/* ===== GLOBAL STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #000;
  color: #fff;
  text-align: center;
}

/* ===== NAVBAR ===== */
.navbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 15px 40px;
  background: #050505;
  border-bottom: 1px solid #222;
  position: sticky;
  top: 0;
  z-index: 1000;
  max-width: 1400px; /* prevent stretching on very large screens */
  width: 90%;
  margin: 0 auto;
}

.logo {
  font-size: 26px;
  font-weight: bold;
}

.logo span {
  color: #9b5cff;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 25px;
}

.nav-links a {
  text-decoration: none;
  color: #fff;
  font-size: 16px;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #9b5cff;
}

.copy-btn {
  background: #9b5cff;
  border: none;
  padding: 8px 15px;
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.copy-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 15px rgba(155, 92, 255, 0.5);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 60px 20px;
}

.hero h1 {
  font-size: 60px;
  line-height: 1.1;
}

.hero span {
  color: #9b5cff;
}

/* ===== BOX ===== */
.box {
  border: 1px solid #444;
  border-radius: 15px;
  margin: 30px auto;
  padding: 30px;
  width: 80%;
  max-width: 700px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(155, 92, 255, 0.3);
}

.box h2 {
  color: #9b5cff;
  margin-bottom: 15px;
}

select, button {
  padding: 10px;
  margin: 10px 0;
  width: 200px;
  border-radius: 5px;
  border: none;
  transition: transform 0.3s;
}

button {
  background: #9b5cff;
  color: #fff;
  cursor: pointer;
}

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

/* ===== FOOTER ===== */
.footer {
  margin-top: 60px;
  padding: 25px;
  background: #050505;
  border-top: 1px solid #222;
  text-align: center;
  font-size: 14px;
  color: #bbb;
  line-height: 1.6;
  max-width: 1400px;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

/* ===== RESPONSIVE STYLES ===== */

/* Large Desktop (≥1600px) */
@media (min-width: 1600px) {
  .navbar, .hero, .box, .footer {
    max-width: 1400px;
    width: 85%;
    margin: 0 auto;
  }

  .hero h1 {
    font-size: 72px;
  }

  .nav-links a {
    font-size: 18px;
  }

  select, button {
    width: 220px;
  }
}

/* Laptop/Desktop (992px - 1600px) */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 44px;
  }

  .box {
    width: 90%;
    padding: 25px;
  }

  select, button {
    width: 180px;
  }
}

/* Tablet (≤768px) */
@media (max-width: 768px) {
  .navbar {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 15px;
    padding: 15px 20px;
  }

  .nav-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
  }

  .hero h1 {
    font-size: 36px;
  }

  select, button {
    width: 100%;
    max-width: 280px;
  }

  .box {
    width: 95%;
    padding: 20px;
  }
}

/* Mobile (≤480px) */
@media (max-width: 480px) {
  .logo {
    font-size: 22px;
  }

  .nav-links a {
    font-size: 14px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .box {
    padding: 15px;
  }

  .footer {
    font-size: 13px;
    padding: 20px 15px;
  }

  select, button {
    width: 100%;
    max-width: 100%;
  }
}