/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
  background: rgba(18, 18, 20, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(18, 18, 20, 0.35);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
  user-select: none;
}

.brand-text {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0 auto;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.brand-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  overflow: hidden;
}

.brand-avatar img {
  width: 28%;
  height: 28%;
  object-fit: cover;
}

.brand-avatar:empty {
  background: var(--gradient-main);
  box-shadow: 0 0 14px rgba(88, 101, 242, 0.4);
}

.navbar-links a {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
  font-weight: 500;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--text-primary);
  background: var(--hover-bg);
}

.navbar-invite-desktop {
  display: inline-flex;
}

.btn-invite {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1.1rem;
  background: var(--gradient-main);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 0 18px rgba(88, 101, 242, 0.3);
  white-space: nowrap;
}

.btn-invite:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(88, 101, 242, 0.5);
  filter: brightness(1.1);
}

.btn-invite:active {
  transform: translateY(0);
}

/* ── Login Button ── */
.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-login:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: rgba(88, 101, 242, 0.1);
}

.navbar-login-desktop {
  display: inline-flex;
}

/* Brand avatar image */
.brand-avatar img {
  width: 87px;
  height: 87px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

/* Hamburger */
.navbar-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.4rem;
  background: none;
  border: none;
}

.navbar-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.navbar-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.navbar-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.navbar-mobile {
  display: none;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: rgba(18, 18, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sidebar-border);
  padding: 1rem 1.5rem 1.5rem;
  flex-direction: column;
  gap: 0.25rem;
  z-index: 999;
}

.navbar-mobile.open {
  display: flex;
}

.navbar-mobile a {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.navbar-mobile a:hover {
  color: var(--text-primary);
  background: var(--hover-bg);
}

.navbar-mobile .btn-invite {
  margin-top: 0.5rem;
  justify-content: center;
}

/* Mobile user info */
.mobile-user-info {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--sidebar-border);
  margin-bottom: 0.25rem;
}

.mobile-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}

.mobile-username {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

/* ── Language Switcher ── */
.nav-lang {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.55rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  line-height: 1;
}

.lang-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: rgba(88, 101, 242, 0.1);
}

.lang-chevron {
  transition: transform 0.2s ease;
}

.lang-toggle.open .lang-chevron {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background: rgba(24, 24, 27, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1100;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.lang-dropdown.open {
  display: flex;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  white-space: nowrap;
  text-align: left;
}

.lang-option:hover {
  color: var(--text-primary);
  background: var(--hover-bg);
}

.lang-option.active {
  color: var(--accent);
  background: rgba(88, 101, 242, 0.12);
}

.lang-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.6em;
  font-size: 0.85em;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ── Language Switcher (mobile) ── */
.mobile-lang-section {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--sidebar-border);
  margin-bottom: 0.25rem;
}

.mobile-lang-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mobile-lang-options {
  display: flex;
  gap: 0.35rem;
}

.lang-option.mobile {
  flex: 1;
  justify-content: center;
  padding: 0.6rem 0.5rem;
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.lang-option.mobile:hover {
  border-color: var(--accent);
}

.lang-option.mobile.active {
  border-color: var(--accent);
  background: rgba(88, 101, 242, 0.12);
}

/* ── User Avatar + Logout ── */
.navbar-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}

.navbar-logout-form {
  display: inline-flex;
  margin: 0;
  padding: 0;
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  background: transparent;
  color: #ED4245;
  border: 1px solid rgba(237, 66, 69, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: inherit;
}

.btn-logout:hover {
  background: rgba(237, 66, 69, 0.12);
  border-color: #ED4245;
}

/* Mobile logout */
.navbar-mobile-logout-form {
  margin: 0;
  padding: 0;
}

.navbar-mobile-logout-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: #ED4245;
  font-weight: 500;
  font-size: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.navbar-mobile-logout-btn:hover {
  color: #ff6b6b;
  background: rgba(237, 66, 69, 0.1);
}

@media (max-width: 768px) {
  .navbar-links,
  .navbar-invite-desktop,
  .navbar-login-desktop {
    display: none;
  }
  .navbar-hamburger {
    display: flex;
  }
}