.card {
  --card-border: rgba(128, 214, 237, 0.24);
  --card-bg: linear-gradient(155deg, rgba(11, 41, 64, 0.72), rgba(7, 24, 39, 0.68));
  --card-text: rgba(208, 230, 240, 0.95);
  --card-icon-bg: rgba(39, 210, 238, 0.14);
  --card-icon-border: rgba(128, 214, 237, 0.44);
  --card-icon-color: #cdf0fc;
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  display: grid;
  gap: 12px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(3px);
  transition: transform 0.3s var(--ease), border 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(87, 202, 237, 0.2), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.card:hover::after {
  opacity: 1;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(174, 233, 251, 0.4);
  box-shadow: 0 24px 38px rgba(2, 10, 18, 0.26);
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--card-icon-border);
  background: var(--card-icon-bg);
  display: grid;
  place-items: center;
  color: var(--card-icon-color);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.card-icon::before {
  content: '';
  position: absolute;
  inset: -40%;
  border-radius: 50%;
  background: conic-gradient(from 180deg, rgba(91, 214, 245, 0), rgba(99, 224, 255, 0.54), rgba(91, 214, 245, 0));
  opacity: 0.52;
  transform: rotate(0deg);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  animation: iconSpin 16s linear infinite;
}

.card-icon::after {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 10px;
  background: linear-gradient(160deg, rgba(9, 50, 76, 0.82), rgba(7, 26, 40, 0.8));
  border: 1px solid rgba(171, 233, 252, 0.24);
  z-index: 0;
}

.card-icon-img {
  width: 26px;
  height: 26px;
  display: block;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 6px rgba(88, 221, 255, 0.24));
}

.card:hover .card-icon::before {
  opacity: 0.88;
  transform: scale(1.08);
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--section-heading);
}

.card p {
  color: var(--card-text);
}

.section-light .card,
.card[data-tone='light'] {
  --card-border: rgba(15, 42, 66, 0.14);
  --card-bg: linear-gradient(180deg, #ffffff, #f8fbff);
  --card-text: #3a5a74;
  --card-icon-bg: rgba(14, 165, 233, 0.16);
  --card-icon-border: rgba(14, 165, 233, 0.32);
  --card-icon-color: #0f5680;
}

.section-light .card-icon::before,
.card[data-tone='light'] .card-icon::before {
  opacity: 0.34;
}

.section-light .card-icon::after,
.card[data-tone='light'] .card-icon::after {
  background: linear-gradient(160deg, rgba(232, 246, 252, 0.98), rgba(214, 238, 248, 0.96));
  border-color: rgba(41, 151, 195, 0.26);
}

[data-surface='light'] .card {
  --card-border: rgba(15, 42, 66, 0.14);
  --card-bg: linear-gradient(180deg, #ffffff, #f8fbff);
  --card-text: #3a5a74;
  --card-icon-bg: rgba(14, 165, 233, 0.16);
  --card-icon-border: rgba(14, 165, 233, 0.32);
  --card-icon-color: #0f5680;
}

.list-grid {
  display: grid;
  gap: 12px;
}

.list-item {
  --list-bg: rgba(8, 33, 52, 0.52);
  --list-border: rgba(128, 214, 237, 0.22);
  --list-text: var(--section-text);
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--list-border);
  background: var(--list-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  backdrop-filter: blur(2px);
  transition: transform 0.25s var(--ease), border 0.25s var(--ease), background 0.25s var(--ease);
}

.list-item span {
  font-size: 0.9rem;
  color: var(--list-text);
}

.list-item:hover {
  transform: translateX(3px);
  border-color: rgba(168, 230, 250, 0.42);
  background: linear-gradient(160deg, rgba(16, 67, 99, 0.62), rgba(10, 36, 56, 0.66));
}

.section-light .list-item {
  --list-bg: linear-gradient(180deg, #ffffff, #f8fbff);
  --list-border: rgba(15, 42, 66, 0.14);
  --list-text: #355570;
}

[data-surface='light'] .list-item,
.list-item[data-tone='light'] {
  --list-bg: linear-gradient(180deg, #ffffff, #f8fbff);
  --list-border: rgba(15, 42, 66, 0.14);
  --list-text: #355570;
}

@keyframes iconSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-icon::before {
    animation: none;
  }
}