/* ============================================================
   IQRAM AHMED PORTFOLIO — nav.css
   ============================================================ */

.site-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 var(--space-5);
  height: var(--nav-height);
  border-bottom: var(--border-default);
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--site-max-width);
  z-index: var(--z-nav);
  background: rgba(10, 10, 10, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background var(--transition-base);
}

/* Left — nav links */
.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-left a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--transition-base);
}

.nav-left a:hover {
  color: var(--color-text-secondary);
}

.nav-left a.active {
  color: var(--color-text-primary);
  position: relative;
}

.nav-left a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* Center — logo */
.nav-center {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  text-align: center;
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.nav-center:hover {
  opacity: 0.7;
}

/* Right — status + CTA */
.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* Pulsing availability dot */
.nav-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  flex-shrink: 0;
  animation: nav-pulse 2.5s ease infinite;
}

@keyframes nav-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

/* Contact button */
.nav-contact {
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--color-accent-subtle);
  padding: 8px 18px;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), background var(--transition-base);
  white-space: nowrap;
}

.nav-contact:hover {
  border-color: var(--color-accent-muted);
  background: var(--color-accent-deep);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-text-muted);
  transition: all var(--transition-base);
}

/* Mobile overlay */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg-primary);
  z-index: calc(var(--z-nav) - 1);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.nav-mobile.is-open {
  display: flex;
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
  transition: color var(--transition-base);
}

.nav-mobile a:hover {
  color: var(--color-accent);
}

/* Spacer — pushes page content below fixed nav */
.nav-spacer {
  height: var(--nav-height);
}

/* ----------------------------------------------------------
   RESPONSIVE
---------------------------------------------------------- */
@media (max-width: 768px) {
  .site-nav {
    padding: 0 var(--space-3);
  }

  .nav-left {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-right .nav-contact {
    display: none;
  }

  .nav-dot {
    display: none;
  }
}

/* Mobile menu — high DPI phones (390–430px) */
@media (max-width: 430px) {
  .nav-mobile a {
    font-size: 1.875rem; /* 30px — still large, fits smaller viewports */
  }
}