.age-container {
  max-width: 710px;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--card); 
  border-radius: 1rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  font-size: 1.1rem;
  color: var(--text); 
}

.age-container:hover {
  transform: translateY(-1px);
  opacity: 1;
  }

.age-container h1 {
  font-size: 2rem;
  font-weight: 800;
  margin: .4rem 0 0.5rem;
  text-align: center;
  color: var(--text);
}

.age-container p {
  font-size: 1rem;
  text-align: center;
  color: var(--soft);
  margin-bottom: 2rem;
}

.form-card {
    flex: 1;
    width: 100% !important;
    text-align: center;
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-card input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--ring);
}

.form-label {
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

.date-input {
    width: 80%;
    padding: 1rem;
    border: 1px solid var(--border); 
    border-radius: 1rem;
    font-size: 1.1rem;
}

.date-input:focus { 
    outline: none; 
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--ring);
}

.calculate-btn {
    margin-top: 1.4rem;
}

.result {
  margin-top: 1.5rem;
  padding: 1rem;
  font-size: 1.1rem;
  text-align: center;
  border-radius: .5rem;
  background: var(--muted); 
  color: var(--text);
}

.copy-btn {
    margin-top: 1.5rem;
    background: #10b981; 
    display: none; 
}

#dob {
  position: relative;
}

#dob.empty::before {
  content: "Choose your date"; 
  position: absolute;
  left: 1rem; 
  top: 50%;
  transform: translateY(-50%);
  color: #6b7280; 
  pointer-events: none; 
}

/* When the input is empty, hide the browser's native text (e.g., mm/dd/yyyy) */
#dob.empty {
  color: transparent;
}

/* =========================
   MOBILE ENHANCEMENTS 
   ========================= */
@media (max-width: 520px) {

  .age-container {
    max-width: none !important; 
    width: 100% !important;
    padding: 1.4rem !important;
    margin: 1rem auto 1rem !important;
    border-radius: 12px !important;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1) !important;
  }

  .age-container:hover {
    transform: translateY(-1px);
    opacity: 1;
  }

  .age-container h1 {
    font-size: 1.55rem !important;
    line-height: 1.3 !important;
    text-align: center !important;
  }

  .age-container p {
    font-size: 0.92rem !important;
    font-weight: 600 !important;
    line-height: 1.55 !important;
    text-align: center !important;
    margin-bottom: 2rem !important;
  }

  .form-card {
    flex: 1;
    width: 100% !important;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
  }

 .form-card input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--ring);
} 

.form-label {
    font-weight: 800;
    display: block;
    margin-bottom: 1rem;
}

.date-input {
    width: 80%;
    padding: 1rem;
    height: 1rem;
    border-radius: 1rem;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  font-size: 1.1rem;
  line-height: 1.2;
  border-radius: 0.75rem;
  background: var(--muted);
  color: var(--text);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  word-wrap: break-word;
  transition: all 0.3s ease;
}

}