:root {
  color-scheme: dark;
  --bg: #030817;
  --bg-soft: #081225;
  --card: rgba(8, 18, 37, 0.72);
  --line: rgba(148, 163, 184, 0.22);
  --text: #f8fafc;
  --muted: #94a3b8;
  --blue: #2563eb;
  --cyan: #06b6d4;
  --shadow: 0 24px 80px rgba(2, 6, 23, 0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 22% 18%, rgba(37, 99, 235, 0.16), transparent 26%),
    radial-gradient(circle at 78% 24%, rgba(6, 182, 212, 0.18), transparent 24%),
    linear-gradient(180deg, #060d1b 0%, var(--bg) 55%, #020611 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at center, black 38%, transparent 82%);
  opacity: 0.28;
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-family: 'Outfit', sans-serif;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand img {
  width: 32px;
  height: 32px;
  display: block;
}

.account-wrap {
  position: relative;
}

.account-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 18, 37, 0.56);
  color: var(--text);
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  backdrop-filter: blur(16px);
}

.account-button svg {
  width: 10px;
  height: 10px;
  transition: transform 180ms ease;
}

.account-button[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.account-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: min(360px, calc(100vw - 32px));
  display: none;
  background: rgba(8, 18, 37, 0.92);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 14px;
}

.account-menu.open { display: block; }

.account-form {
  display: grid;
  gap: 10px;
}

.account-form label {
  display: grid;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--muted);
}

.account-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(8, 18, 37, 0.5);
  color: var(--text);
  font: inherit;
  padding: 10px 12px;
}

.account-form input:focus {
  outline: 2px solid rgba(37, 99, 235, 0.48);
  outline-offset: 0;
}

.account-submit {
  border: 0;
  border-radius: 999px;
  padding: 11px 14px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  cursor: pointer;
}

.account-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.account-error {
  margin: 0;
  color: #fda4af;
  font-size: 0.84rem;
}

.account-feedback {
  margin: 0;
  min-height: 1.2em;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
}

.account-feedback[data-state="error"] {
  color: #fca5a5;
}

.account-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.84rem;
  margin-top: 8px;
}

.account-actions a {
  color: #cbd5e1;
  text-decoration: none;
}

.account-actions a:hover {
  color: #ffffff;
}

main {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 88px);
  display: grid;
  place-items: center;
  padding: 32px 24px 72px;
}

.hero {
  width: min(880px, 100%);
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 18px;
  padding: 48px 24px;
}

.hero-mark {
  width: min(360px, 58vw);
  height: auto;
  display: block;
  filter: drop-shadow(0 20px 48px rgba(2, 6, 23, 0.45));
}

h1 {
  margin: 0;
  font-family: 'Outfit', sans-serif;
  font-size: clamp(3.6rem, 10vw, 6.8rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.tagline {
  margin: 0;
  font-size: clamp(1.2rem, 2.8vw, 1.8rem);
  color: #e2e8f0;
}

.tagline span {
  color: #22a8ff;
}

.summary {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.actions {
  margin-top: 10px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  padding: 13px 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover { transform: translateY(-1px); }

.button-primary {
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 18px 38px rgba(37, 99, 235, 0.28);
}

.button-secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(8, 18, 37, 0.44);
}

.note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 18px;
  text-align: center;
  font-size: 0.92rem;
  color: var(--muted);
}

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

@media (max-width: 640px) {
  .topbar {
    padding: 18px 16px 0;
  }

  .brand {
    font-size: 1rem;
  }

  .brand img {
    width: 28px;
    height: 28px;
  }

  .account-button {
    padding: 10px 12px;
  }

  .hero {
    padding: 36px 12px 72px;
  }
}