* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

body {
    height: 100vh;
    background: linear-gradient(145deg, #0f0f0f, #1c1c1c);
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-container {
    width: 700px;
    padding: 40px;
    border-radius: 25px;
    background: #1a1a1a;
    box-shadow: 
        8px 8px 20px #0d0d0d,
        -8px -8px 20px #2a2a2a;
        position: relative;
}

.main-heading {
    text-align: center;
    margin-bottom: 25px;
    color: silver;
    letter-spacing: 2px;
    
}

textarea {
    width: 100%;
    height: 200px;
    padding: 20px;
    border-radius: 20px;
    border: none;
    outline: none;
    resize: none;
    font-size: 18px;
    background: #1a1a1a;
    color: silver;
    box-shadow:
        inset 6px 6px 12px #0d0d0d,
        inset -6px -6px 12px #2a2a2a;
}

.buttons-container {
    margin-top: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

button {
    width: 55px;
    height: 55px;
    border-radius: 15px;
    border: none;
    background: #1a1a1a;
    color: silver;
    font-size: 18px;
    cursor: pointer;
    transition: 0.2s ease;
    box-shadow:
        6px 6px 12px #0d0d0d,
        -6px -6px 12px #2a2a2a;
}

button:hover {
    transform: scale(1.05);
}

button:active {
    box-shadow:
        inset 6px 6px 12px #0d0d0d,
        inset -6px -6px 12px #2a2a2a;
}

input[type="color"] {
    width: 60px;
    height: 55px;
    border-radius: 15px;
    border: none;
    background: #1a1a1a;
    cursor: pointer;
    box-shadow:
        6px 6px 12px #0d0d0d,
        -6px -6px 12px #2a2a2a;
}


.switch {
  font-size: 17px;
  position: relative;
  display: inline-block;
  width: 3.5em;
  height: 2em;
  position: absolute;
  right: 3%;
  top: 4%;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  box-shadow: inset 2px 5px 10px rgba(0,0,0,0.3);
  transition: .4s;
  border-radius: 5px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 1.4em;
  width: 0.1em;
  border-radius: 0px;
  left: 0.3em;
  bottom: 0.3em;
  background-color: white;
  transition: .4s;
}

input:checked + .slider {
  background-color: #171717;
  box-shadow: inset 2px 5px 10px rgb(0, 0, 0);
}

input:checked + .slider:before {
  transform: translateX(2.8em) rotate(360deg);
}




.light-mode{
  background: linear-gradient(145deg,#f4f6fb,#e6ebf5);
}

.light-mode .main-container{
  background:#f4f6fb;

box-shadow: 10px 10px 25px #c8ceda,
           -10px -10px 25px #ffffff;
}

.light-mode textarea{
  background:#f4f6fb;
  color:#2c2c2c;
  box-shadow: inset 6px 6px 12px #c8ceda,
              inset -6px -6px 12px #e6e5e5;
}

.light-mode button{
  background:#f4f6fb;
  color:#333;
  box-shadow: 6px 6px 14px #c8ceda,
             -6px -6px 14px #ffffff;
}

.light-mode button:active{
  box-shadow: inset 6px 6px 12px #c8ceda,
              inset -6px -6px 12px #ffffff;
}

.light-mode input[type="color"]{
  background:#f4f6fb;
  box-shadow: 6px 6px 14px #c8ceda,
             -6px -6px 14px #ffffff;
}

.light-mode .main-heading{
  color:#2c2c2c;
}

.light-mode textarea::placeholder{
  color:#666;
}