/* --- HEADER CONTAINER --- */
header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);

  /* Dimensions */
  width: 95%;
  max-width: 900px;
  padding: 10px 25px;

  /* Layout */
  display: flex;
  align-items: center;
  justify-content: space-between;

  /* Glassmorphism */
  border-radius: 50px;
  background: rgba(20, 20, 22, 0.7);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);

  z-index: 1000;
  transition: all 0.3s ease;
}

body.light-theme header {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* --- LEFT SECTION (Logo) --- */
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.header-left img.logo {
  height: 32px;
  width: auto;
  display: block;
  transform: scale(1.5);
  margin-right: 8px;
  margin-left: 5px;
  filter: drop-shadow(0px 0px 1px rgba(255, 255, 255, 0.8));
}

body.light-theme .header-left img.logo {
  filter: none;
}

.header-left h1 {
  font-family: "Oswald", sans-serif;
  color: var(--accent-gold);
  font-size: 1.4rem;
  margin: 0;
  line-height: 1;
  white-space: nowrap;
}

/* --- NAVIGATION --- */
.header-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.header-nav a {
  font-family: "Oswald", sans-serif;
  text-transform: uppercase;
  font-size: 1.1rem;
  letter-spacing: 1px;
  color: var(--text);
  opacity: 0.6;
  position: relative;

  /* Layout for Icon + Text */
  display: flex;
  align-items: center;
  gap: 10px; /* Space between icon and text */

  transition: all 0.3s;

  /* Cursor & Click Area */
  padding: 6px 12px;
  border-radius: 8px;
}

/* Icon Styling (Desktop) */
.header-nav a i {
  font-size: 1rem;
  margin-bottom: 2px; /* Visual alignment fix */
}

body.light-theme .header-nav a {
  color: #000;
  opacity: 0.7;
}

.header-nav a:hover {
  opacity: 1;
  color: var(--text);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

body.light-theme .header-nav a:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Active State */
.header-nav a.active {
  opacity: 1;
  color: var(--accent-gold) !important;
}

.header-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--accent-gold);
  box-shadow: 0 0 8px var(--accent-gold);
}

/* --- THEME TOGGLE --- */
#theme-toggle {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0.8;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition:
    color 0.3s,
    transform 0.2s;
  border-radius: 50%;
}

#theme-toggle:hover {
  opacity: 1;
  color: var(--accent-gold);
  transform: rotate(15deg);
}

/* --- RESPONSIVE (MOBILE) --- */
@media (max-width: 768px) {
  header {
    width: 92%;
    top: 15px;
    padding: 8px 15px;
  }

  .header-left {
    gap: 8px;
  }

  .header-left img.logo {
    height: 28px;
    transform: scale(1.2);
  }

  .header-left h1 {
    display: none;
  }

  /* Centered Nav on Mobile */
  .header-nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    gap: 1.5rem;
    margin: 0;
  }

  /* Hide Text on Mobile */
  .header-nav a span {
    display: none;
  }

  /* Ensure Icon is visible and larger on Mobile */
  .header-nav a i {
    display: block;
    font-size: 1.3rem;
    margin-bottom: 0;
  }

  /* Circle buttons on mobile */
  .header-nav a {
    padding: 8px;
    border-radius: 50%;
    gap: 0;
  }

  .header-nav a.active::after {
    bottom: 2px;
    left: 20%;
    right: 20%;
  }
}