/* ====== Composable Nav (Pattern A) ====== */
:root{
  --cnav-bg: #ffffff;
  --cnav-fg: #111111;
  --cnav-accent: #FFD700;     /* change for brand color */
  --cnav-muted: #6b7280;
  --cnav-border: rgba(0,0,0,.08);
  --cnav-radius: 12px;
  --cnav-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --cnav-maxw: 1200px;
  --cnav-padx: 16px;
  --cnav-link-py: .625rem;
  --cnav-link-px: .875rem;
  --cnav-font: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
}

.c-nav{
  background: var(--cnav-bg);
  color: var(--cnav-fg);
  font-family: var(--cnav-font);
  border-bottom: 1px solid var(--cnav-border);
}
.c-nav__inner{
  max-width: var(--cnav-maxw);
  margin: 0 auto;
  padding: .75rem var(--cnav-padx);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.c-nav__brand{
  font-weight: 700;
  text-decoration: none;
  color: var(--cnav-fg);
  letter-spacing: .2px;
}

/* Mobile toggle */
.c-nav__mobile{
  margin-left: auto;
  position: relative;
}
.c-nav__toggle{
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--cnav-border);
  border-radius: .75rem;
  padding: .5rem .75rem;
}
.c-nav__toggle::-webkit-details-marker { display: none; }

/* Burger icon */
.c-nav__burger{
  position: relative;
  width: 20px; height: 2px;
  background: var(--cnav-fg);
  display: inline-block;
}
.c-nav__burger::before,
.c-nav__burger::after{
  content: "";
  position: absolute; left: 0;
  width: 20px; height: 2px; background: currentColor;
}
.c-nav__burger::before{ top: -6px; }
.c-nav__burger::after{ top: 6px; }

/* Menu (mobile closed by default) */
.c-nav__menu{
  display: none;
  list-style: none;
  padding: .5rem 0 0;
  margin: .5rem 0 0;
  border-top: 1px solid var(--cnav-border);
}
.c-nav__item{ position: relative; }
.c-nav__link{
  display: block;
  text-decoration: none;
  color: var(--cnav-fg);
  padding: var(--cnav-link-py) var(--cnav-link-px);
  border-radius: .5rem;
}
.c-nav__link:hover{ background: rgba(0,0,0,.04); }
.c-nav__item--cta .c-nav__btn{
  display: inline-block;
  margin: .25rem 0 .5rem;
  padding: .55rem .9rem;
  border-radius: .7rem;
  background: var(--cnav-accent);
  color: #000; text-decoration: none; font-weight: 600;
  box-shadow: var(--cnav-shadow);
}
.c-nav__mobile[open] + .c-nav__menu { display: block; }

/* Dropdowns (mobile) via nested <details> */
.c-nav__dropdown > summary{
  list-style: none;
  cursor: pointer;
  display: block;
  padding: var(--cnav-link-py) var(--cnav-link-px);
  border-radius: .5rem;
}
.c-nav__dropdown > summary::-webkit-details-marker { display: none; }
.c-nav__dropdown[open] > summary{ background: rgba(0,0,0,.04); }
.c-nav__submenu{
  list-style: none;
  padding: .25rem .5rem .5rem 1rem;
  margin: 0;
}
.c-nav__sublink{
  display: block;
  text-decoration: none;
  color: var(--cnav-fg);
  padding: .4rem .5rem;
  border-radius: .4rem;
}
.c-nav__sublink:hover{ background: rgba(0,0,0,.05); }

/* Show menu when mobile <details> is open */
.c-nav__mobile[open] > .c-nav__menu{ display: block; }

/* Focus visibility */
.c-nav :focus-visible{
  outline: 2px solid var(--cnav-accent);
  outline-offset: 2px;
  border-radius: .5rem;
}

/* ====== Desktop layout ====== */
@media (min-width: 768px){
  .c-nav__mobile{
    margin-left: auto;
    display: contents; /* expose children to parent flow */
  }
  .c-nav__toggle{ display: none; }
  .c-nav__menu{
    display: flex;
    align-items: center;
    gap: .25rem;
    padding: 0; margin: 0 0 0 auto;
    border-top: 0;
  }
  .c-nav__item--cta .c-nav__btn{ margin: 0 0 0 .25rem; }
  /* Desktop dropdown as hover/focus-within */
  .c-nav__item--has-dropdown{ position: relative; }
  .c-nav__dropdown{ display: block; position: static; }
  .c-nav__dropdown > summary{
    display: inline-block;
    padding: var(--cnav-link-py) var(--cnav-link-px);
  }
  .c-nav__submenu{
    position: absolute;
    top: calc(100% + 6px);
    left: .25rem;
    min-width: 220px;
    background: var(--cnav-bg);
    border: 1px solid var(--cnav-border);
    border-radius: .6rem;
    padding: .4rem;
    box-shadow: var(--cnav-shadow);
    display: none;
    z-index: 20;
  }
  /* Open on hover and keyboard focus */
  .c-nav__item--has-dropdown:hover .c-nav__submenu,
  .c-nav__item--has-dropdown:focus-within .c-nav__submenu,
  .c-nav__dropdown[open] .c-nav__submenu{
    display: block;
  }
}

/* Brand as image */
.c-nav__brand{
  display:inline-flex;
  align-items:center;
  text-decoration:none;
  /* keep existing color/spacing from Pattern A */
  padding: .125rem 0; /* trims vertical jitter */
}
.c-nav__logo{
  display:block;            /* removes baseline gap */
  height: 32px;             /* controls visual size */
  width: auto;              /* preserve aspect ratio */
  max-width: min(180px, 40vw);
  object-fit: contain;
}
@media (min-width:768px){
  .c-nav__logo{ height: 36px; }
}