/* Canvas overlay for birthday confetti */
#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
}

/* Form Styles */
#age-form {
  display: flex;
  flex-direction: column;
}

/* Result Styles */
.result-panel {
  min-height: 350px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem;
}

.result-content {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.age-main-display {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem 1rem;
  text-align: center;
  margin: 1.5rem 0 2rem;
  padding: 1.5rem;
  background: rgba(var(--primary-rgb), 0.05);
  border: 1px dashed rgba(var(--primary-rgb), 0.25);
  border-radius: var(--radius-md);
}

.age-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.age-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  grid-row: 2;
}

/* Details Grid */
.details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (max-width: 480px) {
  .details-grid {
    grid-template-columns: 1fr;
  }
  .age-number {
    font-size: 2rem;
  }
}

.detail-card {
  background: rgba(0, 0, 0, 0.015);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.detail-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.detail-value {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Countdown Section */
.countdown-container {
  background: rgba(var(--primary-rgb), 0.03);
  border: 1px solid rgba(var(--primary-rgb), 0.12);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.countdown-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  margin-top: 0.75rem;
  overflow: hidden;
}

.countdown-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-main);
  border-radius: 4px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}