/*==============================
   SYMPTOM GUIDE (homepage)
==============================*/

.symptom-guide {
  padding: var(--space-10) 0;
}

.symptom-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.symptom-card {
  position: relative;
  grid-column: span 4;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  text-decoration: none;
  background: linear-gradient(155deg, var(--primary-light) 0%, var(--primary) 100%);
  border: 1px solid var(--side-border, rgba(255, 255, 255, 0.08));
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1), box-shadow 0.35s ease,
    border-color 0.35s ease;
}

.symptom-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(
    120px circle at var(--x, 50%) var(--y, 50%),
    rgba(245, 158, 11, 0.18),
    transparent 70%
  );
  transition: opacity 0.35s ease;
}

.symptom-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: var(--shadow-lg);
}

.symptom-card:hover::before {
  opacity: 1;
}

.symptom-card-featured {
  grid-column: span 8;
}

.symptom-card-wide {
  grid-column: span 12;
  flex-direction: row-reverse;
  justify-content: flex-end;
}

.symptom-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--secondary);
  background: rgba(245, 158, 11, 0.12);
  transition: background 0.35s ease, color 0.35s ease;
}

.symptom-card:hover .symptom-icon {
  background: var(--secondary);
  color: var(--primary);
}

.symptom-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.symptom-title {
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--side-text-strong, #fff);
}

.symptom-card-featured .symptom-title {
  font-size: var(--fs-lg);
}

.symptom-desc {
  font-size: var(--fs-sm);
  color: var(--gray-400);
}

.symptom-arrow {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  border: 1px solid var(--side-border, rgba(255, 255, 255, 0.12));
  transform: translateX(8px);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1), opacity 0.35s ease,
    background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.symptom-card:hover .symptom-arrow {
  transform: translateX(0);
  opacity: 1;
  background: var(--secondary);
  color: var(--primary);
  border-color: var(--secondary);
}

/* ---------- per-card icon micro-animations, on hover ---------- */

.symptom-card:hover .symptom-icon i {
  animation-duration: 0.7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

.anim-spark:hover .symptom-icon i {
  animation-name: symptom-spark;
}

.anim-blink:hover .symptom-icon i {
  animation-name: symptom-blink;
}

.anim-shake:hover .symptom-icon i {
  animation-name: symptom-shake;
}

.anim-rev:hover .symptom-icon i {
  animation-name: symptom-rev;
}

.anim-spin:hover .symptom-icon i {
  animation-name: symptom-spin;
  animation-duration: 1.4s;
  animation-timing-function: linear;
}

.anim-drip:hover .symptom-icon i {
  animation-name: symptom-drip;
}

@keyframes symptom-spark {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.18) rotate(-8deg);
  }
}

@keyframes symptom-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.25;
  }
}

@keyframes symptom-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-3px);
  }
  75% {
    transform: translateX(3px);
  }
}

@keyframes symptom-rev {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-3px) scale(1.08);
  }
}

@keyframes symptom-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes symptom-drip {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(3px);
  }
}

/*==============================
       RESPONSIVE
==============================*/

@media (max-width: 900px) {
  .symptom-card,
  .symptom-card-featured {
    grid-column: span 6;
  }
}

@media (max-width: 640px) {
  .symptom-grid {
    gap: var(--space-4);
  }

  .symptom-card,
  .symptom-card-featured,
  .symptom-card-wide {
    grid-column: span 12;
    padding: var(--space-5);
  }

  .symptom-icon {
    width: 50px;
    height: 50px;
    font-size: 18px;
  }

  .symptom-arrow {
    opacity: 1;
    transform: translateX(0);
  }
}