* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background-color: #f4f4f4;
}

/* NAVBAR */
.navbar {
  background: #ffffff;
  padding: 15px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ddd;
}

.logo {
  font-weight: bold;
  font-size: 20px;
  color: #000;
}

.navbar nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #333;
  font-size: 14px;
}

.navbar nav a.active {
  background: #c40000;
  color: #fff;
  padding: 6px 12px;
  border-radius: 3px;
}

/* HERO SECTION */
.hero {
  background: url("https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d") center/cover no-repeat;
  height: 500px;
  position: relative;
}

.overlay {
  background: rgba(0, 0, 0, 0.6);
  height: 100%;
  color: #fff;
  padding: 80px 40px;
}

.overlay h1 {
  font-size: 36px;
  margin-bottom: 15px;
}

.overlay p {
  max-width: 700px;
  line-height: 1.6;
  margin-bottom: 40px;
}

/* TRACKER BOX */
.tracker-box {
  background: #2f3b45;
  padding: 25px;
  max-width: 400px;
}

.tracker-box label {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 1px;
}

.tracker-box input {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: none;
}

.tracker-box button {
  width: 100%;
  padding: 10px;
  background: #f39c12;
  border: none;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
}

/* FOOTER */
footer {
  background: #0b2b50;
  color: #fff;
  text-align: center;
  padding: 20px;
  font-size: 13px;
}
/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

/* BODY */
body {
  background: #f5f7fa;
  color: #333;
}

/* NAVBAR */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 25px;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  color: #000;
}

.navbar nav a {
  margin-left: 15px;
  text-decoration: none;
  color: #555;
  font-size: 14px;
}

.navbar nav a.active {
  background: #c62828;
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
}

/* HERO */
.hero {
  min-height: 100vh;
  background: url("https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d")
    center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay {
  background: rgba(0,0,0,0.6);
  padding: 40px 20px;
  width: 100%;
  text-align: center;
  color: #fff;
}

/* HERO TEXT */
.overlay h1 {
  font-size: 32px;
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.overlay p {
  max-width: 600px;
  margin: 0 auto 30px;
  font-size: 15px;
  line-height: 1.6;
}

/* TRACKER BOX */
.tracker-box {
  background: #2f3e46;
  max-width: 400px;
  margin: 0 auto;
  padding: 25px;
  border-radius: 6px;
}

.tracker-box label {
  display: block;
  font-size: 12px;
  margin-bottom: 8px;
  color: #ddd;
  text-align: left;
}

.tracker-box input {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  border: none;
  border-radius: 4px;
  margin-bottom: 15px;
}

.tracker-box button {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  border: none;
  background: #f9a825;
  color: #000;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
}

.tracker-box button:hover {
  background: #fbc02d;
}

/* RESULT BOX */
#trackingResult {
  color: #000;
  font-size: 14px;
}

/* FOOTER */
footer {
  background: #0d1b2a;
  color: #ccc;
  text-align: center;
  padding: 15px;
  font-size: 13px;
}

/* MOBILE FIX */
@media (max-width: 600px) {
  .navbar nav {
    display: none;
  }

  .overlay h1 {
    font-size: 26px;
  }
}