/* 3xx Theme Overrides */
.theme-3xx {
  --primary-bg: rgba(220, 180, 255, 0.35);
  --primary-border: rgba(255, 255, 255, 0.4);
  --primary-text: #3a026b;
  --link-bg-light: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(230, 200, 255, 0.8));
  --link-bg-light-hover: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(220, 180, 255, 0.9));
  --link-text: #4a0387;
  --link-border: rgba(150, 100, 200, 0.6);
  --link-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.9), 0 3px 5px rgba(0, 0, 0, 0.15);
  --link-shadow-hover: inset 0 1px 2px rgba(255, 255, 255, 0.9), 0 4px 7px rgba(0, 0, 0, 0.25);
  --menu-bg: rgba(220, 180, 255, 0.35);
  --menu-border: rgba(255, 255, 255, 0.4);
  --shadow: 0 4px 25px rgba(50, 0, 120, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

@media (prefers-color-scheme: dark) {
  .theme-3xx {
    --primary-bg: rgba(40, 30, 50, 0.9);
    --primary-border: rgba(255, 255, 255, 0.2);
    --primary-text: #e0e0e0;
    --link-bg-light: linear-gradient(to bottom, rgba(60, 50, 70, 0.85), rgba(70, 60, 80, 0.8));
    --link-bg-light-hover: linear-gradient(to bottom, rgba(80, 70, 90, 1), rgba(90, 80, 100, 0.85));
    --link-text: #d1a1ff;
    --link-border: rgba(150, 130, 180, 0.5);
    --link-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.9), 0 3px 5px rgba(0, 0, 0, 0.4);
    --link-shadow-hover: inset 0 1px 2px rgba(0, 0, 0, 0.9), 0 4px 7px rgba(0, 0, 0, 0.5);
    --menu-bg: rgba(40, 30, 50, 0.9);
    --menu-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 4px 25px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
}

/* 4xx Theme Overrides */
.theme-4xx {
  --primary-bg: rgba(255, 200, 200, 0.35);
  --primary-border: rgba(255, 255, 255, 0.4);
  --primary-text: #6b0202;
  --link-bg-light: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(255, 200, 200, 0.8));
  --link-bg-light-hover: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(255, 180, 180, 0.9));
  --link-text: #870303;
  --link-border: rgba(200, 100, 100, 0.6);
  --link-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.9), 0 3px 5px rgba(0, 0, 0, 0.15);
  --link-shadow-hover: inset 0 1px 2px rgba(255, 255, 255, 0.9), 0 4px 7px rgba(0, 0, 0, 0.25);
  --menu-bg: rgba(255, 200, 200, 0.35);
  --menu-border: rgba(255, 255, 255, 0.4);
  --shadow: 0 4px 25px rgba(120, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

@media (prefers-color-scheme: dark) {
  .theme-4xx {
    --primary-bg: rgba(50, 30, 30, 0.9);
    --primary-border: rgba(255, 255, 255, 0.2);
    --primary-text: #e0e0e0;
    --link-bg-light: linear-gradient(to bottom, rgba(70, 50, 50, 0.85), rgba(80, 60, 60, 0.8));
    --link-bg-light-hover: linear-gradient(to bottom, rgba(90, 70, 70, 1), rgba(100, 80, 80, 0.85));
    --link-text: #ffA1a1;
    --link-border: rgba(180, 130, 130, 0.5);
    --link-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.9), 0 3px 5px rgba(0, 0, 0, 0.4);
    --link-shadow-hover: inset 0 1px 2px rgba(0, 0, 0, 0.9), 0 4px 7px rgba(0, 0, 0, 0.5);
    --menu-bg: rgba(50, 30, 30, 0.9);
    --menu-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 4px 25px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
}

/* Default light theme */
:root {
  --primary-bg: rgba(180, 220, 255, 0.35);
  --primary-border: rgba(255, 255, 255, 0.4);
  --primary-text: #023a6b;
  --link-bg-light: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(200, 230, 255, 0.8));
  --link-bg-light-hover: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(180, 220, 255, 0.9));
  --link-text: #034a87;
  --link-border: rgba(100, 150, 200, 0.6);
  --link-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.9), 0 3px 5px rgba(0, 0, 0, 0.15);
  --link-shadow-hover: inset 0 1px 2px rgba(255, 255, 255, 0.9), 0 4px 7px rgba(0, 0, 0, 0.25);
  --menu-bg: rgba(180, 220, 255, 0.35);
  --menu-border: rgba(255, 255, 255, 0.4);
  --shadow: 0 4px 25px rgba(0, 50, 120, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  --menu-logo-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.8), inset 0 -2px 3px rgba(0, 0, 0, 0.2);
  --menu-hover-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.6);
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary-bg: rgba(30, 30, 40, 0.9); /* Darker background, with more opacity for that frosted glass effect */
    --primary-border: rgba(255, 255, 255, 0.2);
    --primary-text: #e0e0e0; /* Lighter text for dark theme */
    --link-bg-light: linear-gradient(to bottom, rgba(50, 50, 60, 0.85), rgba(60, 60, 70, 0.8)); 
    --link-bg-light-hover: linear-gradient(to bottom, rgba(70, 70, 80, 1), rgba(80, 80, 90, 0.85));
    --link-text: #a1caff; /* Light blue for contrast */
    --link-border: rgba(130, 150, 180, 0.5); /* Softer border */
    --link-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.9), 0 3px 5px rgba(0, 0, 0, 0.4);
    --link-shadow-hover: inset 0 1px 2px rgba(0, 0, 0, 0.9), 0 4px 7px rgba(0, 0, 0, 0.5);
    --menu-bg: rgba(30, 30, 40, 0.9); /* Dark frosted glass */
    --menu-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 4px 25px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    --menu-logo-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.8), inset 0 -2px 3px rgba(0, 0, 0, 0.7);
    --menu-hover-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4); /* Slight white shadow for high contrast */
  }
}

/* Menu container */
.m_menu {
  position: fixed;
  box-sizing: border-box;
  top: 0;
  left: 0;
  width: 100%;
  -webkit-backdrop-filter: blur(2px) saturate(180%);
  backdrop-filter: blur(2px) saturate(180%);
  background: var(--menu-bg);
  border-bottom: 1px solid var(--primary-border);
  border-radius: 0 0 20px 20px;
  box-shadow: var(--shadow);
  padding: 12px 20px;
  z-index: 999;
}

.m_menu_top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.m_menu_logo {
  height: 49px;
  width: 49px;
  border-radius: 8px;
  box-shadow: var(--menu-logo-shadow);
}

.m_menu_title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--primary-text);
  text-shadow: var(--menu-hover-shadow);
  flex: 1;
  margin-left: 12px;
}

.m_menu_hamburger {
  font-family: 'Material Symbols Outlined';
  font-size: 32px;
  cursor: pointer;
  color: var(--link-text);
  text-shadow: var(--menu-hover-shadow);
  display: inline-block; /* always shown */
}

.m_menu_buttons {
  display: none !important; /* hidden on all devices */
}

.m_submenu_label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-text);
  opacity: 0.6;
  text-transform: uppercase;
  margin: 8px 4px 4px 8px;
  letter-spacing: 0.05em;
}

.m_submenu_separator {
  height: 1px;
  background: var(--primary-border);
  margin: 12px 8px;
  opacity: 0.5;
}

.m_nav_btn {
  font-family: 'Material Symbols Outlined';
  background: var(--link-bg-light);
  border: 1px solid var(--link-border);
  color: var(--link-text);
  padding: 4px 8px;
  margin: 4px;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: var(--link-shadow);
  user-select: none;
  font-size: 20px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.m_nav_btn:hover:not(.m_nav_disabled) {
  background: var(--link-bg-light-hover);
  box-shadow: var(--link-shadow-hover);
}

.m_nav_disabled {
  opacity: 0.3;
  cursor: default;
  filter: grayscale(1);
}

.m_menu_buttons_inner {
  display: flex;
  flex-wrap: nowrap;
  flex: 1;
  transition: transform 0.3s ease;
}

.m_menu_buttons a {
  white-space: nowrap;
  flex-shrink: 0;
}

.m_menu_buttons a,
.m_menu_mobile a {
  box-sizing: border-box;
  background: var(--link-bg-light);
  border: 1px solid var(--link-border);
  padding: 8px 14px;
  margin: 4px;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--link-text);
  cursor: pointer;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: var(--link-shadow);
  transition: all 0.2s ease;
  text-decoration: none; /* Remove default underline */
}

.m_menu_buttons a:hover,
.m_menu_mobile a:hover {
  background: var(--link-bg-light-hover);
  box-shadow: var(--link-shadow-hover);
}

/* Mobile menu */
.m_menu_mobile {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  box-sizing: border-box; /* Ensure padding doesn't overflow */
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-in-out, margin-top 0.5s ease-in-out;
  margin-top: 0;
}

.m_menu_mobile--open {
  max-height: 80vh; /* Allow it to be large but not necessarily fullscreen if no submenu */
  overflow-y: auto;
  margin-top: 12px;
}

/* Fullscreen mode when submenu is present */
.m_menu--fullscreen {
  height: 100vh;
  border-radius: 0;
  display: flex;
  flex-direction: column;
}

.m_menu--fullscreen .m_menu_mobile--open {
  max-height: none;
  flex: 1;
  overflow-y: auto;
  padding-bottom: 40px; /* extra space at bottom */
}

.m_menu_mobile a {
  text-align: left;
  margin: 4px 0;
}

.m_menu_subtitle {
  font-size: 1rem !important;
  color: #888;
  opacity: 0.7;
  margin-top: 2px;
  line-height: 1;
}

/* Lien actif = texte statique avec espace conservé */
.m_menu_buttons a.m_disabled,
.m_menu_mobile a.m_disabled {
  background: none !important;
  border: none !important;
  box-shadow: none !important;
  color: var(--primary-text) !important;
  cursor: default !important;
  pointer-events: none !important;
  font-weight: 600;
  text-decoration: none;
}

/* Empêche tout effet hover sur le lien actif */
.m_menu_buttons a.m_disabled:hover,
.m_menu_mobile a.m_disabled:hover {
  background: none !important;
  box-shadow: none !important;
}

/* Greyed out buttons */
.m_menu_buttons a.m_greyed,
.m_menu_mobile a.m_greyed {
  opacity: 0.5;
  filter: grayscale(1);
  cursor: not-allowed !important;
}

.m_menu_buttons a.m_greyed:hover,
.m_menu_mobile a.m_greyed:hover {
  background: var(--link-bg-light) !important;
  box-shadow: var(--link-shadow) !important;
}