/* =========================================================
   Torneos de Ajedrez — hoja de estilos
   Paleta sobria tipo ajedrez: negro, blanco, acento dorado.
   ========================================================= */

:root {
  --color-bg: #f7f6f3;
  --color-surface: #ffffff;
  --color-text: #1c1c1c;
  --color-text-muted: #5a5a5a;
  --color-border: #e2e0da;
  --color-header: #14161a;
  --color-header-text: #f7f6f3;
  --color-accent: #b8892b;
  --color-accent-dark: #8f6a1e;
  --color-link: #14161a;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-surface: #1b1b1b;
    --color-text: #f0efec;
    --color-text-muted: #b3b0a8;
    --color-border: #2e2e2e;
    --color-header: #0b0c0e;
    --color-header-text: #f0efec;
    --color-accent: #d7a94a;
    --color-accent-dark: #c99a3a;
    --color-link: #d7a94a;
  }
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.5;
}

a { color: var(--color-link); }

.contenedor {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Encabezado y navegación ---------- */

.sitio-header {
  background: var(--color-header);
  color: var(--color-header-text);
}

.barra-superior {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-header-text);
  text-decoration: none;
}

.marca .tablero {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  background:
    linear-gradient(45deg, var(--color-accent) 25%, transparent 25%) -6px 0,
    linear-gradient(-45deg, var(--color-accent) 25%, transparent 25%) -6px 0,
    linear-gradient(45deg, transparent 75%, var(--color-accent) 75%),
    linear-gradient(-45deg, transparent 75%, var(--color-accent) 75%);
  background-size: 13px 13px;
  background-color: var(--color-header-text);
}

nav.tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

nav.tabs a {
  display: inline-block;
  padding: 10px 16px;
  color: var(--color-header-text);
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 3px solid transparent;
  opacity: 0.85;
}

nav.tabs a:hover {
  opacity: 1;
}

nav.tabs a.activa {
  border-bottom-color: var(--color-accent);
  opacity: 1;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-header-text);
  color: var(--color-header-text);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}

/* ---------- Contenido ---------- */

main {
  padding: 32px 0 64px;
  min-height: 50vh;
}

.encabezado-pagina {
  margin-bottom: 24px;
}

.encabezado-pagina h1 {
  margin: 0 0 6px;
  font-size: 1.6rem;
}

.encabezado-pagina p {
  margin: 0;
  color: var(--color-text-muted);
}

.tarjeta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Tablas responsivas ---------- */

.tabla-envoltorio {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table.datos {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
}

table.datos th, table.datos td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

table.datos th {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

table.datos tbody tr:last-child td { border-bottom: none; }
table.datos tbody tr:hover { background: rgba(184, 137, 43, 0.06); }

.enlace-cr {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(184, 137, 43, 0.12);
  color: var(--color-accent-dark);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .enlace-cr { color: var(--color-accent); }
}

.enlace-cr:hover { background: rgba(184, 137, 43, 0.22); }

.vacio {
  padding: 40px 20px;
  text-align: center;
  color: var(--color-text-muted);
}

/* ---------- Barra de filtros ---------- */

.barra-filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}

.campo-filtro {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.campo-filtro label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
}

.campo-filtro select {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9rem;
  min-width: 180px;
}

.limpiar-filtros {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
}

.limpiar-filtros:hover { color: var(--color-text); }

.contador-resultados {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0 0 12px;
}

/* ---------- Encabezado de columna ordenable ---------- */

th.ordenable {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

th.ordenable:hover { color: var(--color-text); }

th.ordenable .flecha {
  display: inline-block;
  margin-left: 4px;
  opacity: 0.4;
}

th.ordenable[data-direccion="asc"] .flecha,
th.ordenable[data-direccion="desc"] .flecha {
  opacity: 1;
  color: var(--color-accent);
}

/* ---------- Encabezados de mes (agrupación cronológica) ---------- */

tr.mes-cabecera td {
  background: var(--color-bg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.82rem;
  color: var(--color-accent-dark);
  border-bottom: 2px solid var(--color-accent);
  white-space: normal;
}

@media (prefers-color-scheme: dark) {
  tr.mes-cabecera td { color: var(--color-accent); }
}

.mes-contador {
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  margin-left: 8px;
}

.mes-cabecera-tarjeta {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.82rem;
  color: var(--color-accent-dark);
  margin: 22px 0 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--color-accent);
}

@media (prefers-color-scheme: dark) {
  .mes-cabecera-tarjeta { color: var(--color-accent); }
}

.mes-cabecera-tarjeta:first-child { margin-top: 0; }

/* ---------- Botones de documento (Bases / PDF / Descargar) ---------- */

.enlace-doc {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(70, 110, 90, 0.12);
  color: #2f6e46;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .enlace-doc { color: #7fd39c; }
}

.enlace-doc:hover { background: rgba(70, 110, 90, 0.22); }

/* ---------- Tarjetas apiladas (torneos en pantallas angostas) ---------- */

.lista-tarjetas { display: none; }

.lista-tarjetas .item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
}

.lista-tarjetas .item .fila {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  font-size: 0.92rem;
  border-bottom: 1px dashed var(--color-border);
}

.lista-tarjetas .item .fila:last-child { border-bottom: none; }

.lista-tarjetas .item .etiqueta {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.lista-tarjetas .item .titulo {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

/* ---------- Secciones ELO ---------- */

.grid-elo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.grid-elo h2 {
  font-size: 1.05rem;
  margin: 0 0 12px;
}

@media (max-width: 720px) {
  .grid-elo { grid-template-columns: 1fr; }

  nav.tabs {
    display: none;
    flex-direction: column;
    width: 100%;
    padding-bottom: 12px;
  }

  nav.tabs.abierto { display: flex; }

  nav.tabs a { border-bottom: 1px solid rgba(255,255,255,0.1); border-left: 3px solid transparent; }
  nav.tabs a.activa { border-left-color: var(--color-accent); border-bottom-color: rgba(255,255,255,0.1); }

  .menu-toggle { display: inline-block; }

  .tabla-envoltorio { display: none; }
  .lista-tarjetas { display: block; }
}

/* ---------- Pie de página ---------- */

footer.sitio-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---------- Formularios (panel de administración) ---------- */

.form-admin {
  max-width: 560px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.form-admin label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 14px 0 6px;
  color: var(--color-text-muted);
}

.form-admin input[type="text"],
.form-admin input[type="date"],
.form-admin input[type="url"],
.form-admin input[type="password"],
.form-admin select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.95rem;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: none;
  background: var(--color-accent);
  color: #14161a;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn:hover { background: var(--color-accent-dark); }

.btn.secundario {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn.peligro {
  background: #b3392c;
  color: #fff;
}

.acciones-tabla { display: flex; gap: 8px; }
.acciones-tabla a, .acciones-tabla button { font-size: 0.85rem; padding: 6px 10px; }

.alerta {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 0.9rem;
}

.alerta.exito { background: rgba(60, 140, 90, 0.15); color: #2f6e46; }
.alerta.error { background: rgba(179, 57, 44, 0.12); color: #b3392c; }

@media (prefers-color-scheme: dark) {
  .alerta.exito { color: #7fd39c; }
  .alerta.error { color: #ef8f83; }
}

.barra-admin {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.tarjetas-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.tarjeta-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-decoration: none;
  color: var(--color-text);
}

.tarjeta-panel h3 { margin: 0 0 6px; font-size: 1.05rem; }
.tarjeta-panel p { margin: 0; color: var(--color-text-muted); font-size: 0.88rem; }