:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --card-bg: #f9fafb;
  --warn-bg: #fff7ed;
  --warn-border: #fdba74;
  --warn-fg: #9a3412;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f19;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --border: #262b38;
    --accent: #3b82f6;
    --accent-fg: #0b0f19;
    --card-bg: #131826;
    --warn-bg: #2a1a0d;
    --warn-border: #92400e;
    --warn-fg: #fdba74;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

main {
  max-width: 640px;
  margin: 0 auto;
}

h1 {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-bottom: 0.75rem;
}

.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-weight: 600;
}

.card-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.badge.complete {
  color: #15803d;
  border-color: #86efac;
}

.badge.sent {
  color: var(--accent);
  border-color: var(--accent);
}

button {
  font: inherit;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.4rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

tfoot td {
  font-weight: 700;
  border-bottom: none;
}

.warning {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-fg);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

pre.message-preview {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.status-line {
  margin-top: 1rem;
  font-size: 0.9rem;
}

.field-label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

input[type="tel"] {
  font: inherit;
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.empty-state {
  color: var(--muted);
  padding: 2rem 0;
  text-align: center;
}