:root {
    --azul-marino: #14213d;
    --granate: #7a1f2b;
    --granate-oscuro: #5e1620;
    --gris-borde: #d1d5db;
    --gris-texto: #4b5563;
    --verde-ok: #16a34a;
    --rojo-error: #dc2626;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: #f4f5f7;
    color: #1f2937;
}

.cabecera-form {
    background: linear-gradient(135deg, var(--azul-marino), #0b1526);
    color: #fff;
    padding: 26px 20px;
    text-align: center;
}
.cabecera-form h1 { margin: 0 0 6px; font-size: 22px; }
.cabecera-form p { margin: 0; font-size: 14px; opacity: .85; }

.contenedor {
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 16px 60px;
}

.bloque {
    background: #fff;
    border-radius: 12px;
    padding: 22px 20px;
    margin-bottom: 18px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.bloque h2 {
    margin: 0 0 6px;
    font-size: 19px;
    color: var(--azul-marino);
}
.bloque > p.ayuda-bloque {
    margin: 0 0 16px;
    font-size: 13.5px;
    color: var(--gris-texto);
    line-height: 1.45;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    margin: 14px 0 5px;
}
label .opcional { font-weight: 400; color: #9ca3af; }

input[type=text], input[type=email], input[type=tel], input[type=date],
input[type=number], select, textarea {
    width: 100%;
    padding: 11px 13px;
    border: 1px solid var(--gris-borde);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    background: #fff;
    color: #111827;
}
textarea { resize: vertical; min-height: 70px; }
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--azul-marino);
    box-shadow: 0 0 0 3px rgba(20,33,61,.12);
}

.campo-archivo {
    border: 1px dashed var(--gris-borde);
    border-radius: 8px;
    padding: 14px;
    background: #fafafa;
}
.campo-archivo input[type=file] { width: 100%; font-size: 13.5px; }
.campo-archivo .nombre-archivo { font-size: 12.5px; color: var(--gris-texto); margin-top: 6px; }

.fila-dos { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
@media (max-width: 520px) { .fila-dos { grid-template-columns: 1fr; } }

.check-si-no {
    display: flex;
    gap: 22px;
    margin-top: 8px;
}
.check-si-no label {
    display: flex;
    align-items: center;
    gap: 7px;
    margin: 0;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
}
.check-si-no input { width: 17px; height: 17px; margin: 0; }

.checkbox-simple {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin-top: 12px;
}
.checkbox-simple input { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; }
.checkbox-simple label {
    margin: 0;
    font-weight: 500;
    font-size: 14px;
    line-height: 1.4;
    cursor: pointer;
}

.error-campo {
    color: var(--rojo-error);
    font-size: 12.5px;
    margin-top: 4px;
    display: none;
}

.oculto { display: none !important; }

.btn-enviar {
    display: block;
    width: 100%;
    background: var(--granate);
    color: #fff;
    border: none;
    border-radius: 9px;
    padding: 15px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-top: 8px;
}
.btn-enviar:hover { background: var(--granate-oscuro); }
.btn-enviar:disabled { opacity: .6; cursor: not-allowed; }

.aviso-error-general {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 14px;
    margin-bottom: 18px;
}

.pantalla-gracias {
    max-width: 480px;
    margin: 60px auto;
    background: #fff;
    border-radius: 14px;
    padding: 40px 28px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,.08);
}
.pantalla-gracias .icono-ok {
    width: 62px; height: 62px; border-radius: 50%;
    background: #dcfce7; color: var(--verde-ok);
    display: flex; align-items: center; justify-content: center;
    font-size: 32px; margin: 0 auto 18px;
}
.pantalla-gracias h1 { color: var(--azul-marino); margin-bottom: 10px; font-size: 21px; }
.pantalla-gracias p { color: var(--gris-texto); font-size: 14.5px; line-height: 1.5; }