* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.container {
  text-align: center;
  padding: 30px 15px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.main-title {
  font-size: 2.25rem;
  color: #ffffff;
  margin-bottom: 20px;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.5);
}

.subtitle {
  font-size: 1.125rem;
  color: #e0f0ff;
  margin-bottom: 25px;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
}

.download-section {
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  max-width: 400px;
  margin: 0 auto;
  padding: 0 10px;
}

.download-btn {
  color: white;
  font-size: 1.125rem;
  padding: 14px 30px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  white-space: nowrap;
  max-width: 100%;
  min-width: 140px;
  box-sizing: border-box;
}

#standardBtn {
  background-color: #007bff;
  box-shadow: 0 6px 12px rgba(0, 123, 255, 0.4);
}

#standardBtn:hover {
  background-color: #188bfd;
  box-shadow: 0 8px 16px rgba(51, 153, 255, 0.6);
}

#standardBtn:active {
  background-color: #0b6bca;
  box-shadow: 0 4px 8px rgba(0, 51, 102, 0.5);
}

#standardBtn:focus {
  outline: 2px solid white;
  outline-offset: 0;
}

#dotnetBtn {
  background-color: #03d31f;
  box-shadow: 0 6px 12px rgba(40, 167, 69, 0.4);
}

#dotnetBtn:hover {
  background-color: #07d638;
  box-shadow: 0 8px 16px rgba(62, 193, 99, 0.6);
}

#dotnetBtn:active {
  background-color: #08b12f;
  box-shadow: 0 4px 8px rgba(30, 126, 52, 0.5);
}

#dotnetBtn:focus {
  outline: 2px solid white;
  outline-offset: 0;
}

.download-info {
  font-size: 0.875rem;
  color: #f0f4f8;
  margin-bottom: 10px;
  text-align: center;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 10px;
  box-sizing: border-box;
}

.footer {
  background-color: #0f3460;
  color: #c9dfff;
  padding: 15px 30px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  width: 100%;
  box-sizing: border-box;
}

.footer p {
  margin: 5px 0;
}

.footer a {
  color: #c9dfff;
  text-decoration: none;
  margin: 0 6px;
  transition: color 0.3s ease;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.footer a:hover {
  color: #ffffff;
}

@media (max-width: 480px) {
  .main-title {
    font-size: 1.5rem;
    padding: 0 10px;
  }
  .subtitle {
    font-size: 1rem;
    padding: 0 10px;
  }
  .download-btn {
    font-size: 1rem;
    padding: 12px 20px;
    min-width: unset;
    width: auto;
    max-width: 100%;
  }
  .download-section {
    max-width: 100%;
    padding: 0 10px;
    gap: 15px;
  }
  .download-info {
    font-size: 0.75rem;
    max-width: 100%;
  }
  .container {
    padding: 20px 10px;
  }
  .footer {
    font-size: 0.75rem;
    padding: 15px 10px;
  }
}