/* ── Variables ─────────────────────────────────────────────────────────── */
:root {
  --color-primary: #2563eb;
  --color-danger:  #dc2626;
  --color-text:    #111827;
  --color-muted:   #6b7280;
  --color-border:  #e5e7eb;
  --color-bg:      #f9fafb;
  --radius:        6px;
  --space:         1rem;
}

/* ── Reset base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
}

/* ── Nav ────────────────────────────────────────────────────────────────── */
#main-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .25rem;
  padding: .5rem var(--space);
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

#main-nav a,
#main-nav button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: .75rem;
  color: var(--color-muted);
  text-decoration: none;
  padding: .35rem .6rem;
  border-radius: var(--radius);
  border: none;
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color .15s, background .15s;
}

#main-nav a:hover,
#main-nav button:hover,
#main-nav a.active {
  color: var(--color-primary);
  background: #eff6ff;
}

#main-nav button#btn-logout {
  margin-left: auto;
  color: var(--color-danger);
}
#main-nav button#btn-logout:hover { background: #fef2f2; }

@media (min-width: 768px) {
  #main-nav a, #main-nav button { flex-direction: row; font-size: .875rem; }
}

/* ── Main ───────────────────────────────────────────────────────────────── */
main {
  padding: var(--space);
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Banners ────────────────────────────────────────────────────────────── */
#banner-offline,
#banner-pwa {
  text-align: center;
  padding: .6rem var(--space);
  font-size: .875rem;
}

#banner-offline {
  background: #fef3c7;
  color: #92400e;
  border-bottom: 1px solid #fde68a;
}

#banner-pwa {
  background: #eff6ff;
  color: #1e40af;
  border-bottom: 1px solid #bfdbfe;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  flex-wrap: wrap;
}

/* ── Cards dashboard ────────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space);
  margin-bottom: calc(var(--space) * 1.5);
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space);
  text-align: center;
}

.card .card-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.card .card-label {
  font-size: .8rem;
  color: var(--color-muted);
  margin-top: .25rem;
}

/* ── Tablas ─────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
  background: #fff;
}

thead { background: var(--color-bg); }

th, td {
  padding: .6rem .75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

th { font-weight: 600; color: var(--color-muted); font-size: .75rem; text-transform: uppercase; }

tbody tr:hover { background: #f8faff; }

/* ── Formularios ────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .35rem; }

label { font-size: .875rem; font-weight: 500; }

input, select, textarea {
  padding: .5rem .75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  width: 100%;
  background: #fff;
  color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px #dbeafe;
}

textarea { resize: vertical; min-height: 80px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space);
}

@media (min-width: 768px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Botones ────────────────────────────────────────────────────────────── */
button, .btn-primary, .btn-danger, .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover { background: #1d4ed8; border-color: #1d4ed8; }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-bg); }

/* ── Estados ────────────────────────────────────────────────────────────── */
.activo   { color: #059669; font-weight: 600; }
.inactivo { color: var(--color-muted); }

/* ── Modal (dialog nativo) ──────────────────────────────────────────────── */
dialog {
  border: none;
  border-radius: calc(var(--radius) * 1.5);
  padding: 1.5rem;
  max-width: 560px;
  width: calc(100% - 2rem);
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
}

dialog::backdrop {
  background: rgba(0, 0, 0, .4);
  backdrop-filter: blur(2px);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space);
}

.modal-header h2 { font-size: 1.1rem; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: .5rem;
  margin-top: 1.25rem;
}

/* ── Login ──────────────────────────────────────────────────────────────── */
.login-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: var(--space);
  gap: 1.5rem;
}

.login-box {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  padding: 2rem;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: var(--space);
}

.login-box h1 { font-size: 1.5rem; text-align: center; color: var(--color-primary); }

.login-box .error-msg {
  color: var(--color-danger);
  font-size: .875rem;
  text-align: center;
  min-height: 1.25rem;
}

.login-box .btn-primary { width: 100%; justify-content: center; padding: .65rem; }

/* ── Toolbar de sección ─────────────────────────────────────────────────── */
.section-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: var(--space);
}

.section-toolbar h2 { font-size: 1.1rem; flex: 1; }

/* ── Filtros ────────────────────────────────────────────────────────────── */
.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: var(--space);
}

.filtros select, .filtros input { width: auto; flex: 1; min-width: 120px; }