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

body {
  font-family: -apple-system, Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #8bd7d5 0%, #91ebf5 100%);
  min-height: 100vh;
  padding: 20px;
}

.header-nav {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-nav h1 {
  color: white;
  margin: 0;
  font-size: 2rem;
  font-weight: 300;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.nav-link {
  color: white;
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  white-space: nowrap;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-1px);
}

/* ------------------------------------------------------ счетчик вопросов */
.questions-counter {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  font-weight: 400;
  text-align: center;
  margin-top: 0.5rem;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
}

.questions-counter:hover {
  color: rgba(255, 255, 255, 1);
  transform: translateY(-1px);
}
/* ------------------------------------------------------ мэйн */
.container {
  max-width: 1200px;
  margin: 0 auto;
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

h1 {
  color: white;
  text-align: center;
  padding: 2rem;
  margin: 0;
  font-size: 2.5rem;
  font-weight: 300;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* ------------------------------------------------------ информация о компании */
.company-info {
  background: #f8f9fa;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  border-bottom: 1px solid #e9ecef;
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #495057;
  font-size: 1.4rem;
  text-transform: uppercase;
  letter-spacing: 1.6px;
}

.input-group input {
  padding: 12px 16px;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  background: white;
  width: 100%;
}

.input-group input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  transform: translateY(-1px);
}

.input-group input::placeholder {
  color: #adb5bd;
}

/* ------------------------------------------------------ контейнер вопросов */
#questions-container {
  padding: 2rem;
}

/* ------------------------------------------------------ секции */
#questions-container > div {
  margin-bottom: 3rem;
}

#questions-container h2 {
  color: #495057;
  font-size: 2.4rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid #667eea;
  font-weight: 400;
  text-align: center;
}

#questions-container h3 {
  color: #6c757d;
  font-size: 1.8rem;
  margin: 1.5rem 0 1rem 0;
  font-weight: 500;
  position: relative;
  padding-left: 1rem;
  text-align: center;
}

/* ------------------------------------------------------ вопросы */
.question {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  position: relative;
}

.question:hover {
  background: #f1f3f4;
  border-color: #dee2e6;
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.question label {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
  font-weight: 500;
  color: #495057;
  line-height: 1.5;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  word-break: break-word;
}

.question input[type='checkbox'] {
  margin-right: 12px;
  margin-top: 2px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: #667eea;
  font-size: 1.2rem;
  letter-spacing: 0.1px;
  flex-shrink: 0;
}

.question input[type='text'] {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #ced4da;
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.2rem;
  background: white;
  transition: all 0.2s ease;
}

.question input[type='text']:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.question input[type='text']::placeholder {
  color: #adb5bd;
  font-style: italic;
}

/* ------------------------------------------------------ секция предупреждений */
.warnings-section {
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
  color: white;
  padding: 2rem;
  border-radius: 12px;
  margin-top: 2rem;
}

.warnings-section h2 {
  color: white !important;
  border-bottom-color: rgba(255, 255, 255, 0.3) !important;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.warnings-list {
  list-style: none;
  padding: 0;
}

.warnings-list li {
  background: rgba(255, 255, 255, 0.1);
  padding: 1rem 1.5rem;
  margin-bottom: 0.8rem;
  border-radius: 8px;
  border-left: 4px solid rgba(255, 255, 255, 0.5);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  word-break: break-word;
}

.warnings-list li:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
}

.warnings-list li::before {
  content: '⚠️';
  margin-right: 10px;
  font-size: 1.1em;
}

/* ------------------------------------------------------ кнопка отправки */
#submit-btn {
  background: linear-gradient(135deg, #48ffa3, #20c997);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 2rem;
  display: block;
  width: calc(100% - 4rem);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#submit-btn:hover {
  background: linear-gradient(135deg, #218838, #1ea085);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);
}

#submit-btn:active {
  transform: translateY(0);
}

/* ------------------------------------------------------ сообщение об успехе */
#success-message {
  background: linear-gradient(135deg, #28a745, #20c997);
  color: white;
  padding: 1rem 2rem;
  margin: 1rem 2rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  opacity: 1;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
}

.hidden {
  opacity: 0 !important;
  transform: translateY(-10px) !important;
  pointer-events: none;
}

/* ------------------------------------------------------ адаптивность */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .header-nav {
    padding: 1rem;
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .header-nav h1 {
    font-size: 1.8rem;
  }

  .nav-link {
    font-size: 0.85rem;
    padding: 0.6rem 1.2rem;
  }

  .questions-counter {
    font-size: 0.8rem;
    margin-top: 0.8rem;
    letter-spacing: 0.3px;
  }

  h1 {
    font-size: 2rem;
    padding: 1.5rem;
  }

  .company-info {
    grid-template-columns: 1fr;
    padding: 1.5rem;
    gap: 1rem;
  }

  .input-group label {
    font-size: 1.1rem;
    letter-spacing: 1px;
  }

  .input-group input {
    font-size: 1rem;
    padding: 10px 12px;
  }

  #questions-container {
    padding: 1.5rem;
  }

  .question {
    padding: 1rem;
  }

  .question label {
    font-size: 1rem;
    margin-bottom: 0.8rem;
  }

  #questions-container h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
  }

  #questions-container h3 {
    font-size: 1.4rem;
    padding-left: 0.5rem;
    margin: 1rem 0 0.8rem 0;
  }

  #submit-btn {
    margin: 1.5rem;
    width: calc(100% - 3rem);
    padding: 1rem;
    font-size: 1rem;
  }

  .warnings-section {
    padding: 1.5rem;
    margin: 1.5rem;
  }

  .warnings-section h2 {
    font-size: 1.4rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 5px;
  }

  .header-nav {
    padding: 0.8rem;
  }

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

  .nav-link {
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
  }

  .questions-counter {
    font-size: 0.75rem;
    margin-top: 1rem;
    letter-spacing: 0.2px;
  }

  .company-info {
    padding: 1rem;
  }

  .input-group label {
    font-size: 1rem;
    letter-spacing: 0.5px;
  }

  .input-group input {
    font-size: 0.9rem;
    padding: 8px 10px;
  }

  #questions-container {
    padding: 1rem;
  }

  .question {
    padding: 0.8rem;
  }

  .question label {
    font-size: 0.9rem;
    line-height: 1.4;
  }

  .question input[type='checkbox'] {
    width: 16px;
    height: 16px;
    margin-right: 10px;
  }

  .question input[type='text'] {
    font-size: 0.9rem;
    padding: 8px 10px;
  }

  #questions-container h2 {
    font-size: 1.5rem;
  }

  #questions-container h3 {
    font-size: 1.2rem;
  }

  #submit-btn {
    margin: 1rem;
    width: calc(100% - 2rem);
    padding: 0.9rem;
    font-size: 0.9rem;
  }

  .warnings-section {
    padding: 1rem;
    margin: 1rem;
  }

  .warnings-list li {
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
  }

  #success-message {
    margin: 1rem;
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 360px) {
  .header-nav h1 {
    font-size: 1.3rem;
  }

  .nav-link {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  .questions-counter {
    font-size: 0.7rem;
    margin-top: 1rem;
  }

  .input-group label {
    font-size: 0.9rem;
  }

  .question label {
    font-size: 0.85rem;
  }

  #questions-container h2 {
    font-size: 1.3rem;
  }

  #questions-container h3 {
    font-size: 1.1rem;
  }
}

/* ------------------------------------------------------ анимации */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.question {
  animation: fadeInUp 0.3s ease-out;
}

/* ------------------------------------------------------ скроллбар */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #5a67d8, #6b46c1);
}

/* ---------------------------------------------------------- валид форм инпут */

.validation-hint {
  font-size: 12px;
  margin-top: 4px;
  padding: 6px 8px;
  border-radius: 4px;
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  color: #6c757d;
  opacity: 0;
  transform: translateY(-5px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.validation-hint.visible {
  opacity: 1;
  transform: translateY(0);
}

.validation-hint.error {
  background: #f8d7da;
  border-color: #f5c6cb;
  color: #721c24;
}

.validation-hint.success {
  background: #d4edda;
  border-color: #c3e6cb;
  color: #155724;
}

input.valid {
  border-color: #28a745 !important;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

input.invalid {
  border-color: #dc3545 !important;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

input.invalid:focus {
  outline: none;
}

/* ---------------------------------------------------------- уведомления  */

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 24px;
  border-radius: 6px;
  color: white;
  font-weight: 500;
  z-index: 1000;
  transform: translateX(400px);
  opacity: 0;
  transition: all 0.3s ease;
}

.notification--show {
  transform: translateX(0);
  opacity: 1;
}

.notification--hide {
  transform: translateX(400px);
  opacity: 0;
}

.notification--success {
  background: #10b981;
}
.notification--error {
  background: #ef4444;
}
.notification--warning {
  background: #f59e0b;
}
.notification--info {
  background: #3b82f6;
}

.auth-warning--highlighted {
  animation: pulse 0.5s ease-in-out 3;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: #f3f4f6;
  border-radius: 6px;
  font-size: 14px;
}

.btn--small {
  padding: 4px 8px;
  font-size: 12px;
}

.error {
  border-color: #ef4444 !important;
  background-color: #fef2f2;
}

.error:focus {
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}