@charset "utf-8";

/* =========================================================
   PTSCIL – Header Styles (isolated)
   Requires:
   - HTML hooks: data-header, data-nav, data-menu-btn, data-lang, data-lang-btn
   - JS: /js/nav.js
   ========================================================= */

/* ------- Header tokens (keep minimal) ------- */
:root{
  --header-bg: rgba(255,255,255,.92);
  --header-line: rgba(0,0,0,.06);
  --header-shadow: 0 1px 0 rgba(0,0,0,.06);
  --header-menu-shadow: 0 18px 50px rgba(0,0,0,.12);

  /* header height safety for overlay placement */
  --mobile-nav-top: 190px;

  /* Typography */
  --header-serif: var(--font-sans);
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 90; /* header above overlay */
  background: var(--header-bg);
  backdrop-filter: saturate(1.2) blur(10px);
  box-shadow: var(--header-shadow);
}

.header-brand{
  padding: 14px 0 10px;
}

.brand{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}

.brand-logo{
  width: 56px;
  height: 56px;
}

.brand-name{
  font-family: var(--header-serif);
  font-weight: 650;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-size: clamp(1.05rem, 1.2vw + .9rem, 1.35rem);
  color: inherit;
}

.brand-claim{
  font-weight: 400;
  letter-spacing: .10em;
  text-transform: uppercase;

  /* FIX: max must be >= min */
  font-size: clamp(.70rem, .35vw + .12rem, .86rem);

  color: rgba(0,0,0,.52);
  line-height: 1.25;
  margin-top: 4px;
  text-align: center;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  max-width: 72ch;
}

.header-bar{
  border-top: 1px solid var(--header-line);
  border-bottom: 1px solid var(--header-line);
  background: rgba(255,255,255,.96);
}

.header-bar-inner{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 0;
}

/* ------- Burger ------- */
.menu-btn{
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0,0,0,.10);
  background: #fff;
  border-radius: 14px;
  cursor: pointer;
  position: relative;
  z-index: 95; /* keep burger always clickable */

  /* keep hamburger lines stacked cleanly */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
}

.menu-btn span{
  display: block;
  width: 18px;
  height: 2px;
  background: rgba(0,0,0,.72);
  margin: 0;
  border-radius: 2px;
  flex: 0 0 auto;
}

/* ------- Nav ------- */
.nav{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.nav a{
  color: rgba(0,0,0,.78);
  font-weight: 600;
  letter-spacing: .10em;
  text-transform: uppercase;
  font-size: .70rem;
  padding: 10px 8px;
  border-radius: 12px;
  transition: background .18s ease, color .18s ease;
}

.nav a[aria-current="page"]{
  background: rgba(0,0,0,.06);
  color: rgba(0,0,0,.92);
}

.nav a:hover{
  background: rgba(0,0,0,.04);
}

.nav-sep{
  width: 1px;
  height: 22px;
  background: rgba(0,0,0,.10);
}

.nav-spacer{
  flex: 1 1 auto;
  min-width: 18px;
}

.nav-contact{
  border: 1px solid rgba(0,0,0,.12);
  background: #fff;
  padding: 10px 12px;
}

/* ------- Language ------- */
.lang{ position: relative; }

.lang-btn{
  border: 1px solid rgba(0,0,0,.12);
  background: #fff;
  border-radius: 14px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 650;
  letter-spacing: .10em;
  text-transform: uppercase;
  font-size: .82rem;
  color: rgba(0,0,0,.78);
}

.lang-menu{
  position: absolute;
  z-index: 100;
  right: 0;
  top: calc(100% + 10px);
  min-width: 200px;
  background: #fff;
  border: 1px solid rgba(0,0,0,.10);
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,.08);
  padding: 8px;
  display: none;
}
.lang.open .lang-menu{ display: block; }

.lang-menu a{
  display: block;
  padding: 10px 10px;
  border-radius: 10px;
  color: rgba(0,0,0,.78);
  font-weight: 600;
  letter-spacing: .02em;
}
.lang-menu a:hover{ background: rgba(0,0,0,.05); }

/* =========================================================
   Desktop narrow usability
   ========================================================= */
@media (max-width: 1180px){
  .nav{ gap: 12px; }
  .nav a{ padding: 10px 6px; }
}

@media (max-width: 1060px) and (min-width: 981px){
  .header-bar-inner{ justify-content: flex-start; }

  .nav{
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    width: 100%;
    scrollbar-width: none;
  }
  .nav::-webkit-scrollbar{ display: none; }
  .nav a{ white-space: nowrap; }
}

/* =========================================================
   Mobile off-canvas (no overlap with burger/header)
   ========================================================= */
@media (max-width: 980px){
  .header-brand{ padding: 12px 0 8px; }
  .header-bar-inner{ justify-content: space-between; }

  .menu-btn{
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Backdrop (created via nav.js) */
  .nav-backdrop{
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.38);
    z-index: 70; /* below nav, below header */
  }

  .nav{
    position: fixed;
    left: 16px;
    right: 16px;

    /* always below header (and safe-area) */
    top: calc(env(safe-area-inset-top, 0px) + var(--mobile-nav-top));

    width: auto;
    max-width: 520px;
    margin-inline: auto;

    background: #fff;
    border: 1px solid rgba(0,0,0,.10);
    border-radius: 18px;
    box-shadow: var(--header-menu-shadow);
    padding: 14px;

    display: flex;
    flex-direction: column !important;
    flex-wrap: nowrap !important;
    align-items: stretch;
    justify-content: flex-start;
    gap: 6px;

    max-height: calc(100dvh - (env(safe-area-inset-top, 0px) + var(--mobile-nav-top)) - 16px);
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;

    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity .18s ease, transform .18s ease;

    z-index: 80; /* above backdrop */
  }

  .nav.open{
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-sep, .nav-spacer{ display: none; }

  /* tap targets */
  .nav a,
  .lang-btn{
    display: block;
    width: 100%;
    max-width: 100%;
    text-align: left;
    font-size: .95rem;
    padding: 12px 12px;
    min-height: 44px;
    letter-spacing: .08em;
    white-space: normal;
  }

  .lang{
    width: 100%;
    position: relative;
  }

  .lang-menu{
    position: static;
    min-width: 0;
    width: 100%;
    max-width: 100%;
    border-radius: 12px;
    box-shadow: none;
    margin-top: 6px;
    overflow: hidden;
  }

  .lang-menu a{
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .nav-contact{ margin-top: 8px; }
}