*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.portal {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.55;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(201, 162, 39, 0.08), transparent 55%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 45%, var(--ink) 100%);
  background-attachment: fixed;
}

body.portal a { color: var(--gold-hi); text-decoration: none; transition: color .2s var(--ease); }
body.portal a:hover { color: var(--gold); }

.portal-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ===== Header ===== */
.portal-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background .25s var(--ease), border-color .25s var(--ease), backdrop-filter .25s;
}

.portal-header.is-solid {
  background: rgba(11, 14, 20, 0.92);
  border-bottom-color: var(--line);
  backdrop-filter: blur(10px);
}

.portal-header__inner,
.portal-container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

.portal-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.portal-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--text);
}

.portal-brand img {
  height: 48px;
  width: auto;
  display: block;
}

/* Brand wordmark ẩn: logo.png đã chứa nhận diện */
.portal-brand__text {
  display: none;
}

.portal-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

.portal-nav a {
  display: block;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
  position: relative;
}

.portal-nav a::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 4px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform .2s var(--ease);
}

.portal-nav a:hover,
.portal-nav a.is-active { color: var(--gold-hi); }
.portal-nav a:hover::after,
.portal-nav a.is-active::after { transform: scaleX(1); }

.portal-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  overflow: hidden;
}

.lang-switch a {
  padding: 6px 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  background: transparent;
}

.lang-switch a.is-active {
  color: var(--ink);
  background: var(--gold);
  font-weight: 600;
}

.portal-user {
  position: relative;
}

.portal-user__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--gold-hi);
  background: rgba(22, 26, 34, 0.6);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
}

.portal-user__menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 220px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: 8px 0;
  list-style: none;
  margin: 0;
  box-shadow: 0 16px 40px rgba(0,0,0,.45);
}

.portal-user:hover .portal-user__menu,
.portal-user:focus-within .portal-user__menu { display: block; }

.portal-user__menu a {
  display: block;
  padding: 10px 16px;
  color: var(--text);
  font-size: 13px;
}

.portal-user__menu a:hover { background: rgba(201, 162, 39, 0.08); color: var(--gold-hi); }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  padding: 10px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--gold);
  margin: 5px 0;
  transition: .2s var(--ease);
}

.portal-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1100;
}

.portal-drawer.is-open { display: block; }

.portal-drawer__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.65);
}

.portal-drawer__panel {
  position: absolute;
  top: 0; left: 0;
  width: min(320px, 88vw);
  height: 100%;
  background: var(--ink-2);
  border-right: 1px solid var(--line);
  padding: 24px 18px;
  overflow-y: auto;
}

.portal-drawer__panel a {
  display: block;
  padding: 12px 8px;
  color: var(--text);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.portal-main { flex: 1; }

.portal-main--flush { padding: 0; }
.portal-main:not(.portal-main--flush) {
  padding: 32px 0 64px;
}

.portal-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  background: rgba(11, 14, 20, 0.9);
}

.portal-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.portal-footer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.portal-footer__brand {
  font-family: var(--font-display);
  color: var(--gold-hi);
  letter-spacing: .06em;
  margin: 0 0 4px;
  font-size: 16px;
}

.portal-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 960px) {
  .portal-nav { display: none; }
  .menu-toggle { display: inline-block; }
  .portal-brand__text { display: none; }
}