*{
    margin: 0px;
    padding: 0px;
}

:root {
  --base-color: white;
  --base-variant: #e8e9ed;
  --text-color: #3a435d;
  --secondary-text: #232738;
  --primary-color: #3a435d;
  --accent-color: #0071ff;
}

.darkmode {
  --base-color: #070b1d;
  --base-variant: #101425;
  --text-color: #a4a5b8;
  --secondary-text: #a4a5b8;
  --primary-color: #3a435d;
  --accent-color: #0071ff;
}

body {
  background-color: var(--base-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: monospace;
  padding: 20px;
  overflow-x: hidden;
}

h1{
    font-size: clamp(2rem, 8vw, 4.375rem);
    margin-bottom: 1rem;
    text-align: center;
}

#contain{
  width: 100%;
  max-width: 800px;
  min-height: calc(100vh - 100px);
  background-color: var(--base-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

#display{
  margin-top: clamp(20px, 4vw, 30px);
  border: clamp(3px, 0.5vw, 5px) solid;
  padding: clamp(15px, 4vw, 30px);
  border-radius: clamp(25px, 6vw, 50px);
  font-size: clamp(2rem, 8vw, 5rem);
  font-family: monospace;
  font-weight: bold;
  color: hsl(0, 0%, 30%);
  text-shadow: 2px 2px 2px hsla(0, 0%, 0%, 0.75);
  margin-bottom: 20px;
  width: 100%;
  max-width: 600px;
  text-align: center;
  box-sizing: border-box;
  overflow: hidden;
}

#control{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(8px, 2vw, 10px);
  margin-top: clamp(30px, 6vw, 60px);
  width: 100%;
  max-width: 500px;
}

#control button{
  background-color: var(--accent-color);
  color: var(--base-color);
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: bold;
  padding: clamp(8px, 2vw, 10px) clamp(15px, 4vw, 20px);
  min-width: clamp(100px, 20vw, 125px);
  border: 2px solid var(--accent-color);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  flex: 1 1 auto;
  max-width: 150px;
}

#control button:hover{
  background-color: transparent;
  color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 113, 255, 0.3);
}

#control button:active{
  transform: translateY(0);
}

#theme-switch{
  height: clamp(40px, 8vw, 50px);
  width: clamp(40px, 8vw, 50px);
  padding: 0;
  border-radius: 50%;
  background-color: var(--base-variant);
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: clamp(15px, 3vw, 20px);
  right: clamp(15px, 3vw, 20px);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 1000;
}

#theme-switch:hover{
  transform: rotate(20deg) scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

#theme-switch svg{
  fill: var(--primary-color);
  width: clamp(20px, 4vw, 24px);
  height: clamp(20px, 4vw, 24px);
}

#theme-switch svg:last-child{
  display: none;
}

.darkmode #theme-switch svg:first-child{
  display: none;
}

.darkmode #theme-switch svg:last-child{
  display: block;
}

/* Media Queries for better control on specific breakpoints */

/* Small devices (phones, less than 576px) */
@media (max-width: 575px) {
  #display{
    font-size: 2.5rem;
    padding: 15px 10px;
  }
  
  #control{
    flex-direction: column;
    width: 90%;
  }
  
  #control button{
    width: 100%;
    max-width: 100%;
  }
  
  h1{
    font-size: 2.5rem;
  }
}

/* Medium devices (tablets, 576px to 768px) */
@media (min-width: 576px) and (max-width: 767px) {
  #display{
    font-size: 3.5rem;
  }
  
  h1{
    font-size: 3rem;
  }
}

/* Large devices (desktops, 768px and up) */
@media (min-width: 768px) {
  #control button{
    flex: 0 1 auto;
  }
}

/* Extra small devices in landscape */
@media (max-height: 500px) and (orientation: landscape) {
  #contain{
    min-height: auto;
    padding: 10px;
  }
  
  h1{
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  
  #display{
    margin-top: 10px;
    margin-bottom: 10px;
    padding: 10px;
    font-size: 2rem;
  }
  
  #control{
    margin-top: 15px;
  }
  
  #control button{
    padding: 6px 12px;
    font-size: 1rem;
    min-width: 90px;
  }
}