/* ============================================
   itssev2026.css — Versión 3.1
   MENÚ DESPLEGABLE MODERNO Y RESPONSIVO
   Fondo blanco · Naranja suave · Negro sans-serif
   Compatible con dispositivos móviles
   ============================================ */

/* --- Variables CSS --- */
:root {
  --menu-font: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --menu-bg: #ffffff;
  --menu-bg-sub: #ffffff;
  --menu-item-bg: #ffe8cc;
  --menu-item-bg-hover: #ffd9a8;
  --menu-text: #1a1a1a;
  --menu-text-hover: #000000;
  --menu-accent: #e67e22;
  --menu-accent-light: rgba(230, 126, 34, 0.12);
  --menu-border: rgba(0, 0, 0, 0.07);
  --menu-shadow: 0 8px 30px rgba(0, 0, 0, 0.10), 0 2px 6px rgba(0, 0, 0, 0.05);
  --menu-radius: 10px;
  --menu-radius-sm: 6px;
  --menu-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --menu-height: 48px;
  --hamburger-size: 44px;
}

/* --- Reset base del menú --- */
#itsmenu *,
#itsmenu *::before,
#itsmenu *::after {
  box-sizing: border-box;
  margin: 0;
  /* NO poner padding:0 aquí, anularía el padding de todos los hijos */
}

#itsmenu {
  font-family: var(--menu-font);
  position: relative;
  z-index: 1000;
}

/* --- Barra principal --- */
.vsmenu {
  background: var(--menu-bg);
  border-bottom: 1px solid var(--menu-border);
}

/* --- Lista principal (horizontal en desktop) --- */
ul.vsnav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 8px;
  max-width: 1280px;
  margin: 1 auto;
  padding: 2px 2px;
}

/* --- Elementos de primer nivel --- */
ul.vsnav > li {
  position: relative;
}

ul.vsnav > li > a {
  display: flex !important;
  align-items: center;
  gap: 6px;
  padding: 4px 8px !important;
  height: auto !important;
  min-height: auto !important;
  max-height: none !important;
  color: var(--menu-text) !important;
  text-decoration: none;
  font-size: 0.88rem !important;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  background: var(--menu-item-bg) !important;
  border-radius: var(--menu-radius-sm);
  transition: color var(--menu-transition), background var(--menu-transition), box-shadow var(--menu-transition);
  position: relative;
  box-sizing: border-box !important;
}

ul.vsnav > li > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 2.5px;
  background: var(--menu-accent);
  border-radius: 2px 2px 0 0;
  transform: scaleX(0);
  transition: transform var(--menu-transition);
}

ul.vsnav > li:hover > a,
ul.vsnav > li:focus-within > a {
  color: var(--menu-text-hover);
  background: var(--menu-item-bg-hover);
  box-shadow: 0 2px 8px rgba(230, 126, 34, 0.18);
}

ul.vsnav > li:hover > a::after,
ul.vsnav > li:focus-within > a::after {
  transform: scaleX(1);
}

/* --- Flecha indicadora --- */
.flecha {
  font-size: 0.5rem;
  opacity: 0.35;
  transition: transform var(--menu-transition), opacity var(--menu-transition);
  display: inline-block;
  margin-left: 4px;
}

li:hover > a > .flecha {
  opacity: 0.7;
}

/* En submenús, la flecha apunta a la derecha */
ul.vsnav ul .flecha {
  margin-left: auto;
  font-size: 0.45rem;
}

/* --- Submenús (nivel 2) --- */
ul.vsnav ul {
  list-style: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: var(--menu-bg-sub);
  border: 1px solid var(--menu-border);
  border-radius: var(--menu-radius);
  box-shadow: var(--menu-shadow);
  padding: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--menu-transition), transform var(--menu-transition), visibility var(--menu-transition);
  z-index: 100;
}

ul.vsnav li:hover > ul,
ul.vsnav li:focus-within > ul {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* --- Elementos de submenú --- */
ul.vsnav ul li {
  position: relative;
}

ul.vsnav ul a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 5px;
  color: var(--menu-text);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  border-radius: var(--menu-radius-sm);
  background: var(--menu-item-bg);
  transition: background var(--menu-transition), color var(--menu-transition), padding-left var(--menu-transition);
}

ul.vsnav ul a:hover,
ul.vsnav ul a:focus-visible {
  background: var(--menu-item-bg-hover);
  color: var(--menu-text-hover);
  padding-left: 22px;
}

/* Indicador lateral naranja en hover */
ul.vsnav ul a::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 16px;
  background: var(--menu-accent);
  border-radius: 3px;
  transition: transform var(--menu-transition);
}

ul.vsnav ul a:hover::before,
ul.vsnav ul a:focus-visible::before {
  transform: translateY(-50%) scaleY(1);
}

/* --- Submenús nivel 3+ (se abren a la derecha) --- */
ul.vsnav ul ul {
  top: -8px;
  left: 100%;
  margin-left: 6px;
  transform: translateX(8px);
}

ul.vsnav ul li:hover > ul,
ul.vsnav ul li:focus-within > ul {
  transform: translateX(0);
}

/* Separador sutil entre items del submenú */
ul.vsnav ul li + li {
  margin-top: 3px;
}


/* ============================================
   HAMBURGER TOGGLE (móvil)
   Tres líneas grandes + texto "MENÚ"
   ============================================ */

.menu-toggle {
  display: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
  margin: 8px 16px;
  align-items: center;
  gap: 10px;
  background: var(--menu-item-bg);
  border-radius: var(--menu-radius-sm);
  padding: 10px 16px;
  transition: background 0.25s ease;
}

.menu-toggle:hover,
.menu-toggle:active {
  background: var(--menu-item-bg-hover);
}

.menu-toggle input {
  display: none;
}

/* Contenedor de las tres líneas */
#itsmenu .menu-toggle .hamburger-lines {
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  width: 28px !important;
  height: 22px !important;
  pointer-events: none;
  flex-shrink: 0;
}

#itsmenu .menu-toggle .hamburger-lines span {
  display: block !important;
  width: 28px !important;
  height: 3px !important;
  min-height: 3px !important;
  background: var(--menu-text) !important;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  pointer-events: none;
  padding: 0 !important;
  margin: 0 !important;
  flex-shrink: 0 !important;
}

/* Texto "MENÚ" */
#itsmenu .menu-toggle .menu-label {
  font-family: var(--menu-font) !important;
  font-size: 0.82rem !important;
  font-weight: 700 !important;
  color: var(--menu-text) !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  pointer-events: none;
  line-height: 1 !important;
  background: none !important;
  background-color: transparent !important;
  height: auto !important;
  width: auto !important;
  min-height: 0 !important;
  display: inline !important;
  border: none !important;
  border-bottom: none !important;
  text-decoration: none !important;
}

/* Animación X al abrir */
.menu-toggle input:checked ~ .hamburger-lines span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle input:checked ~ .hamburger-lines span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.menu-toggle input:checked ~ .hamburger-lines span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* ============================================
   RESPONSIVE — MÓVIL (< 900px)
   ============================================ */
@media (max-width: 900px) {

  .menu-toggle {
    display: flex;
  }

  .vsmenu {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  }

  ul.vsnav {
    flex-direction: column;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    gap: 0;
    transition: max-height 0.4s ease, padding 0.3s ease;
  }

  .menu-toggle input:checked ~ .vsnav,
  .menu-toggle:has(input:checked) + ul.vsnav,
  #menu-check:checked ~ ul.vsnav,
  #menu-check:checked ~ .vsmenu ul.vsnav {
    max-height: 100vh;
    overflow-y: auto;
    padding: 8px 0 16px;
  }

  ul.vsnav > li {
    border-bottom: 1px solid var(--menu-border);
  }

  ul.vsnav > li > a {
    height: auto;
    padding: 16px 20px;
    font-size: 0.92rem;
    border-radius: 0;
    background: var(--menu-item-bg);
  }

  ul.vsnav > li:hover > a,
  ul.vsnav > li.open > a {
    background: var(--menu-item-bg-hover);
  }

  ul.vsnav > li > a::after {
    display: none;
  }

  /* Submenús en móvil */
  ul.vsnav ul {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: #fff7ef;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.25s ease;
  }

  ul.vsnav li:hover > ul,
  ul.vsnav li:focus-within > ul,
  ul.vsnav li.open > ul {
    max-height: 2000px;
    padding: 4px 0;
  }

  ul.vsnav ul ul {
    margin-left: 0;
    background: #fff0e0;
  }

  ul.vsnav ul a {
    border-radius: 0;
  }

  ul.vsnav ul a::before {
    display: none;
  }

  .flecha {
    transition: transform 0.3s ease;
  }

  li:hover > a > .flecha,
  li.open > a > .flecha {
    transform: rotate(90deg);
  }
}


/* ============================================
   ACCESIBILIDAD
   ============================================ */
ul.vsnav a:focus-visible {
  outline: 2px solid var(--menu-accent);
  outline-offset: -2px;
  border-radius: var(--menu-radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  #itsmenu *,
  #itsmenu *::before,
  #itsmenu *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}



/* ============================================
   Botón 3D estilo menú itssev2026
   Altura máxima 20px
   ============================================ */

.btn-itsmenu {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 20px;
  max-height: 20px;
  padding: 0 10px;
  margin: 0;
  border: none;
  border-radius: 4px;
  cursor: pointer;

  /* Colores del menú */
  background: linear-gradient(
    to bottom,
    #fff0d6 0%,
    #ffe8cc 40%,
    #ffd9a8 100%
  );
  color: #1a1a1a;

  /* Efecto 3D */
  box-shadow:
    0 1px 0 #ffcc80,           /* brillo superior */
    0 2px 3px rgba(0,0,0,0.2), /* sombra exterior */
    inset 0 1px 0 rgba(255,255,255,0.5); /* brillo interior */

  /* Tipografía */
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;

  transition: all 0.15s ease;
}

/* Hover — se ilumina */
.btn-itsmenu:hover {
  background: linear-gradient(
    to bottom,
    #fff5e0 0%,
    #ffdfb3 40%,
    #ffcc80 100%
  );
  box-shadow:
    0 1px 0 #ffc266,
    0 3px 5px rgba(0,0,0,0.22),
    inset 0 1px 0 rgba(255,255,255,0.6);
}

/* Active — se hunde (efecto pulsado) */
.btn-itsmenu:active {
  background: linear-gradient(
    to bottom,
    #ffd9a8 0%,
    #ffcc80 40%,
    #ffe0b2 100%
  );
  box-shadow:
    0 1px 1px rgba(0,0,0,0.15),
    inset 0 1px 2px rgba(0,0,0,0.15);
  transform: translateY(1px);
}

/* Focus accesible */
.btn-itsmenu:focus-visible {
  outline: 2px solid #e67e22;
  outline-offset: 1px;
}