/* Basic Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  /* Body, Font, Colors */
  body {
    font-family: Arial, sans-serif;
    background-color: #F9FAFB;
    color: #333;
    line-height: 1.5;
  }
  
  /* Header */
  .page-header {
    background-color: #2563EB;
    color: #fff;
    text-align: center;
    padding: 2rem 1rem;
    margin-bottom: 2rem;
  }
  .page-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  .subtitle {
    font-size: 1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
  }
  
  /* Container */
  .container {
    width: 90%;
    max-width: 850px;
    margin: 0 auto;
  }
  
  /* Calculator Cards */
  .calc-card {
    background-color: #fff;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  }
  .calc-card h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: #111827;
  }
  .calc-desc {
    margin-bottom: 1rem;
    color: #555;
    font-size: 0.95rem;
  }
  
  /* Rows for Labels & Inputs */
  .calc-row {
    display: flex;
    align-items: center;
    gap: 0.5rem; 
    margin-bottom: 1rem;
  }
  .calc-row label {
    font-weight: 600;
    margin: 0; /* Keep label close to input */
  }
  .calc-row input {
    width: 100%;
    max-width: 120px;
    padding: 0.45rem;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  /* Buttons & Results */
  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    background-color: #2563EB;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
  }
  .btn-primary:hover {
    background-color: #1D4ED8;
  }
  .result {
    margin-top: 0.5rem;
    font-weight: 600;
    color: #10B981; /* green text for success */
  }
  
  /* Info / FAQ Section */
  .info-section {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
  }
  .info-section h2 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: #111827;
  }
  .info-section p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: #555;
  }
  .info-section a {
    color: #2563EB;
    text-decoration: none;
  }
  .info-section a:hover {
    text-decoration: underline;
  }

  .result-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 1rem;
  }
  
  .copy-icon {
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
  }
  
  .copy-icon svg {
    fill: #555;
  }
  
  .copy-label {
    font-size: 0.9rem;
    color: #555;
  }
  
  .favorite-tip {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
  }
  
  .tip-icon {
    fill: #555;
  }
  
  .tip-label {
    font-size: 0.9rem;
    color: #555;
  }