@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@500;600;700&family=Quicksand:wght@500;600;700&display=swap');

:root {
  --rosa: #ff8fab;
  --rosa-fuerte: #ff5c8a;
  --lila: #b8a4ff;
  --lila-fuerte: #9c7cff;
  --menta: #6ee7c9;
  --menta-fuerte: #2dd4a7;
  --durazno: #ffb37b;
  --amarillo: #ffd93d;
  --cielo: #7fd8ff;
  --crema: #fff8f2;
  --texto: #4a3f5c;
  --texto-suave: #8a7f9c;
  --blanco: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Quicksand', system-ui, sans-serif;
  background:
    radial-gradient(circle at 10% 15%, rgba(255,143,171,.25), transparent 40%),
    radial-gradient(circle at 90% 10%, rgba(126,231,201,.3), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(184,164,255,.25), transparent 50%),
    var(--crema);
  color: var(--texto);
  min-height: 100vh;
}

h1, h2 { font-family: 'Fredoka', 'Quicksand', sans-serif; }

.cabecera {
  padding: 1.5rem 1.5rem 1.75rem;
  background:
    radial-gradient(circle, rgba(255,255,255,.35) 2.5px, transparent 2.5px) 0 0/22px 22px,
    linear-gradient(120deg, var(--lila-fuerte), var(--rosa-fuerte) 60%, var(--durazno));
  color: #fff;
  border-radius: 0 0 1.75rem 1.75rem;
  box-shadow: 0 6px 20px rgba(156,124,255,.25);
}
.cabecera h1 { margin: 0 0 .25rem; font-size: 1.6rem; letter-spacing: .3px; }
.cabecera p { margin: 0; opacity: .95; }
.cabecera .volver { color: #fff; text-decoration: none; font-weight: 600; opacity: .9; }
.cabecera .volver:hover { opacity: 1; text-decoration: underline; }

.nav-usuario {
  display: flex;
  gap: .9rem;
  align-items: center;
  margin-top: .85rem;
  font-size: .9rem;
}
.nav-usuario a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  background: rgba(255,255,255,.22);
  padding: .35rem .8rem;
  border-radius: 999px;
}
.nav-usuario a:hover { background: rgba(255,255,255,.35); }
.nav-usuario .form-inline { display: inline; margin: 0; }
.nav-usuario button {
  padding: .35rem .8rem;
  font-size: .85rem;
  font-weight: 700;
  background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.6);
  color: #fff;
  border-radius: 999px;
}
.nav-usuario button:hover { background: rgba(255,255,255,.3); }

.formulario-wrap { display: flex; justify-content: center; padding: 2.5rem 1rem; }
.formulario {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  width: min(100%, 380px);
  background: var(--blanco);
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: 0 12px 30px rgba(184,164,255,.25);
  border: 3px solid #f2ecff;
}
.formulario h2 { margin: 0 0 .25rem; color: var(--lila-fuerte); }
.formulario label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; font-weight: 600; color: var(--texto-suave); }
.formulario input {
  padding: .65rem .8rem;
  border: 2px solid #ece4ff;
  border-radius: .8rem;
  font-size: 1rem;
  font-family: inherit;
  background: #fbf9ff;
}
.formulario input:focus { outline: none; border-color: var(--lila); background: #fff; }
.formulario .error {
  color: var(--rosa-fuerte);
  background: #fff0f4;
  border-radius: .6rem;
  padding: .5rem .7rem;
  font-size: .85rem;
  margin: 0;
  font-weight: 600;
}
.formulario p { font-size: .9rem; color: var(--texto-suave); }
.formulario a { color: var(--rosa-fuerte); font-weight: 700; text-decoration: none; }

.galeria {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1.1rem;
  padding: 1.5rem;
}
.tarjeta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  padding: 1rem;
  background: var(--blanco);
  border-radius: 1.2rem;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 8px 20px rgba(184,164,255,.18);
  border: 3px solid transparent;
  transition: transform .15s ease, border-color .15s ease;
}
.tarjeta:hover { transform: translateY(-3px) rotate(-1.5deg); border-color: var(--menta); }
.tarjeta img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.tarjeta-nombre { font-weight: 700; font-family: 'Fredoka', sans-serif; }
.tarjeta-nivel {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: #fff;
  background: var(--menta-fuerte);
  padding: .15rem .55rem;
  border-radius: 999px;
  font-weight: 700;
}
.vacio {
  padding: 1.25rem 1.5rem;
  color: var(--texto-suave);
  background: var(--blanco);
  border-radius: 1rem;
  margin: 1rem 1.5rem;
}

.lienzo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  padding: 1.5rem;
}
.lienzo-capas {
  position: relative;
  width: min(90vw, 480px);
  aspect-ratio: 1;
  background: var(--blanco);
  border-radius: 1.25rem;
  box-shadow: 0 10px 28px rgba(184,164,255,.28);
  border: 4px solid #fff;
  outline: 3px dashed #f0c3ff;
  outline-offset: 4px;
  overflow: hidden;
  touch-action: none;
}
.lienzo-capas .capa-svg,
.lienzo-capas .capa-guia-progreso,
.lienzo-capas .capa-dibujo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.capa-svg svg { width: 100%; height: 100%; display: block; }
.capa-svg .guia-trazo { opacity: 0; }
.capa-guia-progreso { pointer-events: none; }

.controles { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; justify-content: center; }

.herramientas {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  align-items: center;
  background: var(--blanco);
  padding: 1.1rem 1.25rem;
  border-radius: 1.5rem;
  box-shadow: 0 8px 20px rgba(184,164,255,.18);
  width: min(90vw, 480px);
}

.fab-pinceles {
  position: absolute;
  top: .6rem;
  right: .6rem;
  z-index: 5;
  width: 2.9rem;
  height: 2.9rem;
  padding: 0;
  border-radius: 50%;
  background: var(--blanco);
  box-shadow: 0 6px 16px rgba(74,63,92,.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
.fab-pinceles[hidden] { display: none; }
.fab-pinceles:hover { transform: scale(1.08) rotate(-6deg); }

.panel-pinceles {
  position: absolute;
  top: 3.7rem;
  right: .6rem;
  z-index: 6;
  width: 200px;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  background: var(--blanco);
  border-radius: 1.2rem;
  padding: .9rem;
  box-shadow: 0 10px 26px rgba(74,63,92,.3);
}
.panel-pinceles[hidden] { display: none; }

.tipos-pincel { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; }
.pincel-btn {
  padding: .4rem;
  border-radius: 1rem;
  background: #f4f0ff;
  box-shadow: inset 0 0 0 2px #ece4ff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--texto);
}
.pincel-btn:hover { transform: scale(1.05); box-shadow: inset 0 0 0 2px var(--menta); }
.pincel-btn.activo {
  background: linear-gradient(135deg, #f4ecff, #ffeaf1);
  box-shadow: 0 0 0 3px var(--lila-fuerte), 0 4px 10px rgba(0,0,0,.15);
}

.control-grosor { display: flex; align-items: center; gap: .6rem; }
.grosor-preview {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--texto);
  box-shadow: 0 0 0 2px #ece4ff;
}
.control-grosor input[type="range"] {
  flex: 1;
  accent-color: var(--lila-fuerte);
}

.pista {
  text-align: center;
  font-weight: 700;
  color: var(--lila-fuerte);
  background: #f4f0ff;
  padding: .5rem 1rem;
  border-radius: 999px;
  margin: 0;
}

button {
  padding: .7rem 1.3rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--menta-fuerte), var(--cielo));
  color: #fff;
  font-weight: 700;
  font-family: 'Quicksand', sans-serif;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(45,212,167,.35);
  transition: transform .12s ease, box-shadow .12s ease;
}
button:hover { transform: translateY(-2px) scale(1.04); box-shadow: 0 8px 20px rgba(45,212,167,.45); }
button:active { transform: translateY(0) scale(.97); }
button:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }

#btnLimpiar { background: linear-gradient(120deg, var(--durazno), var(--amarillo)); box-shadow: 0 6px 16px rgba(255,179,123,.4); }
#btnGuardarDibujo { background: linear-gradient(120deg, var(--rosa-fuerte), var(--lila)); box-shadow: 0 6px 16px rgba(255,92,138,.4); }

.fila-colores { display: flex; flex-direction: column; gap: .7rem; align-items: center; width: 100%; }
.paleta-swatches { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; }
.swatch {
  width: 2.3rem;
  height: 2.3rem;
  padding: 0;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px #ece4ff, 0 4px 10px rgba(0,0,0,.1);
  transition: transform .12s ease;
}
.swatch:hover { transform: scale(1.15); }
.swatch.activo { box-shadow: 0 0 0 3px var(--lila-fuerte), 0 4px 10px rgba(0,0,0,.15); transform: scale(1.1); }

.swatch-personalizado {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  background: conic-gradient(from 180deg, #ff3b30, #ffe600, #34c759, #30b0ff, #5e5ce6, #ff2d78, #ff3b30);
  filter: drop-shadow(0 1px 1px rgba(0,0,0,.15));
}

.selector-espectro {
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  align-items: center;
  background: #faf8ff;
  border-radius: 1.2rem;
  padding: .9rem;
  box-shadow: inset 0 0 0 2px #ece4ff;
}
#canvasEspectro {
  width: 100%;
  max-width: 240px;
  aspect-ratio: 240 / 150;
  border-radius: .9rem;
  cursor: crosshair;
  touch-action: none;
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
}
.espectro-acciones { display: flex; align-items: center; gap: .5rem; width: 100%; justify-content: center; flex-wrap: wrap; }
.boton-gotero {
  padding: .45rem .8rem;
  font-size: .85rem;
  background: linear-gradient(120deg, var(--cielo), var(--lila));
  box-shadow: 0 4px 10px rgba(184,164,255,.35);
}
.boton-cerrar {
  padding: .45rem .9rem;
  font-size: .85rem;
  background: linear-gradient(120deg, var(--menta-fuerte), var(--menta));
}
.espectro-preview {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px #ece4ff, 0 3px 8px rgba(0,0,0,.15);
  background: var(--rosa);
}