/* ==========================================================================
   bla-bla.tech — Anti-AI Production Stylesheet
   Строгая типографика, матовые поверхности, физические микро-интеракции.
   ========================================================================== */

/* 1. Layout & Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: 80px;
  padding-bottom: 80px;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background-color: var(--color-mint-soft);
  border: 1px solid var(--color-mint-border);
  border-radius: var(--radius-pill);
  color: var(--color-mint-light);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.25rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* 2. Tactile Button Mechanics (Physical 1px Press Depression) */
.btn-tactile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  box-shadow: var(--shadow-sm), var(--shadow-inset-top);
  transition: background-color var(--transition-snappy),
    border-color var(--transition-snappy),
    box-shadow var(--transition-snappy),
    transform var(--transition-snappy),
    color var(--transition-snappy);
}

.btn-tactile:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-inset-top);
}

.btn-tactile:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-tactile:focus-visible {
  outline: 2px solid var(--color-mint);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-mint);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #0b1a15;
  font-weight: 700;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-mint-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: #ffffff;
  font-weight: 600;
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-strong);
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
  box-shadow: none;
}

.btn-lg {
  padding: 14px 24px;
  font-size: 1.0625rem;
  border-radius: var(--radius-md);
}

/* 3. Site Header & Navbar */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height, 64px);
  background-color: rgba(20, 21, 24, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.site-header.scrolled {
  background-color: rgba(20, 21, 24, 0.96);
  border-bottom-color: var(--border-default);
  box-shadow: var(--shadow-md);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1875rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
}

.brand-accent {
  color: var(--color-mint);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 550;
  color: var(--text-normal);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-snappy), background-color var(--transition-snappy);
}

.nav-link:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-link:active {
  background-color: rgba(255, 255, 255, 0.14);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 40px;
  padding: 8px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 4px;
  color: var(--text-secondary);
  transition: all var(--transition-snappy);
}

.lang-btn.active {
  background-color: var(--bg-surface-elevated);
  color: #ffffff;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.lang-btn:hover:not(.active) {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

/* Burger Mobile Button */
.burger-btn {
  display: none;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: background-color var(--transition-snappy);
}

.burger-btn:hover {
  background-color: var(--bg-surface-hover);
}

.mobile-nav-drawer {
  display: none;
}

/* 4. Hero Section */
.hero-section {
  padding-top: calc(var(--header-height, 64px) + 66px);
  padding-bottom: 70px;
  text-align: center;
}

.hero-content {
  max-width: 820px;
  margin: 0 auto 40px auto;
}

.hero-title {
  font-size: 3.125rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--color-mint);
}

.hero-subtitle {
  font-size: 1.1875rem;
  line-height: 1.6;
  color: var(--text-normal);
  max-width: 720px;
  margin: 0 auto 32px auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-normal);
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.trust-item svg {
  color: var(--color-mint);
}

/* 4.1 Promo Image Slider (16:9 Aspect Ratio) */
.hero-slider-wrapper {
  max-width: 1040px;
  margin: 0 auto;
  padding: 10px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 20px 40px rgba(0, 0, 0, 0.45);
}

.hero-slider-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--bg-surface-sunken);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  user-select: none;
  outline: none;
}

.hero-slider-container:focus-visible {
  box-shadow: 0 0 0 2px var(--color-mint);
}

.slider-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.slider-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--bg-surface-sunken);
}

.slider-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-pill);
  background-color: rgba(26, 28, 33, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background-color var(--transition-snappy), border-color var(--transition-snappy), transform var(--transition-snappy), color var(--transition-snappy);
  opacity: 0.85;
}

.slider-btn:hover {
  background-color: rgba(38, 41, 48, 0.95);
  border-color: var(--border-default);
  color: var(--color-mint);
  opacity: 1;
}

.slider-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.slider-btn-prev {
  left: 14px;
}

.slider-btn-next {
  right: 14px;
}

.slider-controls-bar {
  position: absolute;
  bottom: 14px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 10;
  pointer-events: none;
}

.slider-dots {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background-color: rgba(20, 21, 24, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  pointer-events: auto;
}

.slider-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background-color: var(--text-secondary);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Физическая невидимая область нажатия для соблюдения стандарта WCAG/Lighthouse (>= 48px) */
.slider-dot::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  transform: translate(-50%, -50%);
}

.slider-dot:hover {
  background-color: var(--text-primary);
}

.slider-dot.active {
  width: 24px;
  background-color: var(--color-mint);
  box-shadow: 0 0 10px rgba(56, 178, 145, 0.5);
}

.slider-counter {
  position: absolute;
  right: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-normal);
  padding: 4px 10px;
  background-color: rgba(20, 21, 24, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  pointer-events: auto;
}

.empty-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
}

.empty-slide-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.empty-slide-content code {
  font-family: monospace;
  color: var(--color-mint);
  background-color: var(--bg-surface);
  padding: 2px 6px;
  border-radius: 4px;
}

.slide-fallback-msg {
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 20px;
  text-align: center;
}

/* 5. Features Grid ("Все в одном") */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-snappy), transform var(--transition-snappy);
}

.feature-box:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
}

.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.feature-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-mint);
}

.feature-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  background-color: var(--bg-surface-elevated);
  color: var(--color-slate-blue);
  letter-spacing: 0.02em;
}

.feature-title {
  font-size: 1.25rem;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.015em;
}

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

/* 6. Teacher Benefits Section */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.benefit-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color var(--transition-snappy);
}

.benefit-item:hover {
  border-color: var(--border-default);
}

.benefit-icon {
  color: var(--color-mint);
  margin-bottom: 14px;
}

.benefit-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.benefit-desc {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

/* 7. Tariffs & Pricing Component */
.tariffs-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.tariff-toggle-group {
  display: inline-flex;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 4px;
}

.tariff-toggle-tab {
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
  color: var(--text-secondary);
  transition: all var(--transition-snappy);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tariff-toggle-tab:hover:not(.active) {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.06);
}

.tariff-toggle-tab.active {
  background-color: var(--bg-surface-elevated);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.discount-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  background-color: var(--color-coral);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 4px;
}

.tariffs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

@media (min-width: 993px) {
  .tariffs-grid.tariffs-grid-2 {
    grid-template-columns: repeat(2, minmax(320px, 460px));
    justify-content: center;
  }
}

.tariff-card {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-snappy), box-shadow var(--transition-snappy);
}

.tariff-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.tariff-card-popular {
  border-color: var(--color-mint);
  background-color: #212429;
}

.tariff-badge-popular {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-mint);
  color: #0b1a15;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(56, 178, 145, 0.35);
}

.tariff-card-header {
  margin-bottom: 20px;
}

.tariff-name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.tariff-desc {
  font-size: 0.84375rem;
  color: var(--text-secondary);
  min-height: 38px;
}

.tariff-price-block {
  margin-bottom: 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.tariff-price {
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.price-period {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.tariff-trial-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-mint);
  background-color: var(--color-mint-soft);
  padding: 3px 8px;
  border-radius: 4px;
}

.tariff-limits {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.limit-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84375rem;
  font-weight: 500;
  color: var(--text-normal);
}

.limit-chip svg {
  color: var(--color-slate-blue);
  flex-shrink: 0;
}

.tariff-onpremise-box {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--color-mint);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 16px;
  font-size: 0.8125rem;
  line-height: 1.45;
}

.onpremise-box-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--color-mint);
  margin-bottom: 4px;
}

.onpremise-box-header svg {
  color: var(--color-mint);
  flex-shrink: 0;
}

.onpremise-box-text {
  color: var(--text-normal);
  margin: 0;
}

.tariff-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin-bottom: 20px;
}

.tariff-features-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.tariff-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.84375rem;
  line-height: 1.4;
}

.feat-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.feat-icon-check {
  color: var(--color-mint);
}

.feat-icon-cross {
  color: var(--text-muted);
}

.feat-enabled {
  color: var(--text-normal);
}

.feat-disabled {
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(255, 255, 255, 0.15);
}

.tariff-cta-btn {
  width: 100%;
}

/* 8. FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-snappy);
}

.faq-item.active {
  border-color: var(--border-strong);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.faq-arrow {
  color: var(--text-secondary);
  transition: transform var(--transition-snappy);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--color-mint);
}

.faq-content {
  display: none;
  padding: 0 24px 20px 24px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-normal);
}

.faq-item.active .faq-content {
  display: block;
}

/* 9. Footer & Legal Documents */
.site-footer {
  background-color: #0f1012;
  border-top: 1px solid var(--border-subtle);
  padding-top: 64px;
  padding-bottom: 40px;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  display: inline-block;
  padding: 4px 0;
  color: var(--text-secondary);
  transition: color var(--transition-snappy);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.payment-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-secondary);
}

.payment-badge-chip {
  padding: 4px 8px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* 10. Legal Document Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 860px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  min-width: 0;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.modal-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: background-color var(--transition-snappy), color var(--transition-snappy);
}

.modal-close-btn:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.modal-body {
  padding: 28px;
  overflow-y: auto;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-normal);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface-sunken);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   11. Comprehensive Responsive Media Queries
   (Ultra-wide, Laptops, Tablets, Small Tablets, Mobile down to 320px)
   ========================================================================== */

/* 11.1 Ultra-wide Desktops (>= 1440px) */
@media (min-width: 1440px) {
  .hero-section {
    padding-top: calc(var(--header-height, 64px) + 80px);
    padding-bottom: 90px;
  }

  .hero-title {
    font-size: 3.5rem;
  }
}

/* 11.2 Standard Laptops & Landscape Tablets (993px - 1180px) */
@media (min-width: 993px) and (max-width: 1180px) {
  .main-nav {
    gap: 4px;
  }

  .nav-link {
    font-size: 0.875rem;
    padding: 6px 10px;
  }

  .header-actions {
    gap: 8px;
  }

  .header-actions .btn-secondary {
    padding: 8px 14px;
    font-size: 0.875rem;
  }
}

/* 11.3 Tablets (Portrait & Landscape: <= 992px) */
@media (max-width: 992px) {
  .site-header {
    height: var(--header-height, 60px);
  }

  .main-nav {
    display: none;
  }

  .burger-btn {
    display: flex;
  }

  .mobile-nav-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height, 60px);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-main);
    z-index: 999;
    padding: 28px 24px;
    gap: 18px;
    overflow-y: auto;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
  }

  .mobile-nav-drawer.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav-drawer a {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-nav-drawer a:hover {
    color: var(--color-mint);
  }

  /* Hero Section on Tablets */
  .hero-section {
    padding-top: calc(var(--header-height, 60px) + 40px);
    padding-bottom: 50px;
  }

  .hero-title {
    font-size: 2.5rem;
    line-height: 1.18;
  }

  .hero-subtitle {
    font-size: 1.125rem;
    max-width: 620px;
  }

  .hero-slider-wrapper {
    max-width: 760px;
    padding: 8px;
    border-radius: var(--radius-lg);
  }

  /* Grid Layouts on Tablets */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .feature-box {
    padding: 24px;
  }

  .feature-title {
    font-size: 1.1875rem;
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .benefit-item {
    padding: 20px;
  }

  /* Tariffs on Tablets: 2 columns with centered 3rd card */
  .tariffs-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 780px;
    margin: 0 auto;
  }

  .tariffs-grid>.tariff-card:nth-child(3) {
    grid-column: span 2;
    max-width: 480px;
    width: 100%;
    justify-self: center;
  }

  .tariffs-grid.tariffs-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .tariffs-grid.tariffs-grid-2>.tariff-card:nth-child(2) {
    grid-column: auto;
  }

  /* Footer on Tablets */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* 11.4 Small Tablets & Phablets (<= 768px) */
@media (max-width: 768px) {
  .hero-section {
    padding-top: calc(var(--header-height, 60px) + 32px);
    padding-bottom: 40px;
  }

  .hero-title {
    font-size: 2.125rem;
  }

  .hero-subtitle {
    font-size: 1.0625rem;
  }

  .hero-slider-wrapper {
    padding: 6px;
    border-radius: var(--radius-lg);
  }

  .slider-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
  }

  .slider-btn-prev {
    left: 8px;
  }

  .slider-btn-next {
    right: 8px;
  }

  .slider-counter {
    display: none;
  }

  .section-title {
    font-size: 1.875rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 540px;
    margin: 0 auto;
    gap: 16px;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
    max-width: 540px;
    margin: 0 auto;
    gap: 16px;
  }

  .tariffs-grid,
  .tariffs-grid.tariffs-grid-2 {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin: 0 auto;
    gap: 20px;
  }

  .tariffs-grid>.tariff-card:nth-child(3),
  .tariffs-grid.tariffs-grid-2>.tariff-card:nth-child(2) {
    grid-column: auto;
    max-width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-top: 24px;
  }

  .modal-window {
    max-width: 95vw;
  }

  .modal-footer {
    flex-wrap: wrap;
    gap: 12px;
  }
}

/* 11.5 Standard Smartphones (<= 480px) */
@media (max-width: 480px) {
  .site-header {
    height: var(--header-height, 56px);
  }

  .header-actions {
    gap: 8px;
  }

  .header-actions .lang-switcher {
    display: none;
  }

  .header-actions .btn-secondary {
    padding: 6px 12px;
    font-size: 0.8125rem;
    min-height: 36px;
  }

  .burger-btn {
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
  }

  .brand-logo img {
    width: 32px;
    height: 32px;
  }

  .brand-logo span {
    font-size: 1.0625rem;
  }

  /* Mobile Drawer on Smartphones */
  .mobile-nav-drawer {
    top: var(--header-height, 56px);
    padding: 20px 16px;
    gap: 14px;
  }

  .mobile-drawer-lang {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 4px;
  }

  .mobile-nav-drawer a {
    font-size: 1.0625rem;
    padding: 6px 0;
  }

  /* Hero on Smartphones */


  .hero-content {
    margin-bottom: 24px;
  }

  .hero-badge {
    font-size: 0.6875rem;
    padding: 3px 10px;
  }

  .hero-title {
    font-size: 1.75rem;
    line-height: 1.22;
    word-break: break-word;
    letter-spacing: -0.025em;
  }

  .hero-subtitle {
    font-size: 0.9375rem;
    line-height: 1.5;
    margin-bottom: 20px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 10px;
    margin-bottom: 20px;
  }

  .hero-cta-group .btn-tactile {
    width: 100%;
    white-space: normal;
    text-align: center;
    padding: 12px 16px;
    font-size: 0.9375rem;
  }

  .hero-trust-bar {
    gap: 8px 14px;
    font-size: 0.8125rem;
    justify-content: center;
  }

  /* Slider on Smartphones */
  .hero-slider-wrapper {
    padding: 4px;
    border-radius: var(--radius-md);
  }

  .hero-slider-container {
    border-radius: var(--radius-sm);
  }

  .slider-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
  }

  .slider-btn-prev {
    left: 4px;
  }

  .slider-btn-next {
    right: 4px;
  }

  .slider-dots {
    padding: 6px 10px;
    gap: 8px;
  }



  .section-header {
    margin-bottom: 24px;
  }

  .section-badge {
    font-size: 0.6875rem;
    padding: 3px 10px;
    margin-bottom: 10px;
  }

  .section-title {
    font-size: 1.5rem;
    line-height: 1.25;
    margin-bottom: 12px;
  }

  .section-subtitle {
    font-size: 0.9375rem;
    line-height: 1.5;
  }

  .feature-box {
    padding: 20px 16px;
    border-radius: var(--radius-md);
  }

  .feature-title {
    font-size: 1.125rem;
  }

  .benefit-item {
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }

  /* Tariffs on Smartphones */
  .tariffs-controls {
    gap: 10px;
    margin-bottom: 20px;
    width: 100%;
  }

  .tariff-toggle-group {
    width: 100%;
    display: flex;
    padding: 2px;
  }

  .tariff-toggle-tab {
    flex: 1 1 0;
    padding: 7px 6px;
    font-size: 0.78125rem;
    justify-content: center;
    text-align: center;
  }

  .discount-badge {
    font-size: 0.625rem;
    padding: 1px 4px;
  }

  .tariff-card {
    padding: 22px 16px;
    border-radius: var(--radius-md);
  }

  .tariff-name {
    font-size: 1.1875rem;
  }

  .price-val {
    font-size: 1.75rem;
  }

  .tariff-onpremise-box {
    padding: 8px 10px;
    font-size: 0.75rem;
  }

  .tariff-feat-item {
    font-size: 0.8125rem;
  }

  /* FAQ */
  .faq-trigger {
    padding: 14px 16px;
    font-size: 0.9375rem;
  }

  .faq-content {
    padding: 0 16px 16px 16px;
    font-size: 0.875rem;
    line-height: 1.55;
  }

  /* Footer */
  .site-footer {
    padding-top: 40px;
    padding-bottom: 24px;
  }

  .footer-grid {
    gap: 22px;
    margin-bottom: 28px;
  }

  .payment-badges {
    flex-wrap: wrap;
    gap: 8px;
  }

  .payment-badge-chip {
    font-size: 0.625rem;
    padding: 3px 6px;
  }

  /* Legal Modal on Mobile */
  .modal-overlay {
    padding: 8px;
  }

  .modal-window {
    border-radius: var(--radius-md);
    max-height: 94vh;
    max-width: 100%;
    width: 100%;
  }

  .modal-header {
    padding: 10px 12px;
    gap: 8px;
  }

  .modal-title {
    font-size: 0.9375rem;
    line-height: 1.3;
    min-width: 0;
  }

  .modal-actions {
    flex-shrink: 0;
  }

  .modal-actions #legal-modal-print span[data-i18n="modal_print"] {
    display: none;
  }

  .modal-actions #legal-modal-print {
    padding: 8px;
    min-width: 36px;
    min-height: 36px;
    justify-content: center;
  }

  .modal-close-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
  }

  .modal-body {
    padding: 12px;
    font-size: 0.8125rem;
    line-height: 1.5;
  }

  .modal-footer {
    padding: 10px 12px;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
    text-align: center;
  }

  .modal-footer a {
    text-align: center;
    justify-content: center;
    white-space: normal;
    font-size: 0.8125rem;
    padding: 8px 12px;
  }

  .modal-footer div {
    font-size: 0.75rem;
    line-height: 1.4;
  }

  .hero-section {
    padding-top: 78px !important;
    padding-bottom: 32px;
  }
}

/* 11.6 Ultra-compact Smartphones down to 320px (<= 360px) */
@media (max-width: 360px) {
  .hero-title {
    font-size: 1.5rem;
    letter-spacing: -0.02em;
  }

  .hero-subtitle {
    font-size: 0.875rem;
  }

  .tariff-toggle-tab {
    font-size: 0.71875rem;
    padding: 6px 2px;
  }

  .tariff-name {
    font-size: 1.125rem;
  }

  .price-val {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 1.375rem;
  }

  .brand-logo span {
    font-size: 1rem;
  }

  .brand-logo img {
    width: 28px;
    height: 28px;
  }

  .header-actions .btn-secondary {
    padding: 5px 8px;
    font-size: 0.75rem;
  }

  .trust-item {
    font-size: 0.75rem;
  }

  .modal-title {
    font-size: 0.875rem;
  }

  .modal-header {
    padding: 8px 10px;
  }

  .modal-body {
    padding: 10px;
    font-size: 0.78125rem;
  }
}