/**
 * Сфера Облако (Sfera Cloud) — Компонентная таблица стилей
 * Проект: yan84 Stealth Site
 * Чистый CSS3, нулевые внешние зависимости (Zero External CDN)
 */

/* ==========================================================================
   1. Кнопки (Buttons)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.75rem 1.375rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4338ca 0%, #0284c7 100%);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-focus);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: #334155;
  color: #ffffff;
}

.btn-sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.9375rem 1.875rem;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

/* ==========================================================================
   2. Бейджи и Статусные Индикаторы
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-tech {
  background: rgba(79, 70, 229, 0.15);
  border: 1px solid rgba(79, 70, 229, 0.35);
  color: #a5b4fc;
}

.badge-cyan {
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.3);
  color: #38bdf8;
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--status-emerald);
}

.status-indicator-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--status-emerald);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--status-emerald);
  position: relative;
  flex-shrink: 0;
}

.status-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background-color: var(--status-emerald);
  opacity: 0.4;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(0.95); opacity: 0; }
}

/* ==========================================================================
   3. Карточки Продуктов и Технологий
   ========================================================================== */
.card-tech {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card-tech:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-glow);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.12);
  border: 1px solid rgba(79, 70, 229, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}

.card-tech h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card-tech p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--accent-cyan);
}

.card-link:hover {
  color: #7dd3fc;
  gap: 0.625rem;
}

/* ==========================================================================
   4. Телеметрическое Окно Кластера (Hero Telemetry Window)
   ========================================================================== */
.telemetry-window {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-card-glow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.telemetry-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border-subtle);
}

.telemetry-dots {
  display: flex;
  gap: 6px;
}

.telemetry-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.telemetry-title {
  font-family: ui-monospace, monospace;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.telemetry-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.telemetry-item {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.telemetry-metric-val {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.telemetry-metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.telemetry-terminal {
  background: rgba(9, 13, 22, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8125rem;
  color: #38bdf8;
  line-height: 1.5;
  overflow-x: auto;
  max-width: 100%;
  box-sizing: border-box;
}

.telemetry-terminal-line {
  display: flex;
  gap: 0.5rem;
}

.telemetry-prompt {
  color: var(--status-emerald);
  user-select: none;
}

/* ==========================================================================
   5. Интерактивный Калькулятор Стоимости (Calculator)
   ========================================================================== */
.calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

.calc-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 992px) {
  .calc-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.calc-sliders {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.calc-slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.calc-value-badge {
  font-family: ui-monospace, monospace;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(14, 165, 233, 0.25);
}

.calc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  outline: none;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(14, 165, 233, 0.6);
  transition: transform var(--transition-fast);
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(14, 165, 233, 0.6);
}

.calc-period-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  margin-top: 1rem;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  user-select: none;
}

.calc-summary-box {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: center;
}

.calc-summary-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.calc-price-display {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.calc-period-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.calc-includes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: left;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
}

.calc-includes-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.calc-includes-list li svg {
  color: var(--status-emerald);
  flex-shrink: 0;
}

/* ==========================================================================
   6. Форма Заявки (Demo / Contact Form)
   ========================================================================== */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background: rgba(30, 41, 59, 0.9);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  cursor: pointer;
}

.form-checkbox-label input[type="checkbox"] {
  margin-top: 0.2rem;
  cursor: pointer;
  accent-color: var(--accent-indigo);
}

/* ==========================================================================
   7. Модальное Окно Успеха (Success Modal)
   ========================================================================== */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.is-active {
  display: flex;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg), var(--shadow-card-glow);
  position: relative;
}

.modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--status-emerald);
  margin-bottom: 1.25rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.modal-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

/* ==========================================================================
   8. Партнеры и Стандарты Доверия (Trust Bar)
   ========================================================================== */
.trust-bar {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 3rem 0;
  background: rgba(15, 23, 42, 0.4);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 1024px) {
  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  padding: 1rem;
}

.trust-item-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.trust-item-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   9. Таблицы Данных и SLA (Data Tables)
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.data-table th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 1rem 1.25rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-light);
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ==========================================================================
   10. Документы (Legal Documents)
   ========================================================================== */
.legal-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem 1.5rem;
}

.legal-article h1 {
  font-size: clamp(2rem, 3.5vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.legal-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.legal-section {
  margin-bottom: 2.25rem;
}

.legal-section h2 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.875rem;
}

.legal-section p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.legal-section ul {
  list-style: disc;
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.legal-section li {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   11. Адаптивные Сетки Hero и Архитектуры (Responsive Grids)
   ========================================================================== */
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.tier3-grid,
.architecture-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .tier3-grid,
  .architecture-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    width: 100%;
  }
  .tier3-grid,
  .architecture-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    width: 100%;
  }
  .site-header .header-actions .status-indicator-badge {
    display: none;
  }
  .site-header .header-actions .btn-primary,
  .site-header .header-actions .header-cta,
  .header-cta {
    display: none;
  }
  .mobile-drawer .header-actions .btn-primary,
  .mobile-drawer .header-cta {
    display: inline-flex;
  }
}

@media (max-width: 480px) {
  .telemetry-grid {
    grid-template-columns: 1fr;
  }
  .telemetry-body {
    padding: 1rem;
  }
}