/* ---------- GLOBAL ---------- */
body {
  overflow-x: hidden; /* Prevent sideways scroll */
}

/* Scale buttons */
.glassy-btn {
  font-size: 20px;
  padding: 12px 16px;
}

/* Overlay adjustments */
.overlay {
  width: 33%;
  padding: 30px;
}

.overlay h1 {
  font-size: 2.2rem;
}

.overlay p {
  font-size: 1.1rem;
}

/* Caption default */
.caption {
  font-size: 0.9rem;
  max-width: 90%;
  right: 10px;
  text-align: right;
}

/* Nav default */
nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- TABLET (<= 900px) ---------- */
@media (max-width: 900px) {
  .overlay {
    width: 60%;
    padding: 20px;
  }

  .overlay h1 { font-size: 1.6rem; }
  .overlay p { font-size: 1rem; }

  .glassy-btn {
    font-size: 16px;
    padding: 10px 14px;
  }
}

/* ---------- MOBILE (<= 600px) ---------- */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.2rem;
  }

  nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }

  .overlay {
    width: 85%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
  }

  .overlay h1 {
    font-size: 1.4rem;
  }

  .overlay p {
    font-size: 0.9rem;
  }

  .glassy-btn {
    font-size: 14px;
    padding: 8px 12px;
  }

  .caption {
    font-size: 0.8rem;
    text-align: center;
    right: 50%;
    transform: translateX(50%);
    max-width: 95%;
  }

  .prev, .next {
    font-size: 24px;
    padding: 10px;
  }
}


/* Hamburger button hidden on desktop */
.hamburger {
  display: none;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #2c3e50;
}

/* Default nav on desktop */
nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0.5rem 0 0;
  padding: 0;
}

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

  nav {
    display: none; /* hide nav by default */
  }

  nav.open {
    display: block;
    background: #fff;
    margin-top: 0.5rem;
  }

  nav ul {
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
  }

  nav a {
    display: block;
    padding: 0.5rem;
  }
}