:root {
  --bg: #0f172a;
  --card: #1e293b;
  --muted: #94a3b8;
  --text: #e2e8f0;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --border: #334155;
  --success: #16a34a;
  --error: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  display: flex;
  justify-content: center;
  padding: 24px 16px;
}

.card {
  width: 100%;
  max-width: 480px;
  background: var(--card);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  height: fit-content;
}

.card-wide {
  max-width: 760px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

h1 {
  font-size: 1.25rem;
  margin: 0;
}

.link {
  color: #60a5fa;
  text-decoration: none;
  font-size: 0.9rem;
}
.link:hover {
  text-decoration: underline;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
}
.btn:hover {
  border-color: var(--muted);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
}
.btn-lg {
  width: 100%;
  padding: 18px;
  font-size: 1.1rem;
  font-weight: 600;
}

.preview {
  margin-top: 16px;
  text-align: center;
}
.preview img {
  max-width: 100%;
  max-height: 320px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.status {
  margin-top: 16px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  background: #0b1220;
  border: 1px solid var(--border);
}
.status-success {
  border-color: var(--success);
  color: #86efac;
}
.status-error {
  border-color: var(--error);
  color: #fca5a5;
}

.result {
  margin-top: 16px;
}
.result label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}
textarea {
  width: 100%;
  background: #0b1220;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  font-size: 0.95rem;
  resize: vertical;
}
.actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* History */
.history {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.row {
  display: flex;
  gap: 12px;
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}
.thumb img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.row-body {
  flex: 1;
  min-width: 0;
}
.row-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.text {
  font-size: 0.9rem;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}
.meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}
.muted {
  color: var(--muted);
}
.err {
  color: #fca5a5;
  font-size: 0.85rem;
  margin-top: 6px;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.badge-sent {
  background: rgba(22, 163, 74, 0.15);
  color: #86efac;
  border-color: var(--success);
}
.badge-ready {
  background: rgba(37, 99, 235, 0.15);
  color: #93c5fd;
  border-color: var(--primary);
}
.badge-created {
  color: var(--muted);
}
.badge-ocr_failed,
.badge-send_failed {
  background: rgba(220, 38, 38, 0.15);
  color: #fca5a5;
  border-color: var(--error);
}