body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #ffffff;
}

header {
  padding: 20px 40px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

.hero {
  max-width: 800px;
  margin: 80px auto;
  text-align: center;
  padding: 20px;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 10px;
}

.hero p {
  color: #94a3b8;
  font-size: 18px;
  margin-bottom: 30px;
}

.tool-box {
  background: #111827;
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.tool-box input {
  width: 70%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  outline: none;
  font-size: 16px;
}

.tool-box button {
  padding: 14px 20px;
  border: none;
  border-radius: 10px;
  background: #2563eb;
  color: white;
  font-size: 16px;
  cursor: pointer;
  margin-left: 10px;
}

.tool-box button:hover {
  opacity: 0.9;
}

.results {
  margin-top: 30px;
}
.error-message {
  margin-top: 14px;
  color: #dc2626;
  font-size: 0.95rem;
  font-weight: 500;
}

.empty-state {
  grid-column: 1 / -1;
  background: #ffffff;
  border: 1px dashed #cbd5e1;
  border-radius: 20px;
  padding: 28px;
  text-align: center;
  color: #64748b;
}

.loading {
  opacity: 0.7;
  pointer-events: none;
}.download-all-btn {
  height: 52px;
  padding: 0 22px;
  border: none;
  border-radius: 14px;
  background: var(--primary);
  color: white;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}