:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #263143;
    --surface: #ffffff;
    --surface-subtle: #f0f3ff;
    --border: #e2e8f0;
    --border-inverse: rgba(255, 255, 255, 0.08);
    --text-primary: #1e293b;
    --text-secondary: #5b6b82;
    --text-muted: #64748b;
    --text-inverse: #ecf1ff;
    --text-inverse-muted: rgba(236, 241, 255, 0.65);
    --accent: #4f46e5;
    --accent-hover: #3525cd;
    --accent-soft: rgba(79, 70, 229, 0.1);
    --accent-secondary: #006591;
    --success: #15803d;
    --warning: #b45309;
    --error: #dc2626;
    --error-on-dark: #f87171;
    --font-inter: 'Inter', sans-serif;
    --transition-smooth: all 0.2s ease;
    --radius-sm: 0.5rem;
    --radius-lg: 1rem;
    --radius-pill: 1.5rem;
    --shadow-1: 0 1px 3px rgba(15, 23, 42, 0.1);
    --shadow-2: 0 10px 15px -3px rgba(15, 23, 42, 0.1);
    --focus-ring: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-inter);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Auth Layout */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding: 2rem;
}

.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-2);
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-logo {
    font-family: var(--font-inter);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: inline-block;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.form-control {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1.2rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-inter);
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

.btn-primary {
    width: 100%;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.95rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-inter);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:active {
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.25);
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-danger {
    background: rgba(220, 38, 38, 0.08);
    border-color: rgba(220, 38, 38, 0.25);
    color: #b91c1c;
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-inverse);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
}

.sidebar-brand {
    font-family: var(--font-inter);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-inverse);
    margin-bottom: 3rem;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-inverse-muted);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
    transition: var(--transition-smooth);
}

.menu-item a:hover,
.menu-item.active a {
    color: var(--text-inverse);
    background: rgba(255, 255, 255, 0.08);
}

.menu-item.active a {
    background: var(--accent-soft);
    border-left-color: var(--accent);
}

/* Grupo colapsable del sidebar (hoy solo "Administradores", ver
   templates/header.html y Core\Auth::buildAdminMenu()) — <details>
   nativo, sin JS. */
.menu-group summary {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-inverse-muted);
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    list-style: none;
    transition: var(--transition-smooth);
}

.menu-group summary::-webkit-details-marker {
    display: none;
}

.menu-group summary:hover {
    color: var(--text-inverse);
    background: rgba(255, 255, 255, 0.08);
}

.menu-group summary::after {
    content: 'expand_more';
    font-family: 'Material Symbols Outlined';
    font-size: 20px;
    margin-left: auto;
    transition: transform 0.2s ease;
}

.menu-group details[open] summary::after {
    transform: rotate(180deg);
}

.menu-group .submenu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.35rem 0 0.35rem 1rem;
}

.menu-group .submenu a {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.6rem 1rem;
    color: var(--text-inverse-muted);
    text-decoration: none;
    font-size: 0.88rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
}

.menu-group .submenu a:hover,
.menu-group .submenu li.active a {
    color: var(--text-inverse);
    background: rgba(255, 255, 255, 0.08);
}

.menu-group .submenu li.active a {
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    padding-left: calc(1rem - 3px);
}

.menu-group .submenu .material-symbols-outlined {
    font-size: 18px;
}

.sidebar-user {
    border-top: 1px solid var(--border-inverse);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-inverse);
}

.user-role {
    font-size: 0.8rem;
    color: var(--text-inverse-muted);
}

.logout-link {
    color: var(--text-inverse-muted);
    transition: var(--transition-smooth);
}

.logout-link:hover {
    color: var(--error-on-dark);
}

.main-content {
    flex: 1;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.page-title {
    font-family: var(--font-inter);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 2.75rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-1);
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-2);
}

.card-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.card-value {
    font-family: var(--font-inter);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Material symbols styles */
.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
}

/* Admin — Filter (public/js/pieces/filter.js), compartido por las 23
   páginas admin. label[data-icon] es el enganche opcional documentado
   en docs/admin-controls.md — antes sin ningún CSS asociado. La
   etiqueta viaja en su propio <span class="control-label"> (ver
   public/js/ui-control.js) para poder reposicionarla o esconderla acá
   sin tocar el control. */
#admin-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Campo de texto: caption arriba, caja con ícono líder abajo (Search
   Bars, docs/DESIGN.md). El ícono y el input comparten la misma celda
   de grilla — el ícono queda encima gracias a z-index — para que quede
   "dentro" del campo en vez de flotando afuera. */
#admin-filter label[data-icon="text"] {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 0.35rem;
}

#admin-filter label[data-icon="text"] .control-label {
    grid-row: 1;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

#admin-filter label[data-icon="text"]::before,
#admin-filter label[data-icon="text"] input[type="text"] {
    grid-row: 2;
    grid-column: 1;
}

#admin-filter label[data-icon="text"]::before {
    font-family: 'Material Symbols Outlined';
    content: 'search';
    font-size: 18px;
    color: var(--text-secondary);
    align-self: center;
    justify-self: start;
    margin-left: 0.65rem;
    z-index: 1;
    pointer-events: none;
}

#admin-filter label[data-icon="text"] input[type="text"] {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-inter);
    width: min(26rem, 100%);
    transition: var(--transition-smooth);
}

#admin-filter label[data-icon="text"] input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

/* Checkbox: sin caja de input, solo el control nativo + su etiqueta,
   en el orden convencional (checkbox primero). */
#admin-filter label[data-icon="checkbox"] {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

#admin-filter label[data-icon="checkbox"] input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Select (InputSelectControl, public/js/ui-controls/input-select.js):
   mismo caption-arriba-caja-abajo que label[data-icon="text"], sin el
   ícono líder (el propio <select> nativo ya trae su affordance de
   desplegable). */
#admin-filter label[data-icon="select"] {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 0.35rem;
}

#admin-filter label[data-icon="select"] .control-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

#admin-filter label[data-icon="select"] select {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-inter);
    min-width: 12rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

#admin-filter label[data-icon="select"] select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

/* Comparación numérica (InputNumberCompareControl,
   public/js/ui-controls/input-number-compare.js): mismo caption-arriba
   que text/select, y abajo una fila con el <select> de operador (>/</=)
   pegado al <input type="number">. Usado sólo en Filter (ej. "Descuento
   (%)" de ofertas, "Precio" de productos). */
#admin-filter label[data-icon="compare"] {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 0.35rem;
}

#admin-filter label[data-icon="compare"] .control-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

#admin-filter .input-number-compare {
    display: inline-flex;
    align-items: stretch;
}

#admin-filter .input-number-compare-op {
    border: 1px solid var(--border);
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    padding: 0.5rem 0.5rem;
    background: var(--surface-alt, var(--surface));
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-inter);
    cursor: pointer;
    transition: var(--transition-smooth);
}

#admin-filter .input-number-compare-value {
    border: 1px solid var(--border);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0.5rem 0.75rem;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-inter);
    width: 9rem;
    transition: var(--transition-smooth);
}

#admin-filter .input-number-compare-op:focus,
#admin-filter .input-number-compare-value:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
    position: relative;
    z-index: 1;
}

/* Admin — Paginator (public/js/pieces/paginator.js, compartido por
   las 23 páginas admin vía templates/generic-admin.html) */
.admin-paginator {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* En un teléfono, una debajo de otra: las tres no caben en una fila. */
@media (max-width: 640px) {
    .admin-paginator {
        grid-template-columns: 1fr;
        justify-items: center;
    }

    .admin-paginator > .admin-paginator-size-group,
    .admin-paginator > .admin-paginator-nav-group,
    .admin-paginator > .admin-paginator-total {
        grid-column: auto;
        justify-self: center;
    }
}

/* Columna 1: vacía en un descriptor sin pageSizeOptions (paginator.js) —
   el <div> igual ocupa la celda para que nav-group siga centrado. */
.admin-paginator-size-group {
    grid-column: 1;
}

.admin-paginator-size {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.admin-paginator-size select {
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
}

.admin-paginator-size select:hover {
    border-color: var(--accent);
}

.admin-paginator-size select:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.admin-paginator-nav-group {
    grid-column: 2;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-paginator-total {
    grid-column: 3;
    justify-self: end;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
}

.admin-paginator-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.admin-paginator-nav .material-symbols-outlined {
    font-size: 18px;
}

.admin-paginator-nav:hover:not(:disabled) {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

.admin-paginator-nav:disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

.admin-paginator-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
}

/* Admin — Status (setStatus() en public/js/ui-piece.js), compartido
   por las 23 páginas admin. Toast fijo arriba a la derecha, con el
   mismo lenguaje visual (superficie, radio, sombra) que los modales.
   Nunca se reparenta: mientras hay un <dialog> modal abierto (Ver,
   Editar, Crear, el de reveal-secret-modal.js), un <dialog> abierto con
   showModal() vive en el "top layer" del navegador, por encima de
   cualquier elemento normal sin importar su z-index, así que el toast
   queda tapado por el backdrop hasta que el modal se cierra — tradeoff
   aceptado en vez de reparentarlo (ver el comentario de setStatus()
   sobre por qué eso resultó más frágil). Se probó además promoverlo al
   top layer con popover="manual", pero Firefox (probado en 140) pinta
   cualquier popover debajo de un dialog modal aunque haya entrado
   después a la pila. */
#admin-status {
    /* Es un <dialog> (templates/generic-admin.html) pero nunca se abre
       con show()/showModal() — solo cambia textContent/className (ver
       setStatus() en public/js/ui-piece.js). Sin esto, la UA stylesheet
       aplica su default `dialog:not([open]) { display: none }` y el
       toast no se ve nunca. */
    display: block;
    position: fixed;
    inset: auto 1.5rem auto auto;
    top: 2rem;
    z-index: 1000;
    margin: 0;
    max-width: 22rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-2);
    color: var(--text-primary);
    font-size: 0.9rem;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#admin-status:empty {
    display: none;
}

/* Cierre automático (setStatus(), ~4s): fundido antes de vaciar el
   texto, para no cortar en seco el toast. */
#admin-status.admin-status-hide {
    opacity: 0;
    transform: translateY(-8px);
}

#admin-status.admin-status-success {
    border-color: rgba(22, 163, 74, 0.3);
    background: linear-gradient(rgba(22, 163, 74, 0.06), rgba(22, 163, 74, 0.06)), var(--surface);
    color: #15803d;
}

#admin-status.admin-status-error {
    border-color: rgba(220, 38, 38, 0.3);
    background: linear-gradient(rgba(220, 38, 38, 0.06), rgba(220, 38, 38, 0.06)), var(--surface);
    color: #b91c1c;
}

/* Problem Details styling */
.error-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding: 2rem;
}

.error-card {
    background: var(--surface);
    border: 1px solid rgba(220, 38, 38, 0.25);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 600px;
    box-shadow: var(--shadow-2);
    text-align: center;
}

.error-icon {
    font-size: 4rem;
    color: var(--error);
    margin-bottom: 1.5rem;
}

.error-title {
    font-family: var(--font-inter);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.error-detail {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.error-meta {
    background: var(--surface-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    text-align: left;
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn-secondary {
    display: inline-block;
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-inter);
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background: var(--surface-subtle);
    border-color: var(--accent);
}