/* ============================================================
   Circufy — Máquina de Turing
   Archivo: turing.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: 0.15; 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: '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; 
}

.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: 'Orbitron', monospace; 
  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(0,220,255,0.08); 
  cursor: default; 
}

.nav-status { 
  display: flex; 
  align-items: center; 
  gap: 7px; 
  font-family: 'Share Tech Mono', monospace; 
  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: 'Orbitron', monospace; 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; }
.tm-presets { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.presets-label { font-size: 0.62rem; color: var(--dim2); font-family: 'Orbitron', monospace; letter-spacing: 0.1em; }
.preset-btn { padding: 6px 14px; border: 1px solid var(--purple); background: rgba(168,85,247,0.08); color: var(--purple); font-family: 'Share Tech Mono', monospace; font-size: 0.68rem; cursor: pointer; transition: all 0.2s; }
.preset-btn:hover { background: rgba(168,85,247,0.2); box-shadow: 0 0 14px rgba(168,85,247,0.3); }

/* ── 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: 'Orbitron', monospace; font-size: 0.6rem; color: var(--purple); letter-spacing: 0.15em; flex: 1; }

/* ── DIAGRAM ── */
.diagram-tools { display: flex; gap: 4px; flex-wrap: wrap; }
.dtool-btn {
  padding: 4px 10px; border: 1px solid var(--dim); background: transparent;
  color: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 0.6rem;
  cursor: pointer; transition: all 0.2s; display: flex; align-items: center; gap: 5px;
}
.dtool-btn svg { width: 14px; height: 14px; }
.dtool-btn:hover { border-color: var(--purple); color: var(--purple); }
.dtool-btn.active { border-color: var(--gold); color: var(--gold); background: rgba(255,230,0,0.07); }
.dtool-btn.danger.active { border-color: var(--red); color: var(--red); background: rgba(255,45,107,0.07); }

.diagram-wrap { position: relative; width: 100%; }
#diagramCanvas { display: block; width: 100%; height: 400px; cursor: crosshair; }
.diagram-hint {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  font-family: 'Orbitron', monospace; font-size: 0.7rem; color: var(--dim2);
  text-align: center; pointer-events: none; letter-spacing: 0.1em;
  transition: opacity 0.3s;
}
.diagram-hint.hidden { opacity: 0; }

.diagram-legend { display: flex; align-items: center; gap: 12px; padding: 6px 14px; border-top: 1px solid var(--border); font-size: 0.65rem; flex-wrap: wrap; }
.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; }
.leg-dot.initial { color: var(--green); }
.leg-dot.final { color: var(--gold); border-width: 3px; }
.leg-dot.normal { color: var(--neon); }

/* ── TAPE ── */
.tape-controls-mini { display: flex; gap: 6px; flex-wrap: wrap; }
.tape-mini-btn {
  padding: 4px 12px; border: 1px solid var(--dim); background: transparent;
  color: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 0.6rem;
  cursor: pointer; transition: all 0.2s;
}
.tape-mini-btn:hover:not(:disabled) { border-color: var(--neon); color: var(--neon); }
.tape-mini-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.tape-mini-btn.gold { border-color: var(--gold); color: var(--gold); }
.tape-mini-btn.gold:hover { background: rgba(255,230,0,0.1); }
.tape-mini-btn.green { border-color: var(--green); color: var(--green); }
.tape-mini-btn.green:hover { background: rgba(0,255,170,0.1); }

.tape-wrap { padding: 16px 14px 8px; overflow-x: auto; }
.tape-row { display: flex; gap: 0; align-items: center; justify-content: center; min-height: 52px; }
.tape-head-row { display: flex; gap: 0; justify-content: center; margin-top: 2px; min-height: 20px; }

.tape-cell {
  width: 48px; height: 48px; border: 1px solid var(--dim); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Orbitron', monospace; font-size: 1.1rem; font-weight: 700;
  color: var(--dim2); transition: all 0.25s; position: relative;
  background: var(--panel2);
}
.tape-cell.active { border-color: var(--gold); color: var(--gold); background: rgba(255,230,0,0.1); box-shadow: 0 0 18px rgba(255,230,0,0.3); transform: scaleY(1.06); z-index: 2; }
.tape-cell.v1 { color: var(--green); }
.tape-cell.v0 { color: var(--red); }
.tape-cell.vX, .tape-cell.vY { color: var(--purple); }
.tape-cell.blank { color: var(--dim); }

.tape-head-cell { width: 48px; flex-shrink: 0; display: flex; justify-content: center; font-size: 0.55rem; color: var(--gold); }
.tape-head-cell.active { color: var(--gold); }

.tape-info-row { display: flex; gap: 0; border-top: 1px solid var(--border); }
.tape-stat { flex: 1; padding: 8px 10px; border-right: 1px solid var(--border); text-align: center; }
.tape-stat:last-child { border-right: none; }
.ts-label { display: block; font-size: 0.5rem; color: var(--dim2); font-family: 'Orbitron', monospace; letter-spacing: 0.1em; margin-bottom: 2px; }
.ts-val { display: block; font-family: 'Share Tech Mono', monospace; font-size: 0.82rem; color: var(--neon); }

/* ── CONSOLE ── */
.console-wrap { height: 160px; overflow-y: auto; padding: 8px 14px; font-family: 'Share Tech Mono', monospace; 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-banner {
  padding: 14px; text-align: center;
  font-family: 'Orbitron', monospace; font-size: 0.9rem; font-weight: 900;
  letter-spacing: 0.15em; border-top: 1px solid var(--border);
  transition: all 0.4s;
}
.result-banner.accepted { background: rgba(0,255,170,0.12); color: var(--green); border-top-color: rgba(0,255,170,0.3); }
.result-banner.rejected { background: rgba(255,45,107,0.12); color: var(--red); border-top-color: rgba(255,45,107,0.3); }
.result-banner.hidden { display: none; }

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

/* ── TRANSITIONS FORM ── */
.trans-form { padding: 12px 14px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.form-row { display: flex; align-items: center; gap: 10px; }
.form-row label { font-size: 0.65rem; color: var(--dim2); min-width: 100px; font-family: 'Share Tech Mono', monospace; }
.tm-select {
  flex: 1; padding: 5px 8px; background: var(--panel2); border: 1px solid var(--dim);
  color: var(--neon); font-family: 'Share Tech Mono', monospace; font-size: 0.68rem;
  cursor: pointer; outline: none;
}
.tm-select:focus { border-color: var(--purple); }
.move-btns { display: flex; gap: 6px; }
.move-btn {
  flex: 1; padding: 5px 14px; border: 1px solid var(--dim); background: transparent;
  color: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 0.68rem;
  cursor: pointer; transition: all 0.2s;
}
.move-btn.active { border-color: var(--gold); color: var(--gold); background: rgba(255,230,0,0.08); }

.add-trans-btn {
  padding: 8px; border: 1px solid var(--purple); background: rgba(168,85,247,0.08);
  color: var(--purple); font-family: 'Orbitron', monospace; font-size: 0.6rem;
  cursor: pointer; transition: all 0.2s; width: 100%; letter-spacing: 0.1em; margin-top: 4px;
}
.add-trans-btn:hover { background: rgba(168,85,247,0.2); box-shadow: 0 0 14px rgba(168,85,247,0.3); }

.trans-count {
  background: var(--purple); color: #fff; font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem; padding: 2px 8px; border-radius: 2px;
}

.trans-list { max-height: 220px; overflow-y: auto; }
.trans-empty { padding: 14px; text-align: center; font-size: 0.65rem; color: var(--dim2); }
.trans-item {
  display: flex; align-items: center; gap: 6px; padding: 6px 14px;
  border-bottom: 1px solid rgba(0,0,0,0.3); font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem; transition: background 0.15s;
}
.trans-item:hover { background: rgba(0,220,255,0.04); }
.trans-item.active-trans { background: rgba(255,230,0,0.08); border-left: 3px solid var(--gold); }
.ti-from { color: var(--neon); min-width: 28px; }
.ti-arrow { color: var(--dim2); }
.ti-rule { color: var(--text); flex: 1; }
.ti-del { padding: 2px 6px; border: 1px solid transparent; background: transparent; color: var(--dim2); cursor: pointer; font-size: 0.6rem; transition: all 0.2s; }
.ti-del:hover { border-color: var(--red); color: var(--red); }

/* ── INPUT SECTION ── */
.input-section { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.input-label { font-size: 0.62rem; color: var(--dim2); font-family: 'Share Tech Mono', monospace; }
.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: 'Orbitron', monospace; 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); }
.tm-input.error { border-color: var(--red); color: var(--red); }
.input-hint { font-size: 0.58rem; color: var(--dim2); }
.exec-btns { display: flex; gap: 8px; }
.exec-btn {
  flex: 1; padding: 10px; font-family: 'Orbitron', monospace; 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(--red); color: var(--red); }
.speed-ctrl { display: flex; align-items: center; gap: 8px; font-size: 0.62rem; color: var(--dim2); }
.speed-ctrl label { font-family: 'Share Tech Mono', monospace; white-space: nowrap; }
.speed-slider { flex: 1; accent-color: var(--purple); cursor: pointer; }

/* ── DELTA TABLE ── */
.delta-table-wrap { padding: 10px 14px; overflow-x: auto; }
table.delta-tt { width: 100%; border-collapse: collapse; font-family: 'Share Tech Mono', monospace; font-size: 0.65rem; }
table.delta-tt th { background: rgba(168,85,247,0.12); color: var(--purple); padding: 5px 8px; border: 1px solid rgba(168,85,247,0.2); text-align: center; }
table.delta-tt td { padding: 5px 8px; text-align: center; border: 1px solid rgba(255,255,255,0.04); color: var(--dim2); }
table.delta-tt td.defined { color: var(--neon); }
table.delta-tt td.active-cell { background: rgba(255,230,0,0.1); color: var(--gold); font-weight: bold; }

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

::-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; }
  .diagram-tools { gap: 3px; }
  .dtool-btn { padding: 3px 7px; font-size: 0.55rem; }
}