/* Menu mobile dạng ngăn kéo trượt từ phải (markup: partials/v2/header.blade.php, JS: site/v2/landing.js).
   Chuyển động theo motion tokens của transitions-dev (panel reveal): mở 400ms, đóng 350ms, ease smooth-out. */
.nav-drawer {
  --drawer-open-dur: 400ms;
  --drawer-close-dur: 350ms;
  --drawer-ease: cubic-bezier(0.22, 1, 0.36, 1);
  position: fixed;
  inset: 0;
  z-index: 1000;
  visibility: hidden;
  transition: visibility 0s linear var(--drawer-close-dur);
}
.nav-drawer[data-open="true"] {
  visibility: visible;
  transition-delay: 0s;
}

.nav-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 33, 41, .5);
  opacity: 0;
  transition: opacity var(--drawer-close-dur) var(--drawer-ease);
}
.nav-drawer[data-open="true"] .nav-drawer-backdrop {
  opacity: 1;
  transition-duration: var(--drawer-open-dur);
}

.nav-drawer-panel {
  position: absolute;
  inset: 0 0 0 auto;
  width: min(86vw, 380px);
  display: flex;
  flex-direction: column;
  background: #fff;
  color: var(--ink, #1a2129);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 24px max(24px, env(safe-area-inset-bottom));
  transform: translateX(100%);
  transition: transform var(--drawer-close-dur) var(--drawer-ease);
  font-family: "Times New Roman", Times, "Liberation Serif", "Noto Serif", serif;
}
.nav-drawer[data-open="true"] .nav-drawer-panel {
  transform: translateX(0);
  transition-duration: var(--drawer-open-dur);
}
.nav-drawer-panel:focus { outline: none; }

.nav-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  border-bottom: 1px solid var(--line, #dce2e7);
}
.nav-drawer-title {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--muted, #53606c);
}
.nav-drawer-close {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.nav-drawer .mobile-nav {
  display: flex;
  flex-direction: column;
  padding: 8px 0 0;
}
.nav-drawer .mobile-nav a {
  display: flex;
  align-items: center;
  min-height: 56px;
  border-bottom: 1px solid var(--line, #dce2e7);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -.015em;
  color: inherit;
  text-decoration: none;
}
.nav-drawer .mobile-nav a[aria-current="page"] {
  color: var(--blue, #1c69d4);
  box-shadow: inset 3px 0 0 var(--blue, #1c69d4);
  padding-left: 14px;
}

.nav-drawer-contact {
  margin-top: auto;
  padding-top: 32px;
  display: grid;
  gap: 12px;
}
.nav-drawer-contact p {
  margin: 0;
  font-size: .8125rem;
  color: var(--muted, #53606c);
}
.nav-drawer-contact .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 50px;
  padding: 12px 20px;
  background: var(--blue, #1c69d4);
  border: 1px solid var(--blue, #1c69d4);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
}
.nav-drawer-call {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  border: 1px solid var(--line, #dce2e7);
  color: inherit;
  font-weight: 600;
  text-decoration: none;
}

.nav-drawer :is(a, button):focus-visible {
  outline: 3px solid var(--blue, #1c69d4);
  outline-offset: 2px;
}

/* Khóa cuộn trang phía sau khi mở menu. */
html.nav-drawer-open,
html.nav-drawer-open body { overflow: hidden; }

/* Ngăn kéo chỉ dùng cho màn hẹp; nút mở menu cũng chỉ hiện ở ≤ 900px. */
@media (min-width: 901px) {
  .nav-drawer { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-drawer,
  .nav-drawer-backdrop,
  .nav-drawer-panel { transition: none !important; }
}