/* ==========================================================================
   Monitor de Medios — Sistema visual base (dark premium neutro)
   Contrato: docs/DISENO_PANEL.md §1 (tokens) · §2 (layout) · §3 (componentes)
   Rediseño Fase 1 (fundaciones): superficies por luminancia, bordes hairline,
   texto off-white, tipografía Inter self-hosteada, tabular-nums, motion tokens.
   Todas las vistas heredan de aquí. La tipografía se sirve desde /static/fonts
   (same-origin), permitida por `font-src 'self'` — no toca la CSP de nginx.
   Arquitectura por capas @layer: la Fase 2 mueve componentes/utilidades a sus
   capas; hoy todo el CSS vive en `base` (los `style=""` inline siempre ganan,
   así que envolver en capas no cambia nada visualmente todavía).
   ========================================================================== */

/* Inter variable (latin, eje wght) — un solo woff2, ~48KB. */
@font-face {
  font-family: "Inter";
  src: url("/static/fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@layer tokens, base, components, utilities;

@layer tokens {
  :root {
    /* ---- Superficies (capas por luminancia, no sombras) ---- */
    --bg:        #0a0a0c;   /* canvas de la app (casi-negro tibio) */
    --surface-1: #141416;   /* tarjetas / paneles / sidebar */
    --surface-2: #1c1c20;   /* elevado / hover / dropdown */
    --surface-3: #232327;   /* overlay: modal / popover / tooltip */

    /* Alias heredados: TODAS las vistas actuales siguen usando --panel/--panel-2.
       Apuntan a las superficies nuevas → upgrade automático sin tocar plantillas. */
    --panel:   var(--surface-1);
    --panel-2: var(--surface-2);
    --surface: var(--surface-1);

    /* ---- Bordes hairline (blanco a baja alpha, no gris sólido) ---- */
    --border:        rgba(255, 255, 255, .08);   /* divisores, filas, cards */
    --border-strong: rgba(255, 255, 255, .14);   /* inputs, foco, separación */

    /* ---- Texto (off-white, 3 niveles — nunca #fff puro) ---- */
    --text:  #ededf0;   /* ~92% — títulos, KPIs */
    --muted: #a1a1aa;   /* ~66% — etiquetas, secundario */
    --faint: #6b6b74;   /* ~45% — ejes, captions, guías */

    /* ---- Acento (un solo acento + tinte para hover/focus) ---- */
    --accent:       #4d9dff;   /* azul premium (más claro sobre fondo oscuro) */
    --accent-2:     #22d3ee;   /* cian secundario (series/charts) */
    --primary:       var(--accent);
    --primary-hover: #3a86f0;
    --accent-quiet: color-mix(in srgb, var(--accent) 16%, transparent);

    /* ---- Semánticos (valores estables: hay hardcodes inline que dependen de
       estos hasta que la Fase 2 los componentice) ---- */
    --pos:  #3fb950;  --pos-bg: rgba(63, 185, 80, .14);
    --neu:  #a1a1aa;  --neu-bg: rgba(161, 161, 170, .12);
    --neg:  #f85149;  --neg-bg: rgba(248, 81, 73, .14);
    --warn: #d29922;  --warn-bg: rgba(210, 153, 34, .14);

    /* ---- Radios (más ajustados = denso/pro) ---- */
    --radius:      9px;
    --radius-sm:   6px;
    --radius-lg:   13px;
    --radius-full: 999px;

    /* ---- Escala de espaciado 4/8 ---- */
    --space-1: 4px;  --space-2: 8px;  --space-3: 12px;
    --space-4: 16px; --space-5: 24px; --space-6: 32px; --space-7: 48px;

    /* ---- Tipografía ---- */
    --font-ui: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, "Cascadia Code", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;

    /* ---- Layout ---- */
    --sidebar-w: 220px;
    --sidebar-w-collapsed: 60px;
    --topbar-h: 52px;

    /* ---- Motion (rápido, solo transform/opacity/color) ---- */
    --speed-quick:   .1s;
    --speed-regular: .22s;
    --ease-out: cubic-bezier(.16, 1, .3, 1);

    --shadow-overlay: 0 12px 32px rgba(0, 0, 0, .45);
  }
}

@layer base {

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* Cifras de ancho fijo en toda la app: columnas de datos alineadas. */
  font-variant-numeric: tabular-nums;
}

h1, h2, h3, h4 { margin: 0 0 .5em; font-weight: 600; line-height: 1.25; letter-spacing: -.011em; }
h1 { font-size: 20px; }
h2 { font-size: 17px; }
h3 { font-size: 14px; letter-spacing: .01em; }
p { margin: 0 0 .8em; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

code, kbd, pre, .mono { font-family: var(--font-mono); }

::selection { background: rgba(59, 130, 246, .35); }

/* Scrollbar oscura */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
*::-webkit-scrollbar-thumb:hover { background: #2e3a4e; }
*::-webkit-scrollbar-track { background: transparent; }

/* Foco visible accesible (§1) */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ==========================================================================
   Layout: sidebar colapsable + content + topbar (§2)
   ========================================================================== */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  transition: grid-template-columns .16s ease;
}
.layout.is-collapsed { grid-template-columns: var(--sidebar-w-collapsed) 1fr; }

/* --- Sidebar --- */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0e131c, var(--panel));
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 9px;
  height: var(--topbar-h);
  padding: 0 14px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
}
.sidebar .brand .brand-mark {
  flex-shrink: 0;
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 6px;
  background: rgba(59, 130, 246, .16);
  color: var(--accent);
}
.sidebar .brand .brand-mark svg { width: 16px; height: 16px; }
.layout.is-collapsed .brand .brand-text { display: none; }

.sidebar nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 8px 8px 12px;
}

.nav-group {
  padding: 14px 10px 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--faint);
  white-space: nowrap;
}
.layout.is-collapsed .nav-group {
  color: transparent;
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding: 8px 0 0;
  height: 1px;
  overflow: hidden;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 8px 10px;
  margin: 1px 0;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 13.5px;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}
.nav-link .nav-ico {
  flex-shrink: 0;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  color: var(--faint);
}
.nav-link .nav-ico svg { width: 18px; height: 18px; }
.nav-link:hover { background: var(--panel-2); color: var(--text); }
.nav-link:hover .nav-ico { color: var(--muted); }
.nav-link.active { background: rgba(59, 130, 246, .14); color: var(--text); }
.nav-link.active .nav-ico { color: var(--accent); }
.nav-link.active::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--accent);
}
.nav-sub { padding-left: 10px; font-size: 13px; }

.layout.is-collapsed .nav-link { justify-content: center; padding: 9px 0; }
.layout.is-collapsed .nav-link .nav-text { display: none; }
.layout.is-collapsed .nav-sub { padding-left: 0; }

/* Tooltip para nav colapsado */
.layout.is-collapsed .nav-link:hover::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 6px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  padding: 4px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .4);
}

.sidebar-foot {
  flex-shrink: 0;
  padding: 8px;
  border-top: 1px solid var(--border);
}
.logout-form { margin: 0; }

/* --- Content + topbar --- */
.content {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--topbar-h);
  padding: 0 18px;
  background: rgba(11, 14, 20, .82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar .sidebar-toggle {
  flex-shrink: 0;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
}
.topbar .sidebar-toggle:hover { background: var(--panel-2); color: var(--text); }
.topbar .sidebar-toggle svg { width: 16px; height: 16px; }

.topbar .topbar-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar .topbar-spacer { flex: 1; }

/* Buscador rápido */
.topbar-search { position: relative; flex-shrink: 1; min-width: 0; }
.topbar-search input {
  width: 220px;
  max-width: 100%;
  padding: 6px 10px 6px 30px;
  font-size: 13px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
}
.topbar-search .search-ico {
  position: absolute;
  left: 9px; top: 50%;
  transform: translateY(-50%);
  color: var(--faint);
  pointer-events: none;
}
.topbar-search .search-ico svg { width: 14px; height: 14px; display: block; }

/* Selector de período global (§2) */
.period-picker {
  display: inline-flex;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}
.period-picker a {
  padding: 4px 10px;
  border-radius: 5px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--font-mono);
}
.period-picker a:hover { color: var(--text); background: var(--panel-2); }
.period-picker a.active { color: #fff; background: var(--accent); }

/* Usuario topbar */
.topbar-user {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px 4px 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
}
.topbar-user .avatar {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(59, 130, 246, .18);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}
.topbar-user .logout-inline {
  border: 0; background: transparent; padding: 0;
  color: var(--faint); cursor: pointer; display: grid; place-items: center;
}
.topbar-user .logout-inline:hover { color: var(--neg); }
.topbar-user .logout-inline svg { width: 15px; height: 15px; }

/* Cuerpo de página */
.page-body { padding: 18px; flex: 1; }

/* Encabezado de sección dentro del cuerpo (centro de comando) */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.page-header h1, .page-header .page-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

/* Selector de período (numérico) del dashboard */
.period-switch {
  display: inline-flex;
  gap: 4px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
}
.period-btn {
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.4;
  transition: background .12s, color .12s;
}
.period-btn:hover { color: var(--text); background: var(--panel); }
.period-btn.is-active {
  background: var(--accent);
  color: #fff;
}

/* Filtros del dashboard (actor / fuente) */
.dash-filters { margin-bottom: 14px; }
.dash-filters-row { display: flex; flex-wrap: wrap; gap: 14px; }
.dash-filters .field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}
.dash-filters .field select {
  min-width: 180px;
}

/* ==========================================================================
   Grid de 12 columnas (§2)
   ========================================================================== */

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}
.grid > .panel, .grid > .card { margin-bottom: 0; }

.col-1  { grid-column: span 1; }
.col-2  { grid-column: span 2; }
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-9  { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-12 { grid-column: span 12; }

/* Grids heredados (dashboard/admin previos) mapeados al esquema de 12 col */
.grid.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ==========================================================================
   Panel / Card (§2, §3)
   ========================================================================== */

.panel, .card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  min-width: 0;
}
.panel { padding: 0; }
.panel > .panel-body, .panel > .panel-head + * { }

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
}
.panel-head h2, .panel-head h3, .panel-head .panel-title {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.panel-head .panel-sub { font-size: 11.5px; color: var(--muted); }
.panel-head .panel-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.panel-body { padding: 14px 16px; }

.card h2, .card h3 { margin-top: 0; }
.card { margin-bottom: 14px; }
.card > h3:first-child { color: var(--text); font-size: 13px; margin-bottom: 12px; }

/* ==========================================================================
   KPI tile (§3) — etiqueta, número mono, delta, sparkline
   ========================================================================== */

.kpi {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 15px;
}
.kpi .kpi-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
}
.kpi .kpi-value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.05;
  color: var(--text);
}
.kpi .kpi-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.kpi .kpi-spark { height: 26px; flex: 1; min-width: 0; }
.kpi .kpi-spark canvas { width: 100% !important; height: 26px !important; }

/* ==========================================================================
   Bloques de sección del dashboard (§2) — ritmo vertical + título de grupo
   ========================================================================== */

.block { margin-bottom: 24px; }
.block:last-child { margin-bottom: 0; }
.block-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 600;
  color: var(--muted);
  margin: 0 0 10px;
}

.quality-strip {
  margin: 14px 0 24px;
}
.quality-metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.quality-metrics > div {
  min-width: 120px;
}
.metric-label {
  display: block;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.metric-value {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--text);
}

/* --- Compat: .stat (KPIs viejos del dashboard) reestilizados --- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat .value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
}
.stat .label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.kpis .stat .value { color: var(--accent); }

/* ==========================================================================
   Delta / badges / chips (§3)
   ========================================================================== */

.delta {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
}
.delta::before { font-size: 10px; }
.delta.up   { color: var(--pos); background: var(--pos-bg); }
.delta.up::before   { content: "▲"; }
.delta.down { color: var(--neg); background: var(--neg-bg); }
.delta.down::before { content: "▼"; }
.delta.flat { color: var(--muted); background: var(--neu-bg); }
.delta.flat::before { content: "="; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  line-height: 1.7;
  border: 1px solid transparent;
}
/* Nomenclatura del contrato: .badge.pos/.neu/.neg */
.badge.pos { background: var(--pos-bg); color: var(--pos); border-color: rgba(63, 185, 80, .3); }
.badge.neu { background: var(--neu-bg); color: var(--neu); border-color: rgba(139, 152, 173, .3); }
.badge.neg { background: var(--neg-bg); color: var(--neg); border-color: rgba(248, 81, 73, .3); }
.badge.warn { background: var(--warn-bg); color: var(--warn); border-color: rgba(210, 153, 34, .3); }
/* Compat: nomenclatura heredada .badge-pos/.badge-neu/.badge-neg */
.badge-pos { background: var(--pos-bg); color: var(--pos); }
.badge-neu { background: var(--neu-bg); color: var(--neu); }
.badge-neg { background: var(--neg-bg); color: var(--neg); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  margin: 2px 3px 2px 0;
  border-radius: 999px;
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
}
.chip.accent { border-color: rgba(59, 130, 246, .4); color: var(--accent-2); }

/* ==========================================================================
   Tablas densas (.dt) + tablas heredadas (§3)
   ========================================================================== */

table, .dt {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td, .dt th, .dt td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th, .dt th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
  font-weight: 600;
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 1;
}
tbody tr:hover, .dt tbody tr:hover { background: var(--panel-2); }
.dt td.num, td.num, .text-right, th.text-right { text-align: right; }
.dt td.num, td.num { font-family: var(--font-mono); }
tr:last-child td { border-bottom: none; }

/* ==========================================================================
   Botones (§3)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  background: var(--panel-2);
  color: var(--text);
  white-space: nowrap;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: #223047; border-color: #2e3a4e; }
.btn svg { width: 15px; height: 15px; }

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

.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--panel-2); color: var(--text); }

.btn-danger { background: transparent; border-color: rgba(248, 81, 73, .4); color: var(--neg); }
.btn-danger:hover { background: var(--neg-bg); }

.btn-block { width: 100%; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Logout de sidebar ocupa todo el ancho */
.logout-form .btn { width: 100%; }
.layout.is-collapsed .logout-form .btn-text { display: none; }

/* ==========================================================================
   Formularios (§3)
   ========================================================================== */

input, select, textarea {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  background: #0e141d;
  color: var(--text);
}
input::placeholder, textarea::placeholder { color: var(--faint); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, .25);
}
select option { background: var(--panel); color: var(--text); }
input[type="checkbox"], input[type="radio"] { width: auto; accent-color: var(--accent); }
input[type="date"] { color-scheme: dark; }

label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  margin: 10px 0 4px;
}

/* ==========================================================================
   Alertas / mensajes (§3)
   ========================================================================== */

.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-size: 13px;
  border: 1px solid transparent;
}
.alert-error { background: var(--neg-bg); color: var(--neg); border-color: rgba(248, 81, 73, .35); }
.alert-ok    { background: var(--pos-bg); color: var(--pos); border-color: rgba(63, 185, 80, .35); }
.alert-warn  { background: var(--warn-bg); color: var(--warn); border-color: rgba(210, 153, 34, .35); }

/* ==========================================================================
   Modal / dialog oscuro (§3)
   ========================================================================== */

.modal, dialog.modal {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .55);
  padding: 20px 22px;
  width: min(560px, 92vw);
}
.modal::backdrop, dialog::backdrop { background: rgba(4, 7, 12, .6); backdrop-filter: blur(2px); }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* ==========================================================================
   Chart wrap (§3)
   ========================================================================== */

.chart-wrap { position: relative; height: 280px; }
.chart-wrap.tall { height: 320px; }
.chart-wrap.short { height: 220px; }

/* ==========================================================================
   Skeleton + empty-state (§1, §3)
   ========================================================================== */

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--panel-2);
  border-radius: var(--radius-sm);
  min-height: 14px;
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .06), transparent);
  animation: skeleton-shimmer 1.3s infinite;
}
@keyframes skeleton-shimmer { 100% { transform: translateX(100%); } }
.skeleton.line { height: 12px; margin: 6px 0; }
.skeleton.block { height: 120px; }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 34px 20px;
  text-align: center;
  color: var(--muted);
}
.empty-state .empty-ico { color: var(--faint); }
.empty-state .empty-ico svg { width: 34px; height: 34px; }
.empty-state .empty-title { color: var(--text); font-weight: 600; }

/* ==========================================================================
   Utilidades
   ========================================================================== */

.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }
.mono { font-family: var(--font-mono); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-2 { margin-top: 8px; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none; }

.pos-text { color: var(--pos); }
.neg-text { color: var(--neg); }
.neu-text { color: var(--muted); }

/* ==========================================================================
   Login (§ tema oscuro)
   ========================================================================== */

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(59, 130, 246, .12), transparent 60%),
    radial-gradient(1000px 500px at 100% 110%, rgba(34, 211, 238, .1), transparent 55%),
    var(--bg);
  padding: 20px;
}
.login-card {
  width: 360px;
  max-width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .5);
  padding: 30px 30px 34px;
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.login-brand .brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: rgba(59, 130, 246, .16);
  color: var(--accent);
}
.login-brand .brand-mark svg { width: 20px; height: 20px; }
.login-title { margin: 0; font-size: 17px; font-weight: 700; }
.login-subtitle { margin: 0 0 20px; color: var(--muted); font-size: 13px; }
.login-form label:first-of-type { margin-top: 0; }
.login-form .btn-primary { width: 100%; margin-top: 20px; }

/* ==========================================================================
   Responsive (§1)
   ========================================================================== */

@media (max-width: 1100px) {
  .col-3 { grid-column: span 6; }
  .col-4 { grid-column: span 6; }
}

@media (max-width: 860px) {
  .layout { grid-template-columns: var(--sidebar-w-collapsed) 1fr; }
  .layout .brand-text,
  .layout .nav-text,
  .layout .nav-group { display: none; }
  .layout .nav-link { justify-content: center; padding: 9px 0; }
  .topbar-search input { width: 140px; }
  .grid > [class*="col-"] { grid-column: span 12; }
  .grid.grid-2, .grid.grid-3, .grid.grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .topbar-search, .period-picker { display: none; }
  .page-body { padding: 12px; }
}

/* ==========================================================================
   Motion & pulido de interacción (Fase 1)
   Transiciones cortas (100ms) solo en color/borde; foco con halo de acento.
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .nav-link, .btn, .period-btn, .period-picker a, .chip, .badge,
  tbody tr, .kpi, .panel, .topbar-user, input, select, textarea {
    transition:
      background-color var(--speed-quick) var(--ease-out),
      border-color     var(--speed-quick) var(--ease-out),
      color            var(--speed-quick) var(--ease-out),
      box-shadow       var(--speed-quick) var(--ease-out);
  }
}

/* Foco: halo sutil de acento (más premium que solo el outline). */
input:focus, select:focus, textarea:focus {
  box-shadow: 0 0 0 3px var(--accent-quiet);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

}  /* ← cierre de @layer base */

/* ==========================================================================
   Fase 4 — Motion & polish (View Transitions, :has(), container queries)
   Fuera de capas: los pseudo-elementos de VT y estas utilidades deben ganar.
   ========================================================================== */

/* Transición entre páginas (navegación normal por links del sidebar) y, con
   htmx globalViewTransitions, también en los swaps de fragmentos. Cross-fade
   corto y asimétrico. Degrada a swap instantáneo sin soporte. */
@view-transition { navigation: auto; }

::view-transition-old(root) { animation: mm-vt-out 90ms ease both; }
::view-transition-new(root) { animation: mm-vt-in 150ms ease both; }
@keyframes mm-vt-in  { from { opacity: 0; } }
@keyframes mm-vt-out { to   { opacity: 0; } }

/* Hover: los KPI tiles reaccionan (borde + leve elevación). */
@media (prefers-reduced-motion: no-preference) {
  .kpi { transition: border-color var(--speed-quick) var(--ease-out), transform var(--speed-quick) var(--ease-out); }
  .kpi:hover { border-color: var(--border-strong); transform: translateY(-1px); }
}

/* :has() — un panel que es SÓLO un estado vacío (sin cabecera) se ve más
   liviano (borde punteado, sin relleno) sin necesidad de una clase extra. */
.panel:not(:has(.panel-head)):has(> .empty-state) { background: transparent; border-style: dashed; }

/* Container queries — los paneles se adaptan a SU ancho, no al del viewport,
   así el mismo KPI funciona a 3 o a 12 columnas. */
.kpi { container-type: inline-size; }
@container (max-width: 150px) {
  .kpi .kpi-value { font-size: 24px; }
  .kpi .kpi-spark { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
}

/* ==========================================================================
   Tablero ejecutivo (Fase 4) — bandeja de acción, severidades y paneles
   ========================================================================== */
.exec-section { margin: 0 0 22px; }
.section-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--text);
  margin: 0 0 12px;
  letter-spacing: -.01em;
}

/* Bandeja "Requiere atención" */
.action-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.action-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--neu);
  border-radius: var(--radius, 8px);
  font-size: 13px;
}
.action-item.sev-alta  { border-left-color: var(--neg); }
.action-item.sev-media { border-left-color: var(--warn); }
.action-item.sev-baja  { border-left-color: var(--neu); }
.action-title { font-weight: 600; color: var(--text); }
.action-evidence { margin-left: auto; text-align: right; font-size: 12px; }

/* Badges de severidad (alta→neg, media→warn, baja→neu). Reusa .badge base. */
.badge-alta,  .badge.alta  { background: var(--neg-bg);  color: var(--neg);  border-color: rgba(248, 81, 73, .3); }
.badge-media, .badge.media { background: var(--warn-bg); color: var(--warn); border-color: rgba(210, 153, 34, .3); }
.badge-baja,  .badge.baja  { background: var(--neu-bg);  color: var(--neu);  border-color: rgba(161, 161, 170, .3); }

/* Paneles del grid ejecutivo (.panel base tiene padding:0) */
.exec-grid { margin-top: 4px; }
.exec-panel { padding: 16px; }
.exec-panel .panel-title { font-size: 13.5px; font-weight: 650; color: var(--text); margin: 0 0 2px; }
.exec-panel .panel-hint { margin: 0 0 12px; font-size: 12px; }
.exec-panel .data-table { margin-top: 4px; }

/* Color semántico en celdas numéricas (alinea pos/neg/neu con los tokens) */
td.num.pos, .num.pos { color: var(--pos); }
td.num.neg, .num.neg { color: var(--neg); }
td.num.neu, .num.neu { color: var(--neu); }

/* ==========================================================================
   Ayuda / manual de usuario — prosa renderizada desde Markdown
   ========================================================================== */
.manual-prose { padding: 26px 30px; max-width: 900px; line-height: 1.65; }
.manual-prose > :first-child { margin-top: 0; }
.manual-prose h1 { font-size: 22px; font-weight: 700; margin: 4px 0 14px; letter-spacing: -.02em; }
.manual-prose h2 {
  font-size: 17px;
  font-weight: 650;
  margin: 30px 0 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text);
}
.manual-prose h3 { font-size: 14.5px; font-weight: 650; margin: 20px 0 8px; color: var(--text); }
.manual-prose p, .manual-prose li { color: var(--text-2, var(--text)); font-size: 13.5px; }
.manual-prose ul, .manual-prose ol { padding-left: 22px; margin: 8px 0; }
.manual-prose li { margin: 4px 0; }
.manual-prose strong { color: var(--text); font-weight: 650; }
.manual-prose a { color: var(--accent); }
.manual-prose code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
}
.manual-prose table { margin: 12px 0; font-size: 13px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.manual-prose thead th { position: static; }
.manual-prose td, .manual-prose th { border-bottom: 1px solid var(--border); }