/* TradeMentor — tema oscuro tipo terminal de trading (modo único, deliberado) */

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #1c2330;
  --border: #2a3140;
  --ink: #e6edf3;
  --ink-2: #9aa7b4;
  --ink-3: #6b7684;
  --accent: #4f8ef7;
  --verde: #26a69a;
  --rojo: #ef5350;
  --ambar: #d9a521;
  --verde-bg: rgba(38, 166, 154, .12);
  --rojo-bg: rgba(239, 83, 80, .12);
  --ambar-bg: rgba(217, 165, 33, .12);
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 1.35rem; margin: 0 0 .25rem; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 .75rem; }
h3 { font-size: 1rem; margin: 1rem 0 .5rem; }
p { margin: .5rem 0; }
.muted { color: var(--ink-2); }
.small { font-size: .85rem; }

/* ---------- Navegación ---------- */
nav.topbar {
  display: flex; align-items: center; gap: .25rem;
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: .5rem 1rem; position: sticky; top: 0; z-index: 50;
  overflow-x: auto; white-space: nowrap;
}
nav.topbar .logo {
  font-weight: 700; margin-right: 1rem; color: var(--ink);
  display: flex; align-items: center; gap: .4rem;
}
nav.topbar a.navlink {
  color: var(--ink-2); padding: .45rem .8rem; border-radius: 8px; font-size: .92rem;
}
nav.topbar a.navlink:hover { color: var(--ink); background: var(--surface-2); }
nav.topbar a.navlink.activa { color: var(--ink); background: var(--surface-2); font-weight: 600; }
nav.topbar .spacer { flex: 1; }
nav.topbar button.salir {
  background: none; border: 1px solid var(--border); color: var(--ink-2);
  padding: .35rem .8rem; border-radius: 8px; cursor: pointer; font-size: .85rem;
}
nav.topbar button.salir:hover { color: var(--ink); border-color: var(--ink-3); }
nav.topbar button.instalar {
  background: var(--accent); border: 1px solid var(--accent); color: #fff;
  padding: .35rem .8rem; border-radius: 8px; cursor: pointer; font-size: .85rem; margin-right: .5rem;
}
nav.topbar button.instalar:hover { filter: brightness(1.1); }

main { max-width: 1200px; margin: 0 auto; padding: 1.25rem 1rem 4rem; }

/* ---------- Tarjetas ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem;
}
.grid { display: grid; gap: 1rem; }
.grid.mercados { grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); }

.mercado { cursor: pointer; transition: border-color .15s; position: relative; }
.mercado:hover { border-color: var(--accent); }
.mercado .fila { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; }
.mercado .nombre { font-weight: 600; }
.mercado .tipo { font-size: .72rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.mercado .precio { font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.mercado .cambio { font-variant-numeric: tabular-nums; font-weight: 600; font-size: .9rem; }
.sube { color: var(--verde); }
.baja { color: var(--rojo); }
.mercado svg.spark { width: 100%; height: 42px; margin-top: .4rem; display: block; }

/* ---------- Semáforo ---------- */
.semaforo {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .8rem; font-weight: 600; padding: .25rem .6rem; border-radius: 999px;
}
.semaforo::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.semaforo.verde { color: var(--verde); background: var(--verde-bg); }
.semaforo.amarillo { color: var(--ambar); background: var(--ambar-bg); }
.semaforo.rojo { color: var(--rojo); background: var(--rojo-bg); }
.semaforo.cargando { color: var(--ink-3); background: var(--surface-2); }

/* ---------- Checklist ---------- */
.check-item { display: flex; gap: .7rem; padding: .7rem 0; border-bottom: 1px solid var(--border); }
.check-item:last-child { border-bottom: none; }
.check-icono { flex: none; width: 1.5rem; height: 1.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .8rem; font-weight: 700; }
.check-icono.si { background: var(--verde-bg); color: var(--verde); }
.check-icono.no { background: var(--rojo-bg); color: var(--rojo); }
.check-icono.na { background: var(--surface-2); color: var(--ink-3); }
.check-item .titulo { font-weight: 600; font-size: .92rem; }
.check-item .explica { color: var(--ink-2); font-size: .86rem; margin-top: .15rem; }

/* ---------- Formularios ---------- */
label.campo { display: block; margin: .6rem 0 .2rem; font-size: .85rem; color: var(--ink-2); }
input, select, textarea {
  width: 100%; background: var(--surface-2); border: 1px solid var(--border);
  color: var(--ink); border-radius: 8px; padding: .55rem .7rem; font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
button.principal {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: .6rem 1.2rem; font: inherit; font-weight: 600; cursor: pointer; margin-top: .9rem;
}
button.principal:hover { filter: brightness(1.1); }
button.secundario {
  background: var(--surface-2); color: var(--ink); border: 1px solid var(--border);
  border-radius: 8px; padding: .45rem .9rem; font: inherit; cursor: pointer;
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0 1rem; }

/* ---------- Tablas ---------- */
.tabla-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th { text-align: left; color: var(--ink-2); font-weight: 600; padding: .5rem .6rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: .5rem .6rem; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }

/* ---------- Stat tiles ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .75rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .8rem 1rem; }
.stat .etiqueta { font-size: .75rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .04em; }
.stat .valor { font-size: 1.45rem; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: .15rem; }

/* ---------- Avisos ---------- */
.aviso {
  border-left: 3px solid var(--ambar); background: var(--ambar-bg);
  padding: .7rem .9rem; border-radius: 0 8px 8px 0; font-size: .86rem; color: var(--ink-2);
}
.aviso strong { color: var(--ink); }
.veredicto { padding: .9rem 1rem; border-radius: var(--radius); font-size: .95rem; }
.veredicto.verde { background: var(--verde-bg); border: 1px solid var(--verde); }
.veredicto.amarillo { background: var(--ambar-bg); border: 1px solid var(--ambar); }
.veredicto.rojo { background: var(--rojo-bg); border: 1px solid var(--rojo); }

/* ---------- Análisis (layout gráfico + panel) ---------- */
.analisis-layout { display: grid; grid-template-columns: 1fr 380px; gap: 1rem; align-items: start; }
@media (max-width: 980px) { .analisis-layout { grid-template-columns: 1fr; } }
#grafico { height: 460px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.controles { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .75rem; align-items: center; }
.controles select { width: auto; }
.tf-botones { display: flex; gap: .25rem; }
.tf-botones button {
  background: var(--surface-2); border: 1px solid var(--border); color: var(--ink-2);
  padding: .4rem .7rem; border-radius: 8px; cursor: pointer; font: inherit; font-size: .85rem;
}
.tf-botones button.activo { background: var(--accent); color: #fff; border-color: var(--accent); }

.leyenda-linea { display: inline-flex; align-items: center; gap: .35rem; margin-right: .9rem; font-size: .8rem; color: var(--ink-2); }
.leyenda-linea::before { content: ''; width: 14px; height: 2px; background: var(--c); display: inline-block; border-radius: 2px; }

.plan-niveles { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin-top: .5rem; }
.nivel { background: var(--surface-2); border-radius: 8px; padding: .5rem .7rem; }
.nivel .etiqueta { font-size: .72rem; color: var(--ink-2); text-transform: uppercase; }
.nivel .valor { font-weight: 700; font-variant-numeric: tabular-nums; }

/* ---------- Academia ---------- */
.leccion-item { display: flex; align-items: center; gap: .9rem; padding: .9rem 1rem; cursor: pointer; }
.leccion-item:hover { border-color: var(--accent); }
.leccion-num {
  flex: none; width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: var(--surface-2); display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.leccion-num.hecha { background: var(--verde-bg); color: var(--verde); }
.leccion-contenido { max-width: 760px; margin: 0 auto; }
.leccion-contenido h2 { margin-top: 1.75rem; }
.leccion-contenido ul, .leccion-contenido ol { padding-left: 1.4rem; }
.leccion-contenido li { margin: .3rem 0; }
.leccion-contenido .ejemplo {
  background: var(--surface-2); border-left: 3px solid var(--accent);
  padding: .7rem .9rem; border-radius: 0 8px 8px 0; margin: .75rem 0;
}
.quiz-opcion {
  display: block; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 8px; padding: .6rem .8rem; margin: .4rem 0; cursor: pointer;
}
.quiz-opcion:hover { border-color: var(--accent); }
.quiz-opcion.correcta { border-color: var(--verde); background: var(--verde-bg); }
.quiz-opcion.incorrecta { border-color: var(--rojo); background: var(--rojo-bg); }
.progreso-barra { height: 8px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin: .5rem 0 1rem; }
.progreso-barra > div { height: 100%; background: var(--verde); border-radius: 999px; transition: width .3s; }

/* ---------- Login ---------- */
.login-caja { max-width: 380px; margin: 12vh auto 0; padding: 2rem; }
.login-caja h1 { text-align: center; }
.error-msg { color: var(--rojo); font-size: .88rem; margin-top: .5rem; min-height: 1.2em; }

/* ---------- Curva de capital ---------- */
#curva-capital { width: 100%; height: 220px; }

@media (max-width: 640px) {
  main { padding: .9rem .7rem 3rem; }
  .grid.mercados { grid-template-columns: 1fr 1fr; }
  #grafico { height: 340px; }
}
@media (max-width: 460px) {
  .grid.mercados { grid-template-columns: 1fr; }
}