:root {
    --primary-color: #1877f2;
    --secondary-color: #fff;
    --accent-color: #222;
    --text-color: #1c1e21;
    --border-radius: 16px;
    --gradient-start: #1877f2;
    --gradient-end: #222;
  }

  body {
    background: linear-gradient(135deg, #f0f2f5 0%, #fff 100%);
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
    padding: 40px 0;
    color: var(--text-color);
  }

  .lookup-box {
    background: #fff;
    max-width: 800px;
    margin: auto;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
  }

  .lookup-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  }

  .logo-container {
    text-align: center;
  }

  .logo-container img {
    max-width: 200px;
    height: auto;
    margin-bottom: 20px;
  }

  .page-title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2.5rem;
    text-align: center;
  }

  .form-control {
    height: 56px;
    font-size: 16px;
    border-radius: 12px;
    border: 2px solid #e4e6eb;
    padding: 0 20px;
    transition: all 0.3s ease;
    background: #f0f2f5;
    color: var(--accent-color);
  }

  .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(24, 119, 242, 0.1);
    background: #fff;
    color: var(--accent-color);
  }

  .btn-primary {
    height: 56px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    border: none;
    padding: 0 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    color: #fff;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(24, 119, 242, 0.2);
    background: linear-gradient(45deg, var(--gradient-end), var(--gradient-start));
    color: #fff;
  }

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-primary i {
    margin-right: 8px;
  }

  .result-card {
    margin-top: 30px;
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e4e6eb;
    position: relative;
    overflow: hidden;
  }

  .result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
  }

  .result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }

  .result-card h6 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
  }

  .result-card h6 i {
    margin-right: 10px;
    font-size: 1.2rem;
  }

  .result-card p {
    margin-bottom: 15px;
    font-size: 15px;
    color: #222;
    display: flex;
    align-items: center;
  }

  .result-card p strong {
    color: var(--accent-color);
    margin-right: 8px;
    min-width: 60px;
  }

  .copy-btn {
    background: #f0f2f5;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    margin-left: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    color: var(--accent-color);
  }

  .copy-btn:hover {
    background: #e4e6eb;
    color: var(--primary-color);
  }

  .copy-btn i {
    color: #65676b;
    transition: all 0.3s ease;
  }

  .copy-success {
    background: var(--primary-color) !important;
    color: #fff !important;
  }

  .copy-success i {
    color: #fff !important;
  }

  .copy-tooltip {
    position: absolute;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }

  .copy-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: var(--primary-color) transparent transparent transparent;
  }

  .copy-tooltip.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
  }

  .stats-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 20px;
    margin-top: 30px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
    text-align: center;
    border: 1px solid #e4e6eb;
    position: relative;
    overflow: hidden;
  }

  .stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  }

  .stats-card p {
    color: #65676b;
    margin-bottom: 8px;
    font-size: 14px;
  }

  .stats-number {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .toast {
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    margin-top: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
    opacity: 0;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .toast i {
    font-size: 1.2rem;
  }

  @keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
  }

  @keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
  }

  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }

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

  @media (max-width: 768px) {
    .lookup-box {
      padding: 30px 20px;
      margin: 0 15px;
    }
    
    .page-title {
      font-size: 1.8rem;
    }
    
    .form-control, .btn-primary {
      height: 50px;
    }

    .logo-container img {
      max-width: 150px;
    }
  }

  .execution-time {
    font-size: 0.9rem;
    color: #65676b;
    margin-left: 10px;
    font-weight: normal;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: #f0f2f5;
    padding: 4px 8px;
    border-radius: 6px;
  }

  .execution-time i {
    color: var(--primary-color);
  }

  .result-card h6 {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
  }
  .result-icon {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-right: 8px;
    display: flex;
    align-items: center;
  }
  .result-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-right: auto;
    margin-left: 8px;
    display: flex;
    align-items: center;
  }
  .execution-time {
    font-size: 0.95rem;
    color: #65676b;
    font-weight: normal;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: #f0f2f5;
    padding: 4px 10px;
    border-radius: 6px;
  }
  .execution-time i {
    color: var(--primary-color);
  }
  .result-card.error {
  background: #ffe6e6;
  border: 1px solid #ff4d4f;
  padding: 25px 30px;
  border-radius: var(--border-radius);
  color: #b00020;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-top: 30px;
  box-shadow: 0 4px 16px rgba(255, 77, 79, 0.15);
  position: relative;
  animation: shake 0.3s ease;
}

.result-card.error .result-icon {
  font-size: 1.5rem;
  color: #ff4d4f;
  flex-shrink: 0;
}

.result-card.error h6 {
  font-size: 1.1rem;
  margin: 0 0 8px;
  color: #b00020;
  font-weight: 700;
}

.result-card.error p {
  margin: 0;
  font-size: 15px;
  color: #b00020;
}

.result-card.error::before {
  display: none;
}

@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
  100% { transform: translateX(0); }
}