@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;700;800&display=swap');

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

:root {
  --bg-primary: #050508;
  --bg-card: rgba(10, 10, 14, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --accent: rgba(255, 255, 255, 0.9);
  --glow-color: rgba(255, 255, 255, 0.1);
}

html {
  scroll-behavior: smooth;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

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

/* ===== TUNNEL ===== */
.tunnel-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}



/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: linear-gradient(180deg, rgba(5, 5, 8, 0.95) 0%, rgba(5, 5, 8, 0.7) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.header__logo {
  position: relative;
  z-index: 2;
  width: 116px;
  height: 44px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.header__logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(1.2);
  transition: filter 0.3s, transform 0.3s;
}

.header__logo-img:hover {
  filter: brightness(1.5) drop-shadow(0 0 10px rgba(255,255,255,0.3));
  transform: scale(1.03);
}

.header__nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header__link {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 8px 16px;
  transition: color 0.3s, text-shadow 0.3s;
}

.header__link:hover {
  color: var(--text-primary);
  text-shadow: 0 0 20px rgba(255,255,255,0.3);
}

.header__sep {
  color: rgba(255,255,255,0.2);
  font-weight: 300;
  user-select: none;
}

.header__cta {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border: 1px solid var(--border-glow);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
  transition: all 0.3s;
  cursor: pointer;
}

.header__cta:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 0 20px rgba(255,255,255,0.05), inset 0 0 20px rgba(255,255,255,0.03);
}

.header__tg-icon {
  width: 18px;
  height: 18px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 120px 20px 60px;
  text-align: center;
  background: transparent;
}

.hero__logo-wrapper {
  position: relative;
  margin-bottom: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.hero__logo {
  width: 380px;
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 0 30px rgba(255,255,255,0.15));
  animation: floatLogo 6s ease-in-out infinite;
}

.hero__logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulseLogoGlow 4s ease-in-out infinite alternate;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulseLogoGlow {
  0% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

.hero__title {
  font-family: 'Orbitron', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: clamp(22px, 3.5vw, 38px);
  font-weight: 800;
  letter-spacing: 3px;
  line-height: 1.35;
  text-transform: uppercase;
  margin-bottom: 40px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 0 40px rgba(255,255,255,0.1);
  max-width: 700px;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border: 1.5px solid var(--border-glow);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
  cursor: pointer;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.hero__cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.hero__cta:hover {
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.08);
  box-shadow:
    0 0 30px rgba(255,255,255,0.08),
    inset 0 0 30px rgba(255,255,255,0.03);
  transform: translateY(-2px);
}

.hero__cta:hover::before {
  opacity: 1;
}

.hero__cta svg {
  width: 16px;
  height: 16px;
}

/* ===== FEATURES ===== */
.features {
  position: relative;
  z-index: 1;
  padding: 20px 40px 60px;
  text-align: center;
}

.features__title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.4s;
  cursor: pointer;
  position: relative;
  overflow: visible;
  min-height: 220px;
  outline: none;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.feature-card:hover {
  border-color: var(--border-glow);
  background: rgba(20, 20, 35, 0.9);
  transform: translateY(-4px);
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(255,255,255,0.02);
}

.feature-card:focus-visible {
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 0 0 2px rgba(255,255,255,0.18), 0 10px 40px rgba(0, 0, 0, 0.4);
}

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

.feature-card__icon {
  width: 56px;
  height: 56px;
  color: rgba(255,255,255,0.7);
  transition: color 0.3s, filter 0.3s;
}

.feature-card:hover .feature-card__icon {
  color: rgba(255,255,255,0.95);
  filter: drop-shadow(0 0 8px rgba(255,255,255,0.2));
}

.feature-card__icon svg {
  width: 100%;
  height: 100%;
}

.feature-card__title {
  font-family: 'Orbitron', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.35;
  color: var(--text-primary);
  text-align: center;
  min-height: 48px;
}

.feature-card__hint {
  font-family: 'Orbitron', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.feature-card__tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 14px);
  transform: translateX(-50%) translateY(8px);
  width: min(360px, 88vw);
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 10px;
  background: rgba(6, 8, 15, 0.96);
  color: rgba(255,255,255,0.92);
  font-size: 12.5px;
  line-height: 1.5;
  text-align: left;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.48), 0 0 22px rgba(255,255,255,0.08);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  z-index: 30;
}

.feature-card__tooltip::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  border-width: 8px 8px 0;
  border-style: solid;
  border-color: rgba(255,255,255,0.22) transparent transparent transparent;
}

.feature-card__tooltip::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%) translateY(-1px);
  border-width: 7px 7px 0;
  border-style: solid;
  border-color: rgba(6, 8, 15, 0.96) transparent transparent transparent;
  z-index: 1;
}

.feature-card:hover .feature-card__tooltip,
.feature-card:focus-visible .feature-card__tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== HOW TO START ===== */
.start-section {
  position: relative;
  z-index: 1;
  padding: 30px 40px 70px;
  text-align: center;
}

.start-section__title {
  font-family: 'Orbitron', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 20px;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.start-section__subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 34px;
}

.start-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.start-card {
  background: rgba(10, 10, 14, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px 16px 16px;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.start-card--link {
  text-decoration: none;
  color: inherit;
}
.start-card:hover {
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 10px 26px rgba(0,0,0,0.35), 0 0 16px rgba(255,255,255,0.06);
  transform: translateY(-2px);
}

.start-card__logo {
  width: 100%;
  max-width: 210px;
  height: 100px;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 0 10px rgba(255,255,255,0.08));
}

.start-card__logo--unipro {
  max-width: 250px;
  height: 112px;
}

.start-card__name {
  margin-top: 10px;
  font-family: 'Orbitron', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-secondary);
}

/* ===== SEPARATOR ===== */
.separator {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  padding: 30px 0 40px;
}

.separator svg {
  width: 40px;
  height: 20px;
  animation: bounceArrow 2s ease-in-out infinite;
}

@keyframes bounceArrow {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 0.8; }
}

/* ===== FOOTER ===== */
.footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  padding: 24px 40px;
  border-top: 1px solid var(--border-color);
  background: rgba(5, 5, 8, 0.85);
}

.footer__copy {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-secondary);
  max-width: 34%;
}

.footer__cta {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  border: 1.5px solid var(--border-glow);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
  transition: all 0.3s;
  cursor: pointer;
}

.footer__cta:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.35);
  box-shadow: 0 0 25px rgba(255,255,255,0.06);
}

.footer__tg {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-secondary);
  transition: color 0.3s;
  max-width: 34%;
  text-align: right;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header,
  .hero,
  .features,
  .start-section,
  .footer {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .header {
    padding: 12px 20px;
  }

  .header__logo {
    width: 92px;
    height: 36px;
  }

  .header__nav {
    display: none;
  }

  .header__cta {
    padding: 8px 16px;
    font-size: 11px;
  }

  .hero {
    padding: 100px 20px 40px;
  }

  .hero__logo {
    width: 190px;
  }

  .hero__title {
    font-size: 20px;
    letter-spacing: 1.5px;
  }

  .features {
    padding: 20px 20px 40px;
  }

  .features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .feature-card {
    min-height: 210px;
  }

  .feature-card__tooltip {
    width: min(300px, calc(100vw - 32px));
    font-size: 12px;
    left: 0;
    right: auto;
    transform: translateY(8px);
  }

  .feature-card__tooltip::after,
  .feature-card__tooltip::before {
    left: 24px;
    transform: none;
  }

  .feature-card:nth-child(even) .feature-card__tooltip {
    left: auto;
    right: 0;
  }

  .feature-card:nth-child(even) .feature-card__tooltip::after,
  .feature-card:nth-child(even) .feature-card__tooltip::before {
    left: auto;
    right: 24px;
  }

  .feature-card:hover .feature-card__tooltip,
  .feature-card:focus-visible .feature-card__tooltip {
    transform: translateY(0);
  }

  .start-section {
    padding: 24px 20px 46px;
  }

  .start-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .start-card {
    min-height: 170px;
    padding: 14px 12px;
  }

  .start-card__logo {
    height: 78px;
  }

  .start-card__logo--unipro {
    max-width: 220px;
    height: 88px;
  }

  .footer {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    text-align: center;
    min-height: auto;
  }

  .footer__cta {
    position: static;
    transform: none;
  }

  .footer__copy,
  .footer__tg {
    max-width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__logo {
    width: 150px;
  }

  .hero__title {
    font-size: 17px;
    letter-spacing: 1px;
  }

  .hero__cta {
    padding: 12px 24px;
    font-size: 13px;
  }

  .feature-card {
    padding: 20px 12px;
  }

  .feature-card__icon {
    width: 44px;
    height: 44px;
  }

  .feature-card__title {
    font-size: 11px;
    min-height: 42px;
  }

  .feature-card__hint {
    font-size: 10px;
  }

  .feature-card__tooltip {
    width: min(260px, calc(100vw - 24px));
  }

  .start-grid {
    grid-template-columns: 1fr;
  }

  .start-section__subtitle {
    font-size: 13px;
  }
}

/* ===== SCROLL ANIMATIONS ===== */
.feature-card,
.features__title {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.feature-card.visible,
.features__title.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }
.feature-card:nth-child(4) { transition-delay: 0.3s; }