/* General reset and font */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #181c24;
  color: #e2eafc;
}

header {
  width: 100%;
  background-color: #151820cc;
  padding: 1.4rem 0 0.8rem 0;
  text-align: center;
  border-bottom: 1px solid #262b38;
  box-shadow: 0 2px 6px rgba(20, 30, 50, 0.12);
}

header h1 {
  font-size: 2.1rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

header p {
  font-size: 1.1rem;
  color: #b2bbd3;
  margin: 0 auto 12px;
}

/* UI controls container styling */
#ui-controls {
  position: absolute;
  top: 110px;
  left: 24px;
  z-index: 10;
  background-color: #181c24d0;
  border-radius: 12px;
  box-shadow: 0 2px 12px #191d26a0;
  padding: 18px 26px 16px 18px;
  pointer-events: auto;
  max-width: 240px;
  user-select: none;
}

#ui-controls p {
  margin: 0 0 8px 0;
  font-size: 1rem;
  font-weight: 500;
  color: #a5b0cc;
}

/* Style sliders */
input[type="range"] {
  width: 100%;
  margin-bottom: 20px;
  cursor: pointer;
  -webkit-appearance: none;
  background: transparent;
}

input[type="range"]:focus {
  outline: none;
}

/* Webkit slider track */
input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
  background: #4a90e2;
  border-radius: 4px;
}

/* Webkit slider thumb */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  border: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: #84d9f0;
  margin-top: -6px;
  cursor: pointer;
  box-shadow: 0 0 4px rgba(132, 217, 240, 0.8);
  transition: background 0.3s ease;
}

input[type="range"]:hover::-webkit-slider-thumb {
  background: #5ab9db;
}

/* Firefox styles */
input[type="range"]::-moz-range-track {
  height: 8px;
  background: #4a90e2;
  border-radius: 4px;
}

input[type="range"]::-moz-range-thumb {
  border: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: #84d9f0;
  cursor: pointer;
  box-shadow: 0 0 4px rgba(132, 217, 240, 0.8);
  transition: background 0.3s ease;
}

input[type="range"]:hover::-moz-range-thumb {
  background: #5ab9db;
}

/* Main canvas fills viewport */
main {
  width: 100vw;
  height: 100vh;
  margin: 0;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

/* p5 canvas fills main area */
canvas {
  display: block !important;
  position: absolute !important;
  top: 0;
  left: 0;
  width: 100vw !important;
  height: 100vh !important;
  outline: none;
  user-select: none;
  z-index: 1;
}

/* Footer styling */
footer {
  width: 100%;
  text-align: center;
  padding: 12px 0;
  background-color: #151820cc;
  color: #b2bbd3;
  font-size: 0.94rem;
  position: fixed;
  left: 0;
  bottom: 0;
  letter-spacing: 0.03em;
  box-shadow: 0 -2px 8px #181c2455;
  z-index: 99;
  user-select: none;
}