:root {
    --negro: #0f0f10;
    --negro-suave: #1c1c1f;
    --gris-900: #1f1f23;
    --gris-700: #45454b;
    --gris-500: #767680;
    --gris-300: #d4d4d9;
    --gris-200: #e6e6ea;
    --gris-100: #f1f1f4;
    --blanco: #ffffff;
    --error: #c1362d;
    --error-bg: #fbebea;
    --exito-bg: #eef1ee;
    --verde: #1c9950;
    --verde-suave: #e8f7ee;
    --verde-borde: #b9e6c9;
    --morado: #7c3fc4;
    --morado-suave: #f2eafb;
    --morado-borde: #d9c1f0;
    --radio: 14px;
    --radio-sm: 8px;
    --sombra: 0 1px 2px rgba(15,15,16,0.04), 0 8px 24px -12px rgba(15,15,16,0.12);
    --sombra-modal: 0 24px 60px -20px rgba(15,15,16,0.35);
    --sidebar-w: 248px;
    --transicion: 160ms ease;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: "Inter", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--gris-100);
    color: var(--negro);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

h1, h2, h3 {
    font-weight: 650;
    letter-spacing: -0.01em;
    margin-top: 0;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.05rem; }

/* ---------- Layout shell (sidebar + content) ---------- */

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: var(--negro);
    color: var(--blanco);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 40;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1.25rem 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 0.5rem;
}

.sidebar-brand img {
    height: 80px;
    width: auto;
    border-radius: 8px;
}

.sidebar-nav {
    flex: 1;
    padding: 0.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radio-sm);
    text-decoration: none;
    color: #c7c7cf;
    font-size: 0.88rem;
    font-weight: 500;
    transition: background var(--transicion), color var(--transicion);
}

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.85;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.08);
    color: var(--blanco);
}

.sidebar-nav a.activo {
    background: var(--blanco);
    color: var(--negro);
}

.sidebar-nav a.activo svg {
    opacity: 1;
}

.sidebar-nav .separador {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 0.6rem 0.75rem;
}

.sidebar-footer {
    padding: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-usuario {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 0.4rem;
    margin-bottom: 0.4rem;
}

.sidebar-avatar {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: var(--gris-700);
    color: var(--blanco);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 650;
    flex-shrink: 0;
}

.sidebar-usuario .nombre {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blanco);
    line-height: 1.2;
}

.sidebar-usuario .rol {
    font-size: 0.72rem;
    color: var(--gris-500);
}

.sidebar-footer a.salir {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.4rem;
    border-radius: var(--radio-sm);
    color: #c7c7cf;
    text-decoration: none;
    font-size: 0.85rem;
    transition: background var(--transicion), color var(--transicion);
}

.sidebar-footer a.salir:hover {
    background: rgba(255,255,255,0.08);
    color: var(--blanco);
}

.sidebar-footer a.salir svg {
    width: 17px;
    height: 17px;
}

.app-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--blanco);
    border-bottom: 1px solid var(--gris-200);
    position: sticky;
    top: 0;
    z-index: 30;
}

.topbar button {
    background: none;
    border: none;
    padding: 0.35rem;
    cursor: pointer;
    color: var(--negro);
}

.topbar img {
    height: 31px;
}

#sidebar-overlay {
    display: none;
}

.contenedor {
    max-width: 1080px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.75rem 3rem;
}

.contenedor-angosto {
    max-width: 420px;
    margin: 0 auto;
    padding: 1rem;
}

.pagina-auth {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--negro);
    padding: 1.5rem;
}

.pagina-auth-bg {
    background-image: linear-gradient(rgba(15,15,16,0.82), rgba(15,15,16,0.82)), url('/assets/img/bg.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.pagina-auth .tarjeta {
    width: 100%;
    max-width: 380px;
}

.pagina-auth .marca-auth {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
}

.pagina-auth .marca-auth img {
    height: 53px;
    border-radius: 8px;
}

.pagina-auth .marca-auth span {
    color: var(--blanco);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.pagina-auth .contenedor {
    padding: 0;
    max-width: none;
    width: auto;
    margin: 0;
}

/* ---------- Cards & sections ---------- */

.tarjeta {
    background: var(--blanco);
    border: 1px solid var(--gris-200);
    border-radius: var(--radio);
    padding: 1.5rem;
    box-shadow: var(--sombra);
}

.tarjeta + .tarjeta,
.seccion + .tarjeta,
.tarjeta + .seccion {
    margin-top: 1.25rem;
}

.tarjeta-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tarjeta-header h2 {
    margin: 0;
}

.tarjeta-header p.subtitulo {
    margin: 0.15rem 0 0;
    font-size: 0.85rem;
    color: var(--gris-500);
}

/* ---------- Forms ---------- */

form.formulario label {
    display: block;
    margin: 0.85rem 0 0.3rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gris-700);
}

form.formulario label:first-of-type {
    margin-top: 0;
}

form.formulario input,
form.formulario select,
form.formulario textarea,
select.select-suelto {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--gris-300);
    border-radius: var(--radio-sm);
    font-size: 0.92rem;
    background: var(--blanco);
    color: var(--negro);
    font-family: inherit;
    transition: border-color var(--transicion), box-shadow var(--transicion);
}

form.formulario input:focus,
form.formulario select:focus,
form.formulario textarea:focus,
select.select-suelto:focus {
    outline: none;
    border-color: var(--negro);
    box-shadow: 0 0 0 3px rgba(15,15,16,0.08);
}

form.formulario input:disabled {
    background: var(--gris-100);
    color: var(--gris-500);
}

.campo-password {
    position: relative;
}

.campo-password input {
    padding-right: 2.5rem !important;
}

.alternar-password {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 0.25rem;
    color: var(--gris-500);
    cursor: pointer;
}

.alternar-password:hover {
    color: var(--negro);
}

.alternar-password svg {
    width: 18px;
    height: 18px;
}

.campo-ayuda {
    font-size: 0.76rem;
    color: var(--gris-500);
    margin-top: 0.3rem;
}

.form-pie {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    margin-top: 1.5rem;
}

/* ---------- Autocompletar (buscador de alumnos) ---------- */

.autocompletar {
    position: relative;
}

.autocompletar-lista {
    display: none;
    position: absolute;
    z-index: 20;
    top: calc(100% + 0.25rem);
    left: 0;
    right: 0;
    max-height: 220px;
    overflow-y: auto;
    background: var(--blanco);
    border: 1px solid var(--gris-300);
    border-radius: var(--radio-sm);
    box-shadow: 0 8px 20px rgba(15,15,16,0.12);
}

.autocompletar-lista.visible {
    display: block;
}

.autocompletar-item {
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: none;
    border-bottom: 1px solid var(--gris-100);
    background: var(--blanco);
    text-align: left;
    font-family: inherit;
    cursor: pointer;
}

.autocompletar-item:last-child {
    border-bottom: none;
}

.autocompletar-item:hover {
    background: var(--gris-100);
}

.autocompletar-item span {
    font-size: 0.78rem;
    color: var(--gris-500);
}

.autocompletar-vacio {
    padding: 0.6rem 0.75rem;
    font-size: 0.82rem;
    color: var(--gris-500);
}

/* ---------- Buttons ---------- */

.boton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    background: var(--negro);
    color: var(--blanco);
    border: 1px solid var(--negro);
    padding: 0.6rem 1.1rem;
    border-radius: var(--radio-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transicion), background var(--transicion), opacity var(--transicion);
    white-space: nowrap;
}

.boton:hover {
    background: var(--negro-suave);
}

.boton:active {
    transform: scale(0.97);
}

.boton:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.boton.secundario {
    background: var(--blanco);
    color: var(--negro);
    border: 1px solid var(--gris-300);
}

.boton.secundario:hover {
    background: var(--gris-100);
    border-color: var(--gris-500);
}

.boton.peligro {
    background: var(--blanco);
    color: var(--error);
    border: 1px solid #f0c9c6;
}

.boton.peligro:hover {
    background: var(--error-bg);
    border-color: var(--error);
}

.boton.ancho {
    width: 100%;
}

.boton.chico {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.boton.icono {
    padding: 0.5rem;
    width: 34px;
    height: 34px;
    gap: 0;
}

.boton svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ---------- Messages / toasts ---------- */

.mensaje {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radio-sm);
    margin-bottom: 1.25rem;
    font-size: 0.88rem;
    border: 1px solid transparent;
}

.mensaje svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.mensaje.error {
    background: var(--error-bg);
    color: var(--error);
    border-color: #f0c9c6;
}

.mensaje.exito {
    background: var(--exito-bg);
    color: var(--negro);
    border-color: var(--gris-300);
}

/* ---------- Tables ---------- */

.tabla-envoltorio {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 0.7rem 0.6rem;
    border-bottom: 1px solid var(--gris-200);
    font-size: 0.87rem;
    vertical-align: middle;
}

th {
    color: var(--gris-500);
    font-weight: 650;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.04em;
}

tbody tr {
    transition: background var(--transicion);
}

tbody tr:hover {
    background: var(--gris-100);
}

tbody tr:last-child td {
    border-bottom: none;
}

td.acciones-celda {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

@media (max-width: 860px) {
    td.acciones-celda.vertical {
        flex-direction: column;
        align-items: flex-start;
        width: fit-content;
    }
}

.vacio {
    text-align: center;
    color: var(--gris-500);
    padding: 2rem 1rem;
}

.celda-telefono {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.boton-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border: 1.5px solid #25D366;
    border-radius: 999px;
    background: var(--blanco);
    color: #25D366;
    padding: 0;
    cursor: pointer;
    transition: background var(--transicion), color var(--transicion);
}

.boton-whatsapp svg {
    width: 15px;
    height: 15px;
}

.boton-whatsapp:hover {
    background: #25D366;
    color: var(--blanco);
}

.lista-plantillas-whatsapp {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.plantilla-whatsapp {
    display: block;
    width: 100%;
    text-align: left;
    background: var(--blanco);
    color: var(--negro);
    border: 1px solid var(--gris-300);
    border-radius: var(--radio-sm);
    padding: 0.7rem 0.9rem;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transicion), border-color var(--transicion);
}

.plantilla-whatsapp:hover {
    background: var(--gris-100);
    border-color: #25D366;
    color: #1c9950;
}

/* ---------- Badges ---------- */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 650;
    border: 1px solid var(--gris-300);
    color: var(--gris-700);
}

.badge.negro {
    background: var(--negro);
    color: var(--blanco);
    border-color: var(--negro);
}

.badge.suave {
    background: var(--gris-100);
    border-color: var(--gris-200);
}

.badge.error {
    background: var(--error-bg);
    color: var(--error);
    border-color: #f0c9c6;
}

/* ---------- Dashboard stat tiles ---------- */

.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.grid-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    align-items: stretch;
}

@media (max-width: 860px) {
    .grid-panel {
        grid-template-columns: 1fr;
    }
}

.grid-panel > .tarjeta {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-top: 0;
}

.grid-panel > .tarjeta .tabla-envoltorio {
    flex: 1;
    max-height: 320px;
    overflow-y: auto;
}

.stat-tile {
    background: var(--blanco);
    border: 1px solid var(--gris-200);
    border-radius: var(--radio);
    padding: 1.15rem 1.25rem;
    box-shadow: var(--sombra);
}

.stat-tile .valor {
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 0.15rem;
}

.stat-tile .etiqueta {
    font-size: 0.78rem;
    color: var(--gris-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ---------- Calendar / class cards ---------- */

.grid-calendario {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

.clase-tarjeta {
    background: var(--blanco);
    border: 1px solid var(--gris-200);
    border-radius: var(--radio);
    padding: 1.1rem 1.2rem;
    box-shadow: var(--sombra);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.clase-tarjeta h3 {
    margin: 0;
    font-size: 1rem;
}

.clase-tarjeta .meta {
    color: var(--gris-500);
    font-size: 0.82rem;
    line-height: 1.5;
}

.clase-tarjeta form {
    margin-top: auto;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.toolbar span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gris-700);
}

/* ---------- Calendario semanal (tipo agenda) ---------- */

.calendario-envoltorio {
    overflow-x: auto;
}

.calendario-semana {
    display: grid;
    grid-template-columns: repeat(7, minmax(140px, 1fr));
    gap: 1px;
    background: var(--gris-200);
    border: 1px solid var(--gris-200);
    border-radius: var(--radio-sm);
    overflow: hidden;
}

.columna-dia {
    background: var(--blanco);
    min-height: 220px;
    padding: 0.6rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.columna-dia.hoy {
    background: var(--gris-100);
}

.columna-dia-cabecera {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--gris-200);
}

.nombre-dia {
    font-size: 0.72rem;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gris-500);
}

.num-dia {
    font-size: 0.78rem;
    font-weight: 650;
    color: var(--gris-700);
}

.columna-dia.hoy .num-dia {
    background: var(--negro);
    color: var(--blanco);
    width: 22px;
    height: 22px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.agregar-dia {
    background: none;
    border: none;
    color: var(--gris-300);
    cursor: pointer;
    padding: 0.1rem;
    border-radius: 4px;
    line-height: 0;
    opacity: 0;
    margin-left: auto;
    transition: opacity var(--transicion), color var(--transicion), background var(--transicion);
}

.agregar-dia svg {
    width: 14px;
    height: 14px;
}

.columna-dia:hover .agregar-dia {
    opacity: 1;
}

.agregar-dia:hover {
    color: var(--negro);
    background: var(--gris-200);
}

.dia-clases {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

@media (max-width: 860px) {
    .calendario-semana {
        display: flex;
        flex-direction: column;
    }

    .columna-dia {
        min-height: auto;
    }

    .dia-clases {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

.clase-pill {
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
    background: var(--gris-100);
    border: 1px solid var(--gris-200);
    border-radius: 6px;
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    text-decoration: none;
    color: var(--negro);
    font-family: inherit;
    text-align: left;
    cursor: pointer;
    opacity: 0.8;
    transition: background var(--transicion), opacity var(--transicion);
}

.clase-pill span {
    font-size: 0.7rem;
    color: var(--gris-500);
}

.clase-pill:hover {
    background: var(--gris-200);
    opacity: 1;
}

.clase-pill.futura {
    background: var(--verde-suave);
    border-color: var(--verde-borde);
    opacity: 1;
}

.clase-pill.futura span {
    color: var(--verde);
}

.clase-pill.futura:hover {
    background: #d8f1e1;
}

.clase-pill.llena {
    background: var(--error-bg);
    border-color: var(--error);
    color: var(--error);
}

.clase-pill.llena span {
    color: var(--error);
    opacity: 0.75;
}

.clase-pill.llena:hover {
    background: #f7d9d6;
}

.clase-pill.cancelada {
    background: var(--gris-100);
    border-color: var(--gris-200);
    text-decoration: line-through;
    opacity: 0.5;
}

.clase-pill.pasada {
    opacity: 0.45;
    filter: grayscale(0.4);
}

.clase-pill.inscrito {
    background: var(--verde-suave);
    border-color: var(--verde);
    border-width: 1.5px;
    color: var(--negro);
    opacity: 1;
}

.clase-pill.inscrito span {
    color: var(--verde);
}

.clase-pill.inscrito:hover {
    background: #d8f1e1;
}

.mas-clases-btn {
    font-size: 0.7rem;
    color: var(--gris-500);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    padding: 0;
    font-weight: 600;
}

.mas-clases-btn:hover {
    color: var(--negro);
    text-decoration: underline;
}

.lista-clases-dia {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.clase-item-modal {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 1px solid var(--gris-200);
    border-radius: var(--radio-sm);
    font-size: 0.85rem;
}

.clase-item-modal > div:first-child div {
    color: var(--gris-500);
    font-size: 0.8rem;
    margin-top: 0.1rem;
}

.clase-item-modal .acciones-celda {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}


/* ---------- Modals (native <dialog>) ---------- */

dialog.modal {
    border: none;
    border-radius: var(--radio);
    padding: 0;
    width: min(480px, calc(100vw - 2rem));
    box-shadow: var(--sombra-modal);
    background: var(--blanco);
}

dialog.modal::backdrop {
    background: rgba(15,15,16,0.55);
    backdrop-filter: blur(2px);
}

dialog.modal[open] {
    animation: modal-in 160ms ease;
}

@keyframes modal-in {
    from { opacity: 0; transform: translateY(8px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem 0.5rem;
}

.modal-header h2 {
    margin: 0;
}

.modal-cerrar {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gris-500);
    padding: 0.3rem;
    border-radius: 999px;
    display: flex;
    transition: background var(--transicion), color var(--transicion);
}

.modal-cerrar:hover {
    background: var(--gris-100);
    color: var(--negro);
}

.modal-cerrar svg {
    width: 18px;
    height: 18px;
}

.modal-cuerpo {
    padding: 0.5rem 1.5rem 1.5rem;
}

.modal-cuerpo p.descripcion {
    color: var(--gris-700);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ---------- Utility ---------- */

.oculto-movil {
    display: initial;
}

.solo-movil {
    display: none;
}

@media (max-width: 860px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        transition: transform var(--transicion);
        box-shadow: var(--sombra-modal);
    }

    .sidebar.abierta {
        transform: translateX(0);
    }

    .topbar {
        display: flex;
    }

    #sidebar-overlay.visible {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15,15,16,0.45);
        z-index: 35;
    }

    .contenedor {
        padding: 1.25rem 1rem 2.5rem;
    }

    .oculto-movil {
        display: none;
    }

    .solo-movil {
        display: initial;
    }

    h1 { font-size: 1.3rem; }

    .tarjeta {
        padding: 1.1rem;
    }

    .toolbar {
        align-items: stretch;
    }

    .toolbar > .boton {
        width: 100%;
    }

    .form-pie {
        flex-direction: column-reverse;
    }

    .form-pie .boton {
        width: 100%;
    }

    .modal-header {
        padding: 1.1rem 1.1rem 0.4rem;
    }

    .modal-cuerpo {
        padding: 0.4rem 1.1rem 1.1rem;
    }

    .clase-item-modal {
        flex-direction: column;
        align-items: stretch;
    }

    .clase-item-modal .acciones-celda {
        justify-content: flex-start;
    }
}

/* Evita el zoom automático de iOS Safari al enfocar campos con
   font-size menor a 16px. */
@media (max-width: 480px) {
    form.formulario input,
    form.formulario select,
    form.formulario textarea,
    select.select-suelto {
        font-size: 16px;
    }

    .columna-dia {
        padding: 0.45rem;
    }

    .dia-clases {
        grid-template-columns: 1fr;
    }

    .grid-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}