/* =============================================================================
   Finanzas del Hogar — Dark Neon
   -----------------------------------------------------------------------------
   Tema oscuro neon coherente con el perfil GitHub. Tokens semánticos en :root,
   sin frameworks. System font stack + tabular-nums para no romper el CSP de
   netlify.toml (que no permite font-src externos).

   Selectores clave que el JS toca: NO se renombran. Solo cambia la capa visual.
   ============================================================================= */


/* === Design tokens ====================================================== */
:root {
  /* Superficies (escala GitHub neon) */
  --bg:        #0D1117;
  --surface:   #161B22;
  --surface-2: #1F2937;
  --surface-3: #273449;
  --border:    #30363D;
  --border-strong: #4B5563;

  /* Texto */
  --text:   #E6EDF3;
  --muted:  #9CA3AF;

  /* Acentos neon */
  --cyan:    #00F0FF;
  --violet:  #7C3AED;
  --magenta: #FF006E;
  --yellow:  #F7DF1E;
  --green:   #10B981;

  /* Roles semánticos (mapean a neon) */
  --accent:    var(--cyan);
  --income:    var(--green);
  --expense:   var(--magenta);
  --balance:   var(--cyan);
  --danger:    var(--magenta);
  --warning:   var(--yellow);

  /* Gradiente firma */
  --grad-neon: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 50%, var(--magenta) 100%);

  /* Sombras / glow */
  --glow-cyan:    0 0 14px rgba(0, 240, 255, 0.45);
  --glow-magenta: 0 0 14px rgba(255, 0, 110, 0.45);
  --glow-green:   0 0 14px rgba(16, 185, 129, 0.45);
  --shadow-card:  0 1px 0 rgba(255,255,255,0.03), 0 8px 24px rgba(0,0,0,0.4);
  --shadow-pop:   0 1px 0 rgba(255,255,255,0.05), 0 12px 40px rgba(0,0,0,0.55);

  /* Radios y transiciones */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --t-fast:   140ms ease-out;
  --t-med:    220ms ease-out;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 16px;
  /* Sutil fondo radial para dar profundidad sin distraer */
  background-image:
    radial-gradient(900px 500px at 10% -10%, rgba(124,58,237,0.08), transparent 60%),
    radial-gradient(700px 420px at 110% 0%, rgba(0,240,255,0.06), transparent 60%);
  background-attachment: fixed;
  min-height: 100dvh;
}

/* Números siempre con anchura de columna estable (KPIs, lista, montos) */
.value, .tx-amount, #currentMonthLabel, .summary, .tx-list { font-variant-numeric: tabular-nums; }

/* === Header con barra de gradiente neon ================================= */

header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 2rem;
  background: linear-gradient(180deg, rgba(22,27,34,0.92), rgba(22,27,34,0.6));
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

/* Barra neon animada en la parte superior del header */
header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-neon);
  background-size: 200% 100%;
  animation: neon-shift 6s linear infinite;
  opacity: 0.85;
}

@keyframes neon-shift {
  0%   { background-position:   0% 50%; }
  100% { background-position: 200% 50%; }
}

header h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: var(--grad-neon);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

.month-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.month-nav button {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.5rem 0.85rem;
  cursor: pointer;
  font-size: 1rem;
  min-width: 44px;
  min-height: 44px;
  transition: border-color var(--t-fast), color var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast);
}

.month-nav button:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.month-nav button:active { transform: translateY(1px); }

#currentMonthLabel {
  min-width: 12ch;
  text-align: center;
  text-transform: capitalize;
  color: var(--muted);
  font-weight: 600;
}


/* === Layout principal =================================================== */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.75rem 2rem 4rem;
  display: grid;
  gap: 1.5rem;
}

h2 {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}


/* === Summary cards (Ingresos / Gastos / Balance) ======================== */

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  position: relative;
  background:
    linear-gradient(180deg, rgba(31,41,55,0.6), rgba(22,27,34,0.92));
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.25rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  opacity: 0.85;
}

.card.income::before   { background: linear-gradient(90deg, var(--green), transparent); }
.card.expense::before  { background: linear-gradient(90deg, var(--magenta), transparent); }
.card.balance::before  { background: linear-gradient(90deg, var(--cyan), transparent); }

.card:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-pop);
}

.card .label {
  color: var(--muted);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
}

.card .value {
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.card.income   .value { color: var(--green);   text-shadow: var(--glow-green); }
.card.expense  .value { color: var(--magenta); text-shadow: var(--glow-magenta); }
.card.balance  .value { color: var(--cyan);    text-shadow: var(--glow-cyan); }


/* === Gráficos ========================================================== */

.charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.chart-box {
  position: relative;
  background:
    linear-gradient(180deg, rgba(31,41,55,0.45), rgba(22,27,34,0.92));
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.25rem 1.4rem 1rem;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}

.chart-box canvas {
  flex: 1;
  max-height: 300px;
}


/* === Form section ====================================================== */

.form-section, .tx-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-card);
}

/* Estado "editando": borde amarillo + halo */
.form-section.editing {
  border-color: var(--warning);
  box-shadow: 0 0 0 1px var(--warning), 0 0 22px rgba(247,223,30,0.18);
}

form .row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
}

form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

form label.full { width: 100%; }

form input, form select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  padding: 0.7rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  min-height: 44px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background-color var(--t-fast);
}

form input::placeholder { color: var(--muted); opacity: 0.6; }

form input:hover, form select:hover { border-color: var(--border-strong); }

form input:focus, form select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.18);
}

.form-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

/* Botón submit: gradiente neon */
form button[type="submit"] {
  background: var(--grad-neon);
  background-size: 200% 100%;
  background-position: 0% 50%;
  color: #0B1220;
  border: none;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  font-size: 0.95rem;
  min-height: 44px;
  transition: background-position var(--t-med), box-shadow var(--t-fast), transform var(--t-fast);
  box-shadow: 0 0 0 1px rgba(0,240,255,0.35), 0 6px 18px rgba(124,58,237,0.35);
}

form button[type="submit"]:hover {
  background-position: 100% 50%;
  box-shadow: 0 0 0 1px rgba(255,0,110,0.45), 0 8px 26px rgba(124,58,237,0.55);
}

form button[type="submit"]:active { transform: translateY(1px); }

#cancelEditBtn {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.7rem 1.1rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 0.9rem;
  min-height: 44px;
  transition: border-color var(--t-fast), color var(--t-fast);
}

#cancelEditBtn:hover { border-color: var(--warning); color: var(--warning); }


/* === TX section ======================================================== */

.tx-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.tx-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tx-actions input[type="search"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  padding: 0.55rem 0.8rem;
  font-size: 0.9rem;
  min-width: 220px;
  min-height: 40px;
  font-family: inherit;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.tx-actions input[type="search"]:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.18);
}

.tx-actions button {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.55rem 0.95rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  min-height: 40px;
  transition: border-color var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
}

.tx-actions button:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
}


/* === Lista de movimientos =============================================== */

.tx-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tx-list li {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  transition: border-color var(--t-fast), background-color var(--t-fast), transform var(--t-fast);
}

.tx-list li:hover {
  border-color: var(--border-strong);
  background: var(--surface-3);
}

.tx-list li.editing {
  border-color: var(--warning);
  background: color-mix(in srgb, var(--warning) 10%, var(--surface-2));
  box-shadow: 0 0 0 1px var(--warning);
}

/* Pequeño indicador de color a la izquierda según tipo */
.tx-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12%;
  bottom: 12%;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--border);
  transition: background-color var(--t-fast);
}

.tx-list li:has(.tx-amount.income)::before  { background: var(--green); box-shadow: 0 0 8px rgba(16,185,129,0.5); }
.tx-list li:has(.tx-amount.expense)::before { background: var(--magenta); box-shadow: 0 0 8px rgba(255,0,110,0.5); }

.tx-list .tx-date {
  color: var(--muted);
  font-size: 0.82rem;
  min-width: 5ch;
}

.tx-list .tx-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.tx-list .tx-category {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

.tx-list .tx-description {
  color: var(--muted);
  font-size: 0.82rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tx-list .tx-amount {
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.tx-list .tx-amount.income  { color: var(--green); }
.tx-list .tx-amount.expense { color: var(--magenta); }

.tx-list .icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--r-sm);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  min-width: 36px;
  min-height: 36px;
  transition: border-color var(--t-fast), color var(--t-fast), background-color var(--t-fast);
}

.tx-list .icon-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.tx-list .delete-btn { color: var(--magenta); border-color: rgba(255,0,110,0.4); }

.tx-list .delete-btn:hover {
  background: var(--magenta);
  color: #0B1220;
  border-color: var(--magenta);
  box-shadow: var(--glow-magenta);
}


/* === Estados vacíos ===================================================== */

.empty-hint {
  color: var(--muted);
  font-style: italic;
  text-align: center;
  padding: 1rem 0;
  margin: 0;
  display: none;
}

.empty-hint.show { display: block; }


/* === Toast ============================================================== */

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--cyan);
  border-radius: var(--r-md);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-pop), 0 0 0 1px rgba(0,240,255,0.12), 0 0 24px rgba(0,240,255,0.18);
  z-index: 1000;
  max-width: 90%;
  animation: toast-in 220ms ease-out;
}

.toast[hidden] { display: none; }

@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

.toast #toastAction {
  background: var(--cyan);
  color: #0B1220;
  border: none;
  padding: 0.4rem 0.95rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.85rem;
  min-height: 36px;
  transition: filter var(--t-fast), box-shadow var(--t-fast);
}

.toast #toastAction:hover { filter: brightness(1.12); box-shadow: var(--glow-cyan); }


/* === Dialog import ===================================================== */

dialog {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0;
  max-width: 460px;
  width: 92%;
  box-shadow: var(--shadow-pop);
}

dialog::backdrop {
  background: rgba(8,12,20,0.65);
  backdrop-filter: blur(4px);
}

.dialog-form {
  padding: 1.5rem;
  margin: 0;
}

.dialog-form h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  background: var(--grad-neon);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

.dialog-form p {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.dialog-form .dialog-hint {
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.dialog-actions {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.dialog-actions button {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  min-height: 40px;
  transition: border-color var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
}

.dialog-actions button:hover { border-color: var(--cyan); color: var(--cyan); }

.dialog-actions button.primary {
  background: var(--grad-neon);
  color: #0B1220;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 0 0 1px rgba(0,240,255,0.35);
}

.dialog-actions button.primary:hover { box-shadow: 0 0 0 1px rgba(255,0,110,0.45), var(--glow-cyan); }

.dialog-actions button.danger {
  border-color: rgba(255,0,110,0.5);
  color: var(--magenta);
}

.dialog-actions button.danger:hover {
  background: var(--magenta);
  color: #0B1220;
  border-color: var(--magenta);
  box-shadow: var(--glow-magenta);
}


/* === Focus visible global ============================================== */

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}


/* === Responsive (mobile) =============================================== */

@media (max-width: 640px) {
  header { padding: 1rem; }
  header h1 { font-size: 1.2rem; }
  main { padding: 1rem 1rem 3rem; gap: 1rem; }

  .card { padding: 1rem 1.1rem; }
  .card .value { font-size: 1.6rem; }

  .form-section, .tx-section, .chart-box { padding: 1rem 1.1rem; }

  .tx-list li {
    grid-template-columns: 1fr auto auto;
    row-gap: 0.4rem;
    padding: 0.85rem;
  }
  .tx-list .tx-date { grid-column: 1 / -1; }
  .tx-list .tx-info { grid-column: 1 / 2; }
  .tx-actions input[type="search"] { min-width: 0; flex: 1 1 100%; }
}


/* === Reduced motion ==================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  header::before { animation: none; }
}