/* ===== HEADER ===== */
header {
  width: 100%;
  display: flex;
  align-items: center;
  background: #0f1f33; /* deep midnight blue */
  color: #ffffff;
  padding: 12px 24px;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  width: 100%;
}

header .logo img {
  height: 48px;
  cursor: pointer;
}

.main-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

header nav a {
  color: #ffffff;
  margin-left: 30px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

header nav a:hover,
header nav a.active {
  color: #1ec8c8; /* teal-cyan highlight */
  text-decoration: underline;
}

#google-login-container {
  text-align: center;
}

#header-login-btn,
#header-logout-btn {
  padding: 10px 22px;
  background-color: #1ec8c8;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-left: 12px;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

#header-login-btn:hover,
#header-logout-btn:hover {
  background-color: #17b4b4;
}