:root {
  --bg: #f5f6fb;
  --bg-glow: rgba(99, 102, 241, 0.14);
  --surface: #ffffff;
  --surface-muted: #f0f1f8;
  --border: #e2e4ef;
  --text: #14152b;
  --text-muted: #5d6079;
  --accent: #5b4bf0;
  --accent-strong: #4532d9;
  --accent-soft: rgba(91, 75, 240, 0.12);
  --accent-text: #ffffff;
  --success: #0f9d63;
  --success-soft: rgba(15, 157, 99, 0.12);
  --warning: #b86e00;
  --warning-soft: rgba(214, 140, 0, 0.14);
  --danger: #d23a4b;
  --danger-soft: rgba(210, 58, 75, 0.12);
  --shadow: 0 1px 2px rgba(20, 21, 43, 0.04), 0 8px 24px rgba(20, 21, 43, 0.06);
  --radius: 18px;
  --radius-small: 11px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0d18;
    --bg-glow: rgba(124, 108, 255, 0.18);
    --surface: #151627;
    --surface-muted: #1d1f35;
    --border: #2a2c47;
    --text: #ecedf8;
    --text-muted: #9a9cbb;
    --accent: #8b7dff;
    --accent-strong: #a69bff;
    --accent-soft: rgba(139, 125, 255, 0.16);
    --accent-text: #0c0d18;
    --success: #3ddc97;
    --success-soft: rgba(61, 220, 151, 0.14);
    --warning: #ffb547;
    --warning-soft: rgba(255, 181, 71, 0.14);
    --danger: #ff6b7d;
    --danger-soft: rgba(255, 107, 125, 0.14);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0c0d18;
  --bg-glow: rgba(124, 108, 255, 0.18);
  --surface: #151627;
  --surface-muted: #1d1f35;
  --border: #2a2c47;
  --text: #ecedf8;
  --text-muted: #9a9cbb;
  --accent: #8b7dff;
  --accent-strong: #a69bff;
  --accent-soft: rgba(139, 125, 255, 0.16);
  --accent-text: #0c0d18;
  --success: #3ddc97;
  --success-soft: rgba(61, 220, 151, 0.14);
  --warning: #ffb547;
  --warning-soft: rgba(255, 181, 71, 0.14);
  --danger: #ff6b7d;
  --danger-soft: rgba(255, 107, 125, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 85% -10%, var(--bg-glow), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, var(--bg-glow), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}

a {
  color: var(--accent);
}

svg {
  display: block;
}

.mono {
  font-family: var(--mono);
}

/* Top bar */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 16px 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  flex: none;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(91, 75, 240, 0.35);
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.topbar-actions {
  display: flex;
  gap: 8px;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
}

.icon-button:hover {
  border-color: var(--accent);
}

.icon-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Layout */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px;
  align-items: start;
}

.column {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.sticky {
  position: sticky;
  top: 16px;
}

@media (max-width: 880px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .sticky {
    position: static;
    order: -1;
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  min-width: 0;
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.step {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

/* Fields */

.field {
  display: grid;
  gap: 6px;
  margin: 0 0 16px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.field > span,
.field > legend {
  padding: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.field > legend {
  margin-bottom: 6px;
}

.field em {
  font-style: normal;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}

.field-pair {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
}

@media (max-width: 520px) {
  .field-pair {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}

input[type="text"],
input[type="password"],
input[type="url"],
input[type="number"] {
  width: 100%;
  min-width: 0;
  height: 44px;
  padding: 0 14px;
  font: inherit;
  color: var(--text);
  background: var(--surface-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  outline: none;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}

input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

input:focus {
  background: var(--surface);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

input[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-soft);
}

input.mono {
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

.input-row {
  display: flex;
  gap: 8px;
  min-width: 0;
}

.hint {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.hint.error {
  color: var(--danger);
}

.secret-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 16px;
  flex: none;
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, color 0.15s;
}

.button:hover {
  border-color: var(--accent);
}

.button:active {
  transform: scale(0.97);
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.button:focus-visible,
.icon-button:focus-visible,
.code-reveal:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--accent-soft);
  border-color: var(--accent);
}

.button svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button.ghost {
  background: var(--surface-muted);
  border-color: transparent;
}

.button.ghost:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.button.square {
  width: 44px;
  padding: 0;
  font-size: 20px;
}

.button.primary {
  color: var(--accent-text);
  background: var(--accent);
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

/* Segmented controls */

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  background: var(--surface-muted);
  border-radius: var(--radius-small);
  width: fit-content;
  max-width: 100%;
}

.segmented label {
  position: relative;
}

.segmented input {
  position: absolute;
  opacity: 0;
  inset: 0;
  margin: 0;
  cursor: pointer;
}

.segmented span {
  display: block;
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  pointer-events: none;
}

.segmented input:checked + span {
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(20, 21, 43, 0.12);
}

.segmented input:focus-visible + span {
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Extras */

.extras {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.extras summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.extras[open] summary {
  margin-bottom: 14px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  position: relative;
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.switch {
  flex: none;
  position: relative;
  width: 40px;
  height: 24px;
  border-radius: 999px;
  background: var(--border);
  transition: background 0.2s;
}

.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s;
}

.toggle input:checked + .switch {
  background: var(--accent);
}

.toggle input:checked + .switch::after {
  transform: translateX(16px);
}

.toggle input:focus-visible + .switch {
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* QR card */

.qr-card {
  display: grid;
  gap: 16px;
}

.qr-frame {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 340px;
  margin: 0 auto;
  padding: 10px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.35), rgba(147, 51, 234, 0.35));
}

.qr,
.qr-empty {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  overflow: hidden;
  background: #ffffff;
}

.qr svg {
  width: 100%;
  height: 100%;
  animation: pop 0.25s ease-out;
}

@keyframes pop {
  from {
    opacity: 0.4;
    transform: scale(0.985);
  }
}

.qr-empty {
  position: absolute;
  inset: 10px;
  width: auto;
  height: auto;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 10px;
  padding: 24px;
  text-align: center;
  background: var(--surface-muted);
  color: var(--text-muted);
}

.qr-empty svg {
  width: 48px;
  height: 48px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  opacity: 0.6;
}

.qr-empty p {
  margin: 0;
  font-size: 14px;
}

.qr-meta {
  display: grid;
  justify-items: center;
  gap: 2px;
  text-align: center;
  min-width: 0;
}

.qr-meta strong {
  font-size: 16px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.qr-meta > span {
  color: var(--text-muted);
  font-size: 13px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-top: 6px;
}

.chip {
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.actions {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
}

.uri {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-small);
  background: var(--surface-muted);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  word-break: break-all;
  max-height: 84px;
  overflow: auto;
}

/* Verify card */

.verify-card .hint {
  margin-bottom: 14px;
}

.verify-form {
  display: flex;
  gap: 8px;
}

.otp-input {
  flex: 1;
  height: 52px !important;
  font-size: 22px !important;
  font-weight: 600;
  letter-spacing: 0.3em !important;
  text-align: center;
}

.verify-result {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-small);
  font-size: 14px;
  animation: pop 0.2s ease-out;
}

.verify-result strong {
  display: block;
}

.verify-result.valid {
  background: var(--success-soft);
  color: var(--success);
}

.verify-result.drift {
  background: var(--warning-soft);
  color: var(--warning);
}

.verify-result.invalid {
  background: var(--danger-soft);
  color: var(--danger);
}

.verify-result .detail {
  color: var(--text-muted);
}

.verify-result svg {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.expected {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.ring {
  position: relative;
  flex: none;
  width: 52px;
  height: 52px;
}

.ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring circle {
  fill: none;
  stroke-width: 3.5;
}

.ring-track {
  stroke: var(--surface-muted);
}

.ring-progress {
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-dasharray: 100;
  transition: stroke-dashoffset 0.25s linear, stroke 0.3s;
}

.ring.low .ring-progress {
  stroke: var(--danger);
}

.ring span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.expected-codes {
  display: grid;
  min-width: 0;
  flex: 1;
}

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.code-reveal {
  justify-self: start;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: none;
  color: var(--text);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  font-variant-numeric: tabular-nums;
}

.code-reveal.concealed {
  color: var(--text-muted);
}

.counter-controls {
  display: flex;
  gap: 6px;
}

/* Footer and toast */

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 8px 16px 40px;
  color: var(--text-muted);
  font-size: 13px;
}

.footer p {
  max-width: 720px;
  margin: 8px 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

[hidden] {
  display: none !important;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}