/* =====================================================================
   HOJA DE ESTILOS - VERSIÓN MODERNIZADA
   ---------------------------------------------------------------------
   IMPORTANTE: Se conservan EXACTAMENTE los mismos nombres de clase que
   la versión original para no requerir cambios en HTML/plantillas/PHP.
   Solo se modernizan los valores visuales.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

/* ---------- Paleta y tokens centralizados ---------- */
:root {
    /* Marca (derivada del azul original #5d96d9, refinado) */
    --brand:        #2f6fd0;
    --brand-dark:   #245aac;
    --brand-light:  #eaf1fc;
    --brand-hover:  #dbe8fb;

    /* Neutros (tema claro suavizado, sin blancos puros que encandilan) */
    --bg:           #e9edf3;
    --surface:      #fbfcfe;
    --surface-alt:  #eef1f6;
    --border:       #dbe1ea;
    --border-strong:#c3ccd8;

    /* Texto */
    --text:         #1e293b;
    --text-soft:    #475569;
    --text-mute:    #94a3b8;
    --on-brand:     #000000;

    /* Estados */
    --success:      #16a34a;
    --success-bg:   #dcfce7;
    --danger:       #dc2626;
    --danger-bg:    #fee2e2;
    --warning:      #d97706;
    --warning-bg:   #fef3c7;
    --warning-text: #92400e;
    --info:         #2563eb;
    --info-bg:      #dbeafe;

    /* Forma */
    --radius:       8px;
    --radius-sm:    6px;
    --radius-pill:  999px;

    /* Sombras */
    --shadow-sm:    0 1px 2px rgba(15, 23, 42, .06);
    --shadow:       0 4px 12px rgba(15, 23, 42, .08);
    --ring:         0 0 0 3px rgba(47, 111, 208, .18);

    --font: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: .18s ease;
}
/* Mapeo de variables del modal de atajos a las de este sistema (siscobicm) */
:root {
    --blk-card: var(--surface);
    --blk-card-2: var(--surface-alt);
    --blk-border: var(--border);
    --blk-text: var(--text);
    --blk-muted: var(--text-soft);
    --blk-accent: var(--brand);
}
/* ============================ TEMA OSCURO ============================
   Solo cambian los colores; toda la maquetación se mantiene.
   - Automático: si el SO está en oscuro y el usuario no forzó "claro".
   - Manual: el switch pone data-theme="dark" (o "light") en <html>.
   ==================================================================== */
:root[data-theme="dark"] { color-scheme: dark; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --brand:        #3b82f6;
        --brand-dark:   #2f6fd0;
        --brand-light:  #1e293b;
        --brand-hover:  #24324a;

        --bg:           #0f172a;
        --surface:      #1e293b;
        --surface-alt:  #172033;
        --border:       #334155;
        --border-strong:#475569;

        --text:         #e2e8f0;
        --text-soft:    #94a3b8;
        --text-mute:    #64748b;
        --on-brand:     #ffffff;

        --success:      #4ade80;
        --success-bg:   #14351f;
        --danger:       #f87171;
        --danger-bg:    #3b1418;
        --warning:      #fbbf24;
        --warning-bg:   #3a2a0a;
        --warning-text: #fcd34d;
        --info:         #60a5fa;
        --info-bg:      #14243f;

        --shadow-sm:    0 1px 2px rgba(0, 0, 0, .4);
        --shadow:       0 4px 12px rgba(0, 0, 0, .5);
        --ring:         0 0 0 3px rgba(59, 130, 246, .35);
    }
}

:root[data-theme="dark"] {
    --brand:        #3b82f6;
    --brand-dark:   #2f6fd0;
    --brand-light:  #1e293b;
    --brand-hover:  #24324a;

    --bg:           #0f172a;
    --surface:      #1e293b;
    --surface-alt:  #172033;
    --border:       #334155;
    --border-strong:#475569;

    --text:         #e2e8f0;
    --text-soft:    #94a3b8;
    --text-mute:    #64748b;
    --on-brand:     #ffffff;

    --success:      #4ade80;
    --success-bg:   #14351f;
    --danger:       #f87171;
    --danger-bg:    #3b1418;
    --warning:      #fbbf24;
    --warning-bg:   #3a2a0a;
    --warning-text: #fcd34d;
    --info:         #60a5fa;
    --info-bg:      #14243f;

    --shadow-sm:    0 1px 2px rgba(0, 0, 0, .4);
    --shadow:       0 4px 12px rgba(0, 0, 0, .5);
    --ring:         0 0 0 3px rgba(59, 130, 246, .35);
}

/* ---------- Generales ---------- */
body {
    font-family: var(--font);
    font-size: 13px;
    line-height: 1.5;
    color: var(--text);
    background-color: var(--bg);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1 {
    white-space: nowrap;
    text-align: center;
    color: var(--text);
    text-decoration: none;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -.02em;
    margin: 12px 0 4px;
}

h2 {
    white-space: nowrap;
    text-align: center;
    color: var(--text-soft);
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    margin: 0 0 16px;
}

/* Usado por "Acción: Crear/Modificar" y mensajes tipo subtítulo */
h3 {
    text-align: center;
    color: var(--text-soft);
    font-size: 14px;
    font-weight: 600;
    margin: 4px 0 14px;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--brand-dark); text-decoration: underline; }

.spancolor { color: var(--warning); font-weight: 600; }

/* ---------- Utilidades de visibilidad (funcionales, no tocar comportamiento) ---------- */
.oculto {
    display: none;
    visibility: hidden;
}
.mostrar {
    display: inline;
    visibility: visible;
}

/* ---------- Menú ---------- */
.menu {
    background-color: var(--brand);
    font-weight: 600;
    color: var(--on-brand);
    text-decoration: none;
    font-size: 13px;
    cursor: pointer;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition);
}
.menu:hover { background-color: var(--brand-dark); }

.finmenu {
    background-color: var(--brand);
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
}

.submenu {
    font-size: 13px;
    line-height: 1.9;
    color: var(--text);
    background-color: var(--surface);
    cursor: pointer;
    text-decoration: none;
    padding: 6px 12px;
    transition: background-color var(--transition), color var(--transition);
}
.submenuover {
    font-size: 13px;
    line-height: 1.9;
    color: var(--brand-dark);
    background-color: var(--brand-light);
    cursor: pointer;
    text-decoration: none;
    padding: 6px 12px;
}

/* ---------- Tablas ---------- */
.tabla {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    vertical-align: middle;
    /* Sin width forzado: el ancho lo define el HTML (igual que el CSS original).
       Las tablas de listado que necesiten ancho completo lo toman de su
       atributo width="100%" en el <table>. Las fichas de formulario quedan
       compactas y centradas. */
}

.tablatit {
    background-color: var(--brand);
    color: var(--on-brand);
    font-weight: 600;
    padding: 12px 14px;
    font-size: 15px;
    border: none;
}

.tr {
    background-color: var(--surface);
    border: none;
    transition: background-color var(--transition);
}
.tr:hover { background-color: var(--surface-alt); }

.th {
    background-color: var(--surface-alt);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 10px 12px;
    text-align: left;
    border: none;
    border-bottom: 2px solid var(--border-strong);
}

/* Celdas base */
.td, .tdn, .tdc, .tdr, .td1 {
    font-size: 13px;
    padding: 10px 12px;
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}
.td   { text-align: left; }
.tdn  { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tdc  { text-align: center; }
.tdr  { text-align: right; font-variant-numeric: tabular-nums; }
.td1  { background: var(--surface-alt); text-align: left; }

/* Título de fila (label) y dato en formularios tipo ficha */
.tdtit {
    background-color: var(--surface-alt);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    padding: 10px 12px;
    text-align: right;
    border: none;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.tddat {
    font-size: 13px;
    color: var(--text);
    font-weight: 600;
    text-align: left;
    padding: 10px 12px;
    border: none;
    border-bottom: 1px solid var(--border);
}

/* ---------- Paginación ---------- */
.paglnk {
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    font-family: var(--font);
    color: var(--brand);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    display: inline-block;
    transition: background-color var(--transition), color var(--transition);
}
.paglnk:hover { background-color: var(--brand-light); color: var(--brand-dark); }

.spanpag {
    background-color: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font);
    font-weight: 400;
    padding: 6px 12px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.pag {
    font-size: 13px;
    font-family: var(--font);
    color: var(--text-soft);
}

/* ---------- Formularios ---------- */
.chk {
    color: var(--text-soft);
    font-size: 13px;
    border: 0;
    padding: 2px;
}

/* Inputs de texto: se conservan los ANCHOS originales para no romper layouts.
   Se moderniza alto, borde, radio y foco. */
.input, .inputs, .inputm, .inputd, .inputw, .inputvw {
    font-family: var(--font);
    font-weight: 500;
    color: var(--text);
    font-size: 13px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 0 10px;
    height: 34px;
    background-color: var(--surface);
    transition: border-color var(--transition), box-shadow var(--transition);
    box-sizing: border-box;
}
.input   { width: 160px; }
.inputs  { width: 60px;  text-align: center; }
.inputm  { width: 70px;  }
.inputd  { width: 100px; }
.inputw  { width: 260px; }
.inputvw { width: 520px; }

.input:focus, .inputs:focus, .inputm:focus, .inputd:focus,
.inputw:focus, .inputvw:focus,
.inputxt:focus, .inputxtw:focus, .sele:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: var(--ring);
}

.input::placeholder,
.inputw::placeholder,
.inputvw::placeholder,
.inputxt::placeholder { color: var(--text-mute); font-weight: 400; }

.inputchk {
    font-weight: 500;
    color: var(--text-soft);
    font-size: 13px;
    padding: 2px;
    text-align: center;
}

/* Solo lectura */
.inputro {
    color: var(--text);
    font-size: 13px;
    border: 0;
    padding: 8px 10px;
    height: auto;
    min-height: 34px;
    background-color: var(--surface-alt);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    box-sizing: border-box;
}

/* Áreas de texto */
.inputxt, .inputxtw {
    font-family: var(--font);
    font-weight: 500;
    color: var(--text);
    font-size: 13px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    background-color: var(--surface);
    transition: border-color var(--transition), box-shadow var(--transition);
    box-sizing: border-box;
    resize: vertical;
    line-height: 1.5;
}
.inputxt  { width: 260px; height: 90px;  }
.inputxtw { width: 520px; height: 120px; }

/* Botón moderno */
.button {
    border: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--on-brand);
    font-family: var(--font);
    background-color: var(--brand);
    background-image: linear-gradient(180deg, var(--brand), var(--brand-dark));
    cursor: pointer;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}
.button:hover  { filter: brightness(1.06); box-shadow: var(--shadow); }
.button:active { transform: translateY(1px); box-shadow: var(--shadow-sm); }
.button:focus-visible { outline: none; box-shadow: var(--ring); }

/* Select */
.sele {
    font-family: var(--font);
    font-weight: 500;
    color: var(--text);
    font-size: 13px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background-color: var(--surface);
    padding: 0 10px;
    height: 34px;
    transition: border-color var(--transition), box-shadow var(--transition);
    box-sizing: border-box;
    cursor: pointer;
}

/* Radios / checkboxes: alineados y con color de marca */
.radio {
    font-family: var(--font);
    font-weight: 500;
    color: var(--text-soft);
    font-size: 13px;
    padding: 4px 2px;
    height: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
input[type="checkbox"], input[type="radio"] { accent-color: var(--brand); cursor: pointer; }

/* Imágenes de acción */
.imgacc {
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: opacity var(--transition), transform var(--transition);
}
.imgacc:hover { opacity: .8; transform: scale(1.08); }

/* ---------- Mensajes ---------- */
.error {
    font-weight: 600;
    color: var(--danger);
    font-size: 13px;
    background-color: var(--danger-bg);
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    padding: 10px 14px;
    display: inline-block;
}
.msg {
    font-weight: 600;
    color: var(--success);
    font-size: 13px;
    background-color: var(--success-bg);
    border: 1px solid var(--success);
    border-radius: var(--radius);
    padding: 10px 14px;
    display: inline-block;
}

/* ---------- Facturas ---------- */
.facdesitem {
    font-size: 13px;
    font-family: var(--font);
    font-weight: 400;
    color: var(--text-soft);
}

/* ---------- Help (tooltip / caja de ayuda) ---------- */
.help {
    border: none;
    background-color: var(--warning-bg);
    color: var(--warning-text);
    font-size: 13px;
    text-align: left;
    padding: 10px 14px;
    font-weight: 400;
    border-radius: var(--radius);
    border-left: 4px solid var(--warning);
    box-shadow: var(--shadow-sm);
}

/* ---------- Estados textuales ---------- */
.activo    { color: var(--text); font-weight: 600; }
.notActivo { color: var(--text-mute); }

.pagado, .notPagado {
    font-weight: 600;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    display: inline-block;
    line-height: 1.6;
}
.pagado    { color: var(--success); background-color: var(--success-bg); }
.notPagado { color: var(--danger);  background-color: var(--danger-bg); }

/* ---------- Badges de fila (row2style_*) como píldoras modernas ---------- */
.row2style_red,
.row2style_green,
.row2style_blue,
.row2style_yellow,
.row2style_zzz {
    border: none;
    color: #ffffff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    display: inline-block;
    line-height: 1.6;
    letter-spacing: .01em;
    box-shadow: var(--shadow-sm);
}
.row2style_red    { background-color: var(--danger);  }
.row2style_green  { background-color: var(--success); }
.row2style_blue   { background-color: var(--info);    }
.row2style_yellow { background-color: #0891b2;        } /* teal (mismo tono que el original #008888) */
.row2style_zzz    { background-color: var(--warning); }

/* =========================================================
   FICHA DE EDICIÓN — formulario principal (edit_reg / show_reg)
   Ámbito: SOLO tablas dentro de <form>, para no afectar los
   listados (shw_alumnos va fuera del <form>).
   ========================================================= */
form table.tabla {
    margin: 20px auto;          /* centrada en su contenedor */
    max-width: 600px;           /* no se estira: ancho de ficha */
    width: 100%;
    box-sizing: border-box;
    padding: 6px;               /* aire interior de la tarjeta */
}

/* Etiquetas (columna izquierda) */
form table.tabla th.tdtit,
form table.tabla td.tdtit {
    background: transparent;
    color: var(--text-soft);
    font-weight: 500;
    text-align: right;
    white-space: nowrap;
    width: 38%;
    padding: 10px 14px;
    border: none;
    border-bottom: 1px solid var(--border);
}

/* Campos (columna derecha) */
form table.tabla td.tddat {
    text-align: left;
    color: var(--text);
    font-weight: 400;
    padding: 10px 14px;
    border: none;
    border-bottom: 1px solid var(--border);
}

/* Última fila sin línea divisoria */
form table.tabla tbody tr:last-child th.tdtit,
form table.tabla tbody tr:last-child td.tddat {
    border-bottom: none;
}

/* En formularios no queremos el resaltado de fila al pasar el mouse */
form table.tabla tr.tr:hover { background: transparent; }

/* =====================================================================
   PASO 1 — ESQUELETO DE LAYOUT CON SIDEBAR (estilo AdminLTE)
   ---------------------------------------------------------------------
   Clases NUEVAS con prefijo .app-*. Todavía nada las usa, así que no
   afectan la vista actual. Se conectarán en los pasos 2-4.
   Colores tomados de las variables del tema -> siguen claro/oscuro.

   Markup objetivo (se generará en general.ajax.php / Paso 2):
     <aside class="app-sidebar">
       <div class="app-sidebar-brand"> ...logo... </div>
       <nav class="app-nav">
         <ul>
           <li class="app-nav-item">
             <a class="app-nav-link" onclick="appToggleNav(N)">
               <span class="app-ico"></span>
               <span class="app-nav-text">Alumnos</span>
               <span class="app-caret"></span>
             </a>
             <ul class="app-submenu" id="idSubmenuN">
               <li><a class="app-subitem" onclick='subm("...")'>Opción</a></li>
             </ul>
           </li>
         </ul>
       </nav>
     </aside>
     <div class="app-main"> ...contenido... </div>
   ===================================================================== */

:root {
    --sidebar-w:           250px;
    --sidebar-w-collapsed: 60px;
    --sidebar-bg:          var(--surface-alt);
    --sidebar-border:      var(--border);
    --sidebar-text:        var(--text-soft);
    --sidebar-text-strong: var(--text);
    --sidebar-active-bg:   var(--brand);
    --sidebar-active-text: var(--on-brand);
    --sidebar-hover-bg:    var(--brand-light);
}

/* ---- Barra lateral ---- */
.app-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w);
    background-color: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    z-index: 1000;
    transition: width var(--transition);
}
/* Scrollbar fino */
.app-sidebar::-webkit-scrollbar { width: 6px; }
.app-sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* Cabecera / logo del sidebar (integrada) */
.app-sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    padding: 14px 16px;
    margin: 0;
    border-bottom: 1px solid var(--border);
}
.app-sidebar-brand img {
    max-width: 100%;
    max-height: 88px;
    height: auto;
    object-fit: contain;
    border-radius: 6px;
    opacity: .95;
}

/* ---- Navegación (minimal) ---- */
.app-nav { padding: 10px 10px 16px; }
.app-nav ul { list-style: none; margin: 0; padding: 0; }
.app-nav-item { margin: 1px 0; }

.app-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 12px;
    color: var(--text-soft);
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: .01em;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition), color var(--transition);
}
.app-nav-link:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    text-decoration: none;
}

/* Ítem activo / abierto: sutil, sin bloques pesados */
.app-nav-item.active > .app-nav-link,
.app-nav-item.open   > .app-nav-link {
    color: var(--brand);
    font-weight: 600;
    background-color: transparent;
}
.app-nav-item.active > .app-nav-link { background-color: var(--brand-light); }

/* Ícono: sutil, hereda color del ítem */
.app-ico {
    flex: 0 0 22px;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-mute);
    font-size: 18px;
    transition: color var(--transition);
}
.app-nav-link:hover .app-ico,
.app-nav-item.active > .app-nav-link .app-ico,
.app-nav-item.open > .app-nav-link .app-ico { color: var(--brand); }
.app-ico svg, .app-ico img { width: 18px; height: 18px; }

.app-nav-text { flex: 1 1 auto; }

/* Flecha del desplegable (fina) */
.app-caret {
    flex: 0 0 auto;
    width: 0; height: 0;
    border-left: 4px solid currentColor;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    opacity: .4;
    transition: transform var(--transition), opacity var(--transition);
}
.app-nav-link:hover .app-caret { opacity: .7; }
.app-nav-item.open > .app-nav-link .app-caret { transform: rotate(90deg); opacity: .7; }

/* ---- Submenú (acordeón) ---- */
.app-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
    margin: 2px 0 2px 0;
}
.app-nav-item.open > .app-submenu { max-height: 700px; }

.app-subitem {
    display: block;
    padding: 8px 12px 8px 46px;    /* sangría alineada con el texto */
    color: var(--text-mute);
    font-size: 13px;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    border-radius: var(--radius-sm);
    position: relative;
    transition: background-color var(--transition), color var(--transition);
}
/* Guía vertical fina de los subítems */
.app-subitem::before {
    content: "";
    position: absolute;
    left: 26px; top: 0; bottom: 0;
    width: 1px;
    background: var(--border);
}
.app-subitem:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    text-decoration: none;
}

/* ---- Área de contenido (corrida a la derecha) ---- */
.app-main {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    transition: margin-left var(--transition);
}

/* ---- Botón para colapsar/expandir ---- */
.app-sidebar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-soft);
    cursor: pointer;
    transition: background-color var(--transition);
}
.app-sidebar-toggle:hover { background-color: var(--surface-alt); }

/* =====================  ESTADO COLAPSADO (~60px, solo íconos)  =====================
   Se activa agregando la clase .sidebar-collapsed al <body>. */
body.sidebar-collapsed .app-sidebar { width: var(--sidebar-w-collapsed); }
body.sidebar-collapsed .app-main    { margin-left: var(--sidebar-w-collapsed); }

/* En colapsado: ocultar textos y flechas, dejar solo el ícono centrado */
body.sidebar-collapsed .app-nav-text,
body.sidebar-collapsed .app-caret,
body.sidebar-collapsed .app-sidebar-brand .app-brand-text { display: none; }

body.sidebar-collapsed .app-nav-link { justify-content: center; gap: 0; padding: 12px 0; }

/* En colapsado, los submenús no empujan: aparecen como "flotante" al pasar el mouse */
body.sidebar-collapsed .app-submenu { max-height: 0; }
body.sidebar-collapsed .app-nav-item:hover > .app-submenu {
    position: absolute;
    left: var(--sidebar-w-collapsed);
    top: auto;
    min-width: 200px;
    max-height: none;
    border: 1px solid var(--sidebar-border);
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: var(--shadow);
    z-index: 1100;
}
body.sidebar-collapsed .app-subitem { padding-left: 16px; }

/* Responsive: en pantallas chicas el sidebar se esconde por defecto */
@media (max-width: 768px) {
    .app-sidebar { width: var(--sidebar-w-collapsed); }
    .app-main    { margin-left: var(--sidebar-w-collapsed); }
}

/* =====================================================================
   PASO 5 — FIX SCROLL HORIZONTAL + TOPBAR DE USUARIO
   ===================================================================== */

/* ---- Evitar desborde horizontal general ---- */
html, body { max-width: 100%; overflow-x: hidden; }

.app-main {
    /* además del margin-left del sidebar, acotar el ancho para que
       ningún contenido ancho (listados) genere scroll de toda la página.
       El scroll, si hace falta, queda DENTRO del contenido. */
    max-width: calc(100vw - var(--sidebar-w));
    overflow-x: auto;
    box-sizing: border-box;
    padding: 0 16px 24px;
}
body.sidebar-collapsed .app-main {
    max-width: calc(100vw - var(--sidebar-w-collapsed));
}
@media (max-width: 768px) {
    .app-main { max-width: calc(100vw - var(--sidebar-w-collapsed)); }
}

/* ---- Topbar (barra superior de usuario) ---- */
.app-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 52px;
    padding: 0 16px;
    margin: 0 -16px 12px;              /* pega la barra a los bordes de .app-main */
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 900;
}

.app-topbar-spacer { flex: 1 1 auto; }  /* empuja lo demás a la derecha */

.app-topbar-user {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-soft);
    padding-right: 8px;
    border-right: 1px solid var(--border);
    margin-right: 4px;
}
.app-topbar-user .ti { color: var(--brand); font-size: 18px; }

/* Botón redondo de ícono (campana, etc.) */
.app-iconbtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border: none;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--text-soft);
    cursor: pointer;
    font-size: 18px;
    position: relative;
    transition: background-color var(--transition), color var(--transition);
}
.app-iconbtn:hover { background-color: var(--surface-alt); color: var(--text); }

/* Puntito de notificación (por ahora sin uso, oculto) */
.app-iconbtn .app-badge {
    position: absolute;
    top: 7px; right: 8px;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--danger);
    display: none;                     /* se muestra poniendo .has-badge */
}
.app-iconbtn.has-badge .app-badge { display: block; }

/* Botones de acción del topbar (Cambiar clave, Cerrar sesión) */
.app-topbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}
.app-topbar-btn:hover {
    background: var(--surface-alt);
    color: var(--text);
    text-decoration: none;
}
.app-topbar-btn.danger {
    border-color: var(--danger);
    color: var(--danger);
}
.app-topbar-btn.danger:hover {
    background: var(--danger);
    color: #fff;
}
.app-topbar-btn .ti { font-size: 16px; }

/* =====================================================================
   PASO 6 — MENÚ DE USUARIO DESPLEGABLE + SWITCH DE TEMA
   ===================================================================== */

/* Mostrar el ícono de tema correcto según el tema activo */
.app-theme-ico-dark  { display: none; }
.app-theme-ico-light { display: inline; }
:root[data-theme="dark"] .app-theme-ico-dark  { display: inline; }
:root[data-theme="dark"] .app-theme-ico-light { display: none; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .app-theme-ico-dark  { display: inline; }
    :root:not([data-theme="light"]) .app-theme-ico-light { display: none; }
}

/* ---- Menú de usuario ---- */
.app-usermenu { position: relative; }

.app-usermenu-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 38px;
    padding: 0 10px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition);
}
.app-usermenu-btn:hover { background: var(--surface-alt); }
.app-usermenu-btn .ti-user-circle { color: var(--brand); font-size: 20px; }
.app-usermenu-caret { font-size: 14px; transition: transform var(--transition); }
.app-usermenu.open .app-usermenu-caret { transform: rotate(180deg); }

/* Dropdown */
.app-usermenu-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 180px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 6px;
    display: none;
    z-index: 1200;
}
.app-usermenu.open .app-usermenu-dropdown { display: block; }

.app-usermenu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
}
.app-usermenu-item:hover { background: var(--surface-alt); text-decoration: none; }
.app-usermenu-item .ti { font-size: 16px; color: var(--text-soft); }
.app-usermenu-item.danger { color: var(--danger); }
.app-usermenu-item.danger .ti { color: var(--danger); }
.app-usermenu-item.danger:hover { background: var(--danger); color: #fff; }
.app-usermenu-item.danger:hover .ti { color: #fff; }

/* =====================================================================
   PASO 7 — FICHA EN SECCIONES + COLUMNAS
   Se activa cuando show_reg recibe un __layout (opt-in). El markup:
     <div class="app-form">
       <fieldset class="app-form-section">
         <legend class="app-form-legend"><i class="ti ..."></i> Título</legend>
         <div class="app-form-grid">
           <div class="app-field">
             <label class="app-field-label">Nombre</label>
             <div class="app-field-input"> ...control... </div>
           </div>
           ...
         </div>
       </fieldset>
     </div>
   ===================================================================== */
.app-form {
    max-width: 1080px;
    margin: 8px auto 0;
    text-align: left;            /* reset del <center> heredado */
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.app-form-section {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    padding: 6px 18px 18px;
    margin: 0;
}
.app-form-legend {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--brand);
    padding: 0 8px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.app-form-legend .ti { font-size: 16px; }

.app-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px 18px;
}
.app-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.app-field-full { grid-column: 1 / -1; }
.app-field-label {
	display: inline-block;
    font-size: 11px;
	font-weight: bolder;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-soft);
}
.app-field-input { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* Los controles llenan su columna (comparten fila con íconos/botones si los hay) */
.app-form .app-field-input > .input,
.app-form .app-field-input > .inputw,
.app-form .app-field-input > .inputvw,
.app-form .app-field-input > .inputd,
.app-form .app-field-input > .inputm,
.app-form .app-field-input > .inputs,
.app-form .app-field-input > .sele,
.app-form .app-field-input > .inputro {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
}
.app-form .app-field-input > .inputxt,
.app-form .app-field-input > .inputxtw {
    flex: 1 1 100%;
    width: auto;
    min-height: 90px;
}

/* Checkboxes de "parámetros" en línea */
.app-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text);
    margin-right: 16px;
    white-space: nowrap;
    cursor: pointer;
}

/* =====================================================================
   PASO 8 — LISTADOS + PAGINADO (aplica a TODOS los listados)
   show_array() genera: <table class='tabla'> con
     <tbody id='tbheader'>  (encabezado, filas con <th class='th'>)
     <tbody id='tbbody'>    (datos)
     <tbody id='tbfooter'>  (totales/pie)
   El paginado lo arma puntero_paginas() con clases .spanpag/.paglnk/.pag
   ===================================================================== */

/* ---- Zebra: filas alternadas en el cuerpo ---- */
#tbbody tr:nth-child(even) > td,
#tbbody tr:nth-child(even) > .td,
#tbbody tr:nth-child(even) > .tdn,
#tbbody tr:nth-child(even) > .tdc,
#tbbody tr:nth-child(even) > .tdr {
    background-color: var(--surface-alt);
}
/* Hover de fila (más marcado que el zebra) */
#tbbody tr:hover > td,
#tbbody tr:hover > .td,
#tbbody tr:hover > .tdn,
#tbbody tr:hover > .tdc,
#tbbody tr:hover > .tdr {
    background-color: var(--brand-light);
}

/* ---- Header sticky (queda fijo al scrollear la página) ---- */
#tbheader th,
#tbheader .th {
    position: sticky;
    top: 0;
    z-index: 5;
    /* fondo sólido para que las filas no se transparenten por detrás */
    background-color: var(--surface-alt);
}
/* Si hay topbar sticky de 52px, el header de tabla se pega debajo */
.app-main #tbheader th,
.app-main #tbheader .th { 
	top: 5px;
	text-align: center;
}

/* ---- Celda de Acción: íconos alineados ---- */
#tbbody td img,
#tbbody .td img {
    vertical-align: middle;
    cursor: pointer;
    border-radius: 4px;
    transition: transform var(--transition), opacity var(--transition);
}
#tbbody td img:hover,
#tbbody .td img:hover { transform: scale(1.15); opacity: .85; }

/* ---- Pie de totales ---- */
#tbfooter td,
#tbfooter .td {
    font-weight: 700;
    background-color: var(--surface-alt);
    border-top: 2px solid var(--border-strong);
}

/* =====================  PAGINADO estilo botones  ===================== */
.spanpag {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    background: transparent;
    border: none;
    padding: 8px 0;
}

/* Cada número/enlace de página como botón */
.paglnk, .pag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-soft);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}
.paglnk:hover {
    background: var(--brand-light);
    border-color: var(--brand);
    color: var(--brand-dark);
}
/* Página actual (.pag = no es link) resaltada en color marca */
.pag {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--on-brand);
    cursor: default;
}

/* =====================================================================
   PASO 8 — LISTADOS: zebra + header sticky
   Aplica a TODOS los listados que arma show_array() (usa .tabla/.th/.td/.tr).
   Anclas confirmadas: <tbody id='tbheader'> (cabecera), cuerpo por show_tbody().
   ===================================================================== */

/* Zebra: filas alternadas del cuerpo del listado.
   Se apunta al tbody del cuerpo; el header (#tbheader) y el pie (#tbfooter)
   quedan excluidos. */
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:nth-child(even) > .td,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:nth-child(even) > .tdn,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:nth-child(even) > .tdc,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:nth-child(even) > .tdr {
    background-color: var(--surface-alt);
}

/* Hover de fila más marcado (sobre la zebra) */
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:hover > .td,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:hover > .tdn,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:hover > .tdc,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr:hover > .tdr {
    background-color: var(--brand-light);
}

/* Header sticky: el <tbody id='tbheader'> queda fijo al hacer scroll vertical */
.tabla #tbheader th.th,
.tabla #tbheader .th {
    position: sticky;
    top: 0;
    z-index: 5;
    background-color: var(--surface-alt);
}

/* Celda de "Acción": íconos alineados y con buen espaciado */
.tabla .td img,
.tabla .tdc img {
    vertical-align: middle;
    cursor: pointer;
    border-radius: 4px;
    transition: opacity var(--transition), transform var(--transition);
}
.tabla .td img:hover,
.tabla .tdc img:hover { opacity: .75; transform: scale(1.1); }

/* =====================================================================
   PASO 8b — PAGINADO COMPACTO (lo arma toolbar.js -> .app-pager)
   ===================================================================== */
.app-pager {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 12px 4px;
    margin: 8px 0;
}
.app-pager-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.app-pager-btn:hover:not(.is-current):not(.is-disabled) {
    background: var(--brand-light);
    border-color: var(--brand);
    color: var(--brand-dark);
    transform: translateY(-1px);
}
.app-pager-btn.is-current {
    background-image: linear-gradient(180deg, var(--brand), var(--brand-dark));
    border-color: var(--brand);
    color: var(--on-brand);
    cursor: default;
    box-shadow: var(--shadow-sm);
}
.app-pager-btn.is-disabled {
    opacity: .45;
    cursor: default;
    pointer-events: none;
}
.app-pager-btn .ti { font-size: 16px; }
.app-pager-gap {
    padding: 0 4px;
    color: var(--text-mute);
    font-weight: 600;
    user-select: none;
}
.app-pager-info {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-soft);
    font-weight: 500;
    white-space: nowrap;
}

/* Ocultar del todo el paginado viejo ya procesado (por las dudas) */
span.spanpag[data-pager="done"] { display: none !important; }

@media (max-width: 600px) {
    .app-pager-info { margin-left: 0; width: 100%; text-align: center; margin-top: 6px; }
}

/* =====================================================================
   PASO 9 — TOOLBAR DE FILTRO (alumnos.php y similares)
   ===================================================================== */
.app-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin: 8px 0 16px;
}

/* Búsqueda con ícono */
.app-toolbar-search {
    position: relative;
    flex: 1 1 280px;
    min-width: 220px;
}
.app-toolbar-search > .ti {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-mute);
    font-size: 16px;
    pointer-events: none;
}
.app-toolbar-search .input {
    width: 100%;
    height: 38px;
    padding: 0 12px 0 36px;
    box-sizing: border-box;
}

.app-toolbar-label {
    font-size: 13px;
    color: var(--text-soft);
    font-weight: 500;
    white-space: nowrap;
}

/* Segmented control (Sí / No / Ambos) sobre radios reales */
.app-segmented {
    display: inline-flex;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}
.app-seg {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-soft);
    border-radius: 5px;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--transition), color var(--transition);
}
.app-seg:hover { color: var(--text); }
.app-seg.is-active {
    background: var(--brand);
    color: var(--on-brand);
    box-shadow: var(--shadow-sm);
}
/* el radio real queda oculto pero funcional */
.app-seg input { position: absolute; opacity: 0; width: 0; height: 0; margin: 0; }

/* Botones de la toolbar */
.app-toolbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 16px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.app-toolbar-btn:hover { background: var(--surface-alt); color: var(--text); transform: translateY(-1px); }
.app-toolbar-btn .ti { font-size: 16px; }

.app-toolbar-btn.is-primary {
    border: none;
    background-image: linear-gradient(180deg, var(--success), #15803d);
    color: #fff;
}
.app-toolbar-btn.is-primary:hover { filter: brightness(1.06); }

@media (max-width: 768px) {
    .app-toolbar-search { flex: 1 1 100%; }
    .app-segmented, .app-toolbar-btn { flex: 1 1 auto; justify-content: center; }
}

/* =====================================================================
   PASO 10 — ÍCONOS DE ACCIÓN en listados (separados y prolijos)
   Los <img> de la columna Acción vienen pegados con &nbsp; desde el PHP.
   Acá se les da tamaño parejo, aire, fondo tipo botón y hover. Solo CSS.
   ===================================================================== */

/* La celda de acción no debe cortar los íconos en varias líneas */
.tabla #tbbody td:last-child,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr > td:last-child {
    white-space: nowrap;
    text-align: center;
    line-height: 1;
}

/* Cada ícono como "botón" chico, con separación uniforme */
.tabla #tbbody td img,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr > td img {
    width: 26px;
    height: 26px;
    padding: 4px;
    margin: 0 3px;
    box-sizing: border-box;
    object-fit: contain;
    vertical-align: middle;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}
.tabla #tbbody td img:hover,
.tabla tbody:not(#tbheader):not(#tbfooter) > tr > td img:hover {
    background: var(--brand-light);
    border-color: var(--brand);
    transform: translateY(-1px);
}

/* En tema oscuro, los .gif/.png viejos se ven algo apagados: los levanto un toque */
:root[data-theme="dark"] .tabla #tbbody td img,
:root[data-theme="dark"] .tabla tbody:not(#tbheader):not(#tbfooter) > tr > td img {
    filter: brightness(1.12);
}

/* =====================================================================
   PASO 11 — TARJETA CONTENEDORA DEL LISTADO (paginado + tabla juntos)
   Envuelve shw_alumnos() como hace clientes con .blk-clientes-tabla.
   ===================================================================== */
.app-listado {
    max-width: 1200px;
    margin: 8px auto 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 8px 16px 16px;
    text-align: left;              /* reset del <center> heredado */
    overflow-x: auto;              /* si la tabla es muy ancha, scroll interno */
}

/* La tabla adentro ocupa todo el ancho de la tarjeta */
.app-listado table.tabla {
    width: 100%;
    border: none;
    box-shadow: none;
    background: transparent;
    margin: 0;
}

/* El paginado compacto va alineado a la izquierda dentro de la tarjeta */
.app-listado .app-pager { padding: 8px 0 14px; margin: 0; }

/* Paginado SOLO ARRIBA: ocultar el segundo (el de abajo) */
.app-listado .app-pager ~ .app-pager,
.app-listado table.tabla ~ .app-pager {
    display: none !important;
}

/* =====================================================================
   PASO 12 — Campo en línea dentro de toolbars (label + input + ícono)
   ===================================================================== */
.app-field-inline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}
.app-field-inline .app-toolbar-label { margin: 0; }
.app-field-inline img { cursor: pointer; vertical-align: middle; }

/* =====================================================================
   PASO 12b — Variante de tarjeta que se AJUSTA AL CONTENIDO (reportes chicos)
   Para tablas resumen que no deben estirarse a todo el ancho.
   ===================================================================== */
.app-listado.app-listado-fit {
    max-width: max-content;
    margin: 8px auto 24px;      /* centrada dentro del <center> */
}
.app-listado.app-listado-fit table.tabla {
    width: auto;                /* la tabla toma su ancho natural */
    min-width: 320px;
}

/* =====================================================================
   PASO 13 — TABLA MANUAL DE ALUMNOS (.app-table) + acciones + paginado
   Tabla armada a mano en alumnos.php con datos de get_alumnos_data().
   ===================================================================== */

/* Paginado arriba a la derecha, dentro de la tarjeta */
.app-listado-top {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 4px 0 10px;
}
.app-listado-top .app-pager { padding: 0; margin: 0; }

/* Tabla */
.app-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13px;
    color: var(--text);
}
.app-table thead th {
    position: sticky;
    top: 0;
    z-index: 3;
    background: var(--surface);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    text-align: left;
    padding: 11px 12px;
    border-bottom: 2px solid var(--border-strong);
    white-space: nowrap;
}
.app-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    white-space: nowrap;
}
/* Zebra + hover */
.app-table tbody tr:nth-child(even) td { background: var(--surface-alt); }
.app-table tbody tr:hover td { background: var(--brand-light); }
.app-table tbody tr:last-child td { border-bottom: none; }

/* Alineaciones y estilos de celda */
.app-table .c { text-align: center; }
.app-table .r { text-align: right; }
.app-table .mono { font-variant-numeric: tabular-nums; }
.app-table .strong { font-weight: 600; }
.app-table .app-empty {
    text-align: center;
    color: var(--text-mute);
    padding: 28px 12px;
    font-style: italic;
}

/* Íconos de acción como botones (vectoriales Tabler) */
.app-acciones { white-space: nowrap; }
.app-iconacc {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    margin: 0 2px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-soft);
    cursor: pointer;
    font-size: 16px;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
    text-decoration: none;
}
.app-iconacc:hover {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--on-brand);
    transform: translateY(-1px);
}
.app-iconacc.danger:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

/* =====================================================================
   PASO 13b — Paginado arriba/abajo + input de página
   ===================================================================== */
.app-listado-bottom {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 12px 0 4px;
    margin-top: 4px;
    border-top: 1px solid var(--border);
}
.app-listado-bottom .app-pager { padding: 0; margin: 0; }

/* Input para saltar de página */
.app-pager-input {
    width: 52px;
    height: 30px;
    margin: 0 4px;
    padding: 0 6px;
    text-align: center;
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
}
.app-pager-input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: var(--ring);
}
/* Quitar las flechitas del number en algunos navegadores para que quede prolijo */
.app-pager-input::-webkit-outer-spin-button,
.app-pager-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.app-pager-input { -moz-appearance: textfield; }

/* =====================================================================
   PASO 14 — FICHA: ancho igual a la tabla + barra de título + botones
   ===================================================================== */

/* La ficha al mismo ancho que la tabla (1200px) */
.app-form { max-width: 1200px; }

/* Tarjeta contenedora de toda la ficha con barra de título */
.app-form-card {
    max-width: 1200px;
    margin: 8px auto 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    text-align: left;
}
.app-form-card .app-form { max-width: none; margin: 0; padding: 16px 18px; }

/* Barra de título superior con degradado (como imagen 2) */
.app-form-titlebar {
    background-image: linear-gradient(90deg, #1e3a5f, var(--brand-dark));
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.app-form-titlebar .ti { font-size: 20px; opacity: .9; }

/* Fila de botones de acción de la ficha */
.app-form-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 4px 18px 20px;
}
.app-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: filter var(--transition), transform var(--transition), background-color var(--transition);
}
.app-btn:active { transform: translateY(1px); }
.app-btn-primary {
    background-image: linear-gradient(180deg, var(--success), #15803d);
    color: #fff;
}
.app-btn-primary:hover { filter: brightness(1.06); }
.app-btn-secondary {
    background: var(--surface-alt);
    border: 1px solid var(--border-strong);
    color: var(--text-soft);
}
.app-btn-secondary:hover { background: var(--border); color: var(--text); }

/* Alinear la toolbar de filtro al mismo ancho que ficha y tabla (1200) */
.app-toolbar { max-width: 1200px; margin-left: auto; margin-right: auto; }

/* =====================================================================
   PASO 15 — Estado readonly / disabled de inputs (que combine con el tema)
   El navegador pinta los readonly/disabled con un gris propio; acá los
   igualamos al tema, con un matiz más tenue que indique "no editable".
   ===================================================================== */
.app-form input[readonly],
.app-form select[disabled],
.app-form input[disabled],
.app-form textarea[readonly],
.input[readonly],
.inputd[readonly],
.inputs[readonly],
.inputw[readonly],
.inputvw[readonly],
.inputro {
    background-color: var(--surface) !important;
    color: var(--text) !important;
    border: 1px solid var(--border-strong) !important;
    border-radius: var(--radius-sm);
    cursor: default;
    opacity: 1;                 /* evita el "lavado" de disabled */
    -webkit-text-fill-color: var(--text);  /* Safari en disabled */
}
.app-form input[readonly]:focus,
.input[readonly]:focus {
    outline: none;
    box-shadow: none;
    border-color: var(--border-strong) !important;
}

/* =====================================================================
   PASO 16 — Estilar TODOS los inputs de la ficha (tengan clase o no)
   El campo Legajo (y otros de edit_reg) salen SIN clase, por eso caían
   en el estilo por defecto del navegador. Acá se cubren todos.
   ===================================================================== */
.app-form .app-field-input input[type="text"],
.app-form .app-field-input input:not([type]),
.app-form .app-field-input input[type="number"],
.app-form .app-field-input input[type="email"],
.app-form .app-field-input input[type="tel"],
.app-form .app-field-input input[type="date"],
.app-form .app-field-input select,
.app-form .app-field-input textarea {
    font-family: var(--font);
    font-size: 13px;
    color: var(--text);
    background-color: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    height: 34px;
    padding: 0 10px;
    box-sizing: border-box;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.app-form .app-field-input textarea {
    height: auto;
    min-height: 90px;
    padding: 10px;
    line-height: 1.5;
}
.app-form .app-field-input input:focus,
.app-form .app-field-input select:focus,
.app-form .app-field-input textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: var(--ring);
}

/* =====================================================================
   PASO 17 — RESPONSIVE / MÓVIL
   - Sidebar off-canvas (oculto) + hamburguesa + overlay.
   - Contenido a ancho completo.
   - Tabla: ocultar columnas .hide-mobile.
   ===================================================================== */

/* Hamburguesa: oculta en desktop */
.app-hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    margin-right: auto;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text);
    font-size: 22px;
    cursor: pointer;
}
.app-hamburger:hover { background: var(--surface-alt); }

/* Overlay: oculto por defecto */
.app-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .5);
    z-index: 999;
}

@media (max-width: 768px) {
    /* Sidebar fuera de pantalla por defecto (off-canvas) */
    .app-sidebar {
        width: var(--sidebar-w);
        transform: translateX(-100%);
        transition: transform var(--transition);
        z-index: 1000;
    }
    /* Contenido ocupa todo el ancho */
    .app-main {
        margin-left: 0 !important;
        max-width: 100% !important;
    }
    /* Mostrar hamburguesa */
    .app-hamburger { display: inline-flex; }

    /* Cuando está abierto: sidebar entra + overlay visible */
    body.sidebar-mobile-open .app-sidebar { transform: translateX(0); }
    body.sidebar-mobile-open .app-sidebar-overlay { display: block; }

    /* En móvil el sidebar nunca va colapsado a íconos */
    body.sidebar-collapsed .app-sidebar { width: var(--sidebar-w); }

    /* Ocultar columnas marcadas */
    .app-table .hide-mobile { display: none; }

    /* Ficha: una sola columna y ancho completo */
    .app-form-grid { grid-template-columns: 1fr; }
    .app-form-card, .app-form, .app-toolbar, .app-listado { max-width: 100%; }

    /* Toolbar de filtro: apilar */
    .app-toolbar { gap: 8px; }
    .app-toolbar-search { flex: 1 1 100%; }

    /* Paginado: que no desborde */
    .app-listado-top, .app-listado-bottom { justify-content: center; }
    .app-pager { flex-wrap: wrap; justify-content: center; }
    .app-pager-info { margin-left: 0; width: 100%; text-align: center; margin-top: 6px; }

    /* Padding lateral más chico */
    .app-main { padding: 0 10px 20px; }
    .app-listado { padding: 8px 8px 12px; }
}

/* =====================================================================
   PASO 18 — LOGIN (pantalla limpia, sin sidebar/topbar)
   ===================================================================== */
/* En login, el contenido ocupa todo el ancho (no hay sidebar) */
body.login-page .app-main,
.app-main-login {
    margin-left: 0 !important;
    max-width: 100% !important;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
body.login-page { background: var(--bg); }

.app-login {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    box-sizing: border-box;
}
.app-login-card {
    width: 100%;
    max-width: 460px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 38px 40px 34px;
    text-align: left;
}
.app-login-header { text-align: center; margin-bottom: 26px; }
.app-login-logo { max-width: 200px; max-height: 84px; height: auto; margin-bottom: 14px; }
.app-login-title { font-size: 21px; font-weight: 700; color: var(--text); }
.app-login-sub { font-size: 13px; color: var(--text-soft); margin-top: 3px; }

.app-login-field { margin-bottom: 18px; }
.app-login-field label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-soft);
    margin-bottom: 6px;
}
.app-login-input { position: relative; }
.app-login-input > .ti {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-mute);
    font-size: 18px;
    pointer-events: none;
}
.app-login-input input {
    width: 100%;
    height: 46px;
    padding: 0 12px 0 42px;
    box-sizing: border-box;
    font-family: var(--font);
    font-size: 15px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.app-login-input input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: var(--ring);
}

.app-login-btn {
    width: 100%;
    height: 48px;
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: var(--radius-sm);
    background-image: linear-gradient(180deg, var(--brand), var(--brand-dark));
    color: var(--on-brand);
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: filter var(--transition), transform var(--transition);
}
.app-login-btn:hover { filter: brightness(1.06); }
.app-login-btn:active { transform: translateY(1px); }

.app-login-msg {
    margin-top: 16px;
    padding: 10px 14px;
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger);
    border-radius: var(--radius-sm);
    font-size: 13px;
    text-align: center;
}

/* =====================================================================
   PASO 19 — DASHBOARD (inicial.sys.php): bienvenida + atajos
   ===================================================================== */
.dash { max-width: 1700px; margin: 0 auto; padding: 20px 4px 28px; text-align: left; width: 100%; }

/* ---- Bienvenida ---- */
.dash-welcome {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    background-image: linear-gradient(120deg, var(--brand-light), var(--surface));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 28px;
    margin-bottom: 22px;
}
.dash-welcome-text h1 {
    text-align: left;
    white-space: normal;
    font-size: 26px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 6px;
    letter-spacing: -.02em;
}
.dash-welcome-text p { margin: 0; color: var(--text-soft); font-size: 14px; }
.dash-welcome-art {
    flex: 0 0 auto;
    width: 84px; height: 84px;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}
.dash-welcome-art .ti { font-size: 44px; color: var(--brand); }

/* ---- Sección ---- */
.dash-section-head { margin: 6px 2px 14px; }
.dash-section-head h2 { text-align: left; white-space: normal; font-size: 17px; font-weight: 700; color: var(--text); margin: 0; }

/* ---- Grid de atajos ---- */
.dash-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.dash-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 18px 18px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.dash-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--brand);
    text-decoration: none;
}
.dash-card-icon {
    width: 66px; height: 66px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 30px;
    color: #fff;
    margin-bottom: 8px;
}
.dash-card-title { font-size: 15px; font-weight: 700; color: var(--text); }
.dash-card-desc { font-size: 12.5px; color: var(--text-soft); line-height: 1.4; }
.dash-card-go {
    margin-top: 8px;
    width: 34px; height: 34px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface-alt);
    color: var(--text-soft);
    font-size: 18px;
    transition: background-color var(--transition), color var(--transition);
}
.dash-card:hover .dash-card-go { background: var(--brand); color: #fff; }

/* Colores de los íconos de atajo */
.dash-c-violet .dash-card-icon { background: #8b5cf6; }
.dash-c-blue   .dash-card-icon { background: #3b82f6; }
.dash-c-green  .dash-card-icon { background: #22c55e; }
.dash-c-orange .dash-card-icon { background: #f59e0b; }
.dash-c-teal   .dash-card-icon { background: #14b8a6; }
.dash-c-red    .dash-card-icon { background: #ef4444; }
.dash-c-indigo .dash-card-icon { background: #6366f1; }
.dash-c-gray   .dash-card-icon { background: #64748b; }

/* Responsive */
@media (max-width: 1024px) { .dash-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  {
    .dash-grid { grid-template-columns: 1fr; }
    .dash-welcome { flex-direction: column; text-align: center; }
    .dash-welcome-text h1 { text-align: center; }
}

/* =====================================================================
   PASO 19b — DASHBOARD widgets (layout 2 columnas + paneles)
   ===================================================================== */
.dash-layout {
    display: grid;
/*    grid-template-columns: 1fr 360px;*/
    gap: 20px;
    align-items: start;
}
.dash-main { min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.dash-side { display: flex; flex-direction: column; gap: 20px; }

/* Panel genérico */
.dash-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 16px 18px;
}
.dash-panel-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 14px;
}
.dash-panel-head h3 { margin: 0; font-size: 15px; font-weight: 700; color: var(--text); }
.dash-link { font-size: 12.5px; font-weight: 600; color: var(--brand); text-decoration: none; }
.dash-link:hover { text-decoration: underline; }

/* --- Resumen del día (stats) --- */
.dash-stat {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    background: var(--surface-alt);   /* fallback si no hay color-mix */
}
.dash-stat:last-child { margin-bottom: 0; }
.dash-stat-ico {
    width: 42px; height: 42px; border-radius: 50%;
}



.atajos-modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,.5);
    z-index: 9999; display: flex; align-items: center; justify-content: center;
}
.atajos-modal {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; width: 90%; max-width: 520px; max-height: 85vh;
    display: flex; flex-direction: column; overflow: hidden; color: var(--text);
}
.atajos-modal-head, .atajos-modal-foot {
    padding: 1rem 1.25rem; display: flex; align-items: center; gap: .5rem;
}
.atajos-modal-head {
    justify-content: space-between; border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, var(--brand), var(--brand-dark)); color:#fff;
}
.atajos-modal-head strong { color: #fff; }
.atajos-modal-foot { border-top: 1px solid var(--border); justify-content: flex-end; }
.atajos-modal-body { padding: 1rem 1.25rem; overflow-y: auto; }
.atajos-modal-body p { color: var(--text-soft); font-size: .85rem; }
.btn-close-atajos { background: none; border: 0; font-size: 1.5rem; color: #fff; cursor: pointer; }

.atajos-lista { list-style: none; padding: 0; margin: 0; }
.atajos-item {
    display: flex; align-items: center; gap: .7rem;
    padding: .6rem .7rem; border: 1px solid var(--border);
    border-radius: 8px; margin-bottom: .5rem; background: var(--surface-alt);
    color: var(--text);
}
.atajos-drag { color: var(--text-soft); cursor: grab; }
.atajos-nombre { font-weight: 600; color: var(--text); flex: 1; }
.atajos-preview {
    width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: .9rem;
}
.atajos-config-btn {
    background: none; border: 1px solid var(--border); border-radius: 6px;
    color: var(--text-soft); cursor: pointer; padding: .3rem .5rem;
}
.atajos-config-btn:hover { color: var(--brand); border-color: var(--brand); }

.atajos-config-pop {
    position: absolute; z-index: 10001;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 10px; padding: .8rem; width: 260px;
    box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.atajos-config-label { font-size: .75rem; color: var(--text-soft); margin-bottom: .4rem; font-weight: 600; }
.atajos-config-section { margin-bottom: .8rem; }
.atajos-config-iconos { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.atajos-ico-opt {
    aspect-ratio: 1; border: 1px solid var(--border); border-radius: 6px;
    background: var(--surface-alt); color: var(--text); cursor: pointer;
    display: flex; align-items: center; justify-content: center; font-size: .85rem;
}
.atajos-ico-opt:hover { border-color: var(--brand); }
.atajos-ico-opt.sel { border-color: var(--brand); background: var(--brand-light); }

.atajos-config-colores { display: flex; gap: 6px; flex-wrap: wrap; }
.atajos-col-opt {
    width: 28px; height: 28px; border-radius: 50%; cursor: pointer;
    border: 2px solid transparent; padding: 0;
}
.atajos-col-opt.sel { border-color: var(--text); box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--brand); }

/* Colores de los círculos del selector */
.atajos-col-opt.dash-c-she    { background: #ec4899; }
.atajos-col-opt.dash-c-teal   { background: #14b8a6; }
.atajos-col-opt.dash-c-indigo { background: #6366f1; }
.atajos-col-opt.dash-c-red    { background: #ef4444; }
.atajos-col-opt.dash-c-green  { background: #22c55e; }
.atajos-col-opt.dash-c-orange { background: #f59e0b; }
.atajos-col-opt.dash-c-violet { background: #8b5cf6; }
.atajos-col-opt.dash-c-blue   { background: #3b82f6; }
.atajos-col-opt.dash-c-gray   { background: #6b7280; }


/* 1. Fondo oscuro que bloquea e inmóviliza el modal en pantalla */
#modalEmailOverlay {
    position: fixed !important;  /* ¡Crucial! Lo clava a la pantalla del monitor, no a la página */
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background-color: rgba(0, 0, 0, 0.5) !important;
    z-index: 10000 !important;
    
    /* Sistema de centrado perfecto */
    display: none;              /* Tu JavaScript lo cambia a 'flex' al abrir */
    align-items: center !important;    /* Centra verticalmente en el monitor */
    justify-content: center !important;  /* Centra horizontalmente en el monitor */
}

.app-modal {
    background: #ffffff !important;
    padding: 25px !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3) !important;
    
    /* 1. Medidas iniciales (desde dónde arranca) */
    width: 400px !important;            /* Ancho inicial */
    height: auto !important;            /* Alto inicial adaptado al contenido */
    
    /* 2. Medidas límites (opcional, para que no lo rompan) */
    min-width: 300px !important;        /* No permite achicarlo más de esto */
    max-width: 90vw !important;         /* No permite agrandarlo más que la pantalla */
    min-height: 200px !important;       
    max-height: 85vh !important;        
    
    /* 3. Activadores del Resizer */
    resize: both !important;            /* Permite estirar horizontal y verticalmente */
    overflow: auto !important;          /* Obligatorio para que funcione 'resize' */
}