/* =========================================================
   LOS ALAMOS · ESTRUCTURA: barra lateral, cabecera, página
   Archivo: frontend/assets/css/core/shell.css
   Solo páginas con sidebar (panel de usuario y admin). No se carga en login/registro.
========================================================= */

/* ---------- 04. BARRA LATERAL ---------- */
.la-side {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: var(--la-z-side);
    display: flex;
    flex-direction: column;
    width: var(--la-side-w);
    background: var(--la-bg-side);
    border-right: 1px solid var(--la-line);
}
.la-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--la-top-h);
    padding: 0 20px;
    border-bottom: 1px solid var(--la-line);
}
.la-nav {
    flex: 1;
    overflow-y: auto;
    padding: 20px 12px;
}
.la-nav-group + .la-nav-group {
    margin-top: 24px;
}
.la-nav-label {
    display: block;
    padding: 0 12px 8px;
    font-size: 12px;
    font-weight: 500;
    color: var(--la-dim);
}
.la-nav-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 42px;
    padding: 0 12px;
    border-radius: var(--la-r-ctl);
    color: var(--la-soft);
    font-size: 14px;
    font-weight: 500;
    transition: background var(--la-t), color var(--la-t);
}
.la-nav-item i {
    flex: none;
    width: 18px;
    text-align: center;
    font-size: 15px;
    color: var(--la-dim);
    transition: color var(--la-t);
}
.la-nav-item:hover {
    background: rgba(148, 163, 184, 0.08);
    color: var(--la-text);
}
.la-nav-item:hover i {
    color: var(--la-soft);
}
.la-nav-item[aria-current="page"] {
    background: var(--la-gold-bg);
    color: var(--la-text);
}
.la-nav-item[aria-current="page"] i {
    color: var(--la-gold-hi);
}
.la-nav-item[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: -12px;
    top: 10px;
    bottom: 10px;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: var(--la-gold);
}
.la-side-foot {
    padding: 12px;
    border-top: 1px solid var(--la-line);
}
.la-logout {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    min-height: 42px;
    padding: 0 12px;
    border-radius: var(--la-r-ctl);
    color: var(--la-soft);
    font-size: 14px;
    font-weight: 500;
    text-align: left;
    transition: background var(--la-t), color var(--la-t);
}
.la-logout i {
    width: 18px;
    text-align: center;
    color: var(--la-dim);
}
.la-logout:hover {
    background: var(--la-err-bg);
    color: var(--la-err);
}
.la-logout:hover i {
    color: var(--la-err);
}
.la-scrim {
    position: fixed;
    inset: 0;
    z-index: var(--la-z-scrim);
    background: rgba(4, 9, 15, 0.64);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--la-t);
}

/* ---------- 05. CABECERA ---------- */
.la-main {
    margin-left: var(--la-side-w);
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}
.la-top {
    position: sticky;
    top: 0;
    z-index: var(--la-z-top);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    height: var(--la-top-h);
    padding: 0 32px;
    background: var(--la-bg);
    border-bottom: 1px solid var(--la-line);
}
.la-top-left,
.la-top-right {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}
.la-top-title {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.la-icon-btn.la-menu-btn {
    display: none;
}
.la-icon-btn {
    position: relative;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: var(--la-r-ctl);
    color: var(--la-soft);
    transition: background var(--la-t), color var(--la-t);
}
.la-icon-btn:hover {
    background: rgba(148, 163, 184, 0.10);
    color: var(--la-text);
}
.la-user {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 0 10px 0 4px;
    border-radius: var(--la-r-ctl);
    transition: background var(--la-t);
}
.la-user:hover {
    background: rgba(148, 163, 184, 0.08);
}
.la-avatar {
    display: grid;
    place-items: center;
    flex: none;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: var(--la-surface-2);
    border: 1px solid var(--la-line-strong);
    color: var(--la-gold-hi);
    font-size: 13px;
    font-weight: 600;
    background-size: cover;
    background-position: center;
}
.la-user-info {
    display: grid;
    line-height: 1.25;
    min-width: 0;
}
.la-user-info strong {
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}
.la-user-info span {
    font-size: 12px;
    color: var(--la-dim);
}
.la-user-info span:empty {
    display: none;
}

/* ---------- 06. PÁGINA ---------- */
.la-page {
    flex: 1;
    width: 100%;
    max-width: var(--la-page-max);
    margin: 0 auto;
    padding: 32px;
    display: grid;
    gap: 24px;
    align-content: start;
}
.la-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.la-head h2 {
    font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.15;
    text-wrap: balance;
}
.la-head p {
    margin-top: 6px;
    color: var(--la-soft);
}
.la-updated {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--la-dim);
}
.la-updated time {
    font-family: var(--la-mono);
    font-variant-numeric: tabular-nums;
    color: var(--la-soft);
}
.la-foot {
    padding: 24px 32px 28px;
    border-top: 1px solid var(--la-line);
    font-size: 13px;
    color: var(--la-dim);
}