:root {
  --bg-main: #121212;
  --text-main: #E0E0E0;
  --text-secondary: #A0A0A0;
  --accent: #48C774;
  --card-bg: #1E1E1E;
  --border-color: #2A2A2A;
  --font-primary: 'Poppins', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-primary);
  line-height: 1.6;
}

.navbar {
  backdrop-filter: blur(8px);
  background: rgba(18, 18, 18, 0.85);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar a {
  color: var(--text-main);
  margin-right: 1rem;
  text-decoration: none;
  font-weight: 600;
  transition: color .2s;
}
.navbar a:hover {
  color: var(--accent);
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
}
.hero p {
  margin-top: .5rem;
  font-size: 1.2rem;
  color: var(--text-secondary);
}

.tool-section {
  padding: 3rem 2rem;
}
.tool-section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.tool-cards {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.tool-card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  transition: transform .22s ease, box-shadow .22s ease;
}
.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}
.tool-card h3 {
  font-size: 1.2rem;
  margin-bottom: .5rem;
  color: var(--accent);
}
.tool-card p {
  color: var(--text-secondary);
  font-size: .95rem;
}
.tool-card button {
  margin-top: 1rem;
  padding: .65rem 1rem;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: var(--bg-main);
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}
.tool-card button:hover {
  background: #3EB964;
}