:root {
  --color-bg: #0a0a0a;
  --color-surface: #141414;
  --color-primary: #3b82f6;
  --color-text: #ffffff;
  --color-text-dim: #a3a3a3;
  --color-border: #262626;
  --font-main: "Space Grotesk", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  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: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Typography Helpers */
h1,
h2,
h3 {
  text-transform: uppercase;
  font-weight: 700;
  line-height: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background-color: var(--color-primary);
  color: white;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0% 100%);
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.05);
  filter: brightness(1.2);
}

/* Header */
.header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -1px;
}

.header__menu {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.header__menu-link {
  color: var(--color-text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: var(--transition);
}

.header__menu-link:hover {
  color: var(--color-primary);
}

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

.header__burger span {
  width: 30px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Footer */
.footer {
  padding: 5rem 0 2rem;
  background-color: var(--color-surface);
  margin-top: 5rem;
  border-top: 4px solid var(--color-primary);
}

.footer__container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.footer__description {
  color: var(--color-text-dim);
  max-width: 300px;
}

.footer__title {
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.footer__list,
.footer__contact-list {
  list-style: none;
}

.footer__list li,
.footer__contact-list li {
  margin-bottom: 0.75rem;
}

.footer__list a {
  color: var(--color-text-dim);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer__contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-dim);
}

.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
  .footer__container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
  }
  .header__burger {
    display: flex;
  }
  .footer__container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Hero Section - Bento Grid */
.hero {
  padding: 4rem 0;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 1.5rem;
}

.bento-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero__box--title {
  grid-column: span 8;
  justify-content: center;
}

.hero__box--viz {
  grid-column: span 4;
  min-height: 300px;
  background: #000;
  padding: 0;
}

.hero__box--info {
  grid-column: span 4;
}

.hero__box--meta {
  grid-column: span 8;
  flex-direction: row;
  align-items: center;
  gap: 2rem;
}

/* Typography */
.hero__heading {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.9;
  margin: 1.5rem 0;
}

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

.hero__subheading {
  font-size: 1.25rem;
  color: var(--color-text-dim);
  max-width: 600px;
  margin-bottom: 2rem;
}

/* Decor Elements */
.bento-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 0.25rem 0.75rem;
  width: fit-content;
}

.bento-icon {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.hero__notice {
  display: block;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

/* Canvas & Animation */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.hero__stats {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  z-index: 2;
}

.stat-value {
  display: block;
  font-size: 3rem;
  font-weight: 700;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
}

.hero__link {
  margin-left: auto;
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.hero__link:hover {
  gap: 1rem;
  color: var(--color-primary);
}

/* Mobile Adjustments */
@media (max-width: 992px) {
  .hero__box--title,
  .hero__box--viz,
  .hero__box--info,
  .hero__box--meta {
    grid-column: span 12;
  }
  .hero__box--meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Courses Section */
.courses {
  padding: 8rem 0;
}

.section-header {
  margin-bottom: 3rem;
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 0.9rem;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-top: 0.5rem;
}

.text-accent {
  color: var(--color-primary);
}

.courses__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(280px, auto);
  gap: 1.5rem;
}

/* Featured Card */
.course-card--featured {
  grid-column: span 2;
  grid-row: span 2;
  flex-direction: row;
  padding: 0;
}

.course-card__content {
  flex: 1;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.course-card__image-box {
  flex: 1;
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--color-border);
}

.course-card__img {
  width: 80%;
  filter: grayscale(1) brightness(0.8);
  transition: var(--transition);
}

.course-card--featured:hover .course-card__img {
  filter: grayscale(0) brightness(1);
  transform: scale(1.05);
}

/* Small Cards */
.course-card {
  transition: var(--transition);
}

.course-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-5px);
}

.course-card__badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  margin-bottom: 1rem;
}

.course-card__title {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.course-card__text {
  color: var(--color-text-dim);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.course-card__list {
  list-style: none;
  margin-bottom: 2rem;
}

.course-card__list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.course-card__list i {
  color: var(--color-primary);
  width: 18px;
}

.course-card__link {
  margin-top: auto;
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.course-card__link:hover {
  color: var(--color-primary);
  gap: 0.8rem;
}

/* Responsive Courses */
@media (max-width: 1100px) {
  .courses__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .course-card--featured {
    grid-column: span 2;
    flex-direction: column;
  }
  .course-card__image-box {
    border-left: none;
    border-top: 1px solid var(--color-border);
    min-height: 200px;
  }
  .courses__grid {
    grid-template-columns: 1fr;
  }
  .course-card--featured {
    grid-column: span 1;
  }
}

/* Methodology Section */
.method {
  padding: 8rem 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 50px 50px; /* Эффект сетки чертежа */
}

.method__blueprint {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0; /* Убираем стандартные гэпы, чтобы соединить блоки линиями */
  border: 1px solid var(--color-border);
}

.method__step {
  border: 0.5px solid var(--color-border);
  padding: 4rem 3rem;
  background: rgba(10, 10, 10, 0.9); /* Полупрозрачный фон поверх сетки */
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 350px;
}

.method__num {
  position: absolute;
  top: 2rem;
  left: 2rem;
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-border);
  line-height: 1;
}

.method__label {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
  text-transform: uppercase;
}

.method__text {
  color: var(--color-text-dim);
  max-width: 320px;
}

/* Technical markers (pluses at corners) */
.method__plus {
  position: absolute;
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 1.2rem;
  line-height: 1;
  z-index: 5;
}

.method__plus--tl {
  top: -10px;
  left: -8px;
}
.method__plus--tr {
  top: -10px;
  right: -8px;
}
.method__plus--bl {
  bottom: -10px;
  left: -8px;
}
.method__plus--br {
  bottom: -10px;
  right: -8px;
}

/* Hover effects */
.method__step:hover {
  background: var(--color-surface);
}

.method__step:hover .method__num {
  -webkit-text-stroke: 1px var(--color-primary);
  transform: translateX(10px);
  transition: var(--transition);
}

/* Mobile */
@media (max-width: 768px) {
  .method__blueprint {
    grid-template-columns: 1fr;
  }
  .method__step {
    min-height: auto;
    padding: 5rem 2rem 3rem;
  }
}

/* Community Section */
.community {
  padding: 8rem 0;
}

.community__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 1.5rem;
}

.community__item {
  display: flex;
  flex-direction: column;
}

.community__item--quote {
  grid-column: span 2;
  padding: 4rem;
}

.community__item--status {
  background: var(--color-primary);
  color: white;
}

.community__item--status .system-code {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.7;
}

.community__item--stats {
  padding: 2.5rem;
  justify-content: space-between;
}

.community__item--cta {
  grid-column: span 2;
  background: #1a1a1a;
  border-style: dashed;
  justify-content: center;
  position: relative;
}

/* Quote Styles */
.item-meta {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 0.8rem;
  margin-bottom: 2rem;
}

.quote-text {
  font-size: 1.5rem;
  font-style: italic;
  margin-bottom: 2.5rem;
  line-height: 1.4;
}

.quote-author {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  filter: grayscale(1);
}

.author-name {
  display: block;
  font-weight: 700;
}

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

/* Status & Pulse */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  margin-bottom: 1rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #fff;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.5;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Stats */
.counter-num {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.plus-decoration {
  position: absolute;
  right: 2rem;
  bottom: 2rem;
  font-size: 4rem;
  color: var(--color-border);
  pointer-events: none;
}

/* Responsive */
@media (max-width: 992px) {
  .community__grid {
    grid-template-columns: 1fr 1fr;
  }
  .community__item--quote,
  .community__item--cta {
    grid-column: span 2;
  }
}

@media (max-width: 600px) {
  .community__grid {
    grid-template-columns: 1fr;
  }
  .community__item--quote,
  .community__item--cta {
    grid-column: span 1;
  }
}

/* FAQ Section */
.faq {
  padding: 8rem 0;
}

.faq__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 1.5rem;
  align-items: start;
}

.faq__intro {
  position: sticky;
  top: 120px;
  padding: 3rem;
}

.faq__description {
  color: var(--color-text-dim);
  margin: 1.5rem 0;
}

.faq__status-box {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.status-line {
  margin-bottom: 0.5rem;
}

.status-line span {
  color: var(--color-primary);
}

/* Accordion Items */
.faq__list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq__item {
  cursor: pointer;
  padding: 0; /* Управляем через внутренние элементы */
  transition: var(--transition);
}

.faq__question {
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.faq__num {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-weight: 700;
}

.faq__question h3 {
  font-size: 1.25rem;
  margin: 0;
  flex: 1;
  text-transform: none; /* FAQ читабельнее в обычном регистре */
}

.faq__icon {
  transition: transform 0.4s ease;
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  padding: 0 2rem 0 5rem;
}

.faq__item[data-status="open"] .faq__answer {
  max-height: 1000px;
  padding: 0 2rem 2rem 5rem;
  transition: max-height 0.4s cubic-bezier(1, 0, 1, 0);
}

.faq__item[data-status="open"] .faq__icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}

.faq__item:hover {
  border-color: var(--color-primary);
}

/* Mobile FAQ */
@media (max-width: 992px) {
  .faq__grid {
    grid-template-columns: 1fr;
  }
  .faq__intro {
    position: static;
  }
}

/* Contact Section */
.contact {
  padding: 8rem 0;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
}

.contact__meta {
  margin-top: 3rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

.meta-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.meta-label {
  color: var(--color-text-dim);
}

/* Form Styles */
.form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.form__input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1rem;
  color: white;
  font-family: var(--font-main);
  transition: var(--transition);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.form__error {
  color: #ef4444;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  display: none;
  margin-top: 0.5rem;
}

/* Captcha & Agreement */
/* Custom Checkbox Design */
.captcha-box,
.agreement-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 0.85rem;
  user-select: none;
  margin-bottom: 0.5rem;
}

.captcha-custom,
.agreement-custom {
  min-width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  background: var(--color-bg);
  position: relative;
  transition: var(--transition);
  margin-top: 2px;
}

.captcha-box input:checked + .captcha-custom,
.agreement-box input:checked + .agreement-custom {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.captcha-box input:checked + .captcha-custom::after,
.agreement-box input:checked + .agreement-custom::after {
  content: "✓";
  position: absolute;
  color: white;
  font-size: 14px;
  font-weight: bold;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.captcha-box input,
.agreement-box input {
  display: none; /* Скрываем стандартный, показываем кастомный */
}

.agreement-text {
  color: var(--color-text-dim);
}

/* Success State */
.form__success {
  display: none;
  text-align: center;
  padding: 4rem 2rem;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.success-icon {
  color: var(--color-primary);
  width: 64px;
  height: 64px;
}

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

/* Cookie Popup */
.cookie-popup {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 500px;
  z-index: 9999;
  display: none; /* Hidden by default */
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 1.5rem;
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-primary);
}

.cookie-popup__content {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.85rem;
}

.cookie-popup__content a {
  color: var(--color-primary);
}

/* Policy Pages Layout */
.pages {
  padding: 10rem 0 5rem;
  line-height: 1.8;
}

.pages h1 {
  font-size: 3rem;
  margin-bottom: 2rem;
  color: var(--color-primary);
}
.pages h2 {
  font-size: 1.8rem;
  margin: 2rem 0 1rem;
}
.pages p {
  color: var(--color-text-dim);
  margin-bottom: 1.5rem;
}
.pages ul {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}
.pages li {
  color: var(--color-text-dim);
  margin-bottom: 0.5rem;
}
.pages li strong {
  color: var(--color-text);
}
.pages a {
  color: var(--color-primary);
  text-decoration: none;
}