:root {
  --ink: #0c1218;
  --ink-mid: #152028;
  --mist: #1e333c;
  --teal-soft: #3d6b72;
  --teal-bright: #7eb8c0;
  --fog: #c5d4d8;
  --paper: #e8eef0;
  --muted: #a8bdc4;
  --cta: #63a4ad;
  --cta-hover: #76b6bf;
  --panel: rgba(21, 32, 40, 0.72);
  --panel-border: rgba(126, 184, 192, 0.28);
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Sora", "Segoe UI", sans-serif;
  --focus-ring: 2px solid var(--teal-bright);
  --focus-offset: 3px;
  --tap-min: 2.75rem;
  --page-pad: clamp(1.25rem, 5vw, 3.5rem);
  --content: min(48rem, 100%);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--paper);
  background-color: var(--ink);
  line-height: 1.55;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  inset-inline-start: 0.75rem;
  top: 0.75rem;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0.5rem 1rem;
  border-radius: 0.3rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(
      ellipse 90% 70% at 15% 20%,
      rgba(61, 107, 114, 0.45) 0%,
      transparent 55%
    ),
    radial-gradient(
      ellipse 80% 60% at 88% 75%,
      rgba(30, 51, 60, 0.9) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse 55% 45% at 50% 40%,
      rgba(21, 32, 40, 0.75) 0%,
      transparent 65%
    ),
    linear-gradient(165deg, var(--ink-mid) 0%, var(--ink) 45%, #0a1014 100%);
  animation: mist-drift 28s ease-in-out infinite alternate;
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.07;
  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='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content);
  margin: 0 auto;
  padding: 1.25rem var(--page-pad) 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-min);
  height: var(--tap-min);
  margin: 0;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease;
  opacity: 0;
  animation: rise-in 0.8s ease 0.08s forwards;
}

.home-link:hover {
  color: var(--paper);
  border-color: var(--panel-border);
  background: rgba(21, 32, 40, 0.55);
}

.home-link:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.login-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding-inline: 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: none;
  opacity: 0.55;
  transition: color 0.2s ease, opacity 0.2s ease;
  animation: rise-in 0.8s ease 0.12s forwards;
}

.login-link:hover {
  color: var(--fog);
  opacity: 0.9;
}

.login-link:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  opacity: 1;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: min(72vh, 38rem);
  min-height: min(72dvh, 38rem);
  padding: clamp(2.5rem, 8vh, 5rem) var(--page-pad) clamp(2rem, 6vh, 3.5rem);
}

.hero-inner {
  max-width: 40rem;
  width: 100%;
  text-align: center;
}

.brand {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.35rem, 8vw, 3.85rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
  overflow-wrap: break-word;
  opacity: 0;
  animation: rise-in 0.95s ease 0.22s forwards;
}

.headline {
  margin: 0 0 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(1.1rem, 2.8vw, 1.35rem);
  line-height: 1.35;
  color: var(--fog);
  opacity: 0;
  animation: rise-in 0.9s ease 0.36s forwards;
}

.lede {
  margin: 0 auto 2rem;
  max-width: 32rem;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--muted);
  opacity: 0;
  animation: rise-in 0.9s ease 0.48s forwards;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1rem;
  margin: 0;
  opacity: 0;
  animation: rise-in 0.9s ease 0.6s forwards;
}

.demo-link {
  margin: 1.25rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  opacity: 0;
  animation: rise-in 0.9s ease 0.72s forwards;
}

.demo-link a {
  color: var(--teal-bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.demo-link a:hover {
  color: var(--fog);
  border-bottom-color: var(--teal-soft);
}

.demo-link a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap-min);
  padding: 0.75rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 0.3rem;
  background: var(--cta);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color 0.25s ease,
    color 0.25s ease,
    transform 0.25s ease,
    border-color 0.25s ease;
}

.cta:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
}

.cta:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.cta-secondary {
  background: transparent;
  border-color: var(--teal-bright);
  color: var(--fog);
}

.cta-secondary:hover {
  background: rgba(61, 107, 114, 0.22);
  border-color: var(--teal-bright);
  color: var(--paper);
}

main {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

.site-footer {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--page-pad) 3rem;
  border-top: 1px solid rgba(126, 184, 192, 0.12);
  padding-top: 1.25rem;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.75rem;
}

.copy-email {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0;
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.copy-email:hover {
  color: var(--fog);
  border-bottom-color: var(--teal-soft);
}

.copy-email:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.copy-feedback {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--teal-bright);
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding-block: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.site-footer a:hover {
  color: var(--fog);
  border-bottom-color: var(--teal-soft);
}

.site-footer a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.invite-dialog {
  width: min(26rem, calc(100vw - 2rem));
  margin: auto;
  padding: 1.5rem 1.35rem 1.35rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.4rem;
  background: var(--ink-mid);
  color: var(--paper);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.45);
}

.invite-dialog::backdrop {
  background: rgba(8, 12, 16, 0.72);
}

.invite-dialog h2 {
  margin: 0 0 0.5rem;
  padding-right: 2rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--fog);
}

.dialog-lede {
  margin: 0 0 1.1rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.dialog-lede strong {
  color: var(--fog);
  font-weight: 600;
}

.dialog-close {
  position: absolute;
  top: 0.65rem;
  inset-inline-end: 0.75rem;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 0.3rem;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.dialog-close:hover {
  color: var(--paper);
}

.dialog-close:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.invite-dialog {
  position: relative;
}

.invite-dialog .invite-form {
  display: grid;
  gap: 0.75rem;
}

.invite-input {
  min-height: var(--tap-min);
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.3rem;
  background: rgba(12, 18, 24, 0.65);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.invite-input::placeholder {
  color: rgba(168, 189, 196, 0.55);
}

.invite-input:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.invite-dialog .cta {
  justify-self: stretch;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(0.85rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes mist-drift {
  from {
    transform: scale(1) translate(0, 0);
    opacity: 1;
  }
  to {
    transform: scale(1.04) translate(-1.5%, 1%);
    opacity: 0.92;
  }
}

@media (max-width: 40rem) {
  .hero {
    min-height: min(64vh, 32rem);
    min-height: min(64dvh, 32rem);
    align-items: flex-end;
    padding-bottom: clamp(2rem, 8vh, 3.5rem);
  }

  .hero-inner {
    text-align: left;
  }

  .cta-row {
    justify-content: flex-start;
  }

  .demo-link {
    text-align: left;
  }

  .brand {
    font-size: clamp(2.1rem, 9.5vw, 3rem);
  }

  .lede {
    font-size: 1rem;
    margin-bottom: 1.75rem;
  }

  .cta {
    flex: 1 1 auto;
    min-width: min(100%, 9.5rem);
  }

  .invite-dialog .cta {
    width: 100%;
    justify-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .atmosphere {
    animation: none;
  }

  .skip-link {
    transition: none;
  }

  .home-link,
  .login-link,
  .brand,
  .headline,
  .lede,
  .cta-row,
  .demo-link {
    opacity: 1;
    animation: none;
  }

  .cta,
  .home-link,
  .login-link,
  .copy-email,
  .site-footer a {
    transition: none;
  }

  .cta:hover {
    transform: none;
  }
}