/* ═══════════════════════════════════════════════════════════════════════════
   styles.css — Hoja de estilos principal
   App: Sistema de Recompensas Académicas
   Paleta: Negros profundos + verde #6ABF50 y variaciones
   Dispositivo objetivo: Motorola G72 (393 × 873 px lógicos, AMOLED)
   ═══════════════════════════════════════════════════════════════════════════ */


/* ── 1. Variables CSS (Design Tokens) ──────────────────────────────────────── */
:root {
  /* -- Colores base: oscuro profundo para pantalla AMOLED -- */
  --bg-void:        #000000;   /* negro puro para AMOLED (ahorro de batería)  */
  --bg-base:        #0a0a0a;   /* fondo general de la app                      */
  --bg-card:        #111111;   /* superficies de tarjetas                       */
  --bg-card-hover:  #161616;   /* hover / press de tarjetas                     */
  --bg-elevated:    #1a1a1a;   /* elementos elevados (modales, campos)          */
  --bg-input:       #141414;   /* fondo de inputs                               */
  --border:         #222222;   /* bordes sutiles                                */
  --border-active:  #2e2e2e;   /* bordes en estado activo                       */

  /* -- Verde principal y variaciones -- */
  --green:          #6ABF50;   /* verde base (el branding principal)            */
  --green-light:    #82d468;   /* variación más clara para hovers               */
  --green-dark:     #4e9039;   /* variación más oscura para pressed             */
  --green-dim:      #6abf5020; /* verde muy transparente para fondos sutiles    */
  --green-glow:     #6abf5040; /* glow/aura del verde para efectos              */
  --green-text:     #8fd978;   /* verde para texto sobre fondo oscuro           */

  /* -- Dorado: nota 10 (excepción al verde, para jerarquía visual) -- */
  --gold:           #f0c040;
  --gold-dim:       #f0c04015;

  /* -- Colores semánticos -- */
  --danger:         #e05252;   /* rojo para retiros y errores                   */
  --danger-dim:     #e0525218;
  --success:        var(--green);
  --warning:        #d4a017;

  /* -- Tipografía -- */
  --text-primary:   #f0f0f0;   /* texto principal (casi blanco, no duro)        */
  --text-secondary: #888888;   /* texto secundario / labels                     */
  --text-muted:     #555555;   /* texto muy silencioso                          */
  --text-inverse:   #0a0a0a;   /* texto sobre fondo verde                       */

  /* -- Fuentes -- */
  --font-display:   'Space Grotesk', sans-serif;  /* títulos, montos, branding */
  --font-body:      'Inter', sans-serif;           /* cuerpo, labels, UI        */
  --font-mono:      'Space Grotesk', monospace;    /* montos numéricos          */

  /* -- Espaciado base (sistema de 4px) -- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;

  /* -- Radios de borde -- */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-pill: 999px;

  /* -- Sombras y brillos -- */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.6);
  --shadow-btn:  0 2px 12px rgba(0,0,0,0.4);
  --glow-green:  0 0 20px var(--green-glow), 0 0 40px var(--green-dim);
  --glow-gold:   0 0 20px rgba(240,192,64,0.25);

  /* -- Transiciones -- */
  --ease-fast:   150ms ease;
  --ease-normal: 250ms ease;
  --ease-slow:   400ms ease;
  --ease-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* -- Tamaño de íconos de Material Symbols -- */
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}


/* ── 2. Reset y base global ────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent; /* elimina el flash azul en mobile */
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  /* Previene el zoom al hacer focus en inputs en iOS */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-base);
  color: var(--text-primary);
  min-height: 100dvh;           /* dvh: altura dinámica, respeta la barra del navegador */
  overflow-x: hidden;
  position: relative;
}

/* Elimina el outline nativo y reemplaza con uno accesible personalizado */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Tipografía de íconos de Material Symbols */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 1.25rem;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}


/* ── 3. Canvas de partículas (fondo animado) ───────────────────────────────── */
#particles-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;   /* no interfiere con los clics del usuario */
  z-index: 0;
  opacity: 0.45;
}


/* ── 4. Estructura principal de la app ────────────────────────────────────── */
.app-shell {
  position: relative;
  z-index: 1;             /* sobre el canvas de partículas */
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  max-width: 430px;       /* ancho máximo para pantallas grandes */
  margin: 0 auto;
  padding-bottom: env(safe-area-inset-bottom, 16px); /* respeta el home indicator en iOS */
}


/* ── 5. Header ─────────────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-5) var(--space-4);
  /* Borde inferior con gradiente para separar sin ser agresivo */
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(10,10,10,0.9) 0%, transparent 100%);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Header de sub-páginas (con botón de volver) */
.app-header--sub {
  background: linear-gradient(180deg, rgba(10,10,10,0.95) 0%, rgba(10,10,10,0.0) 100%);
}

.header-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--green-dim);
  border: 1px solid var(--green-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Animación de pulso en el logo */
  animation: logoPulse 4s ease-in-out infinite;
}

.header-icon {
  color: var(--green);
  font-size: 1.25rem;
}

/* Logo de la app dentro de .header-logo (imagen 64x64 escalada a 28x28) */
.logo-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
}

.header-icon-right {
  color: var(--text-muted);
  font-size: 1.5rem;
  margin-left: auto;
}

@keyframes logoPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--green-glow); }
  50%       { box-shadow: 0 0 0 6px transparent; }
}

.header-titles {
  flex: 1;
}

.app-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.app-title--sm {
  font-size: 1.05rem;
}

.app-subtitle {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-top: 1px;
}

/* Indicador de estado del servidor */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: background var(--ease-normal);
}

.status-dot.online  { background: var(--green); box-shadow: 0 0 6px var(--green-glow); }
.status-dot.offline { background: var(--danger); }

/* Botón de volver (sub-páginas) */
.btn-back {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--ease-fast), border-color var(--ease-fast), transform var(--ease-fast);
}

.btn-back:active {
  background: var(--bg-card-hover);
  transform: scale(0.94);
}

.btn-back .material-symbols-outlined {
  font-size: 1.1rem;
}


/* ── 6. Tarjeta de saldo principal ─────────────────────────────────────────── */
.main-content {
  flex: 1;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.balance-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  overflow: hidden;
  /* Sombra profunda para sensación de elevación */
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,0.04);
  /* Animación de entrada desde abajo */
  animation: slideUp 0.5s var(--ease-bounce) both;
}

/* Efecto de brillo superior — la firma visual de la app */
.card-glow {
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 100px;
  background: radial-gradient(ellipse at center, var(--green-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  /* Pulso suave del glow */
  animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50%       { opacity: 1;   transform: translateX(-50%) scale(1.15); }
}

.balance-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.label-icon {
  color: var(--green);
  font-size: 1rem;
}

/* Monto principal */
.balance-amount-wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  line-height: 1;
  margin-bottom: var(--space-5);
}

.currency-prefix {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  color: var(--green);
  margin-top: 6px;  /* alineación óptica con el número grande */
}

.balance-amount {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  /* Transición suave al cambiar el valor */
  transition: color var(--ease-normal);
}

/* El monto se pone rojo si el saldo es negativo */
.balance-amount.negative {
  color: var(--danger);
  text-shadow: 0 0 20px rgba(224,82,82,0.3);
}

.currency-suffix {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  align-self: flex-end;
  margin-bottom: 8px;
}

/* Divider decorativo */
.card-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin-bottom: var(--space-4);
}

/* Estadísticas en la parte inferior de la tarjeta */
.balance-stats {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.stat-icon {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.stat-item:first-child .stat-icon { color: var(--green-text); }
.stat-item:last-child  .stat-icon { color: var(--danger); }

.stat-data {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-separator {
  width: 1px;
  height: 30px;
  background: var(--border);
  flex-shrink: 0;
}


/* ── 7. Texto motivacional ─────────────────────────────────────────────────── */
.motivational-text {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
  font-style: italic;
  opacity: 0;
  animation: fadeIn 0.6s ease 0.8s forwards;
}


/* ── 8. Escala de recompensas ──────────────────────────────────────────────── */
.rewards-scale {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  animation: slideUp 0.5s var(--ease-bounce) 0.15s both;
}

.scale-title {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.scale-grid {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.scale-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.scale-grade {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--green);
}

.scale-item--gold .scale-grade {
  color: var(--gold);
}

.scale-amount {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.scale-separator {
  width: 1px;
  height: 28px;
  background: var(--border);
}


/* ── 9. Footer de acciones principales ────────────────────────────────────── */
.action-footer {
  padding: var(--space-4) var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  animation: slideUp 0.5s var(--ease-bounce) 0.3s both;
}

.btn-row {
  display: flex;
  gap: var(--space-3);
  width: 100%;
}

.btn-row .btn {
  flex: 1;
}


/* ── 10. Sistema de botones ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--ease-fast),
    color var(--ease-fast),
    transform var(--ease-bounce),
    box-shadow var(--ease-normal);
  position: relative;
  overflow: hidden;
  /* Efecto de ripple al presionar */
  -webkit-tap-highlight-color: transparent;
}

/* Efecto ripple genérico */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity var(--ease-fast);
  border-radius: inherit;
}

.btn:active::after  { opacity: 1; }
.btn:active         { transform: scale(0.96); }

/* Variante: ancho completo */
.btn--full { width: 100%; }

/* Variante: tamaño grande */
.btn--lg   { padding: var(--space-5) var(--space-6); font-size: 1rem; }

/* Variante: acento (verde — ingresar, confirmar) */
.btn--accent {
  background: var(--green);
  color: var(--text-inverse);
  border-color: var(--green-light);
  box-shadow: 0 4px 20px var(--green-glow);
}

.btn--accent:hover,
.btn--accent:focus-visible {
  background: var(--green-light);
  box-shadow: 0 6px 28px var(--green-glow);
}

/* Variante: primario (oscuro — retirar) */
.btn--primary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-active);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--bg-card-hover);
  border-color: var(--border-active);
}

/* Variante: ghost (transparente — historial) */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* Variante: danger (rojo — confirmar retiro con saldo negativo) */
.btn--danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn--danger:hover { background: #c94444; }

/* Estado deshabilitado */
.btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn .material-symbols-outlined {
  font-size: 1.1rem;
}


/* ── 11. Pantalla de carga ─────────────────────────────────────────────────── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  transition: opacity var(--ease-slow), visibility var(--ease-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-spinner {
  position: relative;
  width: 48px;
  height: 48px;
}

/* Anillo giratorio del spinner */
.spinner-ring {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  animation: spin 0.9s linear infinite;
}

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

/* Spinner para el historial */
.hist-loading .loading-spinner {
  width: 48px;
  height: 48px;
  position: relative;
}

.loading-text {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}


/* ── 12. Toast de notificaciones ──────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--space-8) + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-pill);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ease-normal), transform var(--ease-bounce);
  box-shadow: var(--shadow-card);
  max-width: calc(100vw - 40px);
  white-space: normal;
  text-align: center;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success { border-color: var(--green); color: var(--green-text); }
.toast.error   { border-color: var(--danger); color: var(--danger); }


/* ── 13. Formularios (páginas de ingreso y retiro) ────────────────────────── */
.form-container {
  flex: 1;
  padding: var(--space-5) var(--space-5) var(--space-8);
  display: flex;
  flex-direction: column;
}

.form-container form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Grupo de campo */
.field-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  animation: slideUp 0.4s var(--ease-bounce) both;
}

/* Escalonado de animaciones de campos */
.field-group:nth-child(1) { animation-delay: 0.05s; }
.field-group:nth-child(2) { animation-delay: 0.10s; }
.field-group:nth-child(3) { animation-delay: 0.15s; }
.field-group:nth-child(4) { animation-delay: 0.20s; }

.field-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.field-label .material-symbols-outlined {
  font-size: 1rem;
  color: var(--green);
}

.required-mark {
  color: var(--green);
  margin-left: 2px;
}

.field-optional {
  color: var(--text-muted);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.72rem;
}

/* Input de texto */
.field-input {
  width: 100%;
  padding: var(--space-4) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;         /* >= 16px para evitar zoom en iOS */
  font-weight: 400;
  outline: none;
  transition: border-color var(--ease-fast), box-shadow var(--ease-fast), background var(--ease-fast);
  -webkit-appearance: none;
  appearance: none;
}

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

.field-input:focus {
  border-color: var(--green);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px var(--green-dim);
}

/* Input con error */
.field-input.has-error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-dim);
}

.field-error {
  font-size: 0.75rem;
  color: var(--danger);
  min-height: 1rem;
  display: block;
  transition: opacity var(--ease-fast);
}

/* Ocultar arrows en input tipo número */
.field-input[type="number"]::-webkit-inner-spin-button,
.field-input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}


/* ── 14. Selector de nota (botones 8 / 9 / 10) ────────────────────────────── */
.nota-selector {
  display: flex;
  gap: var(--space-3);
}

.nota-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-2);
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition:
    background var(--ease-fast),
    border-color var(--ease-fast),
    transform var(--ease-bounce),
    box-shadow var(--ease-normal);
  position: relative;
  overflow: hidden;
}

.nota-btn:active {
  transform: scale(0.94);
}

/* Estado seleccionado */
.nota-btn[aria-pressed="true"] {
  background: var(--green-dim);
  border-color: var(--green);
  box-shadow: 0 0 0 1px var(--green), var(--glow-green);
}

.nota-btn--gold[aria-pressed="true"] {
  background: var(--gold-dim);
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold), var(--glow-gold);
}

.nota-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.nota-btn[aria-pressed="true"] .nota-num { color: var(--green-text); }
.nota-btn--gold[aria-pressed="true"] .nota-num { color: var(--gold); }

.nota-reward {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nota-btn[aria-pressed="true"] .nota-reward { color: var(--green); }
.nota-btn--gold[aria-pressed="true"] .nota-reward { color: var(--gold); }


/* ── 15. Preview de recompensa (página de ingreso) ────────────────────────── */
.reward-preview {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 var(--space-5) var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--green-dim);
  border: 1px solid var(--green-glow);
  border-radius: var(--radius-lg);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
  transform: translateY(-4px);
  transition: opacity var(--ease-normal), transform var(--ease-normal),
              max-height var(--ease-normal), margin var(--ease-normal),
              padding var(--ease-normal);
  pointer-events: none;
}

.reward-preview.visible {
  opacity: 1;
  max-height: 80px;
  margin-bottom: var(--space-1);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  transform: translateY(0);
  pointer-events: auto;
}

.reward-preview-icon {
  color: var(--green);
  font-size: 1.4rem;
}

.reward-preview-label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.reward-preview-amount {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--green-text);
}


/* ── 16. Zona de carga de imagen ───────────────────────────────────────────── */
.image-upload-zone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-input);
  overflow: hidden;
  transition: border-color var(--ease-fast), background var(--ease-fast);
  cursor: pointer;
  min-height: 110px;
}

.image-upload-zone:hover,
.image-upload-zone:focus-within {
  border-color: var(--green);
  background: var(--green-dim);
}

/* Input oculto real de archivo */
.file-input-hidden {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6);
  pointer-events: none;
}

.upload-icon {
  font-size: 2rem;
  color: var(--text-muted);
}

.upload-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.upload-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Preview de la imagen */
.upload-preview {
  position: relative;
}

.preview-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.remove-img-btn {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0,0,0,0.7);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 3;
  transition: background var(--ease-fast);
}

.remove-img-btn:active { background: rgba(0,0,0,0.9); }

.remove-img-btn .material-symbols-outlined {
  font-size: 1rem;
}


/* ── 17. Saldo disponible en página de retiro ──────────────────────────────── */
.current-balance-display {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 var(--space-5) var(--space-1);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  animation: slideDown 0.4s var(--ease-bounce) both;
}

.cbt-icon {
  color: var(--green);
  font-size: 1.5rem;
}

.cbt-label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cbt-amount {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cbt-amount.negative {
  color: var(--danger);
}

/* Input de dinero con prefijo "$" */
.money-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.money-prefix {
  position: absolute;
  left: var(--space-4);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--green);
  pointer-events: none;
  z-index: 1;
}

.field-input--money {
  padding-left: calc(var(--space-4) + 16px);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Montos rápidos */
.quick-amounts {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.quick-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

.quick-btn {
  padding: var(--space-3) var(--space-2);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--ease-fast), color var(--ease-fast), border-color var(--ease-fast), transform var(--ease-fast);
}

.quick-btn:active {
  transform: scale(0.94);
  background: var(--green-dim);
  border-color: var(--green);
  color: var(--green-text);
}


/* ── 18. Modal de confirmación ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn var(--ease-fast) both;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
  animation: slideUp 0.35s var(--ease-bounce) both;
  box-shadow: 0 -4px 40px rgba(0,0,0,0.6);
}

.modal-warn-icon {
  font-size: 2.5rem;
  color: var(--warning);
  animation: bounceIn 0.4s var(--ease-bounce) both;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  width: 100%;
}

.modal-actions .btn {
  flex: 1;
}


/* ── 19. Historial de movimientos ─────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  overflow-x: auto;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--ease-fast), color var(--ease-fast), border-color var(--ease-fast);
}

.filter-btn .material-symbols-outlined { font-size: 0.95rem; }

.filter-btn--active,
.filter-btn:hover {
  background: var(--green-dim);
  border-color: var(--green);
  color: var(--green-text);
}

.historial-container {
  flex: 1;
  padding: var(--space-3) var(--space-5) var(--space-8);
  overflow-y: auto;
}

/* Estado vacío */
.hist-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-5);
  text-align: center;
  animation: fadeIn 0.4s ease both;
}

.hist-empty-icon {
  font-size: 3rem;
  color: var(--text-muted);
}

.hist-empty-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.hist-empty-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Estado de carga del historial */
.hist-loading[hidden],
.hist-empty[hidden] {
  display: none !important;
}

.hist-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-12);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Lista de movimientos */
.movimientos-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Ítem individual de movimiento */
.mov-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  /* Animación de entrada escalonada */
  animation: slideUp 0.35s var(--ease-bounce) both;
  transition: border-color var(--ease-fast);
}

.mov-item:active {
  border-color: var(--border-active);
}

/* Borde lateral de color según tipo de movimiento */
.mov-item--ingreso {
  border-left: 3px solid var(--green);
}

.mov-item--retiro {
  border-left: 3px solid var(--danger);
}

.mov-body {
  padding: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

/* Ícono del tipo */
.mov-type-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mov-item--ingreso .mov-type-icon {
  background: var(--green-dim);
  color: var(--green);
}

.mov-item--retiro .mov-type-icon {
  background: var(--danger-dim);
  color: var(--danger);
}

.mov-type-icon .material-symbols-outlined {
  font-size: 1.1rem;
}

.mov-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Línea superior: materia o tipo de retiro */
.mov-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Nota (solo ingresos) */
.mov-nota {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.nota-badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: var(--green-dim);
  color: var(--green-text);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  font-weight: 600;
  font-size: 0.75rem;
}

.nota-badge--gold {
  background: var(--gold-dim);
  color: var(--gold);
}

/* Fecha */
.mov-date {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Monto (alineado a la derecha) */
.mov-amount {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-align: right;
  flex-shrink: 0;
  align-self: center;
}

.mov-item--ingreso .mov-amount { color: var(--green-text); }
.mov-item--retiro  .mov-amount { color: var(--danger); }

/* Imagen adjunta (si existe) */
.mov-image-container {
  border-top: 1px solid var(--border);
  cursor: pointer;
  overflow: hidden;
}

.mov-image {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
  transition: transform var(--ease-slow);
}

.mov-image:hover {
  transform: scale(1.02);
}


/* ── 20. Modal de imagen ampliada ─────────────────────────────────────────── */
.img-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  animation: fadeIn var(--ease-fast) both;
}

.img-modal-overlay[hidden] {
  display: none;
}

.img-modal-close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 301;
}

.img-modal-img {
  max-width: 100%;
  max-height: 80dvh;
  border-radius: var(--radius-lg);
  object-fit: contain;
  animation: zoomIn 0.3s var(--ease-bounce) both;
}

@keyframes zoomIn {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}


/* ── 21. Keyframes generales ──────────────────────────────────────────────── */
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes slideDown {
  from { transform: translateY(-16px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes bounceIn {
  0%   { transform: scale(0.5);  opacity: 0; }
  60%  { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); }
}

/* Animación de actualización del número de saldo */
@keyframes counterBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.balance-amount.updating {
  animation: counterBlink 0.5s ease 2;
}


/* ── 22. Respeto de preferencias del usuario (accesibilidad) ─────────────── */
@media (prefers-reduced-motion: reduce) {
  /* Si el usuario prefiere menos movimiento, reducimos todas las animaciones */
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* ── 23. Responsive: pantallas más anchas ─────────────────────────────────── */
@media (min-width: 500px) {
  /* En tablets o pantallas grandes, centramos más la UI */
  .app-shell {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }

  .balance-amount {
    font-size: 4rem;
  }
}