/* styles.css */

/* ===== VARIABLES ===== */
:root {
  /* Цветовая палитра - Глубокий Космос */
  --color-deep-space: #0A0A0A;
  --color-dark-slate: #1A1A1A;
  --color-graphite: #2D2D2D;
  --color-electric-lavender: #6C63FF;
  --color-electric-lavender-hover: #5A52E0;
  --color-electric-lavender-brighter: #AFAAFF;
  --color-white: #FFFFFF;
  --color-gray-light: #E5E7EB;
  --color-gray: #A3A3A3;
  --color-gray-dark: #404040;

  /* Типография */
  --font-primary: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;

  /* Размеры */
  --container-max-width: 1200px;
  --border-radius: 12px;
  --border-radius-small: 8px;
  --transition: all 0.3s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-deep-space);
  color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border: none;
  border-radius: var(--border-radius-small);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-electric-lavender) 0%, #8B85FF 100%);
  color: var(--color-white);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(108, 99, 255, 0.3);
}

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-graphite);
}

.btn--secondary:hover {
  border-color: var(--color-electric-lavender);
  background: rgba(108, 99, 255, 0.1);
}

.btn--large {
  padding: 16px 48px;
  font-size: 1.1rem;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-graphite);
  z-index: 1000;
  transition: var(--transition);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-white);
}

.logo__icon {
  margin-right: 8px;
  font-size: 1.8rem;
}

/* ===== NAVIGATION ===== */
.nav__list {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav__link {
  text-decoration: none;
  color: var(--color-gray-light);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-electric-lavender);
  transition: var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--accent {
  background: var(--color-electric-lavender);
  color: var(--color-white);
  padding: 10px 20px;
  border-radius: var(--border-radius-small);
}

.nav__link--accent:hover {
  background: var(--color-electric-lavender-hover);
  transform: translateY(-2px);
}

.nav__link--accent::after {
  display: none;
}

/* ===== BURGER MENU ===== */
.burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1000;
  transition: var(--transition);
}

.burger:hover .burger__line {
  background: var(--color-electric-lavender);
}

.burger__line {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 160px 0 100px;
  background: radial-gradient(ellipse at center top, rgba(108, 99, 255, 0.1) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="%231a1a1a" points="0,0 1000,0 1000,1000 0,1000"/><circle fill="%236C63FF" cx="200" cy="200" r="2" opacity="0.3"/><circle fill="%236C63FF" cx="600" cy="500" r="1" opacity="0.2"/><circle fill="%236C63FF" cx="800" cy="300" r="1.5" opacity="0.4"/><circle fill="%236C63FF" cx="300" cy="700" r="1" opacity="0.3"/><circle fill="%236C63FF" cx="900" cy="800" r="2" opacity="0.2"/></svg>');
  opacity: 0.3;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--color-electric-lavender) 0%, #8B85FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-gray-light);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-electric-lavender);
  margin-bottom: 0.5rem;
}

.stat__text {
  color: var(--color-gray);
  font-size: 0.9rem;
}

/* ===== SERVICES SECTION ===== */
.services {
  padding: 100px 0;
  background: var(--color-dark-slate);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--color-graphite);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-electric-lavender) 0%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-electric-lavender);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.service-card__description {
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}

.service-card__features {
  list-style: none;
}

.service-card__feature {
  color: var(--color-gray);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1rem;
}

.service-card__feature::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-electric-lavender);
}

/* ===== PROCESS SECTION ===== */
.process {
  padding: 100px 0;
  background: var(--color-deep-space);
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.process-step {
  text-align: center;
  padding: 2rem;
  position: relative;
}

.process-step__number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-electric-lavender);
  margin-bottom: 1rem;
  opacity: 0.3;
  font-family: var(--font-mono);
}

.process-step__title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.process-step__description {
  color: var(--color-gray-light);
}

/* ===== CASES SECTION ===== */
.cases {
  padding: 100px 0;
  background: var(--color-dark-slate);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-card {
  background: var(--color-graphite);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  display: block;
}

.case-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-electric-lavender);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.case-card__image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-electric-lavender) 0%, var(--color-graphite) 100%);
  position: relative;
  overflow: hidden;
}

.case-card__image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.3);
}

/* Модификаторы для изображений кейсов */
.case-card__image--referral {
  background: linear-gradient(135deg, #6C63FF 0%, #FF6B6B 100%);
}

.case-card__image--psychology {
  background: linear-gradient(135deg, #6C63FF 0%, #4ECDC4 100%);
}

.case-card__image--crypto {
  background: linear-gradient(135deg, #6C63FF 0%, #FFD93D 100%);
}

.case-card__image--gateway {
  background: linear-gradient(135deg, #6C63FF 0%, #6BCF7F 100%);
}

.case-card__image--gemini {
  background: linear-gradient(135deg, #6C63FF 0%, #4285F4 100%);
}

.case-card__image--events {
  background: linear-gradient(135deg, #6C63FF 0%, #FF8E53 100%);
}

.case-card__image--automl {
  background: linear-gradient(135deg, #6C63FF 0%, #9B59B6 100%);
}

.case-card__content {
  padding: 2rem;
}

.case-card__title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.case-card__description {
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}

.case-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.case-card__tag {
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-electric-lavender);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  border: 1px solid rgba(108, 99, 255, 0.3);
}

/* ===== COMPETENCIES SECTION ===== */
.competencies {
  padding: 100px 0;
  background: var(--color-deep-space);
}

.competencies__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.competency-card {
  background: var(--color-dark-slate);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  border: 1px solid transparent;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.competency-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-electric-lavender);
}

.competency-card__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: var(--color-graphite);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.competency-card__icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-electric-lavender) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.7;
}

.competency-card__icon--ai::after {
  content: '🤖';
}

.competency-card__icon--web::after {
  content: '🌐';
}

.competency-card__icon--mobile::after {
  content: '📱';
}

.competency-card__icon--cloud::after {
  content: '☁️';
}

.competency-card__title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.competency-card__description {
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}

.competency-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.competency-card__tech-item {
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-electric-lavender);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  border: 1px solid rgba(108, 99, 255, 0.3);
  font-family: var(--font-mono);
}

/* ===== CTA SECTION ===== */
.cta {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--color-dark-slate) 0%, var(--color-deep-space) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(108, 99, 255, 0.1) 0%, transparent 70%);
}

.cta__content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
}

.cta__content .btn {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 48px;
    border: none;
    border-radius: var(--border-radius-small);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.cta__content a.btn {
    /* Убираем стандартные стили ссылки */
    text-decoration: none;
    color: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    /* Наследуем стили кнопки */
    padding: 16px 48px;
    border-radius: var(--border-radius-small);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.cta__content a.btn--large {
    background: linear-gradient(135deg, var(--color-electric-lavender) 0%, #8B85FF 100%);
    color: var(--color-white);
    border: 2px solid transparent;
}

.cta__content a.btn--large:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(108, 99, 255, 0.3);
    background: linear-gradient(135deg, var(--color-electric-lavender-hover) 0%, #7A73FF 100%);
}

/* Фокус-стили для доступности */
.cta__content a.btn:focus-visible {
    outline: 2px solid var(--color-electric-lavender);
    outline-offset: 2px;
}

.cta__title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta__description {
  font-size: 1.25rem;
  color: var(--color-gray-light);
  margin-bottom: 2.5rem;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-dark-slate);
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-graphite);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer__section .logo {
  margin-bottom: 1rem;
  justify-content: flex-start;
}

.footer__description {
  color: var(--color-gray);
  line-height: 1.6;
}

.footer__title {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.75rem;
}

.footer__link {
  color: var(--color-gray);
  text-decoration: none;
  transition: var(--transition);
}

.footer__link:hover {
  color: var(--color-electric-lavender);
}

.footer__text {
  color: var(--color-gray);
}

.social {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.social__link {
  color: var(--color-gray);
  text-decoration: none;
  transition: var(--transition);
}

.social__link:hover {
  color: var(--color-electric-lavender);
}

.footer__bottom {
  border-top: 1px solid var(--color-graphite);
  padding-top: 2rem;
  text-align: center;
}

.footer__copyright {
  color: var(--color-gray);
  font-size: 0.9rem;
}

/* ===== BURGER MENU MOBILE STYLES ===== */
@media (max-width: 768px) {
  .burger {
      display: flex;
  }

  /* Навигация для мобильных */
  .nav {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      max-width: 400px;
      height: 100vh;
      background: var(--color-dark-slate);
      border-left: 1px solid var(--color-graphite);
      transition: right 0.3s ease;
      z-index: 999;
      padding: 100px 30px 30px;
      overflow-y: auto;
  }

  .nav.active {
      right: 0;
  }

  .nav__list {
      flex-direction: column;
      gap: 1.5rem;
      align-items: flex-start;
  }

  .nav__link {
      font-size: 1.1rem;
      padding: 12px 0;
      display: block;
      width: 100%;
      color: var(--color-white);
  }

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

  .nav__link--accent {
      margin-top: 2rem;
      text-align: center;
      width: 100%;
      padding: 15px 20px;
      font-size: 1.1rem;
  }

  /* Оверлей */
  .nav-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(10, 10, 10, 0.8);
      backdrop-filter: blur(5px);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      z-index: 998;
  }

  .nav-overlay.active {
      opacity: 1;
      visibility: visible;
  }

  /* Активное состояние бургера */
  .burger.active .burger__line:nth-child(1) {
      transform: rotate(45deg) translate(6px, 6px);
  }

  .burger.active .burger__line:nth-child(2) {
      opacity: 0;
  }

  .burger.active .burger__line:nth-child(3) {
      transform: rotate(-45deg) translate(6px, -6px);
  }

  /* Отключение скролла при открытом меню */
  body.no-scroll {
      overflow: hidden;
  }

  /* Анимации для появления пунктов меню */
  .nav__item {
      opacity: 0;
      transform: translateX(20px);
      transition: all 0.3s ease;
  }

  .nav.active .nav__item {
      opacity: 1;
      transform: translateX(0);
  }

  .nav.active .nav__item:nth-child(1) { transition-delay: 0.1s; }
  .nav.active .nav__item:nth-child(2) { transition-delay: 0.15s; }
  .nav.active .nav__item:nth-child(3) { transition-delay: 0.2s; }
  .nav.active .nav__item:nth-child(4) { transition-delay: 0.25s; }
  .nav.active .nav__item:nth-child(5) { transition-delay: 0.3s; }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .section-title {
      font-size: 2rem;
  }

  .hero__title {
      font-size: 2.5rem;
  }

  .hero__actions {
      flex-direction: column;
      align-items: center;
  }

  .btn {
      width: 100%;
      max-width: 300px;
  }

  .footer__content {
      grid-template-columns: 1fr;
      gap: 2rem;
  }

  .services__grid,
  .cases__grid,
  .competencies__grid {
      grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
      padding: 0 15px;
  }

  .hero__title {
      font-size: 2rem;
  }

  .hero__stats {
      gap: 1.5rem;
  }

  .stat__number {
      font-size: 2rem;
  }

  .service-card,
  .competency-card {
      padding: 1.5rem;
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
  }
}

/* Focus styles */
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-electric-lavender);
  outline-offset: 2px;
}

/* ===== UTILITY CLASSES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== COMPETENCIES JOIN BUTTON ===== */
.competencies__cta {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
}

.competencies__join-btn {
    display: inline-block;
    padding: 16px 40px;
    background: var(--color-electric-lavender);
    color: var(--color-white);
    text-decoration: none;
    border-radius: var(--border-radius-small);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

.competencies__join-btn:hover {
    background: var(--color-electric-lavender-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(108, 99, 255, 0.3);
}

.not-clickable {
    pointer-events: none;
    cursor: default;
    /* опционально - для визуального обозначения */
}