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

:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --success-color: #10b981;
  --success-hover: #059669;
  --danger-color: #ef4444;
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --text-color: #111827;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.card {
  background: var(--card-bg);
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  font-size: 1rem;
  transition: all 0.2s;
  font-family: inherit;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="file"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group small {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 400;
}

.checkbox-group input[type="checkbox"] {
  width: 1.125rem;
  height: 1.125rem;
  margin-right: 0.5rem;
  cursor: pointer;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 0.375rem;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  width: 100%;
  padding: 1rem;
  font-size: 1.125rem;
  box-shadow: var(--shadow);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-success {
  background-color: var(--success-color);
  color: white;
  box-shadow: var(--shadow);
}

.btn-success:hover {
  background-color: var(--success-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

.results-actions {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.results-actions button {
  flex: 1;
  min-width: 150px;
}

.progress-bar {
  width: 100%;
  height: 0.5rem;
  background-color: var(--border-color);
  border-radius: 9999px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 9999px;
  transition: width 0.3s ease;
  width: 0%;
}

#progressText {
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--text-color);
}

#progressLog {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
  max-height: 200px;
  overflow-y: auto;
}

#progressLog li {
  padding: 0.5rem;
  margin-bottom: 0.25rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  background-color: var(--bg-color);
  color: var(--text-secondary);
}

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

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

#resultsInfo {
  background-color: var(--bg-color);
  padding: 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
}

#resultsInfo p {
  margin-bottom: 0.5rem;
}

#resultsInfo strong {
  color: var(--text-color);
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-content {
  background-color: var(--card-bg);
  border-radius: 0.5rem;
  width: 100%;
  max-width: 1200px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0;
  width: 2rem;
  height: 2rem;
}

.close-btn:hover {
  color: var(--text-color);
}

.modal-body {
  flex: 1;
  overflow: auto;
  padding: 1.5rem;
}

#previewFrame {
  width: 100%;
  height: 600px;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
}

footer {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

@media (max-width: 640px) {
  header h1 {
    font-size: 2rem;
  }

  .results-actions {
    flex-direction: column;
  }

  .results-actions button {
    width: 100%;
  }
}