/* =========================================================
   nav.css — Fixed navigation bar
   ========================================================= */

/* Nav link icons */
.nav__link i,
.nav__mobile-link i {
  font-size: 13px;
  margin-right: 4px;
  color: #94a3b8;
}

/* ---------- Base Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

/* Scrolled state — added via JS or :has hack */
.nav.scrolled {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(15,23,42,.08);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max-width), 100% - var(--space-8));
  margin-inline: auto;
}

/* ---------- Logo ---------- */
.nav__logo {
  display: inline-flex;
  align-items: center;
  transition: opacity var(--duration-fast);
}

.nav__logo:hover {
  opacity: 0.75;
}

.nav__logo-img {
  height: 30px;
  width: auto;
  display: block;
}

/* ---------- Desktop Links ---------- */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__auth {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: var(--space-2);
}

.nav__user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.45rem 0.6rem 0.45rem 0.45rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  position: static;
}

.nav__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, #4f46e5 100%);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.2);
}

.nav__user-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.nav__user-label {
  color: var(--slate-400);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav__user-name {
  color: var(--slate-900);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--slate-600);
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 2px;
  background-color: var(--blue);
  border-radius: var(--radius-pill);
  transition: width var(--duration-fast) var(--ease-out);
}

.nav__link:hover {
  color: var(--slate-900);
}

.nav__link:hover::after {
  width: 100%;
}

/* ---------- Nav CTA ---------- */
.nav__cta {
  margin-left: var(--space-4);
}

.nav__logout {
  border-width: 1.5px;
  padding-inline: 1rem;
}

.nav__practice {
  display: inline-flex;
  align-items: center;
  background: #2563EB;
  color: #fff;
  border-radius: 8px;
  padding: 8px 20px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--duration-fast);
}

.nav__practice:hover {
  background: #1D4ED8;
}

.nav__practice--mobile {
  display: block;
  width: 100%;
  text-align: center;
  margin-bottom: var(--space-3);
  border-radius: 8px;
}

/* ---------- Hamburger (mobile) ---------- */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast);
}

.nav__hamburger:hover {
  background-color: var(--slate-100);
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--slate-900);
  border-radius: var(--radius-pill);
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-normal) var(--ease-out);
}

/* Open state */
.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Mobile Menu ---------- */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-4) var(--space-6) var(--space-6);
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  transform: translateY(-8px);
  opacity: 0;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

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

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--slate-700, #334155);
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast), color var(--duration-fast);
}

.nav__mobile-link:hover {
  background-color: var(--slate-100);
  color: var(--slate-900);
}

.nav__mobile .btn {
  width: 100%;
}

.nav__mobile-account {
  display: grid;
  gap: var(--space-3);
}

.nav__mobile-account .nav__user {
  width: 100%;
  justify-content: flex-start;
  background: var(--white);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile {
    display: block;
  }
}

@media (max-width: 768px) {
  /* Not enough horizontal space — hide the label/name text, keep avatar + logout */
  .nav__user-copy {
    display: none;
  }
}