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

/* BODY */
body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #0f0f0f, #1a1a2e);
  color: #fff;
}

/* HEADER */
header {
  padding: 20px;
  text-align: center;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
}

header h1 {
  font-size: 28px;
}

nav a {
  margin: 0 12px;
  color: #00eaff;
  text-decoration: none;
  font-weight: 500;
}

/* CONTAINER */
.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

/* GRID */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* CARD */
.tool-box {
  background: rgba(255,255,255,0.05);
  padding: 20px;
  border-radius: 15px;
  backdrop-filter: blur(15px);
  transition: 0.3s;
}

.tool-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,255,255,0.2);
}

/* BUTTON */
button {
  background: linear-gradient(135deg, #00eaff, #007bff);
  border: none;
  padding: 12px 20px;
  color: white;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  transform: scale(1.05);
}

/* INPUT */
input, select {
  width: 100%;
  padding: 12px;
  margin-bottom: 12px;
  border-radius: 8px;
  border: none;
  outline: none;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  opacity: 0.7;
}