.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  height: 8vh;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-soft);
  padding: 4px calc(var(--gutter));
  transition: all 0.3s ease-in-out;
}

/* === Left, Center, Right === */
.nav-left {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* === Nav Logo === */
.nav-logo {
  height: 64px;              /* fits nicely in 8vh navbar */
  width: auto;
  object-fit: contain;
  /* border-radius: 2px; */
  transition: transform 0.3s ease, filter 0.3s ease;
  cursor: pointer;
}

/* subtle hover zoom */
.nav-logo:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}



/* Dark theme version (optional if your logo has light bg) */
body.dark-theme .nav-logo {
  filter: brightness(0.8) contrast(1.2);
}


.nav-center {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 22px;
}

.nav-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
}


.nav-right form{
  display:inline;
}



.gradient-purple{color:var(--gradient-purple);}

/* === Links === */
.nav-center a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 10px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.nav-center a:hover {
  color: var(--color-primary);
  background: var(--glass-bg);
  border: var(--glass-border);
}

/* === Theme Button === */
.btn-theme-toggle {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 6px 14px;
  color: var(--color-text);
  background: transparent;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}


/* === Login & Logout Buttons === */
.btn-login,
.btn-logout {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Login button */
.btn-login {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
}



/* Logout button */
.btn-logout {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}



/* Button transitions for theme switching */
[data-theme="light"] .btn-login {
  box-shadow: 0 0 10px rgba(117, 81, 255, 0.4);
}

[data-theme="light"] .btn-logout {
  color: var(--color-heading);
  border-color: var(--color-border);
}

.btn-logout:hover {
  background: var(--glass-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}


.btn-login:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 10px rgba(117, 81, 255, 0.7);
}

/* === Mobile Menu Toggle === */
/* Remove default button border and background */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: none;            /* remove default border */
  outline: none;           /* remove focus border */
  cursor: pointer;
  padding: 0;              /* prevent extra spacing */
}

/* Bars styling */
.menu-toggle .bar {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.3s ease;
  border: none;
}

/* === Animate bars into a cross === */
.menu-toggle.open .bar:nth-child(1) {
  transform: rotate(45deg) translateY(6px);
}

.menu-toggle.open .bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open .bar:nth-child(3) {
  transform: rotate(-45deg) translateY(-6px);
}


/* === Responsive === */
@media (max-width: 850px) {
  .nav-center {
    position: absolute;
    top: 70px;
    right: 25px;
    background: var(--color-surface);
    flex-direction: column;
    gap: 18px;
    width: 220px;
    padding: 18px;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    transform: translateX(120%);
    transition: transform 0.3s ease;
  }

  .nav-center.active {
    transform: translateX(0);
  }

  .menu-toggle {
    display: flex;
  }
}