@import "styles.css";

/* Base navigation shell */
.nav-shell {
    background-color: var(--ink);
  position: relative;
}

/* Main navigation panel */
.main-nav {
  background-color: var(--ink);
  display: flex;
  align-items: center;
}

/* Remove list styling and arrange items in a row */
.menu {
    list-style: none;
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
}

/* Individual list items */
.menu li {
    position: relative; /* Crucial anchor point for absolute submenu positioning */
}

/* Ensure buttons match standard link styling */
.menu a:not(.btn-enquire), 
.dropdown-toggle {
  display: block;
  padding: 15px 20px;
  color: var(--on-ink);
  text-decoration: none;
  background: none;
  border: none;
  font-size: 16px;
  font-family: var(--font-body);
  font-weight: 600;
  margin-left: 0rem;
  transition: var(--transition);
  cursor: pointer;
  text-align: left;
}

.menu a:not(.btn-enquire):hover,
.dropdown-toggle:hover,
.dropdown-toggle:focus {
  background-color: var(--ink);
}

.arrow {
  font-size: 10px;
  margin-left: 5px;
  display: inline-block;
  transition: transform 0.2s ease;
}

/* Flip the arrow indicator upside-down when active */
.dropdown-toggle[aria-expanded="true"] .arrow {
  transform: rotate(180deg);
}


/* --- Submenu Layout (Desktop Default) --- */
.submenu {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  left: 0;
  top: 100%;
  background-color: var(--ink-light);
  min-width: 200px;
  list-style: none;
  margin: 0;
  padding: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0px 8px 16px rgba(0,0,0,0.2);
  transition: opacity 0.2s ease, visibility 0.2s ease;
  font-size: 14px;
  font-family: var(--font-body);
  font-weight: 500;
  margin-left: 0rem;
}

.submenu li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

/* Make submenu apparent when toggled */
.dropdown-toggle[aria-expanded="true"] + .submenu {
  opacity: 1;
  visibility: visible;
}

.submenu a {
    text-decoration: none;
    color: var(--surface);
    transition: var(--transition);
    font-size: 12px;
    font-family: var(--font-body);
    font-weight: 400;
    margin-left: 0;
}

/* Pill button */
.btn-enquire {
    background-color: var(--primary);
    color: var(--on-primary);
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-family: var(--font-body);
    display: inline-block;
    transition: var(--transition);
}

.btn-enquire:hover {
    background-color: var(--primary-deep);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 112, 143, 0.25);
}


/* --- Mobile Interface Trigger Menu Button --- */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.hamburger {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--bg);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 3px;
  background: var(--bg);
  left: 0;
}
.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }



/* --- Mobile Breakpoint Engine (< 768px) --- */
@media (max-width: 767px) {

  ul,
  ol {
    padding-left: 0rem;
  }
  
  .nav-shell {
    /* Let absolutely positioned .main-nav be relative to <header>, not .nav-shell */
    position: static;
  }

  .mobile-toggle {
    display: block; /* Unhide the burger icon buttons */
    z-index: 10;
  }

  .main-nav {
    display: none; /* Keep navigation panel closed initially */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: auto; /* Span full width of <header> (the containing block) */
    z-index: 999;
    background-color: var(--ink);
    border-top: 1px solid var(--ink-light);
  }

  /* Show nav panel when parent states open */
  .mobile-toggle[aria-expanded="true"] + .main-nav {
    display: block;
  }

  .menu {
    flex-direction: column; /* Stack vertically */
    align-items: stretch;
  }

  .menu > li {
    width: 100%;
    text-align: left;
  }

  .menu > li > a:not(.btn-enquire),
  .dropdown-toggle {
    text-align: left;
    margin-left: 0;
    display: flex;
    align-items: center;
  }

  .menu > li.dropdown .dropdown-toggle {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 6px;
  }

  /* Structural adjustment for nested panels */
  .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    display: none; /* Rely entirely on basic display flex rule overrides inside mobile viewports */
    background-color: var(--ink-light);
    box-shadow: none;
    padding-left: 0;
    text-align: left;
  }

  .submenu a {
    text-align: left;
    display: flex;
    align-items: center;
  }

  .dropdown-toggle[aria-expanded="true"] + .submenu {
    display: block;
  }
}