/* ===========================
   SIDEBAR BASE (DESKTOP)
=========================== */

#sidebar {
  width: 240px;
  background: #0a0f1c;
  color: #d9eaff;
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  box-shadow: 4px 0 12px rgba(0, 0, 0, 0.25);

  /* Hide scrollbar */
  scrollbar-width: none; /* Firefox */
}

#sidebar::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}


.sidebar-logo {
  margin-bottom: 24px;
}

.logo-main {
  display: block;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #66ccff;
}

.logo-sub {
  display: block;
  font-size: 11px;
  opacity: 0.7;
  margin-top: 4px;
  color: #99ccff;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: auto;
}

.nav-btn {
  text-align: left;
  padding: 8px 10px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s ease, transform 0.1s ease;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(2px);
}

.nav-btn.active {
  background: #004c99;
  color: #ffffff;
  font-weight: 600;
}

/* Kramer Icon */
.sidebar-icon-container {
  margin: 20px 0 12px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#sidebar-kramer-icon {
  width: 90%;
  max-width: 200px;
  border-radius: 50%;
  box-shadow: 0 0 12px #66ccff;
  background: #001122;
  padding: 4px;
  border: 5px solid #66ccff;
}

/* Footer */
.sidebar-footer {
  font-size: 11px;
  opacity: 0.7;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 12px;
  color: #99ccff;
}

.sidebar-footer .disclaimer {
  font-style: italic;
}

/* ===========================
   MOBILE SIDEBAR BEHAVIOR
=========================== */

@media (max-width: 768px) {

  /* Sidebar fully hidden until toggled */
  #sidebar {
    display: none; /* ← CRITICAL FIX */
    position: fixed;
    left: -240px;
    top: 0;
    width: 240px;
    height: 100vh;
    background: #0a0f1c;
    overflow-y: auto;
    transition: left 0.3s ease;
    z-index: 1000;
    padding: 16px 12px;
  }

  #sidebar.open {
    display: flex; /* ← becomes visible */
    left: 0;
  }

  /* Shrink Kramer icon to 1/3 size */
  #sidebar-kramer-icon {
    width: 30%;
    max-width: 80px;
  }

  /* Remove extra spacing so mobile layout is tighter */
  .sidebar-nav {
    margin-bottom: 0;
  }

  .sidebar-icon-container {
    margin-top: 8px;
    margin-bottom: 8px;
  }

  .sidebar-footer {
    margin-top: auto;
    padding-top: 8px;
  }
}

@media (min-width: 769px) {
  #sidebar {
    scrollbar-width: none;
  }
  #sidebar::-webkit-scrollbar {
    display: none;
  }
}

/* Dropdown container */
.sidebar-dropdown {
  width: 100%;
}

/* Parent button */
.dropdown-toggle {
  width: 100%;
  text-align: left;
  font-weight: 600;
  cursor: pointer;
}

/* Sub-menu container */
.dropdown-menu {
  display: none;
  flex-direction: column;
  margin-left: 12px;
  margin-top: 4px;
}

/* Sub-menu buttons */
.nav-sub-btn {
  background: none;
  border: none;
  color: var(--sidebar-text);
  padding: 6px 12px;
  text-align: left;
  cursor: pointer;
  font-size: 0.9rem;
  opacity: 0.85;
}

.nav-sub-btn:hover {
  opacity: 1;
}

/* Active highlight */
.nav-sub-btn.active {
  font-weight: 700;
  opacity: 1;
  color: var(--accent-color);
}