/* ============================================================
   Circufy V3 — Máquina de Turing Criptográfica
   Basado en el sistema de colores de Turing.css
   ============================================================ */

   @import url('https://googleapis.com');

: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: 'Roboto', sans-serif; 
  overflow-x: hidden; 
}

/* ── BACKGROUND CANVAS ── */
#bgc { 
  position: fixed; 
  inset: 0; 
  z-index: 0; 
  opacity: 0.15; 
  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;
}

.nav-logo { 
  display: flex; 
  flex-direction: column; 
  justify-content: center; 
  padding-right: 16px; 
  border-right: 1px solid var(--border); 
  flex-shrink: 0; 
  margin-right: 16px; 
}

.nav-logo-link { 
  text-decoration: none; 
  display: flex; 
  flex-direction: column; 
  gap: 1px; 
}

.nav-logo-text { 
  font-family: 'Roboto', sans-serif; 
  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; 
}

.nav-tabs { 
  display: flex; 
  gap: 4px; 
  flex: 1; 
}

.nav-tab { 
  padding: 6px 14px; 
  border: 1px solid var(--dim); 
  background: transparent; 
  color: var(--dim2); 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.6rem; 
  font-weight: 700; 
  letter-spacing: 0.08em; 
  cursor: pointer; 
  text-decoration: none; 
  transition: all 0.2s; 
}

.nav-tab:hover { 
  border-color: var(--neon); 
  color: var(--neon); 
}

.nav-tab.active { 
  border-color: var(--purple); 
  color: var(--purple); 
  background: rgba(168,85,247,0.08); 
  cursor: default; 
}

.nav-tab.principal { 
  border-color: var(--red); 
  color: var(--red); 
  background: rgba(130, 4, 4, 0.068); 
  cursor: default; 
}

.nav-status { 
  display: flex; 
  align-items: center; 
  gap: 7px; 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.65rem; 
  color: var(--dim2); 
  margin-left: auto; 
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; border: 1px solid currentColor; }
.status-dot.idle { color: var(--dim2); }
.status-dot.running { color: var(--gold); background: var(--gold); animation: blink 0.6s infinite; }
.status-dot.accepted { color: var(--green); background: var(--green); }
.status-dot.rejected { color: var(--red); background: var(--red); }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }


/* ── PAGE ── */
.page { 
  position: relative; 
  z-index: 1; 
  padding: 20px; 
  max-width: 1400px; 
  margin: 0 auto; 
}

/* ── HEADER ── */
.tm-header {
  display: flex; 
  align-items: flex-start; 
  justify-content: space-between;
  margin-bottom: 20px; 
  gap: 16px; 
  flex-wrap: wrap;
}

.tm-title {
  display: flex; 
  align-items: center; 
  gap: 10px;
  font-family: 'Roboto', sans-serif; 
  font-size: 0.9rem; 
  font-weight: 900;
  color: var(--purple); 
  letter-spacing: 0.15em;
}

.step-badge { 
  background: var(--purple); 
  color: #fff; 
  font-size: 0.6rem; 
  font-weight: 900; 
  padding: 3px 8px; 
}

.tm-subtitle { 
  font-size: 0.72rem; 
  color: var(--dim2); 
  margin-top: 4px; 
  letter-spacing: 0.1em; 
}

/* ── LAYOUT ── */
.tm-layout { 
  display: grid; 
  grid-template-columns: 1fr 320px; 
  gap: 16px; 
  align-items: start; 
}

@media (max-width: 900px) { 
  .tm-layout { 
    grid-template-columns: 1fr; 
  } 
}

.tm-col-main { 
  display: flex; 
  flex-direction: column; 
  gap: 14px; 
}

.tm-col-side { 
  display: flex; 
  flex-direction: column; 
  gap: 14px; 
}

/* ── PANEL ── */
.panel { 
  background: var(--panel); 
  border: 1px solid var(--border); 
}

.panel-header {
  display: flex; 
  align-items: center; 
  gap: 10px;
  padding: 8px 14px; 
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.25); 
  flex-wrap: wrap;
}

.panel-title { 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.6rem; 
  color: var(--purple); 
  letter-spacing: 0.15em; 
  flex: 1; 
}

/* ── INPUT SECTION ── */
.input-section { 
  padding: 14px; 
  display: flex; 
  flex-direction: column; 
  gap: 10px; 
}

.input-wrap { 
  display: flex; 
  flex-direction: column; 
  gap: 4px; 
}

.tm-input {
  width: 100%; 
  padding: 10px 12px; 
  background: var(--panel2); 
  border: 1px solid var(--dim);
  color: var(--gold); 
  font-family: 'Roboto', sans-serif; 
  font-size: 1rem; 
  font-weight: 700;
  outline: none; 
  letter-spacing: 0.2em; 
  transition: border-color 0.2s;
}

.tm-input:focus { 
  border-color: var(--gold); 
  box-shadow: 0 0 12px rgba(255,230,0,0.15); 
}

.input-hint { 
  font-size: 0.85rem; 
  color: var(--dim2); 
}

/* ── MODE TOGGLE ── */
.mode-toggle-wrap {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  padding: 8px;
}

.mode-toggle-btn {
  flex: 1;
  padding: 12px 24px;
  border: 1px solid var(--dim);
  background: transparent;
  color: var(--dim2);
  font-family: 'Roboto', sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.1em;
}

.mode-toggle-btn:hover {
  border-color: var(--neon);
  color: var(--neon);
}

.mode-toggle-btn.active {
  background: linear-gradient(135deg, rgba(0, 220, 255, 0.15), rgba(168, 85, 247, 0.15));
  border-color: var(--purple);
  color: var(--purple);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.3);
}

/* ── FORM ELEMENTS ── */
.form-row { 
  display: flex; 
  align-items: center; 
  gap: 10px; 
}

.form-row label { 
  font-size: 1.0rem; 
  color: var(--dim2); 
  min-width: 100px; 
  font-family: 'Roboto', sans-serif; 
}

.tm-select {
  flex: 1; 
  padding: 5px 8px; 
  background: var(--panel2); 
  border: 1px solid var(--dim);
  color: var(--neon); 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.80rem;
  cursor: pointer; 
  outline: none;
}

.tm-select:focus { 
  border-color: var(--purple); 
}

/* ── RULES LIST ── */
.trans-list { 
  max-height: 300px; 
  overflow-y: auto; 
}

.trans-empty { 
  padding: 14px; 
  text-align: center; 
  font-size: 0.65rem; 
  color: var(--dim2); 
}

.rule-item {
  display: flex; 
  align-items: center; 
  gap: 8px; 
  padding: 8px 14px;
  border-bottom: 1px solid rgba(0,0,0,0.3); 
  font-family: 'Roboto', sans-serif;
  font-size: 0.65rem; 
  transition: background 0.15s;
}

.rule-item:hover { 
  background: rgba(0,220,255,0.04); 
}

.rule-char {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(0, 220, 255, 0.2));
  border: 2px solid var(--purple);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--purple);
  font-family: 'Roboto', sans-serif;
}

.rule-controls {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rule-input {
  width: 60px;
  padding: 4px 8px;
  background: var(--panel2);
  border: 1px solid var(--dim);
  color: var(--neon);
  font-family: 'Roboto', sans-serif;
  font-size: 0.7rem;
  text-align: center;
  outline: none;
}

.rule-input:focus {
  border-color: var(--gold);
}

.rule-label {
  color: var(--dim2);
  font-size: 0.6rem;
}

.btn-icon {
  padding: 4px 8px;
  border: 1px solid var(--dim);
  background: transparent;
  color: var(--dim2);
  cursor: pointer;
  font-size: 0.6rem;
  transition: all 0.2s;
}

.btn-icon:hover {
  border-color: var(--red);
  color: var(--red);
}

/* ── ALPHABET BOARD ── */
.alphabet-board {
  display: flex;
  gap: 6px;
  padding: 16px;
  flex-wrap: wrap;
  justify-content: center;
  background: rgba(0, 0, 0, 0.2);
}

.alphabet-letter {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel2);
  border: 2px solid var(--dim);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dim2);
  font-family: 'Roboto', sans-serif;
  transition: all 0.3s ease;
}

.alphabet-letter.from {
  background: rgba(255, 230, 0, 0.2);
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 0 0 15px rgba(255, 230, 0, 0.4);
  transform: scale(1.1);
}

.alphabet-letter.current {
  background: rgba(0, 255, 170, 0.2);
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 15px rgba(0, 255, 170, 0.4);
  transform: scale(1.15);
  animation: pulse 0.5s ease-in-out infinite;
}

.alphabet-letter.to {
  background: rgba(0, 220, 255, 0.2);
  border-color: var(--neon);
  color: var(--neon);
  box-shadow: 0 0 15px rgba(0, 220, 255, 0.4);
  transform: scale(1.1);
}

@keyframes pulse {
  0%, 100% { transform: scale(1.15); }
  50% { transform: scale(1.25); }
}

/* ── VERTICAL TAPES ── */
.tape-wrap { 
  padding: 16px 14px 8px; 
  overflow-x: auto; 
}

.tapes-container {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: flex-start;
  min-height: 200px;
  padding: 16px;
}

.tape-hint {
  color: var(--dim2);
  font-size: 0.7rem;
  text-align: center;
  margin: auto;
}

.vertical-tape {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 70px;
  padding: 12px 8px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--dim);
  position: relative;
  overflow: hidden;
}

.vertical-tape::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(0, 220, 255, 0.5), transparent);
  animation: scan 3s linear infinite;
}

@keyframes scan {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.tape-label {
  font-size: 0.55rem;
  color: var(--dim2);
  font-family: 'Roboto', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.tape-slot {
  width: 50px;
  height: 50px;
  background: var(--panel2);
  border: 2px solid var(--dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dim2);
  font-family: 'Roboto', sans-serif;
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.tape-slot.active {
  background: rgba(0, 255, 170, 0.2);
  border-color: var(--green);
  color: var(--green);
  box-shadow: 
    0 0 25px rgba(0, 255, 170, 0.6),
    0 0 50px rgba(0, 255, 170, 0.3),
    inset 0 0 15px rgba(0, 255, 170, 0.2);
  transform: scale(1.15);
  z-index: 10;
}

.tape-slot.final {
  background: rgba(0, 220, 255, 0.2);
  border-color: var(--neon);
  color: var(--neon);
  box-shadow: 0 0 25px rgba(0, 220, 255, 0.5);
  transform: scale(1.1);
}

.tape-rule {
  font-size: 0.6rem;
  color: var(--green);
  font-weight: 700;
  background: rgba(0, 255, 170, 0.1);
  padding: 4px 10px;
  border: 1px solid rgba(0, 255, 170, 0.3);
  font-family: 'Roboto', sans-serif;
  text-align: center;
  border-radius: 2px;
}

/* ── CONTROLS ── */
.speed-ctrl { 
  display: flex; 
  align-items: center; 
  gap: 8px; 
  font-size: 0.62rem; 
  color: var(--dim2); 
}

.speed-ctrl label { 
  font-family: 'Roboto', sans-serif; 
  white-space: nowrap; 
}

.speed-slider { 
  flex: 1; 
  accent-color: var(--purple); 
  cursor: pointer; 
}

.exec-btns { 
  display: flex; 
  gap: 8px; 
}

.exec-btn {
  flex: 1; 
  padding: 10px; 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.62rem;
  cursor: pointer; 
  transition: all 0.2s; 
  border: 1px solid; 
  letter-spacing: 0.1em;
}

.exec-btn.primary { 
  border-color: var(--purple); 
  background: rgba(168,85,247,0.12); 
  color: var(--purple); 
}

.exec-btn.primary:hover { 
  background: rgba(168,85,247,0.25); 
  box-shadow: 0 0 18px rgba(168,85,247,0.4); 
}

.exec-btn.secondary { 
  border-color: var(--dim); 
  background: transparent; 
  color: var(--dim2); 
}

.exec-btn.secondary:hover { 
  border-color: var(--gold); 
  color: var(--gold); 
}

/* ── CONSOLE ── */
.console-wrap { 
  height: 160px; 
  overflow-y: auto; 
  padding: 8px 14px; 
  font-family: 'Roboto', sans-serif; 
  font-size: 0.68rem; 
  line-height: 1.8; 
}

.console-line { 
  display: flex; 
  gap: 10px; 
  align-items: baseline; 
}

.console-line.welcome { color: var(--dim2); }
.console-line.info { color: var(--text); }
.console-line.ok { color: var(--green); }
.console-line.error { color: var(--red); }
.console-line.transition { color: var(--neon); }

.cl-step { 
  color: var(--dim2); 
  min-width: 36px; 
  font-size: 0.6rem; 
  flex-shrink: 0; 
}

.cl-msg { 
  flex: 1; 
}

/* ── RESULT DISPLAY ── */
.result-display {
  padding: 16px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
}

.result-text {
  font-family: 'Roboto', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.2em;
  text-align: center;
}

.result-text.empty {
  color: var(--dim2);
  font-size: 0.7rem;
}

/* ── DIAGRAM LEGEND ── */
.diagram-legend { 
  display: flex; 
  align-items: center; 
  gap: 12px; 
  padding: 8px 14px; 
  border-top: 1px solid var(--border); 
  font-size: 0.65rem; 
  flex-wrap: wrap; 
  background: rgba(0, 0, 0, 0.2);
}

.legend-item { 
  display: flex; 
  align-items: center; 
  gap: 5px; 
  color: var(--dim2); 
}

.leg-dot { 
  width: 10px; 
  height: 10px; 
  border-radius: 50%; 
  border: 2px solid currentColor; 
}

/* ── UTILITY CLASSES ── */
.hidden { 
  display: none !important; 
}

.trans-count {
  background: var(--purple); 
  color: #fff; 
  font-family: 'Roboto', sans-serif;
  font-size: 0.9rem; 
  padding: 9px 17px; 
  border-radius: 2px;
}

.small-btn { 
  padding: 3px 10px; 
  border: 1px solid var(--dim); 
  background: transparent; 
  color: var(--dim2); 
  font-family: 'Roboto', sans-serif;
  font-size: 0.58rem; 
  cursor: pointer; 
  transition: all 0.2s; 
}

.small-btn:hover { 
  border-color: var(--red); 
  color: var(--red); 
}

/* ── TOAST ── */
#toast { 
  position: fixed; 
  bottom: 20px; 
  left: 50%; 
  transform: translateX(-50%); 
  padding: 10px 22px; 
  z-index: 200; 
  font-family: 'Roboto', sans-serif; 
  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); 
}

#toast.info { 
  border: 1px solid var(--purple); 
  color: var(--purple); 
  box-shadow: 0 0 20px rgba(168,85,247,0.2); 
}

/* ── SCROLLBARS ── */
::-webkit-scrollbar { 
  width: 4px; 
  height: 4px; 
}

::-webkit-scrollbar-thumb { 
  background: var(--dim); 
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .page { 
    padding: 12px; 
  }
  
  .tm-header { 
    flex-direction: column; 
  }
  
  .mode-toggle-btn {
    font-size: 0.55rem;
    padding: 10px 16px;
  }
  
  .tapes-container {
    gap: 8px;
  }
  
  .vertical-tape {
    min-width: 60px;
    padding: 8px;
  }
  
  .tape-slot {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }
}