:root {
  --brand: #1a1a1a;
  --accent: #c0392b;
  --ok: #1a7f37;
  --fail: #c0392b;
  --pend: #b7791f;
  --bg: #f4f4f4;
  --card-bg: #ffffff;
  --border: #e2e2e2;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: #222;
}
.container { max-width: 900px; margin: 0 auto; padding: 20px 16px 60px; }

.topbar { background: #fff; border-bottom: 1px solid var(--border); }
.topbar-inner { max-width: 900px; margin: 0 auto; padding: 14px 16px; display: flex; align-items: center; gap: 14px; }
.topbar-logo { height: 40px; width: auto; }
.topbar-title { flex: 1; display: flex; flex-direction: column; line-height: 1.3; }
.topbar-title span { font-size: 12px; color: #777; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; }
.muted { color: #777; }
.small { font-size: 13px; }

.kv { width: 100%; border-collapse: collapse; font-size: 14px; }
.kv td { padding: 6px 0; border-bottom: 1px solid #f0f0f0; }
.kv td:first-child { color: #777; width: 160px; }

.preview-frame { width: 100%; height: 480px; border: 1px solid var(--border); border-radius: 6px; margin-top: 10px; background: #fff; }

form { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 8px; }
.inline-form input { flex: 1; min-width: 160px; }
input[type="text"], input[type="email"], input[type="password"], input[type="file"] {
  padding: 9px 10px;
  border: 1px solid #d0d0d0;
  border-radius: 6px;
  font-size: 14px;
}

.btn {
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid #d0d0d0;
  background: #f7f7f7;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
.btn:hover { background: #eee; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn-primary:hover { background: #333; }
.btn-secondary { background: #eef3ff; border-color: #cfe0ff; }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--fail); border-color: #f2c6c0; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.btn-row-danger { border-top: 1px dashed var(--border); padding-top: 12px; margin-top: 14px; }

.btn-filter { padding: 6px 12px; border-radius: 20px; border: 1px solid #d0d0d0; background: #fff; cursor: pointer; font-size: 13px; }
.btn-filter.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.stat { flex: 1; min-width: 100px; background: #fafafa; border: 1px solid var(--border); border-radius: 8px; padding: 12px; text-align: center; }
.stat span { display: block; font-size: 24px; font-weight: 700; }
.stat label { font-size: 12px; color: #777; }
.stat-pending span { color: var(--pend); }
.stat-ok span { color: var(--ok); }
.stat-fail span { color: var(--fail); }

.progress-bar { height: 10px; background: #eee; border-radius: 6px; overflow: hidden; margin-bottom: 8px; }
.progress-fill { height: 100%; width: 0%; background: linear-gradient(90deg, #1a7f37, #2ea043); transition: width .4s ease; }

.tabla { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
.tabla th, .tabla td { text-align: left; padding: 7px 8px; border-bottom: 1px solid #f0f0f0; }
.tabla th { color: #777; font-weight: 600; font-size: 12px; text-transform: uppercase; }
.badge { padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 700; }
.badge-pendiente { background: #fff3d6; color: var(--pend); }
.badge-enviando { background: #e3ecff; color: #2f54c4; }
.badge-enviado { background: #e2f6e6; color: var(--ok); }
.badge-fallido { background: #fbe4e1; color: var(--fail); }

.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: #fbe4e1; color: #7a2018; border: 1px solid #f2c6c0; }
.alert-info { background: #e3ecff; color: #1c3a8a; border: 1px solid #cfe0ff; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { background: #fff; padding: 32px; border-radius: 12px; border: 1px solid var(--border); width: 100%; max-width: 340px; text-align: center; }
.login-logo { height: 60px; margin-bottom: 10px; }
.login-box h1 { font-size: 18px; margin: 4px 0 2px; }
.login-box .subtitle { color: #777; font-size: 13px; margin-bottom: 18px; }
.login-box form { flex-direction: column; align-items: stretch; text-align: left; }
.login-box label { font-size: 12px; color: #555; margin-top: 6px; }
.login-box button { margin-top: 14px; }

code { background: #f0f0f0; padding: 1px 5px; border-radius: 4px; font-size: 12px; }