header{
  position:fixed;top:0;left:0;right:0;z-index:500;
  padding:0 40px;height:64px;

  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  background:rgba(13,18,40,0.6);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border-bottom:1px solid var(--border);
  transition:background var(--transition),border var(--transition);
}

header > .logo{justify-self:start;}

header > nav#main-nav{justify-self:center;}

header > .header-right,
header > #auth-buttons,
header > .user-menu{justify-self:end;}
[data-theme="day"] header{background:rgba(245,237,216,0.6);}

.logo{
  font-family:var(--font-display);
  font-size:1.5rem;font-weight:700;
  color:var(--text);
  display:flex;align-items:center;gap:2px;
  letter-spacing:0.5px;
}
.logo-owl{font-size:1.4rem;}
.logo span{color:var(--text);}
.logo span span{color:var(--accent);}

nav#main-nav{display:flex;align-items:center;gap:8px;}
.nav-link{
  padding:8px 14px;border-radius:8px;
  font-size:0.9rem;font-weight:500;
  color:var(--text2);
  background:none;border:none;
  transition:color 0.2s,background 0.2s;
}
.nav-link:hover,.nav-link.active{color:var(--text);background:rgba(255,255,255,0.07);}
[data-theme="day"] .nav-link:hover,
[data-theme="day"] .nav-link.active{background:rgba(0,0,0,0.06);}

.header-right{display:flex;align-items:center;gap:10px;}

.theme-btn{
  position:relative;
  background:none;border:1px solid var(--border);
  border-radius:20px;padding:6px 12px;
  color:var(--text2);font-size:0.85rem;
  display:flex;align-items:center;gap:6px;
  transition:border 0.2s;
}
.theme-btn:hover{border-color:var(--accent);}
#theme-label{display:none;}
.theme-dropdown{
  position:absolute;top:calc(100% + 8px);right:0;
  background:var(--surface);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:12px;padding:6px;
  min-width:180px;
  opacity:0;pointer-events:none;
  transform:translateY(-8px);
  transition:opacity 0.2s,transform 0.2s;
  box-shadow:0 12px 40px var(--shadow);
  z-index:600;
}
.theme-dropdown.open{opacity:1;pointer-events:all;transform:translateY(0);}
.theme-opt{
  display:flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:8px;
  font-size:0.87rem;color:var(--text);
  background:none;border:none;width:100%;text-align:left;
  transition:background 0.15s;
}
.theme-opt:hover{background:rgba(255,255,255,0.07);}
[data-theme="day"] .theme-opt:hover{background:rgba(0,0,0,0.06);}
.theme-opt.active{color:var(--accent);font-weight:500;}

.user-menu{position:relative;}
.user-menu-trigger{
  display:flex;align-items:center;gap:8px;
  padding:5px 12px 5px 5px;border-radius:30px;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--border);
  color:var(--text);font-size:0.88rem;font-weight:500;
  transition:border 0.2s,background 0.2s;
}
.user-menu-trigger:hover{border-color:var(--accent);}
.user-avatar-sm{
  width:30px;height:30px;border-radius:50%;
  background:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:0.85rem;font-weight:700;color:#fff;
  background-size:cover;background-position:center;
  flex-shrink:0;
}
.user-dropdown{
  position:absolute;top:calc(100% + 10px);right:0;
  min-width:220px;
  background:var(--surface);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:14px;padding:8px;
  opacity:0;pointer-events:none;
  transform:translateY(-8px);
  transition:opacity 0.2s,transform 0.2s;
  box-shadow:0 16px 48px var(--shadow);
  z-index:600;
}
.user-dropdown.open{opacity:1;pointer-events:all;transform:translateY(0);}
.user-dropdown a{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:8px;
  font-size:0.88rem;color:var(--text);
  transition:background 0.15s;
  position:relative;
}
.user-dropdown a:hover{background:rgba(255,255,255,0.07);}
[data-theme="day"] .user-dropdown a:hover{background:rgba(0,0,0,0.05);}
.user-dropdown-divider{height:1px;background:var(--border);margin:6px 4px;}
.notif-badge{
  margin-left:auto;background:var(--accent);color:#fff;
  font-size:0.68rem;font-weight:700;
  padding:1px 6px;border-radius:10px;
}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:4px;}
.burger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:0.3s;}

.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.active span:nth-child(2){opacity:0;}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@keyframes navLinkIn{
  from{opacity:0;transform:translateX(-12px);}
  to{opacity:1;transform:translateX(0);}
}

@media(max-width:768px){
  header{padding:0 14px;display:flex;justify-content:space-between;}
  nav#main-nav{
    display:flex;flex-direction:column;

    position:fixed;top:60px;right:10px;left:auto;
    min-width:180px;max-width:70vw;
    background:var(--bg);border:1px solid var(--border);
    border-radius:14px;
    padding:0 8px;gap:2px;align-items:stretch;

    max-height:0;overflow:hidden;opacity:0;
    transform:translateY(-8px) scale(0.96);transform-origin:top right;
    pointer-events:none;
    transition:max-height 0.3s ease, opacity 0.22s ease, transform 0.22s ease, padding 0.3s ease;
    box-shadow:0 16px 40px var(--shadow);
  }
  nav#main-nav.open{
    max-height:480px;opacity:1;transform:translateY(0) scale(1);
    pointer-events:all;padding:8px;
  }

  nav#main-nav.open .nav-link{
    animation:navLinkIn 0.3s ease both;
  }
  nav#main-nav.open .nav-link:nth-child(1){animation-delay:0.04s;}
  nav#main-nav.open .nav-link:nth-child(2){animation-delay:0.09s;}
  nav#main-nav.open .nav-link:nth-child(3){animation-delay:0.14s;}
  nav#main-nav.open .nav-link:nth-child(4){animation-delay:0.19s;}
  nav#main-nav.open .nav-link:nth-child(5){animation-delay:0.24s;}
  nav#main-nav.open .nav-link:nth-child(6){animation-delay:0.29s;}
  nav#main-nav.open .nav-link:nth-child(7){animation-delay:0.34s;}
  nav#main-nav.open .nav-link:nth-child(8){animation-delay:0.39s;}
  nav#main-nav.open .nav-link:nth-child(9){animation-delay:0.44s;}
  nav#main-nav.open .nav-link:nth-child(10){animation-delay:0.49s;}
  .nav-link{text-align:left;padding:11px 14px;border-radius:8px;}
  .nav-link:hover{background:rgba(255,255,255,0.06);}
  .burger{display:flex;}
  .user-nick{display:none;}

  .header-right{gap:6px;}
  .header-icon-btn{width:34px;height:34px;font-size:0.95rem;}
  .logo span:last-child{font-size:0.95rem;}

  #auth-buttons{display:flex;gap:6px;}
  #auth-buttons .btn-outline,
  #auth-buttons .btn-filled{
    padding:6px 10px;font-size:0.78rem;white-space:nowrap;
  }

  .theme-btn{padding:5px 8px;font-size:0.78rem;}
  .theme-btn span{display:none;}
}

@media(max-width:380px){
  .header-right{gap:4px;}
  #auth-buttons .btn-outline,
  #auth-buttons .btn-filled{padding:6px 8px;font-size:0.72rem;}
}

.nav-report-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:#e25555;color:#fff;font-size:0.7rem;font-weight:700;line-height:1;margin-left:4px;vertical-align:middle;}

.header-icon-btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;color:var(--text2);font-size:1rem;
  border:1px solid transparent;transition:all 0.18s;flex-shrink:0;
}
.header-icon-btn:hover{color:var(--text);background:rgba(255,255,255,0.06);}
.header-icon-btn.active{color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent);}
[data-theme="day"] .header-icon-btn:hover{background:rgba(0,0,0,0.05);}
.header-icon-btn .msg-nav-badge{
  position:absolute;top:-2px;right:-2px;margin:0;min-width:16px;height:16px;
  padding:0 4px;font-size:0.62rem;

  border:none;box-shadow:none;
}