body {
  background: linear-gradient(-45deg, #0d1117, #161b22, #21262d, #30363d);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  position: absolute;
  left: 0;
  top: 0;
  padding: 0;
  margin: 0;
  width: 80%;
  left: 10%;
  color: #e6edf3;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Add floating particles animation */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.1), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.05), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.08), transparent),
    radial-gradient(1px 1px at 130px 80px, rgba(255, 255, 255, 0.03), transparent),
    radial-gradient(2px 2px at 160px 30px, rgba(255, 255, 255, 0.06), transparent);
  background-repeat: repeat;
  background-size: 200px 100px;
  animation: particleFloat 20s linear infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes particleFloat {
  0% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-100px);
  }
}

#ff {
  position: relative;
  margin-top: 2%;
  background: rgba(13, 17, 23, 0.8);
  border-radius: 12px;
  padding: 20px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(48, 54, 61, 0.5);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

#ff .progress {
  margin: 0;
  background-color: rgba(48, 54, 61, 0.6);
  border-radius: 8px;
  overflow: hidden;
}

#ff .progress .determinate {
  background: linear-gradient(90deg, #7c3aed, #a855f7, #c084fc);
  background-size: 200% 100%;
  animation: progressGlow 2s ease-in-out infinite;
}

@keyframes progressGlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

#intro {
  display: block;
  margin-top: 1px;
  text-align: center;
  position: relative;
  background: rgba(13, 17, 23, 0.9);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

#intro h4 {
  color: #58a6ff;
  font-weight: 300;
  text-shadow: 0 0 10px rgba(88, 166, 255, 0.3);
}

#glslViewport {
  display: inline-block;
  /* Dark checkerboard pattern */
  background-color: #21262d;
  background-image: 
    linear-gradient(45deg, #30363d 25%, transparent 25%, transparent 75%, #30363d 75%, #30363d), 
    linear-gradient(45deg, #30363d 25%, transparent 25%, transparent 75%, #30363d 75%, #30363d);
  background-size: 10px 10px;
  background-position: 0 0, 5px 5px;
  border-radius: 8px;
  padding: 10px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

#settings {
  display: inline-block;
  vertical-align: top;
  margin-top: -30px;
  margin-left: 5%;
  width: 39%;
  background: rgba(13, 17, 23, 0.8);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

#settings h4 {
  text-align: center;
  color: #58a6ff;
  font-weight: 300;
  margin-bottom: 20px;
}

#settings .range-field {
  margin: 15px 0;
}

#settings .range-field:last-of-type {
  margin-bottom: 25px;
}

#settings .range-field label {
  color: #7d8590;
  font-size: 0.9em;
}

#settings input[type="range"] {
  background: rgba(48, 54, 61, 0.6);
  border-radius: 4px;
}

#settings input[type="range"]::-webkit-slider-thumb {
  background: #58a6ff;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(88, 166, 255, 0.4);
}

#settings input[type="range"]::-moz-range-thumb {
  background: #58a6ff;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(88, 166, 255, 0.4);
  border: none;
}

#settings select {
  background-color: rgba(48, 54, 61, 0.8);
  color: #e6edf3;
  border: 1px solid rgba(48, 54, 61, 0.5);
  border-radius: 4px;
}

#settings .select-wrapper input.select-dropdown {
  background-color: rgba(48, 54, 61, 0.8);
  color: #e6edf3;
  border-bottom: 1px solid rgba(88, 166, 255, 0.3);
}

#settings .dropdown-content {
  background-color: #21262d;
  border: 1px solid rgba(48, 54, 61, 0.5);
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

#settings .dropdown-content li > a,
#settings .dropdown-content li > span {
  color: #e6edf3;
}

#settings .dropdown-content li:hover {
  background-color: rgba(48, 54, 61, 0.8);
}

#settings .dropdown-content li.selected {
  background-color: rgba(88, 166, 255, 0.2);
}

#settings #checkboxes div {
  display: inline-block;
  margin-right: 15px;
  margin-bottom: 10px;
}

#settings #checkboxes div label {
  padding-left: 30px;
  color: #e6edf3;
  font-size: 0.9em;
  position: relative;
}

#settings #checkboxes div label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  background: rgba(48, 54, 61, 0.8);
  border: 2px solid rgba(88, 166, 255, 0.3);
  border-radius: 3px;
  transition: all 0.3s ease;
}

#settings #checkboxes div input[type="checkbox"]:checked + label::before {
  background: #58a6ff;
  border-color: #58a6ff;
  box-shadow: 0 0 8px rgba(88, 166, 255, 0.4);
}

#settings #checkboxes div input[type="checkbox"]:checked + label::after {
  content: '✓';
  position: absolute;
  left: 4px;
  top: 0;
  color: white;
  font-size: 12px;
  font-weight: bold;
}

#settings #checkboxes div input[type="checkbox"] {
  opacity: 0;
  position: absolute;
}

/* Mutual exclusion styling for CUBEMAP and PROCEDURAL SKY */
#settings #checkboxes div input[type="checkbox"]:disabled + label {
  opacity: 0.5;
  color: #7d8590;
  cursor: not-allowed;
}

#settings #checkboxes div input[type="checkbox"]:disabled + label::before {
  background: rgba(48, 54, 61, 0.3);
  border-color: rgba(88, 166, 255, 0.2);
}

/* Visual indicator for mutually exclusive options */
.mutually-exclusive-group {
  border-left: 3px solid rgba(88, 166, 255, 0.3);
  padding-left: 10px;
  margin: 10px 0;
}

#settings h4 {
  text-align: center;
}

#settings .range-field {
  margin: 0 0 0 0;
}

#settings .btn {
  display: inline-block;
  margin: 8px 4px;
  width: calc(48% - 8px);
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none;
  border-radius: 8px;
  padding: 12px 16px;
  color: white !important;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
  vertical-align: top;
}

#settings .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: white !important;
}

#settings .btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

#settings #renderBtn {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

#settings #renderBtn:hover {
  background: linear-gradient(135deg, #7c3aed, #a855f7);
}

#settings #compileBtn {
  background: linear-gradient(135deg, #6b7280, #9ca3af);
  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

#settings #compileBtn:hover {
  background: linear-gradient(135deg, #4b5563, #6b7280);
}

#settings #liveBtn {
  background: linear-gradient(135deg, #6b7280, #9ca3af);
  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

#settings #liveBtn:hover {
  background: linear-gradient(135deg, #4b5563, #6b7280);
}

#settings #infoBtn {
  background: linear-gradient(135deg, #059669, #10b981);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
  width: calc(100% - 8px);
  margin: 8px 4px;
}

#settings #infoBtn:hover {
  background: linear-gradient(135deg, #047857, #059669);
  box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
}

/* Button container to better organize the layout */
#settings .button-row {
  display: flex;
  gap: 8px;
  margin: 8px 0;
}

#settings .button-row .btn {
  flex: 1;
  margin: 0;
}

#modal1 .modal-content,
#modal1 .modal-footer {
  background-color: #21262d;
  color: #e6edf3;
  border-radius: 8px;
}

#modal1 .modal-content {
  border-bottom: 1px solid rgba(48, 54, 61, 0.5);
}

#modal1 .modal-footer .btn-flat {
  color: #58a6ff;
}

#modal1 .modal-footer .btn-flat:hover {
  background-color: rgba(88, 166, 255, 0.1);
}

#scene_wrapper {
  display: inline-block;
  width: 50%;
  background: rgba(13, 17, 23, 0.8);
  border-radius: 12px;
  padding: 15px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  margin-top: 20px;
}

#scene {
  display: inline-block;
  background-color: #0d1117;
  color: #e6edf3;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  resize: none;
  overflow: hidden;
  margin-top: 10px;
  border-radius: 8px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  padding: 10px;
  width: 100%;
  box-sizing: border-box;
  font-size: 13px;
  line-height: 1.4;
}

#scene:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: 0 0 8px rgba(88, 166, 255, 0.3);
}

#sdf_meshes {
  display: inline-block;
  vertical-align: top;
  margin-left: 2%;
  width: 47%;
  background: rgba(13, 17, 23, 0.8);
  border-radius: 12px;
  padding: 15px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  margin-top: 20px;
}

/* Additional dark theme improvements */
.input-field label {
  color: #7d8590 !important;
}

.input-field label.active {
  color: #58a6ff !important;
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(48, 54, 61, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(88, 166, 255, 0.6);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(88, 166, 255, 0.8);
}

/* Materialize framework overrides */
.waves-effect.waves-light .waves-ripple {
  background-color: rgba(255, 255, 255, 0.45);
}

.btn, .btn-large, .btn-small {
  text-decoration: none;
  color: #fff !important;
  background-color: transparent;
  text-align: center;
  letter-spacing: .5px;
  transition: background-color .2s ease-out;
  cursor: pointer;
  border: none;
  border-radius: 2px;
  display: inline-block;
  height: 36px;
  line-height: 36px;
  padding: 0 16px;
  text-transform: uppercase;
  vertical-align: middle;
  -webkit-tap-highlight-color: transparent;
}

/* Override any conflicting Materialize styles */
#settings .btn {
  height: auto !important;
  line-height: 1.2 !important;
  padding: 12px 16px !important;
}

/* Fix button text color specifically */
#settings .btn,
#settings .btn:visited,
#settings .btn:focus {
  color: white !important;
}

/* Ensure button container doesn't interfere */
#settings .button-row {
  width: 100%;
  box-sizing: border-box;
}