/**
 * IMPACTO — Sistema de diseño del panel de alumno.
 * Deriva de la guía de marca: Night dominante, amarillo como acento puntual.
 */

:root {
  /* Color */
  --imp-night: #0F0F0F;
  --imp-jet: #2A2929;
  --imp-olive: #444342;
  --imp-yellow: #FFB700;
  --imp-jonquil: #FFD000;
  --imp-offwhite: #F4F1EA;
  --imp-grey: #D9D6CE;
  --imp-dim: #9C988F;

  --imp-surface: linear-gradient(160deg, #2f2e2c, #2A2929);
  --imp-surface-dark: linear-gradient(160deg, #1a1a19, #0F0F0F);

  --imp-success: #4ED88A;
  --imp-danger: #FF6B6B;
  --imp-locked: #5c5a56;

  /* Tipografía */
  --imp-font: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;

  /* Espaciado */
  --imp-gap-xs: 6px;
  --imp-gap-sm: 12px;
  --imp-gap: 20px;
  --imp-gap-lg: 32px;
  --imp-gap-xl: 56px;

  /* Radios — esquinas asimétricas, seña de identidad de la marca */
  --imp-radius: 6px 18px 6px 18px;
  --imp-radius-soft: 4px 16px 16px 4px;
  --imp-radius-sm: 8px;

  /* Sombras */
  --imp-shadow: 0 14px 34px rgba(0, 0, 0, .35);
  --imp-shadow-lg: 0 20px 46px rgba(0, 0, 0, .45);
  --imp-glow: 0 10px 24px rgba(255, 183, 0, .28);

  --imp-border: 1px solid rgba(255, 255, 255, .06);
  --imp-transition: .18s cubic-bezier(.34, 1.56, .64, 1);
}

/* ---------- Base ---------- */
.imp {
  font-family: var(--imp-font);
  color: var(--imp-offwhite);
  line-height: 1.5;
}

.imp *,
.imp *::before,
.imp *::after { box-sizing: border-box; }

.imp a { color: inherit; text-decoration: none; }

/* ---------- Tipografía ---------- */
.imp-eyebrow {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--imp-jonquil);
}

.imp-h1 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; line-height: 1.15; letter-spacing: -.5px; }
.imp-h2 { font-size: clamp(20px, 2.6vw, 27px); font-weight: 700; line-height: 1.2; }
.imp-h3 { font-size: 17px; font-weight: 700; }
.imp-body { font-size: 14px; font-weight: 300; color: var(--imp-grey); }
.imp-meta { font-size: 12px; color: var(--imp-dim); }

/* Nunca usar --imp-olive como color de texto: no contrasta sobre fondo oscuro. */

/* ---------- Superficies ---------- */
.imp-card {
  background: var(--imp-surface);
  border: var(--imp-border);
  border-radius: var(--imp-radius);
  box-shadow: var(--imp-shadow);
  padding: var(--imp-gap);
}

.imp-card--dark { background: var(--imp-surface-dark); }

.imp-card--accent {
  border: 2px solid var(--imp-yellow);
  box-shadow: 0 20px 46px rgba(255, 183, 0, .16);
}

/* ---------- Botones ---------- */
.imp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--imp-yellow);
  color: var(--imp-night);
  font-family: var(--imp-font);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .4px;
  text-transform: uppercase;
  padding: 15px 30px;
  border: none;
  border-radius: var(--imp-radius-sm);
  cursor: pointer;
  transition: transform var(--imp-transition), background .15s ease, box-shadow .18s ease;
}

.imp-btn:hover {
  background: var(--imp-jonquil);
  transform: translateY(-2px) rotate(-1deg) scale(1.03);
  box-shadow: var(--imp-glow);
}

.imp-btn:active { transform: translateY(0) scale(.98); }

.imp-btn--ghost {
  background: transparent;
  border: 2px solid rgba(244, 241, 234, .28);
  color: var(--imp-offwhite);
  padding: 13px 28px;
}

.imp-btn--ghost:hover {
  border-color: var(--imp-yellow);
  color: var(--imp-yellow);
  background: transparent;
  box-shadow: none;
}

.imp-btn--sm { padding: 10px 18px; font-size: 12px; }

.imp-btn[disabled],
.imp-btn--locked {
  background: var(--imp-jet);
  color: var(--imp-dim);
  cursor: not-allowed;
  box-shadow: none;
}

.imp-btn[disabled]:hover,
.imp-btn--locked:hover { transform: none; background: var(--imp-jet); box-shadow: none; }

/* ---------- Progreso ---------- */
.imp-bar {
  height: 8px;
  background: #333230;
  border-radius: 4px;
  overflow: hidden;
}

.imp-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--imp-yellow), var(--imp-jonquil));
  border-radius: 4px;
  transition: width .5s ease;
}

/* Segunda barra del progreso doble: piezas publicadas */
.imp-bar--pieces .imp-bar__fill {
  background: linear-gradient(90deg, var(--imp-success), #8FE8B4);
}

/* ---------- Estados de bloqueo ---------- */
.imp-locked { position: relative; }

.imp-locked__overlay {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--imp-yellow);
  background: rgba(255, 183, 0, .1);
  border: 1px solid rgba(255, 183, 0, .3);
  border-radius: var(--imp-radius-sm);
  padding: 9px 14px;
  margin-top: var(--imp-gap-sm);
}

.imp-locked--drip .imp-locked__overlay {
  color: var(--imp-grey);
  background: rgba(255, 255, 255, .05);
  border-color: rgba(255, 255, 255, .12);
}

/* ---------- Insignias ---------- */
.imp-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 4px;
  background: rgba(255, 183, 0, .14);
  color: var(--imp-yellow);
}

.imp-badge--done { background: rgba(78, 216, 138, .14); color: var(--imp-success); }
.imp-badge--locked { background: rgba(255, 255, 255, .06); color: var(--imp-dim); }
.imp-badge--sticker { background: var(--imp-yellow); color: var(--imp-night); transform: rotate(-3deg); }

/* ---------- Rejilla ---------- */
.imp-grid { display: grid; gap: var(--imp-gap); }
.imp-grid--2 { grid-template-columns: repeat(2, 1fr); }
.imp-grid--3 { grid-template-columns: repeat(3, 1fr); }
.imp-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .imp-grid--3, .imp-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .imp-grid--2, .imp-grid--3, .imp-grid--4 { grid-template-columns: 1fr; }
}

/* ---------- Accesibilidad ---------- */
.imp-btn:focus-visible,
.imp a:focus-visible {
  outline: 2px solid var(--imp-jonquil);
  outline-offset: 3px;
}

.imp-sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .imp-btn, .imp-bar__fill { transition: none; }
  .imp-btn:hover { transform: none; }
}