/* ─────────────────────────────────────────────────────────────────────────────
   AUDITECK v2 · PWA de conteo físico
   Hoja de estilos propia (sin Tailwind CDN) para garantizar funcionamiento
   offline desde la primera carga y un aspecto consistente en todo dispositivo.
   ───────────────────────────────────────────────────────────────────────────── */

:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-700: #1e40af;
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;

  --green: #16a34a;
  --green-100: #dcfce7;
  --green-50: #f0fdf4;

  --orange: #ea580c;
  --orange-100: #ffedd5;
  --orange-50: #fff7ed;

  --red: #dc2626;
  --red-100: #fee2e2;
  --red-50: #fef2f2;

  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, .12);
  --shadow-lg: 0 18px 45px rgba(15, 23, 42, .22);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; touch-action: manipulation; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
table { border-collapse: collapse; width: 100%; }
h1, h2, h3, h4, p { margin: 0; }

/* ── Utilidades ──────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.row { display: flex; align-items: center; gap: .5rem; }
.grow { flex: 1 1 auto; min-width: 0; }
.muted { color: var(--gray-500); }
.small { font-size: .75rem; }
.tiny { font-size: .68rem; }
.bold { font-weight: 700; }
.right { text-align: right; }
.center { text-align: center; }
.uppercase { text-transform: uppercase; letter-spacing: .04em; }

/* ── Páginas ─────────────────────────────────────────────────────────────── */
.page { display: none; min-height: 100vh; flex-direction: column; }
.page.active { display: flex; animation: fadeIn .22s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  border: 4px solid rgba(37, 99, 235, .15);
  border-left-color: var(--blue);
  width: 34px; height: 34px; border-radius: 50%;
  animation: spin .9s linear infinite;
}
.spinner.sm { width: 16px; height: 16px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

.spin-icon { animation: spin .9s linear infinite; }

/* ── Tarjetas / superficies ──────────────────────────────────────────────── */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}
.card + .card { margin-top: .875rem; }

/* ── Botones ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700; font-size: .95rem;
  transition: transform .08s ease, background .15s ease, opacity .15s ease;
  user-select: none;
}
.btn:active { transform: scale(.97); }
.btn[disabled] { opacity: .5; pointer-events: none; }

.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 4px 14px rgba(37, 99, 235, .3); }
.btn-primary:hover { background: var(--blue-dark); }

.btn-outline { background: #fff; border: 1px solid var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { background: var(--gray-50); }

.btn-ghost { background: transparent; color: var(--gray-600); }
.btn-danger { background: var(--red-50); color: var(--red); }
.btn-block { width: 100%; }
.btn-lg { padding: 1rem; font-size: 1.05rem; border-radius: var(--radius); }
.btn-sm { padding: .45rem .7rem; font-size: .8rem; border-radius: 8px; }

.scan-btn {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  color: #fff; box-shadow: 0 6px 18px rgba(37, 99, 235, .35);
}

/* ── Campos ──────────────────────────────────────────────────────────────── */
.field {
  width: 100%;
  padding: .9rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: #fff;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, .16); }
.field-soft { background: var(--gray-50); border: 1px solid var(--gray-200); }
.label { display: block; font-size: .68rem; font-weight: 800; color: var(--gray-400); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .35rem; }

/* ── Login ───────────────────────────────────────────────────────────────── */
#login-page { align-items: center; justify-content: center; padding: 1.5rem; background: #fff; }
.login-box { width: 100%; max-width: 24rem; text-align: center; }
.login-logo {
  width: 74px; height: 74px; margin: 0 auto 1rem; border-radius: 20px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-700) 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .35);
  color: #fff;
}
.login-title { font-size: 1.7rem; font-weight: 800; color: var(--gray-900); letter-spacing: -.02em; }
.login-sub { color: var(--gray-500); margin: .25rem 0 1.75rem; }
.login-box form { display: flex; flex-direction: column; gap: .75rem; }

/* ── Avisos / alerts ─────────────────────────────────────────────────────── */
.alert {
  border-radius: var(--radius-sm);
  padding: .75rem .9rem;
  font-size: .85rem;
  line-height: 1.4;
  margin-top: .75rem;
  display: flex; gap: .5rem; align-items: flex-start;
}
.alert-error { background: var(--red-50); color: #991b1b; border: 1px solid var(--red-100); }
.alert-warn { background: var(--orange-50); color: #9a3412; border: 1px solid var(--orange-100); }
.alert-info { background: var(--blue-50); color: var(--blue-700); border: 1px solid var(--blue-100); }
.alert-ok { background: var(--green-50); color: #166534; border: 1px solid var(--green-100); }

/* ── Cabeceras ───────────────────────────────────────────────────────────── */
.app-header {
  position: sticky; top: 0; z-index: 20;
  background: #fff; box-shadow: var(--shadow);
  padding: .8rem 1rem;
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
}
.app-header h2 { font-size: 1.1rem; font-weight: 800; color: var(--gray-900); }

.count-header {
  position: sticky; top: 0; z-index: 20;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-700) 100%);
  color: #fff; padding: .6rem .75rem;
  padding-top: calc(.6rem + env(safe-area-inset-top, 0px));
}
.count-header .ch-top { display: flex; align-items: flex-start; gap: .5rem; }
.count-header .ch-title { text-align: center; flex: 1; min-width: 0; }
.count-header .ch-company { font-size: .8rem; font-weight: 800; text-transform: uppercase; line-height: 1.2; }
.count-header .ch-branch { font-size: .72rem; opacity: .92; }
.count-header .ch-meta { display: flex; justify-content: center; gap: 1rem; font-size: .66rem; opacity: .9; margin-top: .3rem; border-top: 1px solid rgba(255,255,255,.22); padding-top: .3rem; }
.icon-btn { padding: .35rem; border-radius: 10px; display: inline-flex; position: relative; }
.icon-btn:hover { background: rgba(255,255,255,.14); }

/* ── Badges / píldoras ───────────────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .66rem; font-weight: 800;
  padding: .15rem .5rem; border-radius: 999px; white-space: nowrap;
}
.pill-online { background: var(--green-100); color: #166534; }
.pill-offline { background: var(--gray-200); color: var(--gray-600); }
.pill-syncing { background: var(--blue-100); color: var(--blue-700); }
.pill-pending { background: var(--orange-100); color: #9a3412; }
.pill-synced { background: var(--green-100); color: #166534; }
.pill-count { background: var(--blue-100); color: var(--blue-700); }

/* indicador de conexión sobre cabecera azul */
.conn-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.conn-online { background: #4ade80; }
.conn-offline { background: #cbd5e1; }
.conn-syncing { background: #93c5fd; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

.sync-btn { position: relative; }
.sync-btn .badge {
  position: absolute; top: -.3rem; right: -.3rem;
  min-width: 1.15rem; height: 1.15rem; padding: 0 .25rem;
  background: var(--red); color: #fff; font-size: .65rem; font-weight: 800;
  border-radius: 999px; display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--blue-dark);
}

/* ── Banner offline ──────────────────────────────────────────────────────── */
#offline-banner {
  background: var(--gray-800); color: #fff;
  font-size: .78rem; font-weight: 600;
  padding: .45rem .85rem; text-align: center;
  display: flex; align-items: center; justify-content: center; gap: .4rem;
}

/* ── Stats ───────────────────────────────────────────────────────────────── */
.stats-panel { background: #fff; box-shadow: var(--shadow); padding: .85rem 1rem; }
.stats-inner { display: flex; align-items: center; gap: 1rem; }

.donut {
  width: 76px; height: 76px; border-radius: 50%; flex: 0 0 auto;
  background: conic-gradient(var(--gray-200) 0 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  transition: background .3s ease;
}
.donut::after {
  content: ''; position: absolute; inset: 9px; background: #fff; border-radius: 50%;
}
.donut-center { position: relative; z-index: 1; text-align: center; line-height: 1.05; }
.donut-center strong { display: block; font-size: 1.15rem; font-weight: 800; color: var(--gray-900); }
.donut-center span { font-size: .58rem; color: var(--gray-400); text-transform: uppercase; letter-spacing: .05em; }

.stats-grid { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.stat { border-radius: var(--radius-sm); padding: .5rem; text-align: center; }
.stat strong { display: block; font-size: 1.15rem; font-weight: 800; }
.stat span { font-size: .6rem; color: var(--gray-500); text-transform: uppercase; letter-spacing: .04em; }
.stat-green { background: var(--green-50); }
.stat-green strong { color: var(--green); }
.stat-orange { background: var(--orange-50); }
.stat-orange strong { color: var(--orange); }
.stat-blue { background: var(--blue-50); }
.stat-blue strong { color: var(--blue); }

/* ── Contenido desplazable ───────────────────────────────────────────────── */
.scroll-area { flex: 1; overflow-y: auto; padding: 1rem; padding-bottom: calc(6rem + var(--safe-b)); -webkit-overflow-scrolling: touch; }

/* ── Inventarios ─────────────────────────────────────────────────────────── */
.tabs { display: flex; background: #fff; padding: .25rem; border-radius: var(--radius-sm); box-shadow: var(--shadow); gap: .25rem; }
.tab { flex: 1; padding: .55rem; font-size: .85rem; font-weight: 700; border-radius: 8px; color: var(--gray-500); }
.tab.active { background: var(--blue-100); color: var(--blue-700); }

.inv-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  border-left: 4px solid var(--blue);
  padding: 1rem; margin-top: .75rem;
}
.inv-card.current { border-left-color: var(--green); box-shadow: 0 0 0 2px var(--green-100), var(--shadow); }
.inv-card.locked { opacity: .5; }
.inv-card h3 { font-size: 1.05rem; font-weight: 800; color: var(--gray-900); }
.inv-card .company { font-size: .7rem; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .55rem; }
.inv-meta { display: grid; grid-template-columns: 1fr 1fr; gap: .3rem .75rem; font-size: .75rem; color: var(--gray-600); background: var(--gray-50); border: 1px solid var(--gray-100); border-radius: var(--radius-sm); padding: .55rem .7rem; }
.inv-meta .full { grid-column: 1 / -1; }
.inv-meta .k { color: var(--gray-400); }
.inv-meta .v { font-weight: 600; }

/* ── Tablas ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--gray-100); border-radius: var(--radius-sm); }
table.data { font-size: .82rem; }
table.data thead th {
  background: var(--gray-50); color: var(--gray-500);
  font-size: .66rem; text-transform: uppercase; letter-spacing: .05em; font-weight: 800;
  text-align: left; padding: .5rem .6rem; white-space: nowrap;
}
table.data tbody td { padding: .55rem .6rem; border-top: 1px solid var(--gray-100); }
table.data tbody tr:hover { background: var(--blue-50); }
table.data .num { text-align: right; font-weight: 800; color: var(--blue); }
.row-click { cursor: pointer; }
.loc-name { font-weight: 800; color: var(--gray-800); }

.pager { display: flex; align-items: center; justify-content: space-between; font-size: .75rem; color: var(--gray-600); margin-top: .65rem; gap: .5rem; }

/* ── Escáner ─────────────────────────────────────────────────────────────── */
.active-loc {
  background: var(--blue-50); border: 1px solid var(--blue-100);
  border-radius: var(--radius-sm); padding: .7rem .85rem;
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
}
.active-loc .lbl { font-size: .66rem; font-weight: 800; color: var(--blue-400, #60a5fa); text-transform: uppercase; letter-spacing: .06em; }
.active-loc .val { font-size: 1.25rem; font-weight: 900; color: var(--blue-700); letter-spacing: -.01em; }

.scan-card { background: #fff; border: 2px solid var(--blue); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 1rem; margin-top: .875rem; }
#qr-reader { width: 100%; overflow: hidden; border-radius: var(--radius-sm); border: 2px dashed var(--blue-200); margin-bottom: .75rem; }
#qr-reader video { width: 100% !important; border-radius: var(--radius-sm); }
.scan-fields { display: flex; gap: .5rem; align-items: flex-end; }
.scan-fields .qty { width: 84px; }
.input-sku { position: relative; }
.input-sku .cam-btn {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  background: var(--blue-100); color: var(--blue); padding: .5rem; border-radius: 9px;
}
.input-sku .cam-btn:hover { background: var(--blue-200); }
.input-sku input { padding-right: 3rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 1.05rem; font-weight: 700; }

.product-info { margin-top: .6rem; background: var(--blue-50); border: 1px solid var(--blue-100); color: var(--blue-700); border-radius: var(--radius-sm); padding: .55rem .7rem; font-size: .78rem; }
.product-info.unknown { background: var(--orange-50); border-color: var(--orange-100); color: #9a3412; }

/* ── FAB / menú herramientas ─────────────────────────────────────────────── */
.fab { position: fixed; right: 1.25rem; bottom: calc(1.25rem + var(--safe-b)); z-index: 30; }
.fab > button { width: 54px; height: 54px; border-radius: 50%; background: var(--gray-800); color: #fff; box-shadow: var(--shadow-lg); display: flex; align-items: center; justify-content: center; }
.tools-menu {
  position: fixed; right: 1.25rem; bottom: calc(5.25rem + var(--safe-b)); z-index: 30;
  background: #fff; border: 1px solid var(--gray-100); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: .4rem; width: 13rem;
}
.tools-menu button { display: flex; align-items: center; gap: .6rem; width: 100%; padding: .7rem .75rem; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; text-align: left; }
.tools-menu button:hover { background: var(--gray-50); }
.tools-menu .danger { color: var(--red); }

/* ── Modales ─────────────────────────────────────────────────────────────── */
.overlay {
  position: fixed; inset: 0; z-index: 9998;
  background: rgba(15, 23, 42, .58);
  display: flex; align-items: center; justify-content: center; padding: 1rem;
  animation: fadeIn .15s ease;
}
.modal {
  background: #fff; border-radius: 1.1rem; padding: 1.6rem 1.4rem;
  width: 100%; max-width: 21rem; box-shadow: var(--shadow-lg); text-align: center;
}
.modal .m-icon { font-size: 2.4rem; line-height: 1; margin-bottom: .4rem; }
.modal h3 { font-size: 1.1rem; font-weight: 800; color: var(--gray-900); }
.modal p { font-size: .88rem; color: var(--gray-500); line-height: 1.5; margin-top: .45rem; }
.modal .m-actions { display: flex; gap: .6rem; margin-top: 1.35rem; }
.modal .m-actions .btn { flex: 1; }
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin-top: 1.2rem; }
.summary-box { border-radius: var(--radius-sm); padding: .8rem; }
.summary-box strong { display: block; font-size: 1.9rem; font-weight: 900; line-height: 1; }
.summary-box span { font-size: .62rem; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: .05em; }

/* ── Toasts ──────────────────────────────────────────────────────────────── */
#toast-container { position: fixed; top: calc(.75rem + env(safe-area-inset-top, 0px)); left: .75rem; right: .75rem; z-index: 9999; display: flex; flex-direction: column; gap: .5rem; pointer-events: none; }
.toast {
  display: flex; align-items: flex-start; gap: .6rem;
  background: var(--gray-900); color: #fff;
  border-radius: var(--radius-sm); padding: .75rem .85rem;
  box-shadow: var(--shadow-lg); font-size: .85rem; line-height: 1.35;
  animation: toastIn .2s ease;
  pointer-events: auto;
}
.toast-error { background: #b91c1c; }
.toast-ok { background: #15803d; }
.toast-warn { background: #c2410c; }
.toast-info { background: var(--gray-900); }
.toast .t-close { margin-left: auto; opacity: .7; font-weight: 800; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ── Estado vacío ────────────────────────────────────────────────────────── */
.empty { text-align: center; padding: 2.5rem 1rem; color: var(--gray-400); }
.empty .e-icon { font-size: 2rem; margin-bottom: .5rem; }

/* ── Barra de progreso de sync ───────────────────────────────────────────── */
.sync-progress { height: 4px; background: var(--blue-100); border-radius: 999px; overflow: hidden; margin-top: .5rem; }
.sync-progress > i { display: block; height: 100%; background: var(--blue); width: 0; transition: width .3s ease; }