@import url('https://fonts.googleapis.com/css2?family=Russo+One&family=Golos+Text:wght@400;500;600;700&display=swap');

:root {
  --crimson: #8E1414;
  --crimson-deep: #6B0E0E;
  --wine: #3D0606;
  --wine-ink: #240404;
  --cream: #F2E7DD;
  --cream-dim: #D9C7BB;
  --ink: #1C0A0A;
  --ink-soft: #4A3434;
  --signal: #FF4B3E;
}

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

html, body {
  width: 100%;
  min-height: 100vh;
  font-family: 'Golos Text', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--wine-ink);
  color: var(--cream);
  overflow-x: hidden;
}

/* === ФОН: глубокий красный + линейная структура документа === */
.background-animated {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0px,
      transparent calc(100% / 6 - 1px),
      rgba(242, 231, 221, 0.045) calc(100% / 6 - 1px),
      rgba(242, 231, 221, 0.045) calc(100% / 6)
    ),
    linear-gradient(160deg, var(--crimson) 0%, var(--crimson-deep) 55%, var(--wine) 100%);
}

/* Тонкая рамка документа по периметру вьюпорта */
.background-animated::after {
  content: '';
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(242, 231, 221, 0.18);
  pointer-events: none;
}

/* === КОНТЕЙНЕР === */
.container {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100vh;
  min-height: 100dvh;
  padding: clamp(1.5rem, 6vw, 4rem);
  position: relative;
}

/* Вертикальная строка-якорь по правому краю */
.container::before {
  content: 'ЦИФРОВАЯ ИДЕНТИЧНОСТЬ';
  position: absolute;
  right: clamp(0.5rem, 2vw, 2rem);
  top: 50%;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-family: 'Russo One', sans-serif;
  font-size: clamp(0.625rem, 1.4vw, 0.75rem);
  letter-spacing: 0.55em;
  color: rgba(242, 231, 221, 0.28);
  white-space: nowrap;
}

/* === HERO === */
.hero {
  max-width: 900px;
  animation: fadeIn 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Индексная метка документа */
.hero-index {
  font-family: 'Golos Text', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cream-dim);
  margin-bottom: clamp(1rem, 3vw, 2rem);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-index::after {
  content: '';
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: rgba(242, 231, 221, 0.25);
}

.logo {
  font-family: 'Russo One', sans-serif;
  font-size: clamp(4.5rem, 16vw, 11rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.01em;
  color: var(--cream);
  margin-left: -0.04em; /* оптическая компенсация */
  margin-bottom: clamp(0.75rem, 2vw, 1.25rem);
}

.tagline {
  font-size: clamp(1rem, 2.6vw, 1.375rem);
  font-weight: 400;
  color: var(--cream-dim);
  max-width: 34ch;
  line-height: 1.45;
  margin-bottom: clamp(2.5rem, 7vw, 4.5rem);
}

/* === КНОПКА ВХОДА: кремовая на красном === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  background: var(--cream);
  color: var(--ink);
  border: none;
  padding: 1.125rem 2rem;
  border-radius: 4px;
  font-family: 'Golos Text', sans-serif;
  font-size: clamp(0.9375rem, 2vw, 1.0625rem);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: #FFFFFF;
}

.btn-primary:active {
  transform: scale(0.985);
}

.btn-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Дополнительная строка под кнопкой */
.btn-note {
  margin-top: 1.25rem;
  font-size: 0.8125rem;
  color: var(--cream-dim);
  opacity: 0.75;
}

/* === МОДАЛЬНОЕ ОКНО: документ на красном === */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(36, 4, 4, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: none;
  align-items: flex-end;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.25s ease;
}

@media (min-width: 560px) {
  .modal {
    align-items: center;
    padding: 1.5rem;
  }
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--cream);
  color: var(--ink);
  width: 100%;
  max-width: 460px;
  border-radius: 12px 12px 0 0;
  padding: 1.75rem 1.5rem calc(1.75rem + env(safe-area-inset-bottom));
  position: relative;
  animation: slideUp 0.4s cubic-bezier(0.32, 0.72, 0, 1);
  max-height: 90vh;
  max-height: 90dvh;
  overflow-y: auto;
}

@media (min-width: 560px) {
  .modal-content {
    border-radius: 12px;
    padding: 2rem;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Шапка документа — линейка как в бланке */
.modal-header-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-family: 'Russo One', sans-serif;
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--ink);
}

.modal-form-number {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
}

.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.875rem;
  background: none;
  border: none;
  color: var(--ink-soft);
  font-size: 1.75rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem;
  transition: color 0.15s;
}

.modal-close:hover {
  color: var(--crimson);
}

/* === МЕТОДЫ ВХОДА: строки документа, не карточки === */
.auth-method {
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(28, 10, 10, 0.12);
}

.auth-method:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.auth-method-header {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: flex-start;
}

.auth-icon {
  width: 1.375rem;
  height: 1.375rem;
  flex-shrink: 0;
  color: var(--crimson);
  margin-top: 0.125rem;
}

.auth-method-header h3 {
  font-family: 'Golos Text', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--ink);
}

.auth-method-header p {
  font-size: 0.8125rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

/* Кнопки документа */
.btn-secondary {
  width: 100%;
  background: var(--crimson);
  color: var(--cream);
  border: none;
  padding: 0.875rem 1.5rem;
  border-radius: 4px;
  font-family: 'Golos Text', sans-serif;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-secondary:hover:not(:disabled) {
  background: var(--crimson-deep);
}

.btn-secondary:active:not(:disabled) {
  transform: scale(0.99);
}

.btn-secondary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Разделитель */
.divider {
  display: flex;
  align-items: center;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
  padding: 0.25rem 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(28, 10, 10, 0.15);
}

.divider span {
  padding: 0 1rem;
  letter-spacing: 0.1em;
}

/* === ОТОБРАЖЕНИЕ КОДА === */
.code-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  border: 1.5px solid var(--ink);
  padding: 1.25rem 1rem;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.4);
}

.code-value {
  font-family: 'Russo One', sans-serif;
  font-size: clamp(2rem, 9vw, 2.5rem);
  letter-spacing: 0.3em;
  margin-left: 0.3em; /* оптическая компенсация letter-spacing */
  color: var(--ink);
  user-select: all;
  -webkit-user-select: all;
}

.code-status {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.code-status.waiting {
  color: var(--crimson);
}

.code-status.success {
  color: #1D7A3E;
}

.code-status.error {
  color: var(--signal);
}

.code-instruction {
  font-size: 0.8125rem;
  color: var(--ink-soft);
  text-align: center;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.code-instruction code {
  display: inline-block;
  margin-top: 0.375rem;
  background: var(--ink);
  padding: 0.375rem 0.875rem;
  font-family: 'Russo One', monospace;
  font-size: 0.9375rem;
  letter-spacing: 0.12em;
  color: var(--cream);
  user-select: all;
  -webkit-user-select: all;
}

/* Сообщение об ошибке */
.error-message {
  border: 1.5px solid var(--signal);
  color: var(--signal);
  padding: 0.875rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-top: 1.25rem;
  background: rgba(255, 75, 62, 0.07);
}

/* Лоадер в кнопке */
.btn-loader {
  display: inline-block;
  width: 0.9375rem;
  height: 0.9375rem;
  border: 2px solid rgba(242, 231, 221, 0.35);
  border-top-color: var(--cream);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Сниженная анимация */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Фокус для клавиатуры */
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.modal-close:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}