* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Poppins', Arial, sans-serif;
    background: #eef1f8;
    color: #222;
    line-height: 1.55;
}

.barra-acciones {
    background: #fff;
    border-bottom: 1px solid #dde2ef;
    padding: 16px 20px 12px;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.barra-acciones-inner {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.instrucciones-print {
    max-width: 820px;
    margin: 10px auto 0;
    font-size: 0.88rem;
    color: #555;
}

.instrucciones-print p {
    margin: 0 0 6px;
}

.instrucciones-print p:last-child {
    margin-bottom: 0;
}

.btn-word {
    background: #2b579a;
    color: #fff;
}

.btn-volver,
.btn-accion {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-volver {
    background: #f3f5fb;
    color: #445;
}

.btn-imprimir {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}

.carta-documento {
    max-width: 820px;
    margin: 28px auto 48px;
    background: #fff;
    padding: 48px 56px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.carta-logo {
    height: 44px;
    margin-bottom: 20px;
}

.carta-encabezado h1 {
    font-size: 1.15rem;
    text-align: center;
    letter-spacing: 0.02em;
    margin: 0 0 28px;
    color: #1a1a2e;
}

.carta-fecha {
    margin-bottom: 22px;
}

.carta-destinatario {
    margin-bottom: 22px;
}

.carta-cuerpo-intro {
    margin-bottom: 18px;
    text-align: justify;
}

.carta-clausulas {
    margin: 0 0 24px;
    padding-left: 1.35rem;
}

.carta-clausulas li {
    margin-bottom: 12px;
    text-align: justify;
}

.carta-cierre,
.carta-atentamente {
    margin-bottom: 8px;
}

.carta-firma-bloque {
    margin: 28px 0 32px;
}

.linea-firma {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.carta-datos-finales {
    margin: 0;
}

.carta-datos-finales div {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 8px;
    margin-bottom: 8px;
}

.carta-datos-finales dt {
    font-weight: 600;
    margin: 0;
}

.carta-datos-finales dd {
    margin: 0;
}

.campo-editable {
    display: inline;
    min-width: 2ch;
    padding: 0 3px;
    border-radius: 3px;
    outline: none;
    cursor: text;
    background: rgba(102, 126, 234, 0.12);
    box-shadow: inset 0 -2px 0 rgba(102, 126, 234, 0.45);
}

.campo-editable:focus {
    background: #fff;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.35);
}

.campo-editable.campo-vacio {
    color: #667eea;
    font-style: italic;
}

.carta-datos-finales .campo-editable {
    display: inline-block;
    min-width: 140px;
}

@media (max-width: 640px) {
    .carta-documento {
        padding: 28px 22px;
        margin: 16px 12px 32px;
    }

    .carta-datos-finales div {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}

@media print {
    body {
        background: #fff;
    }

    .no-print {
        display: none !important;
    }

    .carta-documento {
        margin: 0;
        padding: 0;
        box-shadow: none;
        border-radius: 0;
        max-width: none;
    }

    .carta-encabezado h1 {
        font-size: 14pt;
    }

    .campo-editable {
        background: transparent !important;
        box-shadow: none !important;
        color: inherit !important;
        font-style: normal !important;
    }

    .carta-clausulas li {
        page-break-inside: avoid;
    }
}