border-color: #667eea;
  background: #edf2f7;
}

.upload-zone.dragover {
  border-color: #667eea;
  background: #e6fffa;
}

.upload-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

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

.settings {
  margin: 30px 0;
  padding: 24px;
  background: #f7fafc;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
}

.settings h3 {
  margin: 0 0 20px 0;
  color: #2d3748;
  font-size: 18px;
}

.setting-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.setting-group {
  display: flex;
  flex-direction: column;
}

label {
  font-size: 13px;
  font-weight: 600;
  color: #4a5568;
  margin-bottom: 6px;
}

input[type="number"],
select {
  padding: 10px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
}

input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: #667eea;
}

.compress-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  margin-top: 20px;
}

.compress-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.compress-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.alternatives {
  margin-top: 30px;
  padding: 24px;
  background: #eff6ff;
  border-radius: 12px;
  border: 2px solid #3b82f6;
}

.alternatives h3 {
  margin: 0 0 16px 0;
  color: #1e40af;
  font-size: 18px;
}

.alternative-option {
  background: white;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  border-left: 4px solid #3b82f6;
}

.alternative-option h4 {
  margin: 0 0 8px 0;
  color: #1e40af;
  font-size: 15px;
}

.alternative-option p {
  margin: 0;
  font-size: 13px;
  color: #475569;
  line-height: 1.5;
}

.cmd-box {
  background: #1e293b;
  color: #e2e8f0;
  padding: 12px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  margin-top: 8px;
  overflow-x: auto;
}

.results {
  margin-top: 30px;
}

.file-card {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.file-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.file-name {
  font-weight: 600;
  color: #2d3748;
  font-size: 16px;
  flex: 1;
  word-break: break-word;
}

.file-status {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.status-processing {
  background: #fef3c7;
  color: #92400e;
}

.status-success {
  background: #d1fae5;
  color: #065f46;
}

.status-nochange {
  background: #e5e7eb;
  color: #374151;
}

.status-error {
  background: #fee2e2;
  color: #991b1b;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: #e2e8f0;
  border-radius: 10px;
  overflow: hidden;
  margin: 12px 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  width: 0%;
  transition: width 0.3s;
}

.file-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.stat {
  padding: 12px;
  background: #f7fafc;
  border-radius: 8px;
  text-align: center;
}

.stat-label {
  font-size: 11px;
  color: #718096;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 16px;
  font-weight: 700;
  color: #2d3748;
}

.savings {
  color: #059669;
}

.download-btn {
  display: inline-block;
  padding: 12px 24px;
  background: #10b981;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s;
  margin-top: 8px;
}

.download-btn:hover {
  background: #059669;
  transform: translateY(-1px);
}

.analysis-info {
  font-size: 13px;
  color: #6b7280;
  margin-top: 12px;
  padding: 12px;
  background: #f9fafb;
  border-radius: 6px;
  line-height: 1.6;
}