/* ============================================================
   GOP — Navbar & Navigation System
   ============================================================ */

/* ============================================================
   Top Bar (Breaking News + Social + Language + Donate)
   ============================================================ */
.topbar {
  height: var(--topbar-height);
  background: linear-gradient(90deg, #022216 0%, #002A1E 50%, #0A1F16 100%);
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-xs);
  overflow: hidden;
  z-index: 1001;
  position: relative;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

/* Breaking News Ticker */
.topbar__ticker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  overflow: hidden;
}

.topbar__ticker-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-red);
  color: white;
  padding: 2px var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: var(--weight-bold);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(232,25,44,0.4);
}

.ticker-scroll {
  overflow: hidden;
  flex: 1;
  position: relative;
}

.ticker-scroll__inner {
  display: flex;
  gap: var(--space-12);
  animation: ticker-scroll 30s linear infinite;
  white-space: nowrap;
}

.ticker-scroll__inner:hover {
  animation-play-state: paused;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.9);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.ticker-item:hover { color: white; }
.ticker-item::before {
  content: '';
  display: block;
  width: 5px;
  height: 5px;
  background: var(--color-red);
  border-radius: 50%;
  opacity: 0.8;
  flex-shrink: 0;
}

@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Topbar Right */
.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.topbar__social {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar__social a {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.topbar__social a:hover {
  color: white;
  transform: translateY(-1px);
}

.topbar__divider {
  width: 1px;
  height: 16px;
  background: rgba(255,255,255,0.15);
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  padding: 2px;
  gap: 2px;
  border: 1px solid rgba(255,255,255,0.1);
}

.lang-toggle__btn {
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-toggle__btn.active {
  background: var(--color-white);
  color: var(--color-green);
}

.lang-toggle__btn:hover:not(.active) {
  color: white;
}

/* Topbar Donate */
.topbar__donate {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-red);
  color: white;
  padding: 3px var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(232,25,44,0.35);
}

.topbar__donate:hover {
  background: var(--color-red-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232,25,44,0.45);
}

/* ============================================================
   Main Navigation
   ============================================================ */
.navbar {
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 4px 24px -6px rgba(0, 0, 0, 0.03);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition-base),
              background var(--transition-base),
              border-color var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
  border-bottom-color: transparent;
}

/* Scroll Progress Bar in Navbar */
.navbar__progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: var(--scroll-pct, 0%);
  background: linear-gradient(90deg, var(--color-green), var(--color-red));
  transition: width 0.08s linear;
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.navbar__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.navbar__logo-text .logo-bn {
  font-family: var(--font-bengali);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-green);
}

.navbar__logo-text .logo-en {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* Main Menu */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  justify-content: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-green);
  background: var(--color-green-light);
}

.nav-link .chevron {
  font-size: 9px;
  transition: transform var(--transition-fast);
  opacity: 0.5;
  color: var(--color-text-muted);
}

.nav-item:hover > .nav-link .chevron,
.nav-item.open > .nav-link .chevron {
  transform: rotate(180deg);
  opacity: 1;
}

/* ============================================================
   Mega Menu / Dropdown
   ============================================================ */
.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-xl);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-base),
              transform var(--transition-base),
              visibility var(--transition-base);
  z-index: 999;
  padding: var(--space-2);
}

.nav-item:hover > .dropdown,
.nav-item.open > .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.dropdown__item:hover {
  background: var(--color-green-light);
  color: var(--color-green);
  padding-left: calc(var(--space-4) + 4px);
}

.dropdown__item-icon {
  width: 32px;
  height: 32px;
  background: var(--color-green-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-green);
  font-size: 13px;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.dropdown__item:hover .dropdown__item-icon {
  background: var(--color-green);
  color: white;
}

.dropdown__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) var(--space-4);
}

/* Mega menu (wide) */
.dropdown--mega {
  width: 100%;
  max-width: 480px;
  left: 0;
  transform: none;
  padding: var(--space-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

@media (max-width: 480px) {
  .dropdown--mega {
    grid-template-columns: 1fr;
  }
}

.nav-item:hover > .dropdown--mega,
.nav-item.open > .dropdown--mega {
  transform: none;
}

.dropdown__col-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
  grid-column: 1 / -1;
}

/* ============================================================
   Navbar Actions (Search + CTA)
   ============================================================ */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Search */
.search-trigger {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 14px;
}

.search-trigger:hover {
  background: var(--color-green-light);
  color: var(--color-green);
  border-color: var(--color-green);
  transform: translateY(-1px);
}

/* Search Overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 120px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.search-overlay.open {
  opacity: 1;
  visibility: visible;
}

.search-box {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-4) var(--space-6);
  width: 100%;
  max-width: 640px;
  margin-inline: var(--space-4);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  animation: searchSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes searchSlideIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

.search-box__input-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.search-box__icon {
  color: var(--color-green);
  font-size: 18px;
  flex-shrink: 0;
}

.search-box__input {
  flex: 1;
  border: none;
  outline: none;
  font-size: var(--text-xl);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  background: transparent;
}

.search-box__input::placeholder {
  color: var(--color-text-light);
}

.search-box__close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.search-box__close:hover {
  color: var(--color-red);
  background: var(--color-red-light);
  border-color: var(--color-red-light);
}

.search-box__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-3) 0;
}

.search-box__suggestions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.search-suggestion {
  padding: 4px var(--space-3);
  background: var(--color-green-light);
  color: var(--color-green);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.search-suggestion:hover {
  background: var(--color-green);
  color: white;
  transform: translateY(-1px);
}

/* Join Button */
.btn-join {
  background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
  color: white;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 2px solid transparent;
  box-shadow: 0 3px 12px var(--color-green-glow);
}

.btn-join:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-green-glow);
  filter: brightness(1.08);
}

/* ============================================================
   Mobile Navigation
   ============================================================ */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.hamburger:hover {
  background: var(--color-green-light);
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.hamburger.open .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 320px;
  max-width: 90vw;
  background: var(--color-white);
  box-shadow: -8px 0 48px rgba(0,0,0,0.18);
  z-index: 1999;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(3px);
}

.mobile-drawer__overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  background: var(--color-green-pale);
}

.mobile-drawer__close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.mobile-drawer__close:hover {
  background: var(--color-red-light);
  color: var(--color-red);
}

.mobile-drawer__nav {
  padding: var(--space-4);
  flex: 1;
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition-fast);
  border-radius: var(--radius-md);
}

.mobile-nav-link:hover { color: var(--color-green); }

.mobile-subnav {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  background: var(--color-green-pale);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}

.mobile-subnav.open {
  max-height: 400px;
}

.mobile-subnav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.mobile-subnav a::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--color-green);
  border-radius: 50%;
  flex-shrink: 0;
  opacity: 0.6;
}

.mobile-subnav a:hover { color: var(--color-green); }

.mobile-drawer__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex-shrink: 0;
  background: var(--color-bg);
}

.mobile-drawer__social {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

.mobile-drawer__social a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--color-white);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.mobile-drawer__social a:hover {
  background: var(--color-green);
  color: white;
  border-color: var(--color-green);
  transform: translateY(-2px);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .navbar__menu { display: none; }
  .hamburger    { display: flex; }
  .btn-join     { display: none; }
  .search-trigger { display: flex; }
}

@media (max-width: 640px) {
  .topbar__social  { display: none; }
  .topbar__divider { display: none; }
}

@media (max-width: 480px) {
  .topbar__donate { display: none; }
}