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

body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #1abc9c, #16a085);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
  padding: 20px;
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.2em;
  margin-bottom: 30px;
}

input[type="url"] {
  padding: 10px;
  width: 80%;
  max-width: 400px;
  border: none;
  border-radius: 5px;
  margin-bottom: 20px;
}

button {
  padding: 10px 20px;
  border: none;
  background-color: #f39c12;
  color: #fff;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1em;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #e67e22;
}

.hidden {
  display: none;
}

.progress-bar {
  width: 80%;
  max-width: 400px;
  height: 20px;
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 10px;
  margin: 20px auto;
  overflow: hidden;
}

.progress {
  width: 0;
  height: 100%;
  background-color: #f39c12;
  animation: progressAnim 5s linear forwards;
}

@keyframes progressAnim {
  from { width: 0%; }
  to { width: 100%; }
}