:root {
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-fg: #ffffff;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --fg: #0f172a;
  --fg-muted: #475569;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --error: #b91c1c;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --warn-border: #fcd34d;
  --success: #047857;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --info: #1e40af;
  --info-bg: #eff6ff;
  --info-border: #bfdbfe;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --max-w: 760px;
  --focus-ring: 3px solid #93c5fd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --bg: #0b1220;
    --surface: #111827;
    --surface-2: #1f2937;
    --fg: #e5e7eb;
    --fg-muted: #94a3b8;
    --border: #1f2937;
    --border-strong: #334155;
    --error: #fca5a5;
    --error-bg: #2a1212;
    --error-border: #7f1d1d;
    --warn: #fde68a;
    --warn-bg: #2a1f0a;
    --warn-border: #b45309;
    --success: #6ee7b7;
    --success-bg: #052e1f;
    --success-border: #065f46;
    --info: #93c5fd;
    --info-bg: #0c1c3a;
    --info-border: #1e3a8a;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
    --focus-ring: 3px solid #60a5fa;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  min-height: 100vh;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.page-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.page-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 1rem;
}
.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  letter-spacing: -0.01em;
}
.page-sub { margin: 0; color: var(--fg-muted); }

main#wizard {
  max-width: var(--max-w);
  margin: 1.5rem auto 3rem;
  padding: 0 1.25rem;
}

.page-footer {
  max-width: var(--max-w);
  margin: 2rem auto;
  padding: 0 1.25rem;
  color: var(--fg-muted);
  text-align: center;
}
.page-footer a { color: var(--fg-muted); text-decoration: underline; }

/* ---------- Wizard stepper ---------- */

.wizard-stepper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.wizard-stepper li {
  flex: 1 1 auto;
  padding: 0.4rem 0.5rem;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  text-align: center;
}
.wizard-stepper li[data-active="true"] {
  color: var(--fg);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
.wizard-stepper li[data-done="true"] {
  color: var(--success);
  border-bottom-color: var(--success);
}
.wizard-stepper .num {
  display: inline-block;
  min-width: 1.4em;
  margin-right: 0.25rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- Card surface ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 1rem; }
.card h2 { font-size: 1.25rem; margin: 0 0 0.75rem; }
.card h3 { font-size: 1.05rem; margin: 1rem 0 0.5rem; }
.card p  { margin: 0.5rem 0; }
.card ul { margin: 0.5rem 0; padding-left: 1.25rem; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: inherit;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-fg);
  min-height: 48px;
  min-width: 120px;
  text-decoration: none;
}
.btn:hover  { background: var(--accent-hover); }
.btn:focus-visible { outline: var(--focus-ring); outline-offset: 2px; }
.btn:disabled { background: var(--border-strong); cursor: not-allowed; color: var(--fg-muted); }

.btn-secondary {
  background: var(--surface);
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--surface-2); }

.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover { background: #991b1b; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* ---------- Banners ---------- */

.banner {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  margin: 0.75rem 0;
  font-size: 0.95rem;
}
.banner.info    { background: var(--info-bg);    border-color: var(--info-border);    color: var(--info); }
.banner.warn    { background: var(--warn-bg);    border-color: var(--warn-border);    color: var(--warn); }
.banner.error   { background: var(--error-bg);   border-color: var(--error-border);   color: var(--error); }
.banner.success { background: var(--success-bg); border-color: var(--success-border); color: var(--success); }
.banner strong { color: inherit; }

/* ---------- Drag-drop uploader ---------- */

.drop {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 2.25rem 1rem;
  text-align: center;
  background: var(--surface-2);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.drop:focus-visible { outline: var(--focus-ring); outline-offset: 2px; }
.drop.drag-over {
  background: var(--info-bg);
  border-color: var(--accent);
}
.drop p { margin: 0.25rem 0; }
.drop-hint { color: var(--fg-muted); font-size: 0.9rem; }

/* ---------- Progress bar ---------- */

progress.bar {
  appearance: none;
  width: 100%;
  height: 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface-2);
}
progress.bar::-webkit-progress-bar { background: var(--surface-2); }
progress.bar::-webkit-progress-value {
  background: var(--accent);
  transition: width 0.25s ease;
}
progress.bar::-moz-progress-bar { background: var(--accent); }
progress.bar.indeterminate { animation: pulse 1.6s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

.progress-counts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem 1rem;
  margin-top: 1rem;
}
.progress-counts dt { color: var(--fg-muted); font-size: 0.85rem; }
.progress-counts dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------- Forms ---------- */

label.field {
  display: block;
  margin-top: 1rem;
  font-weight: 600;
}
label.field .field-hint {
  display: block;
  font-weight: 400;
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-top: 0.15rem;
}

select, input[type="text"] {
  display: block;
  width: 100%;
  font: inherit;
  padding: 0.65rem 0.75rem;
  margin-top: 0.4rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg);
  min-height: 48px;
}
select:focus-visible, input:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

/* ---------- Identity chip (post-login) ---------- */

.identity-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.identity-chip .who { color: var(--fg); font-weight: 600; }
.identity-chip a { margin-left: 0.25rem; }

/* ---------- Helpers ---------- */

.muted   { color: var(--fg-muted); }
.small   { font-size: 0.9rem; }
.center  { text-align: center; }
code     { background: var(--surface-2); padding: 0 0.25rem; border-radius: 4px; font-size: 0.9em; }

.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: -0.15em;
  margin-right: 0.4rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .page-header h1 { font-size: 1.5rem; }
  .wizard-stepper li { font-size: 0.8rem; padding: 0.35rem 0.25rem; }
  .progress-counts { grid-template-columns: 1fr 1fr; }
}