/* =====================================================================
   La Racha · app.css
   Limpio, moderno, ligeramente burocrático (§30). Mobile-first.
   Un color principal (azul de formulario oficial), rojo solo para
   errores/caducidad, verde solo para completado.
   ===================================================================== */

:root {
  --fondo: #f4f5f7;
  --papel: #ffffff;
  --tinta: #1b1f24;
  --tinta-suave: #5b6470;
  --linea: #dfe3e8;
  --principal: #1f4e79;
  --principal-hondo: #163a5a;
  --principal-suave: #e6eef6;
  --rojo: #b3261e;
  --rojo-suave: #fbeae8;
  --verde: #1e7b3a;
  --verde-suave: #e6f4ea;
  --ambar: #8a6d1d;
  --ambar-suave: #fff5d6;
  --radio: 10px;
  --sombra: 0 1px 2px rgba(27, 31, 36, .06), 0 6px 18px rgba(27, 31, 36, .05);
  --fuente: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--tinta);
  font-family: var(--fuente);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
h1 { font-size: 24px; line-height: 1.2; margin: 4px 0 10px; font-weight: 650; letter-spacing: -.01em; }
p { margin: 0 0 12px; }
a { color: var(--principal); }
.mono { font-family: var(--mono); }
.tenue { color: var(--tinta-suave); }
.pequeno { font-size: 13.5px; }
.eyebrow {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--tinta-suave); margin: 0 0 6px; font-weight: 600;
}

/* --- Cabecera y pie ---------------------------------------------- */
.cabecera {
  background: var(--papel);
  border-bottom: 1px solid var(--linea);
  padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.cabecera__marca { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--tinta); }
.cabecera__sello {
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em;
  border: 1.5px solid var(--principal); color: var(--principal);
  padding: 2px 6px; border-radius: 4px;
}
.cabecera__titulo { font-weight: 700; letter-spacing: -.01em; }
.cabecera__nav { display: flex; gap: 14px; font-size: 14px; }
.cabecera__nav a { text-decoration: none; color: var(--tinta); }
.cabecera__nav a:hover { text-decoration: underline; }

.contenedor { width: 100%; max-width: 640px; margin: 0 auto; padding: 16px 16px 32px; flex: 1 1 auto; }
.pie {
  border-top: 1px solid var(--linea); color: var(--tinta-suave);
  font-size: 12.5px; padding: 14px 16px; display: flex; justify-content: space-between; gap: 12px;
}
.pie a { color: inherit; }

/* --- Tarjetas ---------------------------------------------------- */
.tarjeta {
  background: var(--papel);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 18px 18px 16px;
  margin-bottom: 14px;
}
.tarjeta--centrada { text-align: center; }
.tarjeta--centrada .formulario { text-align: left; }
.tarjeta--ok { border-color: #bfe0c8; }
.tarjeta--ok h1 { color: var(--verde); }
.tarjeta--error { border-color: #efc1bc; }
.tarjeta--error h1 { color: var(--rojo); }
.tarjeta--final { border: 2px solid var(--verde); }
.tarjeta--prueba { border-style: dashed; border-color: #c8b46a; background: #fffdf5; }
.tarjeta--peligro { border-color: #efc1bc; background: #fffafa; }

/* --- Progreso ---------------------------------------------------- */
.progreso-grande { font-size: 44px; line-height: 1; margin: 4px 0 12px; font-variant-numeric: tabular-nums; color: var(--tinta-suave); }
.progreso-grande strong { color: var(--tinta); font-size: 56px; font-weight: 750; }
.progreso {
  height: 14px; background: var(--principal-suave); border-radius: 999px; overflow: hidden;
  border: 1px solid #d3dfeb;
}
.progreso__relleno { height: 100%; background: var(--principal); border-radius: 999px; transition: width .6s ease; min-width: 0; }
.progreso__relleno--ok { background: var(--verde); }
.progreso-detalle { margin: 8px 0 0; font-size: 14px; color: var(--tinta-suave); }
.racha { margin: 10px 0 0; font-size: 17px; }
.motivacion { margin: 8px 0 0; font-style: italic; color: var(--tinta-suave); }
.estado-dia { font-size: 17px; margin-bottom: 12px; }
.estado-dia--ok { color: var(--verde); font-weight: 600; }

/* --- Botones ----------------------------------------------------- */
.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 10px 18px; border-radius: 8px;
  border: 1px solid var(--linea); background: var(--papel); color: var(--tinta);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover { border-color: #c5ccd4; background: #f9fafb; }
.btn-primario { background: var(--principal); border-color: var(--principal); color: #fff; }
.btn-primario:hover { background: var(--principal-hondo); border-color: var(--principal-hondo); }
.btn-bloque { display: flex; width: 100%; margin-top: 6px; }
.btn-mini { min-height: 36px; padding: 6px 12px; font-size: 14px; }
.btn-peligro { background: var(--rojo); border-color: var(--rojo); color: #fff; }
.btn-prueba { background: #fff3c4; border-color: #e3cf7a; color: #5b4a05; }
.enlace { font-size: 14px; }

/* --- Formularios ------------------------------------------------- */
.formulario { margin-top: 6px; }
.campo { margin-bottom: 14px; }
.campo label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 5px; color: var(--tinta); }
.campo label .eyebrow { display: block; margin-bottom: 2px; }
.campo input[type="text"], .campo input[type="password"], .campo input[type="date"], .campo input[type="number"], .campo select {
  width: 100%; min-height: 46px; padding: 10px 12px;
  border: 1px solid #c9d0d8; border-radius: 8px; background: #fff; color: var(--tinta);
  font: inherit; font-size: 16px;
}
.campo input:focus { outline: none; border-color: var(--principal); box-shadow: 0 0 0 3px rgba(31, 78, 121, .18); }
.campo--grupo { border: 1px solid var(--linea); border-radius: 8px; padding: 10px 12px 4px; margin: 0 0 14px; }
.campo--grupo legend { font-size: 13.5px; font-weight: 600; padding: 0 6px; }
.partes { display: flex; gap: 8px; }
.parte { flex: 1 1 0; margin-bottom: 8px; }
.parte label { font-weight: 500; color: var(--tinta-suave); }
.parte input { width: 100%; min-height: 46px; padding: 10px 8px; border: 1px solid #c9d0d8; border-radius: 8px; font: inherit; font-size: 16px; text-align: center; }
.campo--extra { background: var(--principal-suave); border-radius: 8px; padding: 12px; }
.opciones { display: grid; gap: 6px; }
.opcion { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: #fff; border: 1px solid #c9d0d8; border-radius: 8px; cursor: pointer; }
.opcion input { width: 18px; height: 18px; margin: 0; }
.input-otp { text-align: center; font-family: var(--mono); font-size: 28px !important; letter-spacing: .3em; }
.input-mini { min-height: 36px; padding: 6px 10px; border: 1px solid #c9d0d8; border-radius: 8px; font: inherit; font-size: 14px; width: 110px; }
.input-mini--ancho { width: 200px; }
.fila-botones { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* --- Alertas ----------------------------------------------------- */
.alerta { padding: 12px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 15px; border: 1px solid transparent; }
.alerta--error { background: var(--rojo-suave); color: var(--rojo); border-color: #efc1bc; font-weight: 600; }
.alerta--ok { background: var(--verde-suave); color: var(--verde); border-color: #bfe0c8; }
.alerta--prueba { background: var(--ambar-suave); color: var(--ambar); border-color: #ecd79a; }

/* --- OTP --------------------------------------------------------- */
.otp-contador { margin: 6px 0 16px; }
.otp-contador__num {
  display: block; font-size: 72px; line-height: 1; font-weight: 750; font-variant-numeric: tabular-nums;
  color: var(--principal); transition: color .2s ease;
}
.otp-contador__num.urgente { color: var(--rojo); }
.otp-contador__lbl { display: block; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--tinta-suave); }
.otp-contador__barra { height: 8px; background: var(--principal-suave); border-radius: 999px; overflow: hidden; margin-top: 10px; }
.otp-contador__relleno { height: 100%; background: var(--principal); transition: width 1s linear; }
.otp-contador__relleno.urgente { background: var(--rojo); }

/* --- Sudoku ------------------------------------------------------ */
.tarjeta--juego { padding-left: 12px; padding-right: 12px; }
.sudoku {
  display: grid; grid-template-columns: repeat(9, 1fr);
  border: 2px solid var(--tinta); border-radius: 4px; overflow: hidden;
  background: var(--tinta); gap: 1px;
  aspect-ratio: 1; width: 100%; max-width: 480px; margin: 0 auto 14px;
  user-select: none;
}
.sd-celda { position: relative; background: #fff; display: flex; align-items: center; justify-content: center; min-width: 0; }
.sd-celda.sd-bd { border-right: 2px solid var(--tinta); }
.sd-celda.sd-bb { border-bottom: 2px solid var(--tinta); }
.sd-celda.fija { background: #eef1f4; }
.sd-celda.fija span { font-weight: 700; font-size: clamp(16px, 4.6vw, 24px); color: var(--tinta); }
.sd-celda input {
  width: 100%; height: 100%; border: 0; background: transparent; text-align: center;
  font: inherit; font-size: clamp(16px, 4.6vw, 24px); color: var(--principal); font-weight: 600;
  caret-color: transparent; padding: 0; outline: none;
}
.sd-celda.activa { background: #dbe7f3; }
.sd-celda.activa input { box-shadow: inset 0 0 0 2px var(--principal); }
.sd-celda.igual { background: #eef3f8; }
.teclado {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px;
  max-width: 480px; margin: 0 auto 14px;
}
.teclado__tecla {
  appearance: none; min-height: 46px; border: 1px solid #c9d0d8; border-radius: 8px;
  background: #fff; font: inherit; font-size: 20px; font-weight: 600; color: var(--principal); cursor: pointer;
}
.teclado__tecla:active { background: var(--principal-suave); }
.teclado__tecla--borrar { color: var(--rojo); }

/* --- Datos y tablas ---------------------------------------------- */
.datos { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; margin: 6px 0 10px; }
.datos > div { border-top: 1px solid var(--linea); padding-top: 8px; min-width: 0; }
.datos dt { font-size: 12.5px; color: var(--tinta-suave); }
.datos dd { margin: 2px 0 0; font-weight: 600; font-variant-numeric: tabular-nums; word-break: break-word; }
.tabla { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 6px 0 4px; display: block; overflow-x: auto; }
.tabla th, .tabla td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--linea); vertical-align: top; white-space: nowrap; }
.tabla th { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--tinta-suave); }
.tabla--eventos td:last-child { white-space: normal; word-break: break-all; }
.codigo-final {
  font-size: 30px; letter-spacing: .12em; padding: 14px; border: 2px dashed var(--verde);
  border-radius: 8px; background: var(--verde-suave); color: var(--verde); margin: 4px 0 16px; word-break: break-all;
}

/* --- Historial --------------------------------------------------- */
.timeline { list-style: none; margin: 0; padding: 0; font-size: 14.5px; }
.timeline__fecha { font-weight: 700; margin: 12px 0 4px; padding-bottom: 4px; border-bottom: 1px solid var(--linea); }
.timeline__item { padding: 4px 0 4px 10px; border-left: 3px solid var(--linea); margin: 2px 0; }
.timeline__item--day_completed, .timeline__item--game_completed, .timeline__item--final_unlocked { border-left-color: var(--verde); }
.timeline__item--form_invalid, .timeline__item--otp_invalid, .timeline__item--otp_expired, .timeline__item--game_check_failed, .timeline__item--streak_reset, .timeline__item--otp_send_failed { border-left-color: var(--rojo); }
.timeline__item--form_valid, .timeline__item--otp_valid, .timeline__item--otp_sent { border-left-color: var(--principal); }

/* --- Panel y barra de prueba ------------------------------------- */
.admin-nav { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.admin-nav a { text-decoration: none; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--linea); background: var(--papel); color: var(--tinta); font-size: 14px; }
.admin-nav a.activo { background: var(--principal); border-color: var(--principal); color: #fff; }
.barra-prueba {
  background: #fff3c4; border-bottom: 1px solid #e3cf7a; color: #5b4a05;
  padding: 8px 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 13.5px;
}
.barra-prueba__quien { font-weight: 700; letter-spacing: .06em; text-transform: uppercase; font-size: 12px; }
.barra-prueba__form { margin: 0; }
.barra-prueba__enlace { margin-left: auto; color: inherit; }
.fila--form_invalid td, .fila--otp_invalid td, .fila--otp_expired td, .fila--game_check_failed td, .fila--streak_reset td { color: var(--rojo); }
.fila--day_completed td, .fila--final_unlocked td { color: var(--verde); }

/* --- Configuración inicial --------------------------------------- */
.aviso-exacto {
  background: var(--ambar-suave);
  border: 1px solid #ecd79a;
  color: #6b5410;
  border-radius: 8px;
  padding: 12px 14px;
  margin: 14px 0;
  font-size: 14.5px;
}
.aviso-exacto p { margin: 0 0 6px; }
.aviso-exacto p:last-child { margin-bottom: 0; }
.grupo-setup {
  border: 1px solid var(--linea);
  border-radius: 10px;
  padding: 12px 14px 2px;
  margin: 0 0 14px;
}
.grupo-setup legend {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--tinta-suave); font-weight: 700; padding: 0 6px;
}
.campo--mal input { border-color: var(--rojo); background: var(--rojo-suave); }
.campo-error { margin: 5px 0 0; font-size: 13px; color: var(--rojo); font-weight: 600; }

.revision { margin: 4px 0 0; }
.revision__grupo { margin-bottom: 14px; }
.revision__fila {
  display: flex; justify-content: space-between; gap: 12px;
  border-top: 1px solid var(--linea); padding: 8px 0;
}
.revision__fila dt { font-size: 13.5px; color: var(--tinta-suave); flex: 0 0 auto; }
.revision__fila dd { margin: 0; font-weight: 600; text-align: right; word-break: break-word; }

/* --- Sala de juegos ---------------------------------------------- */
.juego-ficha h2 { margin: 0 0 6px; font-size: 20px; }
.juego-ficha__acciones { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 10px; }
.juego-pie {
  display: flex; flex-direction: column; gap: 10px;
  border-top: 1px solid var(--linea); margin-top: 14px; padding-top: 12px;
}
.detalle-anterior { margin: 10px 0; font-size: 14px; }
.detalle-anterior summary { cursor: pointer; color: var(--tinta-suave); }

@media (min-width: 560px) {
  h1 { font-size: 28px; }
  .contenedor { padding-top: 24px; }
  .tarjeta { padding: 22px 24px 20px; }
  .datos { grid-template-columns: 1fr 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .progreso__relleno, .otp-contador__relleno { transition: none; }
}