:root {
  --red: #ff3c3c;
  --dark: #1a1a1a;
  --gray: #2a2a2a;
  --text: #f5f5f5;
  --light-red: #ff5f5f;
}

body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--dark);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background-color: var(--gray);
  padding: 2rem 2.5rem;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(255, 60, 60, 0.2);
  text-align: center;
  width: 100%;
  max-width: 420px;
}

h1 {
  margin-bottom: 0.3rem;
  color: var(--red);
}

.subtitle {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  color: #ccc;
}

input[type="text"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--red);
  border-radius: 6px;
  margin-top: 1.2rem;
  background-color: #111;
  color: white;
  font-size: 1rem;
}

.file-label {
  display: inline-block;
  background-color: var(--red);
  color: white;
  padding: 0.7rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1rem;
}

button {
  background-color: var(--light-red);
  color: white;
  border: none;
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  border-radius: 6px;
  margin-top: 1.2rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:disabled {
  background-color: #555;
  cursor: not-allowed;
}

#hashDisplay, #status {
  margin-top: 1rem;
  font-size: 0.9rem;
  word-break: break-all;
}

.secondary-button {
  display: inline-block;
  margin-top: 1rem;
  text-decoration: none;
  background-color: transparent;
  color: var(--red);
  border: 1px solid var(--red);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: background-color 0.2s;
}

.secondary-button:hover {
  background-color: var(--red);
  color: white;
}