/* =============================================================================
   BSides Colombia 2026 — CTF de IA
   Dark theme, two-column layout
   ============================================================================= */

/* -- Tokens ----------------------------------------------------------------- */
:root {
  --bg:              #0a0a0b;
  --surface:         #141416;
  --surface-2:       #1c1c1f;
  --surface-3:       #252529;
  --border:          #27272a;
  --border-active:   #3f3f46;

  --text:            #fafafa;
  --text-sec:        #a1a1aa;
  --text-muted:      #71717a;

  --red:             #ef4444;
  --red-hover:       #dc2626;
  --red-dim:         rgba(239, 68, 68, 0.12);
  --green:           #22c55e;
  --green-dim:       rgba(34, 197, 94, 0.12);
  --amber:           #f59e0b;
  --amber-dim:       rgba(245, 158, 11, 0.12);
  --blood:           #dc2626;

  --font:            Inter, system-ui, -apple-system, sans-serif;
  --mono:            'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --radius:          8px;
  --radius-sm:       6px;
  --radius-xs:       4px;

  --header-h:        64px;
}

/* -- Reset ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* -- Header ----------------------------------------------------------------- */
#ctf-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
  padding: 0 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.header-izquierda h1 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.header-subtitulo {
  color: var(--red);
  font-weight: 500;
}

/* -- Countdown -------------------------------------------------------------- */
.countdown {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
}

.countdown-unidad {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 44px;
}

.countdown-valor {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.countdown-etiqueta {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.countdown-separador {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-muted);
  padding-bottom: 14px;
}

.countdown.terminado .countdown-valor {
  color: var(--red);
}

/* -- Participant area ------------------------------------------------------- */
#participante-area {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.apodo-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
}

/* -- Main layout ------------------------------------------------------------ */
#main-contenido {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  padding: 24px 20px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  min-height: calc(100vh - var(--header-h));
  align-items: start;
}

#columna-retos {
  min-width: 0;
}

#columna-marcador {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
}

/* -- Section headings ------------------------------------------------------- */
.seccion-titulo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.seccion-titulo h2 {
  font-size: 16px;
  font-weight: 700;
}

/* -- Challenge grid --------------------------------------------------------- */
.grid-retos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.reto-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  position: relative;
}

.reto-card:hover {
  border-color: var(--border-active);
  transform: translateY(-1px);
}

.reto-card.activo {
  border-color: var(--red);
  box-shadow: 0 0 0 1px var(--red);
}

.reto-card.resuelto {
  border-left: 3px solid var(--green);
}

.reto-card.resuelto::after {
  content: "✅";
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 14px;
}

.reto-card__categoria {
  display: inline-block;
  padding: 2px 7px;
  background: var(--red-dim);
  color: var(--red);
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-weight: 700;
  font-family: var(--mono);
  margin-bottom: 8px;
}

.reto-card.resuelto .reto-card__categoria {
  background: var(--green-dim);
  color: var(--green);
}

.reto-card__titulo {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
}

.reto-card__puntos {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--mono);
}

.reto-card.primer-acceso-disponible .reto-card__puntos::after {
  content: " +25🩸";
  color: var(--blood);
}

/* -- Challenge panel -------------------------------------------------------- */
#panel-reto {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  animation: slideDown 0.15s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-reto-cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.panel-reto-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.categoria-badge {
  padding: 3px 8px;
  background: var(--red-dim);
  color: var(--red);
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-weight: 700;
  font-family: var(--mono);
}

.puntos-grande {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-sec);
  font-family: var(--mono);
}

.estado-resuelto {
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
}

#panel-titulo-reto {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.panel-descripcion {
  color: var(--text-sec);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* First blood notice */
.primer-acceso-aviso {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.3);
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  color: var(--text-sec);
}

.primer-acceso-badge {
  font-weight: 700;
  color: var(--blood);
}

/* Hints */
.pistas-titulo {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-sec);
}

.pista-item {
  padding: 10px 14px;
  background: var(--amber-dim);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-sec);
}

.btn-pedir-pista {
  margin-bottom: 16px;
}

/* Prompt section */
.prompt-seccion {
  margin-bottom: 16px;
}

.prompt-etiqueta {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.prompt-etiqueta-hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 12px;
}

.prompt-area {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  padding: 12px;
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.15s;
  line-height: 1.5;
}

.prompt-area:focus {
  outline: none;
  border-color: var(--red);
}

.prompt-area::placeholder {
  color: var(--text-muted);
}

.prompt-acciones {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

/* Model response */
.respuesta-titulo {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-sec);
}

.respuesta-modelo {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 320px;
  overflow-y: auto;
  color: var(--text-sec);
  margin-bottom: 16px;
}

/* Flag section */
.bandera-seccion {
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.bandera-etiqueta {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.bandera-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.bandera-hint code {
  font-family: var(--mono);
  color: var(--red);
  background: var(--red-dim);
  padding: 1px 5px;
  border-radius: 3px;
}

.bandera-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.bandera-input {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  padding: 8px 12px;
  transition: border-color 0.15s;
}

.bandera-input:focus {
  outline: none;
  border-color: var(--red);
}

.bandera-input::placeholder {
  color: var(--text-muted);
}

.feedback-correcto {
  padding: 10px 14px;
  background: var(--green-dim);
  border: 1px solid var(--green);
  border-radius: var(--radius-sm);
  color: var(--green);
  font-weight: 600;
  font-size: 14px;
}

.feedback-incorrecto {
  padding: 10px 14px;
  background: var(--red-dim);
  border: 1px solid var(--red);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 13px;
}

/* -- Leaderboard ------------------------------------------------------------ */
.marcador-cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 6px;
}

.marcador-cabecera h2 {
  font-size: 15px;
  font-weight: 700;
}

.marcador-actualizacion {
  font-size: 11px;
  color: var(--text-muted);
}

.marcador-tabla {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.marcador-tabla th {
  text-align: left;
  padding: 6px 10px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

.marcador-tabla td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text-sec);
}

.marcador-tabla tr:last-child td {
  border-bottom: none;
}

.marcador-tabla tr:hover td {
  background: var(--surface-2);
}

.mi-fila td {
  color: var(--text);
  font-weight: 600;
}

.rango-celda {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 12px;
}

.apodo-celda {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.puntos-celda {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--text);
}

.primer-acceso-celda {
  color: var(--blood);
  font-weight: 700;
}

/* Mis estadísticas */
.mis-estadisticas {
  margin-top: 20px;
  padding: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.mis-estadisticas h3 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-sec);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-valor {
  font-size: 22px;
  font-weight: 800;
  font-family: var(--mono);
  color: var(--text);
}

.stat-etiqueta {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* -- Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  white-space: nowrap;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primario {
  background: var(--red);
  color: #fff;
}

.btn-primario:hover:not(:disabled) {
  background: var(--red-hover);
}

.btn-secundario {
  background: var(--surface-3);
  color: var(--text-sec);
  border: 1px solid var(--border);
}

.btn-secundario:hover:not(:disabled) {
  background: var(--surface-2);
  color: var(--text);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}

.btn-bloque {
  width: 100%;
}

.btn-cerrar-panel {
  font-size: 12px;
  padding: 5px 10px;
}

/* -- Form fields ------------------------------------------------------------ */
.campo-grupo {
  margin-bottom: 16px;
}

.campo-etiqueta {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.campo-input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 10px 12px;
  transition: border-color 0.15s;
}

.campo-input:focus {
  outline: none;
  border-color: var(--red);
}

.campo-input::placeholder {
  color: var(--text-muted);
}

.campo-contador {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-muted);
  text-align: right;
}

.error-mensaje {
  padding: 8px 12px;
  background: var(--red-dim);
  border: 1px solid var(--red);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 13px;
  margin-bottom: 12px;
}

/* -- Modal ------------------------------------------------------------------ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

.modal-contenido {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 420px;
  margin: 16px;
  animation: modalEntra 0.2s ease;
}

@keyframes modalEntra {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-icono {
  font-size: 36px;
  text-align: center;
  margin-bottom: 12px;
}

.modal-titulo {
  font-size: 20px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 6px;
}

.modal-descripcion {
  text-align: center;
  color: var(--text-sec);
  font-size: 13px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.modal-aviso {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 14px;
}

.modal-link {
  color: var(--accent);
  text-decoration: none;
}
.modal-link:hover { text-decoration: underline; }

.campo-codigo {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 18px;
  text-align: center;
  font-family: var(--font-mono);
}

.codigo-recuperacion-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 16px 0;
}

.codigo-valor {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
}

/* -- Toast notification ----------------------------------------------------- */
#notificacion {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: toastEntra 0.2s ease;
  max-width: 340px;
}

@keyframes toastEntra {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

#notificacion.exito {
  border-color: var(--green);
  color: var(--green);
}

#notificacion.error {
  border-color: var(--red);
  color: var(--red);
}

#notificacion.info {
  border-color: var(--border-active);
  color: var(--text);
}

/* -- Spinners --------------------------------------------------------------- */
.spinner-contenedor {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px;
  color: var(--text-muted);
  font-size: 13px;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner-sm {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* -- Misc ------------------------------------------------------------------- */
.oculto { display: none !important; }

/* Progress badge in heading */
.progreso-retos {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  font-family: var(--mono);
}

/* CTF terminado banner */
.ctf-terminado-banner {
  background: var(--red-dim);
  border-bottom: 1px solid var(--red);
  color: var(--red);
  text-align: center;
  padding: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Filtros */
.filtros-categoria {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.filtro-btn {
  padding: 3px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.1s;
}

.filtro-btn.activo {
  background: var(--red-dim);
  border-color: var(--red);
  color: var(--red);
}

/* -- Responsive ------------------------------------------------------------- */
@media (max-width: 900px) {
  #main-contenido {
    grid-template-columns: 1fr;
  }

  #columna-marcador {
    position: static;
    max-height: none;
    overflow-y: visible;
  }

  #columna-marcador {
    order: -1;
  }
}

@media (max-width: 600px) {
  #ctf-header {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

  .header-izquierda h1 {
    font-size: 13px;
  }

  .countdown-valor {
    font-size: 16px;
  }

  #main-contenido {
    padding: 16px;
  }

  .grid-retos {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-contenido {
    padding: 24px 20px;
  }
}