/**
 * Granular Studio Page Styles
 * Uses centralized design system with page-specific overrides
 *
 * ITCSS ARCHITECTURE (page-level layers):
 * 1. SETTINGS    - Page-specific variables (extends design-system.css)
 * 2. ELEMENTS    - Base HTML element styles
 * 3. OBJECTS     - Layout patterns (shell, strips)
 * 4. COMPONENTS  - UI components (pad, mode-switch, track-pill, etc.)
 * 5. OVERRIDES   - Media queries, state classes, accessibility
 *
 * BEM NAMING:
 * - Blocks: .pad, .mode-switch, .track-pill, .dot-btn
 * - Elements: .pad__waveform, .mode-switch__slider
 * - Modifiers: .pad--settings-open, .dot-btn--rec
 * - States: .is-active, .is-disabled, .is-recording (JS-controlled)
 *
 * SPACING CONVENTIONS:
 * - All spacing uses design system tokens (--space-*, --gap-*, --pad-*, --margin-*)
 * - Mobile-first responsive approach
 */

/* ==========================================================================
   SETTINGS LAYER - Page-Specific Variables
   ========================================================================== */

:root {
  /* Page-specific color overrides */
  --bgDark: var(--color-bg-dark);
  --bgPanel: var(--color-bg-panel);
  --bluePrimary: var(--color-blue-primary);
  --blueSecondary: var(--color-blue-secondary);
  --redPrimary: var(--color-red-primary);
  --redSecondary: var(--color-red-secondary);
  --smokeLavender: var(--color-smoke-lavender);
  --smokePeriwinkle: var(--color-smoke-periwinkle);
  --smokeRose: var(--color-smoke-rose);
  --text: var(--color-text-primary);
  --muted: var(--color-muted-alt);

  /* Page-specific layout variables */
  --topbar-height: 6.25rem; /* 100px */
  --bottom-height: 3.75rem; /* 60px */

  /* Mode-specific accent colors (default: smoke) */
  --accentPrimary: var(--bluePrimary);
  --accentSecondary: var(--blueSecondary);
  --ghostPrimary: var(--redSecondary);
  --ghostSoft: var(--smokeRose);
  --pad-border-color: var(--accentPrimary);
  --pad-border: var(--border-width-base) solid var(--pad-border-color);

  /* Button size system */
  --btn-size-sm: 3.125rem;
  --btn-size-md: 3.125rem;
  --btn-size-lg: 3.5rem;
  --btn-size-xl: 3.125rem;
  --btn-padding-sm: 0;
  --btn-padding-md: var(--pad-xs) var(--pad-sm);
  --btn-padding-lg: var(--pad-xs) var(--pad-md);
  --btn-padding-xl: var(--pad-xs) var(--pad-lg);

  /* Shared onboarding chip theme (hint + tooltip) */
  --onboarding-chip-bg: var(--color-gray-200);
  --onboarding-chip-color: var(--color-gray-750);
  --onboarding-chip-border: 1px solid rgba(0, 0, 0, 0.12);
}

/* Mode: smoke (default) */
:root[data-mode='smoke'] {
  --accentPrimary: var(--bluePrimary);
  --accentSecondary: var(--blueSecondary);
  --ghostPrimary: var(--redSecondary);
  --ghostSoft: var(--smokeRose);
}

/* Mode: shards */
:root[data-mode='shards'] {
  --accentPrimary: var(--redPrimary);
  --accentSecondary: var(--redSecondary);
  --ghostPrimary: var(--blueSecondary);
  --ghostSoft: var(--smokePeriwinkle);
}

/* ==========================================================================
   ELEMENTS LAYER - Base HTML Styles
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bgDark);
  color: var(--text);
  font-family: var(--ui);
  display: flex;
  justify-content: center;
  padding: var(--pad-xs);
}

/* ==========================================================================
   OBJECTS LAYER - Layout Patterns
   ========================================================================== */

.groove-shell {
  width: min(80rem, 98vw); /* 1280px */
  max-height: calc(100vh - var(--space-lg));
  min-height: 38.75rem; /* 620px */
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  background: var(--bgPanel);
  border-radius: 0;
  padding: var(--pad-md) var(--pad-md) var(--pad-sm);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* ==========================================================================
   COMPONENTS LAYER - UI Components
   ========================================================================== */

/* --------------------------------------------
   Topbar Component
   -------------------------------------------- */

.topbar {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: var(--space-3xs) 0 var(--space-2xs);
}

.controls-bar {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  flex-wrap: nowrap;
  justify-content: space-between;
}

.title {
  font-family: var(--title);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-lg);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ============================================
   TRACK LIST
   ============================================ */

.track-container {
  flex: 1 1 auto;
  min-width: 0;
  min-height: calc(
    var(--space-xl) + var(--space-xs) + var(--pad-xs) * 2 + var(--border-width-base) * 2
  );
  padding: var(--pad-xs);
  background: var(--color-bg-dark);
  border: var(--border-width-base) solid var(--accentPrimary);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}

.track-container::-webkit-scrollbar {
  height: var(--space-2xs);
}

.track-container::-webkit-scrollbar-thumb {
  background: var(--color-blue-secondary);
  border-radius: var(--radius-full);
}

.track-strip {
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
  width: max-content;
  padding-right: var(--pad-xs);
}

.track-pill {
  flex-shrink: 0;
  height: calc(var(--space-xl) + var(--space-xs));
  padding: 0 var(--pad-sm);
  display: flex;
  align-items: center;
  background: var(--color-bg-dark);
  color: var(--accentPrimary);
  border: var(--border-width-base) solid var(--accentPrimary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  scroll-snap-align: start;
  transition:
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
}

.track-pill:hover:not(.is-active) {
  color: color-mix(in srgb, var(--accentPrimary) 88%, black);
  border-color: color-mix(in srgb, var(--accentPrimary) 88%, black);
}

.track-pill.is-active {
  background: var(--accentPrimary);
  color: var(--color-bg-dark);
}

.track-container.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ============================================
   MODE TOGGLE
   ============================================ */

.mode-switch {
  display: flex;
  align-items: center;
  gap: var(--space-3xs);
  min-height: calc(
    var(--space-xl) + var(--space-xs) + var(--pad-xs) * 2 + var(--border-width-base) * 2
  );
  padding: var(--pad-xs);
  background: var(--color-bg-dark);
  border: var(--border-width-base) solid var(--accentPrimary);
  border-radius: var(--radius-lg);
  position: relative;
  flex-shrink: 0;
}

.mode-switch__option {
  position: relative;
  z-index: 1;
  width: var(--space-xl);
  height: calc(var(--space-xl) + var(--space-xs));
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-base);
}

.mode-switch__option[aria-checked='false'] {
  opacity: 0.4;
}

.mode-switch__option[aria-checked='false']:hover {
  opacity: 0.6;
}

.mode-switch__option[aria-checked='true'] {
  opacity: 1;
}

.mode-switch.is-disabled .mode-switch__option {
  cursor: not-allowed;
}

.mode-switch.is-disabled {
  opacity: 0.4;
}

.mode-switch__slider {
  position: absolute;
  top: var(--pad-xs);
  left: var(--pad-xs);
  width: var(--space-xl);
  height: calc(var(--space-xl) + var(--space-xs));
  background: var(--color-blue-primary);
  border: var(--border-width-base) solid var(--accentPrimary);
  border-radius: var(--radius-sm);
  transition:
    transform var(--transition-base),
    background var(--transition-base);
  z-index: 0;
}

.mode-switch[data-mode='shards'] .mode-switch__slider {
  transform: translateX(calc(var(--space-xl) + var(--space-3xs)));
  background: var(--color-red-primary);
}

/* Icons */
.mode-switch__icon {
  width: 0.875rem;
  height: 0.875rem;
  display: block;
  position: relative;
}

/* Smoke icon - circle */
.mode-switch__icon--smoke::before {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: currentColor;
}

/* Shards icon - triangle */
.mode-switch__icon--shards::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -45%);
  width: 0;
  height: 0;
  border-left: 0.375rem solid transparent;
  border-right: 0.375rem solid transparent;
  border-bottom: 0.625rem solid currentColor;
}

/* Icon colors - dark on active (over colored slider), light on inactive */
.mode-switch__option[aria-checked='true'] .mode-switch__icon {
  color: var(--color-black);
}

.mode-switch__option[aria-checked='false'] .mode-switch__icon {
  color: var(--color-white);
}

/* ============================================
   SURFACE (CANVAS AREA)
   ============================================ */

.surface {
  position: relative;
  flex: 0 0 auto;
  height: clamp(16.25rem, 48vh, 25rem); /* 260px, 48vh, 400px */
  background-color: var(--color-bg-panel);
  background-image:
    linear-gradient(0deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Crect width='140' height='140' fill='none'/%3E%3Ccircle cx='4' cy='9' r='1.3' fill='rgba(255,255,255,0.08)'/%3E%3Ccircle cx='60' cy='60' r='1.3' fill='rgba(255,255,255,0.07)'/%3E%3Ccircle cx='100' cy='24' r='1.3' fill='rgba(255,255,255,0.06)'/%3E%3Ccircle cx='16' cy='120' r='1.3' fill='rgba(255,255,255,0.075)'/%3E%3Ccircle cx='120' cy='100' r='1.3' fill='rgba(255,255,255,0.085)'/%3E%3Ccircle cx='80' cy='130' r='1.3' fill='rgba(255,255,255,0.07)'/%3E%3C/svg%3E");
  background-size:
    100% 100%,
    100% 100%,
    11.25rem 11.25rem;
  background-blend-mode: screen;
  overflow: hidden;
  touch-action: none;
}

#playCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: transparent;
  touch-action: none;
}

.surface::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: transparent;
  mix-blend-mode: screen;
}

.surface::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320' viewBox='0 0 320 320'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='320' height='320' filter='url(%23n)' opacity='0.18'/%3E%3C/svg%3E");
  mix-blend-mode: screen;
  opacity: 0.32;
}

:root[data-mode='shards'] .surface {
  background-image:
    linear-gradient(0deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Crect width='140' height='140' fill='none'/%3E%3Ccircle cx='4' cy='9' r='1.3' fill='rgba(255,255,255,0.08)'/%3E%3Ccircle cx='60' cy='60' r='1.3' fill='rgba(255,255,255,0.07)'/%3E%3Ccircle cx='100' cy='24' r='1.3' fill='rgba(255,255,255,0.06)'/%3E%3Ccircle cx='16' cy='120' r='1.3' fill='rgba(255,255,255,0.075)'/%3E%3Ccircle cx='120' cy='100' r='1.3' fill='rgba(255,255,255,0.085)'/%3E%3Ccircle cx='80' cy='130' r='1.3' fill='rgba(255,255,255,0.07)'/%3E%3C/svg%3E");
}

.surface__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.surface__bar {
  position: absolute;
  top: var(--space-xs);
  left: var(--space-sm);
  right: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-sm);
}

/* ============================================
   HINT - Loading/Ready state indicator
   States: default (tap), is-loading, ready, hidden
   ============================================ */

.hint {
  --hint-height: 36px;

  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
}

/* Container - grid overlap so widest child sizes the container */
.hint__container {
  position: relative;
  display: grid;
  place-items: center;
  width: auto;
  padding: 0.5rem var(--space-sm);
  background: var(--color-bg-dark);
  border-radius: var(--radius-lg);
  transition: opacity var(--duration-slow) var(--ease-default);
}

/* Text styles */
.hint__loading,
.hint__ready {
  position: relative;
  z-index: 1;
  color: var(--muted);
  letter-spacing: 0.22em;
  text-transform: lowercase;
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  font-family: var(--mono);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-default);
  white-space: nowrap;
}

.hint__ready {
  grid-area: 1 / 1;
}

/* Default state: show loading text, no animations */
.hint__loading {
  grid-area: 1 / 1;
  opacity: 0.5;
}

/* ============================================
   LOADING STATE - Container breathes
   ============================================ */

/* Container breathing animation (shared, with subtle blur) */
.hint.is-loading .hint__container {
  animation: breathe 1.25s ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
    filter: blur(0);
  }
  50% {
    transform: scale(1.03);
    filter: blur(1px);
  }
}

/* ============================================
   READY STATE - Container ripples outward
   ============================================ */

.hint__drag-anim {
  grid-area: 1 / 1;
  overflow: visible;
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-default);
}

/* Container-shaped ripples - inherit container size via inset */
.hint__ripple {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid currentColor;
  opacity: 0;
  animation: none;
  pointer-events: none;
}

/* Activate ripples in ready state */
.hint.ready .hint__drag-anim {
  opacity: 1;
}

.hint.ready .hint__ripple--left {
  animation: ripple-out 6s ease-out infinite;
  animation-delay: 0s;
}

.hint.ready .hint__ripple--center {
  animation: ripple-out 6s ease-out infinite;
  animation-delay: 2s;
}

.hint.ready .hint__ripple--right {
  animation: ripple-out 6s ease-out infinite;
  animation-delay: 4s;
}

/* Ripple animation: starts sharp, blurs as it expands */
@keyframes ripple-out {
  0% {
    opacity: 0.5;
    transform: scale(1);
    filter: blur(0);
  }
  100% {
    opacity: 0;
    transform: scale(2);
    filter: blur(3px);
  }
}

/* Smoke mode: blue ripples */
:root[data-mode='smoke'] .hint__ripple {
  color: color-mix(in srgb, var(--color-blue-primary) 85%, transparent);
}

/* Shards mode: red ripples */
:root[data-mode='shards'] .hint__ripple {
  color: var(--color-red-primary);
}

/* ============================================
   READY STATE - Text crossfade
   ============================================ */

.hint.ready .hint__loading {
  opacity: 0;
}

.hint.ready .hint__ready {
  opacity: 0.5;
}

/* ============================================
   HIDDEN STATE - Fade everything out
   ============================================ */

.hint.hidden .hint__container {
  opacity: 0;
}

.hint.hidden .hint__drag-anim {
  opacity: 0;
}

.hint.hidden .hint__tutorial {
  opacity: 0;
  pointer-events: none;
}

/* ============================================
   HINT TUTORIAL BUTTON
   ============================================ */

.hint__tutorial {
  display: block;
  margin-top: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: none;
  border: none;
  color: var(--color-blue-primary);
  font-family: var(--mono);
  font-size: var(--text-xs);
  text-transform: lowercase;
  letter-spacing: 0.1em;
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 0.7;
  cursor: pointer;
  pointer-events: auto;
  transition: opacity var(--duration-slow) var(--ease-default);
}

:root[data-mode='shards'] .hint__tutorial {
  color: var(--color-red-primary);
}

.hint__tutorial:hover {
  opacity: 1;
}

/* ============================================
   PADS SECTION - TE-Inspired Design
   ============================================ */

.pads {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  min-height: 7rem;
  margin-bottom: var(--margin-xs);
}

.pads__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  gap: var(--gap-md);
  align-items: start;
}

.loop-rack {
  --pad-width: 9rem;

  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: var(--gap-sm);
  align-items: start;
  width: 100%;
  padding: var(--space-2xs) var(--space-2xs) var(--space-xs);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.loop-rack .pad {
  flex: 0 0 var(--pad-width);
  width: var(--pad-width);
  scroll-snap-align: start;
}

/* Expanded pad - width driven by content (sliders + toggles) */
.loop-rack .pad--settings-open {
  flex: 0 0 auto;
  width: auto;
}

/* Scrollbar styling */
.loop-rack::-webkit-scrollbar {
  height: var(--space-2xs);
}

.loop-rack::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--color-white) 20%, transparent);
  border-radius: var(--radius-full);
}

.loop-rack::-webkit-scrollbar-track {
  background: transparent;
}

.loop-rack.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.loop-rack.is-disabled .pad__status {
  visibility: hidden;
}

/* ============================================
   PAD - TE-Inspired Playful Design
   Two-container layout: pad__main + pad__settings
   ============================================ */

.pad {
  --pad-accent: var(--bluePrimary);
  --pad-accent-dim: color-mix(in srgb, var(--color-blue-primary) 25%, transparent);
  --pad-muted: var(--color-gray-400);
  --progress: 0;

  /* Elevation system (z-index layers) */
  --z-number: 0; /* Background: subtle number (lowest) */
  --z-waveform: 2; /* Content: waveform canvas */
  --z-status: 3; /* Overlay: status pill, play button */
  --z-controls: 10; /* Controls: settings/clear buttons */

  display: flex;
  flex-direction: row;
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--color-gray-800);
  border: 3px solid var(--color-gray-500);
  cursor: pointer;
  overflow: visible;
  transition:
    transform 0.15s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    width 0.2s ease,
    flex-basis 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* Main content area - fixed size, doesn't change when settings open */
.pad__main {
  position: relative;
  flex: 0 0 calc(var(--pad-width) - 6px);
  width: calc(var(--pad-width) - 6px);
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

/* Settings panel - hidden by default, width driven by content */
.pad__settings {
  flex: 0 0 0;
  width: 0;
  padding: 0;
  background: var(--color-white);
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 0.5rem;
  overflow: hidden;
}

/* Sliders container - holds all vertical sliders */
.pad__sliders {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: stretch;
  gap: 0.4rem;
  flex: 1 1 auto;
}

/* Toggles container - holds all toggle buttons */
.pad__toggles {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  gap: 0.4rem;
  padding: 0.15rem 0;
  margin-left: 0.5rem;
}

.pad:focus-visible {
  outline: 2px solid var(--pad-accent);
  outline-offset: 2px;
}

/* Pad states via data-state attribute */
.pad[data-state='empty'] {
  border-color: var(--pad-muted);
}

.pad[data-state='ready'] {
  border-color: transparent;
  background: var(--color-white);
}

.pad[data-state='recording'] {
  border-color: var(--pad-accent);
  box-shadow:
    0 0 20px var(--pad-accent-dim),
    inset 0 0 30px var(--pad-accent-dim);
  animation: padRecordPulse 1s ease-in-out infinite;
}

.pad[data-state='playing'] {
  border-color: transparent;
  background: var(--color-white);
}

.pad[data-state='countdown'] {
  border-color: var(--pad-accent);
  animation: padCountdown 0.3s ease-out;
}

/* Disabled state */
.pad--disabled {
  opacity: 0.3;
  pointer-events: none;
  filter: grayscale(50%);
}

/* Settings open state - show settings panel */
.pad--settings-open {
  border-color: var(--pad-accent);
  /* Let the pad grow to fit its content */
  flex: 0 0 auto;
  width: auto;
}

.pad--settings-open .pad__settings {
  /* Settings panel width driven by content */
  flex: 0 0 auto;
  width: auto;
  padding: 0.5rem 0.6rem 0.5rem 0.5rem;
  touch-action: pan-x; /* Allow horizontal scroll passthrough to .loop-rack */
}

/* Waveform canvas */
.pad__waveform {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-waveform);
  opacity: 0;
}

.pad[data-state='ready'] .pad__waveform,
.pad[data-state='playing'] .pad__waveform {
  opacity: 1;
}

/* Content overlay - status at bottom */
.pad__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 0.5rem;
  z-index: var(--z-status);
  pointer-events: none;
}

/* Pad number - centered in pad */
.pad__number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Space Mono', var(--mono);
  font-size: clamp(3rem, 10vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--pad-muted);
  pointer-events: none;
  z-index: var(--z-number);
  transition:
    color 0.2s ease,
    opacity 0.2s ease;
}

/* Number stays muted/subtle in all states - lighter on white background */
.pad[data-state='ready'] .pad__number,
.pad[data-state='playing'] .pad__number {
  color: color-mix(in srgb, var(--color-black) 12%, transparent);
}

/* Status text - pill badge below number */
.pad__status {
  font-family: 'Space Mono', var(--mono);
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  /* Subtle like X button - gray bg, muted white text */
  color: color-mix(in srgb, var(--color-white) 70%, transparent);
  background: var(--color-gray-400);
  transition:
    color 0.2s ease,
    font-size 0.2s ease,
    background 0.2s ease,
    opacity 0.2s ease;
  padding: 0.3em 0.6em;
  border-radius: var(--radius-sm);
}

/* Play button styling for ready state - square with accent bg */
.pad[data-state='ready'] .pad__status {
  font-size: 1rem;
  color: var(--color-white);
  background: var(--pad-accent);
  padding: 0.5em;
  letter-spacing: 0;
  border-radius: 4px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
}

/* Countdown */
.pad[data-state='countdown'] .pad__status {
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 700;
  color: var(--pad-accent);
  letter-spacing: 0;
  background: transparent;
  padding: 0;
}

/* Recording - pulsing pill badge */
.pad[data-state='recording'] .pad__status {
  color: var(--color-white);
  background: var(--pad-accent);
  animation: statusPulse 1.25s ease-in-out infinite;
}

@keyframes statusPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.85;
  }
}

.pad[data-state='playing'] .pad__status {
  opacity: 0;
}

/* Settings button - 24px circle with icon */
.pad__settings-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: var(--color-black);
  color: color-mix(in srgb, var(--color-white) 70%, transparent);
  border-radius: 50%;
  cursor: pointer;
  z-index: var(--z-controls);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.15s ease,
    background 0.15s ease,
    color 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pad__settings-btn .material-symbols-outlined {
  font-size: 16px;
}

/* Show settings button only when pad has content */
.pad[data-state='ready'] .pad__settings-btn,
.pad[data-state='playing'] .pad__settings-btn {
  opacity: 1;
  pointer-events: auto;
}

/* Settings button hover - only when closed */
.pad:not(.pad--settings-open) .pad__settings-btn:hover {
  background: var(--color-gray-400);
  color: var(--color-white);
}

/* Settings button when settings panel is open - use accent color */
.pad--settings-open .pad__settings-btn {
  background: var(--pad-accent);
  color: var(--color-white);
}

.pad--settings-open .pad__settings-btn:hover {
  filter: brightness(1.1);
}

.pad__settings-btn:active {
  filter: brightness(0.9);
}

/* Clear/Delete button - 24px circle */
.pad__clear-btn {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: var(--color-gray-400);
  color: color-mix(in srgb, var(--color-white) 70%, transparent);
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
  text-align: center;
  border-radius: 50%;
  cursor: pointer;
  z-index: var(--z-controls);
  opacity: 1;
  pointer-events: auto;
  transition:
    opacity 0.15s ease,
    background 0.15s ease,
    color 0.15s ease;
}

/* Clear button when pad has content - black */
.pad[data-state='ready'] .pad__clear-btn,
.pad[data-state='playing'] .pad__clear-btn {
  background: var(--color-black);
  color: var(--color-white);
}

/* Hide delete button if it's the only pad (empty state) */
.loop-rack .pad:only-of-type[data-state='empty'] .pad__clear-btn {
  opacity: 0.3;
  pointer-events: none;
}

/* Only apply hover on devices that support it (not touch) */
@media (hover: hover) {
  .pad__clear-btn:hover {
    background: var(--color-white);
    color: var(--color-black);
  }
}

.pad__clear-btn:active {
  background: var(--color-white);
  color: var(--color-black);
}

/* Vertical slider row - for settings panel */
.pad__slider-row {
  --slider-col-width: 1.6rem;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  flex: 0 0 var(--slider-col-width);
  width: var(--slider-col-width);
  min-width: var(--slider-col-width);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.pad--settings-open .pad__slider-row {
  opacity: 1;
  transition-delay: 0.1s;
}

.pad__slider-label {
  font-family: 'Space Mono', var(--mono);
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: color-mix(in srgb, var(--color-black) 55%, transparent);
  text-align: center;
}

/* Vertical slider - styled for white background */
.pad__slider {
  writing-mode: vertical-lr;
  direction: rtl;
  flex: 1;
  width: 8px;
  height: auto;
  min-height: 3rem;
  -webkit-appearance: none;
  appearance: none;
  background: color-mix(in srgb, var(--color-black) 12%, transparent);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
  touch-action: pan-x; /* Allow horizontal scroll, slider uses vertical drag for value */
}

.pad__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border: 2px solid transparent;
  border-radius: 6px;
  background: var(--pad-accent, var(--color-blue-primary));
  background-clip: content-box;
  box-sizing: border-box;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.pad__slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.pad__slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border: 2px solid transparent;
  border-radius: 6px;
  background: var(--pad-accent, var(--color-blue-primary));
  background-clip: content-box;
  box-sizing: border-box;
  cursor: pointer;
}

/* Toggle buttons - circular button with label below */
.pad__toggle {
  --toggle-size: 1.25rem;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.pad__toggle:hover .pad__toggle-circle {
  transform: scale(1.1);
}

.pad__toggle:active .pad__toggle-circle {
  transform: scale(0.95);
}

/* Toggle circle indicator */
.pad__toggle-circle {
  width: var(--toggle-size);
  height: var(--toggle-size);
  border: 2px solid var(--pad-accent, var(--color-blue-primary));
  border-radius: 50%;
  background: transparent;
  transition:
    background 0.15s ease,
    transform 0.1s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Toggle label - visible below the circle */
.pad__toggle-label {
  font-family: 'Space Mono', var(--mono);
  font-size: 0.45rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--color-black) 55%, transparent);
  text-align: center;
  white-space: nowrap;
}

/* Toggle ON state - filled circle with accent color */
.pad__toggle[aria-pressed='true'] .pad__toggle-circle {
  background: var(--pad-accent, var(--color-blue-primary));
}

/* Inner dot indicator for ON state */
.pad__toggle[aria-pressed='true'] .pad__toggle-circle::after {
  content: '';
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--color-white);
}

/* Fade in toggles when settings open */
.pad__toggles {
  opacity: 0;
  transition: opacity 0.15s ease;
}

.pad--settings-open .pad__toggles {
  opacity: 1;
  transition-delay: 0.1s;
}

/* ============================================
   ADD PAD BUTTON
   ============================================ */

.pad--add {
  border: 3px dashed var(--color-gray-400);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 5;
  opacity: 0.5;
  transition:
    opacity 0.2s ease,
    border-color 0.2s ease,
    transform 0.15s ease;
}

.pad--add:hover {
  opacity: 0.8;
  border-color: var(--color-gray-300);
}

.pad--add:active {
  transform: scale(0.97);
}

.pad--add.is-hidden {
  display: none;
}

.pad--add.is-transitioning {
  opacity: 0;
  transform: scale(0.9);
  pointer-events: none;
}

.pad__add-icon {
  font-family: 'Space Mono', var(--mono);
  font-size: 2rem;
  font-weight: 300;
  color: color-mix(in srgb, var(--color-white) 40%, transparent);
  line-height: 1;
}

.pad--add:hover .pad__add-icon {
  color: color-mix(in srgb, var(--color-white) 60%, transparent);
}

/* ============================================
   PAD ANIMATIONS
   ============================================ */

@keyframes padRecordPulse {
  0%,
  100% {
    box-shadow:
      0 0 20px var(--pad-accent-dim),
      inset 0 0 30px var(--pad-accent-dim);
  }
  50% {
    box-shadow:
      0 0 30px var(--pad-accent-dim),
      inset 0 0 40px var(--pad-accent-dim);
  }
}

@keyframes padCountdown {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 var(--pad-accent);
  }
  50% {
    transform: scale(1.03);
    box-shadow: 0 0 0 8px transparent;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 transparent;
  }
}

/* Pulse animation class */
.pad--pulse {
  animation: padCountdown 0.3s ease-out;
}

/* Ripple animation class */
.pad--ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-white) 30%, transparent);
  transform: translate(-50%, -50%);
  animation: padRipple 0.4s ease-out forwards;
  pointer-events: none;
}

@keyframes padRipple {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 200%;
    height: 200%;
    opacity: 0;
  }
}

/* Entering animation */
.pad--entering {
  animation: padEnter 0.3s ease-out forwards;
}

@keyframes padEnter {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Exiting animation */
.pad--exiting {
  pointer-events: none;
  animation: padExit 0.25s ease-out forwards;
}

@keyframes padExit {
  to {
    opacity: 0;
    transform: scale(0.8);
  }
}

/* ============================================
   CONTROL STRIP
   ============================================ */

.control-strip {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  gap: var(--gap-xs);
  height: auto;
  min-height: auto;
  padding: 0;
  align-self: start;
}

.control-cluster {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--gap-sm);
  width: clamp(13.125rem, 26vw, 17.5rem); /* 210px, 26vw, 280px */
  flex: 0 0 auto;
}

.recording-buttons {
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  gap: var(--gap-xs);
  width: 100%;
}

/* ============================================
   DOT BUTTONS
   ============================================ */

.dot-btn {
  min-height: var(--btn-size-md);
  padding: var(--pad-xs) var(--pad-sm);
  border-radius: var(--radius-lg);
  border: 0;
  background: var(--color-gray-850);
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: var(--font-weight-extrabold);
  font-family: var(--mono);
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-xs);
  cursor: pointer;
  width: 100%;
  max-width: 100%;
}

/* Size modifiers (orthogonal to color variants) */

.dot-btn--sm {
  width: var(--btn-size-sm);
  min-width: var(--btn-size-sm);
  max-width: var(--btn-size-sm);
  min-height: var(--btn-size-sm);
  padding: var(--btn-padding-sm);
  justify-content: center;
  flex-shrink: 0;
}

.dot-btn--sm .dot-btn__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.dot-btn--md {
  min-height: var(--btn-size-md);
  padding: var(--btn-padding-md);
}

.dot-btn--lg {
  min-height: var(--btn-size-lg);
  padding: var(--btn-padding-lg);
}

.dot-btn--xl {
  min-height: var(--btn-size-xl);
  padding: var(--btn-padding-xl);
  justify-content: center;
  width: 100%;
  grid-column: 1 / -1;
}

.dot-btn__dot {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background: var(--accentPrimary);
  display: inline-block;
}

.dot-btn--loop {
  background: var(--bluePrimary);
  color: var(--color-black);
  border: 0;
}

.dot-btn--loop[aria-pressed='true'] {
  box-shadow: inset 0 0 0 2px var(--color-black);
}

.dot-btn--rec {
  background: var(--color-white);
  color: var(--redPrimary);
  border: 0;
  transition: all var(--transition-base);
}

.dot-btn--rec:hover {
  background: var(--color-gray-200);
}

.dot-btn--rec:disabled,
.dot-btn--rec.is-disabled {
  background: var(--color-gray-900);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
  border: var(--border-width-base) solid color-mix(in srgb, var(--color-white) 16%, transparent);
}

.dot-btn--reset {
  color: var(--redPrimary);
}

.dot-btn--reset:disabled {
  background: var(--color-gray-900);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.5;
  border: var(--border-width-base) solid color-mix(in srgb, var(--color-white) 16%, transparent);
}

.dot-btn--pause {
  background: var(--color-white);
  color: var(--color-black);
  border: 0;
}

.dot-btn--pause:hover {
  background: var(--color-gray-200);
}

.dot-btn--pause:disabled {
  background: var(--color-gray-900);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.5;
  border: var(--border-width-base) solid color-mix(in srgb, var(--color-white) 16%, transparent);
}

/* ==========================================================================
   Download Button + Split State
   ========================================================================== */

.download-group {
  display: contents; /* Don't affect grid layout when not split */
}

.dot-btn--download {
  background: var(--bluePrimary);
  color: var(--color-white);
  border: 0;
  display: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  gap: var(--space-xs);
  padding-inline: var(--space-md);
}

.dot-btn--download .dot-btn__label {
  white-space: nowrap;
}

.dot-btn--download.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(0, 0) scale(1);
  display: inline-flex;
}

/* Saved state - brief confirmation */
.dot-btn--download.is-saved .dot-btn__icon,
.dot-btn--download.is-saved .dot-btn__label {
  animation: contentSwap var(--duration-normal) var(--ease-default);
}

@keyframes contentSwap {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  40% {
    opacity: 0;
    transform: scale(0.95);
  }
  60% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* FLIP morph animation */
.dot-btn--download.is-morphing-in {
  animation: downloadMorphIn var(--duration-slower) var(--ease-default);
}

@keyframes downloadMorphIn {
  from {
    transform: var(--morph-transform, translate(0, -100%) scaleX(0.5));
    opacity: 0.8;
    filter: blur(2px);
  }
  40% {
    filter: blur(0);
  }
  to {
    transform: translate(0, 0) scale(1);
    opacity: 1;
    filter: blur(0);
  }
}

/* Rec button fade during morph */
.dot-btn--rec.is-morphing {
  animation: recFadeOutIn var(--duration-slower) var(--ease-default);
}

@keyframes recFadeOutIn {
  0% {
    opacity: 1;
  }
  30% {
    opacity: 0.3;
  }
  100% {
    opacity: 1;
  }
}

.dot-btn--download:hover {
  background: color-mix(in srgb, var(--bluePrimary) 88%, black);
}

/* ==========================================================================
   Donate Button (hidden until split)
   ========================================================================== */

.dot-btn--donate {
  background: var(--color-purple-primary);
  color: var(--color-white);
  border: 0;
  display: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  gap: var(--space-xs);
  padding-inline: var(--space-md);
  flex-direction: row;
}

.dot-btn--donate .dot-btn__label {
  white-space: nowrap;
}

.dot-btn--donate .dot-btn__icon {
  font-size: var(--text-lg);
}

.dot-btn--donate:hover {
  background: color-mix(in srgb, var(--color-purple-primary) 85%, white);
}

/* ==========================================================================
   Split State - Gooey Filter Container
   ========================================================================== */

.download-group.is-split {
  display: flex;
  gap: var(--gap-xs);
  grid-column: 1 / -1;
  filter: url(#goo-light);
  align-items: center;
}

/* Safari fallback - no gooey filter */
@supports not (filter: url(#goo-light)) {
  .download-group.is-split {
    filter: none;
  }
}

.download-group.is-split .dot-btn--download {
  display: inline-flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  flex: 0 0 auto;
  width: var(--btn-size-sm);
  min-height: var(--btn-size-sm);
  padding: 0;
  justify-content: center;
  align-items: center;
}

.download-group.is-split .dot-btn--download .dot-btn__label {
  display: none;
}

.download-group.is-split .dot-btn--donate {
  display: inline-flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  flex: 1;
  justify-content: center;
  min-height: var(--btn-size-xl);
}

/* Split animations */
.download-group.is-split .dot-btn--download {
  animation: splitShrink var(--duration-slower) var(--ease-default);
}

.download-group.is-split .dot-btn--donate {
  animation: splitGrow var(--duration-slower) var(--ease-default);
}

@keyframes splitShrink {
  from {
    max-width: 100%;
    padding-inline: var(--pad-sm);
  }
  to {
    max-width: var(--btn-size-sm);
    padding-inline: 0;
  }
}

@keyframes splitGrow {
  from {
    max-width: 0;
    opacity: 0;
    padding-inline: 0;
    overflow: hidden;
  }
  50% {
    opacity: 0.5;
  }
  to {
    max-width: 100%;
    opacity: 1;
    padding-inline: var(--space-md);
    overflow: visible;
  }
}

/* Safari fallback - sequential fade instead of gooey */
@supports not (filter: url(#goo-light)) {
  .download-group.is-split .dot-btn--download {
    animation: fadeIn var(--duration-normal) var(--ease-default);
  }

  .download-group.is-split .dot-btn--donate {
    animation: fadeIn var(--duration-normal) var(--ease-default) 0.15s both;
  }

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

/* Re-download state (after split, user clicks download again) */
.download-group.is-split .dot-btn--download.is-saved .dot-btn__icon {
  animation: contentSwap var(--duration-normal) var(--ease-default);
}

/* ==========================================================================
   Donate Dialog
   ========================================================================== */

.donate-dialog {
  border: none;
  background: transparent;
  padding: 0;
  max-width: min(24rem, calc(100vw - 2rem));
  width: 100%;
  overflow: visible;
  opacity: 0;
  transform: scale(0.95);
  transition:
    opacity var(--duration-slower) var(--ease-default),
    transform var(--duration-slower) var(--ease-default);
}

.donate-dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--duration-slower) var(--ease-default);
}

.donate-dialog.is-open {
  opacity: 1;
  transform: scale(1);
}

.donate-dialog.is-open::backdrop {
  opacity: 1;
}

.donate-dialog.is-closing {
  opacity: 0;
  transform: scale(0.95);
}

.donate-dialog.is-closing::backdrop {
  opacity: 0;
}

.donate-dialog__card {
  background: var(--color-bg-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  border: var(--border-width-base) solid var(--color-purple-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  position: relative;
  text-align: center;
}

.donate-dialog__heading {
  font-family: var(--mono);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-purple-primary);
  margin: 0;
}

.donate-dialog__message {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
  max-width: 20rem;
}

.donate-dialog__actions {
  display: flex;
  gap: var(--gap-md);
  width: 100%;
  justify-content: center;
}

.donate-dialog__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-lg);
  border: none;
  background: var(--color-purple-primary);
  color: var(--color-bg-dark);
  font-family: var(--mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: background var(--transition-base);
}

.donate-dialog__btn:hover {
  background: color-mix(in srgb, var(--color-purple-primary) 88%, black);
}

.donate-dialog__btn:active {
  transform: scale(0.97);
}

.donate-dialog__btn-icon {
  font-size: 1.25em;
}

.donate-dialog__btn:focus-visible {
  outline: 2px solid var(--color-purple-primary);
  outline-offset: 3px;
}

.donate-dialog__skip {
  background: none;
  border: none;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--mono);
  font-size: var(--text-xs);
  text-transform: lowercase;
  letter-spacing: 0.1em;
  color: var(--color-muted-alt);
  cursor: pointer;
  transition: color var(--transition-base);
}

.donate-dialog__skip:hover {
  color: var(--color-white);
}

.donate-dialog__skip:focus-visible {
  outline: 2px solid var(--color-purple-primary);
  outline-offset: 2px;
}

/* Mobile */
@media (max-width: 40rem) {
  .donate-dialog__card {
    padding: var(--space-lg) var(--space-md);
  }
}

/* Reduced motion: disable dialog transitions */
@media (prefers-reduced-motion: reduce) {
  .donate-dialog,
  .donate-dialog::backdrop {
    transition: none;
  }
}

/* Touch devices: remove hover */
@media (hover: none) {
  .donate-dialog__btn:hover {
    background: var(--color-purple-primary);
  }

  .donate-dialog__skip:hover {
    color: var(--color-muted-alt);
  }
}

.dot-btn--rec.recording {
  background: var(--redPrimary);
  color: var(--color-white);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--color-red-primary) 40%, transparent);
  animation: btnPulse 2s infinite;
}

@keyframes btnPulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--color-red-primary) 40%, transparent);
  }
  70% {
    box-shadow: 0 0 0 0.625rem transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.dot-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  font-size: 1.35rem;
  letter-spacing: 0;
}

.dot-btn__label {
  flex: 1;
  text-align: left;
}

.material-symbols-outlined {
  font-variation-settings:
    'FILL' 0,
    'wght' 600,
    'GRAD' 0,
    'opsz' 24;
}

/* Error message for recording issues - hidden when empty */
.record-error {
  font-size: var(--text-sm);
  color: var(--muted);
  text-align: center;
}

.record-error:empty {
  display: none;
}

.record-error:not(:empty) {
  display: block;
  padding: var(--space-xs) 0 0;
}

/* ============================================
   HEADER ALIGNMENT
   ============================================ */

.tag {
  font-family: var(--ui);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accentPrimary);
  margin-bottom: var(--space-3xs);
}

.granular-title {
  font-family: var(--title);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-xl);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1;
}

/* ============================================
   PURCHASE LINK
   ============================================ */

.purchase-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--pad-sm);
  height: calc(var(--space-xl) + var(--space-xs));
  border-radius: var(--radius-sm);
  border: 0;
  background: var(--accentPrimary);
  color: var(--color-black);
  text-decoration: none;
  transition:
    background var(--transition-slow),
    transform var(--transition-base);
  cursor: pointer;
  flex-shrink: 0;
  margin-left: var(--gap-xs);
  margin-bottom: var(--space-3xs);
}

.purchase-link .material-symbols-outlined {
  font-size: 1.75rem;
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
  color: var(--color-black);
}

.purchase-link:hover {
  background: var(--color-purple-primary);
}

.purchase-link:active {
  transform: scale(0.98);
}

/* Flexbox layout for brand area */
.topbar__brand {
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  width: 100%;
  position: relative;
  padding-right: 0;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding-bottom: var(--space-2xs);
}

.brand-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
  min-width: 0;
}

/* Brand link styling */
.brand-link {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

.brand-link:hover .tag {
  color: var(--color-purple-primary);
}

/* ==========================================================================
   OVERRIDES LAYER - Media Queries, States, Accessibility
   ========================================================================== */

/* --------------------------------------------
   Responsive Breakpoints
   -------------------------------------------- */

@media (max-width: 73.75rem) {
  /* 1180px */
  .groove-shell {
    width: 98vw;
  }
}

@media (max-width: 60rem) {
  /* 960px */
  .groove-shell {
    max-height: none;
    height: auto;
    min-height: 100vh;
    padding: var(--pad-sm) var(--pad-xs) var(--pad-xs);
  }

  .mode-switch {
    justify-self: start;
  }

  .pads__layout {
    grid-template-columns: 1fr auto;
  }

  .control-strip {
    justify-content: flex-start;
  }

  .control-cluster {
    width: clamp(13.125rem, 48vw, 16.25rem); /* 210px, 48vw, 260px */
    flex: 0 0 auto;
  }

  /* Number size on tablet */
  .pad__number {
    font-size: clamp(2.5rem, 8vw, 3rem);
  }
}

@media (max-width: 60rem) and (orientation: portrait) {
  .pads__layout {
    grid-template-columns: 1fr;
  }

  .control-strip {
    justify-content: center;
  }

  .control-cluster {
    margin: 0 auto;
    width: clamp(16.25rem, 80vw, 23.75rem); /* 260px, 80vw, 380px */
  }
}

@media (max-width: 40rem) {
  /* 640px */
  /* Mobile: fixed-height scrollable shell with sticky controls + canvas */
  .groove-shell {
    --controls-sticky-height: 3.5rem; /* Controls bar height for sticky positioning */
    height: 100dvh;
    max-height: 100dvh;
    min-height: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    gap: var(--gap-xs); /* Tighter spacing on mobile */
  }

  .topbar {
    padding-bottom: 0; /* Remove bottom padding to reduce space above controls */
  }

  /* Controls bar (track list + toggle) stays sticky, topbar scrolls away */
  .controls-bar {
    position: sticky;
    top: 0;
    z-index: 11;
    background: var(--bgPanel);
    padding: var(--pad-xs) 0;
    gap: var(--gap-xs);
  }

  /* Toggle: thin rectangles on mobile */
  .mode-switch__option,
  .mode-switch__slider {
    width: var(--space-lg);
  }

  .mode-switch[data-mode='shards'] .mode-switch__slider {
    transform: translateX(calc(var(--space-lg) + var(--space-3xs)));
  }

  .surface {
    position: sticky;
    top: var(--controls-sticky-height);
    z-index: 10;
    height: clamp(10rem, 35vh, 14rem); /* 160px, 35vh, 224px - reduced for mobile */
    overflow: visible;
  }

  /* Visual gap below sticky canvas */
  .surface::before {
    inset: auto 0;
    top: 100%;
    height: var(--space-sm);
    background: var(--bgPanel);
  }

  .pads {
    margin-top: calc(var(--space-sm) * 2); /* Account for pseudo-element + extra space */
  }

  .pads__layout {
    grid-template-columns: 1fr;
  }

  /* Mobile: smaller pad size */
  .loop-rack {
    --pad-width: clamp(6rem, 35vw, 8rem);
    scroll-padding: var(--space-xs);
  }

  /* Number size on mobile */
  .loop-rack .pad__number {
    font-size: clamp(2rem, 10vw, 2.5rem);
  }

  .loop-rack .pad__status {
    font-size: 0.55rem;
  }

  /* Sliders on mobile – wider columns & more breathing room */
  .pad__slider-row {
    --slider-col-width: 1.6rem;
  }

  .pad__sliders {
    gap: 0.5rem;
  }

  /* Smaller toggles on mobile */
  .pad__toggle {
    --toggle-size: 1.1rem;
  }

  .pad__toggles {
    gap: 0.3rem;
    margin-left: 0.4rem;
  }

  .pad__toggle-label {
    font-size: 0.4rem;
  }

  .control-strip {
    justify-content: center;
    margin-top: var(--margin-lg);
  }

  .control-cluster {
    width: clamp(15rem, 90vw, 22.5rem); /* 240px, 90vw, 360px */
    flex: 0 0 auto;
    gap: var(--gap-sm);
    margin: 0 auto;
  }

  .purchase-link {
    padding: var(--pad-xs) var(--pad-sm);
    font-size: var(--text-xs);
    margin-left: var(--gap-xs);
  }

  .topbar__brand {
    padding-right: 0;
  }
}

/* ============================================
   TOUCH DEVICE OPTIMIZATIONS
   Disable hover effects on touch-only devices
   ============================================ */

@media (hover: none) {
  /* Mode switch - remove hover state on touch */
  .mode-switch__option[aria-checked='false']:hover {
    opacity: 0.4;
  }

  /* Dot buttons - remove hover states on touch */
  .dot-btn--rec:hover,
  .dot-btn--pause:hover {
    background: var(--color-white);
  }

  /* Keep recording state visible even when :hover is applied on tap */
  .dot-btn--rec.recording,
  .dot-btn--rec.recording:hover {
    background: var(--redPrimary);
    color: var(--color-white);
  }

  .dot-btn--download:hover {
    background: var(--bluePrimary);
  }

  .dot-btn--donate:hover {
    background: var(--color-purple-primary);
  }

  /* Purchase link - remove hover state */
  .purchase-link:hover {
    background: var(--accentPrimary);
  }

  /* Add pad button - remove hover state on touch */
  .pad--add:hover {
    border-color: var(--color-gray-400);
    opacity: 0.5;
  }

  .pad--add:hover .pad__add-icon {
    color: color-mix(in srgb, var(--color-white) 40%, transparent);
  }

  /* Track pills - reset hover on touch, keep active feedback */
  .track-pill:hover:not(.is-active) {
    color: var(--accentPrimary);
    border-color: var(--accentPrimary);
  }

  .track-pill:active {
    transform: scale(0.96);
    opacity: 0.8;
  }

  /* Pad tap feedback - handled via JS classes now */
  .pad:active:not(.pad--disabled):not(.pad--settings-open) {
    transform: scale(0.97);
  }

  /* Button tap feedback */
  .dot-btn:active:not(:disabled) {
    transform: scale(0.96);
    opacity: 0.9;
  }

  .mode-switch__option:active {
    transform: scale(0.95);
  }

  /* Toggle buttons - remove hover, add active state */
  .pad__toggle:hover .pad__toggle-circle {
    transform: none;
  }

  .pad__toggle:active .pad__toggle-circle {
    transform: scale(0.9);
  }
}

/* ============================================
   IMPROVED TOUCH TARGETS
   Minimum 44-48px for touch accessibility
   ============================================ */

@media (pointer: coarse) {
  /* Touch-specific slider overrides */
  .pad__slider {
    width: 8px;
    touch-action: pan-x;
  }

  /* Larger settings tray buttons */
  .pad-settings__btn {
    padding: 0.75rem 1rem;
    min-height: 44px;
  }

  .pad-settings__close {
    width: 32px;
    height: 32px;
  }
}

/* ============================================
   REDUCED MOTION SUPPORT
   Accessibility for vestibular motion disorders
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Disable pulsing animations */
  .pad[data-state='playing'] {
    animation: none;
    box-shadow: 0 0 0 2px var(--pad-accent);
  }

  .pad[data-state='recording'] {
    animation: none;
  }

  .dot-btn--rec.recording {
    animation: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-red-primary) 40%, transparent);
  }

  /* Static hint instead of crossfade */
  .hint__loading,
  .hint__ready {
    transition: none;
  }

  /* Disable pad animations */
  .pad--exiting,
  .pad--entering,
  .pad--pulse,
  .pad--ripple {
    animation: none;
  }
}

/* ============================================
   SAFE AREA SUPPORT
   For devices with notches/home indicators
   ============================================ */

@supports (padding: env(safe-area-inset-bottom)) {
  .groove-shell {
    padding-bottom: calc(var(--pad-sm) + env(safe-area-inset-bottom));
    padding-left: calc(var(--pad-md) + env(safe-area-inset-left));
    padding-right: calc(var(--pad-md) + env(safe-area-inset-right));
  }

  @media (max-width: 40rem) {
    .groove-shell {
      padding-left: calc(var(--pad-xs) + env(safe-area-inset-left));
      padding-right: calc(var(--pad-xs) + env(safe-area-inset-right));
    }
  }
}