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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--fg);
  font-family: var(--font-body);
  background: radial-gradient(120% 90% at 10% 0%, var(--bg1), var(--bg0) 58%);
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.55;
  animation: drift 18s ease-in-out infinite alternate;
}

.orb-a {
  width: min(52vw, 420px);
  height: min(52vw, 420px);
  top: -8%;
  left: -6%;
  background: var(--glow);
}

.orb-b {
  width: min(44vw, 360px);
  height: min(44vw, 360px);
  right: -4%;
  bottom: 8%;
  background: color-mix(in srgb, var(--accent-2) 55%, transparent);
  animation-duration: 22s;
  animation-delay: -4s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.stage {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(1.5rem, 5vw, 4.5rem);
  max-width: 1120px;
  margin: 0 auto;
}

.hero {
  max-width: 34rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.4rem;
}

.mark {
  display: grid;
  place-items: center;
  width: 3.1rem;
  height: 3.1rem;
  border-radius: 0.9rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--bg0);
  background: linear-gradient(145deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--fg) 10%, transparent),
    0 12px 30px var(--glow);
}

.brand-lockup h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.headline {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 550;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0;
  max-width: 28rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

.signin {
  width: min(100%, 24rem);
  justify-self: end;
  padding: 1.6rem 1.5rem 1.35rem;
  border: 1px solid var(--border);
  border-radius: 1.15rem;
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.signin h2 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.signin-form {
  display: grid;
  gap: 0.9rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span {
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--bg0) 55%, transparent);
  color: var(--fg);
  padding: 0.85rem 0.95rem;
  font: inherit;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field input::placeholder {
  color: color-mix(in srgb, var(--muted) 75%, transparent);
}

.field input:focus {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--border));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 28%, transparent);
}

.cta {
  margin-top: 0.25rem;
  border: 0;
  border-radius: 0.75rem;
  padding: 0.9rem 1rem;
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--bg0);
  background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent-2) 70%, var(--accent)));
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease, box-shadow 160ms ease;
  box-shadow: 0 10px 24px var(--glow);
}

.cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.cta:active {
  transform: translateY(0);
}

.cta:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}

.message {
  margin: 0.15rem 0 0;
  min-height: 1.25rem;
  font-size: 0.9rem;
  color: color-mix(in srgb, var(--accent-2) 80%, var(--fg));
}

.message[hidden] {
  display: none;
}

.fineprint {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 700ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.delay-1 {
  animation-delay: 90ms;
}

.delay-2 {
  animation-delay: 170ms;
}

.delay-3 {
  animation-delay: 250ms;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(18px, 24px, 0) scale(1.08);
  }
}

@media (max-width: 860px) {
  .stage {
    grid-template-columns: 1fr;
    align-content: center;
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .signin {
    justify-self: stretch;
    width: 100%;
  }

  .brand-lockup h1 {
    font-size: clamp(2.2rem, 10vw, 3rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .orb {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .cta {
    transition: none;
  }
}