:root {
  --bg: #0a0f14;
  --panel: #111923;
  --panel-strong: #172332;
  --text: #eaf7f2;
  --muted: #9fb3bd;
  --mint: #00f5a0;
  --cyan: #00d9ff;
  --pink: #f72585;
  --line: rgba(234, 247, 242, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  display: grid;
  place-items: center;
  padding:
    max(28px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(28px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
  background: radial-gradient(circle at top left, rgba(0, 217, 255, 0.16), transparent 36%), var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.signup-shell {
  width: min(94vw, 960px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 32px;
  align-items: center;
}

.brand-panel,
.signup-panel {
  min-width: 0;
}

.logo {
  width: min(100%, 460px);
  display: block;
  margin-bottom: 24px;
}

.brand-copy {
  display: grid;
  gap: 8px;
}

.eyebrow {
  margin: 0;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 540px;
  margin: 0;
  font-size: clamp(2.25rem, 6vw, 4.9rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.signup-panel {
  display: grid;
  gap: 18px;
  padding: 24px;
  background: color-mix(in srgb, var(--panel) 92%, black);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.signup-form {
  display: grid;
  gap: 12px;
}

label {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 14px;
  background: var(--panel-strong);
  color: var(--text);
  font: inherit;
  outline: none;
}

input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.18);
}

input.field-error,
input.field-error:focus {
  border-color: var(--pink);
  background: rgba(247, 37, 133, 0.08);
  box-shadow:
    0 0 0 3px rgba(247, 37, 133, 0.2),
    0 0 22px rgba(247, 37, 133, 0.12);
}

.field-hint {
  margin-top: -6px;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

button {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, filter 0.18s ease, border-color 0.18s ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button:disabled {
  cursor: wait;
  opacity: 0.64;
}

.primary-action {
  background: linear-gradient(135deg, var(--mint), var(--cyan));
  color: #061014;
}

.text-action {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--cyan);
  font-size: 0.92rem;
  font-weight: 800;
  text-align: center;
}

.text-action:hover:not(:disabled),
.text-action:focus-visible {
  color: var(--mint);
  text-decoration: underline;
}

.account-link {
  color: var(--cyan);
  font-size: 0.92rem;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.account-link:hover,
.account-link:focus-visible {
  color: var(--mint);
  text-decoration: underline;
}

.signup-status {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.signup-status.error {
  border: 1px solid rgba(247, 37, 133, 0.42);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(247, 37, 133, 0.1);
  color: #ffb1d1;
}

.signup-status.error strong {
  display: block;
  margin-bottom: 6px;
  color: #ffd4e6;
}

.signup-status.error ul {
  margin: 0;
  padding-left: 20px;
}

.signup-status.error li + li {
  margin-top: 4px;
}

.signup-status.loading {
  color: var(--cyan);
}

.signup-status.success {
  border: 1px solid rgba(0, 245, 160, 0.38);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(0, 245, 160, 0.1);
  color: #baffdf;
}

@media (max-width: 760px) {
  body {
    align-items: start;
  }

  .signup-shell {
    width: min(100%, 560px);
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .logo {
    width: min(84vw, 360px);
    margin-inline: auto;
  }

  .brand-copy {
    text-align: center;
  }

  h1 {
    margin-inline: auto;
    font-size: clamp(2rem, 12vw, 3.8rem);
  }
}

@media (max-width: 480px) {
  body {
    padding-inline:
      max(12px, env(safe-area-inset-left))
      max(12px, env(safe-area-inset-right));
  }

  .signup-panel {
    padding: 18px;
  }

  .logo {
    width: min(74vw, 300px);
    margin-bottom: 16px;
  }

  h1 {
    font-size: clamp(1.9rem, 11vw, 3rem);
  }

  input,
  button {
    min-height: 50px;
  }
}