:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
  --success-color: #27ae60;
  --error-color: #e74c3c;
  --warning-color: #f39c12;
  --pdf-color: #9b59b6;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f8f9fa;
  color: var(--dark-color);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header Styles */
header {
  background: linear-gradient(135deg, var(--primary-color), #34495e);
  color: white;
  padding: 30px 20px;
  text-align: center;
  margin-bottom: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  font-weight: 700;
}

header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Form Container */
.form-container {
  background-color: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  margin-bottom: 30px;
}

/* Form Layout */
.form-group {
  margin-bottom: 30px;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
  align-items: flex-start;
}

.form-col {
  flex: 1;
  min-width: 200px;
  padding: 0 10px;
  margin-bottom: 20px;
}

.form-col-2 {
  flex: 2;
}

/* Form Elements */
label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--dark-color);
  font-size: 0.95rem;
}

.required {
  color: var(--error-color);
  font-weight: bold;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e1e8ed;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-family: inherit;
  transition: var(--transition);
  background-color: #fff;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

input:invalid,
textarea:invalid {
  border-color: var(--error-color);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

/* Checkbox Styles */
.checkbox-group,
.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 10px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  padding: 8px 0;
}

.checkbox-item input[type="checkbox"] {
  width: auto;
  margin-right: 10px;
  transform: scale(1.2);
  accent-color: var(--secondary-color);
}

.checkbox-item label {
  margin-bottom: 0;
  cursor: pointer;
  font-weight: 500;
}

/* Section Headers */
h3 {
  color: var(--primary-color);
  font-size: 1.4rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--light-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Signature Styles */
.signature-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 40px;
}

.signature-box {
  flex: 1;
  min-width: 300px;
}

.signature-pad {
  width: 100%;
  height: 150px;
  border: 2px solid #ddd;
  border-radius: var(--border-radius);
  background-color: white;
  cursor: crosshair;
  touch-action: none;
  margin: 10px 0;
  transition: var(--transition);
}

.signature-pad:hover {
  border-color: var(--secondary-color);
}

.signature-controls {
  text-align: center;
  margin-top: 10px;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--secondary-color);
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  margin: 5px;
  min-width: 140px;
  justify-content: center;
}

.btn:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  min-width: auto;
}

.btn-print {
  background-color: var(--success-color);
}

.btn-print:hover {
  background-color: #219653;
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.btn-clear {
  background-color: var(--error-color);
}

.btn-clear:hover {
  background-color: #c0392b;
  box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.btn-pdf {
  background-color: var(--pdf-color);
}

.btn-pdf:hover {
  background-color: #8e44ad;
  box-shadow: 0 4px 12px rgba(155, 89, 182, 0.3);
}

.button-group {
  margin-top: 40px;
  text-align: center;
  padding-top: 30px;
  border-top: 2px solid var(--light-color);
}

/* Error Messages */
.error-message {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 5px;
  display: none;
}

.error-message.show {
  display: block;
}

/* Company Info */
.company-info {
  background-color: var(--light-color);
  padding: 25px;
  border-radius: var(--border-radius);
  margin-top: 30px;
  text-align: center;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dark-color);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.loading-overlay.show {
  display: flex;
}

.loading-spinner {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--box-shadow);
}

.loading-spinner i {
  font-size: 2rem;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

/* Message Container */
.message-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.message {
  padding: 15px 20px;
  margin-bottom: 10px;
  border-radius: var(--border-radius);
  color: white;
  font-weight: 500;
  box-shadow: var(--box-shadow);
  animation: slideIn 0.3s ease;
}

.message.success {
  background-color: var(--success-color);
}

.message.error {
  background-color: var(--error-color);
}

.message.warning {
  background-color: var(--warning-color);
}

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

/* Print Styles */
@media print {
  .no-print {
    display: none !important;
  }

  body {
    background-color: white;
    font-size: 12px;
  }

  .container {
    max-width: none;
    padding: 0;
  }

  .form-container {
    box-shadow: none;
    padding: 20px;
    margin: 0;
  }

  header {
    background: var(--primary-color) !important;
    -webkit-print-color-adjust: exact;
    color-adjust: exact;
  }

  .signature-pad {
    border: 1px solid #000;
  }

  .form-row {
    margin: 0;
  }

  .form-col {
    padding: 0 5px;
  }

  h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
  }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }

  header {
    padding: 20px 15px;
  }

  header h1 {
    font-size: 2rem;
  }

  .form-container {
    padding: 20px;
  }

  .form-col {
    min-width: 100%;
    padding: 0 5px;
  }

  .signature-container {
    flex-direction: column;
    gap: 20px;
  }

  .signature-box {
    min-width: 100%;
  }

  .btn {
    width: 100%;
    margin: 5px 0;
    justify-content: center;
  }

  .checkbox-grid {
    grid-template-columns: 1fr;
  }

  .checkbox-item {
    padding: 12px 0;
    border-bottom: 1px solid #eee;
  }

  .checkbox-item:last-child {
    border-bottom: none;
  }

  .checkbox-item input[type="checkbox"] {
    transform: scale(1.5);
    margin-right: 15px;
  }

  .message-container {
    left: 10px;
    right: 10px;
    top: 10px;
  }

  .message {
    margin-bottom: 5px;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.8rem;
  }

  .form-container {
    padding: 15px;
  }

  .signature-pad {
    height: 120px;
  }

  .company-info {
    padding: 15px;
    font-size: 12px;
  }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  input,
  textarea,
  select {
    border-width: 3px;
  }

  .btn {
    border: 2px solid currentColor;
  }
}

/* Focus visible for better keyboard navigation */
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--secondary-color);
  outline-offset: 2px;
}
