* {
  margin: 0;
  padding: 0;

}

body {
  background-color: #f1f2f3;
}

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1560px;
  min-width: 1240px;
  margin: 20px auto;
  color: #333;
}

.container *{
  box-sizing: border-box;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.btn {
  padding: 14px 50px;
  font-size: 1.1rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary {
  background: linear-gradient(135deg, #00b09b, #96c93d);
  color: white;
}

.btn-secondary {
  background: linear-gradient(135deg, #ff8c00, #ff2d55);
  color: white;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(1px);
}

.file-input {
  display: none;
}

.file-list {
  background: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.05);
  margin-bottom: 25px;
  min-height: 200px;
}

.file-list-header {
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 2fr 1.5fr;
  font-weight: bold;
  padding-bottom: 15px;
  border-bottom: 2px solid #f1f2f3;
  margin-bottom: 15px;
}

.file-item {
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 2fr 1.5fr;
  padding: 15px 0;
  border-bottom: 1px solid #f1f2f3;
  align-items: center;
}

.file-item:last-child {
  border-bottom: none;
}

.file-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.status {
  padding: 6px 2px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  width: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status.queued {
  background-color: #e0f7fa;
  color: #00838f;
}

.status.processing {
  background-color: #fff8e1;
  color: #ff8f00;
}

.status.completed {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.status.error {
  background-color: #ffebee;
  color: #c62828;
}

.download-btn {
  background: none;
  border: none;
  color: #2196f3;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.3s;
  margin-right: 6px;
}

.download-btn:hover {
  color: #0d47a1;
}

.settings {
  background: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.05);
  margin-bottom: 25px;
}

.setting-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-label {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.container select,
.container input {
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  background: white;
}

.container select:focus,
.container input:focus {
  outline: none;
  border-color: #2196f3;
  box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
}

.features {
  background: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.05);
}

.features-title {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: #2c3e50;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.feature-card {
  background: #f9f9f9;
  border-radius: 12px;
  padding: 20px 30px;
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.feature-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #2c3e50;
}

.feature-desc {
  color: #555;
}

footer {
  text-align: center;
  padding: 20px 0;
  margin-top: 10px;
  color: #777;
}

.progress-container {
  position: relative;
  width: 80%;
  height: 8px;
  background-color: #e0e0e0;
  border-radius: 4px;
  overflow: hidden;
  top: 2px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #00b09b, #96c93d);
  border-radius: 4px;
  width: 0%;
  transition: width 0.4s ease;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #777;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  opacity: 0.3;
}

.empty-state-text {
  font-size: 1.2rem;
}

.conversion-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: bold;
  color: #2196f3;
}

.stat-label {
  color: #777;
  font-size: 0.9rem;
}

.play-btn {
  background: none;
  border: none;
  color: #4caf50;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.3s;
}

.play-btn:hover {
  color: #2e7d32;
}