/* ── TIPOGRAFIA ── */
@font-face {
  font-family: 'ehbildu';
  src: url('Tipografiak/BilduSans/BilduSans-Light.otf') format('opentype');
  font-weight: normal;
}
@font-face {
  font-family: 'ehbildu';
  src: url('Tipografiak/BilduSans/BilduSans-Regular.otf') format('opentype');
  font-weight: 500;
}
@font-face {
  font-family: 'ehbildu';
  src: url('Tipografiak/BilduSans/BilduSans-Bold.otf') format('opentype');
  font-weight: 700;
}
@font-face {
  font-family: 'ehbildu';
  src: url('Tipografiak/BilduSans/BilduSans-Black.otf') format('opentype');
  font-weight: 800;
}

/* ── ALDAGAIAK ── */
:root {
  --berdea:      #00C19F;
  --beltza:      #000000;
  --zuria:       #ffffff;
  --gris-claro:  #f4f4f4;
  --gris-texto:  #333333;
  --gris-medio:  #666666;
}

/* ── RESET ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'ehbildu', sans-serif;
  background-color: var(--zuria);
  color: var(--gris-texto);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.contenedor {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HEADER ── */
.header {
  background-color: var(--berdea);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 15px;
  padding-bottom: 20px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header__img {
  height: 40px;
  width: auto;
}

.nav__lista {
  list-style: none;
  display: flex;
  gap: 28px;
}

.nav__enlace {
  color: var(--zuria);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.nav__enlace:hover,
.nav__enlace--aktibo {
  border-bottom-color: var(--zuria);
}

.nav__item { position: relative; }

.nav__enlace--dropdown::after {
  content: ' ▾';
  font-size: 0.72rem;
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--zuria);
  border-radius: 0 0 8px 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.22);
  list-style: none;
  min-width: 190px;
  padding: 4px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s;
  z-index: 200;
}

.nav__item:hover .nav__dropdown {
  opacity: 1;
  pointer-events: auto;
}

.nav__dropdown-enlace {
  display: block;
  padding: 11px 20px;
  color: var(--berdea);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background-color 0.15s;
}

.nav__dropdown-enlace:hover {
  background-color: #f0fdf9;
}

/* ── HERO TXIKIA ── */
.hero-dok {
  background-color: var(--gris-claro);
  padding: 40px 0 36px;
  text-align: center;
}

.hero-dok__etiketa {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--berdea);
  margin-bottom: 14px;
}

.hero-dok__titulo {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--beltza);
  line-height: 1.15;
  margin-bottom: 10px;
}

.hero-dok__azpititulua {
  font-size: 1rem;
  color: var(--gris-medio);
  margin-bottom: 28px;
}

.deskarga-botoia {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--berdea);
  color: var(--zuria);
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.03em;
  transition: opacity 0.2s, transform 0.15s;
}

.deskarga-botoia:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

.deskarga-botoia__ikonoa {
  font-size: 1.2rem;
}

/* ── PDF BISORATZAILEA ── */
.pdf-ingurua {
  flex: 1;
  padding: 32px 24px 48px;
  background-color: var(--zuria);
}

.pdf-ingurua__barne {
  max-width: 960px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.14);
  border: 1px solid #e0e0e0;
}

.pdf-iframe {
  width: 100%;
  height: 820px;
  display: block;
  border: none;
}

.pdf-oharra {
  text-align: center;
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--gris-medio);
}

.pdf-oharra a {
  color: var(--berdea);
  font-weight: 700;
  text-decoration: none;
}

.pdf-oharra a:hover {
  text-decoration: underline;
}

/* ── RESPONSIVIDAD ── */
@media (max-width: 900px) {
  .hero-dok__titulo {
    font-size: 1.6rem;
  }

  .pdf-iframe {
    height: 600px;
  }
}

@media (max-width: 600px) {
  .header__inner {
    flex-direction: column;
    gap: 12px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .nav__lista {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-dok__titulo {
    font-size: 1.35rem;
  }

  .pdf-iframe {
    height: 480px;
  }

  .pdf-ingurua {
    padding: 20px 12px 36px;
  }
}