:root {
  --brand: #37440d;
  --brand-dark: #25300a;
  --surface: #f8f9fa;
  --text: #333333;
}

body {
  margin: 0;
  font-family: "Montserrat", "Segoe UI", Arial, sans-serif;
  background-color: var(--surface);
  color: var(--text);
}

.top-bar {
  width: 100%;
  height: 8px;
  background: var(--brand);
}

.site-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-top: 64px;
  gap: 12px;
}

.site-title {
  margin-bottom: 0;
}

.site-title h1 {
  line-height: 1.15;
}

.subtitle {
  color: #555555;
}

@media (min-width: 768px) {
  .site-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    margin-top: 80px;
    gap: 0;
  }

  .site-title {
    flex: 1 1 0%;
    text-align: left;
  }

  .site-logo {
    margin-left: 24px;
    margin-bottom: 0;
    align-self: center;
  }
}

.align-navbar-left {
  padding-left: 0;
  padding-right: 0;
}

.align-navbar-left .navbar-nav {
  margin-left: 0;
  padding-left: 0;
}

nav.navbar {
  background-color: #f8f9fa;
  border: 2px solid var(--brand);
  border-radius: 4px;
  box-sizing: border-box;
  padding: 0.55rem 0.75rem;
}

#navbarNav {
  justify-content: flex-start;
}

.navbar .navbar-nav {
  gap: 0.2rem;
  flex-wrap: wrap;
}

.navbar .navbar-nav .nav-item {
  margin: 0;
}

.navbar .navbar-nav .nav-link {
  display: inline-block;
  color: var(--brand);
  font-weight: 600;
  border: 0;
  border-radius: 0;
  background-color: transparent;
  padding: 0.5rem 0.65rem;
  line-height: 1.2;
  transition: color 0.18s ease;
}

.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:focus {
  color: var(--brand-dark);
  background-color: transparent;
  text-decoration: underline;
}

@media (max-width: 991.98px) {
  .navbar .navbar-nav {
    width: 100%;
    margin-top: 0.75rem;
    gap: 0;
  }

  .navbar .navbar-nav .nav-link {
    display: block;
    width: auto;
    text-align: left;
  }
}

.navbar-light .navbar-toggler {
  border-color: var(--brand);
  background-color: var(--brand);
}

.navbar-light .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba%28255,255,255,1%29' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

#backToTopBtn {
  display: none;
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  font-size: 22px;
  background: var(--brand);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: background 0.2s ease;
}

#backToTopBtn:hover {
  background: var(--brand-dark);
}