/* =============================================================
   Dashboard CTH — UI v2
   Stack: vanilla CSS, Inter, uPlot
   Diseño: dashboard denso, panorámico, sin animaciones costosas
   ============================================================= */

:root {
  /* Tipografía */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;

  /* Paleta base (oscura, neutra, profesional) */
  --bg: #07090f;
  --bg-1: #0a0e17;
  --bg-2: #0f1521;
  --surface: #111827;
  --surface-hi: #161f30;
  --border: #1f2937;
  --border-strong: #2a3447;

  --text: #f1f5f9;
  --text-2: #cbd5e1;
  --text-3: #94a3b8;
  --text-4: #64748b;

  /* Acentos (uno por categoría, sin gradientes locos) */
  --acc-revenue: #60a5fa;   /* Facturación */
  --acc-profit:  #34d399;   /* Rentabilidad */
  --acc-pending: #fbbf24;   /* Pendientes */
  --acc-openai:  #10b981;
  --acc-fb:      #3b82f6;
  --acc-wa:      #22c55e;
  --acc-letters: #f59e0b;
  --acc-sent:    #22c55e;
  --acc-conv:    #f59e0b;
  --acc-versions:#a78bfa;
  --acc-pri:     #3b82f6;
  --acc-pri-hi:  #60a5fa;
  --acc-danger:  #ef4444;

  /* Espaciado */
  --gap-1: 0.25rem;
  --gap-2: 0.5rem;
  --gap-3: 0.75rem;
  --gap-4: 1rem;
  --gap-5: 1.25rem;
  --gap-6: 1.5rem;

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;

  /* Sombras (suaves, sin blur excesivo) */
  --sh-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --sh-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --sh-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 120ms var(--ease);
  --t-med:  180ms var(--ease);
}

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  /* Sutil gradiente estático, sin animaciones */
  background-image:
    radial-gradient(900px 500px at 80% -10%, rgba(59, 130, 246, 0.05), transparent 60%),
    radial-gradient(700px 400px at 0% 100%, rgba(139, 92, 246, 0.04), transparent 60%);
  background-attachment: fixed;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  color: var(--text);
}

button {
  font-family: inherit;
  cursor: pointer;
}

input, select {
  font-family: inherit;
  color: inherit;
}

a { color: var(--acc-pri-hi); }

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--acc-pri);
  color: #fff;
  padding: 8px 12px;
  text-decoration: none;
  z-index: 10000;
  border-radius: 0 0 8px 0;
  font-weight: 500;
}
.skip-link:focus { top: 0; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============================================================
   App shell
   ============================================================= */
.app {
  display: none; /* lo activa el JS al loguear */
  max-width: 1600px;
  margin: 0 auto;
  padding: clamp(0.75rem, 1.6vw, 1.5rem);
  flex-direction: column;
  gap: var(--gap-4);
}

.app[data-visible="true"] {
  display: flex;
}

/* =============================================================
   Header
   ============================================================= */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-4);
  padding: var(--gap-3) 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--gap-3);
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--acc-pri) 0%, #6366f1 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: var(--sh-md);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}
.brand-sub {
  font-size: 0.78rem;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--gap-2);
  flex-wrap: wrap;
}

/* Region toggle compacto */
.region-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
}

.region-toggle .region-btn {
  padding: 0.4rem 0.75rem;
  border: none;
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-3);
  background: transparent;
  transition: color var(--t-fast), background var(--t-fast);
  letter-spacing: 0.01em;
}

.region-toggle .region-btn:hover {
  color: var(--text-2);
}

.region-toggle .region-btn.active {
  color: #fff;
  background: var(--acc-pri);
  box-shadow: var(--sh-sm);
}

/* User menu */
.user-menu {
  position: relative;
  display: none;
  align-items: center;
}

.user-menu.is-active { display: flex; }

#userMenuBtn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 500;
  transition: border-color var(--t-fast), background var(--t-fast);
}

#userMenuBtn:hover {
  border-color: var(--border-strong);
  background: var(--surface-hi);
}

#userMenuBtn #userName {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#userMenu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  background: var(--surface-hi);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 6px;
  box-shadow: var(--sh-lg);
  z-index: 100;
}

#userMenu.is-open { display: block; }

#userMenu button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.7rem;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--text-2);
  font-size: 0.85rem;
  text-align: left;
  transition: background var(--t-fast), color var(--t-fast);
}

#userMenu button:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
}

/* =============================================================
   Toolbar (controles compactos)
   ============================================================= */
.toolbar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--gap-3) var(--gap-4);
  display: flex;
  flex-direction: column;
  gap: var(--gap-2);
}

.toolbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap-3);
}

.toolbar-quick {
  display: inline-flex;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.toolbar-quick button {
  padding: 0.4rem 0.85rem;
  background: transparent;
  border: none;
  border-radius: 7px;
  color: var(--text-3);
  font-size: 0.82rem;
  font-weight: 500;
  transition: background var(--t-fast), color var(--t-fast);
}

.toolbar-quick button:hover {
  color: var(--text);
}

.toolbar-quick button.active {
  background: var(--surface-hi);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.toolbar-date {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-2);
  margin-left: auto;
}

.toolbar-date label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 500;
}

input[type="date"],
select {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.45rem 0.7rem;
  font-size: 0.82rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  font-variant-numeric: tabular-nums;
}

input[type="date"]:focus,
select:focus {
  outline: none;
  border-color: var(--acc-pri);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
  cursor: pointer;
}

.btn-primary {
  background: var(--acc-pri);
  color: #fff;
  border: 1px solid var(--acc-pri);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: background var(--t-fast), transform var(--t-fast);
}

.btn-primary:hover {
  background: #2563eb;
}

.btn-primary:active {
  transform: translateY(1px);
}

/* Loading pill */
.loading-pill {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  color: var(--acc-pri-hi);
  font-size: 0.78rem;
  font-weight: 500;
}

.loading-pill.is-active { display: inline-flex; }

/* Banner */
.banner {
  display: none;
  padding: 0.6rem 0.85rem;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #fca5a5;
  font-size: 0.85rem;
  font-weight: 500;
}

.banner.is-visible { display: block; }

/* =============================================================
   KPI Grid
   ============================================================= */
.kpi-grid {
  display: grid;
  gap: var(--gap-3);
}

.kpi-grid--hero {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.kpi-grid--cost {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.kpi {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--gap-4) var(--gap-4);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: border-color var(--t-fast), background var(--t-fast);
  overflow: hidden;
}

.kpi:hover {
  border-color: var(--border-strong);
  background: var(--surface-hi);
}

.kpi-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-2);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

.kpi-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kpi-icon--revenue  { background: rgba(96, 165, 250, 0.12); color: var(--acc-revenue); }
.kpi-icon--profit   { background: rgba(52, 211, 153, 0.12); color: var(--acc-profit); }
.kpi-icon--pending  { background: rgba(251, 191, 36, 0.12); color: var(--acc-pending); }
.kpi-icon--openai   { background: rgba(16, 185, 129, 0.12); color: var(--acc-openai); }
.kpi-icon--fb       { background: rgba(59, 130, 246, 0.12); color: var(--acc-fb); }
.kpi-icon--wa       { background: rgba(34, 197, 94, 0.12); color: var(--acc-wa); }
.kpi-icon--letters  { background: rgba(245, 158, 11, 0.12); color: var(--acc-letters); }

.kpi-value {
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.kpi-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-2);
  font-size: 0.78rem;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  min-height: 1.2em;
}

.kpi-meta strong {
  color: var(--text-2);
  font-weight: 600;
}

/* Hero KPI: ligero highlight superior por color */
.kpi--hero { padding: var(--gap-5) var(--gap-4); }

.kpi--hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent, var(--acc-pri));
  opacity: 0.7;
}

.kpi--revenue { --accent: var(--acc-revenue); }
.kpi--profit  { --accent: var(--acc-profit); }
.kpi--pending { --accent: var(--acc-pending); }

/* Cost KPI: más compacto */
.kpi--cost {
  padding: var(--gap-3) var(--gap-4);
}

.kpi--cost .kpi-value {
  font-size: 1.25rem;
}

/* Skeleton */
.skeleton {
  position: relative;
  color: transparent !important;
  background: linear-gradient(90deg, var(--surface-hi) 0%, var(--border) 50%, var(--surface-hi) 100%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
  border-radius: 6px;
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* =============================================================
   Charts grid
   ============================================================= */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-3);
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--gap-4);
  display: flex;
  flex-direction: column;
  gap: var(--gap-3);
  transition: border-color var(--t-fast);
}

.chart-card:hover {
  border-color: var(--border-strong);
}

.chart-card--full {
  grid-column: 1 / -1;
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--gap-3);
  flex-wrap: wrap;
}

.chart-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
}

.chart-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot, var(--acc-pri));
  box-shadow: 0 0 8px var(--dot, var(--acc-pri));
}

.chart-stats {
  display: flex;
  align-items: center;
  gap: var(--gap-3);
  flex-wrap: wrap;
  margin-left: auto;
}

.chart-stat {
  display: inline-flex;
  flex-direction: column;
  font-size: 0.7rem;
  color: var(--text-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  line-height: 1.1;
}

.chart-stat strong {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  margin-top: 2px;
  text-transform: none;
}

.chart-stat--muted strong { color: var(--text-2); font-weight: 500; }

.chart-controls {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-2);
  flex-wrap: wrap;
}

.chart-controls select {
  font-size: 0.78rem;
  padding: 0.35rem 0.55rem;
  min-width: auto;
}

.chart-body {
  width: 100%;
  height: 240px;
  position: relative;
  background: var(--bg-2);
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
}

.chart-loader,
.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-4);
  font-size: 0.85rem;
}

.empty-state svg { opacity: 0.3; }

/* =============================================================
   uPlot tweaks
   ============================================================= */
.uplot {
  font-family: var(--font-sans) !important;
}
.uplot .u-axis text { fill: var(--text-3) !important; }
.uplot .u-axis line { stroke: var(--border-strong) !important; }
.uplot .u-grid line { stroke: var(--border) !important; opacity: 0.6 !important; }
.uplot .u-legend {
  color: var(--text-3) !important;
  font-size: 11px !important;
}
.uplot .u-legend th { font-weight: 500; }
.uplot path { stroke-width: 2px !important; }
.uplot .u-cursor-pt { box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); }

/* =============================================================
   Auth prompt
   ============================================================= */
.auth-prompt {
  display: none;
  max-width: 420px;
  margin: clamp(3rem, 8vh, 6rem) auto 2rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  text-align: center;
  box-shadow: var(--sh-lg);
}

.auth-prompt[data-visible="true"] { display: block; }

.auth-prompt-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--acc-pri) 0%, #6366f1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-prompt h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  font-weight: 600;
}

.auth-prompt p {
  margin: 0 0 1.5rem;
  color: var(--text-3);
  font-size: 0.9rem;
}

#btnLogin {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 1.25rem;
  background: var(--acc-pri);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background var(--t-fast);
}

#btnLogin:hover { background: #2563eb; }

/* =============================================================
   Page loader (overlay sutil)
   ============================================================= */
.page-loading {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(7, 9, 15, 0.55);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.page-loading.is-active { display: flex; }

.page-loading .box {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--sh-lg);
  font-weight: 500;
  color: var(--text);
}

/* Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.9s linear infinite; transform-origin: center; }

/* =============================================================
   Tooltip helper
   ============================================================= */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.4rem 0.6rem;
  background: var(--bg);
  color: var(--text-2);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-fast), transform var(--t-fast);
  z-index: 50;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 768px) {
  [data-tooltip]::after { display: none; }
}

/* =============================================================
   Lazy fade in
   ============================================================= */
.section-hidden {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 350ms var(--ease), transform 350ms var(--ease);
}

.section-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================================
   Scrollbar
   ============================================================= */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 6px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: #3b475e; }

* { scrollbar-width: thin; scrollbar-color: var(--border-strong) var(--bg); }

/* =============================================================
   Focus visible (accesibilidad)
   ============================================================= */
:focus-visible {
  outline: 2px solid var(--acc-pri);
  outline-offset: 2px;
  border-radius: 4px;
}

button:focus-visible {
  outline-offset: 1px;
}

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 1280px) {
  .charts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .kpi-grid--hero { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .kpi-grid--cost { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .app { padding: var(--gap-3); gap: var(--gap-3); }
  .app-header { flex-direction: column; align-items: stretch; }
  .header-actions { justify-content: space-between; }
  .toolbar-date { margin-left: 0; width: 100%; justify-content: flex-end; flex-wrap: wrap; }
  .toolbar-quick { width: 100%; justify-content: space-between; }
  .toolbar-quick button { flex: 1; }
  .kpi-grid--hero { grid-template-columns: 1fr; }
  .kpi-grid--cost { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .charts-grid { grid-template-columns: 1fr; }
  .chart-stats { width: 100%; margin-left: 0; }
  .chart-controls { width: 100%; }
  .chart-controls select { flex: 1; }
}

@media (max-width: 480px) {
  body { font-size: 13px; }
  .kpi-grid--cost { grid-template-columns: 1fr; }
  .chart-body { height: 220px; }
  .brand h1 { font-size: 0.95rem; }
  .toolbar-quick button { font-size: 0.78rem; padding: 0.4rem 0.6rem; }
  .region-toggle .region-btn { font-size: 0.74rem; padding: 0.35rem 0.55rem; }
}