:root {
  --bg: #0f172a;
  --panel: #ffffff;
  --panel-2: #f8fafc;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --ok: #16a34a;
  --ok-bg: #dcfce7;
  --err: #dc2626;
  --err-bg: #fee2e2;
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, #1e293b, #0f172a);
  min-height: 100vh;
}

.view { min-height: 100vh; }
[hidden] { display: none !important; }

/* ---------- Login ---------- */
#view-login {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.card {
  background: var(--panel);
  border-radius: 14px;
  padding: 32px;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow);
}

.login-card h1 { margin: 0 0 4px; font-size: 26px; }
.subtitle { color: var(--muted); margin: 0 0 20px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 14px 0 6px;
}
label small { font-weight: 400; color: var(--muted); }
.req { color: var(--err); }

input[type="text"], input[type="number"], input[type="email"], select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.code-input {
  font-size: 26px;
  letter-spacing: 10px;
  text-align: center;
  font-weight: 700;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  margin-top: 12px;
}
.checkbox input { width: auto; }

/* ---------- Botones ---------- */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.btn:hover { background: var(--panel-2); }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--text); background: rgba(0,0,0,0.04); }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.row-buttons { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* ---------- Mensajes ---------- */
.error {
  margin-top: 14px;
  color: var(--err);
  background: var(--err-bg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
}
.banner-ok {
  margin-top: 16px;
  color: var(--ok);
  background: var(--ok-bg);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
}
.hint { font-size: 12px; color: var(--muted); margin-top: 14px; }
.hint a { color: var(--primary); }

/* ---------- Spinner ---------- */
.spinner {
  width: 26px; height: 26px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 12px auto;
  animation: spin 0.8s linear infinite;
}
.spinner.large { width: 44px; height: 44px; border-width: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Shell del portal ---------- */
#view-app { background: #f1f5f9; display: flex; flex-direction: column; }
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--bg); color: #fff;
  padding: 12px 24px;
}
.brand { font-weight: 700; font-size: 18px; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.session-info { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.session-info .btn.ghost, .topbar-left .btn.ghost { color: #cbd5e1; }
.session-info .btn.ghost:hover, .topbar-left .btn.ghost:hover { color: #fff; background: rgba(255,255,255,0.1); }

.steps {
  display: flex; gap: 8px;
  padding: 14px 0;
  margin-bottom: 8px;
}
.step {
  font-size: 13px; font-weight: 600; color: var(--muted);
  padding: 6px 14px; border-radius: 20px; background: #fff;
  border: 1px solid var(--border); cursor: pointer;
}
.step.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.step.done { background: var(--ok-bg); color: var(--ok); }

.content { padding: 24px; max-width: 900px; width: 100%; margin: 0 auto; }
.step-panel h2 { margin-top: 0; }

/* ---------- Inicio / grillas de tarjetas ---------- */
.home { text-align: center; padding-top: 8px; }
.home h2 { color: #fff; }
.home-section {
  margin: 26px 0 0; font-size: 13px; text-transform: uppercase;
  letter-spacing: 1px; color: var(--muted);
}
#panel-herramientas .home-section { color: #94a3b8; }
.home-cards { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-top: 14px; }
.home-card {
  width: 320px; text-align: left; cursor: pointer;
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  padding: 24px; transition: all 0.15s;
}
.home-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-2px); }
.home-ico {
  width: 44px; height: 44px; border-radius: 10px; background: var(--primary);
  color: #fff; font-size: 26px; line-height: 44px; text-align: center; margin-bottom: 12px;
}
.home-ico.nav { background: #7c3aed; }
.home-title { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.home-desc { font-size: 13px; color: var(--muted); }

/* Dentro de una herramienta el inicio es sobre fondo claro */
#tool-root .home { text-align: center; }
#tool-root .home h2 { color: var(--text); }

/* ---------- Formularios / listas de la herramienta ---------- */
.context-bar {
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 14px; font-size: 14px; margin-bottom: 16px;
}
.context-bar b { color: var(--primary); }

.add-form {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; margin-bottom: 20px;
}
.add-form h3 { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 160px; gap: 14px; }

.lista { display: flex; flex-direction: column; gap: 12px; }
.pregunta-item {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px;
}
.pregunta-item.inactivo { opacity: 0.6; background: var(--panel-2); }
.pregunta-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.pregunta-head .titulo { font-weight: 600; }
.pregunta-actions { display: flex; gap: 6px; flex-shrink: 0; }
.badge {
  display: inline-block; font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 20px; background: var(--panel-2);
  color: var(--muted); margin-left: 6px;
}
.badge.id { background: #e0e7ff; color: #3730a3; }
.badge.tipo { background: #fef3c7; color: #92400e; }
.badge.estado-on { background: var(--ok-bg); color: var(--ok); }
.badge.estado-off { background: var(--err-bg); color: var(--err); }
.badge.reutilizado { background: #ede9fe; color: #6d28d9; }
.meta { font-size: 12px; color: var(--muted); margin-top: 4px; }

.respuestas-box { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border); }
.respuestas-box h4 { margin: 0 0 8px; font-size: 13px; color: var(--muted); }
.respuesta-row {
  display: flex; align-items: center; gap: 8px; font-size: 13px;
  padding: 6px 0;
}
.respuesta-row.inactivo { opacity: 0.55; }
.respuesta-row .desc { flex: 1; }
.respuesta-row .btn.small { padding: 3px 8px; font-size: 12px; }
.resp-add {
  display: grid; grid-template-columns: 1fr 90px auto; gap: 8px;
  margin-top: 10px; align-items: end;
}
.resp-add label { margin: 0 0 4px; }
.no-opciones { font-size: 12px; color: var(--muted); font-style: italic; margin-top: 10px; }

.attach-form { margin-top: 20px; }
.attach-row { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 6px 0; }
.attach-row .desc { flex: 1; }

/* ---------- Listbox de selección ---------- */
select[size] { padding: 0; }
select[size] option { padding: 8px 12px; border-bottom: 1px solid var(--panel-2); }
.count-hint { font-weight: 400; color: var(--muted); }

/* ---------- Resumen ---------- */
.resumen-head {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; margin-bottom: 16px; font-size: 15px;
}
.resumen-head .big-id { font-size: 22px; font-weight: 700; color: var(--primary); }
table.resumen { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; }
table.resumen th, table.resumen td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
table.resumen th { background: var(--panel-2); font-size: 12px; text-transform: uppercase; color: var(--muted); }
table.resumen tr.preg-row { background: #f8fafc; font-weight: 600; }
table.resumen tr.resp-row td:first-child { padding-left: 28px; color: var(--muted); }

/* ---------- Overlay de carga ---------- */
.loading-overlay {
  position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #fff; z-index: 100;
}
.loading-overlay p { font-weight: 600; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 10px 20px; border-radius: 8px;
  font-size: 14px; z-index: 200; box-shadow: var(--shadow);
}