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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

header {
  background: #1a1a2e;
  color: white;
  padding: 1rem 2rem;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-content h1 {
  font-size: 1.5rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

main {
  min-height: calc(100vh - 140px);
  padding: 2rem 1rem;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

footer {
  background: #1a1a2e;
  color: white;
  text-align: center;
  padding: 1rem;
}

h2 {
  margin-bottom: 1.5rem;
  color: #1a1a2e;
}

.subtitle {
  color: #666;
  margin-bottom: 2rem;
}

.form-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card h3 {
  color: #1a1a2e;
  margin-bottom: 0.5rem;
}

.card p {
  color: #666;
  font-size: 0.9rem;
}

.form {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

fieldset {
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

legend {
  font-weight: 600;
  color: #1a1a2e;
  padding: 0 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 500;
  color: #444;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="file"],
select,
textarea {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #1a1a2e;
  box-shadow: 0 0 0 2px rgba(26, 26, 46, 0.1);
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: #1a1a2e;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  font-size: 1rem;
  transition: background 0.2s;
}

.btn:hover {
  background: #2d2d4e;
}

.btn-primary {
  background: #4a6fa5;
  font-size: 1.1rem;
  padding: 0.8rem 2rem;
}

.btn-primary:hover {
  background: #3a5a8a;
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: #4a6fa5;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

.upload-notice {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.upload-notice h4 {
  margin-bottom: 0.5rem;
  color: #856404;
}

.upload-notice ul {
  margin-left: 1.2rem;
  color: #856404;
}

.upload-notice ul ul {
  margin-top: 0.3rem;
}

.upload-status {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #666;
}

.signature-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.signature-pad-container {
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  background: #fafafa;
}

#signature-pad {
  width: 100%;
  height: 150px;
  border: 1px dashed #ccc;
  border-radius: 4px;
  background: white;
  cursor: crosshair;
}

.signature-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.signature-alternative {
  padding: 1rem;
  background: #f9f9f9;
  border-radius: 4px;
}

.trip-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  padding: 1rem;
  background: #f9f9f9;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.total-row {
  margin-top: 1rem;
  padding: 0.8rem;
  background: #e8f4e8;
  border-radius: 4px;
  text-align: right;
}

.message {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 4px;
}

.message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.error-box {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.error-box h2 {
  color: #dc3545;
}

.error-box p {
  margin: 1rem 0;
  color: #666;
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .trip-row {
    grid-template-columns: 1fr;
  }
  
  .form-cards {
    grid-template-columns: 1fr;
  }
}