:root {
  --bg: #020617;
  --card: #0f172a;
  --primary: #38bdf8;
  --secondary: #22c55e;
  --text: #e5e7eb;
  --muted: #94a3b8;
}

* {
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, var(--bg), var(--bg) 60%);
  color: var(--text);
}

.site-header {
  padding: 20px 40px;
}

.logo {
  color: var(--primary);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.4rem;
}

.logo span {
  color: var(--secondary);
}

.tool-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 40px;
  background: rgba(15, 23, 42, 0.85);
  border-radius: 32px;
  border: 1px solid var(--primary);
}

.tool-title {
  font-size: 2.4rem;
}

.tool-description {
  color: var(--muted);
  margin-bottom: 30px;
}

.tool-box {
  margin-bottom: 25px;
}

label {
  color: var(--primary);
  font-weight: 600;
}

textarea {
  width: 100%;
  min-height: 150px;
  background: #020617;
  color: var(--text);
  border-radius: 16px;
  padding: 15px;
  border: none;
}

.tool-actions {
  display: flex;
  gap: 15px;
}

button {
  padding: 12px 28px;
  border-radius: 999px;
  background: var(--primary);
  border: none;
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}