/* =====================================================================
   Formulario público — vista para responder
   ===================================================================== */

body {
    min-height: 100vh; min-height: 100dvh;
    padding: 32px 16px 64px;
    background:
        radial-gradient(1200px 600px at 50% -10%, rgba(24, 24, 27, 0.03), transparent),
        var(--bg);
}

.container,
.form-public-container {
    max-width: 640px;
    margin: 0 auto;
    animation: fade-in 300ms ease-out;
}

/* Cards centradas tipo Google Forms (no hay un wrapper, así que aplicamos
   el ancho máximo y el centrado directamente a cada bloque del form) */
.header-card,
.form-header,
.question-card,
form > .corte-seccion,
form > #nav-wrapper,
body > form,
.form-banner-public {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.form-banner-public {
    margin-bottom: 14px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-muted);
    aspect-ratio: 32 / 7;
}

.form-banner-public img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* === Cabecera del formulario === */
.form-header {
    position: relative;
    padding: 32px 32px 28px;
    margin-bottom: 14px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-top: 6px solid var(--accent);
    border-radius: var(--radius-lg);
}

.form-header h1,
.form-header .form-title {
    margin: 0 0 8px;
    font-size: 26px;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text);
}

.form-header p,
.form-header .form-description {
    margin: 0;
    font-size: 14px;
    line-height: 1.55;
    color: var(--text-muted);
}

.required-note {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-subtle);
    font-size: 12px;
    color: var(--danger);
}

/* === Pregunta === */
.question-card {
    position: relative;
    margin-bottom: 12px;
    padding: 22px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.question-card:hover {
    border-color: var(--border-strong);
}

.question-card:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(78, 95, 40, 0.12);
}

.question-text {
    display: block;
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    letter-spacing: -0.005em;
    line-height: 1.4;
}

.required-star {
    color: var(--danger);
    margin-left: 3px;
}

.question-subtitle {
    margin: -6px 0 10px;
    font-size: 13px;
    line-height: 1.45;
    color: var(--text-muted);
}

.answer-container {
    margin-top: 4px;
}

/* === Inputs internos === */
.input-text,
.input-textarea,
.input-date,
.input-file,
.input-select {
    width: 100%;
    padding: 10px 12px;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.input-text:focus,
.input-textarea:focus,
.input-date:focus,
.input-select:focus {
    outline: none;
    background: var(--bg-elevated);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(78, 95, 40, 0.12);
}

.input-textarea {
    min-height: 96px;
    line-height: 1.5;
    resize: vertical;
}

/* === Radio / Checkbox === */
.option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    margin-bottom: 4px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}

.option:hover {
    background: var(--bg-muted);
}

.option input[type="radio"],
.option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.option label {
    margin: 0;
    font-size: 14px;
    font-weight: 400;
    color: var(--text);
    cursor: pointer;
}

/* === Estrellas (rating) === */
/* Truco: dirección RTL + orden invertido en HTML para que el selector
   `:checked ~ label` pueda colorear las estrellas anteriores. Usamos
   inline-flex para que el bloque ocupe sólo el ancho de las estrellas
   y quede alineado a la izquierda del contenedor. */
.star-rating {
    display: inline-flex;
    gap: 4px;
    direction: rtl;
}

.star-rating input[type="radio"] {
    display: none;
}

.star-rating label {
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 32px;
    line-height: 1;
    color: var(--border-strong);
    transition: color var(--transition);
    user-select: none;
}

.star-rating label::before {
    content: '\2605';
}

.star-rating input[type="radio"]:checked ~ label,
.star-rating label:hover,
.star-rating label:hover ~ label {
    color: #f59e0b;
}

/* === Archivo: botón unificado con menú desplegable === */
.file-upload-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 420px;
}

.file-trigger-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    height: 40px;
    padding: 0 14px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition),
                color var(--transition), transform var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.file-trigger-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-strong);
}

.file-trigger-btn:active { transform: scale(0.99); }

.file-trigger-btn .material-icons {
    font-size: 18px !important;
    line-height: 1 !important;
    color: var(--text-muted);
}

.file-trigger-btn .file-trigger-label {
    flex: 1;
    text-align: left;
}

.file-trigger-btn .file-trigger-arrow {
    transition: transform var(--transition);
}

.file-trigger-btn[aria-expanded="true"] .file-trigger-arrow {
    transform: rotate(180deg);
}

.file-trigger-btn[aria-expanded="true"] {
    border-color: var(--border-strong);
    background: var(--bg-hover);
}

.file-upload-menu {
    position: absolute;
    top: 44px;
    left: 0;
    right: 0;
    z-index: 20;
    display: flex;
    flex-direction: column;
    padding: 6px;
    gap: 2px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
    animation: fade-in 150ms ease-out;
}

.file-upload-menu[hidden] { display: none; }

.file-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    height: 40px;
    padding: 0 12px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    background: transparent;
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    transition: background var(--transition), color var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.file-btn:hover {
    background: var(--bg-hover);
}

.file-btn:active {
    transform: scale(0.99);
}

.file-btn .material-icons {
    font-size: 18px !important;
    line-height: 1 !important;
    color: var(--text-muted);
}

.file-btn:hover .material-icons {
    color: var(--text);
}

/* === Preview de archivo elegido === */
.file-upload-preview:empty {
    display: none;
}

.file-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--bg-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    animation: fade-in 200ms ease-out;
}

.file-preview img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    flex-shrink: 0;
}

.file-preview .file-icon {
    width: 56px;
    height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px !important;
    color: var(--text-subtle);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.file-preview .file-info {
    flex: 1;
    min-width: 0;
}

.file-preview .file-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-preview .file-size {
    margin-top: 2px;
    font-size: 12px;
    color: var(--text-subtle);
    font-variant-numeric: tabular-nums;
}

.file-preview .file-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-subtle);
    background: transparent;
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}

.file-preview .file-remove:hover {
    color: var(--danger);
    background: var(--danger-soft);
}

.file-preview .file-remove .material-icons {
    font-size: 18px !important;
    line-height: 1 !important;
}

/* === Compatibilidad legacy con .input-file === */
.input-file[hidden] { display: none !important; }

/* === Mobile === */
@media (max-width: 480px) {
    .file-preview img,
    .file-preview .file-icon {
        width: 48px;
        height: 48px;
    }
}

/* === Firma === */
.signature-wrapper {
    position: relative;
    padding: 14px;
    background: var(--bg-muted);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
}

.signature-wrapper:focus-within {
    border-style: solid;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(78, 95, 40, 0.12);
}

.signature-pad {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 200px;
    background:
        linear-gradient(transparent calc(100% - 44px), var(--border) calc(100% - 44px), var(--border) calc(100% - 43px), transparent calc(100% - 43px)),
        #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: crosshair;
    touch-action: none;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
}

/* Leyenda "Firmá aquí" sobre el canvas: se oculta cuando se firma */
.signature-wrapper::before {
    content: 'Firmá aquí';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-subtle);
    pointer-events: none;
    transition: opacity var(--transition);
}

.signature-wrapper.has-signature::before {
    opacity: 0;
}

.btn-clear {
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 34px;
    padding: 0 14px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-clear:hover {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: var(--danger-soft);
}

/* === Botón submit === */
.submit-container {
    margin-top: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.submit-container .submit-btn {
    min-width: 200px;
}

@media (max-width: 640px) {
    .submit-container .submit-btn {
        width: 100%;
        max-width: 320px;
    }
}

.submit-btn,
button[type="submit"] {
    height: 42px;
    padding: 0 24px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--accent-text);
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition),
                color var(--transition), transform var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.submit-btn:hover,
button[type="submit"]:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.submit-btn:active,
button[type="submit"]:active { transform: scale(0.99); }

/* Botón "Atrás" en la navegación entre secciones — secundario, mismo tamaño
   que Enviar/Siguiente para que la fila quede balanceada. */
.btn-return {
    height: 42px;
    padding: 0 24px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition),
                color var(--transition), transform var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.btn-return:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.btn-return:active { transform: scale(0.99); }

/* === Separador de sección en formulario público === */
.corte-seccion {
    margin: 40px auto 24px;
    padding: 0;
}

.titulo-nueva-pagina {
    margin: 0;
    padding: 24px 28px;
    font-size: 22px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-lg);
    letter-spacing: -0.01em;
}

@media (max-width: 640px) {
    .corte-seccion { margin: 28px auto 18px; }
    .titulo-nueva-pagina {
        padding: 20px 22px;
        font-size: 19px;
    }
}

/* === Formulario inactivo / pausado === */
.formulario-inactivo {
    max-width: 480px;
    margin: 80px auto;
    padding: 40px 32px;
    text-align: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.formulario-inactivo .material-icons {
    font-size: 40px;
    color: var(--warning);
    margin-bottom: 12px;
}

.formulario-inactivo h2 {
    margin: 0 0 8px;
    font-size: 20px;
}

.formulario-inactivo p {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
}

/* === Responsive === */
@media (max-width: 640px) {
    body { padding: 16px 12px 48px; }
    .form-header { padding: 24px 20px; }
    .form-header h1 { font-size: 22px; }
    .question-card { padding: 18px; }
}

/* =====================================================================
   Responsive fino (mobile + safe-area)
   ===================================================================== */
@media (max-width: 640px) {
    body { padding: 20px 14px calc(56px + env(safe-area-inset-bottom, 0px)); }
    .header-card,
    .form-header,
    .question-card,
    form > .corte-seccion,
    form > #nav-wrapper,
    body > form,
    .form-banner-public {
        max-width: 100%;
    }
    .form-header { padding: 24px 20px 22px; }
    .form-header h1 { font-size: 22px; }
    .question-card { padding: 18px; }
    .question-text { font-size: 14.5px; }
    .input-text,
    .input-textarea,
    .input-date,
    .input-select { font-size: 16px; } /* iOS no-zoom */

    /* Signature: alto fluido, no tan alto en mobile */
    .signature-pad { height: 160px; }

    /* Botones de navegación de sección apilados full-width y centrados */
    .nav-btns {
        width: 100%;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    .nav-btns > * {
        width: 100%;
        max-width: 320px;
        margin-inline: auto;
    }

    /* Submit/Enviar y Atrás: full-width centrados */
    .submit-btn,
    button[type="submit"],
    .btn-return {
        width: 100%;
        max-width: 320px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

@media (max-width: 380px) {
    body { padding: 16px 10px calc(40px + env(safe-area-inset-bottom, 0px)); }
    .form-header { padding: 20px 16px 18px; }
    .form-header h1 { font-size: 20px; }
    .question-card { padding: 14px; }
    .signature-pad { height: 140px; }
    .form-banner-public { aspect-ratio: 16 / 6; }
}