/* ============================================================
   SHIVORAA — nav.css  |  macOS Premium Theme
============================================================ */

#header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
#header.scrolled {
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom-color: rgba(0,0,0,0.08);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.nav-inner { display: flex; align-items: center; height: 64px; gap: 12px; }

.nav-logo {
  display: flex; align-items: center; gap: 9px;
  flex-shrink: 0; -webkit-tap-highlight-color: transparent;
}
.logo-mark { flex-shrink: 0; }
.logo-wordmark {
  font-size: 1.05rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text);
}

.nav-links { display: none; align-items: center; gap: 0; margin-left: auto; }
@media (min-width: 768px) { .nav-links { display: flex; } }
.nav-links a {
  padding: 7px 16px; font-size: 0.82rem; font-weight: 500;
  color: var(--text2); border-radius: 8px;
  transition: color var(--t), background var(--t);
}
.nav-links a:hover { color: var(--text); background: var(--bg-alt); }

.nav-cta {
  display: none; margin-left: 12px;
  padding: 8px 20px; font-size: 0.82rem;
}
@media (min-width: 768px) { .nav-cta { display: inline-flex; } }

.hamburger {
  display: flex; flex-direction: column; justify-content: center;
  gap: 5px; width: 40px; height: 40px; padding: 9px;
  margin-left: auto; background: none;
  border: 1.5px solid var(--border); border-radius: 8px;
  -webkit-tap-highlight-color: transparent; transition: border-color var(--t), background var(--t);
}
.hamburger:hover { border-color: rgba(0,0,0,0.2); background: var(--bg-alt); }
.hamburger span {
  display: block; width: 100%; height: 1.5px;
  background: var(--text2); border-radius: 2px;
  transition: transform var(--t), opacity var(--t);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
@media (min-width: 768px) { .hamburger { display: none; } }

/* ---------- DRAWER ---------- */
.drawer-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s var(--ease);
}
.drawer-overlay.open { opacity: 1; pointer-events: all; }

.mobile-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 1001;
  width: min(85vw, 320px);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(40px); -webkit-backdrop-filter: blur(40px);
  border-left: 1px solid var(--border2);
  box-shadow: -24px 0 80px rgba(0,0,0,0.12);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.32,0,0.16,1);
  overflow-y: auto; -webkit-overflow-scrolling: touch;
}
.mobile-drawer.open { transform: translateX(0); }

.drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; border-bottom: 1px solid var(--border2); flex-shrink: 0;
}
.drawer-logo {
  font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; color: var(--text);
}
.drawer-close {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; background: var(--bg-alt);
  border: none; border-radius: 50%; color: var(--text2);
  transition: background var(--t), color var(--t);
  -webkit-tap-highlight-color: transparent;
}
.drawer-close:hover { background: var(--surface3); color: var(--text); }

.drawer-nav { flex: 1; display: flex; flex-direction: column; padding: 12px 16px; gap: 2px; }
.drawer-link {
  display: block; padding: 14px 16px;
  font-size: 0.9rem; font-weight: 500;
  color: var(--text2); border-radius: 10px;
  transition: color var(--t), background var(--t);
  -webkit-tap-highlight-color: transparent;
}
.drawer-link:hover, .drawer-link:active { color: var(--blue); background: var(--blue-bg); }

.drawer-footer {
  padding: 20px 24px; border-top: 1px solid var(--border2);
  display: flex; flex-direction: column; gap: 12px; flex-shrink: 0;
}
.drawer-email { text-align: center; font-size: 0.82rem; color: var(--text3); transition: color var(--t); }
.drawer-email:hover { color: var(--blue); }