/* ═══════════════════════════════════════════════════════════
   SPARK7 – NAV COMPONENT
   nav.css
═══════════════════════════════════════════════════════════ */

@import './tokens.css';

.s7-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 48px;
  background: var(--s7-bg-glass);
  border-bottom: var(--s7-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* Brand wordmark */
.s7-nav__brand {
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: 0.18em;
  color: var(--s7-cyan);
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--transition);
  line-height: 1;
  display: flex;
  align-items: center;
  height: 100%;
}
.s7-nav__brand:hover {
  color: #fff;
}

/* Nav links list */
.s7-nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.s7-nav__link {
  font-family: var(--font-heading);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.s7-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--s7-cyan);
  transition: width var(--transition);
}

.s7-nav__link:hover,
.s7-nav__link.active {
  color: var(--s7-cyan);
}

.s7-nav__link:hover::after,
.s7-nav__link.active::after {
  width: 100%;
}

/* Mobile hamburger (toggle via JS) */
.s7-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.s7-nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--s7-cyan);
  transition: all var(--transition);
}
.s7-nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.s7-nav__hamburger.open span:nth-child(2) { opacity: 0; }
.s7-nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.s7-nav__drawer {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--s7-bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: var(--s7-border);
  padding: 24px 48px 32px;
  flex-direction: column;
  gap: 20px;
  z-index: 999;
}
.s7-nav__drawer.open {
  display: flex;
}
.s7-nav__drawer .s7-nav__link {
  font-size: 13px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .s7-nav {
    padding-inline: 24px;
  }
  .s7-nav__links {
    display: none;
  }
  .s7-nav__hamburger {
    display: flex;
  }
}