:root {
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, sans-serif;
  background:
    radial-gradient(circle at top, rgba(34, 54, 75, 0.08), transparent 34%),
    #f4f1eb;
  color: #171a22;
}

.admin-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.admin-card {
  width: min(420px, 100%);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(23, 26, 34, 0.08);
  box-shadow: 0 28px 60px rgba(34, 54, 75, 0.12);
  padding: 28px;
  display: grid;
  gap: 16px;
}

.admin-mark {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6e7684;
}

.admin-title,
.admin-missing h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4.5vw, 2.1rem);
  line-height: 1;
}

.admin-copy,
.admin-status,
.admin-missing p,
.admin-session p,
.admin-hint {
  margin: 0;
  color: #5d6776;
  line-height: 1.65;
}

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

.admin-form input {
  width: 100%;
  min-height: 50px;
  border-radius: 14px;
  border: 1px solid rgba(23, 26, 34, 0.12);
  background: #ffffff;
  color: #171a22;
  padding: 0 14px;
  font: inherit;
}

.admin-form input:focus {
  outline: 2px solid rgba(31, 157, 139, 0.18);
  border-color: rgba(31, 157, 139, 0.52);
}

.admin-button {
  appearance: none;
  border: 0;
  min-height: 50px;
  border-radius: 14px;
  background: #171a22;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.admin-button-secondary {
  background: rgba(23, 26, 34, 0.05);
  color: #171a22;
  border: 1px solid rgba(23, 26, 34, 0.1);
}

.admin-hint code {
  font-family: ui-monospace, SFMono-Regular, monospace;
  color: #171a22;
}

.admin-session,
.admin-missing {
  display: grid;
  gap: 12px;
  padding-top: 4px;
}

.admin-session-actions {
  display: grid;
  gap: 10px;
}

.admin-status {
  min-height: 22px;
  font-size: 0.92rem;
}

.admin-status[data-tone="success"] {
  color: #1a7f5b;
}

.admin-status[data-tone="error"] {
  color: #b94a48;
}

.admin-status[data-tone="warning"] {
  color: #9a6518;
}

[hidden] {
  display: none !important;
}

@media (max-width: 560px) {
  .admin-shell {
    padding: 16px;
  }

  .admin-card {
    padding: 22px;
  }
}