:root {
  --bg-color: #0d0d0d;
  --card-bg: #141414;
  --accent-color: #00f0ff;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --border-color: #262626;
  --font-main: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --gap: 20px;
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
  position: fixed;
  width: 100%;
  top: 0;
  background: rgba(13, 13, 13, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  text-transform: uppercase;
}

.logo__img {
  width: 32px;
  height: 32px;
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav__link {
  text-decoration: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: 0.3s;
}

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

.btn-contact {
  padding: 8px 16px;
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
}

/* Footer Styles */
.footer {
  padding: 80px 0 40px;
  background: #080808;
  border-top: 1px solid var(--border-color);
  margin-top: 100px;
}

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

.footer__title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--accent-color);
  margin-bottom: 20px;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: 0.3s;
}

.footer__links a:hover {
  color: var(--text-primary);
  padding-left: 5px;
}

.footer__bottom {
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Burger Menu */
.burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.burger span {
  width: 25px;
  height: 2px;
  background: var(--accent-color);
}

@media (max-width: 768px) {
  .nav {
    display: none; /* Add JS logic for mobile */
  }
  .burger {
    display: flex;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: 80px;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.6;
}

.hero__badge {
  font-family: var(--font-mono);
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  padding: 5px 15px;
  display: inline-block;
  margin-bottom: 20px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero__title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 25px;
  text-transform: uppercase;
}

.text-glow {
  color: var(--accent-color);
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.hero__subtitle {
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--text-secondary);
  font-size: 1.2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 32px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: none;
  transition: 0.3s;
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.9rem;
  margin: 0 10px;
}

.btn--primary {
  background: var(--accent-color);
  color: var(--bg-color);
  border: 1px solid var(--accent-color);
}

.btn--primary:hover {
  background: transparent;
  color: var(--accent-color);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}

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

.btn--secondary:hover {
  border-color: var(--accent-color);
}

/* Bento Grid */
.vision {
  padding: 100px 0;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 300px);
  gap: var(--gap);
}

.bento-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 40px;
  position: relative;
  transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.bento-item:hover {
  border-color: var(--accent-color);
  transform: translateY(-5px);
}

.bento-item--main {
  grid-column: span 2;
  grid-row: span 2;
  background: linear-gradient(45deg, #141414, #1a1a1a);
  justify-content: center;
}

.bento-item--accent {
  grid-column: span 2;
  background: var(--accent-color);
  color: var(--bg-color);
}

.bento-item--accent * {
  color: var(--bg-color);
}

.bento-item--dark {
  background: #000;
}

.bento-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-color);
  margin-bottom: 20px;
  display: block;
}

.bento-title {
  font-size: 2.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.bento-decor {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-mono);
  color: var(--border-color);
  font-size: 1.5rem;
}

@media (max-width: 992px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }
  .bento-item--main {
    grid-row: span 1;
  }
}

/* Section Headers */
.section-header {
  margin-bottom: 60px;
  border-left: 3px solid var(--accent-color);
  padding-left: 20px;
}

.section-number {
  font-family: var(--font-mono);
  color: var(--accent-color);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-size: 3rem;
  text-transform: uppercase;
  letter-spacing: -1px;
}

/* Tech Grid */
.tech {
  padding: 100px 0;
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 100px 100px; /* Сетка на фоне */
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-color); /* Линии между карточками */
  border: 1px solid var(--border-color);
}

.tech-card {
  background: var(--bg-color);
  padding: 60px 40px;
  position: relative;
  transition: 0.3s;
  overflow: hidden;
}

.tech-card:hover {
  background: #111;
}

.tech-card__icon {
  color: var(--accent-color);
  margin-bottom: 30px;
}

.tech-card__icon svg {
  width: 40px;
  height: 40px;
}

.tech-card__title {
  font-size: 1.5rem;
  margin-bottom: 20px;
  font-family: var(--font-mono);
}

.tech-card__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.tech-card__mark {
  position: absolute;
  top: 20px;
  right: 20px;
  color: var(--border-color);
  font-family: var(--font-mono);
}

.tech-card:hover .tech-card__mark {
  color: var(--accent-color);
}

/* Steps Section */
.steps {
  padding: 120px 0;
  background: var(--card-bg);
}

.steps-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.steps-info__title {
  font-size: 3.5rem;
  line-height: 1;
  margin-bottom: 30px;
}

.steps-info__text {
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.step-item {
  display: flex;
  gap: 30px;
  padding: 30px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  transition: 0.3s;
}

.step-item:hover {
  border-color: var(--accent-color);
  transform: translateX(10px);
}

.step-item__num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-color);
  font-weight: 700;
}

.step-item__content h4 {
  margin-bottom: 10px;
  font-size: 1.2rem;
  text-transform: uppercase;
}

.step-item__content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

@media (max-width: 992px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .steps-container {
    grid-template-columns: 1fr;
  }
  .steps-info__title {
    font-size: 2.5rem;
  }
}

/* FAQ Styles */
.faq {
  padding: 100px 0;
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border-color);
}
.faq-trigger {
  padding: 25px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  transition: 0.3s;
}
.faq-trigger:hover {
  color: var(--accent-color);
}
.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  color: var(--text-secondary);
}
.faq-item.active .faq-content {
  max-height: 200px;
  padding-bottom: 25px;
}
.faq-item.active .faq-trigger i {
  transform: rotate(45deg);
  color: var(--accent-color);
}

/* Contact Form Styles */
.contact-section {
  padding: 100px 0;
  background: #0a0a0a;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-form {
  background: var(--card-bg);
  padding: 40px;
  border: 1px solid var(--border-color);
}
.form-group {
  margin-bottom: 20px;
}
.form-input {
  width: 100%;
  padding: 15px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: white;
  font-family: var(--font-mono);
}
.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
}

/* Custom Checkbox */
.custom-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  margin-bottom: 15px;
}
.custom-checkbox input {
  display: none;
}
.checkmark {
  width: 20px;
  height: 20px;
  border: 1px solid var(--accent-color);
  flex-shrink: 0;
  position: relative;
}
.custom-checkbox input:checked + .checkmark::after {
  content: "+";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--accent-color);
  font-weight: bold;
}
.checkbox-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Cookie Popup */
.cookie-popup {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: var(--card-bg);
  border: 1px solid var(--accent-color);
  padding: 20px;
  display: none;
  z-index: 2000;
}
.btn--full {
  width: 100%;
}
.form-status {
  margin-top: 15px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: center;
}
.form-status.success {
  color: var(--accent-color);
}

/* Policy Pages Styles (Stage 5.2) */
.pages {
  padding: 120px 0;
}
.pages h1 {
  font-size: 3rem;
  margin-bottom: 40px;
  color: var(--accent-color);
}
.pages h2 {
  margin: 30px 0 15px;
}
.pages p {
  margin-bottom: 15px;
  color: var(--text-secondary);
}
.pages ul {
  margin-bottom: 20px;
  list-style: none;
}
.pages li {
  margin-bottom: 10px;
  border-left: 2px solid var(--accent-color);
  padding-left: 15px;
}
.pages a {
  color: var(--accent-color);
  text-decoration: none;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

.form-input-error {
  border-color: #ff4444 !important;
  animation: shake 0.2s ease-in-out 0s 2;
}

/* Добавим стиль для валидного состояния (опционально) */
.form-input:valid:not(:placeholder-shown) {
  border-color: var(--accent-color);
}