/* ─────────────────────────────────────────────────────────────
   Navigation — PrathmIQ
   Fixed 60px nav bar, hamburger drawer, responsive
   ───────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 60px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* ── Logo ───────────────────────────────────────────────────── */
.nav__logo {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
  line-height: 1;
}
.nav__logo .iq { color: var(--iq); }

/* ── Desktop link list ──────────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav__link {
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}
.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--text);
  background: var(--bg3);
}

/* ── Right-side actions ─────────────────────────────────────── */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* Theme toggle */
.nav__theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text2);
  background: var(--bg2);
  border: 1px solid var(--border);
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}
.nav__theme-btn:hover { color: var(--text); background: var(--bg3); }

/* Sun icon shown in light mode, moon in dark mode */
.nav__theme-btn .icon-sun  { display: none; }
.nav__theme-btn .icon-moon { display: block; }
[data-theme="light"] .nav__theme-btn .icon-sun  { display: block; }
[data-theme="light"] .nav__theme-btn .icon-moon { display: none; }

/* Sign In */
.nav__signin {
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s;
  white-space: nowrap;
}
.nav__signin:hover { color: var(--text); }

/* Get API Key CTA */
.nav__cta {
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: #0a0a0a;
  background: var(--iq);
  padding: 8px 16px;
  border-radius: 8px;
  transition: opacity 0.15s;
  white-space: nowrap;
}
.nav__cta:hover { opacity: 0.9; }

/* ── Hamburger icon ─────────────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg2);
  border: 1px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
}
.nav__hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.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 drawer ──────────────────────────────────────────── */
.nav__drawer {
  position: fixed;
  inset: 60px 0 0 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 4px;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  overflow-y: auto;
}
.nav__drawer.is-open { transform: translateX(0); }

.nav__drawer-link {
  font-family: 'Outfit', sans-serif;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text2);
  padding: 12px 16px;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}
.nav__drawer-link:hover { color: var(--text); background: var(--bg3); }

.nav__drawer-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

.nav__drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 4px;
}
.nav__drawer-signin {
  font-family: 'Outfit', sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border2);
  text-align: center;
  transition: background 0.15s;
}
.nav__drawer-signin:hover { background: var(--bg3); }

.nav__drawer-cta {
  font-family: 'Outfit', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #0a0a0a;
  background: var(--iq);
  padding: 12px 16px;
  border-radius: 8px;
  text-align: center;
  transition: opacity 0.15s;
}
.nav__drawer-cta:hover { opacity: 0.9; }

/* ── Mobile breakpoint ──────────────────────────────────────── */
@media (max-width: 767px) {
  .nav__links           { display: none; }
  .nav__actions .nav__signin { display: none; }
  .nav__actions .nav__cta    { display: none; }
  .nav__hamburger       { display: flex; }
}