:root {
  --ink: #1a1814;
  --muted: #5c564c;
  --paper: #f3efe6;
  --panel: #fffcf6;
  --line: rgba(26, 24, 20, 0.12);
  --accent: #0f5c4c;
  --accent-ink: #f7f4ec;
  --danger: #8b1e1e;
  --shadow: 0 12px 32px rgba(26, 24, 20, 0.08);
  --display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --body: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --space-1: 0.35rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.35rem;
  --space-5: 1.5rem;
  --radius: 2px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--body);
  background: var(--paper);
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, #f0ebe1 0%, var(--paper) 48%, #ece8de 100%);
}

body.auth-gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.auth-gate .shell {
  width: min(100%, 24rem);
  margin: 0;
  padding: var(--space-5);
  animation: rise 0.45s ease-out both;
}

body.authed {
  display: block;
}

body.authed .atmosphere {
  opacity: 0.55;
}

body.authed .shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  animation: rise 0.45s ease-out both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.shell {
  position: relative;
  z-index: 1;
  width: 100%;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: var(--space-4) var(--space-4) var(--space-5);
}

.panel-narrow {
  width: 100%;
}

.panel-title,
.panel h2 {
  margin: 0 0 var(--space-1);
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.panel-title + .stack {
  margin-top: var(--space-3);
}

.hint {
  margin: 0 0 var(--space-3);
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.95rem;
}

.auth-aux {
  margin: var(--space-3) 0 0;
}

button.link-quiet {
  appearance: none;
  display: inline;
  width: auto;
  background: transparent;
  border: 0;
  border-radius: 0;
  color: var(--muted);
  padding: 0;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  transition: color 0.15s ease;
}

button.link-quiet:hover {
  color: var(--ink);
  filter: none;
}

button.link-quiet:focus-visible {
  outline: 2px solid rgba(15, 92, 76, 0.45);
  outline-offset: 2px;
}

.stack {
  display: grid;
  gap: 0.85rem;
  width: 100%;
}

label {
  display: grid;
  gap: var(--space-1);
  font-size: 0.92rem;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffdf8;
  color: var(--ink);
  padding: 0.7rem 0.75rem;
  font: inherit;
}

input:focus {
  outline: 2px solid rgba(15, 92, 76, 0.35);
  outline-offset: 1px;
}

button {
  appearance: none;
  border: 0;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.75rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease;
}

button:hover { filter: brightness(1.05); }
button:focus-visible {
  outline: 2px solid rgba(15, 92, 76, 0.45);
  outline-offset: 2px;
}

button.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(15, 92, 76, 0.35);
}

.totp-qr {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 0 var(--space-3);
  padding: var(--space-3);
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.totp-qr svg {
  width: min(100%, 11rem);
  height: auto;
  display: block;
}

.mono.secret {
  word-break: break-all;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #fffdf8;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  margin: 0 0 var(--space-3);
  font-size: 0.9rem;
}

.app-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.session { margin: 0; color: var(--muted); font-size: 0.92rem; }

.nav-stub {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.nav-item {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  font-weight: 500;
}

.nav-item[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
}

.workspace {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-3);
}

@media (max-width: 860px) {
  .workspace { grid-template-columns: 1fr; }
}

.editor-stub, .preview-pane {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffdf8;
  padding: var(--space-3);
}

.preview-pane h3 {
  margin: 0 0 var(--space-1);
  font-family: var(--display);
}

.preview-frame {
  min-height: 10rem;
  margin: 0.75rem 0 var(--space-3);
  border: 1px dashed rgba(15, 92, 76, 0.35);
  border-radius: var(--radius);
  padding: 0.85rem;
  background:
    linear-gradient(180deg, rgba(15, 92, 76, 0.04), transparent),
    #fbf8f1;
}

.preview-placeholder { margin: 0; color: var(--muted); }

.meta { margin: 0.75rem 0 0; color: var(--muted); font-size: 0.88rem; }

.error {
  margin-top: var(--space-3);
  color: var(--danger);
  background: rgba(139, 30, 30, 0.08);
  border: 1px solid rgba(139, 30, 30, 0.2);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
}