styles.css

@import "tailwindcss";

/* Card section container configuration for Container Queries */
section {
  container-type: inline-size;
}

/* Custom styles for better-looking sliders */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background-color: #D1D5DB;
  /* bg-gray-300 */
  border-radius: 9999px;
  /* rounded-full */
  outline: none;
  opacity: 0.7;
  transition: opacity .2s;
}

input[type="range"]:hover {
  opacity: 1;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background-color: #2563EB;
  /* bg-blue-600 */
  border-radius: 9999px;
  /* rounded-full */
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background-color: #2563EB;
  /* bg-blue-600 */
  border-radius: 9999px;
  /* rounded-full */
  cursor: pointer;
}

/* Custom style for recording button */
.recording {
  background-color: #DC2626 !important;
  /* bg-red-600 */
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.recording:hover {
  background-color: #B91C1C !important;
  /* bg-red-700 */
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .5;
  }
}

/* Style for number input */
input[type="number"] {
  width: 100%;
  padding: 0.5rem;
  background-color: #1F2937;
  /* bg-gray-800 */
  border: 1px solid #4B5563;
  /* border-gray-600 */
  border-radius: 0.375rem;
  /* rounded-md */
  color: #F3F4F6;
  /* text-gray-100 */
}

/* Style for AI button when loading */
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Style for visualizer container */
#visualizer-container {
  width: 100%;
  height: 350px;
  background-color: #1F2937;
  display: flex;
  overflow: hidden;
}

@container (max-width: 600px) {
  #visualizer-container {
    height: 200px;
  }
}

#visualizer-yaxis {
  width: 50px;
  height: 100%;
  flex-shrink: 0;
  background-color: #1F2937;
  border-right: 1px solid #4B5563;
}

#visualizer-viewport {
  flex-grow: 1;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  background-color: #1F2937;
}

#visualizer-plot {
  display: block;
  height: 100%;
  background-color: #1F2937;
}

#visualizer-controls-footer {
  border-top: none;
}

/* Custom scrollbar styling for visualizer viewport */
#visualizer-viewport::-webkit-scrollbar {
  height: 8px;
}
#visualizer-viewport::-webkit-scrollbar-track {
  background: #111827;
}
#visualizer-viewport::-webkit-scrollbar-thumb {
  background: #4B5563;
  border-radius: 9999px;
}
#visualizer-viewport::-webkit-scrollbar-thumb:hover {
  background: #6B7280;
}

/* Hide file input */
#load-preset-input {
  display: none;
}

/* Style for disabled quantizer controls */
.quantizer-disabled select,
.quantizer-disabled input {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* NEW TOAST CONTAINER STYLE */
#toast-container {
  position: fixed;
  bottom: 1.25rem;
  /* bottom-5 */
  right: 1.25rem;
  /* right-5 */
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  /* gap-3 */
  z-index: 50;
}

/* NEW INDIVIDUAL TOAST STYLE */
.toast-message {
  color: white;
  padding-top: 0.75rem;
  /* py-3 */
  padding-bottom: 0.75rem;
  /* py-3 */
  padding-left: 1.25rem;
  /* px-5 */
  padding-right: 1.25rem;
  /* px-5 */
  border-radius: 0.5rem;
  /* rounded-lg */
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  /* shadow-lg */
  opacity: 0;
  transform: translateX(1.25rem);
  /* translate-x-5 */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast-message.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-message.hide {
  opacity: 0;
  transform: translateX(1.25rem);
}

.toast-success {
  background-color: #22C55E;
  /* bg-green-500 */
}

.toast-info {
  background-color: #3B82F6;
  /* bg-blue-500 */
}

.toast-error {
  background-color: #EF4444;
  /* bg-red-500 */
}

/* NEW WAVEFORM BUTTON STYLES */
.waveform-btn, .pattern-btn, .octave-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  /* gap-1 */
  padding-top: 0.5rem;
  /* py-2 */
  padding-bottom: 0.5rem;
  /* py-2 */
  min-width: 60px;
  /* Ensure buttons don't get too small */
  flex: 1 0 18%;
  /* Allow flex growth and wrap */
  border-radius: 0.375rem;
  /* rounded-md */
  border: 2px solid transparent;
  transition: all 0.2s;
  background-color: #4B5563;
  /* bg-gray-600 */
  color: #D1D5DB;
  /* text-gray-300 */
}

.waveform-btn:hover, .pattern-btn:hover, .octave-btn:hover {
  background-color: #6B7280;
  /* bg-gray-500 */
}

.waveform-btn.selected, .pattern-btn.selected, .octave-btn.selected {
  background-color: #3B82F6;
  /* bg-blue-600 */
  color: white;
  border-color: #60A5FA;
  /* border-blue-400 */
}

.waveform-btn svg, .pattern-btn svg, .octave-btn svg {
  width: 1.5rem;
  /* w-6 */
  height: 1.5rem;
  /* h-6 */
  stroke-width: 2;
}

/* Pattern buttons grid layout (4 columns on desktop/tablet, wrapping on tight spaces based on section width) */
#pattern-buttons {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  width: 100%;
}

@container (max-width: 300px) {
  #pattern-buttons {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@container (max-width: 200px) {
  #pattern-buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Octave buttons: compact single-row layout */
.octave-btn {
  min-width: 40px;
  flex: 0 0 auto;
  padding: 0.375rem 0.625rem;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Note Step Indicator — shows which note is currently playing */
#note-step-indicator {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.25rem;
  margin-top: 0.375rem;
  min-height: 1.5rem;
  align-items: center;
}

.note-step-pip {
  flex: 1 1 0;
  min-width: 0;
  height: 0.375rem;
  border-radius: 9999px;
  background-color: #4B5563;
  /* bg-gray-600 */
  transition: background-color 0.08s, transform 0.08s;
}

.note-step-pip.active {
  background-color: #60A5FA;
  /* blue-400 */
  transform: scaleY(2.5);
  transform-origin: center;
}

/* KEYBOARD VISUAL CONTAINER - Overall Wrapper (renamed from #keyboard-visual) */
#keyboard-main-wrapper {
  display: flex;
  /* Allow wrapping when there is not enough space, stacking higher octave above lower */
  flex-wrap: wrap-reverse;
  gap: 0.5rem;
  /* Space between octaves */
  justify-content: center;
  /* Center the keyboard horizontally */
  align-items: flex-start;
  /* Align octaves at the top */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  height: auto;
  /* Let content define height */
  overflow: visible;
  /* Ensure absolutely positioned black keys are visible */
  margin-top: 1rem;
  /* Add some margin above the keyboard */
}

/* INDIVIDUAL OCTAVE CONTAINER */
.piano-octave {
  display: flex;
  /* Use flex to lay out white keys horizontally within an octave */
  position: relative;
  /* Crucial for absolute positioning of black keys within their octave */
  height: 6rem;
  /* Total height: white keys 4.5rem, black keys 2.5rem on top */
  border-radius: 4px;
  /* box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); */
  /* Subtle shadow for octave separation */
  /* background-color: #333; */
  /* Background to show black keys clearly against */
}

/* KEYBOARD KEY STYLES - General properties for both white and black keys */
.piano-key {
  appearance: none;
  background: none;
  border: none;
  padding: 0;
  padding-bottom: 0.5rem;
  box-sizing: border-box;
  display: flex;
  align-items: flex-end;
  /* Align labels at the bottom */
  justify-content: center;
  border-radius: 0 0 4px 4px;
  font-size: 0.75rem;
  font-weight: bold;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  transition: background-color 0.1s, transform 0.1s;
}

.key-label {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

/* Ensure white key labels have maximum contrast (dark text) at all times, even when disabled */
.key-white .key-label {
  color: #1a1a1a !important;
  -webkit-text-fill-color: #1a1a1a !important;
  font-weight: 800 !important;
  opacity: 1 !important;
}

/* Ensure black key labels have maximum contrast (light text) at all times, even when disabled */
.key-black .key-label {
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  font-weight: 800 !important;
  opacity: 1 !important;
}

.piano-key:disabled {
  opacity: 1 !important;
  cursor: default;
}



.key-white {
  background-color: transparent;
  color: black;
  height: 4.5rem;
  /* White keys are taller */
  width: 40px;
  flex-shrink: 0;
  flex-grow: 0;
  /* Explicit width for white keys */
  border: none;
  z-index: 0;
  margin-left: -1px;
  /* Overlap borders for a continuous look */
  position: relative;
}

.key-bg-svg {
  overflow: visible;
}

.key-bg-path {
  fill: #ffffff;
  stroke: #cccccc;
  stroke-width: 1px;
  vector-effect: non-scaling-stroke;
  transition: fill 0.1s;
}

/* First white key in an octave should not have left margin */
.piano-octave .key-white:first-child {
  margin-left: 0;
}

.key-white.active {
  transform: scale(0.98);
}

.key-white.active .key-bg-path {
  fill: #dddddd;
}

.key-black {
  background-color: black;
  color: white;
  height: 2.5rem;
  /* Black keys are shorter */
  width: 24px;
  flex-shrink: 0;
  flex-grow: 0;
  /* Explicit width for black keys */
  z-index: 10;
  position: absolute;
  /* Crucial for overlapping */
  top: 0;
  /* Align black keys at the top of the octave wrapper */
  /* 'left' property will be set via JS inline styles */
  border: 1px solid #333;
  border-top: none;
  /* No top border for a cleaner look */
  border-radius: 0 0 3px 3px;
  /* Slightly smaller border radius for black keys */
}

.key-black.active {
  background-color: #333;
  transform: scale(0.98);
}

@media (prefers-color-scheme: dark) {
  .key-black {
    background-color: black;
    color: white;
  }

  .key-black.active {
    background-color: #333;
  }
}

/* Responsive breakpoint for keyboard split */
@media (max-width: 768px) {
  /* Adjust breakpoint as needed */
  .piano-octave {
    width: min-content;
    /* Adjust octave width to content on small screens */
  }
}

/* Styles for <details> accordion */
details.card-details > summary {
  list-style: none;
  cursor: pointer;
  padding: 0.5rem;
  background-color: #4B5563;
  /* bg-gray-600 */
  border-radius: 0.5rem;
  transition: background-color 0.2s;
}

details.card-details > summary:hover {
  background-color: #6B7280;
  /* bg-gray-500 */
}

details.card-details > summary::-webkit-details-marker {
  display: none;
}

details.card-details > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Triangle marker */
details.card-details > summary::after {
  content: '►';
  font-size: 0.8em;
  transition: transform 0.2s;
}

details[open].card-details > summary::after {
  transform: rotate(90deg);
}

details.card-details > div {
  padding-top: 1rem;
  /* pt-4 */
}

/* Screen reader only utility class for accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus outlines for all interactive elements to support keyboard navigation */
button:focus-visible,
input:focus-visible,
select:focus-visible,
details > summary:focus-visible {
  outline: 2px solid #38BDF8;
  outline-offset: 2px;
}

/* Specific focus outline style inside the piano key boundary to avoid clipping and overlap */
.key-black:focus-visible {
  outline: 2px solid #38BDF8;
  outline-offset: -2px;
  z-index: 15 !important;
}

.key-white:focus-visible {
  outline: none !important;
  z-index: 5 !important;
}

.key-white:focus-visible .key-bg-path {
  stroke: #38BDF8;
  stroke-width: 2px;
}

/* Class for hidden test state mirror element used in PWA/browser testing */
.test-state-mirror {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}