body {
  margin: 0;
  font-family: Arial;
  background: #0f0f0f;
  color: white;
  text-align: center;
  overflow-x: hidden; /* zoom pe shift fix */
}

* {
  box-sizing: border-box; /* stability fix */
}

/* HERO */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: black;
  padding: 0; /* side gap hata diya */
}

.hero h1 {
  font-size: 50px;
  color: gold;
}

/* ABOUT */
.about {
  padding: 60px;
  background: #111;
}

/* APP */
.app {
  padding: 40px;
}

.card {
  background: #1a1a1a;
  padding: 25px;
  border-radius: 10px;
  width: 350px;
  margin: auto;
}

/* INPUTS */
input, select {
  width: 90%;
  padding: 10px;
  margin: 10px;
  border-radius: 5px;
  border: none;
}

/* BUTTON (FIXED) */
button {
  padding: 12px;
  width: 100%;
  background: gold;
  border: none;
  border-radius: 0; /* full edge touch look */
  cursor: pointer;
  display: block;
}

/* RESULT */
.result-box {
  margin-top: 15px;
  padding: 10px;
  background: black;
  border-radius: 8px;
}