/* ============================================================
   Panel WiFi Enterprise — sistema de diseño
   Concepto: "manifiesto de acceso" — una bitácora de red, no un
   admin genérico. Tipografía técnica (mono para DNIs/IPs/fechas),
   paleta ink/teal, y un motivo de "barras de señal" como firma
   visual recurrente (estado del servicio, viñetas, carga).
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --ink-950: #12161B;
  --ink-800: #1E242C;
  --ink-600: #3A4450;
  --ink-400: #6B7684;
  --paper-100: #F5F3EE;
  --paper-0: #FFFFFF;
  --line: #DFDAD0;
  --signal: #0F8B8D;
  --signal-dim: #0F8B8D22;
  --signal-strong: #0B6668;
  --amber: #C77D1F;
  --amber-dim: #C77D1F1a;
  --danger: #B23A2E;
  --danger-dim: #B23A2E1a;

  --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper-100);
  color: var(--ink-950);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: inherit; }

/* --- Firma visual: barras de señal --- */
.signal-mark {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 16px;
}
.signal-mark span {
  display: block;
  width: 3px;
  background: currentColor;
  border-radius: 1px;
}
.signal-mark span:nth-child(1) { height: 5px; }
.signal-mark span:nth-child(2) { height: 9px; }
.signal-mark span:nth-child(3) { height: 13px; }
.signal-mark span:nth-child(4) { height: 16px; }

/* --- Header --- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--ink-950);
  color: var(--paper-100);
  border-bottom: 3px solid var(--signal);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
}
.topbar .brand .signal-mark { color: var(--signal); }
.topbar .brand small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.topbar nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13.5px;
}
.topbar nav a {
  text-decoration: none;
  color: #C9CDD3;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.topbar nav a:hover, .topbar nav a.active {
  color: #fff;
  border-color: var(--signal);
}
.topbar .status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--signal);
  background: var(--signal-dim);
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid var(--signal);
}
.topbar .status-pill::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-dim);
}

/* --- Contenedor principal --- */
.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 32px 80px;
}

.page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}
.page-head h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}
.page-head .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-400);
  margin-bottom: 4px;
  display: block;
}

/* --- Tarjetas / paneles --- */
.panel {
  background: var(--paper-0);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 24px;
}
.panel h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

/* --- Formularios --- */
label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-600);
  margin-bottom: 6px;
}
input[type=text], input[type=password], input[type=file], input[type=date] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--paper-0);
  color: var(--ink-950);
}
input[type=text]:focus, input[type=password]:focus, input[type=date]:focus {
  outline: none;
  border-color: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-dim);
}
.field { margin-bottom: 16px; }
.field-row { display: flex; gap: 14px; }
.field-row .field { flex: 1; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 4px;
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: filter .12s, background .12s;
}
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: var(--signal-strong); }
.btn-ghost { background: transparent; color: var(--ink-600); border-color: var(--line); }
.btn-ghost:hover { background: var(--paper-100); }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-dim); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* --- Tabla tipo bitácora --- */
table.manifest {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.manifest th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-400);
  font-weight: 500;
  padding: 0 10px 10px;
  border-bottom: 1px solid var(--line);
}
table.manifest td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
table.manifest tr:last-child td { border-bottom: none; }
.dni {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.03em;
  background: var(--paper-100);
  padding: 2px 7px;
  border-radius: 3px;
}
.ts { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-400); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 3px;
}
.badge-on { background: var(--signal-dim); color: var(--signal-strong); }
.badge-on::before { content: '●'; font-size: 8px; }
.badge-off { background: var(--danger-dim); color: var(--danger); }
.badge-off::before { content: '●'; font-size: 8px; }

/* --- Flash messages --- */
.flash {
  padding: 12px 16px;
  border-radius: 5px;
  margin-bottom: 20px;
  font-size: 13.5px;
  border: 1px solid;
}
.flash-success { background: var(--signal-dim); border-color: var(--signal); color: var(--signal-strong); }
.flash-error { background: var(--danger-dim); border-color: var(--danger); color: var(--danger); }

/* --- Login --- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink-950);
  background-image:
    radial-gradient(circle at 20% 20%, #1E242C 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, #0F8B8D22 0%, transparent 45%);
}
.login-box {
  width: 360px;
  background: var(--paper-0);
  border-radius: 8px;
  padding: 40px 36px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.5);
}
.login-box .brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--signal);
}
.login-box .brand-lockup span.name {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink-950);
}
.login-box p.tagline {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-400);
  letter-spacing: 0.05em;
  margin: 0 0 28px;
  text-transform: uppercase;
}
.login-box .btn-primary { width: 100%; justify-content: center; margin-top: 6px; }

/* --- Diff de carga Excel --- */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
.diff-stat {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
  background: var(--paper-0);
}
.diff-stat .n {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
}
.diff-stat .label {
  font-size: 12px;
  color: var(--ink-400);
  margin-top: 6px;
}
.diff-stat.alta .n { color: var(--signal); }
.diff-stat.baja .n { color: var(--danger); }
.diff-stat.warn .n { color: var(--amber); }

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--ink-400);
}
.empty-state .signal-mark { opacity: .3; margin-bottom: 14px; }

.helptext { font-size: 12.5px; color: var(--ink-400); margin-top: 6px; }

/* --- Paginador de logs --- */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.pager-info {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-400);
}
table.manifest td small {
  color: var(--ink-400);
  font-size: 11px;
}

@media (max-width: 720px) {
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar { flex-direction: column; gap: 12px; align-items: flex-start; }
  .field-row { flex-direction: column; }
}