:root{
  --bg0:#05050A;
  --bg1:#070717;
  --card: rgba(255,255,255,.06);
  --stroke: rgba(255,255,255,.10);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --muted2: rgba(255,255,255,.55);

  --magenta:#FF00FF;
  --cyan:#00FFFF;
  --violet:#8A2BE2;

  --radius: 22px;
  --shadow: 0 20px 60px rgba(0,0,0,.55);
}

*{ box-sizing:border-box; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(900px 700px at 15% 20%, rgba(0,255,255,.10), transparent 60%),
    radial-gradient(900px 700px at 80% 30%, rgba(255,0,255,.10), transparent 60%),
    radial-gradient(900px 700px at 60% 80%, rgba(138,43,226,.10), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg0));
}

.wrap{
  max-width: 860px;
  margin: 0 auto;
  padding: 22px 18px 34px;
}


.topbar{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:28px 28px 12px;
  margin: 0 auto;
}
.brand{ display:flex; gap:10px; align-items:flex-start; }
.dot{
  width:10px; height:10px; margin-top:10px;
  border-radius:999px;
  background: radial-gradient(circle at 30% 30%, var(--cyan), var(--magenta));
  box-shadow: 0 0 22px rgba(0,255,255,.22), 0 0 22px rgba(255,0,255,.18);
}
.kicker{
  letter-spacing:.16em;
  font-size:12px;
  color: var(--muted2);
}
h1{ margin:6px 0 6px; font-size:30px; line-height:1.05; }
.brand p{ margin:0; color: var(--muted); max-width: 700px; }

.topActions{ display:flex; gap:12px; padding-top: 10px; }
.btn{
  border-radius: 999px;
  padding: 10px 14px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-width: 44px;
}
.btn:hover{ background: rgba(255,255,255,.07); }
.btnAccent{
  border-color: rgba(0,255,255,.45);
  background: rgba(0,255,255,.08);
  color: var(--text);
  box-shadow: 0 0 0 1px rgba(255,0,255,.20) inset, 0 0 30px rgba(0,255,255,.08);
}


.layout{
  align-items: flex-start;
  display:grid;
  grid-template-columns: 1.3fr .7fr;
  gap:8px;
}

.card{
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.stage{ padding:16px; margin: 0 auto;}
.toolbar{
  display:flex;
  align-items:center;
  gap:10px;
  padding: 6px 6px 14px;
  flex-wrap: wrap;
}
.pill{
  display:flex; align-items:center; gap:10px;
  border: 1px solid var(--stroke);
  background: rgba(0,0,0,.22);
  border-radius: 999px;
  padding: 8px 10px;
}
.pillLabel{ font-size: 12px; letter-spacing: .18em; color: var(--muted2); }

.select, .input{
  border: 1px solid var(--stroke);
  background: rgba(0,0,0,.20);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 12px;
  outline: none;
}

.canvasWrap{
  position:relative;
  border-radius: 18px;
  overflow:hidden;
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.08);
  aspect-ratio: 1/1;
  margin: 0 auto;
  width: 480px;
  height: auto;
}
canvas{
  width:100%;
  display:block;
  height: 100%;
}

.hint{
  padding: 12px 4px 0;
  color: var(--muted2);
  font-size: 13px;
}

.panel{ 
  position: sticky;
  top: 18px;
  height: fit-content;
  padding: 20px 0px;
  display:flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;}
.panel h2{ margin:0 0 12px; font-size: 18px; }
.grid{
  display:grid;
  gap: 2px;
}
.ctrl label{
  display:block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}
.row{
  display:flex;
  align-items:center;
  gap:10px;
}
.rowTight{ gap:10px; margin-top: 6px; }
.val{
  min-width: 84px;
  text-align:right;
  font-variant-numeric: tabular-nums;
  color: var(--muted2);
  font-size: 12px;
}

input[type="range"]{
  width:100%;
  accent-color: var(--cyan);
}

.panelFooter{
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.mini{ font-size: 12px; color: var(--muted2); }

/* Responsive */
@media (max-width: 980px){
  .layout{ grid-template-columns: 1fr; }
  .topbar{ flex-direction: column; }
  h1{ font-size: 24px; }
}
@media (max-width: 460px){
  .topbar{ padding: 18px 18px 10px; }
  .layout{ padding: 10px 18px 24px; }
  h1{ font-size: 24px; }
  .btn{ padding: 10px 12px; }
  .val{ min-width: 72px; }
}
/* =========================
   RESPONSIVE (MÓVIL/TABLET)
   ========================= */

@media (max-width: 980px){
  .wrap{
    max-width: 860px;
    padding: 18px 14px 26px;
  }

  .topbar{
    flex-direction: column;
    padding: 18px 14px 10px;
    gap: 12px;
  }

  .topActions{
    padding-top: 0;
    width: 100%;
    justify-content: flex-start; /* o flex-end si prefieres */
  }

  h1{
    font-size: 34px;
    line-height: 1.08;
  }

  .layout{
    grid-template-columns: 1fr;  /* ✅ una sola columna */
    gap: 14px;
  }

  .stage{
    padding: 14px;
  }

  .toolbar{
    gap: 8px;
    padding: 6px 4px 12px;
  }

  /* Canvas tipo Brownian: ancho completo pero no gigante */
  .canvasWrap{
    width: 100%;
    max-width: 520px;   /* ajusta 480–560 según tu gusto */
    height: auto;       /* deja que aspect-ratio mande */
    aspect-ratio: 1 / 1;/* ✅ similar a Brownian */
  }

  canvas{
    width: 100%;
    height: 100%;
  }
}

@media (max-width: 460px){
  .wrap{
    padding: 16px 12px 22px;
  }

  h1{
    font-size: 30px;
  }

  .btn{
    padding: 10px 12px;
    min-width: 42px;
  }

  /* En teléfonos chicos, un poquito más alto para que respire */
  .canvasWrap{
    max-width: 100%;
    aspect-ratio: 4 / 5; /* o 1/1 si lo quieres cuadrado sí o sí */
  }

  .select, .input{
    width: 100%;
  }
}