:root {
  --color-bg: #0a0a0b;
  --color-surface: #141416;
  --color-border: #2d2d30;
  --color-accent: #00ff41; /* Tech Green */
  --color-text: #e1e1e6;
  --color-text-dim: #88888c;
  --font-main: "JetBrains Mono", monospace;
  --font-heading: "Space Grotesk", sans-serif;
  --gap: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Header Styles --- */
.header {
  height: 80px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(10px);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

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

.header__logo-img {
  width: 32px;
  height: 32px;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
}

.header__menu {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.header__link {
  text-decoration: none;
  color: var(--color-text-dim);
  font-size: 0.9rem;
  transition: color 0.3s ease;
  text-transform: uppercase;
}

.header__link:hover {
  color: var(--color-accent);
}

.header__cta {
  text-decoration: none;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 8px 20px;
  font-weight: 500;
  border-radius: 2px;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.header__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 255, 65, 0.3);
}

.header__burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
}

.header__burger span {
  width: 24px;
  height: 2px;
  background: var(--color-accent);
}

/* --- Footer Styles --- */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--color-border);
  margin-top: 100px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer__desc {
  color: var(--color-text-dim);
  font-size: 0.9rem;
  max-width: 300px;
}

.footer__title {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.footer__list {
  list-style: none;
}

.footer__list li {
  margin-bottom: 12px;
}

.footer__list a {
  text-decoration: none;
  color: var(--color-text-dim);
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer__address {
  font-style: normal;
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 40px;
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.8rem;
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header__menu {
    display: none; /* Logic for burger in JS */
  }
  .header__burger {
    display: flex;
  }
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* --- Hero & Bento Grid --- */
.hero {
  padding: 40px 0;
}

.hero__bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: var(--gap);
}

.hero__block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 30px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero__block--main {
  grid-column: span 3;
  justify-content: center;
  min-height: 450px;
}

.hero__block--viz {
  grid-column: span 1;
  padding: 0;
  background: #000;
}

.hero__block--small {
  grid-column: span 2;
}

.hero__tag {
  font-size: 0.7rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 10px;
  width: fit-content;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 5rem); /* Гигантский заголовок */
  line-height: 1;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero__title span {
  color: transparent;
  -webkit-text-stroke: 1px var(--color-text);
}

.hero__subtitle {
  max-width: 500px;
  color: var(--color-text-dim);
  margin-bottom: 32px;
}

/* Кнопки */
.btn {
  display: inline-block;
  padding: 14px 28px;
  text-decoration: none;
  font-family: var(--font-main);
  font-weight: 500;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  margin-right: 15px;
}

.btn--secondary {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--primary:hover {
  transform: scale(1.05);
}

.hero__viz-overlay {
  position: absolute;
  bottom: 10px;
  left: 10px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.mono-label {
  font-size: 0.6rem;
  background: rgba(0, 255, 65, 0.1);
  color: var(--color-accent);
  padding: 2px 6px;
}

/* Адаптивность Bento */
@media (max-width: 992px) {
  .hero__bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero__block--main {
    grid-column: span 2;
  }
  .hero__block--viz {
    display: none;
  }
}

/* --- Section Header --- */
.section-header {
  margin-bottom: 40px;
}

.section-header__tag {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 2px;
}

.section-header__title {
  font-family: var(--font-heading);
  font-size: 3rem;
  text-transform: uppercase;
  margin-top: 10px;
}

/* --- Stack Grid --- */
.stack {
  padding: 100px 0;
}

.stack__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.stack__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 40px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
}

.stack__card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 255, 65, 0.05);
}

.stack__card--featured {
  grid-column: span 2;
}

.stack__card--wide {
  grid-column: span 3;
}

.stack__icon {
  color: var(--color-accent);
  width: 40px;
  height: 40px;
  margin-bottom: 24px;
}

.stack__card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.stack__card p {
  color: var(--color-text-dim);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.stack__labels {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: auto;
}

.label {
  background: rgba(45, 45, 48, 0.5);
  border: 1px solid var(--color-border);
  padding: 4px 12px;
  font-size: 0.7rem;
  border-radius: 100px;
  color: var(--color-text);
}

.stack__flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}

.stat-item {
  text-align: right;
}

.stat-value {
  display: block;
  font-size: 3rem;
  font-family: var(--font-heading);
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

/* Адаптивність Stack */
@media (max-width: 992px) {
  .stack__card--featured,
  .stack__card--wide {
    grid-column: span 3;
  }
}

@media (max-width: 768px) {
  .stack__grid {
    grid-template-columns: 1fr;
  }
  .stack__card {
    grid-column: span 1 !important;
  }
  .stack__flex {
    flex-direction: column;
    align-items: flex-start;
  }
  .stat-item {
    text-align: left;
  }
}

/* --- Tutorials (Editorial Style) --- */
.tutorials {
  padding: 100px 0;
  border-top: 1px solid var(--color-border);
}

.tutorials__list {
  margin-top: 60px;
}

.tutorials__item {
  display: flex;
  align-items: flex-start;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s ease;
  position: relative;
}

.tutorials__item:first-child {
  border-top: 1px solid var(--color-border);
}

.tutorials__num {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-accent);
  width: 100px;
  flex-shrink: 0;
}

.tutorials__content {
  flex-grow: 1;
  padding-right: 40px;
}

.tutorials__category {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--color-text-dim);
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}

.tutorials__item-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 16px;
  transition: color 0.3s ease;
}

.tutorials__item-text {
  color: var(--color-text-dim);
  max-width: 600px;
}

.tutorials__link {
  width: 60px;
  height: 60px;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.3s ease;
}

.tutorials__item:hover {
  background: rgba(255, 255, 255, 0.02);
  padding-left: 20px;
}

.tutorials__item:hover .tutorials__item-title {
  color: var(--color-accent);
}

.tutorials__item:hover .tutorials__link {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.tutorials__footer {
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tutorials__note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

/* Адаптив Tutorials */
@media (max-width: 768px) {
  .tutorials__item {
    flex-direction: column;
  }
  .tutorials__num {
    margin-bottom: 15px;
  }
  .tutorials__item-title {
    font-size: 1.5rem;
  }
  .tutorials__link {
    margin-top: 20px;
    align-self: flex-end;
  }
  .tutorials__footer {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

/* --- AI Logic Section --- */
.ai-logic {
  padding: 100px 0;
}

.ai-logic__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.ai-logic__block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 30px;
  display: flex;
  flex-direction: column;
}

.ai-logic__block--process {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--color-surface) 0%, #1a1a1d 100%);
}

.ai-logic__block h3 {
  font-family: var(--font-heading);
  margin: 20px 0 10px;
  text-transform: uppercase;
}

.ai-logic__block p {
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

/* Визуализация процесса */
.process-flow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.process-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-text-dim);
}

.process-node i {
  width: 32px;
  height: 32px;
}

.process-node--active {
  color: var(--color-accent);
  text-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

.process-arrow {
  height: 1px;
  flex-grow: 1;
  background: var(--color-border);
  margin: 0 15px;
  position: relative;
}

.process-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  transform: rotate(45deg);
}

/* UI Блок */
.test-ui {
  background: #000;
  padding: 15px;
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  margin-bottom: 20px;
}

.test-ui__header {
  color: var(--color-text-dim);
  border-bottom: 1px solid #333;
  padding-bottom: 5px;
  margin-bottom: 10px;
}

.test-ui__body code {
  display: block;
  margin-bottom: 4px;
}

.code--success {
  color: var(--color-accent);
}

.ai-logic__icon {
  color: var(--color-accent);
  width: 48px;
  height: 48px;
}

/* Адаптив */
@media (max-width: 992px) {
  .ai-logic__block--process {
    grid-column: span 3;
  }
  .ai-logic__block--test,
  .ai-logic__block--consult {
    grid-column: span 3;
  }
  .process-flow {
    flex-wrap: wrap;
    gap: 20px;
  }
  .process-arrow {
    display: none;
  }
}

/* --- Insights Section --- */
.insights {
  padding: 100px 0;
  background: linear-gradient(to bottom, var(--color-bg), #0f0f11);
}

.insights__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--gap);
}

.insights__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 24px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.insights__card--hero {
  grid-column: span 2;
  grid-row: span 2;
  flex-direction: row;
  padding: 0;
}

.insights__card--hero .insights__content {
  padding: 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.insights__card--hero h3 {
  font-size: 2.5rem;
  font-family: var(--font-heading);
  line-height: 1.1;
  margin: 20px 0;
  text-transform: uppercase;
}

.insights__visual {
  flex: 0.8;
  background: #000;
  position: relative;
  border-left: 1px solid var(--color-border);
}

.grid-pattern {
  width: 100%;
  height: 100%;
  background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.5;
}

.insights__status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-dim);
  margin-bottom: 16px;
  position: relative;
}

.insights__status--online {
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
}

.insights__card h4 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.insights__card p {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.insights__more {
  margin-top: auto;
  text-decoration: none;
  color: var(--color-accent);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 5px;
  text-transform: uppercase;
}

.insights__card--accent {
  background: rgba(0, 255, 65, 0.03);
  border-color: var(--color-accent);
}

.insights__meta {
  margin-top: auto;
  display: flex;
  gap: 20px;
  font-size: 0.7rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

/* Адаптив */
@media (max-width: 992px) {
  .insights__grid {
    grid-template-columns: 1fr;
  }
  .insights__card--hero {
    grid-column: span 1;
    flex-direction: column;
  }
  .insights__visual {
    height: 200px;
    border-left: none;
    border-top: 1px solid var(--color-border);
  }
}

/* --- Contact Section --- */
.contact {
  padding: 100px 0;
  border-top: 1px solid var(--color-border);
}

.contact__bento {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 60px;
  position: relative;
}

.contact__title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  line-height: 1;
  text-transform: uppercase;
  margin: 20px 0;
}

.contact__subtitle {
  color: var(--color-text-dim);
  margin-bottom: 30px;
  font-size: 1.1rem;
}

.contact__badges {
  display: flex;
  gap: 15px;
}

.badge {
  font-size: 0.65rem;
  border: 1px solid var(--color-border);
  padding: 5px 10px;
  color: var(--color-accent);
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.form-input {
  width: 100%;
  background: #000;
  border: 1px solid var(--color-border);
  padding: 15px;
  color: var(--color-text);
  font-family: var(--font-main);
  outline: none;
  transition: border-color 0.3s;
}

.form-input:focus {
  border-color: var(--color-accent);
}

.btn--full {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  border: none;
  font-size: 1rem;
}

/* Captcha & Policy Customization */
.form-captcha,
.form-policy {
  margin-bottom: 20px;
}

.captcha-checkbox,
.policy-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.captcha-checkbox input,
.policy-checkbox input {
  display: none;
}

.captcha-box {
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-border);
  position: relative;
}

.captcha-checkbox input:checked + .captcha-box::after {
  content: "✓";
  position: absolute;
  color: var(--color-accent);
  left: 4px;
  top: -2px;
}

.form-message {
  margin-top: 20px;
  font-size: 0.9rem;
  display: none;
  padding: 10px;
  border: 1px dashed;
}

.form-message--success {
  display: block;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Адаптив */
@media (max-width: 992px) {
  .contact__bento {
    grid-template-columns: 1fr;
    padding: 30px;
  }
}

.policy-box {
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
  position: relative;
  transition: all 0.2s;
}

.policy-checkbox input:checked + .policy-box {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.policy-checkbox input:checked + .policy-box::after {
  content: "✓";
  position: absolute;
  color: var(--color-bg);
  font-size: 12px;
  left: 3px;
  top: -1px;
}

.error-text {
  color: #ff4b4b;
  font-size: 0.7rem;
  display: none;
  margin-top: 5px;
}

.form-input.invalid {
  border-color: #ff4b4b;
}

/* --- Cookie Pop-up --- */
.cookie-popup {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-accent);
  padding: 20px;
  z-index: 2000;
  display: none;
  max-width: 500px;
}

.cookie-popup__content {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cookie-popup__icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

.cookie-popup__text {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.cookie-popup__text a {
  color: var(--color-accent);
}

/* --- Styles for Policy Pages (privacy.html, etc.) --- */
.pages {
  padding: 120px 0 80px;
}

.pages h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  margin-bottom: 40px;
  color: var(--color-accent);
  text-transform: uppercase;
}

.pages h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  margin: 40px 0 20px;
  text-transform: uppercase;
  border-left: 3px solid var(--color-accent);
  padding-left: 15px;
}

.pages p {
  margin-bottom: 20px;
  color: var(--color-text-dim);
  line-height: 1.8;
}

.pages ul {
  margin-bottom: 30px;
  list-style: none;
}

.pages li {
  margin-bottom: 12px;
  padding-left: 25px;
  position: relative;
  color: var(--color-text-dim);
}

.pages li::before {
  content: ">";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-main);
}

.pages strong {
  color: var(--color-text);
}

.pages a {
  color: var(--color-accent);
  text-decoration: none;
}