/* --- Global Styles --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #fff;
  overflow-x: hidden;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

.container {
  width: 90%;
  margin: 0 auto;
}

/* --- Fixed Navbar Layout --- */
.navbar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 5%;
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 3000; /* লোগো আর হেডারকে সবার উপরে রাখার জন্য */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 3100; /* মেনুর উপরে লোগো দেখাবে */
}

.logo img {
  width: 50px;
}

.logo span {
  font-size: 20px;
  font-weight: bold;
  color: #0b5b67;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  transition: 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ff6b35;
}

.auth-buttons {
  display: flex;
}

.btn-contact {
  background: #ff6b35;
  color: white;
  border: none;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

/* --- Mobile Menu Toggle Icon --- */
.menu-toggle {
  display: none;
  font-size: 28px;
  cursor: pointer;
  color: #0b5b67;
  position: relative;
  z-index: 3100; /* আইকন মেনুর উপরে থাকবে */
}

/* ===============================
   RESPONSIVE NAVBAR
================================ */

/* Tablet */
@media (max-width: 992px) {
  .nav-links {
    gap: 20px;
  }

  .logo span {
    font-size: 18px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  /* hamburger icon show */
  .menu-toggle {
    display: block;
  }

  /* contact button hide (optional) */
  .auth-buttons {
    display: none;
  }

  /* mobile menu style */
  .nav-links {
    position: fixed;
    top: 50px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);

    background: #ffffff;

    flex-direction: column;
    align-items: center;
    justify-content: start;

    gap: 25px;
    padding-top: 40px;

    transition: 0.4s ease;
    z-index: 2000;
  }

  /* active হলে menu slide করবে */
  .nav-links.active {
    left: 0;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    font-size: 18px;
    display: block;
    padding: 12px 0;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .logo img {
    width: 40px;
  }

  .logo span {
    font-size: 16px;
  }

  .navbar {
    padding: 12px 4%;
  }
}