:root {
  /* Colors */
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);
  --color-select-caret: rgba(19, 52, 59, 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: rgba(31, 33, 33, 1);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: rgba(245, 245, 245, 1);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-primary: rgba(50, 184, 198, 1);
    --color-primary-hover: rgba(45, 166, 178, 1);
    --color-primary-active: rgba(41, 150, 161, 1);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-secondary-hover: rgba(119, 124, 124, 0.25);
    --color-secondary-active: rgba(119, 124, 124, 0.3);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-error: rgba(255, 84, 89, 1);
    --color-success: rgba(50, 184, 198, 1);
    --color-warning: rgba(230, 129, 97, 1);
    --color-info: rgba(167, 169, 169, 1);
    --color-focus-ring: rgba(50, 184, 198, 0.4);
    --color-btn-primary-text: rgba(19, 52, 59, 1);
    --color-card-border: rgba(119, 124, 124, 0.2);
    --color-card-border-inner: rgba(119, 124, 124, 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(119, 124, 124, 0.2);
    --color-border-secondary: rgba(119, 124, 124, 0.2);
    --color-select-caret: rgba(245, 245, 245, 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: 50, 184, 198;
    --color-error-rgb: 255, 84, 89;
    --color-warning-rgb: 230, 129, 97;
    --color-info-rgb: 167, 169, 169;
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  --color-background: rgba(31, 33, 33, 1);
  --color-surface: rgba(38, 40, 40, 1);
  --color-text: rgba(245, 245, 245, 1);
  --color-text-secondary: rgba(167, 169, 169, 0.7);
  --color-primary: rgba(50, 184, 198, 1);
  --color-primary-hover: rgba(45, 166, 178, 1);
  --color-primary-active: rgba(41, 150, 161, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-secondary-hover: rgba(119, 124, 124, 0.25);
  --color-secondary-active: rgba(119, 124, 124, 0.3);
  --color-border: rgba(119, 124, 124, 0.3);
  --color-error: rgba(255, 84, 89, 1);
  --color-success: rgba(50, 184, 198, 1);
  --color-warning: rgba(230, 129, 97, 1);
  --color-info: rgba(167, 169, 169, 1);
  --color-focus-ring: rgba(50, 184, 198, 0.4);
  --color-btn-primary-text: rgba(19, 52, 59, 1);
  --color-card-border: rgba(119, 124, 124, 0.15);
  --color-card-border-inner: rgba(119, 124, 124, 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(119, 124, 124, 0.2);
  --color-select-caret: rgba(245, 245, 245, 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: 50, 184, 198;
  --color-error-rgb: 255, 84, 89;
  --color-warning-rgb: 230, 129, 97;
  --color-info-rgb: 167, 169, 169;
}

[data-color-scheme="light"] {
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
}

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

.btn--primary:active {
  background: var(--color-primary-active);
}

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-text);
}

.btn--secondary:hover {
  background: var(--color-secondary-hover);
}

.btn--secondary:active {
  background: var(--color-secondary-active);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-secondary);
}

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* 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-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* Dark theme overrides for electronic music aesthetic */
:root {
  --color-background: #0a0a0a;
  --color-surface: #1a1a1a;
  --color-text: #ffffff;
  --color-text-secondary: #b0b0b0;
  --color-primary: #00ff88;
  --color-primary-hover: #00dd77;
  --color-primary-active: #00bb66;
  --color-accent: #ff0088;
  --color-accent-hover: #dd0077;
  --color-border: #333333;
  --color-card-border: #2a2a2a;
  --neon-glow: 0 0 10px var(--color-primary);
  --neon-glow-strong: 0 0 20px var(--color-primary);
}

body {
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  color: var(--color-text);
  font-family: var(--font-family-base);
  min-height: 100vh;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-20);
  display: grid;
  gap: var(--space-20);
}

/* Header */
.app-header {
  text-align: center;
  padding: var(--space-32) 0;
  background: linear-gradient(45deg, #ff0088, #00ff88);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-header h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-8);
  text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Card styling */
.card {
  background: rgba(26, 26, 26, 0.9);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--neon-glow), 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Track Info */
.track-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.track-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
}

.meta-item {
  padding: var(--space-6) var(--space-12);
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
}

.track-samples {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Main Controls */
.main-controls .card__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  align-items: center;
}

.transport-controls {
  display: flex;
  align-items: center;
  gap: var(--space-24);
}

.play-button {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent));
  color: #000;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) var(--ease-standard);
  box-shadow: var(--neon-glow);
  position: relative;
}

.play-button:hover {
  transform: scale(1.05);
  box-shadow: var(--neon-glow-strong);
}

.play-button.playing {
  background: linear-gradient(45deg, var(--color-accent), #ff4444);
}

.record-button {
  min-width: 126px;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}

.record-button:hover {
  transform: translateY(-1px);
}

.record-button.recording {
  background: linear-gradient(45deg, #d14b4b, #ff7a59);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255, 122, 89, 0.2), 0 0 24px rgba(255, 90, 90, 0.3);
}

.record-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff4d4d;
  box-shadow: 0 0 0 6px rgba(255, 77, 77, 0.12);
}

.record-button.recording .record-dot {
  background: #fff1f1;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.16);
}

.play-text {
  margin-left: var(--space-4);
}

.transport-info {
  flex: 1;
}

.helper-text,
.sample-status {
  margin: var(--space-8) 0 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.time-display {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.progress-container {
  width: 100%;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0%;
  transition: width 0.1s ease;
  box-shadow: 0 0 10px var(--color-primary);
}

/* Global Controls */
.global-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.control-group {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.control-group label {
  min-width: 100px;
  font-weight: var(--font-weight-medium);
}

.volume-slider, .tempo-slider {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  outline: none;
  -webkit-appearance: none;
}

.volume-slider::-webkit-slider-thumb,
.tempo-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--neon-glow);
}

.volume-value, .tempo-value {
  min-width: 80px;
  text-align: right;
  font-family: var(--font-family-mono);
  color: var(--color-primary);
}

/* Track Structure Timeline */
.timeline {
  position: relative;
  display: flex;
  min-height: 92px;
  border-radius: var(--radius-base);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
  margin-top: var(--space-16);
}

.timeline-section {
  border: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-8);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  transition: transform var(--duration-fast), background-color var(--duration-fast), box-shadow var(--duration-fast);
  background: linear-gradient(160deg, color-mix(in srgb, var(--section-color) 26%, rgba(8, 10, 14, 0.94)), rgba(3, 5, 8, 0.92));
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
}

.timeline-section:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
}

.timeline-section.is-active-scene {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--section-color) 70%, white 30%), 0 0 0 1px var(--section-glow);
}

.timeline-section.is-current {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.32), 0 0 18px var(--section-glow);
}

.section-label {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.section-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-family: var(--font-family-mono);
}

.section-meta {
  margin-top: var(--space-6);
  font-size: var(--font-size-xs);
  color: color-mix(in srgb, white 74%, var(--section-color) 26%);
}

.timeline-marker {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: var(--color-primary);
  box-shadow: var(--neon-glow);
  transition: left 0.1s ease;
}

/* Track Controls */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-16);
}

.track-control {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-base);
  padding: var(--space-16);
  transition: all var(--duration-fast);
}

.track-control:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.track-control.muted {
  opacity: 0.5;
  background: rgba(255, 0, 0, 0.1);
}

.track-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.track-header h4 {
  margin: 0;
  color: var(--color-primary);
}

.mute-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--duration-fast);
}

.mute-btn:hover {
  background: rgba(255, 0, 0, 0.2);
  border-color: #ff4444;
}

.mute-btn.active {
  background: #ff4444;
  color: white;
  box-shadow: 0 0 10px #ff4444;
}

.track-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-12);
}

.track-volume {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.track-volume label {
  min-width: 60px;
  font-size: var(--font-size-sm);
}

.track-volume-slider {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  outline: none;
  -webkit-appearance: none;
}

.track-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
}

.volume-display {
  min-width: 40px;
  font-size: var(--font-size-sm);
  font-family: var(--font-family-mono);
  color: var(--color-primary);
}

/* Effects Controls */
.effects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-24);
}

.effect-control {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.effect-control input[type="range"] {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  outline: none;
  -webkit-appearance: none;
}

.effect-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px var(--color-accent);
}

.sampler-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-20);
}

.rhythm-grid {
  display: grid;
  gap: var(--space-20);
}

.rhythm-lane {
  background: rgba(0, 0, 0, 0.26);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-base);
  padding: var(--space-16);
}

.rhythm-lane__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.rhythm-lane__header h4 {
  margin-bottom: 4px;
}

.rhythm-summary {
  min-width: 96px;
  text-align: right;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.sample-upload {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.sample-upload input[type="file"] {
  width: 100%;
}

.scene-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-10);
  justify-content: flex-end;
}

.scene-btn.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
}

.arrangement-editor {
  display: grid;
  gap: var(--space-12);
  margin-top: var(--space-16);
}

.arrangement-row {
  display: grid;
  grid-template-columns: 60px minmax(0, 2fr) minmax(0, 1.4fr) 120px auto;
  gap: var(--space-12);
  align-items: end;
  padding: var(--space-14);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-base);
  background: rgba(0, 0, 0, 0.26);
}

.arrangement-field {
  min-width: 0;
}

.arrangement-field--index {
  align-self: center;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.arrangement-field--bars {
  max-width: 120px;
}

.arrangement-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: flex-end;
}

.step-grid-group {
  grid-column: 1 / -1;
}

.step-grid-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.sampler-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: var(--space-8);
}

.step-toggle {
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  background: color-mix(in srgb, var(--color-surface) 92%, var(--color-secondary) 8%);
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.step-toggle:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border) 55%);
}

.step-toggle.active {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.24), rgba(0, 136, 255, 0.22));
  border-color: color-mix(in srgb, var(--color-primary) 78%, white 22%);
  box-shadow: 0 0 0 1px rgba(0, 255, 136, 0.14), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.step-toggle--accent.active {
  background: linear-gradient(135deg, rgba(255, 88, 143, 0.22), rgba(255, 187, 71, 0.24));
  border-color: color-mix(in srgb, var(--color-accent) 72%, white 28%);
  box-shadow: 0 0 0 1px rgba(255, 88, 143, 0.14), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.step-toggle--kick.active {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.24), rgba(39, 218, 255, 0.22));
  border-color: rgba(0, 255, 136, 0.68);
  box-shadow: 0 0 0 1px rgba(0, 255, 136, 0.14), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.step-toggle--snare.active {
  background: linear-gradient(135deg, rgba(255, 95, 95, 0.25), rgba(255, 176, 71, 0.24));
  border-color: rgba(255, 127, 80, 0.72);
  box-shadow: 0 0 0 1px rgba(255, 111, 87, 0.16), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.step-toggle--hat.active {
  background: linear-gradient(135deg, rgba(76, 167, 255, 0.22), rgba(177, 136, 255, 0.24));
  border-color: rgba(122, 159, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(122, 159, 255, 0.16), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-20);
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  justify-content: flex-end;
}

.effect-value {
  font-family: var(--font-family-mono);
  color: var(--color-accent);
  text-align: center;
}

/* Visualizer */
.beat-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-20);
}

.beat-indicators {
  display: flex;
  gap: var(--space-16);
}

.beat-indicator {
  width: 60px;
  height: 60px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  transition: all var(--duration-fast);
  position: relative;
}

.beat-indicator::before {
  content: attr(data-beat);
  color: var(--color-text-secondary);
}

.beat-indicator.active {
  border-color: var(--color-primary);
  background: rgba(0, 255, 136, 0.2);
  box-shadow: var(--neon-glow);
  transform: scale(1.1);
}

.beat-indicator.active::before {
  color: var(--color-primary);
}

.cycle-counter {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.example-library-list {
  display: grid;
  gap: var(--space-16);
}

.example-card {
  padding: var(--space-16);
  border-radius: var(--radius-base);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.28);
}

.example-card__header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-16);
  align-items: flex-start;
  margin-bottom: var(--space-12);
}

.example-card__header h4 {
  margin: 0 0 var(--space-6);
  color: var(--color-primary);
}

.example-card__header p {
  margin: 0;
  color: var(--color-text-secondary);
}

.example-card__actions {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.example-code {
  margin: 0;
  padding: var(--space-16);
  border-radius: var(--radius-base);
  background: rgba(2, 4, 8, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: #9ff9d2;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  overflow-x: auto;
  white-space: pre-wrap;
}

/* Code Section */
.code-section {
  background: rgba(26, 26, 26, 0.9);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-border);
}

.code-header h3 {
  color: var(--color-primary);
  margin: 0;
}

.code-controls {
  display: flex;
  gap: var(--space-8);
}

.code-control-btn {
  display: none;
}

.code-control-btn.visible {
  display: inline-flex;
}

.code-editor {
  padding: var(--space-16);
  display: none;
}

.code-editor.visible {
  display: block;
}

.code-textarea {
  width: 100%;
  height: 400px;
  background: #000;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: var(--space-16);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  resize: vertical;
}

.strudel-embed {
  margin-top: var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
  min-height: 300px;
  background: rgba(0, 0, 0, 0.5);
}

/* Info Panel */
.info-panel .instructions ul {
  list-style: none;
  padding: 0;
}

.info-panel .instructions li {
  padding: var(--space-8) 0;
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-16);
  margin: var(--space-8) 0;
}

/* Notification styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.notification--success {
  background-color: #00ff88;
  color: #000;
}

.notification--error {
  background-color: #ff4444;
}

.notification--info {
  background-color: #0088ff;
}

.notification--warning {
  background-color: #ffaa00;
  color: #000;
}

.site-footer {
  text-align: center;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(240, 248, 255, 0.62);
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-container {
    padding: var(--space-16);
    gap: var(--space-16);
  }
  
  .main-controls .card__body {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }
  
  .tracks-grid {
    grid-template-columns: 1fr;
  }
  
  .effects-grid {
    grid-template-columns: 1fr;
  }

  .project-header {
    flex-direction: column;
  }

  .scene-buttons {
    justify-content: flex-start;
  }
  
  .timeline {
    flex-direction: column;
    height: auto;
  }

  .arrangement-row {
    grid-template-columns: 1fr;
  }

  .arrangement-actions {
    justify-content: flex-start;
  }

  .example-card__header {
    flex-direction: column;
  }

  .step-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .step-grid-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .code-header {
    flex-direction: column;
    gap: var(--space-12);
    align-items: stretch;
  }
  
  .code-controls {
    justify-content: center;
  }
}