/* Header Navigation */

.header {
  background-color: var(--md-sys-color-background);
  box-shadow: var(--md-sys-elevation-level2);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  position: relative;
}

.logo a {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo img {
  height: 48px;
  width: auto;
}

.logo h1 {
  color: var(--md-sys-color-primary);
  font-family: var(--md-sys-typescale-headline-small-font-family);
  font-size: var(--md-sys-typescale-headline-small-font-size);
  font-weight: var(--md-sys-typescale-headline-small-font-weight);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 2rem;
}

.nav-menu a {
  text-decoration: none;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-label-large-font-family);
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  transition: color 0.3s ease;
}

.nav-menu a:hover {
  color: var(--md-sys-color-primary);
}

.btn-login {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary) !important;
  padding: 12px 24px;
  border-radius: var(--md-sys-shape-corner-small);
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-login:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--md-sys-elevation-level2);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--md-sys-color-on-background);
  margin: 3px 0;
  transition: 0.3s;
}

/* Responsive - tablet */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 1rem;
  }

  .nav-menu a {
    font-size: 0.8125rem;
  }

  .btn-login {
    padding: 8px 16px;
  }
}

/* Responsive - mobile */
@media (max-width: 900px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--md-sys-color-background);
    flex-direction: column;
    padding: 1rem 0;
    box-shadow: var(--md-sys-elevation-level3);
    gap: 0;
  }

  .nav-menu li {
    width: 100%;
    text-align: center;
  }

  .nav-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    font-size: var(--md-sys-typescale-label-large-font-size);
    transition: background-color 0.2s ease;
  }

  .nav-menu a:hover {
    background-color: var(--md-sys-color-surface-variant);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu .btn-login,
  .nav-menu [class*="btn-signup"] {
    display: block !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 0 !important;
    border: none !important;
    background: transparent !important;
    color: var(--md-sys-color-on-surface-variant) !important;
    font-size: var(--md-sys-typescale-label-large-font-size) !important;
    font-weight: var(--md-sys-typescale-label-large-font-weight) !important;
    text-align: center;
    width: 100%;
    box-shadow: none !important;
    transform: none !important;
  }

  .nav-menu .btn-login:hover,
  .nav-menu [class*="btn-signup"]:hover {
    background: var(--md-sys-color-surface-variant) !important;
    color: var(--md-sys-color-primary) !important;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .logo h1 {
    font-size: var(--md-sys-typescale-title-large-font-size);
  }
}