:root {
  --paper: #F2F4F1;
  --paper-raised: #FFFFFF;
  --ink: #1C2321;
  --ink-soft: #4B5750;
  --jade: #2F6F5E;
  --jade-deep: #234F42;
  --jade-tint: #E3EDE9;
  --vermilion: #B8452F;
  --vermilion-tint: #F6E7E2;
  --gold: #9C7A1E;
  --gold-tint: #F3ECD8;
  --mist: #DCE3DE;
  --mist-deep: #C7D1CA;

  --radius-sm: 6px;
  --radius: 10px;

  --font-display: "Fraunces", Georgia, serif;
  --font-cjk: "Noto Serif TC", "PMingLiU", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

a { color: inherit; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Topbar --- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--mist);
  background: var(--paper-raised);
}

.wordmark {
  font-family: var(--font-cjk);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--jade-deep);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.wordmark-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.topnav {
  display: flex;
  gap: 20px;
  align-items: center;
  font-size: 0.9rem;
}

.topnav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.topnav a:hover,
.topnav a.is-active {
  color: var(--jade-deep);
  border-bottom-color: var(--jade);
}

.topnav-logout {
  color: var(--vermilion) !important;
}

/* --- Shell / panels --- */

.shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.panel {
  background: var(--paper-raised);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}

.panel-head { margin-bottom: 20px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--jade);
  margin: 0 0 6px;
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  color: var(--ink);
}

h1 { font-size: 1.9rem; }
h2 { font-size: 1.35rem; }

/* --- Login --- */

.login-card {
  background: var(--paper-raised);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  max-width: 420px;
  margin: 12vh auto 0;
}

.login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 4px 0 16px;
}

.login-copy {
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.login-error {
  color: var(--vermilion);
  background: var(--vermilion-tint);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

/* --- Forms --- */

.field-row, .field-stack {
  margin-bottom: 18px;
}

.field-stack { display: flex; flex-direction: column; }

label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

select, textarea, input[type="file"] {
  width: 100%;
  font-family: var(--font-cjk);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--mist-deep);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

select { font-family: var(--font-body); }
input[type="file"] { font-family: var(--font-body); font-size: 0.9rem; }

textarea {
  resize: vertical;
  line-height: 1.7;
}

select:focus, textarea:focus, input:focus {
  outline: none;
  border-color: var(--jade);
  box-shadow: 0 0 0 3px var(--jade-tint);
}

.field-hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 6px 0 0;
}

/* --- Buttons --- */

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 22px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--jade);
  color: #fff;
}

.btn-primary:hover { background: var(--jade-deep); }
.btn-primary:disabled { background: var(--mist-deep); cursor: not-allowed; }

.btn-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--jade-deep);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.btn-link-danger { color: var(--vermilion); }

/* --- Alerts --- */

.alert {
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.alert-error {
  background: var(--vermilion-tint);
  color: var(--vermilion);
  border-left: 3px solid var(--vermilion);
}

.alert-warning {
  background: var(--gold-tint);
  color: var(--gold);
  border-left: 3px solid var(--gold);
}

/* --- Cue-card progress strip (signature element) --- */
/* Mirrors the thing this app actually processes: sequential, numbered
   chunks/cues. Each badge is one chunk; it fills in as it completes. */

.cue-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.cue-badge {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--mist-deep);
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.cue-badge.is-active {
  border-color: var(--vermilion);
  color: var(--vermilion);
}

.cue-badge.is-done {
  background: var(--jade);
  border-color: var(--jade);
  color: #fff;
}

/* --- Output --- */

.output-text {
  font-family: var(--font-cjk);
  font-size: 1.02rem;
  min-height: 320px;
}

.save-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
}

.save-status {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.save-status a { color: var(--jade-deep); text-decoration: underline; }

/* --- Files ledger --- */

.ledger {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.ledger th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0 10px 10px;
  border-bottom: 1px solid var(--mist-deep);
}

.ledger td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--mist);
  vertical-align: middle;
}

.ledger-name { font-family: var(--font-cjk); }
.ledger-mono { font-family: var(--font-mono); color: var(--ink-soft); white-space: nowrap; }
.ledger-actions { display: flex; gap: 14px; white-space: nowrap; }

.empty-state {
  color: var(--ink-soft);
  font-style: italic;
  text-align: center;
  padding: 32px 0;
}

/* --- Responsive --- */

@media (max-width: 560px) {
  .shell { padding: 20px 14px 60px; }
  .panel { padding: 20px; }
  .topbar { padding: 14px 16px; }
  h1 { font-size: 1.55rem; }
  .ledger-actions { flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .cue-badge { transition: none; }
}