:root {
  color-scheme: light dark;
  --background: #fafafa;
  --foreground: #1b1b1b;
  --muted: #5c5c5c;
  --border: #d0d0d0;
  --accent: #1d4ed8;
  --error: #b91c1c;
  --surface: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #161616;
    --foreground: #f2f2f2;
    --muted: #a8a8a8;
    --border: #3a3a3a;
    --accent: #8ab4ff;
    --error: #ff8f8f;
    --surface: #1f1f1f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

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

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 700;
  color: var(--foreground);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.signed-in {
  color: var(--muted);
}

.inline-form {
  display: inline;
  margin: 0;
}

.site-main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  min-height: 70vh;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem;
  color: var(--muted);
  text-align: center;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 24rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

label {
  font-weight: 600;
}

input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--background);
  color: var(--foreground);
  font: inherit;
}

button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font: inherit;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.1);
}

.error {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--error);
  border-radius: 6px;
  color: var(--error);
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

textarea {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--background);
  color: var(--foreground);
  font: inherit;
}

.task-list,
.delivery-list {
  padding: 0;
  list-style: none;
}

.task-list-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.task-link {
  font-weight: 600;
}

.reward,
.client,
.status,
.timestamps {
  color: var(--muted);
  font-size: 0.875rem;
}

.task-description {
  white-space: pre-wrap;
}

.delivery {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.delivery-meta,
.delivery-summary {
  margin: 0 0 0.5rem;
}

.delivery-summary {
  white-space: pre-wrap;
}

.artifact-list {
  margin: 0 0 0.5rem;
}

.feedback {
  margin: 0 0 0.5rem;
  color: var(--error);
}

.review-form {
  margin: 0.5rem 0;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
}

.ledger-table th,
.ledger-table td {
  padding: 0.375rem 0.5rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}