/* ═══════════════════════════════════════════════════════════
   calc.css — Estilos calculadora EAN Elemental
   Sin backdrop-filter ni fondo oscuro (no bloquea el fondo).
   FAB draggable con Pointer Events.
═══════════════════════════════════════════════════════════ */

/* ── Variables (sobreescritas por JS al abrir) ───────────── */
:root {
  --calc-neon:   #22d3ee;
  --calc-neon-glow: rgba(34,211,238,0.35);
  --calc-bg:     #0b1120;
  --calc-panel:  #111827;
  --calc-panel2: #1a2332;
  --calc-border: rgba(255,255,255,0.07);
  --calc-z:      9500;
}

/* ══════════════════════════════════════════════════════════
   FAB
══════════════════════════════════════════════════════════ */
#calc-fab {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: var(--calc-z);
  width: 52px;
  height: 52px;

  clip-path: polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  background: var(--calc-panel2);
  border: none;
  cursor: pointer;
  padding: 0;

  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--calc-neon);

  filter: drop-shadow(0 0 8px var(--calc-neon-glow));
  transition: filter 0.2s ease, transform 0.15s ease, color 0.25s ease;

  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none; /* necesario para Pointer Events en iOS */
}

/* Borde neón via pseudo (clip-path no admite border real) */
#calc-fab::before {
  content: '';
  position: absolute;
  inset: -2px;
  clip-path: polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  background: var(--calc-neon);
  z-index: -1;
  opacity: 0.2;
  transition: opacity 0.2s ease, background 0.25s ease;
}

#calc-fab.calc-fab--dragging {
  cursor: grabbing;
  filter: drop-shadow(0 0 22px var(--calc-neon-glow));
  transform: scale(1.1);
  transition: none; /* sin lag al arrastrar */
}

@media (hover: hover) and (pointer: fine) {
  #calc-fab:hover { filter: drop-shadow(0 0 18px var(--calc-neon-glow)); transform: scale(1.08); }
  #calc-fab:hover::before { opacity: 0.48; }
}

#calc-fab .calc-fab-icon {
  pointer-events: none;
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Pulso al recibir valor desde ficha */
@keyframes calc-fab-pulse {
  0%   { filter: drop-shadow(0 0 8px var(--calc-neon-glow)); }
  50%  { filter: drop-shadow(0 0 24px var(--calc-neon-glow)); transform: scale(1.14); }
  100% { filter: drop-shadow(0 0 8px var(--calc-neon-glow)); }
}
#calc-fab.calc-fab-pulse { animation: calc-fab-pulse 0.38s ease; }

/* ══════════════════════════════════════════════════════════
   OVERLAY — solo un contenedor, sin fondo
══════════════════════════════════════════════════════════ */
#calc-overlay {
  /* No tiene background ni backdrop-filter:
     el fondo (tabla + fichas) sigue siendo interactuable */
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: calc(var(--calc-z) - 1);
}

/* ══════════════════════════════════════════════════════════
   PANEL
══════════════════════════════════════════════════════════ */
#calc-panel {
  position: fixed;
  top: 76px;
  right: 16px;
  z-index: var(--calc-z);
  width: min(308px, calc(100vw - 24px));

  background: var(--calc-bg);
  border-radius: 18px;
  border: 1.5px solid var(--calc-neon);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.85),
    0 16px 48px rgba(0,0,0,0.75),
    0 0 26px var(--calc-neon-glow);
  overflow: hidden;

  /* Estado cerrado */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(0.88) translateY(-14px);
  transition:
    transform  0.27s cubic-bezier(0.34,1.4,0.64,1),
    opacity    0.22s ease,
    visibility 0s   linear 0.27s,
    border-color 0.28s ease,
    box-shadow   0.28s ease;
  will-change: transform, opacity;
}

/* Estado abierto — la clase la añade index.js */
#calc-overlay.calc-abierto #calc-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  transform: scale(1) translateY(0);
  transition:
    transform  0.27s cubic-bezier(0.34,1.4,0.64,1),
    opacity    0.22s ease,
    visibility 0s,
    border-color 0.28s ease,
    box-shadow   0.28s ease;
}

/* ── Cabecera ─────────────────────────────────────────────── */
#calc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--calc-border);
  background: var(--calc-panel);
}

#calc-titulo {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.56rem;
  font-weight: 700;
  color: var(--calc-neon);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

#calc-cerrar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.14);
  background: var(--calc-panel2);
  color: #9ca3af;
  font-size: 0.72rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s ease, color 0.18s ease;
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}
@media (hover: hover) and (pointer: fine) {
  #calc-cerrar:hover { background: #c0392b; border-color: #c0392b; color: #fff; }
}

/* ── Display ──────────────────────────────────────────────── */
#calc-display-wrap {
  padding: 8px 12px 5px;
  background: var(--calc-panel);
  border-bottom: 1px solid var(--calc-border);
  user-select: none;
  -webkit-user-select: none;
}

#calc-expresion {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.56rem;
  color: #6b7280;
  min-height: 1em;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  direction: rtl;
}

#calc-resultado {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.52rem;
  font-weight: 900;
  color: #f0f4ff;
  text-align: right;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.16s ease;
  user-select: none;
  -webkit-user-select: none;
}
#calc-resultado.calc-res-ok  { color: var(--calc-neon); }
#calc-resultado.calc-res-err { color: #ef4444; }

#calc-insertar-badge {
  display: none;
  font-size: 0.48rem;
  color: var(--calc-neon);
  font-family: 'Orbitron', sans-serif;
  text-align: right;
  margin-top: 1px;
}
#calc-insertar-badge.visible {
  display: block;
  animation: calc-badge-in 0.3s ease forwards;
}
@keyframes calc-badge-in {
  from { opacity:0; transform:translateX(5px); }
  to   { opacity:0.85; transform:translateX(0); }
}

/* ── Historial ────────────────────────────────────────────── */
#calc-hist-toggle {
  width: 100%;
  background: none;
  border: none;
  border-top: 1px solid var(--calc-border);
  color: #6b7280;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.45rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 12px;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.14s ease, background 0.14s ease;
  -webkit-tap-highlight-color: transparent;
}
#calc-hist-toggle:hover { color: var(--calc-neon); background: rgba(255,255,255,0.02); }

#calc-hist-toggle-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  font-size: 0.5rem;
}
#calc-hist-toggle.abierto #calc-hist-toggle-arrow { transform: rotate(90deg); }

#calc-historial {
  background: var(--calc-panel);
  border-bottom: 1px solid var(--calc-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
#calc-historial.calc-hist-visible { max-height: 102px; }

#calc-hist-lista {
  padding: 4px 10px 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.calc-hist-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 5px;
  font-size: 0.56rem;
  color: #6b7280;
  cursor: pointer;
  padding: 3px 4px;
  border-radius: 5px;
  transition: background 0.1s ease, color 0.1s ease;
  -webkit-tap-highlight-color: transparent;
}
.calc-hist-item:hover, .calc-hist-item:active {
  background: rgba(255,255,255,0.05);
  color: #9ca3af;
}
.calc-hist-expr  { flex:1; font-family:'Inter',monospace; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.calc-hist-igual { color:var(--calc-neon); font-weight:700; flex-shrink:0; margin:0 2px; }
.calc-hist-res   { font-family:'Orbitron',sans-serif; font-size:0.54rem; font-weight:700; color:var(--calc-neon); flex-shrink:0; }

/* ══════════════════════════════════════════════════════════
   TECLADO HEXAGONAL
══════════════════════════════════════════════════════════ */
#calc-teclado {
  padding: 11px 8px 13px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px 4px;
}

.calc-hex {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1.1547;
  clip-path: polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  background: var(--calc-panel2);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: #f0f4ff;
  outline: none;
  /* Prevenir selección / comportamiento de escritura */
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background 0.1s ease, color 0.1s ease, transform 0.07s ease;
  will-change: transform;
}

/* Hijos no interactivos */
.calc-hex > * {
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
}

/* Borde neón via pseudo */
.calc-hex::before {
  content: '';
  position: absolute;
  inset: -1.5px;
  clip-path: polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  background: var(--calc-neon);
  z-index: -1;
  opacity: 0.08;
  transition: opacity 0.1s ease, background 0.25s ease;
}

@media (hover: hover) and (pointer: fine) {
  .calc-hex:hover { background: var(--calc-panel); color: var(--calc-neon); }
  .calc-hex:hover::before { opacity: 0.32; }
}
.calc-hex:active { transform: scale(0.87); }

/* Variantes */
.calc-hex--neon {
  background: color-mix(in srgb, var(--calc-neon) 14%, var(--calc-panel2));
  color: var(--calc-neon);
}
.calc-hex--neon::before { opacity: 0.26; }

.calc-hex--op { color: var(--calc-neon); font-size: 0.92rem; }

.calc-hex--ac {
  background: color-mix(in srgb, #ef4444 15%, var(--calc-panel2));
  color: #ef4444;
}
.calc-hex--ac::before { background: #ef4444; opacity: 0.18; }

.calc-hex--eq {
  background: var(--calc-neon);
  color: #000;
  font-size: 1.02rem;
  font-weight: 900;
}
.calc-hex--eq::before { opacity: 0; }
@media (hover: hover) and (pointer: fine) {
  .calc-hex--eq:hover { filter: brightness(1.15); }
}

.calc-hex__sub {
  font-size: 0.37rem;
  opacity: 0.58;
  line-height: 1;
}

/* ══════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════ */
@media (max-width: 380px) {
  #calc-panel { width: calc(100vw - 16px); right: 8px; border-radius: 14px; }
  #calc-resultado { font-size: 1.2rem; }
  #calc-teclado { gap: 4px 3px; padding: 8px 6px 10px; }
  .calc-hex { font-size: 0.7rem; }
}
@media (max-width: 320px) {
  .calc-hex { font-size: 0.6rem; }
  #calc-resultado { font-size: 1rem; }
}

/* ── Móvil: panel más compacto y arrastrable por el header ── */
@media (max-width: 600px) and (pointer: coarse) {
  #calc-panel {
    width: min(270px, calc(100vw - 20px));
    font-size: 0.92em;
  }
  #calc-resultado { font-size: 1.25rem; }
  #calc-teclado { gap: 4px 3px; padding: 8px 5px 10px; }
  .calc-hex { font-size: 0.68rem; }
  #calc-display-wrap { padding: 6px 10px 4px; }
  #calc-historial.calc-hist-visible { max-height: 88px; }

  /* Header arrastrable en móvil */
  #calc-header {
    cursor: grab;
    touch-action: none;
  }
  #calc-header:active { cursor: grabbing; }
}

/* ══════════════════════════════════════════════════════════
   INTEGRACIONES CON FICHA
══════════════════════════════════════════════════════════ */

/* Estrellas de oxidación — cursor pointer, hover */
.estrella--activa {
  cursor: pointer;
  transition: transform 0.12s ease, filter 0.12s ease;
}
@media (hover: hover) and (pointer: fine) {
  .estrella--activa:hover { transform: scale(1.22); filter: brightness(1.4); }
}
.estrella--activa:active { transform: scale(1.08); }

/* Masa atómica — copiable */
.carta__masa-flotante {
  cursor: pointer;
  transition: color 0.14s ease, transform 0.12s ease;
}
@media (hover: hover) and (pointer: fine) {
  .carta__masa-flotante:hover { color: var(--calc-neon) !important; transform: scale(1.08); }
}
.carta__masa-flotante:active { transform: scale(0.96); }

/* Tooltip "¡Copiado!" */
.calc-copiado-tip {
  position: fixed;
  background: var(--calc-panel2);
  border: 1px solid var(--calc-neon);
  color: var(--calc-neon);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.46rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 20px;
  pointer-events: none;
  z-index: 99999;
  white-space: nowrap;
  box-shadow: 0 0 10px var(--calc-neon-glow);
  animation: calc-tip-in 0.2s ease forwards;
}
@keyframes calc-tip-in {
  from { opacity:0; transform:translateY(6px); }
  to   { opacity:1; transform:translateY(0); }
}
.calc-copiado-tip.saliendo { animation: calc-tip-out 0.2s ease forwards; }
@keyframes calc-tip-out {
  from { opacity:1; }
  to   { opacity:0; transform:translateY(-4px); }
}