@import url("https://fonts.googleapis.com/css2?family=Orbitron&display=swap");

:root {
  --bg-gradient-dark: linear-gradient(
    135deg,
    #3a3a3a,
    #4a4a4a
  ); /* More grayish */
  --bg-gradient-light: linear-gradient(
    135deg,
    #f0f0f0,
    #dcdcdc
  ); /* Less bright */
  --text-color-dark: #ecf0f1;
  --text-color-light: #2c3e50;
  --header-bg-dark: #2e2e2e; /* More grayish */
  --header-bg-light: #c0c0c0; /* Less bright */
  --input-bg-dark: #4a4a4a; /* More grayish */
  --input-bg-light: #f0f0f0; /* Less bright */
  --input-border-dark: #6a6a6a; /* More grayish */
  --input-border-light: #b0b0b0; /* Less bright */
}

body {
  font-family: "Orbitron", sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: var(--bg-gradient-dark);
  color: var(--text-color-dark);
  transition: background-color 0.5s ease, color 0.5s ease;
  height: 100vh; /* Set body height to 100% of the viewport height */
  overflow: hidden; /* Prevent scrolling */
  display: flex;
  flex-direction: column;
}

body.light-mode {
  background: var(--bg-gradient-light);
  color: var(--text-color-light);
}

header {
  background-color: var(--header-bg-dark);
  color: #ffffff;
  text-align: center;
  padding: 1rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: background-color 0.5s ease, color 0.5s ease;
  flex-shrink: 0; /* Prevent header from shrinking */
}

body.light-mode header {
  background-color: var(--header-bg-light);
  color: var(--text-color-light);
}

h1 {
  margin: 0;
  font-weight: bold;
  font-size: 2.5rem;
}

main {
  padding: 1rem;
  max-width: 800px;
  margin: 0 auto;
  height: auto; /* Allow main height to adjust based on content */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex-grow: 1; /* Allow main to grow and take up remaining space */
  overflow: hidden; /* Prevent scrolling within main content */
}

.theme-switch-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0.5rem 0;
}

.theme-checkbox {
  margin: 0 0.5rem;
  transition: transform 0.3s ease;
}

.theme-checkbox:hover {
  transform: scale(1.1);
}

.fader-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
  margin-top: 2rem;
  height: auto; /* Allow fader container height to adjust based on content */
}

.fader-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 1rem;
}

.fader {
  width: 80px;
  height: 250px;
  position: relative;
  margin-bottom: 1rem;
}

.fader-track {
  width: 14px;
  height: 100%;
  background: linear-gradient(to bottom, #6a6a6a, #8a8a8a); /* More grayish */
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: background 0.3s ease;
}

.fader-knob {
  width: 50px;
  height: 25px;
  background: linear-gradient(to bottom, #a0a0a0, #8a8a8a); /* More grayish */
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

.fader-knob:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.content-wrapper {
  height: calc(100vh - 120px);
  overflow: hidden;
}

label {
  margin-bottom: 0.5rem;
}

input[type="number"] {
  width: 80px;
  padding: 0.5rem;
  font-size: 1.1rem;
  font-family: "Orbitron", sans-serif;
  background-color: var(--input-bg-dark);
  color: var(--text-color-dark);
  border: 1px solid var(--input-border-dark);
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
}

input[type="number"]:focus {
  outline: none;
  box-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

body.light-mode .fader-track {
  background: linear-gradient(to bottom, #c0c0c0, #a0a0a0); /* More visible */
}

body.light-mode .fader-knob {
  background: linear-gradient(to bottom, #d0d0d0, #b0b0b0); /* More visible */
}

body.light-mode input[type="number"] {
  background-color: var(--input-bg-light);
  color: var(--text-color-light);
  border: 1px solid var(--input-border-light);
}

body.light-mode input[type="number"]:focus {
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}

.button-container {
  display: flex;
  justify-content: center;
  margin-top: 4rem; /* Increase margin to move button slightly lower */
  flex-shrink: 0; /* Prevent button container from shrinking */
}

#send-config {
  padding: 1rem 2rem;
  font-family: "Orbitron", sans-serif;
  font-size: 1.4rem;
  background-color: #27ae60; /* Contrasting green */
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  width: 80%;
  max-width: 400px;
}

#send-config:hover {
  background-color: #229954; /* Darker green */
  transform: scale(1.05);
}

#send-config:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.5); /* Green shadow */
}

body.light-mode #send-config {
  background-color: #3498db;
  color: white;
}

body.light-mode #send-config:hover {
  background-color: #2980b9;
}

body.light-mode #send-config:focus {
  box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.5);
}

@media screen and (max-width: 600px) {
  h1 {
    font-size: 1.8rem;
  }

  main {
    padding: 1rem;
  }

  .button-container {
    margin-top: 1rem;
  }

  #send-config {
    padding: 0.8rem 1.5rem;
    font-size: 1.2rem;
    width: 90%;
    max-width: 300px;
  }

  .fader-container {
    flex-direction: row;
    justify-content: space-between;
    padding: 0 10px;
    height: 280px;
    margin-top: 2rem;
  }

  .fader-group {
    margin: 0.5rem 0;
  }

  .fader {
    width: 60px;
    height: 200px;
  }

  .fader-knob {
    width: 40px;
    height: 20px;
  }

  input[type="number"] {
    width: 40px;
    font-size: 0.8rem;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

body,
header,
.fader-track,
.fader-knob,
input[type="number"] {
  animation: fadeIn 0.5s ease-out;
}

.fader-group {
  animation: slideIn 0.5s ease-out;
}