* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a2e;
  color: #eee;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  max-width: 520px;
  width: 100%;
  background: #16213e;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

h1 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.text {
  margin: 0 0 1.5rem;
  line-height: 1.5;
  color: #b8c5d6;
}

.upload-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.file-label input {
  display: none;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #0f3460;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background: #1a4a7a;
}

.btn-submit {
  background: #e94560;
}

.btn-submit:hover {
  background: #ff6b6b;
}

.message {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: #8fbcbb;
  min-height: 1.5em;
}