/* ================================================================
   components.css — Reusable UI components
   ================================================================
   EDIT THIS FILE WHEN:
   - You want to change how a button looks
   - You want to add a new tag colour
   - You want to adjust the cursor size / glow
   - You want to change tag styles

   TABLE OF CONTENTS:
   1.  Custom Cursor
   2.  Galaxy Background (canvas + nebulas + shooting stars)
   3.  Buttons
   4.  Tags / Badges
   ================================================================ */

/* ----------------------------------------------------------------
   1. CUSTOM CURSOR
   ---------------------------------------------------------------- */
.cursor {
  position: fixed;
  width: 12px;
  height: 12px;
  background: var(--color-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition:
    transform 0.1s ease,
    background 0.2s ease;
  box-shadow:
    0 0 15px var(--color-cyan),
    0 0 30px var(--color-cyan);
}

/* Slightly enlarged ring that trails the cursor */
.cursor-trail {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: calc(var(--z-cursor) - 1);
  transform: translate(-50%, -50%);
  transition:
    left 0.08s linear,
    top 0.08s linear;
  opacity: 0.35;
}

/* ----------------------------------------------------------------
   2. GALAXY BACKGROUND
   ---------------------------------------------------------------- */

/* Starfield canvas — fills entire viewport, fixed behind everything */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1; /* sits behind all content */
  pointer-events: none;
}

/* Nebula blobs — large blurred colour clouds */
.nebula {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  animation: nebulaPulse 8s ease-in-out infinite alternate;
}

.nebula--purple {
  width: 600px;
  height: 600px;
  top: -150px;
  left: -150px;
  background: radial-gradient(
    circle,
    rgba(180, 0, 255, 0.15) 0%,
    transparent 70%
  );
}

.nebula--cyan {
  width: 500px;
  height: 500px;
  bottom: -100px;
  right: -100px;
  background: radial-gradient(
    circle,
    rgba(0, 245, 255, 0.12) 0%,
    transparent 70%
  );
  animation-delay: -4s;
}

.nebula--pink {
  width: 400px;
  height: 400px;
  top: 40%;
  left: 40%;
  background: radial-gradient(
    circle,
    rgba(255, 0, 110, 0.08) 0%,
    transparent 70%
  );
  animation-delay: -2s;
}

/* Shooting stars — thin horizontal streaks */
.shooting-star {
  position: fixed;
  width: 120px;
  height: 1px;
  pointer-events: none;
  z-index: -1;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-cyan),
    transparent
  );
  animation: shoot linear infinite;
}

/* Each star gets its own top/delay/duration via inline style in index.html */

/* ----------------------------------------------------------------
   3. BUTTONS
   ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

/* Shine sweep effect on hover (works on both button types) */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.btn:hover::before {
  transform: translateX(0);
}

/* --- Filled / Primary button --- */
.btn--primary {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: #000;
  border: none;
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 0 40px rgba(0, 245, 255, 0.6);
  transform: translateY(-2px);
}

/* --- Outlined button --- */
.btn--outline {
  background: transparent;
  color: var(--color-cyan);
  border: 1px solid var(--color-cyan);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
}

.btn--outline:hover {
  background: rgba(0, 245, 255, 0.08);
  box-shadow: 0 0 25px rgba(0, 245, 255, 0.3);
  transform: translateY(-2px);
}

/* ----------------------------------------------------------------
   4. TAGS / BADGES
   To add a new colour, copy any tag-colour block below
   and create a matching class in index.html / data/projects.js
   ---------------------------------------------------------------- */
.tag {
  display: inline-block;
  padding: 0.22rem 0.75rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Cyan */
.tag--cyan {
  background: rgba(0, 245, 255, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 245, 255, 0.25);
}

/* Purple */
.tag--purple {
  background: rgba(180, 0, 255, 0.1);
  color: #d066ff;
  border: 1px solid rgba(180, 0, 255, 0.25);
}

/* Pink */
.tag--pink {
  background: rgba(255, 0, 110, 0.1);
  color: #ff77aa;
  border: 1px solid rgba(255, 0, 110, 0.25);
}

/* Gold */
.tag--gold {
  background: rgba(255, 214, 10, 0.1);
  color: var(--color-gold);
  border: 1px solid rgba(255, 214, 10, 0.25);
}

/* Green  ← add more like this */
.tag--green {
  background: rgba(0, 255, 136, 0.1);
  color: #00ff88;
  border: 1px solid rgba(0, 255, 136, 0.25);
}