html, body {
  height: 100%;
  margin: 0;
  font-family: Arial, sans-serif;
  background: #ffffff;
  color: #000;
}

/* Container that fills the screen */
.wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
  max-width: 1000px;
  padding: 40px 20px;
  margin: 0 auto;
  box-sizing: border-box;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: bold;
}

.menu-icon {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

.main {
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
}

.welcome {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.subtitle {
  color: #555;
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.upload-box {
  background: #fff;
  border: 1px solid #ddd;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  margin-bottom: 1.5rem;
  text-align: left;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.upload-label {
  font-weight: bold;
  display: block;
  margin-bottom: 12px;
}

.upload-area {
  border: 2px dashed #ccc;
  padding: 28px;
  text-align: center;
  cursor: pointer;
  border-radius: 10px;
}

.upload-area .subtext {
  color: #999;
  font-size: 0.85rem;
}

.upload-icon {
  font-size: 1.5rem;
  margin-top: 10px;
}

.file-list {
  margin-top: 16px;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f9f9f9;
  border: 1px solid #eee;
  padding: 8px;
  margin-bottom: 8px;
  border-radius: 6px;
}

.remove-btn {
  background: none;
  border: none;
  color: red;
  font-size: 1.2rem;
  cursor: pointer;
}

.start-btn {
  margin-top: 20px;
  background-color: #111827;
  color: white;
  border: none;
  padding: 14px 28px;
  font-size: 1.1rem;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

.start-btn:hover {
  background-color: #1f2937;
}

/* Responsive */
@media (max-width: 768px) {
  .welcome {
    font-size: 2.2rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .upload-box {
    padding: 20px;
  }

  .start-btn {
    padding: 12px 20px;
  }
}

@media (max-width: 480px) {
  .welcome {
    font-size: 1.8rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }
}
.menu {
  position: relative;
}

.menu-icon {
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  background: #fff;
  position: absolute;
  top: 40px;
  right: 0;
  border: 1px solid #ddd;
  border-radius: 8px;
  display: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 10;
  min-width: 150px;
}

.menu-list li {
  padding: 10px 20px;
}

.menu-list li a {
  text-decoration: none;
  color: #000;
  display: flex;
  align-items: center;
  gap: 8px;
}

.menu-list li a.active {
  text-decoration: underline;
}

.menu-list li a:hover {
  background-color: #f3f4f6;
  border-radius: 5px;
}

.github-icon {
  width: 18px;
  height: 18px;
}