body {
  background: linear-gradient(135deg, #232526 0%, #414345 100%);
  font-family: "Segoe UI", "Roboto", "Arial", sans-serif;
  color: #f4f4f4;
  letter-spacing: 0.5px;
  min-height: 100vh;
}

h1,
h2 {
  font-weight: 700;
  color: #00e6a2;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

#logo {
  position: absolute;
  top: 50px;
  left: 40px;
  margin: 0 0 0 10px;
  width: 90px;
  height: 90px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

#wrapper {
  width: 92%;
  max-width: 800px;
  margin: 32px auto;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
  padding: 0 0 32px;
  border-radius: 18px;
  background: rgba(44, 62, 80, 0.92);
  border: 1px solid rgba(0, 230, 162, 0.12);
}

#page-top {
  background: linear-gradient(90deg, #00e6a2 0%, #32c77d 100%);
  padding: 18px 0px 12px 0px;
  border-radius: 18px 18px 0 0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

#page-top h1,
#page-top p {
  text-align: center;
  margin: 0.5em 0;
  color: #232526;
}

#page-top input[type="text"] {
  width: 90%;
  max-width: 250px;
  margin: 20px auto;
  display: block;
  padding: 8px;
  border: 1px solid rgb(221, 221, 221, 0.7);
  font-size: 1em;
  color: rgb(49, 49, 49);
}

#check {
  max-width: 280px;
  margin: 10px auto;
  text-align: center;
  color: #0f9069;
}

#check #show-hide {
  width: 10%;
  margin: 0;
  display: inline-block;
  cursor: pointer;
  background: #232526;
  color: #00e6a2;
  border: 1px solid #00e6a2;
  border-radius: 6px;
  padding: 4px 10px;
  transition: background 0.2s, color 0.2s;
}
#check #show-hide:hover {
  background: #00e6a2;
  color: #232526;
}

#add-item {
  width: 420px;
  margin: 0 auto;
  display: flex;
  /* flex-direction: column; */
  justify-content: center;
  align-items: center;
  background: rgba(0, 230, 162, 0.08);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 0px 10px 10px 10px;
}

#add-item input[type="text"] {
  width: 280px;
  display: block;
  margin: 20px 1px 0 0;
  padding: 0.7em;
  border: 1.5px solid #00e6a2;
  font-size: 1.08em;
  border-radius: 8px 0 0 8px;
  float: left;
  background: #f4f4f4;
  color: #232526;
  transition: border 0.2s;
}
#add-item input[type="text"]:focus {
  border: 2px solid #32c77d;
  outline: none;
}

#add-item button {
  width: 110px;
  cursor: pointer;
  color: #232526;
  background: linear-gradient(90deg, #00e6a2 0%, #32c77d 100%);
  padding: 0.7em 20px;
  border: none;
  font-size: 1.08em;
  margin: 20px 0 0 0;
  border-radius: 0 8px 8px 0;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: background 0.2s, color 0.2s;
}
#add-item button:hover {
  background: linear-gradient(90deg, #32c77d 0%, #00e6a2 100%);
  color: #f4f4f4;
}

#list {
  margin: 2em;
  background: rgba(44, 62, 80, 0.85);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 1em 0.5em;
}

#list ul {
  list-style: none;
  padding: 0;
}

#list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1em 1.2em;
  border-left: 5px solid #00e6a2;
  margin: 1.2em 1em;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  color: #f4f4f4;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  transition: border 0.2s, background 0.2s;
}

#list li:hover {
  border-color: #32c77d;
  background: rgba(0, 230, 162, 0.1);
}

.delete {
  background: linear-gradient(90deg, #ff5858 0%, #f857a6 100%);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  color: #fff;
  font-weight: 600;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: background 0.2s, color 0.2s;
  align-self: center;
  margin-left: 16px;
}

.delete:hover {
  background: linear-gradient(90deg, #f857a6 0%, #ff5858 100%);
  color: #fff;
}

.hidden {
  display: none;
}

/* Responsive styles for mobile devices */
@media (max-width: 600px) {
  @media (max-width: 1200px) and (min-width: 601px) {
    #logo {
      width: 45px;
      height: 45px;
      top: 12px;
      left: 12px;
      margin: 0;
    }
    #wrapper {
      width: 98%;
      max-width: 98vw;
      margin: 16px auto;
      padding: 0 0 20px;
      border-radius: 14px;
    }
    #page-top {
      padding: 14px 0 10px 0;
      border-radius: 14px 14px 0 0;
    }
    #page-top h1 {
      font-size: 1.7em;
    }
    #page-top input[type="text"] {
      max-width: 60vw;
      font-size: 1.08em;
      padding: 10px;
    }
    #add-item {
      width: 60vw;
      flex-direction: row;
      align-items: center;
      padding: 10px 2vw 10px 2vw;
    }
    #add-item input[type="text"] {
      width: 60%;
      margin: 12px 0 0 0;
      font-size: 1.08em;
      border-radius: 8px 0 0 8px;
      float: left;
    }
    #add-item button {
      width: 40%;
      margin: 12px 0 0 0;
      border-radius: 0 8px 8px 0;
      font-size: 1.08em;
      padding: 0.7em 0;
    }
    #list {
      margin: 1.5em 0.5em;
      padding: 0.7em 0.2em;
      border-radius: 12px;
    }
    #list li {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
      padding: 0.9em 1em;
      margin: 0.9em 0.5em;
      font-size: 1.08em;
    }
    .delete {
      margin-left: 18px;
      margin-top: 0;
      width: auto;
      align-self: center;
      font-size: 1.08em;
      padding: 8px 18px;
      display: block;
    }
  }
  #logo {
    width: 64px;
    height: 64px;
    top: 15px;
    left: 18px;
    margin: 0;
  }
  #wrapper {
    width: 99%;
    max-width: 100vw;
    margin: 8px auto;
    padding: 0 0 12px;
    border-radius: 10px;
  }
  #page-top {
    padding: 10px 0 8px 0;
    border-radius: 10px 10px 0 0;
  }
  #page-top h1 {
    font-size: 1.3em;
  }
  #page-top input[type="text"] {
    max-width: 98vw;
    font-size: 1em;
    padding: 8px;
  }
  #add-item {
    width: 100%;
    max-width: 91vw;
    box-sizing: border-box;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
  }
  #add-item input[type="text"] {
    width: 100%;
    margin: 12px 0 0 0;
    font-size: 1em;
    border-radius: 8px 8px 0 0;
    float: none;
    box-sizing: border-box;
  }
  #add-item button {
    width: 100%;
    margin: 8px 0 0 0;
    border-radius: 0 0 8px 8px;
    font-size: 1em;
    padding: 0.7em 0;
    box-sizing: border-box;
  }
  #list {
    margin: 1em 0.2em;
    padding: 0.5em 0.1em;
    border-radius: 10px;
  }
  #list li {
    /* flex-direction: column; */
    align-items: stretch;
    padding: 0.7em 0.7em;
    margin: 0.7em 0.7em;
    font-size: 1em;
  }
  .delete {
    margin-left: auto;
    margin-top: 0;
    width: auto;
    align-self: flex-end;
    font-size: 1em;
    padding: 10px 18px;
    display: block;
  }
}