CustomCursor.css

/* ═══════════════════════════════════════════════════════════════════════════
   CustomCursor.css — QUANTUM THEME-REACTIVE v5.0
   PASTE THIS → src/components/CustomCursor.css

   How theme reactivity works:
   • All cursor colors use CSS variables (--cursor-dot-color, etc.)
   • ThemeContext sets [data-theme='dark'|'light'] on <html>
   • global.css defines different values per theme
   • All cursor elements inherit the right color INSTANTLY on toggle
   • Zero JS needed for color — pure CSS variable propagation
═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────
   BASE DOT — inner precision core
───────────────────────────────────────────────────────────── */
.c-dot {
  position: fixed;
  pointer-events: none;
  z-index: 99999;
  top: 0; left: 0;
  transform: translate(-50%, -50%);

  width: var(--cursor-dot-size, 8px);
  height: var(--cursor-dot-size, 8px);
  border-radius: 50%;

  background: var(--cursor-dot-color);
  box-shadow: var(--cursor-glow);

  mix-blend-mode: var(--cursor-blend, screen);

  /* Color transitions follow theme-toggle speed */
  transition:
    background    0.55s cubic-bezier(0.4,0,0.2,1),
    box-shadow    0.55s cubic-bezier(0.4,0,0.2,1),
    mix-blend-mode 0.55s ease,
    width         0.18s cubic-bezier(0.34,1.56,0.64,1),
    height        0.18s cubic-bezier(0.34,1.56,0.64,1),
    opacity       0.18s ease;

  will-change: left, top, width, height;
}

/* ─────────────────────────────────────────────────────────────
   OUTER RING — lagged follower
───────────────────────────────────────────────────────────── */
.c-ring {
  position: fixed;
  pointer-events: none;
  z-index: 99998;
  top: 0; left: 0;
  transform: translate(-50%, -50%);

  width: 38px;
  height: 38px;
  border-radius: 50%;

  border: var(--cursor-ring-border, 2px solid rgba(0,255,238,0.65));
  box-shadow: var(--cursor-ring-glow);

  mix-blend-mode: var(--cursor-blend, screen);

  transition:
    border-color  0.55s cubic-bezier(0.4,0,0.2,1),
    box-shadow    0.55s cubic-bezier(0.4,0,0.2,1),
    background    0.35s ease,
    mix-blend-mode 0.55s ease,
    width         0.32s cubic-bezier(0.34,1.56,0.64,1),
    height        0.32s cubic-bezier(0.34,1.56,0.64,1),
    opacity       0.22s ease;

  will-change: left, top, width, height;
}

/* ─────────────────────────────────────────────────────────────
   EXPANDED STATE — on hover of interactive elements
───────────────────────────────────────────────────────────── */
.c-ring.expand {
  width: 62px;
  height: 62px;
  border: var(--cursor-ring-expand-border, 2px solid rgba(191,0,255,0.85));
  box-shadow: var(--cursor-expand-glow);
  background: rgba(124,58,237,0.06);
}

/* Dark expand bg */
[data-theme='dark'] .c-ring.expand {
  background: rgba(191,0,255,0.10);
}
/* Light expand bg — warm gold tint */
[data-theme='light'] .c-ring.expand {
  background: rgba(217,119,6,0.10);
}

/* ─────────────────────────────────────────────────────────────
   MAGNETIC DOT STATE — on links (dashed spinner)
───────────────────────────────────────────────────────────── */
.c-ring.on-link {
  animation: ringMagSpin 1.6s linear infinite;
  border-style: dashed;
  border-width: 1.5px;
}
@keyframes ringMagSpin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ─────────────────────────────────────────────────────────────
   TRAIL RING — furthest lag, dreamy echo
───────────────────────────────────────────────────────────── */
.c-trail {
  position: fixed;
  pointer-events: none;
  z-index: 99997;
  top: 0; left: 0;
  transform: translate(-50%, -50%);

  width: 70px;
  height: 70px;
  border-radius: 50%;

  border: 1px solid var(--cursor-trail-color);
  box-shadow: var(--cursor-trail-glow);
  opacity: 0.55;

  mix-blend-mode: var(--cursor-blend, screen);

  transition:
    border-color  0.55s ease,
    box-shadow    0.55s ease,
    width         0.5s ease,
    height        0.5s ease,
    opacity       0.5s ease;

  will-change: left, top;
}

/* ─────────────────────────────────────────────────────────────
   CLICK BURST — dot pulses
───────────────────────────────────────────────────────────── */
.c-dot.clicking {
  animation: dotQuantumBurst 0.38s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes dotQuantumBurst {
  0%   { transform: translate(-50%, -50%) scale(1);   opacity: 1; }
  35%  { transform: translate(-50%, -50%) scale(3.2); opacity: 0.5; }
  65%  { transform: translate(-50%, -50%) scale(1.5); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1);   opacity: 1; }
}

/* ─────────────────────────────────────────────────────────────
   CLICK BURST — ring ripples
───────────────────────────────────────────────────────────── */
.c-ring.clicking {
  animation: ringQuantumBurst 0.45s cubic-bezier(0.19,1,0.22,1);
}
@keyframes ringQuantumBurst {
  0%   { transform: translate(-50%, -50%) scale(1);   opacity: 1; }
  45%  { transform: translate(-50%, -50%) scale(2.2); opacity: 0.3; }
  100% { transform: translate(-50%, -50%) scale(1);   opacity: 1; }
}

/* ─────────────────────────────────────────────────────────────
   PARTICLE BURST — spawned on click via JS
───────────────────────────────────────────────────────────── */
.c-particle {
  position: fixed;
  pointer-events: none;
  z-index: 99996;
  top: 0; left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cursor-particle-color);
  box-shadow: var(--cursor-glow);
  transform: translate(-50%, -50%);
  animation: particleQuantum 0.7s ease-out forwards;
  transition: background 0.55s ease, box-shadow 0.55s ease;
}
@keyframes particleQuantum {
  0%   { opacity: 1; transform: translate(calc(-50% + 0px), calc(-50% + 0px)) scale(1); }
  100% {
    opacity: 0;
    transform: translate(
      calc(-50% + var(--px, 30px)),
      calc(-50% + var(--py, -30px))
    ) scale(0.2);
  }
}

/* ─────────────────────────────────────────────────────────────
   MAGNETIC TRAIL DOTS — fading orbs left behind
───────────────────────────────────────────────────────────── */
.c-mag-dot {
  position: fixed;
  pointer-events: none;
  z-index: 99995;
  border-radius: 50%;
  background: var(--cursor-dot-color);
  transform: translate(-50%, -50%);
  animation: magTrailFade 0.55s ease-out forwards;
  transition: background 0.55s ease;
}
@keyframes magTrailFade {
  0%   { opacity: 0.55; width: 6px; height: 6px; }
  100% { opacity: 0;    width: 2px; height: 2px; }
}

/* ─────────────────────────────────────────────────────────────
   SCAN LINE — sweeps across cursor area on theme toggle
───────────────────────────────────────────────────────────── */
.c-scan {
  position: fixed;
  pointer-events: none;
  z-index: 99994;
  top: 0; left: -100%;
  width: 200px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cursor-dot-color), transparent);
  box-shadow: var(--cursor-glow);
  animation: scanSweep 0.6s ease-out forwards;
  transition: background 0.55s ease;
}
@keyframes scanSweep {
  0%   { left: -200px; opacity: 1; }
  100% { left: calc(100vw + 200px); opacity: 0; }
}

/* ─────────────────────────────────────────────────────────────
   TEXT CURSOR STATE — when hovering text
───────────────────────────────────────────────────────────── */
.c-dot.on-text {
  width: 3px;
  height: 20px;
  border-radius: 2px;
  animation: textCursorBlink 1.1s step-end infinite;
}
@keyframes textCursorBlink {
  50% { opacity: 0; }
}

/* ─────────────────────────────────────────────────────────────
   IMAGE CURSOR STATE — crosshair on images
───────────────────────────────────────────────────────────── */
.c-dot.on-image {
  width: 36px;
  height: 36px;
  background: transparent;
  border: 2px solid var(--cursor-dot-color);
  box-shadow: var(--cursor-ring-glow), inset 0 0 8px rgba(0,255,238,0.15);
}
.c-dot.on-image::before,
.c-dot.on-image::after {
  content: '';
  position: absolute;
  background: var(--cursor-dot-color);
}
.c-dot.on-image::before {
  width: 1px; height: 12px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.c-dot.on-image::after {
  width: 12px; height: 1px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

/* ─────────────────────────────────────────────────────────────
   HIDE ON MOBILE / TOUCH
───────────────────────────────────────────────────────────── */
@media (max-width: 768px),
       (hover: none),
       (pointer: coarse) {
  .c-dot,
  .c-ring,
  .c-trail,
  .c-particle,
  .c-mag-dot,
  .c-scan {
    display: none !important;
  }
}