:root {
  --primary-color: #4a6cf7;
  --primary-dark: #3a56d4;
  --secondary-color: #6c757d;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --border-color: #dee2e6;
  --border-radius: 4px;
  --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #f5f7fb;
}

.container {
  max-width: 1600px; /* Increased from 800px to match library container */
  width: 95%; /* Ensure it takes up most of the available width */
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
  position: relative;
  flex-wrap: wrap;
}

.logo-container {
  flex: 0 0 auto;
  margin-right: 1.5rem;
  display: flex;
  align-items: center;
}

.logo {
  max-width: 450px;
  height: auto;
  object-fit: contain;
  max-height: 200px;
}

.header-text {
  flex: 1;
}

header h1 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

header p {
  color: var(--secondary-color);
}

/* Navigation */
.main-nav {
  display: flex;
  margin-top: 1rem;
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.nav-link {
  padding: 0.75rem 1.5rem;
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

main {
  background-color: white;
  border-radius: 8px;
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

/* Fix for container within container issue */
.library-container,
.qr-generator-container,
.help-container {
  background-color: transparent !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.form-group {
  margin-bottom: 1.5rem;
}

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

.required {
  color: var(--danger-color);
}

input[type="url"],
input[type="text"],
select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

input[type="url"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.2);
}

select {
  background-color: white;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23007CB2%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem top 50%;
  background-size: 0.65rem auto;
  padding-right: 2rem;
}

/* Range input styles */
input[type="range"] {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  background: #ddd;
  border-radius: 5px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--primary-color);
  border: none;
  cursor: pointer;
}

.helper-text {
  font-size: 0.8rem;
  color: var(--secondary-color);
  margin-top: 0.25rem;
}

#utm-form {
  padding: 2rem;
}

.utm-params {
  background-color: #f8f9fa;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
}

.form-actions {
  text-align: center;
}

button {
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

#generate-btn {
  background-color: var(--primary-color);
  color: white;
}

#generate-btn:hover {
  background-color: var(--primary-dark);
}

#reset-btn {
  background-color: var(--secondary-color);
  color: white;
}

#reset-btn:hover {
  background-color: #5a6268;
}

.hidden {
  display: none;
}

#result {
  padding: 2rem;
  border-top: 1px solid var(--border-color);
}

#result h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.result-group {
  margin-bottom: 1.5rem;
}

.result-value {
  display: flex;
  align-items: center;
}

.result-value input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  font-size: 1rem;
  background-color: #f8f9fa;
}

.copy-btn, .qr-btn {
  padding: 0.75rem;
  background-color: var(--light-color);
  border: 1px solid var(--border-color);
  border-left: none;
}

.copy-btn {
  border-radius: 0;
}

.qr-btn {
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.copy-btn:hover, .qr-btn:hover {
  background-color: #e2e6ea;
}

/* When there's no QR button, copy button should have right border radius */
.copy-btn:last-child {
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

footer {
  text-align: center;
  margin-top: 2rem;
  color: var(--secondary-color);
  font-size: 0.9rem;
}

#toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--success-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  z-index: 1000;
}

.toast-content {
  display: flex;
  align-items: center;
}

.toast-content i {
  margin-right: 0.5rem;
}

/* Login Screen */
.login-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #f5f7fb;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.login-container.hidden {
  display: none !important;
}

.container.hidden {
  display: none !important;
}

.login-box {
  background-color: white;
  border-radius: 8px;
  box-shadow: var(--box-shadow);
  padding: 2rem;
  width: 90%;
  max-width: 500px;
  text-align: center;
}

.login-logo-container {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  width: 100%;
}

.login-logo {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 250px;
}

.login-box h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.login-box p {
  margin-bottom: 2rem;
  color: var(--secondary-color);
}

.login-btn {
  background-color: #4285F4;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
}

.login-btn i {
  margin-right: 0.5rem;
}

.login-btn:hover {
  background-color: #3367D6;
}

.login-error {
  margin-top: 1rem;
  color: var(--danger-color);
  font-size: 0.9rem;
}

/* Header Controls */
.header-controls {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-greeting {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.logout-btn {
  background-color: var(--secondary-color);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.logout-btn:hover {
  background-color: #5a6268;
}

/* Responsive styles */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  #utm-form, #result {
    padding: 1.5rem;
  }
  
  .utm-params {
    padding: 1rem;
  }
  
  .login-box {
    width: 95%;
    padding: 1.5rem;
  }
}