/* ==========================================================================
   Монитера — базовая дизайн-система публичного сайта
   Чистый CSS, без фреймворков и сборщиков. Токены → примитивы → блоки → утилиты.
   ========================================================================== */

/* ---------- 1. Токены ---------- */
:root {
  --c-canvas: #08090a;
  --c-canvas-2: #0b0d0f;
  --c-surface-1: #0e1012;
  --c-surface-2: #14171a;
  --c-surface-3: #191d21;
  --c-line: rgba(255, 255, 255, 0.07);
  --c-line-strong: rgba(255, 255, 255, 0.14);
  --c-ink: #f2f4f5;
  --c-ink-2: #a2a9b0;
  --c-ink-3: #6c737b;
  --c-accent: #c8f560;
  --c-accent-ink: #0b0f05;
  --c-accent-soft: rgba(200, 245, 96, 0.1);
  --c-iris: #7c8cff;
  --c-up: #3ddc97;
  --c-degraded: #ffb454;
  --c-down: #ff5d5d;
  --c-info: #5aa9ff;
  --c-maint: #9b8cff;
  --c-up-soft: rgba(61, 220, 151, 0.12);
  --c-degraded-soft: rgba(255, 180, 84, 0.13);
  --c-down-soft: rgba(255, 93, 93, 0.13);
  --c-info-soft: rgba(90, 169, 255, 0.12);
  --c-neutral-soft: rgba(255, 255, 255, 0.06);

  --r-sm: 8px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
  --r-2xl: 28px;

  --font-sans: "Inter", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Inter Tight", "Inter", "Segoe UI Variable", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", Consolas, monospace;

  --shadow-2: 0 8px 24px -8px rgba(0, 0, 0, 0.6);
  --shadow-3: 0 24px 64px -24px rgba(0, 0, 0, 0.7);

  --container: 1320px;
  --gutter: 24px;

  color-scheme: dark;
}

/* Светлая тема: подключается классом .theme-light на <html> */
.theme-light {
  --c-canvas: #f7f7f3;
  --c-canvas-2: #f2f2ec;
  --c-surface-1: #ffffff;
  --c-surface-2: #f1f1eb;
  --c-surface-3: #e9e8e0;
  --c-line: #e4e3db;
  --c-line-strong: #cfcec4;
  --c-ink: #0e1012;
  --c-ink-2: #565d66;
  --c-ink-3: #8a9098;
  --c-accent: #5b7a00;
  --c-accent-ink: #f7fff0;
  --c-accent-soft: #eef7d6;
  --c-iris: #4756d8;
  --c-up-soft: #e7f7ee;
  --c-degraded-soft: #fdf1de;
  --c-down-soft: #fdeaea;
  --c-info-soft: #e8f1fe;
  --c-neutral-soft: #f0efe9;
  --shadow-2: 0 8px 24px -12px rgba(16, 24, 40, 0.18);
  color-scheme: light;
}

/* ---------- 2. Сброс и база ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--c-canvas);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

::selection {
  background: var(--c-accent);
  color: var(--c-accent-ink);
}

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--c-accent);
  color: var(--c-accent-ink);
  border-radius: var(--r-md);
  font-weight: 600;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 3. Типографика ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-wrap: balance;
}

h1 {
  font-size: clamp(34px, 4.6vw, 60px);
  letter-spacing: -0.035em;
  line-height: 1.04;
}

h2 {
  font-size: clamp(26px, 2.6vw, 34px);
  letter-spacing: -0.025em;
}

h3 {
  font-size: 17px;
  letter-spacing: -0.01em;
}

p {
  text-wrap: pretty;
}

.lead {
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--c-ink-2);
}

.muted {
  color: var(--c-ink-2);
}

.dim {
  color: var(--c-ink-3);
}

.small {
  font-size: 13px;
}

.tiny {
  font-size: 11.5px;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.tnum {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.overline {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--c-ink-3);
}

/* ---------- 4. Раскладка ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: 80px;
}

.section-sm {
  padding-block: 56px;
}

.section-alt {
  background: var(--c-canvas-2);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.stack > * + * {
  margin-top: 14px;
}

.row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.grid-2 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- 5. Компоненты ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding-inline: 22px;
  border-radius: var(--r-md);
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: filter 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-accent-ink);
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  border: 1px solid var(--c-line-strong);
  color: var(--c-ink);
  background: color-mix(in oklab, var(--c-ink) 4%, transparent);
}

.btn-ghost:hover {
  background: color-mix(in oklab, var(--c-ink) 8%, transparent);
}

.btn-outline {
  border: 1px solid var(--c-line-strong);
  color: var(--c-ink);
}

.btn-outline:hover {
  background: color-mix(in oklab, var(--c-ink) 4%, transparent);
}

.btn-sm {
  height: 34px;
  padding-inline: 14px;
  font-size: 12.5px;
  border-radius: var(--r-sm);
}

.btn-lg {
  height: 52px;
  padding-inline: 26px;
  font-size: 15px;
}

.card {
  background: var(--c-surface-1);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  padding: 20px;
}

.card-hover {
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card-hover:hover {
  border-color: var(--c-line-strong);
  transform: translateY(-2px);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding-inline: 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
}

.pill-up {
  background: var(--c-up-soft);
  color: var(--c-up);
}

.pill-warn {
  background: var(--c-degraded-soft);
  color: var(--c-degraded);
}

.pill-down {
  background: var(--c-down-soft);
  color: var(--c-down);
}

.pill-info {
  background: var(--c-info-soft);
  color: var(--c-info);
}

.pill-neutral {
  background: var(--c-neutral-soft);
  color: var(--c-ink-2);
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding-inline: 9px;
  border-radius: 7px;
  background: var(--c-neutral-soft);
  color: var(--c-ink-2);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}

.badge-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--c-ink-2);
  background: color-mix(in oklab, var(--c-ink) 3%, transparent);
}

.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  border: 1px solid var(--c-line-strong);
  border-radius: 5px;
  color: var(--c-ink-2);
}

/* ---------- 6. Формы ---------- */
.field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 8px 8px 16px;
  background: color-mix(in oklab, var(--c-ink) 3.5%, transparent);
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-lg);
}

.field-prefix {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-ink-3);
  padding-right: 10px;
  border-right: 1px solid var(--c-line);
}

.field input {
  flex: 1;
  height: 42px;
  min-width: 0;
  background: none;
  border: 0;
  font-size: 15px;
  color: var(--c-ink);
  outline: none;
}

.field input::placeholder {
  color: var(--c-ink-3);
}

/* ---------- 7. Хедер и футер ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in oklab, var(--c-canvas) 84%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo__mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--c-accent), #8fd14a);
  color: var(--c-accent-ink);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: var(--c-ink-2);
}

.nav a:hover {
  color: var(--c-ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  padding: 8px;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-sm);
  color: var(--c-ink-2);
}

@media (max-width: 1080px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 20px;
    background: var(--c-canvas-2);
    border-bottom: 1px solid var(--c-line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--c-line);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-actions .btn {
    display: none;
  }
}

.site-footer {
  background: var(--c-canvas-2);
  border-top: 1px solid var(--c-line);
  padding-block: 56px 28px;
}

.footer-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: 1.2fr repeat(4, 1fr);
}

@media (max-width: 1000px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--c-ink-3);
}

.footer-col ul {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.footer-col a {
  font-size: 13px;
  color: var(--c-ink-2);
}

.footer-col a:hover {
  color: var(--c-ink);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--c-line);
  font-size: 12px;
  color: var(--c-ink-3);
}

/* ---------- 8. Блоки маркетинга ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: 64px 40px;
}

.hero__glow {
  position: absolute;
  inset: -60px 0 auto 0;
  height: 760px;
  pointer-events: none;
  background:
    radial-gradient(46% 42% at 22% 8%, rgba(200, 245, 96, 0.13), transparent 62%),
    radial-gradient(44% 40% at 76% 4%, rgba(124, 140, 255, 0.16), transparent 64%);
  -webkit-mask-image: linear-gradient(#000 34%, transparent 88%);
  mask-image: linear-gradient(#000 34%, transparent 88%);
}

.hero__inner {
  position: relative;
  max-width: 880px;
  margin-inline: auto;
  text-align: center;
}

.hero__form {
  max-width: 620px;
  margin: 30px auto 12px;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 20px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--c-ink-3);
}

.logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 34px;
  margin-top: 38px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-ink-3);
  opacity: 0.72;
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
  margin-top: 56px;
}

.bento__health {
  grid-column: span 4;
  grid-row: span 2;
}

.bento__alert,
.bento__points,
.bento__channels,
.bento__reaction {
  grid-column: span 4;
}

.bento__cost {
  grid-column: span 12;
}

@media (max-width: 1000px) {
  .bento > * {
    grid-column: span 12 !important;
    grid-row: auto !important;
  }
}

.stat-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px 48px;
  padding-top: 44px;
  color: var(--c-ink-2);
  font-size: 13px;
}

.stat-strip b {
  display: block;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--c-ink);
}

.feature-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
}

@media (max-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  background: var(--c-accent-soft);
  color: var(--c-accent);
}

.feature h3 {
  margin-top: 16px;
}

.feature p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-ink-2);
}

.feature__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--c-accent);
}

.steps {
  display: grid;
  gap: 40px;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
}

@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.check-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.check-list li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--c-ink-2);
}

.check-list svg {
  flex: none;
  margin-top: 2px;
  color: var(--c-up);
}

.plan-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
}

@media (max-width: 900px) {
  .plan-grid {
    grid-template-columns: 1fr;
  }
}

.plan__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 8px;
}

.plan__price strong {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}

.plan__features {
  display: grid;
  gap: 10px;
  margin-top: 20px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--c-ink-2);
}

.plan__features li {
  display: flex;
  gap: 8px;
}

.plan__features svg {
  flex: none;
  margin-top: 3px;
  color: var(--c-up);
}

.faq {
  border-top: 1px solid var(--c-line);
}

.faq details {
  border-bottom: 1px solid var(--c-line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary svg {
  flex: none;
  color: var(--c-accent);
  transition: transform 0.2s ease;
}

.faq details[open] summary svg {
  transform: rotate(45deg);
}

.faq p {
  max-width: 720px;
  padding-bottom: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-ink-2);
}

.cta-band {
  position: relative;
  overflow: hidden;
  padding: 44px;
  text-align: center;
  border-radius: var(--r-xl);
  border: 1px solid var(--c-line);
  background: var(--c-surface-1);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(50% 120% at 50% 0%, rgba(200, 245, 96, 0.12), transparent 70%),
    radial-gradient(40% 100% at 80% 100%, rgba(124, 140, 255, 0.1), transparent 70%);
}

.cta-band > * {
  position: relative;
}

/* ---------- 9. Внутренние страницы ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  font-size: 12.5px;
  color: var(--c-ink-3);
}

.breadcrumbs a:hover {
  color: var(--c-ink);
}

.page-head {
  padding-block: 32px 28px;
  max-width: 820px;
}

.page-head h1 {
  font-size: clamp(30px, 3.6vw, 44px);
}

.page-head .lead {
  margin-top: 14px;
}

.prose {
  max-width: 760px;
}

.prose > * + * {
  margin-top: 16px;
}

.prose h2 {
  margin-top: 40px;
  font-size: 25px;
}

.prose h3 {
  margin-top: 28px;
  font-size: 18px;
}

.prose p,
.prose li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-ink-2);
}

.prose ul,
.prose ol {
  display: grid;
  gap: 8px;
  padding-left: 22px;
}

.prose ul li {
  list-style: disc;
}

.prose ol li {
  list-style: decimal;
}

.prose a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--c-surface-2);
}

.prose blockquote {
  padding: 14px 18px;
  border-left: 3px solid var(--c-accent);
  background: var(--c-surface-1);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: 14.5px;
  color: var(--c-ink-2);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: var(--c-surface-1);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-ink-3);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-line);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink-2);
  vertical-align: top;
}

tr:last-child td {
  border-bottom: 0;
}

td strong {
  color: var(--c-ink);
  font-weight: 600;
}

.aside-card {
  padding: 22px;
  border-radius: var(--r-lg);
  border: 1px solid color-mix(in oklab, var(--c-accent) 22%, transparent);
  background: linear-gradient(165deg, rgba(200, 245, 96, 0.08), rgba(124, 140, 255, 0.05));
}

.two-col {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: start;
}

@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

/* ---------- 10. Разное ---------- */
.divider {
  height: 1px;
  background: var(--c-line);
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .cta-band {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }
}

/* ---------- 11. Утилиты (минимальный набор) ---------- */
.u-mt-0 { margin-top: 0; }
.u-mt-8 { margin-top: 8px; }
.u-mt-12 { margin-top: 12px; }
.u-mt-16 { margin-top: 16px; }
.u-mt-24 { margin-top: 24px; }
.u-mt-32 { margin-top: 32px; }
.u-mt-40 { margin-top: 40px; }
.u-mb-16 { margin-bottom: 16px; }
.u-mb-24 { margin-bottom: 24px; }
.u-mw-640 { max-width: 640px; }
.u-mw-720 { max-width: 720px; }
.u-flex { display: flex; }
.u-between { justify-content: space-between; }
.u-wrap { flex-wrap: wrap; }
.u-gap-8 { gap: 8px; }
.u-gap-12 { gap: 12px; }
.u-gap-16 { gap: 16px; }
.u-center { text-align: center; }
.u-mx-auto { margin-inline: auto; }
.u-items-start { align-items: flex-start; }
.u-items-baseline { align-items: baseline; }
.u-grow { flex: 1; }
.u-nowrap { white-space: nowrap; }

/* Карточки тарифов: равная высота и кнопка внизу */
.plan-grid .card {
  display: flex;
  flex-direction: column;
}

.plan-grid .card > .btn {
  margin-top: auto;
}