/* ============================================================
   Inventario de Teléfonos — tema moderno
   ============================================================ */
:root {
  --p1: #4f46e5;            /* índigo */
  --p2: #7c3aed;            /* violeta */
  --p3: #06b6d4;            /* cian (acento) */
  --grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #a855f7 100%);
  --grad-suave: linear-gradient(135deg, #eef2ff, #f5f3ff);
  --fondo: #f3f4f8;
  --tarjeta: #ffffff;
  --texto: #111827;
  --texto-2: #6b7280;
  --borde: #e5e7eb;
  --peligro: #ef4444;
  --ok: #10b981;
  --aviso: #f59e0b;
  --wa: #22c55e;
  --radio: 18px;
  --radio-s: 12px;
  --sombra: 0 1px 2px rgba(17, 24, 39, .04), 0 8px 24px -8px rgba(79, 70, 229, .15);
  --sombra-hover: 0 4px 12px rgba(17, 24, 39, .06), 0 16px 40px -12px rgba(79, 70, 229, .28);
  --trans: .22s cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 15px;
  line-height: 1.45;
}
body { padding-bottom: 88px; min-height: 100vh; }
body::before {
  /* halo de color detrás de la cabecera */
  content: ""; position: fixed; inset: -40% -20% auto; height: 60vh; z-index: -1;
  background: radial-gradient(60% 60% at 30% 30%, rgba(124, 58, 237, .16), transparent 70%),
              radial-gradient(50% 50% at 80% 20%, rgba(6, 182, 212, .14), transparent 70%);
  pointer-events: none;
}

/* ---------- animaciones ---------- */
@keyframes subir { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes aparecer { from { opacity: 0; } to { opacity: 1; } }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 18px) scale(.96); } to { opacity: 1; transform: translate(-50%, 0) scale(1); } }
@keyframes pulso { 0%, 100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, .45); } 70% { box-shadow: 0 0 0 12px rgba(79, 70, 229, 0); } }
@keyframes girar { to { transform: rotate(360deg); } }
@keyframes flotar { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(30px, -40px) scale(1.08); } }
@keyframes sacudir { 10%, 90% { transform: translateX(-2px); } 20%, 80% { transform: translateX(4px); } 30%, 50%, 70% { transform: translateX(-6px); } 40%, 60% { transform: translateX(6px); } }
@keyframes brillo { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ---------- cabecera ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--grad); color: #fff;
  padding-top: env(safe-area-inset-top);
  box-shadow: 0 10px 30px -12px rgba(79, 70, 229, .55);
}
.topbar-inner { max-width: 1100px; margin: 0 auto; padding: 12px 18px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.marca-app { display: flex; align-items: center; gap: 12px; }
.logo-mini { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; font-size: 22px; background: rgba(255, 255, 255, .18); backdrop-filter: blur(8px); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .25); }
.topbar h1 { margin: 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -.01em; line-height: 1.1; }
.topbar small { opacity: .85; font-size: .78rem; font-weight: 500; }
.topbar-acciones { display: flex; align-items: center; gap: 8px; }
.badge { font-size: .72rem; font-weight: 600; background: rgba(255, 255, 255, .18); padding: 5px 10px; border-radius: 999px; display: inline-flex; align-items: center; gap: 6px; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 8px #4ade80; }
.badge.offline { background: rgba(245, 158, 11, .9); color: #1f2937; }
.badge.offline::before { background: #7c2d12; box-shadow: none; }
.btn-icono { border: 0; background: rgba(255, 255, 255, .16); color: #fff; width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; cursor: pointer; transition: background var(--trans), transform var(--trans); }
.btn-icono:hover { background: rgba(255, 255, 255, .28); }
.btn-icono:active { transform: scale(.94); }

/* ---------- estructura ---------- */
main { padding: 18px 16px; max-width: 1100px; margin: 0 auto; }
.tab { display: none; }
.tab.activa { display: block; animation: subir .35s var(--trans) both; }

.tarjeta {
  background: var(--tarjeta); border-radius: var(--radio); padding: 18px;
  box-shadow: var(--sombra); border: 1px solid rgba(229, 231, 235, .8);
  margin-bottom: 16px; transition: box-shadow var(--trans), transform var(--trans);
}
.tarjeta-titulo { margin-bottom: 14px; }
.tarjeta-titulo h2 { margin: 0 0 4px; font-size: 1.05rem; font-weight: 700; letter-spacing: -.01em; }
.tarjeta-titulo p { margin: 0; color: var(--texto-2); font-size: .85rem; }
.ayuda { color: var(--texto-2); font-size: .83rem; margin: 8px 0 0; }

/* ---------- botones ---------- */
.btn {
  border: 1px solid var(--borde); background: #fff; color: var(--texto);
  padding: 11px 16px; border-radius: var(--radio-s); font: inherit; font-weight: 600; font-size: .92rem;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans), border-color var(--trans);
}
.btn:hover { border-color: #c7d2fe; box-shadow: 0 6px 16px -8px rgba(79, 70, 229, .35); transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.97); }
.btn.primario { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 8px 20px -8px rgba(79, 70, 229, .6); }
.btn.primario:hover { box-shadow: 0 12px 26px -8px rgba(79, 70, 229, .7); filter: brightness(1.05); }
.btn.secundario { background: #eef2ff; border-color: #e0e7ff; color: #4338ca; }
.btn.secundario:hover { background: #e0e7ff; }
.btn.grande { flex: 1; padding: 15px; font-size: 1.02rem; border-radius: 14px; }
.btn.peligro { color: var(--peligro); }
.btn.peligro:hover { background: #fef2f2; border-color: #fecaca; box-shadow: none; }
.btn.chico { padding: 6px 9px; font-size: .82rem; border-radius: 9px; }
.btn.whatsapp { background: var(--wa); border-color: transparent; color: #fff; box-shadow: 0 8px 20px -8px rgba(34, 197, 94, .6); }
.btn.whatsapp:hover { filter: brightness(1.05); }
.btn.chico.whatsapp { background: #ecfdf5; color: #059669; border-color: #d1fae5; box-shadow: none; }
.btn:disabled { opacity: .55; pointer-events: none; }
.btn.cargando .txt { visibility: hidden; }
.btn .spinner { position: absolute; width: 20px; height: 20px; border: 3px solid rgba(255, 255, 255, .4); border-top-color: #fff; border-radius: 50%; animation: girar .7s linear infinite; }
.btn.cargando .spinner { display: block !important; }
.btn.cargando { position: relative; }

/* ---------- escáner ---------- */
#lector { width: 100%; max-width: 480px; margin: 0 auto 12px; border-radius: 14px; overflow: hidden; background: #0f172a; }
#lector:empty { display: none; }
#lector video { width: 100% !important; display: block; }
.scanner-acciones { display: flex; gap: 8px; flex-wrap: wrap; }
#btn-escanear { animation: pulso 2.4s infinite; }

/* ---------- formulario ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.grid label { display: flex; flex-direction: column; font-size: .8rem; font-weight: 600; color: var(--texto-2); gap: 6px; }
.grid label.ancho { grid-column: 1 / -1; }
.grid input, .grid select, .grid textarea {
  font: inherit; font-weight: 500; color: var(--texto); padding: 11px 13px;
  border: 1.5px solid var(--borde); border-radius: var(--radio-s); background: #fafafa;
  transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
  width: 100%;
}
.grid select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%236b7280' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.grid input:hover, .grid select:hover, .grid textarea:hover { border-color: #c7d2fe; }
.grid input:focus, .grid select:focus, .grid textarea:focus { outline: none; border-color: var(--p1); background: #fff; box-shadow: 0 0 0 4px rgba(79, 70, 229, .12); }
.grid input::placeholder, .grid textarea::placeholder { color: #b6bcc8; font-weight: 400; }
input[name="imei1"], input[name="imei2"] { font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace; letter-spacing: 2px; font-size: 1.08rem; }
input.valido { border-color: var(--ok) !important; background: #f0fdf4 !important; }
input.invalido { border-color: var(--peligro) !important; }
.validacion { font-size: .74rem; font-weight: 500; min-height: 1em; }
.validacion.err { color: var(--aviso); }
.validacion.ok { color: var(--ok); }
.form-acciones { display: flex; gap: 10px; margin-top: 16px; }

.info-telefono {
  margin-bottom: 14px; padding: 12px 14px; border-radius: var(--radio-s); font-size: .9rem;
  background: var(--grad-suave); color: #3730a6; border: 1px solid #e0e7ff; animation: subir .3s var(--trans) both;
}
.info-telefono.ok { background: linear-gradient(135deg, #ecfdf5, #f0fdfa); color: #065f46; border-color: #a7f3d0; }
.info-telefono.aviso { background: linear-gradient(135deg, #fffbeb, #fff7ed); color: #92400e; border-color: #fde68a; }
.info-telefono b { font-weight: 700; }

/* ---------- inventario ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.stat {
  background: var(--grad); color: #fff; border-radius: var(--radio); padding: 16px 14px;
  display: flex; flex-direction: column; gap: 2px; position: relative; overflow: hidden;
  box-shadow: 0 12px 28px -12px rgba(79, 70, 229, .6); animation: subir .4s var(--trans) both;
}
.stat:nth-child(2) { background: linear-gradient(135deg, #0ea5e9, #06b6d4); box-shadow: 0 12px 28px -12px rgba(6, 182, 212, .6); animation-delay: .05s; }
.stat:nth-child(3) { background: linear-gradient(135deg, #f59e0b, #f97316); box-shadow: 0 12px 28px -12px rgba(249, 115, 22, .6); animation-delay: .1s; }
.stat::after { content: ""; position: absolute; right: -20px; top: -20px; width: 90px; height: 90px; border-radius: 50%; background: rgba(255, 255, 255, .15); }
.stat-num { font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.stat-txt { font-size: .75rem; font-weight: 600; opacity: .9; }

.barra-inventario { display: flex; gap: 8px; flex-wrap: wrap; }
.buscador-wrap { flex: 1; min-width: 200px; position: relative; display: flex; align-items: center; }
.buscador-wrap svg { position: absolute; left: 13px; color: #9ca3af; pointer-events: none; }
.buscador-wrap input {
  width: 100%; font: inherit; font-weight: 500; padding: 11px 13px 11px 40px;
  border: 1.5px solid var(--borde); border-radius: var(--radio-s); background: #fafafa; transition: border-color var(--trans), box-shadow var(--trans);
}
.buscador-wrap input:focus { outline: none; border-color: var(--p1); background: #fff; box-shadow: 0 0 0 4px rgba(79, 70, 229, .12); }

.tabla-wrap { overflow-x: auto; margin-top: 12px; border-radius: 14px; border: 1px solid var(--borde); }
table { width: 100%; border-collapse: collapse; font-size: .86rem; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid #f1f2f5; white-space: nowrap; }
th { background: #f8f9fc; color: var(--texto-2); font-weight: 700; font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; position: sticky; top: 0; }
tbody tr { animation: aparecer .3s both; transition: background var(--trans); }
tbody tr:hover { background: #fafbff; }
tbody tr:last-child td { border-bottom: 0; }
td.imei { font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 600; letter-spacing: .5px; }
tr.pendiente td { background: #fffbeb; }
.etiqueta { padding: 3px 10px; border-radius: 999px; font-size: .72rem; font-weight: 700; background: #e5e7eb; text-transform: capitalize; }
.etiqueta.nuevo { background: #dcfce7; color: #166534; }
.etiqueta.usado { background: #fef3c7; color: #92400e; }
.etiqueta.reacondicionado { background: #dbeafe; color: #1e40af; }
td.editable { cursor: pointer; position: relative; }
td.editable:hover { background: #eef2ff; }
td.editable .vacio, td .vacio { color: #a1a1aa; font-style: italic; font-size: .78rem; }
input.inline { width: 120px; font: inherit; padding: 6px 8px; border: 1.5px solid var(--p1); border-radius: 8px; box-shadow: 0 0 0 3px rgba(79, 70, 229, .15); }
input.inline.ancha { width: 180px; }

/* ---------- navegación inferior ---------- */
.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; gap: 6px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid rgba(229, 231, 235, .8); box-shadow: 0 -8px 30px -12px rgba(17, 24, 39, .15);
}
.tabs button {
  flex: 1; border: 0; background: none; padding: 9px 10px; border-radius: 14px; font: inherit; font-weight: 600; font-size: .82rem;
  color: var(--texto-2); cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 3px;
  transition: background var(--trans), color var(--trans), transform var(--trans);
}
.tabs button:active { transform: scale(.96); }
.tabs button.activa { color: var(--p1); background: #eef2ff; }
.tabs button svg { transition: transform var(--trans); }
.tabs button.activa svg { transform: translateY(-1px); }
.pill { background: var(--p1); color: #fff; border-radius: 999px; padding: 1px 7px; font-size: .7rem; margin-left: 2px; }
.pill:empty { display: none; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%); z-index: 50;
  background: #111827; color: #fff; padding: 12px 18px; border-radius: 14px; font-size: .9rem; font-weight: 500;
  max-width: min(92vw, 520px); box-shadow: 0 16px 40px -12px rgba(0, 0, 0, .5); animation: toastIn .3s var(--trans) both;
}
.toast.error { background: linear-gradient(135deg, #ef4444, #dc2626); }
.toast.ok { background: linear-gradient(135deg, #10b981, #059669); }

/* ============================================================
   Login
   ============================================================ */
.pagina-login {
  min-height: 100vh; display: grid; place-items: center; padding: 24px 16px;
  background: linear-gradient(135deg, #312e81 0%, #4f46e5 40%, #7c3aed 75%, #0ea5e9 120%);
  overflow: hidden; position: relative;
}
.pagina-login::before { display: none; }
.fondo-login { position: absolute; inset: 0; overflow: hidden; z-index: 0; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55; animation: flotar 14s ease-in-out infinite; }
.blob.b1 { width: 380px; height: 380px; background: #a855f7; top: -120px; left: -90px; }
.blob.b2 { width: 320px; height: 320px; background: #06b6d4; bottom: -100px; right: -60px; animation-delay: -5s; }
.blob.b3 { width: 260px; height: 260px; background: #f472b6; bottom: 20%; left: 10%; animation-delay: -9s; }

.login-card {
  position: relative; z-index: 1; width: 100%; max-width: 400px;
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-radius: 26px; padding: 34px 28px 22px;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(255, 255, 255, .6);
  animation: subir .5s var(--trans) both;
}
.login-card.sacudir { animation: sacudir .5s both; }
.login-card.salida { transition: all .35s var(--trans); opacity: 0; transform: translateY(-16px) scale(.98); }
.login-logo { text-align: center; margin-bottom: 26px; }
.logo-icono {
  width: 74px; height: 74px; margin: 0 auto 12px; border-radius: 22px; display: grid; place-items: center; font-size: 36px;
  background: var(--grad); box-shadow: 0 16px 34px -12px rgba(79, 70, 229, .75);
}
.login-logo h1 { margin: 0; font-size: 1.6rem; font-weight: 800; letter-spacing: -.02em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.login-logo p { margin: 4px 0 0; color: var(--texto-2); font-size: .88rem; }

.campo { display: block; margin-bottom: 14px; font-size: .8rem; font-weight: 600; color: var(--texto-2); }
.campo > span { display: block; margin-bottom: 6px; }
.campo-input { position: relative; display: flex; align-items: center; }
.campo-input svg { position: absolute; left: 14px; color: #9ca3af; pointer-events: none; transition: color var(--trans); }
.campo-input input {
  width: 100%; font: inherit; font-weight: 500; font-size: 1rem; padding: 13px 44px 13px 44px;
  border: 1.5px solid var(--borde); border-radius: 14px; background: #fafafa; color: var(--texto);
  transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
}
.campo-input input:focus { outline: none; border-color: var(--p1); background: #fff; box-shadow: 0 0 0 4px rgba(79, 70, 229, .14); }
.campo-input input:focus + .ver-clave, .campo-input:focus-within svg { color: var(--p1); }
.ver-clave { position: absolute; right: 8px; border: 0; background: none; font-size: 1.05rem; padding: 6px 8px; cursor: pointer; border-radius: 8px; opacity: .6; transition: opacity var(--trans), background var(--trans); }
.ver-clave:hover { opacity: 1; background: #eef2ff; }
.login-error { margin: 0 0 12px; padding: 10px 12px; border-radius: 10px; background: #fef2f2; color: #b91c1c; font-size: .85rem; font-weight: 500; border: 1px solid #fecaca; animation: subir .25s both; }
#btn-entrar { width: 100%; margin-top: 4px; }
.login-pie { text-align: center; margin: 18px 0 0; color: #9ca3af; font-size: .75rem; }

/* ---------- responsive ---------- */
@media (max-width: 600px) {
  main { padding: 14px 12px; }
  .tarjeta { padding: 14px; border-radius: 16px; }
  .stats { gap: 8px; }
  .stat { padding: 12px 10px; }
  .stat-num { font-size: 1.2rem; }
  .stat-txt { font-size: .68rem; }
  .barra-inventario .btn { flex: 1; }
  .form-acciones { flex-direction: column; }
  .form-acciones .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- utilidades ---------- */
[hidden] { display: none !important; }

/* ---------- tabla como tarjetas en móvil ---------- */
@media (max-width: 700px) {
  .tabla-wrap { border: 0; overflow: visible; }
  table, tbody { display: block; }
  thead { display: none; }
  tbody tr {
    display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px;
    padding: 14px; margin-bottom: 12px; border-radius: 16px;
    background: #fff; border: 1px solid var(--borde); box-shadow: var(--sombra);
  }
  tbody tr td { display: block; padding: 0; border: 0; white-space: normal; font-size: .88rem; }
  tbody tr td::before { content: attr(data-th); display: block; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--texto-2); margin-bottom: 1px; }
  tbody tr td.imei { grid-column: 1 / -1; font-size: 1rem; padding-bottom: 6px; border-bottom: 1px dashed var(--borde); margin-bottom: 4px; }
  tbody tr td.acciones { grid-column: 1 / -1; display: flex; gap: 8px; margin-top: 6px; }
  tbody tr td.acciones::before { display: none; }
  tbody tr td.acciones .btn { flex: 1; padding: 9px; font-size: .9rem; }
  tbody tr td.editable { background: #f8f9ff; border-radius: 10px; padding: 8px 10px; }
  tbody tr td[colspan] { grid-column: 1 / -1; text-align: center; }
  tbody tr td[colspan]::before { display: none; }
  input.inline, input.inline.ancha { width: 100%; }
}