/* Taller · Mi Primera IA */
.app {
  max-width: 620px;
  overflow-x: hidden;
  margin: 0 auto;
  padding: 0 16px 28px;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------- barra superior ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 0 6px;
}
.brand {
  font-family: var(--font-display);
  font-size: 1rem;
  white-space: nowrap;
  letter-spacing: .06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 3px solid var(--yellow);
  line-height: 1.1;
}
.steps {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.steps li {
  width: 19px; height: 19px;
  display: grid; place-items: center;
  border: 2px solid var(--ink);
  border-radius: 50%;
  font-size: .7rem;
  font-weight: 700;
  color: var(--ink);
  background: #fff;
  opacity: .45;
}
.steps li.on { opacity: 1; background: var(--yellow); }
.steps li.done { opacity: 1; background: var(--teal); }

/* ---------- pantallas ---------- */
main { flex: 1; }
.screen { animation: pop .22s ease-out both; }
.screen[hidden] { display: none; }
@keyframes pop {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.screen-title {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: .03em;
  margin: 8px 0 4px;
  text-transform: uppercase;
}
.kicker {
  font-family: var(--font-body);
  font-size: .68rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 18px 0 0;
}

/* ---------- portada ---------- */
.screen--home { text-align: center; padding-top: 8px; display: flex; flex-direction: column; justify-content: center; min-height: 68vh; }
.screen--home .btn { align-self: center; min-width: 240px; }
@media (max-width: 400px) {
  #btn-reset { font-size: .78rem; padding: .3rem .45rem; }
  .brand { font-size: .9rem; }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 14.6vw, 4.8rem);
  line-height: .86;
  letter-spacing: -.01em;
  margin: 10px 0 0;
  transform: rotate(-4deg);
  text-shadow: -4px 5px 0 var(--yellow), -6px 8px 0 var(--teal);
}
.hero-title span { color: var(--orange); }
.hero-note { margin: 18px auto 22px; max-width: 340px; font-size: 1.05rem; }
.hint {
  font-size: .72rem;
  color: var(--muted);
  margin: 14px 0 0;
  letter-spacing: .04em;
}

/* ---------- cámara ---------- */
.camera {
  position: relative;
  aspect-ratio: 4 / 3;
  margin: 14px 0;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0f1c1b;
  box-shadow: var(--shadow-sm);
}
.camera video,
.camera canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}
.cam-msg {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(-2deg);
  background: var(--cream);
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-family: var(--font-hand);
  font-size: .95rem;
  text-align: center;
  max-width: 85%;
  box-shadow: var(--shadow-sm);
}
.cam-msg[hidden] { display: none; }

/* ---------- etiquetas ---------- */
.labels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 12px 0;
}
.label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 4px 8px;
  border: 3px solid var(--ink);
  border-radius: var(--radius-sm);
  background: #fff;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform .08s, box-shadow .08s;
}
.label:active { transform: translate(3px, 3px); box-shadow: none; }
.label .emoji { font-size: 1.7rem; line-height: 1; }
.label .lname {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.label .count { font-size: .68rem; color: var(--muted); }
.label--orange { background: var(--orange); color: #fff; }
.label--orange .count { color: #fff; }
.label--yellow { background: var(--yellow); }
.label--teal { background: var(--teal); }
.label.is-active {
  animation: pulse .7s infinite alternate;
  outline: 4px solid var(--ink);
  outline-offset: 3px;
}
.label.is-done { opacity: .55; }
@keyframes pulse {
  from { transform: scale(1); }
  to { transform: scale(1.04) rotate(-1deg); }
}

/* ---------- fila de botones ---------- */
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 16px 0 0;
}

/* ---------- entrenamiento ---------- */
.screen--train { text-align: center; }
.train-card {
  margin: 16px 0;
  padding: 18px 16px 12px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.bar {
  height: 22px;
  border: 2px solid var(--ink);
  border-radius: 11px;
  background: var(--cream);
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  width: 0;
  background: repeating-linear-gradient(45deg, var(--yellow) 0 12px, #ffe94a 12px 24px);
  transition: width .18s linear;
}
.epoch {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: .05em;
  margin: 12px 0 6px;
}
.log {
  list-style: none;
  margin: 0;
  padding: 0;
  min-height: 92px;
  font-family: var(--font-hand);
  font-size: .9rem;
  color: var(--muted);
  text-align: left;
}
.log li { animation: pop .2s ease-out both; }
.neurons {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 6px 0 2px;
}
.neurons i {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  background: var(--teal);
  animation: blink 1s infinite alternate;
}
.neurons i:nth-child(3n) { background: var(--orange); animation-delay: .2s; }
.neurons i:nth-child(3n+1) { background: var(--yellow); animation-delay: .4s; }
@keyframes blink { from { opacity: .25; transform: scale(.8); } to { opacity: 1; transform: scale(1); } }

/* ---------- juego ---------- */
.scorebar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: .05em;
  border-bottom: 2px dashed var(--ink);
  padding-bottom: 6px;
}
.scorebar b { font-size: 1.6rem; }
.scorebar .round { font-size: .8rem; color: var(--muted); letter-spacing: .16em; }
.camera--play { margin-top: 12px; }
.countdown {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(23, 46, 45, .35);
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--yellow);
  text-shadow: -4px 4px 0 var(--ink);
}
.countdown[hidden] { display: none; }

.verdict {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px 14px;
  margin: 10px 0 0;
}
.pick {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  line-height: 1;
  min-height: 2.1rem;
}
.pick.win { color: var(--teal); }
.pick.lose { color: var(--orange); }
.pick.unsure { color: var(--muted); font-size: 1.3rem; }
.conf {
  width: 110px;
  height: 14px;
  border: 2px solid var(--ink);
  border-radius: 7px;
  background: #fff;
  overflow: hidden;
}
.conf-fill { height: 100%; width: 0; background: var(--teal); transition: width .2s; }
#play-msg { grid-column: 1 / -1; margin: 0; }

/* ---------- evaluación ---------- */
.accuracy {
  text-align: center;
  margin: 8px 0;
  padding: 14px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
}
.accuracy[hidden] { display: none; }
.acc-num {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
}
.acc-lbl { font-family: var(--font-hand); font-size: .95rem; }

.foot {
  margin-top: 26px;
  text-align: center;
  font-size: .55rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (min-width: 720px) {
  .app { max-width: 700px; padding-bottom: 40px; }
  .camera { max-height: 60vh; }
  .camera video, .camera canvas { object-fit: contain; }
}

#btn-reset { font-size: .9rem; padding: .35rem .55rem; border-width: 2px; box-shadow: none; }