/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #1a2744;
  --navy-light: #243460;
  --gold:       #c9a227;
  --bg:         #f2f3f6;
  --white:      #ffffff;
  --text:       #1e1e2e;
  --muted:      #666676;
  --border:     #dce0e8;
  --radius:     8px;
  --shadow:     0 2px 14px rgba(0, 0, 0, 0.09);
}

body {
  font-family: Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.25rem 5rem;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
header {
  text-align: center;
  padding: 2.8rem 0 2.2rem;
}

.logo-area {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
}

.logo-emblem {
  font-size: 3rem;
  line-height: 1;
  color: var(--navy);
}

.logo-text h1 {
  font-size: 1.75rem;
  color: var(--navy);
  letter-spacing: .03em;
  text-align: left;
}

.logo-text .subtitle {
  font-size: 1rem;
  color: var(--gold);
  font-style: italic;
  text-align: left;
  margin-top: 2px;
}

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 4px solid var(--navy);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-bottom: 1.25rem;
}

.card h2 {
  font-size: 1.1rem;
  color: var(--navy);
  margin-bottom: 1.4rem;
}

.info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  font-size: .88rem;
  color: var(--muted);
  line-height: 1.75;
}

.info-card h3 {
  font-size: .92rem;
  color: var(--navy);
  margin-bottom: .6rem;
}

.info-card ul   { padding-left: 1.2rem; }
.info-card li   { margin-bottom: .35rem; }

.info-card code {
  background: var(--bg);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: monospace;
  font-size: .88em;
  color: var(--navy);
}

.sc { font-variant: small-caps; }

/* ── Drop zone ───────────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  margin-bottom: 1.6rem;
}

.drop-zone.drag-over {
  border-color: var(--navy);
  background: rgba(26, 39, 68, .04);
}

.drop-zone.has-file {
  border-color: var(--gold);
  background: rgba(201, 162, 39, .05);
}

.drop-icon   { font-size: 2.5rem; margin-bottom: .5rem; line-height: 1; }
.drop-text   { font-size: .98rem; color: var(--text); margin-bottom: .2rem; }
.drop-sub    { font-size: .82rem; color: var(--muted); margin: .35rem 0; }

.file-name {
  margin-top: .7rem;
  font-size: .88rem;
  color: var(--navy);
  font-weight: bold;
  word-break: break-all;
}

/* ── Footnote range ──────────────────────────────────────────────────────── */
.fn-range {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.fn-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.fn-field label {
  font-size: .8rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  letter-spacing: .02em;
}

.fn-field input[type="number"] {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .62rem .75rem;
  font-size: 1.05rem;
  font-family: Georgia, serif;
  color: var(--text);
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
  -moz-appearance: textfield;
}

.fn-field input[type="number"]::-webkit-inner-spin-button,
.fn-field input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}

.fn-field input[type="number"]:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26, 39, 68, .12);
}

.fn-sep {
  font-size: 1.4rem;
  color: var(--muted);
  padding-bottom: .55rem;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.5rem;
  border-radius: var(--radius);
  font-size: .95rem;
  font-family: Georgia, serif;
  cursor: pointer;
  border: none;
  transition: background .15s, opacity .15s;
  text-decoration: none;
}

.btn-row {
  display: flex;
  gap: .75rem;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
  flex: 1;
  padding: .9rem;
  font-size: 1rem;
  letter-spacing: .02em;
}

.btn-primary:hover:not(:disabled) { background: var(--navy-light); }
.btn-primary:disabled              { opacity: .45; cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy);
  flex: 1;
  padding: .9rem;
  font-size: 1rem;
  letter-spacing: .02em;
}

.btn-secondary:hover:not(:disabled) { background: rgba(26, 39, 68, .06); }
.btn-secondary:disabled              { opacity: .45; cursor: not-allowed; }

.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy);
  font-size: .85rem;
  padding: .45rem 1.1rem;
}

.btn-outline:hover { background: rgba(26, 39, 68, .06); }

/* ── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, .35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error message ───────────────────────────────────────────────────────── */
.error-msg {
  background: #fff2f2;
  border: 1px solid #f5c6c6;
  color: #b03030;
  border-radius: var(--radius);
  padding: .7rem 1rem;
  font-size: .88rem;
  margin-bottom: 1rem;
  font-family: Arial, sans-serif;
  line-height: 1.5;
}