:root {
  --bg: #f4f6f7;
  --card: #ffffff;
  --ink: #17212b;
  --muted: #5b6874;
  --line: #d6dde2;
  --accent: #0d6b6e;
  --accent-ink: #ffffff;
  --error: #a23a2c;
  --error-bg: #f8e6e2;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b;
    --card: #161e26;
    --ink: #e4e9ee;
    --muted: #9fadba;
    --line: #2a3540;
    --accent: #5cc4c4;
    --accent-ink: #0f151b;
    --error: #ec8b7c;
    --error-bg: #351c18;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--ink);
  padding: 24px 16px;
}

main {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 32px 28px;
}

.brand { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin: 0 0 6px; }
h1 { font-size: 24px; margin: 0 0 6px; }
.lede { color: var(--muted); margin: 0 0 24px; font-size: 15px; }

form { display: grid; gap: 16px; }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
input {
  font: inherit;
  font-weight: 400;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  color: var(--ink);
}
input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.hint { font-weight: 400; color: var(--muted); font-size: 13px; }
.field-error { font-weight: 400; color: var(--error); font-size: 13px; }

button {
  font: inherit;
  font-weight: 600;
  padding: 11px 14px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
}
button:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.alert { background: var(--error-bg); color: var(--error); border-radius: 6px; padding: 10px 12px; font-size: 14px; }
.switch { margin: 22px 0 0; font-size: 14px; color: var(--muted); text-align: center; }
a { color: var(--accent); }
.code { letter-spacing: .3em; font-size: 20px; text-align: center; }

/* Multi-factor authentication (#20682) */
.notice { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; font-size: 14px; }
.steps { margin: 0 0 20px; padding-left: 20px; display: grid; gap: 12px; font-size: 14px; }
.qr { display: block; margin: 10px 0 0; width: 200px; height: 200px; background: #ffffff; border-radius: 6px; }
.secret { display: block; margin-top: 6px; font-size: 14px; word-break: break-all; }
details { margin-top: 6px; font-size: 13px; color: var(--muted); }
.recovery-codes { list-style: none; padding: 0; margin: 0 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.recovery-codes code { font-size: 15px; }
.section { margin-top: 24px; }
a.button {
  display: block;
  text-align: center;
  text-decoration: none;
  font-weight: 600;
  padding: 11px 14px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
}
button.secondary { background: transparent; color: var(--error); border: 1px solid var(--line); }
button.link { background: none; color: var(--accent); padding: 0; font-weight: 400; text-decoration: underline; }

/* Account area: Profile and Security (#20884) */
main.account { max-width: 760px; }
.account-layout { display: grid; grid-template-columns: 160px 1fr; gap: 28px; }
.account-nav { display: grid; gap: 4px; align-content: start; }
.account-nav a { padding: 8px 10px; border-radius: 6px; text-decoration: none; color: var(--ink); font-size: 14px; }
.account-nav a[aria-current="page"] { background: var(--bg); color: var(--accent); font-weight: 600; }
.account-panel { display: grid; gap: 16px; align-content: start; min-width: 0; }
.account-panel section + section { border-top: 1px solid var(--line); padding-top: 22px; }
.account-panel h2 { font-size: 16px; margin: 0 0 12px; }
.current-value { margin: 0 0 12px; font-size: 15px; word-break: break-all; }
.inline-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; }
summary { cursor: pointer; color: var(--accent); font-size: 14px; margin-bottom: 12px; }
@media (max-width: 640px) {
  .account-layout { grid-template-columns: 1fr; gap: 18px; }
  .account-nav { grid-auto-flow: column; justify-content: start; }
}

/* Client administration (/admin/clients) */
main.admin { max-width: 860px; }
.admin h2 { font-size: 17px; margin: 0 0 10px; }
.admin section + section { border-top: 1px solid var(--line); margin-top: 24px; padding-top: 22px; }
textarea, select {
  font: inherit;
  font-weight: 400;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  color: var(--ink);
}
textarea { min-height: 76px; resize: vertical; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 13px; }
textarea:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: 10px 14px 12px; margin: 0; display: grid; gap: 8px; }
legend { font-size: 14px; font-weight: 600; padding: 0 4px; }
label.choice { display: flex; gap: 8px; align-items: center; font-weight: 400; }
label.choice input { padding: 0; }
.client-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.client-card { border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; }
.client-card h2 { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.facts { display: grid; grid-template-columns: 170px 1fr; gap: 6px 14px; margin: 0; font-size: 14px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.facts ul { margin: 0; padding: 0; list-style: none; }
.status { font-size: 12px; font-weight: 600; border-radius: 999px; padding: 2px 9px; background: var(--bg); border: 1px solid var(--line); }
.status.disabled { color: var(--error); background: var(--error-bg); border-color: transparent; }
.one-time { display: block; font-size: 16px; padding: 12px; border: 1px dashed var(--accent); border-radius: 6px; overflow-wrap: anywhere; user-select: all; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
@media (max-width: 640px) {
  .facts { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: 8px; }
}