/* ============================================================
   USDT Casinos — header.css (sticky header, nav, dropdowns, burger)
   ============================================================ */

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7, 20, 16, .86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(38, 161, 123, .22);
}
.site-header__inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}

/* --- Logo --- */
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo__coin {
  width: 38px; height: 38px; border-radius: 50%; flex: 0 0 auto;
  display: grid; place-items: center;
  background: radial-gradient(circle at 32% 28%, #3CD3A6, var(--tether) 58%, var(--tether-deep));
  color: #fff; font-family: var(--font-head); font-weight: 700; font-size: 21px;
  box-shadow: 0 4px 14px rgba(38, 161, 123, .45), inset 0 -2px 6px rgba(0,0,0,.18);
}
.logo__text {
  font-family: var(--font-head); font-weight: 700; font-size: 19px; letter-spacing: -.01em;
  color: var(--text-inv); line-height: 1.05;
}
.logo__text b { color: #4CD9AE; font-weight: 700; }
.logo__leaf {
  width: 22px; height: 22px; color: #E8162F; flex: 0 0 auto;
  filter: drop-shadow(0 2px 5px rgba(216,6,33,.75)) drop-shadow(0 0 2px rgba(216,6,33,.4));
}
.logo__text-col { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.logo__country {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-head); font-weight: 700; font-size: 9.5px;
  letter-spacing: .16em; text-transform: uppercase;
  color: #FF6B7C;
  border: 1px solid rgba(216, 6, 33, .45);
  background: rgba(216, 6, 33, .12);
  padding: 3px 9px; border-radius: 999px; line-height: 1;
}
.logo__country-leaf { width: 11px; height: 11px; color: #E8162F; flex: 0 0 auto; }

/* --- Desktop nav --- */
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-item__btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 14px; border-radius: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: 14.5px;
  color: var(--text-inv-soft);
  transition: color .18s ease, background .18s ease;
}
.nav-item__btn:hover, .nav-item:focus-within .nav-item__btn, .nav-item:hover .nav-item__btn {
  color: #fff; background: rgba(38, 161, 123, .14);
}
.nav-item__chev { width: 14px; height: 14px; transition: transform .2s ease; }
.nav-item:hover .nav-item__chev, .nav-item:focus-within .nav-item__chev { transform: rotate(180deg); }
.nav-link {
  padding: 10px 14px; border-radius: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: 14.5px; color: var(--text-inv-soft);
}
.nav-link:hover { color: #fff; background: rgba(38, 161, 123, .14); }

/* Dropdown */
.nav-drop {
  position: absolute; top: calc(100% + 10px); left: 0; min-width: 270px;
  background: rgba(10, 28, 22, .97);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border: 1px solid rgba(38, 161, 123, .3);
  border-radius: 16px; padding: 10px;
  box-shadow: var(--shadow-l);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}
.nav-item:hover .nav-drop, .nav-item:focus-within .nav-drop { opacity: 1; visibility: visible; transform: none; }
.nav-drop ul { list-style: none; padding: 0; margin: 0; }
.nav-drop li { margin: 0; }
.nav-drop a {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 9px 12px; border-radius: 10px;
  color: var(--text-inv-soft); font-size: 14px; font-weight: 500;
  transition: background .15s ease, color .15s ease, padding-left .15s ease;
}
.nav-drop a:hover { background: rgba(38, 161, 123, .16); color: #fff; padding-left: 16px; }
.nav-drop a::after {
  content: "→"; opacity: 0; color: #4CD9AE; transition: opacity .15s ease;
}
.nav-drop a:hover::after { opacity: 1; }

/* Header CTA */
.header-cta { display: inline-flex; }

/* --- Burger --- */
.burger {
  display: none; width: 44px; height: 44px; border-radius: 12px;
  border: 1px solid rgba(38, 161, 123, .35);
  position: relative; z-index: 130;
}
.burger span {
  position: absolute; left: 12px; right: 12px; height: 2px; border-radius: 2px;
  background: var(--text-inv); transition: transform .25s ease, opacity .2s ease, top .25s ease;
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 27px; }
.burger.is-active span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.burger.is-active span:nth-child(2) { opacity: 0; }
.burger.is-active span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* --- Mobile menu --- */
.mobile-menu {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 120;
  background: linear-gradient(170deg, var(--ink-900), var(--ink-850));
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 20px 20px 48px;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.mobile-menu.is-open { opacity: 1; visibility: visible; transform: none; }
.mobile-menu__group { border-bottom: 1px solid rgba(38, 161, 123, .16); }
.mobile-menu__group-btn {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 17px 4px;
  font-family: var(--font-head); font-weight: 700; font-size: 17px; color: var(--text-inv);
}
.mobile-menu__group-btn .nav-item__chev { width: 18px; height: 18px; color: #4CD9AE; }
.mobile-menu__group.is-open .mobile-menu__group-btn .nav-item__chev { transform: rotate(180deg); }
.mobile-menu__list {
  list-style: none; padding: 0 0 8px; margin: 0;
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.mobile-menu__group.is-open .mobile-menu__list { max-height: 700px; }
.mobile-menu__list li { margin: 0; }
.mobile-menu__list a {
  display: block; padding: 11px 14px; border-radius: 10px;
  color: var(--text-inv-soft); font-size: 15px;
}
.mobile-menu__list a:hover, .mobile-menu__list a:active { background: rgba(38, 161, 123, .15); color: #fff; }
.mobile-menu__link {
  display: block; padding: 17px 4px;
  font-family: var(--font-head); font-weight: 700; font-size: 17px; color: var(--text-inv);
  border-bottom: 1px solid rgba(38, 161, 123, .16);
}
.mobile-menu__cta { margin-top: 22px; }

body.menu-lock { overflow: hidden; }

/* --- Responsive --- */
@media (max-width: 1023px) {
  .main-nav, .header-cta { display: none; }
  .burger { display: block; }
}
@media (min-width: 1024px) {
  .mobile-menu { display: none; }
}