body {
  background: #111;
  color: #f6f6f6;
  font-family: 'Fira Mono', 'Consolas', monospace;
  margin: 0;
  min-height: 100vh;
}
header {
  text-align: center;
  padding: 2em 0 1em 0;
  background: #181818;
  border-bottom: 2px solid #222;
}
h1 {
  margin: 0;
  font-size: 2.5em;
  letter-spacing: 0.05em;
  color: #29fc9e;
  text-shadow: 0 0 8px #29fc9e55;
}
.subtitle {
  color: #aaa;
  font-size: 1.1em;
  margin-top: 0.25em;
  font-style: italic;
}
main {
  max-width: 760px;
  margin: 2em auto;
  background: #181818;
  padding: 1.5em 2em;
  border-radius: 10px;
  box-shadow: 0 0 24px #000b;
}
section {
  margin-bottom: 2em;
}
input[type="file"] {
  background: #191919;
  color: #29fc9e;
  border: 1px solid #29fc9e55;
  padding: 0.4em;
  font-size: 1em;
  border-radius: 5px;
  margin-right: 1em;
}
button {
  background: #29fc9e;
  color: #111;
  border: none;
  padding: 0.6em 1.3em;
  border-radius: 7px;
  font-size: 1em;
  font-family: inherit;
  cursor: pointer;
  margin: 0.4em 0.4em 0.4em 0;
  transition: background 0.18s;
}
button:disabled {
  background: #333;
  color: #666;
  cursor: not-allowed;
}
table {
  width: 100%;
  background: #191919;
  border-collapse: collapse;
  margin: 1em 0;
}
th, td {
  border: 1px solid #222;
  padding: 0.5em 0.7em;
  text-align: left;
}
th {
  background: #222;
  color: #29fc9e;
}
tr:nth-child(even) td {
  background: #151515;
}
#reportStats {
  margin-bottom: 0.7em;
  color: #29fc9e;
}
#historyList {
  font-size: 0.95em;
  color: #ccc;
}
footer {
  text-align: center;
  padding: 1.5em 0 0.7em 0;
  color: #444;
  font-size: 0.95em;
  border-top: 1px solid #191919;
}