* {
  box-sizing: border-box;
}

:root {
  --ink: #181818;
  --muted: #4c4c4c;
  --panel: #f3f3f3;
  --line: #d6d6d6;
  --button: #202020;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Segoe UI", Arial, sans-serif;
  background: #171417;
}

a {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.page-wrap {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 28px 14px;
}

.panel {
  background: var(--panel);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.34);
}

.panel-body {
  padding: 24px 26px 28px;
}

.login-brand {
  margin-bottom: 10px;
  text-align: center;
}

.login-brand img {
  width: min(100%, 320px);
  height: auto;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 2.85rem);
  line-height: 1.15;
}

.subhead {
  margin: 6px 0 0;
  color: #282828;
  font-size: 1.1rem;
}

.install-card {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.install-card strong,
.install-card span {
  display: block;
}

.install-card strong {
  font-size: 1rem;
}

.install-card span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.92rem;
}

.account-form {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.account-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 1.08rem;
  font-weight: 700;
}

.account-form input {
  width: 100%;
  border: 1px solid #bdbdbd;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 11px 12px;
}

.account-form input:focus {
  outline: 2px solid #111;
  outline-offset: 1px;
}

.btn {
  border: 1px solid var(--button);
  background: var(--button);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 8px 13px;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.account-msg {
  min-height: 20px;
  margin: 7px 0 0;
  color: #1b1b1b;
}

.seed-note {
  display: none;
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
  color: #2f2f2f;
}

.seed-note p {
  margin: 4px 0;
  font-size: 0.95rem;
}

.seed-note .small-note {
  color: #555;
  font-size: 0.82rem;
}

@media (max-width: 560px) {
  .page-wrap {
    padding: 12px 8px;
  }

  .panel-body {
    padding: 18px 15px 22px;
  }

  .install-card {
    grid-template-columns: 1fr;
  }
}