/* =============================================================
   IDATA Elementor Widgets – HEADER
   Phụ thuộc: idata-core
============================================================= */

/* =============================================================
   IDATA – HEADER / TOPBAR / MEGA MENU / MOBILE NAV
   File: assets/css/header.css
   Widget dự kiến: IDATA Header (Elementor Theme Builder)
============================================================= */

.idata-header-area {
  position: sticky;
  top: 0;
  z-index: var(--idata-z-header);
}

/* ---------- TOPBAR ---------- */
.idata-topbar {
  background: var(--idata-dark);
  color: var(--idata-on-dark-muted);
  font-size: var(--idata-fs-xs);
}
.idata-topbar__inner {
  min-height: var(--idata-topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--idata-space-5);
}
.idata-topbar__tagline { margin: 0; letter-spacing: 0.01em; }
.idata-topbar__list { display: flex; align-items: center; gap: var(--idata-space-5); }
.idata-topbar__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color var(--idata-transition-fast);
}
.idata-topbar__link:hover { color: #fff; }
.idata-topbar__link--client {
  padding: 4px 12px;
  border: 1px solid var(--idata-border-dark);
  border-radius: var(--idata-radius-pill);
}
.idata-topbar__link--client:hover {
  border-color: var(--idata-cyan);
  color: #fff;
}

/* ---------- HEADER ---------- */
.idata-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--idata-transition), border-color var(--idata-transition), background-color var(--idata-transition);
}
.idata-header-area.is-stuck .idata-header {
  background: #fff;
  border-bottom-color: var(--idata-border);
  box-shadow: var(--idata-shadow-sm);
}

.idata-header__inner {
  height: var(--idata-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--idata-space-5);
}

.idata-header__logo { display: flex; align-items: center; flex-shrink: 0; }
.idata-header__logo img { width: auto; height: 40px; }

/* ---------- NAV DESKTOP ---------- */
.idata-nav { display: flex; align-items: center; }
.idata-nav__list { display: flex; align-items: center; gap: var(--idata-space-6); }
.idata-nav__item { position: relative; }

.idata-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 0;
  font-size: var(--idata-fs-sm);
  font-weight: var(--idata-font-weight-semibold);
  color: var(--idata-heading);
  position: relative;
  transition: color var(--idata-transition-fast);
}
.idata-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--idata-gradient-primary);
  transition: width var(--idata-transition-fast);
}
.idata-nav__link:hover { color: var(--idata-primary); }
.idata-nav__link:hover::after,
.idata-nav__item--has-mega.is-open > .idata-nav__link::after { width: 100%; }
.idata-nav__item--has-mega.is-open > .idata-nav__link { color: var(--idata-primary); }

.idata-nav__chevron { transition: transform var(--idata-transition-fast); }
.idata-nav__item--has-mega.is-open .idata-nav__chevron { transform: rotate(180deg); }

.idata-nav__mobile-actions { display: none; }

/* ---------- MEGA MENU ---------- */
.idata-mega {
  position: absolute;
  top: calc(100% + 18px);
  left: 50%;
  width: min(1040px, calc(100vw - 48px));
  transform: translateX(-50%) translateY(8px);
  opacity: 0;
  visibility: hidden;
  z-index: var(--idata-z-mega);
  transition: opacity var(--idata-transition), transform var(--idata-transition), visibility var(--idata-transition);
}
.idata-nav__item--has-mega.is-open .idata-mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
/* Cầu nối vô hình lấp khoảng trống giữa nút và menu để hover không bị ngắt.
   Pseudo-element rỗng, không chứa nội dung văn bản. */
.idata-mega::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -20px;
  height: 20px;
}

.idata-mega__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--idata-space-5);
  padding: var(--idata-space-6);
  background: var(--idata-surface);
  border: 1px solid var(--idata-border);
  border-radius: var(--idata-radius-lg);
  box-shadow: var(--idata-shadow-lg);
}

.idata-mega__col { position: relative; }
.idata-mega__col + .idata-mega__col { padding-left: var(--idata-space-5); border-left: 1px solid var(--idata-border); }

.idata-mega__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--idata-space-4);
  font-size: var(--idata-fs-xs);
  font-weight: var(--idata-font-weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--idata-muted);
}
.idata-mega__dot { width: 8px; height: 8px; border-radius: 50%; }
.idata-mega__col--agency .idata-mega__dot { background: var(--idata-primary); }
.idata-mega__col--cloud .idata-mega__dot { background: var(--idata-cyan); }
.idata-mega__col--business .idata-mega__dot { background: var(--idata-accent); }

.idata-mega__list { display: grid; gap: 2px; }
.idata-mega__list a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--idata-radius-sm);
  transition: background-color var(--idata-transition-fast), transform var(--idata-transition-fast);
}
.idata-mega__list a:hover { background: var(--idata-primary-light); transform: translateX(3px); }
.idata-mega__col--business .idata-mega__list a:hover { background: var(--idata-accent-light); }

.idata-mega__name {
  display: block;
  font-size: var(--idata-fs-sm);
  font-weight: var(--idata-font-weight-semibold);
  color: var(--idata-heading);
}
.idata-mega__desc {
  display: block;
  margin-top: 1px;
  font-size: var(--idata-fs-xs);
  line-height: 1.45;
  color: var(--idata-muted);
}

.idata-mega__cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: var(--idata-space-4);
  padding: 10px 14px;
  width: 100%;
  border-radius: var(--idata-radius-sm);
  background: var(--idata-accent-light);
  color: var(--idata-accent-dark);
  font-size: var(--idata-fs-xs);
  font-weight: var(--idata-font-weight-semibold);
  transition: background-color var(--idata-transition-fast);
}
.idata-mega__cta:hover { background: #FCE7C8; }

/* ---------- HEADER ACTIONS + BURGER ---------- */
.idata-header__actions { display: flex; align-items: center; gap: var(--idata-space-4); flex-shrink: 0; }

.idata-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--idata-radius-sm);
  border: 1px solid var(--idata-border);
  background: var(--idata-surface);
}
.idata-burger__line {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  border-radius: 2px;
  background: var(--idata-heading);
  transition: transform var(--idata-transition-fast), opacity var(--idata-transition-fast);
}
.idata-burger.is-active .idata-burger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.idata-burger.is-active .idata-burger__line:nth-child(2) { opacity: 0; }
.idata-burger.is-active .idata-burger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- OVERLAY MOBILE ---------- */
.idata-nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--idata-z-overlay);
  background: rgba(7, 26, 51, 0.5);
  opacity: 0;
  transition: opacity var(--idata-transition);
}
.idata-nav-overlay.is-active { opacity: 1; }


/* ============ RESPONSIVE ============ */

@media (max-width: 1200px) {
  .idata-nav__list { gap: var(--idata-space-5); }
}

@media (max-width: 1024px) {
  .idata-header__actions .idata-btn { display: none; }
  .idata-burger { display: flex; }
  .idata-topbar, .idata-header { position: relative;
    z-index: 3; }
  .idata-header { background: var(--idata-surface);
    backdrop-filter: none;
    -webkit-backdrop-filter: none; }
  .idata-nav-overlay { z-index: 2; }
  .idata-nav { position: fixed;
    top: var(--idata-header-total);
    right: 0;
    z-index: 4;
    width: min(360px, 88vw);
    height: calc(100dvh - var(--idata-header-total));
    display: block;
    padding: var(--idata-space-5) var(--idata-space-5) var(--idata-space-7);
    background: var(--idata-surface);
    box-shadow: var(--idata-shadow-lg);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(100%);
    transition: transform var(--idata-transition); }
  .idata-nav.is-open { transform: translateX(0); }
  .idata-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .idata-nav__item + .idata-nav__item { border-top: 1px solid var(--idata-border); }
  .idata-nav__link { width: 100%;
    justify-content: space-between;
    padding: 15px 4px;
    font-size: var(--idata-fs-body); }
  .idata-nav__link::after { display: none; }
  .idata-nav__mobile-actions { display: grid;
    gap: 10px;
    margin-top: var(--idata-space-6); }
  .idata-mega { position: static;
    width: 100%;
    transform: none;
    opacity: 1;
    visibility: visible;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--idata-transition); }
  .idata-nav__item--has-mega.is-open .idata-mega { max-height: 1400px; transform: none; }
  .idata-mega__inner { grid-template-columns: 1fr;
    gap: var(--idata-space-4);
    padding: 0 0 var(--idata-space-4);
    background: none;
    border: 0;
    border-radius: 0;
    box-shadow: none; }
  .idata-mega__col + .idata-mega__col { padding-left: 0; border-left: 0; padding-top: var(--idata-space-4); border-top: 1px dashed var(--idata-border); }
  .idata-mega__list a { padding: 8px 10px; }
  .idata-mega__desc { display: none; }
}

@media (max-width: 768px) {
  .idata-topbar__tagline, .idata-topbar__link--client { display: none; }
  .idata-topbar__inner { justify-content: center; }
  .idata-topbar__list { gap: var(--idata-space-4); }
  .idata-header__logo img { height: 34px; }
}

/* ============ MODIFIER ============ */
.idata-header-sticky-no .idata-header-area { position: relative; }
.idata-header__logo-text {
  font-size: 1.35rem;
  font-weight: var(--idata-font-weight-bold);
  color: var(--idata-primary);
  letter-spacing: -0.01em;
}