/* ==========================================================================
   LAYOUT · estructura de la app, navegación y vistas
   ========================================================================== */
.app {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  height: 100dvh;
}

/* ---------- Riel lateral ---------- */
.rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-3) var(--space-4);
  border-right: 1px solid var(--line);
  background: color-mix(in oklab, var(--surface) 40%, var(--bg));
  overflow-y: auto;
  z-index: 20;
}
.rail-brand {
  display: flex;
  align-items: center;
  gap: .6em;
  padding: var(--space-2) var(--space-3);
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--ink);
  color: var(--bg);
  flex: none;
  transition: transform var(--dur-3) var(--ease-spring);
}
.brand-mark .icon { width: 22px; height: 22px; stroke-width: 1.5; }
/* Icono elegido en Ajustes › Icono (--app-icon lo pone head.php / app-icon.js) */
.app-icon, .app-icon-full {
  background: var(--app-icon) center / cover no-repeat;
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--ink) 12%, transparent), 0 1px 2px rgb(0 0 0 / .12);
}
.app-icon-full { background-image: var(--app-icon-full); }
.rail-brand:hover .brand-mark { transform: rotate(-8deg) scale(1.05); }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1;
}

.rail-nav, .rail-foot { display: grid; gap: 2px; }
.rail-foot { margin-top: auto; }
.rail-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: .8em;
  width: 100%;
  min-height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius);
  color: var(--ink-2);
  font-size: var(--fs-md);
  font-weight: 500;
  text-align: left;
  transition: background-color var(--dur-1), color var(--dur-1);
}
.rail-link:hover { background: var(--sunk); color: var(--ink); }
.rail-link.is-active { color: var(--ink); background: var(--surface); box-shadow: var(--shadow-1), inset 0 0 0 1px var(--line); }
.rail-link.is-active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--accent);
}
.rail-link.is-active .icon { color: var(--accent); }
.rail-cmd .kbd { margin-left: auto; font-size: .65rem; }

/* ---------- Escenario y vistas ---------- */
.stage {
  position: relative;
  min-width: 0;
  height: 100dvh;
  overflow: hidden;
  outline: none;
}
.view {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  padding: var(--space-7) var(--gutter) calc(var(--space-8) + var(--tabbar-h) + var(--safe-b));
  scroll-padding-top: var(--space-7);
}
.view.is-entering { animation: view-in var(--dur-3) var(--ease-out) both; }
@keyframes view-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.view > * { max-width: 1240px; margin-inline: auto; }

/* Entrada escalonada de listas */
.stagger > * { animation: rise var(--dur-3) var(--ease-out) both; animation-delay: calc(min(var(--i, 0), 14) * 28ms); }
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.view-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.view-head-text { display: grid; gap: var(--space-3); }
.view-head-actions { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; justify-content: flex-end; flex-shrink: 0; }
.home-top .view-head-actions { flex-wrap: nowrap; gap: 0; }

/* Pestañas de sección */
.tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .85em .9em;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--ink-3);
  white-space: nowrap;
  transition: color var(--dur-1);
}
.tab-link .icon { width: 1.1em; height: 1.1em; }
.tab-link:hover { color: var(--ink); }
.tab-link::after {
  content: "";
  position: absolute;
  left: .9em;
  right: .9em;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--dur-2) var(--ease-out);
}
.tab-link.is-active { color: var(--ink); }
.tab-link.is-active::after { transform: scaleX(1); }
.tab-link .count {
  font-style: normal;
  font-size: .7rem;
  font-weight: 700;
  min-width: 1.7em;
  padding: .1em .45em;
  border-radius: 99px;
  background: var(--sunk);
  color: var(--ink-3);
  text-align: center;
}
.tab-link .count:empty { display: none; }

/* ---------- Barra inferior (móvil) ---------- */
.tabbar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  height: calc(64px + var(--safe-b));
  padding: 0 var(--space-2) var(--safe-b);
  background: color-mix(in oklab, var(--surface) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(18px);
  -webkit-backdrop-filter: saturate(1.4) blur(18px);
  border-top: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease-out);
}
.tab {
  flex: 1;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 3px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink-3);
  transition: color var(--dur-1);
}
.tab .icon { width: 23px; height: 23px; transition: transform var(--dur-2) var(--ease-spring); }
.tab.is-active { color: var(--ink); }
.tab.is-active .icon { color: var(--accent); transform: translateY(-1px); }
.tab-main .icon {
  width: 46px;
  height: 34px;
  padding: 6px 12px;
  border-radius: 99px;
  background: var(--ink);
  color: var(--bg);
}
.tab-main.is-active .icon { background: var(--accent); color: var(--accent-ink); }

/* ---------- Pantalla de arranque ---------- */
.boot {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: grid;
  place-items: center;
  background: var(--bg);
  transition: opacity var(--dur-3) var(--ease-out), visibility var(--dur-3);
}
.boot-mark { color: var(--accent); animation: breathe 1.6s var(--ease-in-out) infinite; }
.boot-mark.app-icon { width: 56px; height: 56px; border-radius: 16px; }
.boot-mark .icon { width: 44px; height: 44px; stroke-width: 1.3; }
@keyframes breathe { 50% { opacity: .4; transform: scale(.94); } }
.is-ready .boot { opacity: 0; visibility: hidden; }

/* ---------- Responsive ---------- */
.only-compact { display: none !important; }

@media (max-width: 1180px) {
  :root { --rail-w: 76px; }
  .rail { padding-inline: var(--space-2); align-items: center; }
  .rail-brand { padding: var(--space-2) 0; }
  .brand-name, .rail-link span, .rail-cmd .kbd { display: none; }
  .rail-nav, .rail-foot { width: 100%; }
  .rail-link { justify-content: center; padding: 0; }
  .rail-link.is-active::before { left: -8px; }
  .rail-link .icon { width: 22px; height: 22px; }
}

@media (max-width: 760px) {
  :root { --tabbar-h: 64px; --gutter: 20px; }
  .app { grid-template-columns: 1fr; }
  .rail { display: none; }
  .tabbar { display: flex; }
  .only-compact { display: inline-grid !important; }
  .hide-compact { display: none !important; }
  .view { padding-top: var(--space-5); }
  .view-head { align-items: flex-start; margin-bottom: var(--space-5); }
  .view-head .view-lead { display: none; }
  .is-immersive .tabbar { transform: translateY(110%); }
}