/* ===========================================================
   Workspace (MDI emulado) — Office 2010 Blue
   =========================================================== */

.workspace {
  display: grid;
  grid-template-rows: var(--h-workspace-tabs) 1fr;
  background: var(--bg-workspace);
  overflow: hidden;
  min-height: 0;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
}

/* Cuando no hay tabs abiertos, el workspace es MDI completo */
.workspace:has(.ws-tabs:empty) {
  grid-template-rows: 1fr;
}

/* ---------- Tabs del workspace (módulos abiertos) ---------- */
.ws-tabs {
  display: flex;
  align-items: flex-end;
  background: var(--bg-workspace);
  padding: 2px 4px 0;
  gap: 0;
  overflow-x: auto;
  overflow-y: hidden;
  border-bottom: 1px solid #5a6779;
}
.ws-tabs:empty { display: none; }
.ws-tabs::-webkit-scrollbar { height: 4px; }

.ws-tab {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-3);
  height: calc(var(--h-workspace-tabs) - 2px);
  background: linear-gradient(180deg, #8d9aab 0%, #707d8f 100%);
  color: #f0f3f7;
  border: 1px solid #5a6779;
  border-bottom: none;
  border-top-left-radius: 3px;
  border-top-right-radius: 3px;
  font-size: var(--fs-sm);
  cursor: pointer;
  max-width: 220px;
  transition: background var(--t-fast);
  position: relative;
  margin-right: 1px;
  text-shadow: 0 1px 0 rgba(0,0,0,0.25);
}
.ws-tab:hover { background: linear-gradient(180deg, #9dabbc 0%, #7f8da1 100%); }
.ws-tab[aria-selected="true"] {
  background: linear-gradient(180deg, #fdfdfe 0%, #f4f7fb 100%);
  color: var(--text);
  height: var(--h-workspace-tabs);
  font-weight: var(--fw-semi);
  margin-bottom: -1px;
  border-color: var(--border-ribbon);
  border-bottom: 1px solid #fdfdfe;
  z-index: 1;
  text-shadow: none;
  box-shadow: 0 -2px 0 var(--ofc-blue-500) inset;
}
.ws-tab__icon {
  width: 14px; height: 14px;
  display: grid; place-items: center;
  color: inherit;
  flex-shrink: 0;
  opacity: 0.9;
}
.ws-tab[aria-selected="true"] .ws-tab__icon { color: var(--ofc-blue-700); opacity: 1; }
.ws-tab__icon svg { width: 14px; height: 14px; }
.ws-tab__label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ws-tab__dirty {
  color: var(--warning);
  font-weight: var(--fw-bold);
  margin-left: -2px;
}
.ws-tab__close {
  width: 16px; height: 16px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: inherit;
  margin-left: var(--sp-1);
  font-size: 10px;
  transition: background var(--t-fast), color var(--t-fast);
  opacity: 0.75;
}
.ws-tab__close:hover {
  background: #c42c2c;
  color: #fff;
  opacity: 1;
}

/* ---------- Área de contenido ---------- */
.ws-content {
  background: #fdfdfe;
  overflow: auto;
  padding: 0;
  position: relative;
  border: 1px solid #5a6779;
  border-top: none;
  margin: 0 4px 4px;
}

/* Empty state cuando no hay tabs abiertos */
.ws-empty {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-workspace);
  color: rgba(255,255,255,0.85);
  gap: var(--sp-4);
  user-select: none;
  text-shadow: 0 1px 0 rgba(0,0,0,0.3);
}
.ws-empty__icon {
  width: 96px; height: 96px;
  display: grid; place-items: center;
  color: rgba(255,255,255,0.35);
}
.ws-empty__icon svg { width: 96px; height: 96px; }
.ws-empty__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semi);
  color: #fff;
}
.ws-empty__hint {
  font-size: var(--fs-sm);
  max-width: 500px;
  text-align: center;
  line-height: 1.6;
}
.ws-empty__hint kbd {
  display: inline-block;
  padding: 1px 6px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #fff;
  text-shadow: none;
}

/* Panel de contenido por módulo (uno por tab) */
.ws-panel {
  display: none;
  height: 100%;
  padding: var(--sp-5);
}
.ws-panel[data-active="true"] { display: block; }
.ws-panel--full { padding: 0; overflow: hidden; }
.ws-panel--full[data-active="true"] { display: flex; flex-direction: column; }

.ws-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-4);
}
.ws-panel__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semi);
  color: var(--ofc-blue-900);
  margin: 0;
  display: flex; align-items: center; gap: var(--sp-2);
}
.ws-panel__title svg { width: 18px; height: 18px; color: var(--ofc-blue-700); }

.ws-panel__placeholder {
  padding: var(--sp-6);
  background: var(--sil-50);
  border: 1px dashed var(--border-strong);
  border-radius: 3px;
  color: var(--text-muted);
  text-align: center;
  font-size: var(--fs-sm);
}
.ws-panel__placeholder strong { color: var(--text); }