:root {
  --bg: #0b0a10;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e2e2e8;
  --text-muted: #8a8a9a;
  --accent: #a78bfa;
  --accent-2: #60a5fa;
  --accent-glow: rgba(167, 139, 250, 0.25);
  --error: #f87171;
  --success: #34d399;
  --radius: 14px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
}

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

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Фоновые свечения */
.bg-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
  top: -10%;
  left: -10%;
  animation: float 10s ease-in-out infinite;
}

.bg-glow--secondary {
  background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
  top: auto;
  bottom: -10%;
  left: auto;
  right: -10%;
  animation-delay: -5s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, 40px); }
}

/* Контейнер */
.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 560px;
  padding: 24px;
}

.container--small {
  max-width: 420px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 48px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero__badge {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}

.hero__note {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-style: italic;
}

.hero__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero__footer {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Карточка */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.card__header {
  text-align: center;
  padding: 32px 24px 16px;
}

.card__title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.card__subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.card__footer {
  text-align: center;
  padding: 16px 24px 24px;
  font-size: 0.9rem;
}

/* Табы */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
}

.tab {
  flex: 1;
  padding: 14px 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: color var(--transition);
  font-family: inherit;
}

.tab:hover {
  color: var(--text);
}

.tab--active {
  color: var(--text);
}

.tab--active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

/* Панели табов */
.tab-panel {
  display: none;
  padding: 24px;
  animation: fadeSlide 0.3s ease;
}

.tab-panel--active {
  display: block;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Формы */
.form__group {
  margin-bottom: 16px;
}

.form__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form__input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input::placeholder {
  color: rgba(138, 138, 154, 0.5);
}

.form__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form__hint {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.form__text {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-align: center;
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 6px 28px rgba(167, 139, 250, 0.45);
}

.btn--secondary {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--border);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn--block {
  width: 100%;
}

/* Ссылки */
.link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity var(--transition);
}

.link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.text-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Анимации */
.fade-in {
  animation: fadeIn 0.8s ease both;
}

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

/* Переключатель языка */
.lang-switcher {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10;
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  backdrop-filter: blur(10px);
}

.lang-btn {
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-muted);
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn--active {
  color: var(--text);
  background: rgba(167, 139, 250, 0.15);
}

/* Адаптив */
@media (max-width: 480px) {
  .hero {
    padding: 32px 20px;
  }
  .hero__title {
    font-size: 2rem;
  }
  .hero__actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .tabs {
    padding: 0;
  }
  .tab {
    font-size: 0.8rem;
    padding: 12px 4px;
  }
}