:root{--color-bg-dark: #090d16;--color-bg-light: #0d1527;--color-card-bg: rgba(20, 27, 45, .65);--color-card-border: rgba(255, 255, 255, .07);--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-accent: #5ec8c0;--color-accent-glow: rgba(94, 200, 192, .3);--color-in-tune: #10b981;--color-in-tune-glow: rgba(16, 185, 129, .35);--color-flat: #f59e0b;--color-flat-glow: rgba(245, 158, 11, .3);--color-sharp: #ef4444;--color-sharp-glow: rgba(239, 68, 68, .3);--transition-fast: .15s ease;--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0;user-select:none;-webkit-user-select:none}.icon-svg{width:1.15em;height:1.15em;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;display:inline-block;vertical-align:middle;transition:transform 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