:root {
  --bg: #050505;
  --bg-alt: #0a0a0f;
  --text: #f5f5f5;
  --muted: #8a8a99;
  --accent: #8a6fff;
  --accent-2: #00f5ff;
  --border: rgba(255, 255, 255, 0.08);
  --glow: 0 0 30px rgba(138, 111, 255, 0.35);
  --transition: 280ms cubic-bezier(0.65, 0, 0.35, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    sans-serif;
  background: radial-gradient(circle at top, rgba(138, 111, 255, 0.15), transparent 40%),
    radial-gradient(circle at bottom, rgba(0, 245, 255, 0.12), transparent 40%), var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  overflow-x: hidden;
}

.glow-overlay::after {
  content: '';
  position: fixed;
  inset: -20%;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.08), transparent 60%);
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  animation: pulseGlow 8s ease-in-out infinite;
}

.nav {
  position: sticky;
  top: 0;
  width: 100%;
  padding: 1.5rem clamp(1.5rem, 4vw, 4rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(22px);
  background: rgba(5, 5, 5, 0.65);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  color: var(--muted);
}

.logo-img {
  height: 32px;    /* adjust size */
  width: auto;
  display: block;
}

.nav__mark {
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  font-weight: 600;
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav__link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  transition: color var(--transition);
  padding-bottom: 0.25rem;
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  flex-grow: 1;
  display: grid;
  place-items: center;
  padding: clamp(4rem, 10vw, 10rem) clamp(1.5rem, 4vw, 4rem);
}

.hero__content {
  text-align: center;
  max-width: 620px;
  animation: heroIn 900ms ease forwards;
  opacity: 0;
  transform: translateY(20px);
}

.hero__logo {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.hero__emblem {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(138, 111, 255, 0.25), rgba(0, 245, 255, 0.15));
  box-shadow: var(--glow);
  animation: emblemScale 1.4s ease forwards;
}

.hero__emblem::after {
  content: '';
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.4), transparent 55%);
  animation: rotateGlow 10s linear infinite;
}

.hero__emblem-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text);
  filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.75));
  animation: floatDot 4s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.hero__subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.social {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.social__link {
  border: 1px solid transparent;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.social__link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(138, 111, 255, 0.35), rgba(0, 245, 255, 0.35));
  opacity: 0;
  transition: opacity var(--transition);
}

.social__link span,
.social__link {
  position: relative;
  z-index: 1;
}

.social__link:hover,
.social__link:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: var(--glow);
}

.social__link:hover::before,
.social__link:focus-visible::before {
  opacity: 1;
}

.join {
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 2rem;
  background: rgba(5, 5, 5, 0.6);
  backdrop-filter: blur(20px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.join__title {
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.join__copy {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.join__form {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.join__input {
  flex: 1;
  min-width: 220px;
  padding: 0.9rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.join__input:focus {
  outline: none;
  border-color: rgba(138, 111, 255, 0.7);
  box-shadow: 0 0 0 2px rgba(138, 111, 255, 0.2);
}

.join__button {
  padding: 0.9rem 1.75rem;
  border-radius: 999px;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--bg);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.join__button:hover,
.join__button:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(138, 111, 255, 0.35);
}

.join__feedback {
  min-height: 1.4rem;
  margin-top: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
}

.join__feedback--visible {
  opacity: 1;
  transform: translateY(0);
}

.join__feedback--success {
  color: #65f6b6;
}

.join__feedback--error {
  color: #ff8f9f;
}

.dev-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.95);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 400ms ease;
  z-index: 20;
}

.dev-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

.dev-overlay__content {
  text-align: center;
  padding: 3rem;
  max-width: 520px;
  border-radius: 32px;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(10, 10, 15, 0.95), rgba(5, 5, 5, 0.9));
  box-shadow: var(--glow);
  animation: overlayIn 600ms ease forwards;
  transform: translateY(20px);
  opacity: 0;
}

.dev-overlay--visible .dev-overlay__content {
  transform: none;
  opacity: 1;
}

.dev-overlay__message {
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  line-height: 1.6;
  margin: 2rem 0;
}

.dev-overlay__close {
  border: 1px solid var(--border);
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}

.dev-overlay__close:hover,
.dev-overlay__close:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.25);
}

.loading-constellation {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
}

.loading-constellation span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 15px rgba(138, 111, 255, 0.6);
  animation: floatDot 1.6s ease-in-out infinite;
}

.loading-constellation span:nth-child(2) {
  animation-delay: 0.15s;
}

.loading-constellation span:nth-child(3) {
  animation-delay: 0.3s;
}

.loading-constellation span:nth-child(4) {
  animation-delay: 0.45s;
}

@keyframes heroIn {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

@keyframes emblemScale {
  0% {
    transform: scale(0.85);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes rotateGlow {
  to {
    transform: rotate(360deg);
  }
}

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

@keyframes overlayIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .nav__links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .join {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero__emblem {
    width: 90px;
    height: 90px;
  }

  .hero__title {
    letter-spacing: 0.08em;
  }

  .join__form {
    flex-direction: column;
  }

  .join__button {
    width: 100%;
  }
}