/* Estilos base: blanco y negro, moderno y elegante */
:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #6b6b6b;
  --accent: #111111; /* negro */
  --accent-hover: #2b2b2b; /* gris oscuro */
  --error: #cc0000; /* rojo elegante */
  --ok: #1f9d4a; /* verde para vigente */
  --shadow: 0 10px 25px rgba(0,0,0,0.08);
  --radius: 16px;
  --transition: 200ms ease;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--fg);
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.2px;
}

.link-admin {
  color: var(--fg);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition);
}
.link-admin:hover { opacity: 1; transform: translateY(-1px); }

.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 35px rgba(0,0,0,0.10);
}

.form-row { display: flex; gap: 12px; align-items: center; }
.input {
  flex: 1;
  padding: 14px 16px;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  outline: none;
  transition: border var(--transition), box-shadow var(--transition);
}
.input:focus {
  border-color: #d0d0d0;
  box-shadow: 0 0 0 6px rgba(0,0,0,0.04);
}

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 14px 18px;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); box-shadow: none; }

.helper { color: var(--muted); font-size: 0.95rem; margin-top: 8px; }

.result {
  margin-top: 18px;
  border: 1px solid #f0f0f0;
  border-radius: 12px;
  padding: 16px;
  opacity: 0;
  transform: translateY(6px);
  animation: fadeSlideIn 300ms ease forwards;
}

/* Bloques de resultado con fecha/estado */
.sep { border: none; border-top: 2px solid #e9eef2; margin: 12px 0; }
.sep.thin { border-top-width: 1px; }
.fecha-title { font-weight: 700; letter-spacing: 0.5px; color: #304050; text-transform: uppercase; }
.fecha-valor { font-size: 1.6rem; font-weight: 600; color: #2a2a2a; }
.status { margin-top: 8px; font-weight: 700; text-align: center; font-size: 1.25rem; }
.status-ok { color: var(--ok); }
.status-bad { color: var(--error); }
.disclaimer { margin-top: 8px; color: var(--muted); text-align: center; }
/* Un poco más pequeño */
.disclaimer { font-size: 0.9rem; }

.error {
  color: var(--error);
  background: #fff5f5;
}

.table th, .table td { text-align: left; padding: 12px; border-bottom: 1px solid #eee; }
.table th { font-weight: 600; opacity: 0.8; }

.inline-form { display: inline-block; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Tabla */
.table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.table th, .table td { text-align: left; padding: 12px; border-bottom: 1px solid #eee; }
.table th { font-weight: 600; opacity: 0.8; }

/* Responsive */
@media (max-width: 820px) {
  .container { padding: 18px; }
  .card { padding: 22px; }
}

@media (max-width: 640px) {
  .header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .brand { font-size: 1.1rem; }
  .form-row { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .input { width: 100%; }
  .table th, .table td { padding: 10px; }
  .table { font-size: 0.95rem; }
  .fecha-valor { font-size: 1.4rem; }
}