* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f3f5f7;
  color: #1f2937;
}

.container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 680px;
  background: white;
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

h1 {
  margin: 0 0 10px;
  font-size: 2rem;
}

.subtitle {
  color: #4b5563;
  margin-bottom: 26px;
  line-height: 1.5;
}

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  min-height: 220px;
  padding: 30px;
  border: 2px dashed #9ca3af;
  border-radius: 16px;
  background: #f9fafb;
  cursor: pointer;
  text-align: center;
  transition: 0.2s ease;
}

.drop-zone:hover,
.drop-zone.dragover {
  background: #eef2ff;
  border-color: #4f46e5;
}

.drop-zone input {
  display: none;
}

.big {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.file-list {
  margin-top: 18px;
}

.file-item {
  padding: 10px 12px;
  background: #f3f4f6;
  border-radius: 10px;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

button {
  margin-top: 22px;
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 15px 18px;
  font-size: 1rem;
  font-weight: 700;
  color: white;
  background: #111827;
  cursor: pointer;
}

button:hover {
  background: #374151;
}

button:disabled {
  background: #9ca3af;
  cursor: wait;
}

.status {
  margin-top: 16px;
  font-weight: 600;
  color: #374151;
}

.privacy {
  margin-top: 22px;
  font-size: 0.9rem;
  color: #6b7280;
  text-align: center;
}