/* ===== Variables ===== */
:root {
  --color-primary: #1f2937;
  --color-accent: #2563eb;
  --color-bg-menu: #1f2937;
  --color-bg-submenu: #374151;
  --color-bg-submenu-2: #4b5563;
  --color-text: #f9fafb;
  --transition-speed: 0.2s;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #111827;
  background: var(--color-bg-menu);
}

/* ===== Header ===== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #007700;
  padding: 0 1.5rem;
  position: relative;
}

.logo {
  color: var(--color-text);
  font-weight: bold;
  font-size: 1.3rem;
  padding: 1rem 0;
}

/* ===== Botón hamburguesa ===== */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
}

/* ===== Menú principal ===== */
.main-nav ul.menu {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.menu-item {
  position: relative;
}

.menu-item > a {
  display: block;
  padding: 1rem 1.2rem;
  color: #FFCC00;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-speed);
}

.menu-item > a:hover,
.menu-item.open > a {
  background: var(--color-accent);
}

/* Flecha indicadora de submenú */
.has-submenu > a.submenu-toggle::after {
  content: "▾";
  margin-left: 0.4rem;
  font-size: 0.7rem;
}

.submenu .has-submenu > a.submenu-toggle {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.submenu .has-submenu > a.submenu-toggle::after {
  content: "▸";
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* ===== Submenú nivel 1 ===== */
.submenu {
  list-style: none;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 100%;
  left: 0;
  width: 210px;
  background: var(--color-bg-submenu);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease, visibility var(--transition-speed);
  z-index: 100;
}

.has-submenu.open > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu-item,
.submenu > li {
  position: relative;
}

.submenu-item > a,
.submenu > li > a {
  display: block;
  padding: 0.65rem 1.1rem;
  color: #FFFF00;
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 1.35;
  white-space: normal;
  overflow-wrap: break-word;
  transition: background var(--transition-speed);
}

.submenu-item > a:hover,
.submenu-item.open > a,
.submenu > li > a:hover {
  background: var(--color-accent);
}

/* ===== Submenú nivel 2 (se abre hacia la derecha) ===== */
.submenu-level-2 {
  top: 0;
  left: 100%;
  width: 190px;
  background: var(--color-bg-submenu-2);
}

/* Si no cabe a la derecha de la pantalla, se voltea hacia el otro lado (JS agrega .open-left) */
.has-submenu.open-left > .submenu {
  left: auto;
  right: 0;
}

.submenu-item.open-left > .submenu-level-2 {
  left: auto;
  right: 100%;
}

/* ===== Contenido de ejemplo ===== */
.content {
  padding: 3rem 2rem;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

/* ===================================================
   RESPONSIVE: menú tipo acordeón para móvil
   =================================================== */
@media (max-width: 768px) {

  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-bg-menu);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) ease;
  }

  .main-nav.open {
    max-height: 100vh;
    overflow-y: auto;
  }

  .main-nav ul.menu {
    flex-direction: column;
  }

  .menu-item > a {
    padding: 0.9rem 1.2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  /* En móvil los submenús se despliegan en flujo normal, no flotando */
  .submenu,
  .submenu-level-2 {
    position: static;
    width: 100%;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) ease;
    display: block;
  }

  .menu-item.open > .submenu,
  .submenu-item.open > .submenu-level-2 {
    max-height: 500px;
  }

  .submenu-item > a {
    padding-left: 2.2rem;
  }

  .submenu-level-2 .submenu-item > a,
  .submenu-level-2 li > a {
    padding-left: 3.2rem;
  }
}