/* ========================================
   Spotlight Card CSS
   by mahedi amin
   Version 2.0.0
   All colors are dynamic via CSS variables
   ======================================== */

/* ========================================
   CSS Variables (Defaults)
   ======================================== */
:root {
  /* Spotlight Color (HSL format: h, s%, l%) */
  --spotlight-color: 210, 100%, 60%;

  /* Gradient Colors (set dynamically via JS) */
  --spotlight-gradient-1: 210, 100%, 60%;
  --spotlight-gradient-2: 280, 100%, 60%;
  --spotlight-gradient-3: none;
  --spotlight-gradient-4: none;
  --spotlight-gradient-5: none;
  --spotlight-gradient-count: 2;

  /* Card Styling */
  --spotlight-card-bg: rgba(15, 15, 15, 0.9);
  --spotlight-card-border: rgba(255, 255, 255, 0.1);
  --spotlight-card-radius: 16px;

  /* Spotlight Effect */
  --spotlight-size: 350px;
  --spotlight-opacity: 0.15;
  --spotlight-border-opacity: 0.5;

  /* Animation */
  --spotlight-transition: opacity 0.3s ease;
}

/* ========================================
   Base Card Styles
   ======================================== */
.spotlight-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* ========================================
   Spotlight Overlay (Background Glow)
   ======================================== */
.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    var(--spotlight-size) var(--spotlight-size) at var(--mouse-x, 50%)
      var(--mouse-y, 50%),
    hsla(var(--spotlight-color), var(--spotlight-opacity)),
    transparent 100%
  );
  opacity: 0;
  transition: var(--spotlight-transition);
  pointer-events: none;
  z-index: 1;
  border-radius: inherit;
}

/* ========================================
   Border Glow Effect
   ======================================== */
.spotlight-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    calc(var(--spotlight-size) * 0.8) calc(var(--spotlight-size) * 0.8) at
      var(--mouse-x, 50%) var(--mouse-y, 50%),
    hsla(var(--spotlight-color), var(--spotlight-border-opacity)),
    transparent 100%
  );
  border-radius: inherit;
  opacity: 0;
  transition: var(--spotlight-transition);
  pointer-events: none;
  z-index: 0;

  /* Mask to show only border */
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 2px;
}

/* ========================================
   Show Effect on Hover
   ======================================== */
.spotlight-card:hover::before,
.spotlight-card:hover::after {
  opacity: 1;
}

/* ========================================
   Card Content
   ======================================== */
.spotlight-card-content {
  position: relative;
  z-index: 2;
  padding: 24px;
  height: 100%;
}

/* ========================================
   BORDER ONLY MODE
   Only shows the border glow, no background
   ======================================== */
.spotlight-card[data-variant="border"],
.spotlight-card--border {
  --spotlight-opacity: 0;
}

.spotlight-card[data-variant="border"]::before,
.spotlight-card--border::before {
  display: none;
}

.spotlight-card[data-variant="border"]::after,
.spotlight-card--border::after {
  --spotlight-border-opacity: 0.8;
  padding: 2px;
}

/* ========================================
   GRADIENT MODE (2 colors)
   ======================================== */
.spotlight-card[data-variant="gradient"]::before,
.spotlight-card--gradient::before {
  background: radial-gradient(
    var(--spotlight-size) var(--spotlight-size) at var(--mouse-x, 50%)
      var(--mouse-y, 50%),
    hsla(var(--spotlight-gradient-1), var(--spotlight-opacity)),
    hsla(var(--spotlight-gradient-2), calc(var(--spotlight-opacity) * 0.5)),
    transparent 100%
  );
}

.spotlight-card[data-variant="gradient"]::after,
.spotlight-card--gradient::after {
  background: radial-gradient(
    calc(var(--spotlight-size) * 0.8) calc(var(--spotlight-size) * 0.8) at
      var(--mouse-x, 50%) var(--mouse-y, 50%),
    hsla(var(--spotlight-gradient-1), var(--spotlight-border-opacity)),
    hsla(
      var(--spotlight-gradient-2),
      calc(var(--spotlight-border-opacity) * 0.7)
    ),
    transparent 100%
  );
}

/* ========================================
   GRADIENT BORDER ONLY MODE
   ======================================== */
.spotlight-card[data-variant="gradient-border"]::before,
.spotlight-card--gradient-border::before {
  display: none;
}

.spotlight-card[data-variant="gradient-border"]::after,
.spotlight-card--gradient-border::after {
  background: radial-gradient(
    calc(var(--spotlight-size) * 0.8) calc(var(--spotlight-size) * 0.8) at
      var(--mouse-x, 50%) var(--mouse-y, 50%),
    hsla(var(--spotlight-gradient-1), 0.9),
    hsla(var(--spotlight-gradient-2), 0.7),
    transparent 100%
  );
  padding: 2px;
}

/* ========================================
   Size Variants
   ======================================== */
.spotlight-card[data-size="sm"] {
  --spotlight-size: 200px;
}

.spotlight-card[data-size="md"] {
  --spotlight-size: 350px;
}

.spotlight-card[data-size="lg"] {
  --spotlight-size: 500px;
}

.spotlight-card[data-size="xl"] {
  --spotlight-size: 700px;
}

/* ========================================
   Intensity Variants
   ======================================== */
.spotlight-card[data-intensity="low"] {
  --spotlight-opacity: 0.08;
  --spotlight-border-opacity: 0.25;
}

.spotlight-card[data-intensity="medium"] {
  --spotlight-opacity: 0.15;
  --spotlight-border-opacity: 0.5;
}

.spotlight-card[data-intensity="high"] {
  --spotlight-opacity: 0.25;
  --spotlight-border-opacity: 0.75;
}

/* ========================================
   AUTOPLAY MODE
   ======================================== */
.spotlight-card[data-autoplay="true"],
.spotlight-card--autoplay {
  --mouse-x: 50%;
  --mouse-y: 50%;
}

.spotlight-card[data-autoplay="true"]::before,
.spotlight-card[data-autoplay="true"]::after,
.spotlight-card--autoplay::before,
.spotlight-card--autoplay::after {
  opacity: 1;
}

/* ========================================
   Proximity Mode (always visible)
   ======================================== */
.spotlight-card[data-mode="proximity"]::before,
.spotlight-card[data-mode="proximity"]::after,
.spotlight-card--proximity::before,
.spotlight-card--proximity::after {
  opacity: 1;
}

/* ========================================
   Card Grid Layout Helper
   ======================================== */
.spotlight-card-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ========================================
   Disabled State
   ======================================== */
.spotlight-card[data-disabled="true"]::before,
.spotlight-card[data-disabled="true"]::after,
.spotlight-card--disabled::before,
.spotlight-card--disabled::after {
  display: none;
}

/* ========================================
   Focus State (Accessibility)
   ======================================== */
.spotlight-card:focus-visible {
  outline: 2px solid hsla(var(--spotlight-color), 0.8);
  outline-offset: 2px;
}

.spotlight-card:focus-visible::before,
.spotlight-card:focus-visible::after {
  opacity: 1;
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  .spotlight-card::before,
  .spotlight-card::after {
    transition: none;
  }

  .spotlight-card[data-autoplay="true"]::before,
  .spotlight-card[data-autoplay="true"]::after,
  .spotlight-card--autoplay::before,
  .spotlight-card--autoplay::after {
    animation: none;
    opacity: 1;
    --mouse-x: 50%;
    --mouse-y: 50%;
  }
}