.p4-panel {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: var(--p4-spacing-20);
  border-inline-start: var(--p4-core-hairline) solid var(--p4-color-border-soft);
  background: var(--p4-color-white);
  font-size: var(--p4-core-font-size-12);
}

.p4-panel__toggle {
  display: none;
}

.p4-panel__group {
  padding-block: var(--p4-spacing-16);
  border-bottom: var(--p4-core-hairline) solid var(--p4-color-border-soft);
}

.p4-panel__group:last-child {
  border-bottom: 0;
}

.p4-panel__legend {
  display: block;
  margin-bottom: var(--p4-spacing-12);
  font-size: var(--p4-core-font-size-11);
  letter-spacing: var(--p4-core-letter-spacing-0-16em);
  text-transform: uppercase;
  color: var(--p4-color-text-muted);
}

.p4-panel__legend-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--p4-spacing-8);
}

.p4-panel__legend-row .p4-panel__legend {
  margin-bottom: var(--p4-spacing-12);
}

.p4-info {
  width: 24px;
  height: 24px;
  margin-bottom: var(--p4-spacing-12);
  padding: 0;
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  border-radius: 50%;
  background: transparent;
  font-family: Georgia, "Times New Roman", serif;
  font-size: var(--p4-core-font-size-12);
  font-style: italic;
  line-height: 1;
  color: var(--p4-color-text-muted);
  cursor: pointer;
}

.p4-info:hover {
  border-color: var(--p4-color-black);
  background: var(--p4-color-black);
  color: var(--p4-color-white);
}

.p4-field {
  display: grid;
  gap: var(--p4-spacing-4);
  margin-bottom: var(--p4-spacing-12);
}

.p4-field__label {
  display: flex;
  justify-content: space-between;
  gap: var(--p4-spacing-8);
}

.p4-field__value {
  font-family: var(--p4-font-family-mono);
  color: var(--p4-color-text-muted);
}

.p4-field__hint {
  margin: var(--p4-spacing-4) 0 0;
  font-size: var(--p4-core-font-size-11);
  line-height: 1.4;
  color: var(--p4-color-text-muted);
}

.p4-field input[type="range"] {
  width: 100%;
  min-height: 24px;
  accent-color: var(--p4-color-black);
}

.p4-field select {
  width: 100%;
  height: 32px;
  padding-inline: var(--p4-spacing-8);
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  background: var(--p4-color-white);
}

.p4-field input[type="text"] {
  width: 100%;
  height: 32px;
  padding-inline: var(--p4-spacing-8);
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  background: var(--p4-color-white);
  font-family: var(--p4-font-family-mono);
  font-size: var(--p4-core-font-size-11);
}

.p4-field textarea {
  width: 100%;
  padding: var(--p4-spacing-8);
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  background: var(--p4-color-white);
  font-size: var(--p4-core-font-size-12);
  line-height: 1.4;
  resize: vertical;
}

.p4-check {
  display: flex;
  align-items: center;
  gap: var(--p4-spacing-8);
  padding-block: var(--p4-spacing-4);
}

.p4-check input {
  accent-color: var(--p4-color-black);
}

.p4-button {
  width: 100%;
  height: 36px;
  margin-top: var(--p4-spacing-8);
  border: var(--p4-core-hairline) solid var(--p4-color-black);
  background: var(--p4-color-white);
  cursor: pointer;
  letter-spacing: var(--p4-core-letter-spacing-0-04em);
}

.p4-button:hover {
  background: var(--p4-color-black);
  color: var(--p4-color-white);
}

.p4-button--ghost {
  border-color: var(--p4-color-border);
}

.p4-panel__readout {
  margin-top: var(--p4-spacing-8);
  font-family: var(--p4-font-family-mono);
  font-size: var(--p4-core-font-size-11);
  line-height: 1.5;
  color: var(--p4-color-text-muted);
  word-break: break-word;
}

.p4-panel__status {
  min-height: 16px;
  margin-top: var(--p4-spacing-8);
  color: var(--p4-color-text-muted);
}

.p4-output {
  width: 100%;
  min-height: 160px;
  margin-top: var(--p4-spacing-8);
  padding: var(--p4-spacing-8);
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  font-family: var(--p4-font-family-mono);
  font-size: var(--p4-core-font-size-11);
  line-height: 1.5;
  resize: vertical;
  white-space: pre;
}

:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--p4-color-black);
  outline-offset: 2px;
}

/* Glosario */

.p4-modal {
  width: min(680px, calc(100vw - var(--p4-spacing-64)));
  max-height: 80vh;
  padding: var(--p4-spacing-40);
  border: var(--p4-core-hairline) solid var(--p4-color-border);
  background: var(--p4-color-white);
  color: var(--p4-color-text);
  overflow-y: auto;
}

.p4-modal::backdrop {
  background: rgb(0 0 0 / 35%);
}

.p4-modal__close {
  position: absolute;
  top: var(--p4-spacing-12);
  inset-inline-end: var(--p4-spacing-16);
  padding: var(--p4-spacing-4);
  border: 0;
  background: transparent;
  font-size: var(--p4-core-font-size-16);
  line-height: 1;
  cursor: pointer;
}

.p4-glossary {
  margin: var(--p4-spacing-24) 0;
}

.p4-glossary dt {
  display: flex;
  align-items: center;
  gap: var(--p4-spacing-8);
  margin-top: var(--p4-spacing-24);
  font-size: var(--p4-core-font-size-12);
  letter-spacing: var(--p4-core-letter-spacing-0-16em);
  text-transform: uppercase;
}

.p4-glossary dt:first-child {
  margin-top: 0;
}

.p4-glossary dd {
  margin: var(--p4-spacing-8) 0 0;
  padding-inline-start: 22px;
  color: var(--p4-color-text-muted);
  max-width: 62ch;
}

.p4-modal code {
  font-family: var(--p4-font-family-mono);
  font-size: 0.92em;
}

.p4-modal .p4-note {
  margin-top: var(--p4-spacing-16);
  padding-top: var(--p4-spacing-16);
  border-top: var(--p4-core-hairline) solid var(--p4-color-border-soft);
}

@media (max-width: 1180px) {
  /* Barra fija abajo: al abrirla ocupa media pantalla y deja ver la muestra mientras se ajusta. */
  .p4-panel {
    position: fixed;
    inset: auto 0 0;
    z-index: 10;
    height: auto;
    max-height: 50vh;
    padding: 0;
    overflow: hidden;
    border-inline-start: 0;
    border-top: var(--p4-core-hairline) solid var(--p4-color-border);
    box-shadow: 0 -2px 12px rgb(0 0 0 / 8%);
  }

  .p4-panel__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--p4-spacing-8);
    width: 100%;
    min-height: 48px;
    padding-inline: var(--p4-spacing-20);
    border: 0;
    background: var(--p4-color-white);
    font-size: var(--p4-core-font-size-11);
    letter-spacing: var(--p4-core-letter-spacing-0-16em);
    text-transform: uppercase;
    cursor: pointer;
  }

  .p4-panel__toggle::after {
    content: "\25B2";
    font-size: 9px;
  }

  .p4-panel__toggle[aria-expanded="true"]::after {
    content: "\25BC";
  }

  .p4-panel__body {
    display: none;
    max-height: calc(50vh - 48px);
    padding-inline: var(--p4-spacing-20);
    padding-bottom: var(--p4-spacing-20);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .p4-panel__toggle[aria-expanded="true"] + .p4-panel__body {
    display: block;
  }

  /* Hueco para que la barra colapsada no tape el final de la página. */
  .p4-main {
    padding-bottom: calc(var(--p4-spacing-96) + 48px);
  }
}