/* ===== VARIABLES ===== */
:root {
  --bg:       #0d0f14;
  --bg2:      #151820;
  --bg3:      #1e2230;
  --border:   #2a2f42;
  --accent:   #00e5ff;
  --accent2:  #7c3aed;
  --green:    #00e676;
  --red:      #ff1744;
  --yellow:   #ffd600;
  --text:     #e8eaf0;
  --text-muted: #6b7280;
  --radius:   12px;
  --font:     'Courier New', Courier, monospace;
  --shadow:   0 2px 12px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg:       #f0f2f7;
  --bg2:      #ffffff;
  --bg3:      #e8eaf0;
  --border:   #d1d5db;
  --accent:   #0077b6;
  --accent2:  #7c3aed;
  --text:     #111827;
  --text-muted: #6b7280;
  --shadow:   0 2px 12px rgba(0,0,0,0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s, color 0.3s;
}

/* ===== HEADER ===== */
header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow);
}
.header-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  white-space: nowrap;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.countdown {
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  white-space: nowrap;
}
.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  transition: background 0.2s;
}
.btn-icon:hover { background: var(--bg3); }
.btn-actualizar {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.8rem;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-actualizar:hover { background: rgba(0,229,255,0.08); }
.btn-actualizar.loading { opacity: 0.5; pointer-events: none; }

/* ===== MAIN ===== */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  transition: background 0.3s, border-color 0.3s;
}

/* ===== PRECIO ===== */
.card-precio { text-align: center; }
.precio-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.precio-valor {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -1px;
}
.precio-meta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.variacion { font-size: 0.95rem; font-weight: 600; }
.variacion.positivo { color: var(--green); }
.variacion.negativo { color: var(--red); }
.variacion-apertura { font-size: 0.8rem; color: var(--text-muted); }
.ultima-fecha { font-size: 0.68rem; color: var(--text-muted); margin-top: 2px; }

/* ===== SEÑAL ===== */
.card-senal {
  text-align: center;
  border-left: 3px solid var(--accent2);
}
.senal-titulo {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.senal-emoji   { font-size: 2.2rem; margin-bottom: 4px; }
.senal-texto   { font-size: 1.4rem; font-weight: 700; letter-spacing: 3px; margin-bottom: 4px; }
.senal-texto.COMPRAR { color: var(--green); }
.senal-texto.VENDER  { color: var(--red); }
.senal-texto.ESPERAR { color: var(--yellow); }
.senal-score {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.senal-razon {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 480px;
  margin: 0 auto;
}

/* ===== INDICADORES GRID ===== */
.indicadores-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.card-indicador { text-align: center; padding: 14px 10px; }
.ind-label {
  font-size: 0.66rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 5px;
}
.ind-valor { font-size: 1.25rem; font-weight: 700; color: var(--text); }
.ind-sub   { font-size: 0.68rem; color: var(--text-muted); margin-top: 2px; }
.ind-sub.sobrecomprado { color: var(--red); }
.ind-sub.sobrevendido  { color: var(--green); }
.ind-sub.neutral       { color: var(--yellow); }

/* ===== BOLLINGER ===== */
.card-bollinger { padding: 16px 18px; }
.bollinger-titulo {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.bollinger-sub { font-size: 0.62rem; opacity: 0.6; }
.bollinger-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.bb-item { display: flex; flex-direction: column; gap: 3px; }
.bb-label { font-size: 0.64rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.bb-valor { font-size: 0.95rem; font-weight: 700; }
.bb-posicion {
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 8px;
  line-height: 1.5;
}

/* ===== NIVELES ===== */
.card-niveles { padding: 16px 18px; }
.niveles-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}
.nivel-item { display: flex; flex-direction: column; gap: 4px; }
.nivel-label { font-size: 0.64rem; color: var(--text-muted); letter-spacing: 1px; text-transform: uppercase; }
.nivel-valor { font-size: 0.9rem; font-weight: 700; }
.tendencia-badge.ALCISTA { color: var(--green); }
.tendencia-badge.BAJISTA { color: var(--red); }
.tendencia-badge.LATERAL { color: var(--yellow); }
.soporte     { color: var(--green); }
.resistencia { color: var(--red); }
.variaciones-row {
  display: flex;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
  flex-wrap: wrap;
}
.var-item { display: flex; flex-direction: column; gap: 3px; }
.var-label { font-size: 0.64rem; color: var(--text-muted); text-transform: uppercase; }
.var-valor { font-size: 0.9rem; font-weight: 600; }
.var-valor.positivo { color: var(--green); }
.var-valor.negativo { color: var(--red); }

/* ===== GRÁFICOS ===== */
.card-grafico { padding: 16px 18px; }
.grafico-titulo {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.grafico-sub { font-size: 0.6rem; opacity: 0.7; text-transform: none; letter-spacing: 0; }
.grafico-wrap     { position: relative; height: 220px; }
.grafico-wrap-sm  { position: relative; height: 130px; }

/* ===== TABLAS ===== */
.card-senales, .card-historial { padding: 16px 18px; }
.senales-titulo {
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.tabla-wrap { overflow-x: auto; }
.tabla {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}
.tabla th {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.tabla td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  white-space: nowrap;
}
.tabla tr:last-child td { border-bottom: none; }
.tabla tr:hover td { background: var(--bg3); }
.tabla-empty { color: var(--text-muted); text-align: center; padding: 16px !important; }
.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.7rem;
}
.badge-comprar { background: rgba(0,230,118,0.15); color: var(--green); }
.badge-vender  { background: rgba(255,23,68,0.15);  color: var(--red); }
.badge-esperar { background: rgba(255,214,0,0.15);  color: var(--yellow); }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 12px 16px;
  text-align: center;
}
footer p { font-size: 0.66rem; color: var(--text-muted); line-height: 1.6; }
footer a { color: var(--accent); text-decoration: none; }

/* ===== RESPONSIVE ===== */
@media (min-width: 480px) {
  .precio-valor { font-size: 3.4rem; }
  .indicadores-grid { grid-template-columns: repeat(4, 1fr); }
  .niveles-row { grid-template-columns: repeat(4, 1fr); }
}