/* ============================================================
   CARDS.CSS — Aero Glass Cards with 3D Tilt & Glow
   ============================================================ */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ── Aero Card ── */
.card-aero {
  position: relative;
  border-radius: var(--radius-md);
  min-height: 340px;
  overflow: hidden;
  transition: all 0.2s;
  transform-style: preserve-3d;
  perspective: 1000px;
  cursor: none;
  animation: card-glass-hue 10s linear infinite;
}

.card-aero:hover {
  transform: scale3d(1.06, 1.06, 1.06);
  animation: card-glass-hue 10s linear infinite, strobe 0.15s infinite;
}

/* ── Rotating Rainbow Border Ring ── */
.card-aero::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: calc(var(--radius-md) + 3px);
  background: var(--grad-rainbow);
  background-size: 400% 400%;
  z-index: 0;
  pointer-events: none;
  animation: rainbow-spin 2s linear infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 3px;
}

/* ── Card Background Glow ── */
.card-bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  z-index: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  animation: card-bg-color-cycle 4s ease-in-out infinite;
}

.card-bg-glow--blue    { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-blue); }
.card-bg-glow--purple  { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-purple); }
.card-bg-glow--green   { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-green); }
.card-bg-glow--orange  { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-orange); }
.card-bg-glow--cyan    { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-cyan); }
.card-bg-glow--pink    { width: 300px; height: 300px; top: -60px; right: -60px; background: var(--glow-pink); }

/* ── Card Inner Content ── */
.card-inner {
  position: relative;
  z-index: 2;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
}

/* ── Card Icon ── */
.card-icon-wrap {
  position: relative;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.card-icon-glow {
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--grad-rainbow);
  filter: blur(20px);
  opacity: 0.6;
  transition: all 0.2s;
  animation: breathe 2s ease-in-out infinite;
}

.card-aero:hover .card-icon-glow {
  opacity: 0.8;
  filter: blur(40px);
  transform: scale(1.3);
  animation: breathe 0.8s ease-in-out infinite;
}

.card-icon {
  position: relative;
  font-size: 2rem;
  z-index: 1;
  filter: drop-shadow(0 0 10px rgba(255,255,255,0.3));
}

/* ── Card Title & Desc ── */
.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  text-shadow:
    0 0 10px var(--glow-pink),
    0 0 20px var(--glow-cyan),
    0 0 30px var(--glow-purple),
    0 0 40px rgba(0, 229, 255, 0.4),
    0 0 60px rgba(0, 229, 255, 0.2);
  animation: card-title-rainbow-shadow 3s linear infinite;
}

.card-desc {
  font-size: 0.95rem;
  color: rgba(180, 200, 230, 0.55);
  line-height: 1.65;
  flex: 1;
}

/* ── Card Shine Sweep ── */
.card-shine {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.15) 0%,
    rgba(255,255,255,0.02) 50%,
    transparent 100%
  );
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  pointer-events: none;
  z-index: 3;
  opacity: 1;
  animation: card-shine-sweep 1s ease-in-out infinite;
}

/* ── Card Border Glow ── */
.card-border-glow {
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-md) + 2px);
  background: var(--grad-rainbow);
  background-size: 400% 400%;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.2s;
  pointer-events: none;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 2px;
  animation: rainbow-spin 2s linear infinite;
}

/* ── Holo Shimmer Overlay ── */
.card-aero.holo-shimmer::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    105deg,
    transparent 0%,
    transparent 30%,
    rgba(255,255,255,0.06) 32%,
    rgba(0,229,255,0.08) 40%,
    rgba(180,77,255,0.08) 48%,
    rgba(255,92,176,0.06) 55%,
    transparent 58%,
    transparent 70%,
    rgba(255,255,255,0.04) 72%,
    transparent 100%
  );
  background-size: 200% 100%;
  z-index: 4;
  pointer-events: none;
  opacity: 1;
  animation: holo-sweep 3s ease-in-out infinite;
}

/* ════════════════════════════════════════════════════════════
   KEYFRAMES — Speed 2-3x, all glows 3-5x
   ════════════════════════════════════════════════════════════ */

@keyframes card-glass-hue {
  0%   { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

@keyframes card-bg-color-cycle {
  0%   { filter: blur(80px) hue-rotate(0deg); transform: scale(1); }
  25%  { transform: scale(1.12); }
  50%  { filter: blur(80px) hue-rotate(180deg); transform: scale(1); }
  75%  { transform: scale(1.12); }
  100% { filter: blur(80px) hue-rotate(360deg); transform: scale(1); }
}

@keyframes card-title-rainbow-shadow {
  0%   { text-shadow: 0 0 10px var(--glow-pink), 0 0 20px var(--glow-cyan), 0 0 30px var(--glow-purple), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
  20%  { text-shadow: 0 0 10px var(--glow-orange), 0 0 20px var(--glow-green), 0 0 30px var(--glow-blue), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
  40%  { text-shadow: 0 0 10px var(--glow-green), 0 0 20px var(--glow-purple), 0 0 30px var(--glow-pink), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
  60%  { text-shadow: 0 0 10px var(--glow-cyan), 0 0 20px var(--glow-blue), 0 0 30px var(--glow-orange), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
  80%  { text-shadow: 0 0 10px var(--glow-purple), 0 0 20px var(--glow-pink), 0 0 30px var(--glow-cyan), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
  100% { text-shadow: 0 0 10px var(--glow-pink), 0 0 20px var(--glow-cyan), 0 0 30px var(--glow-purple), 0 0 40px rgba(0, 229, 255, 0.4), 0 0 60px rgba(0, 229, 255, 0.2); }
}

@keyframes card-shine-sweep {
  0%, 100% { opacity: 0.2; }
  50%      { opacity: 1; }
}

@keyframes strobe {
  0%, 100% { box-shadow: 0 0 40px var(--glow-cyan), 0 0 80px var(--glow-purple), 0 0 120px var(--glow-blue); }
  20%  { box-shadow: 0 0 60px var(--glow-pink), 0 0 100px var(--glow-orange), 0 0 140px var(--glow-pink); }
  40%  { box-shadow: 0 0 80px var(--glow-green), 0 0 120px var(--glow-cyan), 0 0 160px var(--glow-green); }
  60%  { box-shadow: 0 0 60px var(--glow-purple), 0 0 100px var(--glow-blue), 0 0 140px var(--glow-purple); }
  80%  { box-shadow: 0 0 40px var(--glow-orange), 0 0 80px var(--glow-pink), 0 0 120px var(--glow-orange); }
}

@keyframes breathe {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 0.8; transform: scale(1.15); }
}

@keyframes rainbow-spin {
  0%   { background-position: 0% 50%; }
  100% { background-position: 400% 50%; }
}

@keyframes holo-sweep {
  0%   { background-position: 200% 0; }
  40%  { background-position: 0% 0; }
  60%  { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}