:root {
    --color-bg: #f5f6f4;
    --color-surface: #ffffff;
    --color-border: #e2e4df;
    --color-text: #22261f;
    --color-text-muted: #6b7266;
    --color-primary: #3a7d44;
    --color-primary-dark: #2c5f34;
    --color-danger: #b23a3a;
    --color-warning: #b8860b;
    --radius: 10px;
    --gap: 12px;
    font-size: 16px;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    padding-bottom: 160px;
}

a {
    color: var(--color-primary-dark);
}

h1, h2, h3 {
    margin: 0 0 8px 0;
    line-height: 1.25;
}

.contenedor {
    max-width: 720px;
    margin: 0 auto;
    padding: 12px 14px 32px;
}

/* Navegacion */

nav.tabs {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    display: flex;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -2px 10px rgba(34, 38, 31, 0.06);
    padding-bottom: env(safe-area-inset-bottom, 0);
}

nav.tabs a {
    flex: 1;
    text-align: center;
    padding: 12px 8px;
    text-decoration: none;
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    border-top: 3px solid transparent;
}

nav.tabs a.activa {
    color: var(--color-primary-dark);
    border-top-color: var(--color-primary);
}

/* Tarjetas y superficies */

.tarjeta {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: var(--gap);
}

a.tarjeta-receta {
    display: block;
    color: inherit;
    text-decoration: none;
}

a.tarjeta-receta:active {
    background: var(--color-bg);
}

.tarjeta h2, .tarjeta h3 {
    margin-top: 0;
}

/* Botones */

button, .boton {
    font: inherit;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
}

button:active {
    transform: translateY(1px);
}

button.secundario {
    background: transparent;
    color: var(--color-primary-dark);
    border: 1px solid var(--color-border);
}

button.peligro {
    background: var(--color-danger);
}

button.fantasma-peligro {
    display: block;
    width: 100%;
    margin-top: 14px;
    background: transparent;
    color: var(--color-danger);
    border: none;
    font-weight: 600;
}

button.fantasma-peligro:hover {
    text-decoration: underline;
}

button.pequeno {
    padding: 6px 10px;
    font-size: 0.85rem;
}

button.ancho-completo {
    display: block;
    width: 100%;
    margin-top: 16px;
}

button.icono {
    background: transparent;
    color: var(--color-text-muted);
    padding: 4px 8px;
    font-size: 1.1rem;
}

button.icono.confirmar {
    color: var(--color-primary-dark);
}

button.icono.cancelar {
    color: var(--color-danger);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Formularios */

label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
    margin-top: 10px;
}

input[type="text"], input[type="number"], select, textarea {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: white;
    font: inherit;
}

textarea {
    resize: vertical;
}

.fila {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.fila > * {
    flex: 1;
}

.fila-compacta {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Resumen / progreso */

.progreso {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: var(--gap);
}

.progreso-texto {
    font-weight: 600;
}

.barra-progreso {
    flex: 1;
    height: 8px;
    background: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}

.barra-progreso > div {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.2s ease;
}

/* Lista de compra */

.categoria-titulo {
    margin: 20px 0 8px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

.item-lista {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 4px;
    border-bottom: 1px solid var(--color-border);
}

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

.item-lista input[type="checkbox"] {
    width: 22px;
    height: 22px;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--color-primary);
}

.item-texto {
    flex: 1;
    min-width: 0;
}

.item-nombre {
    font-weight: 600;
}

.item-lista.tachado .item-nombre,
.item-lista.tachado .item-cantidad {
    text-decoration: line-through;
    color: var(--color-text-muted);
    font-weight: 400;
}

.item-cantidad {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.item-fuentes {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.aviso-mixto {
    color: var(--color-warning);
    font-size: 0.8rem;
    font-weight: 600;
}

.chip {
    display: inline-block;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    padding: 2px 7px;
    font-size: 0.8rem;
    margin: 2px 4px 2px 0;
}

.vacio {
    color: var(--color-text-muted);
    font-style: italic;
    padding: 8px 0;
}

.suelto-fila, .linea-receta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    border-bottom: 1px solid var(--color-border);
}

.suelto-fila:last-child, .linea-receta:last-child {
    border-bottom: none;
}

.suelto-fila .info, .linea-receta .info {
    flex: 1;
}

.receta-cabecera {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.receta-meta {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.receta-activa-controles {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.receta-activa-controles input[type="number"] {
    width: 70px;
}

.acciones {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.mensaje {
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: var(--gap);
    font-size: 0.9rem;
}

.mensaje.error {
    background: #fbe9e7;
    color: var(--color-danger);
}

.mensaje.info {
    background: #eef3ec;
    color: var(--color-primary-dark);
}

.oculto {
    display: none !important;
}

.tabla-articulos {
    width: 100%;
    border-collapse: collapse;
}

.tabla-articulos th, .tabla-articulos td {
    text-align: left;
    padding: 8px 6px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}

.tabla-articulos th {
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
}

@media (max-width: 480px) {
    .tabla-articulos th:nth-child(2),
    .tabla-articulos td:nth-child(2) {
        display: none;
    }
}

.pie-formulario {
    display: flex;
    gap: 8px;
    margin-top: 14px;
}

@media (max-width: 480px) {
    .fila {
        flex-direction: column;
        align-items: stretch;
    }
}

/* Boton flotante "Anadir" */

.fab {
    position: fixed;
    right: 18px;
    bottom: calc(70px + env(safe-area-inset-bottom, 0));
    z-index: 15;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 14px 20px;
    border-radius: 999px;
    font-size: 1rem;
    box-shadow: 0 6px 16px rgba(34, 38, 31, 0.28);
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.fab span {
    font-size: 1.2rem;
    line-height: 1;
}

/* Modal "Anadir a la lista" */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 22, 18, 0.45);
    z-index: 100;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.modal-panel {
    background: var(--color-surface);
    width: 100%;
    max-width: 560px;
    height: 88vh;
    max-height: 88vh;
    border-radius: 16px 16px 0 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

@media (min-width: 640px) {
    .modal-overlay {
        align-items: center;
    }
    .modal-panel {
        border-radius: 16px;
        height: 80vh;
        max-height: 80vh;
        margin: 20px;
    }
}

/* Variante compacta: se ajusta al contenido (confirmaciones, dialogos cortos). */
.modal-overlay.centrado {
    align-items: center;
}

.modal-panel.compacto {
    height: auto;
    max-height: 80vh;
    border-radius: 16px;
    margin: 20px;
}

.modal-panel.compacto .modal-body {
    flex: none;
}

.modal-panel.compacto .modal-body p {
    margin: 0 0 10px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.1rem;
}

.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.modal-tab {
    flex: 1;
    background: transparent;
    color: var(--color-text-muted);
    border: none;
    border-radius: 0;
    padding: 12px 8px;
    font-weight: 600;
    border-bottom: 3px solid transparent;
}

.modal-tab.activa {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}

.modal-body {
    flex: 1;
    min-height: 0;
    padding: 14px 16px 20px;
    overflow-y: auto;
}

.resultado-fila {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.resultado-fila:last-child {
    border-bottom: none;
}

.resultado-fila .info {
    flex: 1;
    min-width: 0;
}

.resultado-nombre {
    font-weight: 600;
}

.resultado-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.resultado-fila input[type="number"] {
    width: 66px;
    flex-shrink: 0;
}

.resultado-fila select {
    width: 92px;
    flex-shrink: 0;
}

.crear-inline {
    margin-top: 14px;
    padding: 12px;
    border: 1px dashed var(--color-border);
    border-radius: 8px;
    background: var(--color-bg);
}

.crear-inline p {
    margin: 0 0 10px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.crear-inline .fila {
    margin-bottom: 10px;
}

/* Selector de categoria (input + panel desplegable) */

.categoria-selector {
    position: relative;
}

.categoria-opciones {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 4px);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 6px 16px rgba(34, 38, 31, 0.18);
    max-height: 180px;
    overflow-y: auto;
    z-index: 20;
}

.categoria-opcion {
    display: block;
    width: 100%;
    text-align: left;
    background: transparent;
    color: var(--color-text);
    border: none;
    border-radius: 0;
    padding: 9px 12px;
    font-weight: 400;
    font-size: 0.9rem;
}

.categoria-opcion:hover,
.categoria-opcion:focus {
    background: var(--color-bg);
}

.categoria-opcion-vacia {
    padding: 9px 12px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.nombre-con-chip {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px 8px;
}

/* Selector de etiquetas multiples (chips + input libre) */

.tags-selector {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: white;
}

.tags-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 0;
}

.tag-chip button {
    background: transparent;
    color: inherit;
    opacity: 0.7;
    padding: 0;
    font-size: 0.9rem;
    line-height: 1;
    font-weight: 700;
}

.tags-selector input[type="text"] {
    flex: 1;
    min-width: 120px;
    border: none;
    padding: 4px 2px;
}

.tags-selector input[type="text"]:focus {
    outline: none;
}

/* ---------- Pagina de detalle de receta (receta.html) ---------- */

body.pagina-receta {
    padding-bottom: 0;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

.receta-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
}

.receta-pagina-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    flex: none;
}

.receta-pagina-header-titulo {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.boton-header {
    font-size: 1.3rem;
    flex-shrink: 0;
}

.receta-pagina-titulo {
    margin-bottom: 12px;
}

.receta-pagina-titulo #vista-titulo {
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.25;
    margin-bottom: 8px;
}

.receta-pagina-titulo #vista-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 6px;
}

.receta-pagina-mensajes {
    flex: none;
}

.receta-pagina-mensajes:not(:empty) {
    padding: 10px 14px 0;
}

.receta-pagina-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 14px;
}

.receta-instrucciones {
    white-space: pre-wrap;
    line-height: 1.5;
}

.receta-barra-fija {
    flex: none;
    padding: 12px 14px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.receta-barra-porciones {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.stepper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stepper input {
    width: 60px;
    text-align: center;
}

.stepper button {
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1.1rem;
    padding: 0;
    background: transparent;
    color: var(--color-text);
}

#barra-editar {
    display: flex;
    gap: 8px;
}

#barra-editar button {
    flex: 1;
}

.ingrediente-vista-fila {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 9px 0;
    border-bottom: 1px solid var(--color-border);
}

.ingrediente-vista-fila:last-child {
    border-bottom: none;
}

.ingrediente-vista-cantidad {
    flex-shrink: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

body.pagina-receta nav.tabs {
    position: static;
    box-shadow: none;
    flex: none;
    padding-bottom: 0;
}