/* ════════════════════════════════════════════════════════════
   header.css – Juhani Sillanpää navipalkki
   Fontti: Raleway (muista Google Fonts -linkki <head>:ssä)
   ════════════════════════════════════════════════════════════ */

:root {
  --green:     #073B1F;
  --white:     #FFFFFF;
  --font-head: 'Raleway', sans-serif;
  --nav-h:     55px;   /* navin korkeus – muuta täältä */
  --nav-pad:   12px;   /* logon ylä/ala-väli navissa   */
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
}

#site-nav {
  background: var(--green);
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1.5rem;
}

/* ── LOGO ─────────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: calc(var(--nav-h) - var(--nav-pad) * 2);
  width: auto;
  display: block;
}

/* ── LINKIT ───────────────────────────────────────────────── */
.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  white-space: nowrap;
  transition: color 0.18s;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--white);
  outline: none;
}

.nav-links a.active {
  color: var(--white);
}

/* ── HAMBURGER ────────────────────────────────────────────── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  color: var(--white);
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transition: opacity 0.2s, transform 0.2s;
}

/* ── MOBIILI ──────────────────────────────────────────────── */
@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--green);
    padding: 0.75rem clamp(1.25rem, 4vw, 2.5rem) 1.25rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.6rem 0;
    font-size: 0.875rem;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle span,
  .nav-links a {
    transition: none;
  }
}