/* ════════════════════════════════════════════════════════════
   HEADER MODERNO - FLCH UNMSM
   Stack: Tailwind CSS + GSAP + Alpine.js
   ═══════════════════════════════════════════════════════════ */

/* Skip Link para accesibilidad */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Header con animación de entrada */
.header-modern {
    animation: slideDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Nav items con animación escalonada */
.nav-modern {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-modern > li {
    position: relative;
    display: inline-block;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.nav-modern > li > a {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-modern > li:nth-child(1) { animation-delay: 0.1s; }
.nav-modern > li:nth-child(2) { animation-delay: 0.2s; }
.nav-modern > li:nth-child(3) { animation-delay: 0.3s; }
.nav-modern > li:nth-child(4) { animation-delay: 0.4s; }
.nav-modern > li:nth-child(5) { animation-delay: 0.5s; }
.nav-modern > li:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Submenus con animación suave - Sin límite de ancho */
.nav-modern .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    min-width: auto;
    width: max-content;
    max-width: 500px;
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-radius: 0.5rem;
    overflow: visible;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95) translateY(-10px);
    transition: all 0.2s ease-out;
    border: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

/* Mostrar submenu al hacer hover en el padre */
.nav-modern > li:hover > .sub-menu,
.nav-modern > li.group:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

/* Items del submenu */
.nav-modern .sub-menu > li {
    position: relative;
    display: block;
}

.nav-modern .sub-menu > li > a {
    display: block;
    padding: 0.5rem 1rem;
    color: #374151;
    font-size: 0.875rem;
    transition: all 0.2s;
    white-space: normal;
    line-height: 1.4;
    word-wrap: break-word;
}

.nav-modern .sub-menu > li > a:hover {
    background-color: #E6EBF0;
    color: #143B63;
}

/* Submenus de segundo nivel (hacia la derecha) */
.nav-modern .sub-menu .sub-menu {
    top: 0;
    left: 100%;
    margin-top: 0;
    margin-left: 0.5rem;
}

/* Hover en items con submenu de segundo nivel */
.nav-modern .sub-menu > li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Mobile menu styles */
.mobile-nav-modern {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-modern > li {
    margin-bottom: 0.5rem;
}

.mobile-nav-modern > li > a {
    display: block;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.mobile-nav-modern > li > a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #A88F1D;
}

.mobile-nav-modern .sub-menu {
    list-style: none;
    margin-left: 1rem;
    margin-top: 0.5rem;
    padding-left: 1rem;
    border-left: 2px solid rgba(168, 143, 29, 0.3);
}

.mobile-nav-modern .sub-menu li {
    margin-bottom: 0.25rem;
}

.mobile-nav-modern .sub-menu a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.mobile-nav-modern .sub-menu a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.95);
}

/* Mobile submenu toggle */
.mobile-submenu-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 0.375rem;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    transition: all 0.2s;
}

.mobile-submenu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #A88F1D;
}

.mobile-submenu-toggle i {
    transition: transform 0.2s;
}

.mobile-submenu-toggle[aria-expanded="true"] i {
    transform: rotate(180deg);
}

/* Colores personalizados (para compatibilidad si no están en Tailwind config) */
.bg-navy-800 { background-color: #0A1E3C !important; }
.bg-navy-900 { background-color: #051220 !important; }
.bg-navy-50 { background-color: #E6EBF0 !important; }
.text-gold-400 { color: #A88F1D !important; }
.border-gold-400 { border-color: #A88F1D !important; }
.hover\:text-gold-400:hover { color: #A88F1D !important; }
.hover\:bg-gold-500:hover { background-color: #8F7A18 !important; }

/* Fix para asegurar background del header */
.header-modern {
    background: linear-gradient(180deg, #051220 0%, #0A1E3C 100%) !important;
}

/* Override de plugins que puedan interferir */
header.header-modern * {
    box-sizing: border-box;
}

/* Asegurar colores de texto del menú */
.nav-modern > li > a {
    color: rgba(255, 255, 255, 0.9) !important;
}

.nav-modern > li > a:hover {
    color: #C7B76F !important;
}

/* Responsive utilities */
@media (max-width: 1023px) {
    .lg\:hidden { display: block; }
    .lg\:flex { display: none; }
    .lg\:block { display: none; }
}

@media (min-width: 1024px) {
    .lg\:hidden { display: none; }
    .lg\:flex { display: flex; }
    .lg\:block { display: block; }
}

/* Performance optimizations */
.header-modern,
.nav-modern,
.nav-modern a,
.mobile-nav-modern a {
    will-change: auto;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus states para accesibilidad */
button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid #A88F1D;
    outline-offset: 2px;
}