/* =====================================
   ACCESIBILIDAD WEB - Enxógate
   Kit Digital · WCAG 2.1 Nivel AA · UNE-EN 301 549:2022
   ===================================== */

.sr-only {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Enlace "Saltar al contenido" */
.skip-link {
    position: absolute;
    top: -120px;
    left: 20px;
    background: var(--color-primary);
    color: #ffffff !important;
    padding: 12px 22px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 15px;
    border: 3px solid var(--color-wood);
    border-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-hover);
    text-decoration: none;
    z-index: 100000;
    transition: top 0.15s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 0;
}

#main-content:focus {
    outline: none;
}

/* Foco visible reforzado para navegación por teclado */
:focus-visible {
    outline: 3px solid var(--color-wood) !important;
    outline-offset: 3px !important;
    box-shadow: 0 0 0 6px rgba(82, 117, 168, 0.45) !important;
}

/* =========================
   BOTÓN FLOTANTE
   ========================= */
.a11y-floating-wrapper {
    position: fixed;
    bottom: 22px;
    left: 22px;
    z-index: 10000;
}

.a11y-trigger-btn {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #ffffff;
    border: 2.5px solid #ffffff;
    box-shadow: 0 8px 24px rgba(60, 91, 139, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.a11y-trigger-btn:hover {
    transform: scale(1.08);
    background: var(--color-primary-dark);
}

@media (max-width: 767px) {
    .a11y-floating-wrapper { bottom: 14px; left: 14px; }
    .a11y-trigger-btn { width: 48px; height: 48px; font-size: 24px; }
}

/* =========================
   PANEL
   ========================= */
.a11y-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(26, 28, 33, 0.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 10010;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.a11y-modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.a11y-modal-window {
    background: #ffffff;
    color: var(--color-dark);
    font-family: var(--font-body);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-modal);
    overflow: hidden;
    transform: translateY(20px) scale(0.96);
    transition: transform 0.25s ease;
}

.a11y-modal-backdrop.open .a11y-modal-window {
    transform: translateY(0) scale(1);
}

.a11y-modal-header {
    padding: 16px 22px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: var(--color-primary-light);
}

.a11y-header-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.a11y-header-icon {
    color: var(--color-primary);
    font-size: 30px;
    line-height: 1;
}

.a11y-title {
    font-family: var(--font-heading);
    font-size: 19px;
    font-weight: 700;
    color: var(--color-dark);
    margin: 0;
    line-height: 1.25;
}

.a11y-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--color-primary-dark);
    background: #ffffff;
    padding: 2px 9px;
    border-radius: var(--radius-pill);
    margin-top: 4px;
}

.a11y-close-btn {
    background: transparent;
    border: none;
    color: var(--color-muted);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.a11y-close-btn:hover {
    background: #ffffff;
    color: var(--color-dark);
}

.a11y-modal-body {
    padding: 22px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.a11y-section-title {
    font-family: var(--font-body);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    gap: 7px;
}

.a11y-btn-group,
.a11y-grid-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.a11y-btn,
.a11y-card-btn {
    background: var(--color-light-bg);
    border: 1px solid var(--color-border);
    color: var(--color-dark);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.15s ease;
}

.a11y-btn { padding: 9px 6px; font-size: 12.5px; gap: 3px; }
.a11y-card-btn { padding: 11px 6px; font-size: 12px; gap: 6px; }
.a11y-card-btn .fa { font-size: 20px; }
.a11y-btn-ico { font-size: 17px; font-weight: 700; }

.a11y-btn:hover,
.a11y-card-btn:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

.a11y-btn.active,
.a11y-card-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
    font-weight: 700;
}

.a11y-grid-toggles {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.a11y-toggle-btn {
    background: var(--color-light-bg);
    border: 1px solid var(--color-border);
    color: var(--color-dark);
    padding: 11px 15px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    transition: all 0.15s ease;
}

.a11y-toggle-btn > .fa {
    color: var(--color-primary);
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.a11y-toggle-state {
    margin-left: auto;
    width: 40px;
    height: 22px;
    background: #cbd5e1;
    border-radius: var(--radius-pill);
    position: relative;
    flex-shrink: 0;
    transition: background 0.15s ease;
}

.a11y-toggle-state::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease;
}

.a11y-toggle-btn.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

.a11y-toggle-btn.active .a11y-toggle-state { background: var(--color-primary); }
.a11y-toggle-btn.active .a11y-toggle-state::after { transform: translateX(18px); }

.a11y-modal-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    background: var(--color-light-bg);
}

.a11y-reset-btn {
    background: transparent;
    border: 1px solid #cbd5e1;
    color: var(--color-muted);
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.a11y-reset-btn:hover {
    background: #fee2e2;
    border-color: #dc2626;
    color: #b91c1c;
}

.a11y-statement-link {
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.a11y-statement-link:hover { text-decoration: underline; }

@media (max-width: 479px) {
    .a11y-btn-group,
    .a11y-grid-options { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================
   MODIFICADORES EN <html>
   ===================================== */

/* 1. Tamaño de texto: la hoja de estilos usa px, por eso se escala el contenido con zoom
      (equivalente al zoom del navegador, el diseño se reajusta sin pérdida de contenido) */
html.a11y-font-sm body > *:not(.a11y-floating-wrapper):not(.a11y-modal-backdrop):not(script) { zoom: 0.9; }
html.a11y-font-lg body > *:not(.a11y-floating-wrapper):not(.a11y-modal-backdrop):not(script) { zoom: 1.2; }
html.a11y-font-xl body > *:not(.a11y-floating-wrapper):not(.a11y-modal-backdrop):not(script) { zoom: 1.4; }

/* 2. Alto contraste (texto blanco/amarillo sobre negro, ratio > 7:1) */
html.a11y-high,
html.a11y-high body,
html.a11y-high main,
html.a11y-high nav,
html.a11y-high header,
html.a11y-high footer,
html.a11y-high section,
html.a11y-high article,
html.a11y-high aside,
html.a11y-high div,
html.a11y-high ul,
html.a11y-high form,
html.a11y-high input,
html.a11y-high select,
html.a11y-high textarea {
    background-color: #000000 !important;
    background-image: none !important;
    color: #ffffff !important;
    border-color: #ffd700 !important;
    box-shadow: none !important;
    text-shadow: none !important;
}

html.a11y-high h1,
html.a11y-high h2,
html.a11y-high h3,
html.a11y-high h4,
html.a11y-high strong {
    color: #ffd700 !important;
}

html.a11y-high p,
html.a11y-high span,
html.a11y-high li,
html.a11y-high small,
html.a11y-high label,
html.a11y-high td,
html.a11y-high th {
    color: #ffffff !important;
}

html.a11y-high a,
html.a11y-high button,
html.a11y-high .btn {
    color: #ffff00 !important;
    background-color: #000000 !important;
    border-color: #ffff00 !important;
}

html.a11y-high a { text-decoration: underline !important; }

html.a11y-high .nav-badge,
html.a11y-high .lang-tab.active {
    background: #000000 !important;
    color: #ffd700 !important;
    border: 1px solid #ffd700 !important;
}

/* El logo sobre fondo blanco para que siga siendo legible */
html.a11y-high .site-logo img,
html.a11y-high .logo-box img {
    background: #ffffff !important;
    padding: 4px;
    border-radius: 4px;
}

/* 3. Escala de grises */
html.a11y-grayscale { filter: grayscale(100%) !important; }

/* 4. Invertir colores (las imágenes conservan su color original) */
html.a11y-invert { filter: invert(100%) hue-rotate(180deg) !important; }
html.a11y-invert img,
html.a11y-invert video,
html.a11y-invert iframe { filter: invert(100%) hue-rotate(180deg) !important; }

/* 5. Tipografía para dislexia (se mantienen los iconos de Font Awesome) */
html.a11y-dyslexic,
html.a11y-dyslexic *:not(.fa) {
    font-family: Verdana, 'Segoe UI', Arial, sans-serif !important;
    letter-spacing: 0.05em !important;
    word-spacing: 0.16em !important;
    font-style: normal !important;
}

/* 6. Espaciado de texto (WCAG 1.4.12) */
html.a11y-spacing p,
html.a11y-spacing li,
html.a11y-spacing a,
html.a11y-spacing span,
html.a11y-spacing h1,
html.a11y-spacing h2,
html.a11y-spacing h3,
html.a11y-spacing h4,
html.a11y-spacing label {
    line-height: 1.9 !important;
    letter-spacing: 0.12em !important;
    word-spacing: 0.16em !important;
}

html.a11y-spacing p { margin-bottom: 2em !important; }

/* 7. Resaltar enlaces */
html.a11y-highlight-links a {
    text-decoration: underline 3px solid var(--color-wood) !important;
    text-underline-offset: 3px !important;
    background-color: #fff8e1 !important;
    color: #2a4470 !important;
    font-weight: 700 !important;
    padding: 0.05em 0.25em !important;
    border-radius: 3px !important;
}

/* 8. Cursor grande */
html.a11y-large-cursor,
html.a11y-large-cursor * {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24'%3E%3Cpath d='M4 2l15 11.2-6.3.9 3.8 7.4-2.7 1.4-3.8-7.5L4 20z' fill='%23000' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3C/svg%3E") 6 3, auto !important;
}

html.a11y-large-cursor a,
html.a11y-large-cursor a *,
html.a11y-large-cursor button,
html.a11y-large-cursor button * {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24'%3E%3Cpath d='M4 2l15 11.2-6.3.9 3.8 7.4-2.7 1.4-3.8-7.5L4 20z' fill='%235275a8' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3C/svg%3E") 6 3, pointer !important;
}

/* 9. Pausar animaciones (también respeta la preferencia del sistema) */
html.a11y-stop-animations *,
html.a11y-stop-animations *::before,
html.a11y-stop-animations *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}