/* ============================================================
   Circufy — Simulador de Compuertas Lógicas
   Archivo: styles.css
   ============================================================ */

:root {
  --bg: #03080f;
  --panel: #070f1a;
  --panel2: #0a1628;
  --border: rgba(0,220,255,0.14);
  --neon: #00dcff;
  --red: #ff2d6b;
  --green: #00ffaa;
  --gold: #ffe600;
  --purple: #a855f7;
  --text: #c0e0ff;
  --dim: #1a3550;
  --dim2: #2a5070;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; min-height: 100%; background: var(--bg); color: var(--text); font-family: 'Rajdhani', sans-serif; overflow-x: hidden; }

#bgc { position: fixed; inset: 0; z-index: 0; opacity: 0.18; pointer-events: none; }

/* ── NAVBAR ── */
#navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 0;
  background: rgba(3,8,15,0.98);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  min-height: 52px;
  padding: 0 16px;
  flex-wrap: wrap;
}

.nav-logo {
  display: flex; flex-direction: column; justify-content: center;
  padding-right: 16px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
  margin-right: 12px;
}
.nav-logo-text {
  font-family: 'Orbitron', monospace; font-size: 0.9rem; font-weight: 900;
  background: linear-gradient(90deg, var(--neon), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-logo-sub { font-size: 0.5rem; color: var(--dim2); letter-spacing: 0.2em; margin-top: 1px; }

.nav-gates {
  display: flex; align-items: center; gap: 4px;
  flex: 1; flex-wrap: wrap; padding: 6px 0;
}

.nav-gate-btn {
  padding: 5px 12px;
  border: 1px solid var(--dim);
  background: transparent;
  color: var(--dim); font-family: 'Orbitron', monospace;
  font-size: 0.6rem; font-weight: 700;
  cursor: not-allowed; transition: all 0.25s;
  letter-spacing: 0.08em; position: relative;
  opacity: 0.4;
}
.nav-gate-btn.unlocked {
  color: var(--dim2); border-color: var(--dim2);
  cursor: pointer; opacity: 1;
}
.nav-gate-btn.unlocked:hover {
  border-color: var(--neon); color: var(--neon);
  box-shadow: 0 0 12px rgba(0,220,255,0.25);
}
.nav-gate-btn.active {
  background: var(--neon); color: #000; border-color: var(--neon);
  box-shadow: 0 0 16px rgba(0,220,255,0.5);
  cursor: pointer; opacity: 1;
}
.nav-gate-btn.active.nand, .nav-gate-btn.active.nor {
  background: var(--red); border-color: var(--red);
  box-shadow: 0 0 16px rgba(255,45,107,0.5);
}
.nav-gate-btn.active.xor, .nav-gate-btn.active.xnor {
  background: var(--gold); border-color: var(--gold); color: #000;
  box-shadow: 0 0 16px rgba(255,230,0,0.5);
}
.nav-gate-btn .lock-icon { font-size: 0.55rem; margin-left: 3px; }
.nav-gate-btn .done-icon { color: var(--green); font-size: 0.65rem; margin-left: 3px; }

.nav-controls {
  display: flex; align-items: center; gap: 8px;
  padding-left: 12px; border-left: 1px solid var(--border);
  flex-shrink: 0;
}
.toggle-mode { display: flex; border: 1px solid var(--dim); overflow: hidden; }
.tm-btn { padding: 4px 10px; background: transparent; border: none; font-family: 'Share Tech Mono', monospace; font-size: 0.68rem; color: var(--dim2); cursor: pointer; transition: all 0.2s; }
.tm-btn.active { background: var(--neon); color: #000; font-weight: bold; }
.rows-ctrl { display: flex; align-items: center; gap: 5px; }
.rc-btn { width: 24px; height: 24px; border: 1px solid var(--dim); background: transparent; color: var(--dim2); font-size: 1rem; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; }
.rc-btn:hover { border-color: var(--neon); color: var(--neon); }
.rc-count { font-family: 'Share Tech Mono', monospace; font-size: 0.82rem; color: var(--neon); min-width: 20px; text-align: center; }
.reset-btn { padding: 4px 10px; border: 1px solid var(--dim2); background: transparent; color: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 0.65rem; cursor: pointer; transition: all 0.2s; }
.reset-btn:hover { border-color: var(--red); color: var(--red); }

/* ── PAGE ── */
.page { position: relative; z-index: 1; padding: 20px; max-width: 1300px; margin: 0 auto; }

/* ── SECTION BLOCK ── */
.section-block { margin-bottom: 28px; }
.section-title {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Orbitron', monospace; font-size: 0.72rem;
  color: var(--neon); letter-spacing: 0.18em;
  margin-bottom: 14px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.step-badge {
  background: var(--neon); color: #000;
  font-size: 0.6rem; font-weight: 900; padding: 2px 7px;
  flex-shrink: 0;
}
.section-hint { font-family: 'Rajdhani', sans-serif; font-size: 0.65rem; color: var(--dim2); font-weight: 400; letter-spacing: 0.1em; margin-left: auto; }

/* ── TRUTH TABLE ── */
.tt-wrap { overflow-x: auto; }
table.tt { border-collapse: collapse; font-family: 'Share Tech Mono', monospace; min-width: 700px; width: 100%; }
table.tt th { padding: 9px 10px; text-align: center; font-size: 0.68rem; letter-spacing: 0.08em; border: 1px solid rgba(0,220,255,0.1); white-space: nowrap; }
table.tt th.inp-h { background: rgba(0,220,255,0.08); color: var(--neon); }
table.tt th.gate-h { background: rgba(7,15,26,0.98); }
.gcol-name { font-family: 'Orbitron', monospace; font-size: 0.62rem; font-weight: 700; }
.gcol-rule { font-size: 0.52rem; color: var(--dim2); display: block; margin-top: 1px; }
.cprog { height: 3px; background: var(--dim); margin-top: 4px; overflow: hidden; }
.cprog-f { height: 100%; width: 0%; transition: width 0.4s; }
table.tt td { padding: 0; text-align: center; border: 1px solid rgba(255,255,255,0.04); height: 40px; }
table.tt td.inp-c { background: rgba(0,220,255,0.04); border: 1px solid rgba(0,220,255,0.08); }
.inp-val { font-size: 0.95rem; font-weight: bold; color: var(--neon); }
.ans-inp { width: 52px; height: 36px; background: transparent; border: none; outline: none; font-family: 'Share Tech Mono', monospace; font-size: 1rem; font-weight: bold; text-align: center; color: var(--text); }
td.ok { background: rgba(0,255,170,0.07) !important; } td.ok .ans-inp { color: var(--green); }
td.err { background: rgba(255,45,107,0.07) !important; animation: shk .3s; } td.err .ans-inp { color: var(--red); }
td.rn { font-size: 0.62rem; color: var(--dim2); background: rgba(0,0,0,0.3) !important; width: 28px; border-right: 1px solid rgba(0,220,255,0.08) !important; }
@keyframes shk { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-3px)} 75%{transform:translateX(3px)} }

/* ── CIRCUIT LAYOUT ── */
.circuit-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
  align-items: start;
}
@media (max-width: 900px) {
  .circuit-layout { grid-template-columns: 1fr; }
}

/* Circuit main */
.circuit-main { display: flex; flex-direction: column; gap: 0; background: var(--panel); border: 1px solid var(--border); }

.circuit-toolbar {
  display: flex; gap: 5px; padding: 8px 12px; flex-wrap: wrap;
  background: rgba(0,0,0,0.3); border-bottom: 1px solid var(--border);
}
.tool-btn {
  padding: 5px 12px; border: 1px solid var(--dim); background: transparent;
  color: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 0.62rem;
  cursor: pointer; transition: all 0.2s; display: flex; align-items: center; gap: 5px;
  user-select: none;
}
.tool-btn:hover { border-color: var(--neon); color: var(--neon); }
.tool-btn.sel { border-color: var(--gold); color: var(--gold); background: rgba(255,230,0,0.06); }
.tool-btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.circuit-canvas-wrap { position: relative; width: 100%; overflow: hidden; }

/* ── FIX PRINCIPAL: ambos canvas ocupan el 100% del ancho ── */
#mainCircCanvas {
  display: block;
  width: 100%;
  height: 500px;    /* más alto que antes (era 420px) */
}

#finalCanvas {
  display: block;
  width: 100%;
  height: 600px;    /* tablero grande para el nivel final */
}

.circuit-hint-bar {
  padding: 5px 12px; font-size: 0.6rem; color: var(--dim2);
  background: rgba(0,0,0,0.2); border-top: 1px solid var(--border);
  letter-spacing: 0.1em;
}

.circuit-actions {
  display: flex; gap: 8px; padding: 10px 12px;
  border-top: 1px solid var(--border); background: rgba(0,0,0,0.2);
}
.c-btn {
  flex: 1; padding: 8px; border: 1px solid var(--dim); background: transparent;
  color: var(--dim2); font-family: 'Orbitron', monospace; font-size: 0.62rem;
  cursor: pointer; transition: all 0.2s; letter-spacing: 0.1em;
}
.c-btn:hover { border-color: var(--neon); color: var(--neon); }
.c-btn.verify-btn { border-color: var(--gold); color: var(--gold); flex: 2; }
.c-btn.verify-btn:hover { background: rgba(255,230,0,0.1); box-shadow: 0 0 16px rgba(255,230,0,0.3); }

/* Circuit side */
.circuit-side { display: flex; flex-direction: column; gap: 12px; }

.exp-card {
  background: var(--panel); border: 1px solid var(--border); padding: 14px;
}
.exp-gate-name {
  font-family: 'Orbitron', monospace; font-size: 1.1rem; font-weight: 900;
  margin-bottom: 8px;
}
.exp-rule {
  font-size: 0.75rem; color: var(--dim2); margin-bottom: 10px;
  padding: 6px 10px; border-left: 3px solid var(--neon);
  background: rgba(0,220,255,0.04);
}
.exp-text { font-size: 0.78rem; line-height: 1.7; color: var(--text); }
.exp-text strong { color: var(--gold); }
.exp-svg-wrap {
  margin: 12px 0; display: flex; justify-content: center;
  background: rgba(0,0,0,0.3); padding: 12px;
}
.exp-svg-wrap svg { width: 120px; height: 80px; }

/* Ref table */
.ref-table-card {
  background: var(--panel); border: 1px solid var(--border); padding: 12px;
}
.ref-title {
  font-family: 'Orbitron', monospace; font-size: 0.6rem;
  color: var(--neon); letter-spacing: 0.15em; margin-bottom: 8px;
}
table.ref-tt { width: 100%; border-collapse: collapse; font-family: 'Share Tech Mono', monospace; font-size: 0.78rem; }
table.ref-tt th { background: rgba(0,220,255,0.1); color: var(--neon); padding: 6px 10px; border: 1px solid rgba(0,220,255,0.15); text-align: center; }
table.ref-tt td { padding: 6px 10px; text-align: center; border: 1px solid rgba(255,255,255,0.04); }
table.ref-tt td.v1 { color: var(--green); font-weight: bold; }
table.ref-tt td.v0 { color: var(--red); }
table.ref-tt tr.hl td { background: rgba(0,220,255,0.07); }

/* Verify result */
.verify-result {
  background: var(--panel); border: 1px solid var(--border); padding: 14px;
}
.vr-step { margin-bottom: 12px; }
.vr-step-title {
  font-family: 'Orbitron', monospace; font-size: 0.6rem;
  letter-spacing: 0.12em; margin-bottom: 6px; color: var(--dim2);
}
.vr-item {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.75rem; line-height: 1.5; padding: 5px 8px; margin-bottom: 4px;
  border-left: 3px solid var(--dim);
}
.vr-item.pass { border-color: var(--green); background: rgba(0,255,170,0.05); color: var(--green); }
.vr-item.fail { border-color: var(--red); background: rgba(255,45,107,0.05); color: var(--text); }
.vr-item.fail span.lbl { color: var(--red); font-weight: bold; }
.vr-icon { font-size: 0.9rem; flex-shrink: 0; margin-top: 1px; }
.vr-final {
  text-align: center; padding: 10px; margin-top: 8px;
  font-family: 'Orbitron', monospace; font-size: 0.85rem; font-weight: 700;
}
.vr-final.ok { background: rgba(0,255,170,0.1); color: var(--green); border: 1px solid rgba(0,255,170,0.3); }
.vr-final.bad { background: rgba(255,45,107,0.1); color: var(--red); border: 1px solid rgba(255,45,107,0.3); }

/* Empty state */
.empty-circuit {
  text-align: center; padding: 60px 20px;
  border: 1px dashed var(--dim); margin-top: 8px;
}
.ec-icon { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.4; }
.ec-title { font-family: 'Orbitron', monospace; font-size: 0.75rem; color: var(--dim2); margin-bottom: 8px; letter-spacing: 0.1em; }
.ec-sub { font-size: 0.72rem; color: var(--dim); max-width: 400px; margin: 0 auto; line-height: 1.6; }

/* Toast */
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); padding: 10px 22px; z-index: 200; font-family: 'Orbitron', monospace; font-size: 0.68rem; background: rgba(3,8,15,0.98); opacity: 0; transition: opacity .3s; pointer-events: none; max-width: 90vw; text-align: center; }
#toast.show { opacity: 1; }
#toast.ok { border: 1px solid var(--green); color: var(--green); box-shadow: 0 0 20px rgba(0,255,170,0.2); }
#toast.bad { border: 1px solid var(--red); color: var(--red); box-shadow: 0 0 20px rgba(255,45,107,0.2); }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-thumb { background: var(--dim); }

/* ── NIVEL FINAL ── */
.guide-steps {
  display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap;
}
.guide-step {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; background: var(--panel);
  border: 1px solid var(--dim); font-size: 0.72rem; color: var(--dim2);
  flex: 1; min-width: 180px; transition: all 0.3s;
}
.guide-step.active { border-color: var(--gold); color: var(--text); }
.guide-step.done { border-color: var(--green); background: rgba(0,255,170,0.05); color: var(--green); }
.gs-num {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--dim); color: var(--dim2);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Orbitron', monospace; font-size: 0.6rem; font-weight: 700;
  flex-shrink: 0;
}
.guide-step.active .gs-num { background: var(--gold); color: #000; }
.guide-step.done .gs-num { background: var(--green); color: #000; }
.gs-text { flex: 1; line-height: 1.4; }
.gs-check { font-size: 0.9rem; flex-shrink: 0; }

.final-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: 16px; align-items: start;
}
@media (max-width: 900px) { .final-layout { grid-template-columns: 1fr; } }

.final-info-card {
  background: var(--panel); border: 1px solid rgba(255,230,0,0.2); padding: 14px;
}

.final-result {
  background: var(--panel); border: 1px solid rgba(255,230,0,0.3); padding: 14px;
  margin-top: 12px;
}
.fr-title {
  font-family: 'Orbitron', monospace; font-size: 0.62rem;
  color: var(--gold); letter-spacing: 0.15em; margin-bottom: 10px;
}
.bool-level {
  padding: 8px 10px; margin-bottom: 6px;
  background: rgba(0,220,255,0.04); border-left: 3px solid var(--neon);
  font-family: 'Share Tech Mono', monospace; font-size: 0.75rem;
}
.bool-level .bl-name { color: var(--gold); font-weight: bold; margin-bottom: 3px; }
.bool-level .bl-fn { color: var(--neon); }
.bool-level .bl-out { color: var(--green); font-size: 0.68rem; margin-top: 2px; }

table.final-tt { width: 100%; border-collapse: collapse; font-family: 'Share Tech Mono', monospace; font-size: 0.7rem; margin-top: 10px; }
table.final-tt th { background: rgba(255,230,0,0.1); color: var(--gold); padding: 5px 8px; border: 1px solid rgba(255,230,0,0.2); text-align: center; font-size: 0.62rem; }
table.final-tt td { padding: 5px 8px; text-align: center; border: 1px solid rgba(255,255,255,0.04); color: var(--dim2); font-size: 0.72rem; }
table.final-tt td.v1 { color: var(--green); font-weight: bold; }
table.final-tt td.v0 { color: var(--red); }
table.final-tt tr.final-hl td { background: rgba(255,230,0,0.06); color: var(--text); }

.req-check {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.72rem; padding: 5px 8px; margin-bottom: 4px;
}
.req-check.ok { color: var(--green); }
.req-check.fail { color: var(--red); }